WO2020172924A1 - 控制方法、控制装置 - Google Patents

控制方法、控制装置 Download PDF

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Publication number
WO2020172924A1
WO2020172924A1 PCT/CN2019/078717 CN2019078717W WO2020172924A1 WO 2020172924 A1 WO2020172924 A1 WO 2020172924A1 CN 2019078717 W CN2019078717 W CN 2019078717W WO 2020172924 A1 WO2020172924 A1 WO 2020172924A1
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WO
WIPO (PCT)
Prior art keywords
control
signal
output terminal
closing
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/078717
Other languages
English (en)
French (fr)
Inventor
赵海军
陈加敏
双兵
田西蒙
莫利顿⋅维维恩
程颖
刘瀚翼
沈佳丽
傅杨剑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Priority to AU2019431527A priority Critical patent/AU2019431527B2/en
Priority to EP19917321.2A priority patent/EP3933876A4/en
Publication of WO2020172924A1 publication Critical patent/WO2020172924A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Program control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423—Input/output
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Program control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/32—Energising current supplied by semiconductor device
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25257—Microcontroller

Definitions

  • the present disclosure relates to the field of control, and more specifically to a control method and control device.
  • relays especially bistable relays, as an electronic control device, are widely used in automatic control devices to realize the functions of automatic adjustment, safety protection, and conversion circuit.
  • the control device controls The working state of the relay to realize the control of the external load circuit.
  • the micro-control unit will send a control signal to the control circuit to control the coil of the relay and drive the contact state to reverse.
  • the control circuit may receive two mutually exclusive signals of the open control signal and the closed control signal at the same time, so that the unilateral arm of the control circuit is short-circuited; secondly, when the micro-control unit sends The control signal is a long-term high-level signal, which will cause the relay coil to burn out; finally, when only one control signal is sent to control the relay, especially when the relay contacts are stuck, the failure rate of the relay without corresponding actions is higher. The control reliability is low.
  • the present disclosure proposes a control method and control device in response to the above-mentioned problems and needs. It can overcome the technical problems mentioned in the background art by adopting the features described below, and has other advantages described below.
  • a control device which is connected to an external load and includes: a power supply module; a micro-control unit, which receives input commands, and its power control output is connected to the control input of the power supply module Control circuit, its signal input terminal is connected to the signal output terminal of the micro-control unit; relay, which has contacts, its power input terminal is connected to the power output terminal of the power module, and its control input terminal is connected to the signal of the control circuit The output terminal, the signal output terminal of which is connected to the input terminal of the external load.
  • the control signal of the control input terminal controls the contact to be in the closed state or the open state.
  • the signal output terminal of the relay When the contact is in the closed state, the signal output terminal of the relay is directed to the external load Output state control signal; wherein a level conversion circuit is also provided between the micro control unit and the control circuit, the signal input end of the level conversion circuit is connected to the signal output end of the micro control unit, and the level conversion circuit
  • the pulse output terminal is connected to the signal input terminal of the control circuit, and is used to convert the control signal from the micro-control unit into a pulse signal, and the duration of the effective level of the pulse signal is less than the pulse time threshold.
  • the micro-control unit when the input command is a turn-on command, continuously sends a plurality of turn-on control signals to the level conversion circuit at predetermined time intervals, and the level conversion circuit receives successively multiple Turn on the control signal and continuously send multiple turn-on pulse signals to the control circuit at predetermined time intervals.
  • the control circuit receives and continues multiple turn-on pulse signals and continuously sends multiple turn-on signals to the relay.
  • the relay responds to the continuous multiple turn-on signals to turn on the relay. Contacts.
  • the micro control unit when the input command is a closing command, continuously sends a plurality of closing control signals to the level conversion circuit at predetermined time intervals, and the level conversion circuit receives a plurality of consecutive closing control signals. Close the control signal and continuously send multiple closing pulse signals to the control circuit at predetermined time intervals.
  • the control circuit receives and continues multiple closing pulse signals and continuously sends multiple closing signals to the relay.
  • the relay responds to the continuous multiple closing signals to close the relay. Contacts.
  • the output terminal of the micro-control unit includes an opening signal output terminal and a closing signal output terminal
  • the signal input terminal of the level conversion circuit includes an opening signal input terminal and a closing signal
  • An interlock circuit is also provided between the micro control unit and the level conversion circuit at the input end, wherein the opening signal input end and the closing signal input end of the interlocking circuit are respectively connected to the opening signal output end and the closing signal output end of the micro control unit
  • the signal output terminal, the opening signal output terminal and the closing signal output terminal of the interlock circuit are respectively connected to the opening signal input terminal and the closing signal input terminal of the level conversion circuit, and the opening signal output terminal and the closing signal output terminal of the interlock circuit are respectively connected At least one of them is in a locked state and does not output a control signal.
  • the opening signal output terminal works, and the interlock circuit locks the closing signal output terminal to make the closing signal
  • the output terminal does not output a control signal
  • the closing signal input terminal receives the closing control signal
  • the closing signal output terminal works during the closing control signal period
  • the interlock circuit locks the opening signal output terminal so that the opening signal output terminal does not output a control signal
  • the interlock circuit locks the opening signal output terminal and the closing signal output terminal to make the opening signal output terminal and the closing signal output terminal No control signal is output.
  • control device further includes a detection circuit, wherein the detection output terminal of the detection circuit is connected to the feedback input terminal of the micro control unit, and the detection input terminal of the detection circuit It is connected to the detection terminal of the external load, and the detection circuit is used to feed back the state of the external load to the micro control unit.
  • the micro-control unit determines whether the state of the received external load is consistent with the expected state of the current control signal of the micro-control unit, and is determining whether the state of the external load is consistent with that of the micro-control unit. When the expected state of the current control signal is inconsistent, the micro control unit sends error information to the main control unit.
  • the micro-control unit determines whether the state of the received external load is consistent with the expected state of the current control signal of the micro-control unit, and is determining whether the state of the external load is consistent with that of the micro-control unit.
  • the micro control unit compares the current control signal transmission times with the preset transmission threshold. If the current control signal transmission frequency is less than the preset transmission threshold, the micro control unit outputs an increased output voltage to the power module The power module responds to the signal to increase the voltage output to the relay; and the micro-control unit sends the current control signal to the control circuit again.
  • the micro control unit if the current number of times of sending the control signal is greater than or equal to the preset sending threshold, the micro control unit sends error information to the main control unit.
  • a control method includes: receiving an input command, and generating a corresponding control signal based on the input command; generating a corresponding pulse signal based on the control signal, the pulse The duration of the effective level of the signal is less than the pulse time threshold; based on the pulse signal, the contact of the control relay is in the closed state or the open state, and when the contact is in the closed state, the relay outputs a state control signal to the external load.
  • a plurality of opening control signals are generated and the plurality of opening control signals are continuously sent at predetermined time intervals to open the contacts of the relay.
  • a plurality of closing control signals are generated and the plurality of closing control signals are continuously sent at predetermined time intervals to close the contacts of the relay.
  • the method further includes: acquiring the state of the external load; judging whether the state of the external load is consistent with the expected state of the current input command.
  • the power supply voltage of the relay is increased and Send the control signal again.
  • error information is generated and output.
  • FIG. 1 shows a schematic diagram of a control method 700 according to an exemplary embodiment of the present disclosure
  • FIG. 1B shows a schematic diagram of a variation 710 of the control method according to an exemplary embodiment of the present disclosure
  • FIG. 2 shows a schematic diagram of a control device 100 according to an exemplary embodiment of the present disclosure, which includes a level conversion circuit 150;
  • FIG. 2B shows a schematic diagram of the control circuit 130 according to an exemplary embodiment of the present disclosure
  • FIG. 3 shows a working timing diagram of the level conversion circuit 150 according to an exemplary embodiment of the present disclosure
  • FIG. 4 shows a schematic diagram of a variant of the control device 100 according to an exemplary embodiment of the present disclosure, which includes an interlock circuit 160 and a level conversion circuit 150;
  • FIG. 5 shows a working sequence diagram of the interlock circuit 160 according to an exemplary embodiment of the present disclosure
  • FIG. 6 shows a schematic diagram of another variant of the control device 100 according to an exemplary embodiment of the present disclosure, which is connected with a detection circuit 170.
  • any number of different modules may be used and run on the user terminal and/or server.
  • the modules are merely illustrative, and different modules may be used for different aspects of the system and method.
  • a flowchart is used in this application to illustrate the operations performed by the system according to the embodiments of the application. It should be understood that the preceding or following operations are not necessarily performed exactly in order. On the contrary, the various steps can be processed in reverse order or simultaneously as required. At the same time, you can also add other operations to these processes, or remove a step or several operations from these processes.
  • Fig. 1 shows a schematic diagram of a control method 700 according to an exemplary embodiment of the present disclosure.
  • step S701 an input command is received, and a corresponding control signal is generated based on the input command.
  • the input command may be a command directly input by the user, or may also be a command generated by further processing the user's control instruction.
  • the embodiments of the present disclosure are not limited by the source of the input command.
