JPS602034A - Terminal circuit of remote control system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a terminal of a remote control system that uses a so-called remote control breaker that can be operated remotely and remotely controls a seven-unit breaker based on a transmission signal from a transmitter. It is related to circuits.

[Background technology]

2. Description of the Related Art Conventionally, remote control devices have been proposed that send control signals to a receiver located far from a transmitter to control a load, such as a light or a heater. Relays and semiconductor elements are generally used as load switching elements used in such remote control devices, and when considering overcurrent protection, it is necessary to use them in conjunction with breakers, fuses, etc. Recently, a so-called seven-comb breaker, which can be controlled remotely, has been proposed for convenience of use.

Figure 1 shows a basic usage example of a remotely controllable breaker called a beam combiner BR. When the control switch sw, which has a neutral point, is turned on to terminal a in the figure, .

Excitation current is passed to excitation coil L1 for driving the main contact opening/closing mechanism.Excitation coil LhAuxiliary contact rlxTiode D! , flows from the commercial power supply VS through the circuit of the control switch SW to excite the excitation coil L1, and as a result, the electromagnetic force from the excitation coil L1 drives the main contact opening/closing mechanism (not shown) to open the main contact r. is turned on, and at the same time, the auxiliary contact R is switched from the A terminal to the B terminal side, thereby cutting off the excitation current flowing through the excitation coil L. Further, the operating states of the main contact rQ and the auxiliary contact r1 are mechanically maintained by a main contact opening/closing mechanism. To return to the original operating state, that is, to turn off the main contact RO, switch the control switch SW to the b@ side, or operate the control switch SW provided in the main contact opening/closing mechanism. When switching to the b terminal, the b of the control switch 8 field, diode D2, and auxiliary contact r1
On the terminal side, current flows through the circuit of the excitation coil L1, and the electromagnetic force of the excitation coil reverses the main contact opening/closing mechanism, and the main contact r. It turns off.

Simultaneously with this turning off, the auxiliary contact r1 is switched from the B terminal to the A terminal side, cutting off the excitation current, and when the control switch SW is next turned on to the A terminal side, the excitation coil L1 is switched again.
Main contact r. It is prepared so that the excitation current flows in the direction that generates the electromagnetic force that turns it on.

By the way, a terminal circuit has recently been proposed in which the seven combiner breakers BR are operated by a remote control system using, for example, a power line carrier wave. As shown in Figure 2, the transmitter (1) and the receiver (2) are connected to a power line 5 (3
), and from the receiver f+), a control signal consisting of address data of the receiver (2), control data for turning on or off the remote control breaker BR, which is a control load connected to the receiver (2), etc. as the power line carrier wave (3)
-The power receiver (2) transmits the signal by superimposing it on the transmitter fl
) Receives the control signal transmitted from d, and when the address data in the received data matches its own address, takes in the next control data and uses it instead of the control switch sW based on the control data. drive the switching circuit that was
An excitation current is passed in a predetermined direction through the excitation coil L1 to turn on or off the remote control breaker BR, and the remote controller breaker B is turned on or off.
Main contact r of R. It turns on or off the load (4) connected to. By the way, in the combiner R, the main opening/closing mechanism (not shown) is driven by the overcurrent detection structure (not shown) and the main contact roff: opens, or the main contact is opened/closed by manual operation using the operating lever (5). It also has a function of opening and closing the main contact RO by driving a mechanism (not shown).

For example, remote control using the above-mentioned transmitter (1) can be performed at a location relatively far from the load (4), or if the transmitter (1) is equipped with a timer function to remotely control the load (4). On the other hand, operations on the t-comb breaker BR side may include operations during maintenance, tripping when overcurrent is detected, etc. using the operation lever (5). Therefore, the remote control system using the T-comb breaker BR as described above has the following problems.

Tsu'! ! If remote control is performed using a control signal from the transmitter (11) during operation on the breaker BR side, for example during maintenance work, the t combiner breaker BR
There was a danger that the switch would turn on and workers who did not notice it would feel it. To avoid this, it is possible to install an off-lock switch in the terminal circuit that does not accept remote control from the transmitter (+), but if you are used to using a normal breaker, you can use the control lever (4). Even if I turned it off, I forgot to turn the off-lock switch to 0,
There is also the fear that it will be of no use.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned drawbacks, and its purpose is to prohibit manual operation on the breaker side or prohibit operation from the transmitter side when a trip occurs due to overcurrent detection. It is possible to provide terminal circuits for remote control systems.