  • the generated control signal may be, for example, a voltage control signal, or may also be a current control signal, which may be a continuous signal or a pulse signal, and may adopt a high level or a low level as its effective level.
  • the embodiments of the present disclosure are not limited by the type of control signal.
  • step S702 based on the control signal, a corresponding pulse signal is generated, and the duration of the effective level of the pulse signal is less than the pulse time threshold.
  • the pulse time threshold of the pulse signal (open pulse signal, close pulse signal) aims to avoid the situation that the relay coil is burnt due to the long duration of the signal (for example, the duration is 10s).
  • the pulse time threshold can be adjusted. For example, for the opening pulse signal and the closing pulse signal, the pulse time threshold can be set to 20ms, or for the opening pulse signal signal, the pulse time threshold is set to 10ms, for the closing pulse signal, Set its pulse time threshold to 25ms.
  • the present disclosure is not limited by the specific value of the set pulse time threshold.
  • step S703 based on the pulse signal, the contact of the control relay 140 is in a closed state or an open state. And when the contact is in the closed state, the relay 140 outputs a state control signal to the external load 200.
  • the external load 200 may be a separate load element, such as a contactor (iCT) or a pulse switch (iTL), and it may also be a load circuit formed by a plurality of load elements in parallel or in series.
  • iCT contactor
  • iTL pulse switch
  • the embodiment of the present disclosure It is not restricted by the composition and structure of the external load.
  • a plurality of turn-on control signals are generated and the plurality of turn-on control signals are continuously sent at predetermined time intervals to turn on the contacts of the relay 140.
  • sending multiple open control signals at predetermined time intervals can effectively realize the state control of the relay, especially when the relay contacts are stuck. Ensure the reliable operation of the relay and reduce the failure rate of the relay.
  • a plurality of closing control signals are generated and the plurality of closing control signals are continuously sent at predetermined time intervals to close the contacts of the relay 140.
  • FIG. 1B shows a schematic diagram of a variation 710 of the control method according to an exemplary embodiment of the present disclosure.
  • step S711 the state of the external load 200 is acquired.
  • the state of the external load may be a state signal detected from the detection terminal of the external load, or it may be a contact state signal, a voltage signal, or a current signal of the external load acquired based on the detection circuit.
  • the embodiment of the present disclosure does not Limited by the type of external load status obtained.
  • step S712 it is determined whether the state of the external load 200 is consistent with the expected state of the current input command.
  • this detection process may be ended, or the state information of the external load may also be updated or reported.
  • the embodiments of the present disclosure are not limited by the specific processing method when the state of the external load is consistent with the expected state of the current input command.
  • step S713 when the state of the external load 200 is inconsistent with the expected state of the current input command, in step S713, it can be further determined whether the current control signal transmission times are less than the preset transmission threshold. If the number of times of sending the current control signal is less than the preset sending threshold, in step S714, the power supply voltage of the relay 140 is increased and the current control signal is sent again. Thereafter, as shown in FIG. 1B, it is possible to return to step S711 and perform the above-mentioned detection process 710 again. This process can be performed multiple times until the state of the external load is consistent with the expected state of the current control signal or the current control signal transmission times are greater than or equal to Send threshold. If the current transmission times of the control signal are greater than or equal to the preset transmission threshold, in step S715, an error message is generated and output, and this detection process is ended.
  • the preset sending threshold may be 3 or 5, or may also be other numerical values, and the embodiment of the present disclosure is not limited by the specific numerical value of the preset sending threshold.
  • the preset emission threshold is 4, and when the control signal is sent once, two control signals will be sent continuously. If after a transmission is performed, when the state of the received external load is inconsistent with the expected state of the current control signal, since the number of times the current control signal is sent is 1, which is less than the preset transmission threshold of 4, the voltage output from the power module to the relay is increased. And execute the current control signal transmission process again, that is, send two control signals continuously.
  • Fig. 2 shows a schematic diagram of a control device 100 according to an exemplary embodiment of the present disclosure.
  • control device 100 is connected with an external load 200, and the control device 100 includes a micro control unit 110, a power module 120, a control circuit 130, and a relay 140.
  • the power supply module 120 may be, for example, a DC power supply or an AC power supply, and the embodiments of the present disclosure are not limited by the type of power supply.
  • the micro-control unit 110 is used to receive input commands.
  • the input commands are, for example, local input commands, such as operating instructions entered by the user or commands inputted by the user through operating keys or knobs, or central input commands, such as from a master
  • the input command of the unit is not limited by the type of input command.
  • the micro control unit 110 may receive input commands in a wired manner, for example, or it may also receive input commands in a wireless manner, for example, through Zigbee communication, Ethernet, mobile communication technology, or through general packet radio service technology (GPRS). input the command.
  • GPRS general packet radio service technology
  • the embodiments of the present disclosure are not limited by the way the micro control unit receives input commands.
  • the power control output terminal c 1 of the micro-control unit 110 is connected to the control input terminal o 2 of the power module 120 for controlling the output voltage of the power module to the relay.
  • the control circuit may be, for example, a bridge circuit, such as an H-bridge circuit, or it may also be a control circuit of other form or structure.
  • the embodiments of the present disclosure are not limited by the composition and structure of the control circuit.
  • the signal input terminal s 2 of the control circuit 130 is connected to the signal output terminal c 2 of the micro control unit 110 so that the control circuit can receive the control signal from the micro control unit via the signal input terminal s 2 .
  • the relay 140 has contacts, and its power input terminal p 0 is connected to the power output terminal o 1 of the power module 120, and the relay is powered by the power module; and its control input terminal p 1 is connected to the signal output terminal s of the control circuit 130 3.
  • the control signal control contact received by the control input terminal p 1 is in a closed state or an open state; the relay 140 also has a signal output terminal p 2 , and its signal output terminal p 2 is connected to the input terminal m 1 of the external load 200 When the contact is in the closed state, the signal output terminal p 2 of the relay 140 outputs a state control signal to the external load 200.
  • the state control signal of the signal output terminal p 2 controls the external load to be in the working state, which is powered on and performs corresponding functions; when the relay contacts are in the open state, the signal The output terminal p 2 does not output a state control signal, and the external load is in a dormant state, it will not be powered on and will no longer perform corresponding functions.
  • the state control signal of the signal output terminal p 2 controls the external load to be in the first working state, which runs with higher power consumption and performs various tasks;
  • the signal output terminal p 2 does not output a state control signal, and the external load is in the second working state, which runs with lower power consumption and only performs specific tasks.
  • the embodiments of the present disclosure are not limited by the specific working state of the external load and its working content.
  • FIG. 2B shows a schematic diagram of the control circuit 130 according to an exemplary embodiment of the present disclosure.
  • control circuit when it is an H-bridge circuit, it may have 4 bridge arms, which are B 1 , B 2 , B 3 , and B 4 , and its signal input terminal s 2 includes an open signal input terminal s 21 and a close signal Input terminal s 22 .
  • the arm B 2 and B 4 When it is turned on upon receiving a control signal from the micro control unit 21 on signal input terminal S, i.e., its opening 21 receives the high level signal input terminal s, the arm B 2 and B 4 is turned on, then the output signal of the control circuit s 3 on signal output terminal, a current signal as shown by a solid arrow shown in FIG 2B, i.e., the relay is turned on in response to receiving the control signal which the relay contacts are opened; closed when it receives a signal input terminal s 22
  • the closing control signal from the micro control unit that is, when its closing signal input terminal s 22 receives a high level
  • the bridge arms B 1 and B 3 are turned on, and the signal output terminal s 3 of the control circuit outputs a closing signal, as shown in the figure
  • the current signal shown by the dashed arrow in 2B the relay controls its relay contact to be in a closed state in response to the received closing signal.
  • a level conversion circuit 150 is further provided between the micro control unit 110 and the control circuit 130, and the signal input terminal v 1 of the level conversion circuit 150 is connected to the signal output terminal c 2 of the micro control unit 110, The pulse output terminal v 2 of the level conversion circuit 150 is connected to the signal input terminal s 2 of the control circuit 130.
  • the level conversion circuit is used to convert the continuous control signal from the micro control unit into a corresponding pulse signal, and the duration of the effective level of the pulse signal is less than the pulse time threshold.
  • the level conversion circuit may include, for example, a monostable flip-flop to convert the control signal into a corresponding pulse signal, or a combination of multiple electronic devices to achieve the function of level conversion.
  • the present disclosure is not affected by the level conversion circuit.
  • FIG. 3 shows a timing diagram of the level conversion circuit 150 according to an exemplary embodiment of the present disclosure.
  • the above-mentioned level conversion circuit can be described in more detail.
  • the signal output terminal c 2 of the micro control unit 110 includes an opening signal output terminal c 21 and a closing signal output terminal c 22 , wherein the opening signal output terminal c 21 outputs The opening control signal is turned on, and the closing signal output terminal c 22 outputs the closing control signal.
  • the signal input terminal v 1 of the level conversion circuit 150 includes an opening signal input terminal v 11 and a closing signal input terminal v 12 , which are used to receive the opening control signal and the closing control signal, respectively.
  • the pulse output terminal v 2 of the level conversion circuit 150 includes The opening pulse output terminal v 21 and the closing pulse output terminal v 22 are respectively used to output opening and closing pulse signals to realize the control of the control circuit, and the above-mentioned signals adopt high level as their effective level.
  • the turn signal input terminal of the level converting circuit 150 v 11 receives a plurality of successive micro control unit 110 from the opening control signal CH1, CH2, CH3 when, wherein the opening control signal CH1 for example, for 100ms, the level conversion circuit 150 generating pulse signals corresponding to a plurality of open VH1, VH2, VH3 and pulse output by opening a plurality of open v 21 continuously outputs pulse signals to the control circuit 130, where the generated pulse signals VH1 opened for example for 10ms. And for each turn-on control signal, for example, take the turn-on control signal CH1 as an example. After the corresponding turn-on pulse signal VH1 is generated, the level conversion circuit 150 will no longer output the turn-on pulse during the duration of the turn-on control signal CH1. Signal until the subsequent turn-on control signals CH2 and CH3 arrive, and the level conversion circuit 150 generates corresponding pulse signals VH2 and VH3.
  • the closing signal input terminal of the level converting circuit 150 v 12 continuously receives a plurality of micro control unit 110 from the close control signal CL1, CL2, CL3, the closing control signal CL1 wherein e.g. 60ms duration
  • the level conversion circuit 150 to generate a corresponding plurality of closure pulse signals VL1, VL2, VL3 and by closing the pulse output v 22 will continuously output a plurality of pulse signals close to the control circuit 130, where the generated pulse signals VL1 closed for example for 10ms.
  • the level conversion circuit 150 will no longer output the closing pulse within the duration of the closing control signal CL1 Signal until the subsequent closing control signals CL2 and CL3 arrive, the level conversion circuit 150 generates corresponding closing pulse signals VL2 and VL3.
  • the control signal from the micro-control unit is converted into a pulse signal, and the duration of the effective level of the pulse signal is further set to be less than the pulse time threshold, which effectively prevents the micro-control unit from sending high signals for a long time.
  • the situation that the relay coil is burnt due to the level signal is conducive to the protection of the relay.
  • the micro control unit 110 when the input command is a turn-on command, continuously sends a plurality of turn-on control signals to the level conversion circuit 150 at predetermined time intervals, and the level conversion circuit 150 receives a plurality of consecutive turn-on control signals and The control circuit 120 continuously sends multiple turn-on pulse signals at predetermined time intervals.
  • the control circuit 120 receives multiple turn-on pulse signals and continuously sends multiple turn-on signals to the relay 140.
  • the relay 140 turns on the relay 140 in response to the multiple turn-on signals. Of contacts.
  • the predetermined time interval may be, for example, 10 ms or 15 ms.
  • the continuous sending of multiple turn-on control signals may be, for example, three continuous turn-on control signals, or five continuous turn-on control signals.
  • the present disclosure is not subject to the predetermined time. Limits on the duration of the interval and the specific number of continuously transmitted turn-on control signals.
  • sending multiple open control signals at predetermined time intervals can effectively realize the state control of the relay, especially when the relay contacts are stuck. Ensure the reliable operation of the relay and reduce the failure rate of the relay.
  • the micro-control unit 110 continuously sends a plurality of closing control signals to the level conversion circuit 150 at predetermined time intervals, and the level conversion circuit 150 receives a plurality of continuous closing control signals and A plurality of closing pulse signals are continuously sent to the control circuit 120 at predetermined time intervals.
  • the control circuit 120 receives a plurality of closing pulse signals and sends a plurality of closing signals to the relay 140.
  • the relay 140 closes the relay 140 in response to the plurality of closing signals. Of contacts.
  • the predetermined time interval may be, for example, 10 ms or 15 ms, and the continuous sending of multiple closing control signals may be, for example, sending three closing control signals continuously, or sending five closing control signals continuously.
  • the present disclosure is not subject to the predetermined time. The duration of the interval and the specific number of continuous closed control signals are limited.
  • FIG. 4 shows a schematic diagram of a variant of the control device 100 according to an exemplary embodiment of the present disclosure, which includes an interlock circuit 160.
  • the signal output terminal c 2 of the micro-control unit 110 includes an open signal output terminal c 21 and a closed signal output terminal c 22 , and the signal input terminal v 1 of the level conversion circuit 150 It includes an opening signal input terminal v 11 and a closing signal input terminal v 12 , and an interlock circuit 160 is also provided between the micro control unit 110 and the level conversion circuit 150.
  • the opening signal input terminal k 11 of the interlock circuit 160 is connected to the opening signal output terminal c 21 of the micro control unit 110, and the closing signal input terminal k 12 of the interlock circuit 160 is connected to the closing signal output terminal c of the micro control unit 110. 22 , the opening signal output terminal k 21 of the interlock circuit 160 is connected to the opening signal input terminal v 11 of the level conversion circuit 150, and the closing signal output terminal k 22 of the interlock circuit 160 is connected to the closing signal input of the level conversion circuit 150 Terminal v 12 , and at least one of the opening signal output terminal k 21 and the closing signal output terminal k 22 of the interlock circuit is in a locked state, and no control signal is output.
  • the interlock circuit is arranged between the micro-control unit and the level conversion circuit.
  • the interlock circuit is further arranged and the opening signal output terminal and the closing signal are set. At least one of the output terminals is in a locked state and does not output a control signal, which effectively prevents the two mutually exclusive control signals of opening and closing from being output to the control circuit at the same time and causing damage to the control circuit, especially when a bridge circuit is used to achieve circuit control ,
  • the interlock circuit can effectively prevent the unilateral bridge arm of the bridge circuit from short-circuiting when the opening and closing control signals are output to the bridge circuit at the same time, which is beneficial to realize the protection of the control circuit and the relay, thereby improving the control device Reliability.
  • the opening signal output terminal k 21 works, and the interlock circuit 160 locks the closing signal output terminal k 22 to make the closing signal
  • the output terminal k 22 does not output a control signal.
  • the closing signal input terminal k 12 receives the closing control signal
  • the closing signal output terminal k 22 works, and the interlock circuit 160 locks the opening signal output terminal k 21 so that the opening signal output terminal k 21 does not output control signal.
  • the closing signal output at this time only the work k 22 does not operate and does not output Close the control signal.
  • the closing signal input terminal k 12 receives the closing control signal
  • the opening signal input terminal k 11 receives the opening control signal
  • the closing signal output terminal k 22 works and the interlock circuit 160 is locked.
  • the turn-on signal output terminal k 21 makes the turn-on signal output terminal k 21 not output a control signal.
  • the interlock circuit 160 locks the opening signal output terminal k 21 and the closing signal output terminal k 22 to open Neither the signal output terminal k 21 nor the closing signal output terminal k 22 output control signals.
  • FIG. 5 shows a timing diagram of the interlock circuit 160 according to an exemplary embodiment of the present disclosure.
  • the interlock circuit 160 is formed by, for example, multiple NAND gates, capacitors, and resistors, and the control signals (open control signal, close control signal) from the micro-control unit 110 and the output signal of the interlock circuit 160, for example, all adopt high level. It is the effective level.
  • the opening signal output terminal k 21 works and outputs the opening control signal CH1 from the micro control unit 110
  • the closing signal output terminal k 22 does not Work and will not output control signals.
  • the opening signal output terminal k 21 of the interlock circuit 160 is still in working state and controls the opening output signal CH1, the interlock circuit closed signal output k 22 locked, so that during the oN control signal, even if the interlock circuit is closed again receive a control signal, the interlock circuit does not output the close control signal.
  • the interlock circuit When the opening control signal CH1 ends, at this time, the interlock circuit only receives the closing control signal CL1 at the closing signal input terminal k 12 , and at this time it will respond to the closing control signal CL1 to make the closing signal output terminal k 22 work and close The control signal CL1 is output. At this time, the open signal control terminal does not work and no control signal is output.
  • the interlock circuit 160 still keeps the closing signal output terminal k 22 working, outputs the closing control signal CL1, and Lock the opening signal output terminal k 21 so that the opening signal output terminal k 21 does not output the opening control signal, that is, during the closing control signal, even if the interlock circuit receives the opening control signal again, the interlock circuit will not output the opening control signal .
  • the interlock circuit 160 locks the opening signal output terminal k 21 and the closing signal output terminal k 22 , Neither the opening signal output terminal k 21 nor the closing signal output terminal k 22 output control signals.
  • the control circuit receives the opening control signal and the closing control signal at the same time, and the control error or even the control is caused.
  • the destruction of the circuit is beneficial to the protection of the control circuit and the relay, thereby improving the reliability of the control device.
  • the interlock circuit can be further configured with a hysteresis through RC discharge and a NAND gate, so that when the opening control signal CH1 is not completely turned off, the closing control signal CL1 will not be immediately closed. Output; when the closing control signal CL1 is not completely turned off, the opening control signal CH2 will not be output immediately. Therefore, it is possible to prevent the control error and destruction of the control circuit caused by the simultaneous output of the mutually exclusive opening control signal and the closing control signal.