[Disclosure of the invention]

FIG. 8 shows an overall diagram of the remote control system that is the basis of the present invention, in which +1+ is a transmitter, (2) is a receiver, and (3) is a transmitter.
1 is a power line which is a transmission line, (4) is a load, and (5) is an operating lever for a remote control breaker BR, and these parts basically operate in the same way as each part of the circuit block shown in FIG. In the figure, (6) distinguishes between operation on the remote control breaker BR side, which is the main configuration of the present invention, and remote control from the transmitter (1) side, and if the operation is on the remote control breaker BR side, the transmitter This is an operation determination circuit that prohibits operation at f1+. Therefore, the terminal circuit of the remote control system is the BR1 receiver (1) and the operation determination circuit (6).
Consisted of. FIG. 4 shows a specific circuit of the main part of one embodiment. Next, the operation of this embodiment will be explained based on this circuit diagram. The receiver (2) is composed of a signal processing section (2a), a switch breaker drive circuit (2b), etc.

The signal processing unit (2a) includes demodulation means for receiving and demodulating the control signal superimposed on the power line (3), and modulation means for superimposing the return signal to the transmitter (1) as a carrier wave signal on the power line (3). , when the address data of the control signal demodulated by the demodulating means and the address data of the control signal demodulated by the demodulating means are compared with a preset own address and they match; It is equipped with a control determination means that receives control data into the output port and generates a control output from the output port based on the control data, and if the received control data is ON data, the oscillator output port If it is off data, an off signal of Hu level is generated from the oscillator output port OFF. A
If it is an on signal, it turns on a switching means (not shown) provided in place of the control switch 5w0a in the circuit of FIG. 1, and if it is an off signal, A switching means provided in place of the control switch bQ of the control switch SW in the circuit is turned on to control the direction of the excitation current flowing through the excitation coil L1 built in the remote control breaker BR. Operation discrimination circuit (
6) is a NOR gate N to which the ON signal and OFF signal are input.
OR, and the main contact r of the amplifier BR. A resistor R4 is connected to the power supply element X9 via an auxiliary contact r1 that turns on and off in conjunction with turning on and off, and the voltage across the resistor R4 is directly input to one input terminal, and the other input terminal is connected to the resistor R4. an exclusive OR gate FOR which is inputted via a delay circuit consisting of resistors R2 and R3 and a capacitor C1, an AND gate AND3 which takes the logical product of the output of the NOR gate NOR and the gate output of the exclusive OR gate EOH, and An R-S flip-flop FF inputs the output of the gate AND to the set terminal S, and a power supply +VD is connected to the resistor R1 at the time of oscillation.
D voltage is applied and the voltage is R-S flipped.
Reset switch SWl applied to reset terminal R of F
The voltage signal across the resistor R4 is input to the monitoring input terminal i of the signal processing section (2a) of the receiver (2), and the output of the exclusive OR gate EOR is input to the signal processing section (2a). The strobe pulse is applied to the strobe signal input terminal ST, and the Q output of the R-S flip-flop FF is applied as the input input to the AND gates AND, AND2.

Now, when a control signal with ON control data is transmitted from the transmitter +1 via the power line (3), the receiver (2) takes in this ON control data when its own address and address data match. , an on signal is generated from the off output port ON as shown in FIG. 5(a). On the other hand, since the R-S flip-flop FF that makes up the latch circuit is not set, the Q output is at the "H" level, so the AND gate AND sends the above ON signal to the remote control breaker drive circuit (2b). Then, the excitation current is applied to the excitation coil L1 of the conduit breaker BH using the beam of the condenser breaker drive circuit (2b) so that the main contact r is turned on, thereby driving the conduit breaker BR. By the generation of the signal, the gate 1-
The output changes from the ``H'' level to the ``L'' level in Figure 5 (c
). On the other hand, when the main contact ro of the breaker BR turns on, the auxiliary contact r'1
is turned on as shown in FIG. 5(a), and a voltage is generated across the resistor R4. This voltage signal is input to the monitoring input terminal 1, / of the signal processing section (2a) of the receiver (2). Also, with the rise change of this voltage signal, an exclusive OR gate FOR
As shown in FIG. 5(e), a pulse signal is generated from the output terminal of the signal processing section (2a), and this pulse signal is inputted to the signal processing section (2a) as a strike pulse of the signal processing section (2a). Therefore, the signal processing unit (2a) transmits the strobe pulse as a strobe pulse, and sends the data that the monitoring input terminal i becomes "H", that is, the information that the remote control breaker BR is turned on, as a return signal to the transmitter (1). Now, the timing of the pulse output of the exclusive OR gate FOR is no good)N
Since the output of OR is at t'' level, AND gate A
The output of N I)3 is ゝゝL t as shown in Fig. 5(f).
It remains at the r level and the R-S flip-flop FF is not set.

FIG. 5(b) shows the off signal output from the off output port OFF of the signal processing section (2a) of the receiver (2) when transmitter +1+ sends off control data. When the combiner breaker BR turns off,
The auxiliary contact r1 is turned off, and when this is turned off, a pulse signal is output from the exclusive OR gate EOR at the timing of the fall of the voltage of the resistor R6, as described above, but the R-S flip-flop FF is not set.