  • FIG. 6 shows a schematic diagram of another variant of the control device 100 according to an exemplary embodiment of the present disclosure, which is connected with a detection circuit 170.
  • the control device further includes a detection circuit 170, wherein the detection output terminal t 1 of the detection circuit 170 is connected to the feedback input terminal c 3 of the micro control unit 110, and the detection input terminal t of the detection circuit 170 2 is connected to the detection terminal m 2 of the external load 200, and the detection circuit 170 is used to feed back the state of the external load 200 to the micro-control unit 110.
  • the detection circuit can, for example, feed back the working state of the external load, for example, it can feed back that the external load is in a powered-on working state or in a dormant non-working state, or it can also feed back the working mode of the external load, for example, it can feedback that the external load is in high energy consumption The first working mode, or the second working mode with low energy consumption feedback load.
  • the detection circuit can feed back the overall condition of the external load or only the partial condition of the external load. The present disclosure is not limited by the specific content detected and fed back by the detection circuit.
  • the external load status is fed back to the micro-control unit in real time to form a closed loop, so that the micro-control unit can identify the load status in time, and adjust the control signal of the control device based on the load status, which is beneficial to the control device's response to the load. Reliable control.
  • the detection may be ended, or the state information of the external load may be Update or report and then end the test.
  • the embodiments of the present disclosure are not limited by the specific processing method when the state of the external load is consistent with the expected state of the current input command.
  • the micro control unit 110 when the state of the external load 200 received by the micro control unit 110 is inconsistent with the expected state of the current control signal of the micro control unit 110, the micro control unit 110 sends error information to the main control unit.
  • the error information is sent to the main control unit through the micro-control unit, so that the main control unit can understand the current control state and respond in time, which helps to deal with the error information in time and improve the control. Robustness.
  • the micro-control unit 110 when the state of the external load 200 received by the micro-control unit 110 is inconsistent with the expected state of the current control signal of the micro-control unit 110, the micro-control unit 110 will send the current control signal to a preset number of times. Threshold comparison, if the number of times the current control signal is sent is less than the preset sending threshold, the micro control unit 110 will control the power module 120 to increase the voltage output from the power module to the relay, and the micro control unit 110 will execute the current control signal again send. After sending the current control signal again, the control device can perform the above-mentioned detection process again, that is, obtain the state of the external load through the detection circuit, judge it by the micro-control unit, and perform corresponding processing based on the judgment result. This process can be performed multiple times. Until the state of the external load is consistent with the expected state of the current control signal or the current control signal transmission times are greater than or equal to the transmission threshold.
  • the preset sending threshold may be 3 or 5, or may also be other numerical values, and the embodiment of the present disclosure is not limited by the specific numerical value of the preset sending threshold.
  • the micro control unit when the preset emission threshold is 4, and when the micro control unit executes one control signal transmission, it will continuously send 2 control signals. If the micro control unit executes one transmission, it receives the status of the external load and the current control signal. When the expected state is inconsistent, since the number of times the micro control unit sends the current control signal is 1, which is less than the preset emission threshold of 4, the micro control unit will control the power module 120 to increase the voltage output from the power module to the relay, and execute the current control signal again. The transmission process of the control signal, that is, two control signals are sent continuously.
  • the micro control unit 110 if the number of times the current control signal is sent is greater than or equal to the preset sending threshold, the micro control unit 110 sends error information to the main control unit.
  • sending the error information to the main control unit through the micro-control unit facilitates the main control unit to process it in real time.

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Abstract

一种控制方法及控制装置(100)，所述控制装置(100)连接有外部负载(200)并包括：电源模块(120)；微控制单元(110)，其接收输入命令，并且其电源控制输出端(c1)连接至电源模块(120)的控制输入端(o2)；控制电路(130)，其信号输入端(s2)连接至微控制单元(110)的信号输出端(c2)；继电器(140)，其具有触点，并且其电源输入端(p0)连接至电源模块(120)的电源输出端(o1)，控制输入端(p1)连接至控制电路(130)的信号输出端(s3)，其信号输出端(p2)连接至外部负载(200)的输入端(m1)，所述控制输入端(p1)的控制信号控制触点处于闭合状态或打开状态，当所述触点处于闭合状态时，继电器(140)的信号输出端(p2)向外部负载(200)输出状态控制信号；其中，所述微控制单元(110)与控制电路(130)之间还设置有电平转换电路(150)，所述电平转换电路(150)的信号输入端(v1)连接至微控制单元(110)的信号输出端(c2)，电平转换电路(150)的脉冲输出端(v2)连接至控制电路(130)的信号输入端(s2)。

Description

控制方法、控制装置
相关申请的交叉引用
本申请要求于2019年02月28日提交的中国专利申请第201910151300.2号的优先权，该中国专利申请的全文通过引用的方式结合于此以作为本申请的一部分。
技术领域
本公开涉及控制领域，更具体地涉及一种控制方法及控制装置。
背景技术
随着工业控制及商用控制的发展，继电器，特别是双稳态继电器作为一种电子控制器件，广泛地应用于自动控制装置中以实现自动调节、安全保护、转换电路的功能，控制装置通过控制继电器的工作状态，从而实现对于外部负载电路的控制。
目前的控制装置中，对应于继电器触点的打开、闭合状态控制，微控制单元会发出一个控制信号给控制电路，以控制继电器的线圈并带动触点状态翻转。但是在这样的情况下，首先，控制电路中可能存在同时接收到打开控制信号及闭合控制信号两种互斥信号的情况，使得控制电路的单边臂短路；其次，当微控制单元所发送的控制信号为长时间的高电平信号，会导致继电器线圈烧毁；最后，仅发送一个控制信号控制继电器时，特别是在继电器触点粘连的状态下，继电器不发生相应动作的失效率较高，控制的可靠性低。
因此，需要提供一种可靠的控制装置，以优化控制过程并实现对于外部负载的有效控制。
发明内容
本公开针对上文提到的问题和需求，提出一种控制方法及控制装置。其由于采取了如下文所述的特征而能够克服背景技术中提到的技术问题，且具有下文将介绍的其他优势。
根据本公开的第一方面，提出一种控制装置，所述控制装置连接有外部负载并包括：电源模块；微控制单元，其接收输入命令，并且其电源控制输出端连接至电源模块的控制输入端；控制电路，其信号输入端连接至微控制单元的信号输出端；继电器，其具有触点，其电源输入端连接至电源模块的电源输出端，并且其控制输入端连接至控制电路的信号输出端，其信号输出端连接至外部负载的输入端，所述控制输入端的控制信号控制触点处于闭合状态或打开状态，当所述触点处于闭合状态时，继电器的信号输出端向外部负载输出状态控制信号；其中，所述微控制单元与控制电路之间还设置有电平转换电路，所述电平转换电路的信号输入端连接至微控制单元的信号输出端，电平转换电路的脉冲输出端连接至控制电路的信号输入端，其用于将来自微控制单元的控制信号转换为脉冲信号，所述脉冲信号的有效电平的持续时间小于脉冲时间阈值。
根据本公开的第一方面的可选实施例，当输入命令为开启命令时，微控制单元向电平转换电路按照预定的时间间隔连续发送多个开启控制信号，电平转换电路接收连续多个开启控制信号并向控制电路按照预定的时间间隔连续发送多个开启脉冲信号，控制电路接收继续多个开启脉冲信号并向继电器连续发送多个开启信号，继电器响应于连续多个开启信号打开继电器的触点。
根据本公开的第一方面的可选实施例，当输入命令为闭合命令时，微控制单元向电平转换电路按照预定的时间间隔连续发送多个闭合控制信号，电平转换电路接收连续多个闭合控制信号并向控制电路按照预定的时间间隔连续发送多个闭合脉冲信号，控制电路接收继续多个闭合脉冲信号并向继电器连续发送多个闭合信号，继电器响应于连续多个闭合信号闭合继电器的触点。
根据本公开的第一方面的可选实施例，所述微控制单元的输出端包括开启信号输出端和闭合信号输出端，所述电平转换电路的信号输入端包括开启信号输入端和闭合信号输入端，所述微控制单元与电平转换电路之间还设置有互锁电路，其中，互锁电路的开启信号输入端和闭合信号输入端分别连接至微控制单元的开启信号输出端和闭合信号输出端，互锁电路的开启信号输出端和闭合信号输出端分别连接至电平转换电路的开启信号输入端和闭合信号输入端，且互锁电路的开启信号输出端和闭合信号输出端中的至少一个处于锁定状态，不输出控制信号。
根据本公开的第一方面的可选实施例，当开启信号输入端接收到开启控制信号后，在所述开启控制信号期间，开启信号输出端工作，互锁电路锁定闭合信号输出端使闭合信号输出端不输出控制信号；当闭合信号输入端接收到闭合控制信号后，在所述闭合控制信号期间，闭合信号输出端工作，互锁电路锁定开启信号输出端使开启信号输出端不输出控制信号；当同时在开启信号输入端接收到开启控制信号并且在闭合信号输入端接收到闭合控制信号时，互锁电路锁定开启信号输出端和闭合信号输出端，使开启信号输出端和闭合信号输出端都不输出控制信号。
根据本公开的第一方面的可选实施例，所述控制装置还包括检测电路，其中，所述检测电路的检测输出端连接至微控制单元的反馈输入端，所述检测电路的检测输入端连接至外部负载的检测端，且所述检测电路用于将外部负载的状态反馈至微控制单元。
根据本公开的第一方面的可选实施例，微控制单元判断接收到的外部负载的状态与微控制单元的当前控制信号的预期状态是否一致，并且在判断外部负载的状态与微控制单元的当前控制信号的预期状态不一致时，微控制单元将错误信息发送至主控单元。
根据本公开的第一方面的可选实施例，微控制单元判断接收到的外部负载的状态与微控制单元的当前控制信号的预期状态是否一致，并且在判断外部负载的状态与微控制单元的当前控制信号的预期状态不一致时：微控制单元将当前控制信号的发送次数与预设发送阈值比较，若当前控制信号的发送次数小于预设发送阈值，则微控制单元向电源模块输出提高输出电压的信号，电源模块响应于该信号提高输出至继电器的电压；并且所述微控制单元再次发送当前控制信号至控制电路。
根据本公开的第一方面的可选实施例，若当前控制信号的发送次数大于等于预设发送阈值，微控制单元将错误信息发送至主控单元。
根据本公开的第二方面，提出一种控制方法，所述方法包括：接收输入命令，并基于所述输入命令产生相应的控制信号；基于所述控制信号，产生相应的脉冲信号，所述脉冲信号的有效电平的持续时间小于脉冲时间阈值；基于所述脉冲信号，控制继电器的触点处于闭合状态或打开状态，当所述触点处于闭合状态时，继电器向外部负载输出状态控制信号。
根据本公开的第二方面的可选实施例，当输入命令为开启命令时，产生多个开启控制信号并按照预定的时间间隔连续发送所述多个开启控制信号，以打开继电器的触点。
根据本公开的第二方面的可选实施例，当输入命令为闭合命令时，产生多个闭合控制信号并按照预定的时间间隔连续发送所述多个闭合控制信号，以闭合继电器的触点。
根据本公开的第二方面的可选实施例，所述方法还包括：获取外部负载的状态；判断外部负载的状态与当前输入命令的预期状态是否一致。
根据本公开的第二方面的可选实施例，当外部负载的状态与当前输入命令的预期状态不一致时，在当前控制信号的发送次数小于预设发送阈值的情况下，提高继电器的电源电压并再次发送控制信号。
根据本公开的第二方面的可选实施例，在当前控制信号的发送次数大于或等于预设发送阈值的情况下，产生并输出错误信息。
下文中将结合附图对实施本公开的最优实施例进行更详尽的描述，以便能容易地理解本公开的特征和优点。
附图说明
为了更清楚地说明本公开的实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，而非对本公开的限制。
图1示出了根据本公开的一个示例性实施例的控制方法700的示意图；
图1B示出了根据本公开的一个示例性实施例的控制方法的变体710的示意图；
图2示出了根据本公开的一个示例性实施例的控制装置100的示意图，其包括电平转换电路150；
图2B示出了根据本公开的一个示例性实施例的控制电路130的示意图；
图3示出了根据本公开的一个示例性实施例的电平转换电路150的工作时序图；
图4示出了根据本公开的一个示例性实施例的控制装置100的变体的示意图，其包括互锁电路160和电平转换电路150；
图5示出了根据本公开的一个示例性实施例的互锁电路160的工作时序图；
图6示出了根据本公开的一个示例性实施例的控制装置100的另一个变体的示意图，其连接有检测电路170。
具体实施方式
将参照附图详细描述根据本公开的各个实施例。这里，需要注意的是，在附图中，将相同的附图标记赋予基本上具有相同或类似结构和功能的组成部分，并且将省略关于它们的重复描述。
为使本公开的实施例的目的、技术方案和优点更加清楚，下面将结合本公开的实施例的附图，对本公开的实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
如本申请和权利要求书中所示，除非上下文明确提示例外情形，“一”、“一个”、“一种”和/或“该”等词并非特指单数，也可包括复数。一般说来，术语“包括”与“包含”仅提示包括已明确标识的步骤和元素，而这些步骤和元素不构成一个排它性的罗列，方法或者设备也可能包含其他的步骤或元素。
虽然本申请对根据本申请的实施例的系统中的某些模块做出了各种引用，然而，任何数量的不同模块可以被使用并运行在用户终端和/或服务器上。所述模块仅是说明性的，并且所述系统和方法的不同方面可以使用不同模块。
本申请中使用了流程图用来说明根据本申请的实施例的系统所执行的操作。应当理解的是，前面或下面操作不一定按照顺序来精确地执行。相反，根据需要，可以按照倒序或同时处理各种步骤。同时，也可以将其他操作添加到这些过程中，或从这些过程移除某一步或数步操作。
图1示出了根据本公开的一个示例性实施例的控制方法700的示意图。
参照图1，首先，在步骤S701中，接收输入命令，并基于所述输入命令产生相应的控制信号。
所述输入命令可以是用户直接输入的命令，或者也可以是对用户的控制指令进行进一步处理而生成的命令。本公开的实施例不受所述输入命令的来源的限制。
所生成的控制信号例如可以为电压控制信号，或者也可以为电流控制信号，其可为持续信号或脉冲信号，并且可以采用高电平或低电平为其有效电平。本公开的实施例不受控制信号的类型的限制。
在产生控制信号后，在步骤S702中，基于所述控制信号，产生相应的脉冲信号，所述脉冲信号的有效电平的持续时间小于脉冲时间阈值。
设置所述脉冲信号(开启脉冲信号、闭合脉冲信号)的脉冲时间阈值旨在避免由于信号的持续时间较长(例如持续时间为10s)，而导致继电器线圈烧毁的情况。所述脉冲时间阈值可以调节，例如对于开启脉冲信号和闭合脉冲信号，其脉冲时间阈值可均设置为20ms，或者对开启脉冲信号的信号，将其脉冲时间阈值设置为10ms，对闭合脉冲信号，将其脉冲时间阈值设置为25ms。本公开不受所设置的脉冲时间阈值的具体数值的限制。
通过设置脉冲时间阈值，并设置所产生的脉冲信号的有效电平的持续时间小于脉冲时间阈值，可以有效地避免继电器线圈由于控制信号的持续时间较长而烧毁的情况。有利于对于继电器线圈的保护，且可以实现良好的继电器控制。
最后，在步骤S703中，基于所述脉冲信号，控制继电器140的触点处于闭合状态或打开状态。且当所述触点处于闭合状态时，继电器140向外部负载200输出状态控制信号。
所述外部负载200可以是单独的负载元件，例如接触器(iCT)或脉冲开关(iTL)，其也可以是由多个负载元件采取并联或串联方式以形成的负载电路，本公开的实施例不受外部负载的组成方式及结构的限制。
在一些实施例中，当输入命令为开启命令时，产生多个开启控制信号并按照预定的时间间隔连续发送所述多个开启控制信号，以打开继电器140的触点。
相较于仅发送一个控制信号来控制继电器处于打开状态的情况，按照预定的时间间隔连续发送多个开启控制信号可有效地实现对于继电器的状态控制，特别是在继电器触点粘连的状态下可以保证继电器可靠的动作，降低继电器的失效率。
在一些实施例中，当输入命令为闭合命令时，产生多个闭合控制信号并按照预定的时间间隔连续发送所述多个闭合控制信号，以闭合继电器140的触点。
相较于仅发送一个控制信号来控制继电器处于闭合状态的情况，按照预定的时间间隔连续发送多个闭合控制信号可有效地实现对于继电器的状态控制，降低继电器的失效率。
图1B示出了根据本公开的一个示例性实施例的控制方法的变体710的示意图。
参照图1B，首先，在步骤S711中，获取外部负载200的状态。
所述外部负载的状态可以是从外部负载的检测端所检测到的状态信号，或者其可以是基于检测电路获取的外部负载的触点状态信号、电压信号或电流信号，本公开的实施例不受获取到外部负载状态的类型的限制。
其后，在步骤S712中，判断外部负载200的状态与当前输入命令的预期状态是否一致。
当外部负载200的状态与当前输入命令的预期状态一致时，例如可结束此次检测过程，或者也可以将外部负载的状态信息更新或上报。本公开的实施例不受外部负载的状态与当前输入命令的预期状态一致时的具体处理方式的限制。
在一些实施例中，当外部负载200的状态与当前输入命令的预期状态不一致时，可在步骤S713中，进一步判断当前控制信号的发送次数是否小于预设发送阈值。若当前控制信号的发送次数小于预设发送阈值，则在步骤S714中，提高继电器140的电源电压并再次发送当前控制信号。其后，如图1B所示，可以返回步骤S711并再次执行上述检测过程710，该过程可进行多次，直至外部负载的状态与当前控制信号的预期状态一致或 当前控制信号的发送次数大于等于发送阈值。若当前控制信号的发送次数大于等于预设发送阈值，在步骤S715中，产生并输出错误信息，并结束此次检测过程。
所述预设发送阈值可以为3或5，或者也可以为其他的数值，本公开的实施例不受预设发送阈值的具体数值的限制。
例如预设发射阈值为4时，且执行一次控制信号的发送时，将连续发送2个控制信号。若执行一次发射后，接收到外部负载的状态与当前控制信号的预期状态不一致时，由于发送当前控制信号的次数为1，其小于预设发射阈值4，则提高电源模块输出至继电器的电压，并且再一次执行当前控制信号的发射过程，即，连续发送两个控制信号。
当负载状态与预期状态不一致时，通过提高电源输出电压来增加继电器触点之间的相互作用力，并重复发送当前控制信号，可有效地实现对于继电器状态的控制，特别是在继电器触点粘连的情况下，有助于打开粘连的触点。
图2示出根据本公开的一个示例性实施例的控制装置100的示意图。
参照图2可以看出，控制装置100连接有外部负载200，并且该控制装置100包括微控制单元110、电源模块120、控制电路130、继电器140。
所述电源模块120例如可为直流电源或交流电源，本公开的实施例不受电源类型的限制。
所述微控制单元110用于接收输入命令，所述输入命令例如是本地输入命令，如用户键入的操作指令或用户通过操作按键或旋钮传入的命令，或者是中央输入命令，例如来自主控单元的输入命令，本公开的实施例不受输入命令的类型的限制。
所述微控制单元110例如可以通过有线的方式接收输入命令，或者其也可以通过无线的方式，例如通过Zigbee通信、以太网(Ethernet)、移动通信技术或者通过通用分组无线服务技术(GPRS)接收输入命令。本公开的实施例不受微控制单元接收输入命令的方式的限制。
所述微控制单元110的电源控制输出端c 1连接至电源模块120的控制输入端o 2，用于控制电源模块输出至继电器的输出电压。
所述控制电路例如可以是桥式电路，如H桥电路，或者其也可以是其他形式或构造的控制电路，本公开的实施例不受控制电路的组成及其结构 的限制。
所述控制电路130的信号输入端s 2连接至微控制单元110的信号输出端c 2，使得该控制电路可经由信号输入端s 2接收来自微控制单元的控制信号。
所述继电器140具有触点，其电源输入端p 0连接至电源模块120的电源输出端o 1，该继电器由电源模块供电；并且其控制输入端p 1连接至控制电路130的信号输出端s 3，控制输入端p 1的接收的控制信号控制触点处于闭合状态或打开状态；该继电器140的还具有信号输出端p 2，其信号输出端p 2连接至外部负载200的输入端m 1，当所述触点处于闭合状态时，继电器140的信号输出端p 2向外部负载200输出状态控制信号。
例如，当继电器触点为闭合状态时，信号输出端p 2的状态控制信号控制所述外部负载处于工作状态，其被上电并执行相应的功能；当继电器的触点处于打开状态时，信号输出端p 2不输出状态控制信号，所述外部负载处于休眠状态，其不会被上电并且不再执行相应功能。或者其也可以被设置为，当继电器触点为闭合状态，信号输出端p 2的状态控制信号控制外部负载处于第一工作状态，其以较高功耗运行并执行各类工作；当继电器触点为断开状态时，信号输出端p 2不输出状态控制信号，则外部负载处于第二工作状态，其以较低功耗运行，仅执行特定工作。本公开的实施例不受外部负载的具体工作状态及其工作内容的限制。
图2B示出了根据本公开的一个示例性实施例的控制电路130的示意图。
参照图2B，上述过程可以更具体地描述。例如当控制电路为H桥电路时，其可具有4条桥臂，其分别为B 1、B 2、B 3、B 4，且其信号输入端s 2包括开启信号输入端s 21和闭合信号输入端s 22。当其在开启信号输入端s 21接收来自微控制单元的开启控制信号时，即其开启信号输入端s 21接收高电平时，桥臂B 2及B 4导通，此时控制电路的信号输出端s 3输出开启信号，即如图2B中实线箭头所示的电流信号，所述继电器响应于接收到的开启信号控制其继电器触点处于打开状态；当其在闭合信号输入端s 22接收来自微控制单元的闭合控制信号时，即其闭合信号输入端s 22接收高电平时，桥臂B 1及B 3导通，此时控制电路的信号输出端s 3输出闭合信号，即如图2B中虚线箭头所示的电流信号，所述继电器响应于所接收到的闭合信号控制其继电器触点处于闭合状态。
其中，所述微控制单元110与控制电路130之间还设置有电平转换电路150，所述电平转换电路150的信号输入端v 1连接至微控制单元110的信号输出端c 2，电平转换电路150的脉冲输出端v 2连接至控制电路130的信号输入端s 2。所述电平转换电路用于将来自微控制单元的连续控制信号转换为相应的脉冲信号，所述脉冲信号的有效电平的持续时间小于脉冲时间阈值。
所述电平转换电路例如可以包括单稳态触发器，以将控制信号转换为相应的脉冲信号，或通过多个电子器件相结合以实现电平转换的功能，本公开不受电平转换电路的电路构造及组成的限制。
图3示出了根据本公开的一个示例性实施例的电平转换电路150的时序示意图。
结合图2和图3，可以更具体地描述上述电平转换电路。例如当控制电路为图2B中所示出的H桥电路时，微控制单元110的信号输出端c 2包括开启信号输出端c 21以及闭合信号输出端c 22，其中开启信号输出端c 21输出开启控制信号，闭合信号输出端c 22输出闭合控制信号。电平转换电路150的信号输入端v 1包括开启信号输入端v 11及闭合信号输入端v 12，分别用于接收开启控制信号及闭合控制信号，电平转换电路150的脉冲输出端v 2包括开启脉冲输出端v 21及闭合脉冲输出端v 22，分别用于输出开启及闭合脉冲信号，实现对于控制电路的控制，且上述信号均采用高电平为其有效电平。
当电平转换电路150的开启信号输入端v 11接收到来自微控制单元110的连续多个开启控制信号CH1、CH2、CH3时，其中开启控制信号CH1例如持续100ms，则电平转换电路150将生成相应的多个开启脉冲信号VH1、VH2、VH3并通过开启脉冲输出端v 21将多个开启脉冲信号连续输出至控制电路130，其中所生成的开启脉冲信号VH1例如持续10ms。且对于每个开启控制信号而言，例如以开启控制信号CH1为例，当生成对应的开启脉冲信号VH1后，在该开启控制信号CH1持续时间内，电平转换电路150将不再输出开启脉冲信号，直至后续的开启控制信号CH2、CH3到达，电平转换电路150生成相应的脉冲信号VH2、VH3。
进一步地，当电平转换电路150的闭合信号输入端v 12接收来自微控制单元110的连续多个闭合控制信号CL1、CL2、CL3时，其中闭合控制信号CL1例如持续60ms，则电平转换电路150将生成相应的多个闭合脉冲信号 VL1、VL2、VL3并通过闭合脉冲输出端v 22将多个闭合脉冲信号连续输出至控制电路130，其中所生成的闭合脉冲信号VL1例如持续10ms。且对于每个闭合控制信号而言，例如以闭合控制信号CL1为例，当生成对应的闭合脉冲信号VL1后，在该闭合控制信号CL1持续时间内，电平转换电路150将不再输出闭合脉冲信号，直至后续的闭合控制信号CL2、CL3到达，电平转换电路150生成相应的闭合脉冲信号VL2、VL3。
通过设置电平转换电路，将来自微控制单元的控制信号转换为脉冲信号，并进一步设置所述脉冲信号的有效电平的持续时间小于脉冲时间阈值，有效地避免了微控制单元长时间发送高电平信号而导致继电器线圈被烧毁的情况，有利于实现对于继电器的保护。
在一些实施例中，当输入命令为开启命令时，微控制单元110向电平转换电路150按照预定的时间间隔连续发送多个开启控制信号，电平转换电路150接收连续多个开启控制信号并向控制电路120按照预定的时间间隔连续发送多个开启脉冲信号，控制电路120接收连续多个开启脉冲信号并向继电器140连续发送多个开启信号，继电器140响应于连续多个开启信号打开继电器140的触点。
所述预定的时间间隔例如可为10ms或者为15ms，所述连续发送多个开启控制信号例如可为连续发送三个开启控制信号，或者连续发送五个开启控制信号，本公开不受预定的时间间隔的时长和连续发送的开启控制信号的具体个数的限制。
相较于仅发送一个控制信号来控制继电器处于打开状态的情况，按照预定的时间间隔连续发送多个开启控制信号可有效地实现对于继电器的状态控制，特别是在继电器触点粘连的状态下可以保证继电器可靠的动作，降低继电器的失效率。
在一些实施例中，当输入命令为闭合命令时，微控制单元110向电平转换电路150按照预定的时间间隔连续发送多个闭合控制信号，电平转换电路150接收连续多个闭合控制信号并向控制电路120按照预定的时间间隔连续发送多个闭合脉冲信号，控制电路120接收继续多个闭合脉冲信号并向继电器140连续发送多个闭合信号，继电器140响应于连续多个闭合信号闭合继电器140的触点。
所述预定的时间间隔例如可为10ms或者为15ms，所述连续发送多个 闭合控制信号例如可为连续发送三个闭合控制信号，或者连续发送五个闭合控制信号，本公开不受预定的时间间隔的时长和连续发送的闭合控制信号的具体个数的限制。
相较于仅发送一个闭合控制信号来控制继电器处于闭合状态的情况，按照预定的时间间隔连续发送多个闭合控制信号，可有效地实现对于继电器状态的控制，保证了继电器可靠的动作，降低了继电器的失效率。
图4示出了根据本公开的一个示例性实施例的控制装置100的一个变体的示意图，其包括互锁电路160。
参照图4，在一些实施例中，所述微控制单元110的信号输出端c 2包括开启信号输出端c 21和闭合信号输出端c 22，所述电平转换电路150的信号输入端v 1包括开启信号输入端v 11和闭合信号输入端v 12，所述微控制单元110与电平转换电路150之间还设置有互锁电路160。
其中，互锁电路160的开启信号输入端k 11连接至微控制单元110的开启信号输出端c 21，互锁电路160的闭合信号输入端k 12连接至微控制单元110的闭合信号输出端c 22，互锁电路160的开启信号输出端k 21连接至电平转换电路150的开启信号输入端v 11，互锁电路160的闭合信号输出端k 22连接至电平转换电路150的闭合信号输入端v 12，且互锁电路的开启信号输出端k 21和闭合信号输出端k 22中的至少一个处于锁定状态，不输出控制信号。
根据上述特征，将互锁电路设置于微控制单元及电平转换电路之间，在通过脉冲信号实现对继电器的保护的基础上，进一步通过设置互锁电路并设置其开启信号输出端和闭合信号输出端中的至少一个处于锁定状态，不输出控制信号，有效地避免开启及闭合两种互斥的控制信号同时输出至控制电路而导致控制电路毁坏，特别是当采用桥式电路实现电路控制时，设置互锁电路可有效地防止在开启及闭合控制信号同时输出至桥式电路时，桥式电路的单边桥臂短路的情况，有利于实现对控制电路及继电器的保护，从而提高控制装置的可靠性。
在一些实施例中，当开启信号输入端k 11接收到开启控制信号后，在所述开启控制信号期间，开启信号输出端k 21工作，互锁电路160锁定闭合信号输出端k 22使闭合信号输出端k 22不输出控制信号。
其可更具体的描述，例如当仅开启信号输入端k 11接收到开启控制信 号时，此时仅开启信号输出端k 21工作，互锁电路的闭合信号输出端k 22不工作且不会输出闭合控制信号。当开启信号输入端k 11接收到开启控制信号后，在该开启控制信号期间，闭合信号输入端k 12再接收到闭合控制信号时，此时开启信号输出端k 21工作，互锁电路160将锁定闭合信号输出端k 22使闭合信号输出端k 22不输出控制信号。
当闭合信号输入端k 12接收到闭合控制信号后，在所述闭合控制信号期间，闭合信号输出端k 22工作，互锁电路160锁定开启信号输出端k 21使开启信号输出端k 21不输出控制信号。
其可更具体的描述，例如当仅闭合信号输入端k 12接收到闭合控制信号时，此时仅闭合信号输出端k 22工作，互锁电路的闭合信号输出端k 22不工作且不会输出闭合控制信号。当闭合信号输入端k 12接收到闭合控制信号后，在该闭合控制信号期间，开启信号输入端k 11再接收到开启控制信号时，此时闭合信号输出端k 22工作，互锁电路160锁定开启信号输出端k 21使开启信号输出端k 21不输出控制信号。
当同时在开启信号输入端k 11接收到开启控制信号并且在闭合信号输入端k 12接收到闭合控制信号时，互锁电路160锁定开启信号输出端k 21和闭合信号输出端k 22，使开启信号输出端k 21和闭合信号输出端k 22都不输出控制信号。
图5示出了根据本公开的一个示例性实施例的互锁电路160的时序图。
参照图5，可以更具体地描述上述互锁电路。其中互锁电路160例如由多个与非门及电容、电阻形成，且来自微控制单元110的控制信号(开启控制信号、闭合控制信号)以及互锁电路160的输出信号例如均采用高电平为其有效电平。
当互锁电路160仅开启信号输入端k 11接收到来自微控制单元110的开启控制信号CH1时，此时开启信号输出端k 21工作并输出该开启控制信号CH1，闭合信号输出端k 22不工作且不会输出控制信号。随后，在该开启控制信号CH1的持续时间内，闭合信号输入端k 12又接收到闭合控制信号CL1时，此时互锁电路160的开启信号输出端k 21仍处于工作状态并将该开启控制信号CH1输出，互锁电路将闭合信号输出端k 22锁定，使得在开启控制信号期间，即使互锁电路再接收到闭合控制信号，互锁电路也不会输出该闭合控制信号。
当开启控制信号CH1结束后，此时互锁电路仅闭合信号输入端k 12接收到闭合控制信号CL1，此时其将响应于该闭合控制信号CL1，使得闭合信号输出端k 22工作，将闭合控制信号CL1输出，此时开启信号控制端不工作且不会输出控制信号。在该闭合控制信号CL1的持续时间内，即使开启信号输入端k 11再接收到开启控制信号CH2，互锁电路160也仍保持闭合信号输出端k 22工作，将该闭合控制信号CL1输出，并锁定开启信号输出端k 21使开启信号输出端k 21不输出开启控制信号，即在该闭合控制信号期间，即使互锁电路再接收到开启控制信号，互锁电路也不会输出该开启控制信号。
当同时在开启信号输入端k 11接收到开启控制信号CH3并且在闭合信号输入端k 12接收到闭合控制信号CL2时，互锁电路160锁定开启信号输出端k 21和闭合信号输出端k 22，使开启信号输出端k 21和闭合信号输出端k 22都不输出控制信号。
根据上述特征，通过设置互锁电路在三种不同情况下的工作模式，在各种控制情况下，均有效地避免了控制电路同时接收到开启控制信号及闭合控制信号而出现控制错误甚至造成控制电路毁坏的情况，有利于实现对控制电路及继电器的保护，从而提高控制装置的可靠性。
在一些实施例中，参照图5，互锁电路可进一步设置经由RC放电及与非门的滞回作用，使得互锁电路在开启控制信号CH1未完全关断时，闭合控制信号CL1不会立即输出；在闭合控制信号CL1未完全关断时，开启控制信号CH2不会立即输出。从而防止互斥的开启控制信号和闭合控制信号同时输出所造成控制电路的控制错误及毁坏。
图6示出了根据本公开的一个示例性实施例的控制装置100的另一个变体的示意图，其连接有检测电路170。
参照图6，所述控制装置还包括检测电路170，其中，所述检测电路170的检测输出端t 1连接至微控制单元110的反馈输入端c 3，所述检测电路170的检测输入端t 2连接至外部负载200的检测端m 2，且所述检测电路170用于将外部负载200的状态反馈至微控制单元110。
所述检测电路例如可以反馈外部负载的工作状态，例如反馈外部负载处于上电的工作状态或处于休眠的不工作状态，或者其也可以反馈外部负载的工作模式，例如可反馈外部负载处于高能耗的第一工作模式，或者反馈负载处于低能耗的第二工作模式。此外，检测电路可以反馈外部负载的 整体情况，也可以仅反馈外部负载的局部情况，本公开不受检测电路所检测及反馈的具体内容的限制。
通过设置检测电路，将外部负载状态实时反馈至微控制单元，形成闭环回路，使得微控制单元可及时地识别负载状态，并基于负载状态对于控制装置控制信号进行调整，有利于控制装置对于负载的可靠控制。
在一些实施例中，当微控制单元110接收到的外部负载200的状态与微控制单元110的当前控制信号的预期状态一致时，例如可结束此次检测，或者也可以将外部负载的状态信息更新或上报其后再结束此次检测。本公开的实施例不受外部负载的状态与当前输入命令的预期状态一致时的具体处理方式的限制。
在一些实施例中，当微控制单元110接收到的外部负载200的状态与微控制单元110的当前控制信号的预期状态不一致时，微控制单元110将错误信息发送至主控单元。
在当前控制信号的预期状态不一致时，通过微控制单元将错误信息发送至主控单元，使得主控单元可以及时了解当前控制状态并作出响应，有助于对错误信息进行及时处理，提高控制的鲁棒性。
在一些实施例中，当微控制单元110接收到的外部负载200的状态与微控制单元110的当前控制信号的预期状态不一致时，则微控制单元110将发送当前控制信号的次数与预设发送阈值比较，若发送当前控制信号的次数小于预设发送阈值，则微控制单元110将控制电源模块120以提高电源模块输出至继电器的电压，并且所述微控制单元110将再次执行当前控制信号的发送。再次发送当前控制信号后，控制装置可再次执行上述检测过程，即，通过检测电路获取外部负载的状态，通过微控制单元对其进行判断并基于判断结果进行相应处理，该过程可进行多次，直至外部负载的状态与当前控制信号的预期状态一致或当前控制信号的发送次数大于等于发送阈值。
所述预设发送阈值可以为3或5，或者也可以为其他的数值，本公开的实施例不受预设发送阈值的具体数值的限制。
例如预设发射阈值为4时，且微控制单元执行一次控制信号的发送时，将连续发送2个控制信号，则若微控制单元执行一次发射后，接收到外部负载的状态与当前控制信号的预期状态不一致时，由于微控制单元发送当 前控制信号的次数为1，其小于预设发射阈值4，则微控制单元将控制电源模块120以提高电源模块输出至继电器的电压，并且再一次执行当前控制信号的发射过程，即，连续发送两个控制信号。
当负载状态与预期状态不一致时，通过提高电源输出电压来增加继电器触点之间的相互作用力，并重复发送当前控制信号，可有效地实现对于继电器状态的控制，特别是在继电器触点粘连的情况下，有助于打开粘连的触点。
在一些实施例中，若当前控制信号的发送次数大于等于预设发送阈值，则微控制单元110将错误信息发送至主控单元。
在提高电源输出电压并重复发送预定数量的控制信号仍未解决当前问题时，通过微控制单元将错误信息发送至主控单元有利于主控单元对其进行实时处理。
上文中参照优选的实施例详细描述了本公开所提出的控制装置，然而本领域技术人员可理解的是，在不背离本公开理念的前提下，可以对上述具体实施例做出多种变型和改型，且可以对本公开提出的各种技术特征、结构进行多种组合，而不超出本公开的保护范围。

Claims (15)

  1. 一种控制方法，所述方法包括：
    接收输入命令，并基于所述输入命令产生相应的控制信号；
    基于所述控制信号，产生相应的脉冲信号，所述脉冲信号的有效电平的持续时间小于脉冲时间阈值；
    基于所述脉冲信号，控制继电器(140)的触点处于闭合状态或打开状态，当所述触点处于闭合状态时，继电器(140)向外部负载(200)输出状态控制信号。
  2. 如权利要求1所述的控制方法，其中，当输入命令为开启命令时，产生多个开启控制信号并按照预定的时间间隔连续发送所述多个开启控制信号，以打开继电器(140)的触点。
  3. 如权利要求1所述的控制方法，其中，当输入命令为闭合命令时，产生多个闭合控制信号并按照预定的时间间隔连续发送所述多个闭合控制信号，以闭合继电器(140)的触点。
  4. 如权利要求1所述的控制方法，还包括：
    获取外部负载(200)的状态；
    判断外部负载(200)的状态与当前输入命令的预期状态是否一致。
  5. 如权利要求4所述的控制方法，其中，
    当外部负载(200)的状态与当前输入命令的预期状态不一致时，在当前控制信号的发送次数小于预设发送阈值的情况下，提高继电器(140)的电源电压并再次发送控制信号。
  6. 如权利要求5所述的控制方法，其中，
    在当前控制信号的发送次数大于或等于预设发送阈值的情况下，产生并输出错误信息。
  7. 一种控制装置(100)，其中，所述控制装置(100)连接有外部负载(200)并包括：
    电源模块(120)；
    微控制单元(110)，其接收输入命令，并且其电源控制输出端(c 1)连接至电源模块(120)的控制输入端(o 2)；
    控制电路(130)，其信号输入端(s 2)连接至微控制单元(110)的信号输出端(c 2)；
    继电器(140)，其具有触点，并且其电源输入端(p 0)连接至电源模块(120)的电源输出端(o 1)，控制输入端(p 1)连接至控制电路(130)的信号输出端(s 3)，其信号输出端(p 2)连接至外部负载(200)的输入端(m 1)，所述控制输入端(p 1)的控制信号控制触点处于闭合状态或打开状态，当所述触点处于闭合状态时，继电器(140)的信号输出端(p 2)向外部负载输出状态控制信号；
    其中，所述微控制单元(110)与控制电路(130)之间还设置有电平转换电路(150)，所述电平转换电路(150)的信号输入端(v 1)连接至微控制单元(110)的信号输出端(c 2)，电平转换电路(150)的脉冲输出端(v 2)连接至控制电路(130)的信号输入端(s 2)，其用于将来自微控制单元的控制信号转换为脉冲信号，所述脉冲信号的有效电平的持续时间小于脉冲时间阈值。
  8. 如权利要求7所述的控制装置(100)，当输入命令为开启命令时，微控制单元(110)向电平转换电路(150)按照预定的时间间隔连续发送多个开启控制信号，电平转换电路(150)接收连续多个开启控制信号并向控制电路(120)按照预定的时间间隔连续发送多个开启脉冲信号，控制电路(120)接收继续多个开启脉冲信号并向继电器(140)连续发送多个开启信号，继电器(140)响应于连续多个开启信号打开继电器(140)的触点。
  9. 如权利要求7所述的控制装置(100)，当输入命令为闭合命令时，微控制单元(110)向电平转换电路(150)按照预定的时间间隔连续发送多个闭合控制信号，电平转换电路(150)接收连续多个闭合控制信号并向控制电路(120)按照预定的时间间隔连续发送多个闭合脉冲信号，控制电路(120)接收继续多个闭合脉冲信号并向继电器(140)连续发送多个闭合信号，继电器(140)响应于连续多个闭合信号闭合继电器(140)的触点。
  10. 如权利要求7所述的控制装置(100)，其中，所述微控制单元(110)的信号输出端(c 2)包括开启信号输出端(c 21)和闭合信号输出端(c 22)，所述电平转换电路(150)的信号输入端(v 1)包括开启信号输入端(v 11) 和闭合信号输入端(v 12)，所述微控制单元(110)与电平转换电路(150)之间还设置有互锁电路(160)，
    其中，互锁电路(160)的开启信号输入端(k 11)和闭合信号输入端(k 12)分别连接至微控制单元(110)的开启信号输出端(c 21)和闭合信号输出端(c 22)，互锁电路(160)的开启信号输出端(k 21)和闭合信号输出端(k 22)分别连接至电平转换电路(150)的开启信号输入端(v 11)和闭合信号输入端(v 12)，且互锁电路的开启信号输出端(k 21)和闭合信号输出端(k 22)中的至少一个处于锁定状态，不输出控制信号。
  11. 如权利要求10所述的控制装置(100)，其中，
    当开启信号输入端(k 11)接收到开启控制信号后，在所述开启控制信号期间，开启信号输出端(k 21)工作，互锁电路(160)锁定闭合信号输出端(k 22)使闭合信号输出端(k 22)不输出控制信号；
    当闭合信号输入端(k 12)接收到闭合控制信号后，在所述闭合控制信号期间，闭合信号输出端(k 22)工作，互锁电路(160)锁定开启信号输出端(k 21)使开启信号输出端(k 21)不输出控制信号；
    当同时在开启信号输入端(k 11)接收到开启控制信号并且在闭合信号输入端(k 12)接收到闭合控制信号时，互锁电路(160)锁定开启信号输出端(k 21)和闭合信号输出端(k 22)，使开启信号输出端(k 21)和闭合信号输出端(k 22)都不输出控制信号。
  12. 如权利要求7所述的控制装置(100)，其中，所述控制装置还包括检测电路(170)，其中，
    所述检测电路(170)的检测输出端(t 1)连接至微控制单元(110)的反馈输入端(c 3)，所述检测电路(170)的检测输入端(t 2)连接至外部负载(200)的检测端(m 2)，且所述检测电路(170)用于将外部负载(200)的状态反馈至微控制单元(110)。
  13. 如权利要求12所述的控制装置(100)，其中，微控制单元判断(110)接收到的外部负载(200)的状态与微控制单元(110)的当前控制信号的预期状态是否一致，并且在判断外部负载(200)的状态与微控制单元(110)的当前控制信号的预期状态不一致时，微控制单元(110)将错误信息发送至主控单元。
  14. 如权利要求13所述的控制装置(100)，其中，微控制单元(110) 判断接收到的外部负载(200)的状态与微控制单元(110)的当前控制信号的预期状态是否一致，并且在判断外部负载(200)的状态与微控制单元(110)的当前控制信号的预期状态不一致时：
    微控制单元(110)将当前控制信号的发送次数与预设发送阈值比较，若当前控制信号的发送次数小于预设发送阈值，则微控制单元向电源模块(120)输出提高输出电压的信号，电源模块响应于该信号提高输出至继电器(140)的电压；并且所述微控制单元(110)再次发送当前控制信号至控制电路(130)。
  15. 如权利要求14所述的控制装置(100)，其中，若当前控制信号的发送次数大于等于预设发送阈值，微控制单元(110)将错误信息发送至主控单元。
PCT/CN2019/078717 2019-02-28 2019-03-19 控制方法、控制装置 Ceased WO2020172924A1 (zh)

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