Further, when the pulse signal is generated, the signal processing section (2a) of the receiver (2) sends data that the monitoring input terminal i has become "L" level, that is, information that the t combiner breaker BR has been turned off, to the transmitter. It is sent back to (1).

Now, at time t1, the main contact opening/closing mechanism is turned on by operation 1/par (5) on the remote control breaker BR side, and the main contact r is turned on. When the resistor R4 turns off, the output of the NOR gate NOH does not change at all, but the auxiliary contact r' turns on as shown in FIG. 5(d), and a voltage is generated on both sides of the resistor R4. Therefore, at this generation timing, a pulse signal is generated from the exclusive OR gate EOR, and the signal processing section (2a) of the receiver (2), which uses this pulse signal '+i' as a stroke pulse, is connected to the seven combiner breaker as described above. The data that the BR turned on is returned as a return signal. On the other hand, since the output of the NOR gate NOH is at the "H" level, the pulse signal output from the exclusive OR gate FOR passes through the AND3 as shown in FIG.
As shown in F), it is input to the set terminal S of the R-S flip-flop FF. Therefore, R-S flip-flop Dtsu''jF
F is inverted to invert the Q output as shown in FIG. 5(g). Therefore, from then on, the AND gate AND,,AND
Since one input of 2 is at the LL level, the ON signal and OFF signal from the signal processing section (2a) of the receiver (2) cannot pass through the AND gates A N Dl and A N D2. In other words, remote control using the transmitter (l) is prohibited. This prohibited state can be canceled by turning on the reset switch SW. In other words, if the reset switch SW is turned on as shown in Fig. 5 (h), , the reset terminal R of the R-S flip-flop FF is reset by applying a "H" level signal, and the Q output changes from "L" level to X as shown in FIG. 5(g).
At the point L2 in Figure 5, when the state returns to the VH'' level, the main contact opening/closing mechanism is driven by the operating lever (5) (or tripped by the overcurrent detection mechanism) and the timing is set to turn off the main contact rQ. In this case, the exclusive OR gate EO is input from the AND gate AND3 as in the ON operation described above.
The pulse signal from R is input to the set terminal of the R-S flip-flop FF, sets the R-S flip-flop FF, and remote control by the transmitter (1) is prohibited.

The transmitter (1) is equipped with an IM signal processing section similar to the receiver (2) that receives the return signal from the receiver (2) and transmits a control signal, and transmits seven signals based on the data of the return signal. The operating status of the breaker BR is displayed.

FIG. 6 shows another embodiment of the present invention, in which the receiver (2) sends information indicating that it has been operated on the BR side, and responds to this return signal. Based on this, the transmitter (1) side is configured to be unable to transmit.

On the terminal circuit side, the pulse signal of the exclusive OR gate EOR of the operation determination circuit (6) in the embodiment of FIG. 4 is sent to the signal processing unit (2a) of the receiver (2) via the OR gate OR.
It is designed to be input to the stoop signal input terminal ST of the sto-o-p signal. One inputs the voltage signal of the resistor R6 to the monitoring input terminal 11 of the signal processing section (2a) of the receiver (2), and inputs the Q output of the R-S flip-flop FF to the other monitoring input terminal 12. That's how it is.

Furthermore, the voltage across the resistor R1 is connected to an exclusive OR gate EOR via a delay circuit consisting of a capacitor C2 and resistors R5 and R8.
0 input to one input terminal, and directly input to the other input terminal. Also, in the receiver (2), the AND gates AND, , AND2 are eliminated. On the other hand, on the opposite side of the transmitter, a power supply VDD is connected to the ON operation signal input terminal ONo of the signal processing section (1a) of the transmitter (1) via an AND gate A N D and an ON operation switch SWa. , AND gate A to the OFF operation signal input terminal 0FFo
The output port O of the signal processing section (1a) is connected to the other input terminal of each AND gate AND5 via the OFF operation switch SWb.
It is connected via N.

Next, to explain the operation of this embodiment, in the operation from the transmitter +1+ side, when the ON operation switch SWa or the OFF operation switch SWb is turned on, in the normal state where the output port O is at the "L" level, the acid gate AND4 , or ON or OFF operation signal input terminal via AND5
. Or, a signal of "H" level is input to 0FFo, and based on this input, the transmitter (1) creates a predetermined control signal including on or off control data and sends it to the power line (3) as a carrier wave.
It is superimposed on the

On the receiver (2) side, a seven-contact breaker drive circuit (2b) is controlled in the same manner as in the embodiment shown in FIG.
It turns on or off the j recorder BR. In this case, the auxiliary contact
Since the pulse signal from the exclusive OR gate FOR generated by the on or off operation of '1 is output, the R-S flip-flop FF is not set and the Q output does not change.

Therefore, the signal processing unit (2a) of the receiver (2) returns information indicating that the state of the remote controller BR is on or off based on the input data of the monitoring input terminal 1 to the transmitter (1). Since the input data at the monitoring input terminal 12 does not change, the breaker BR increases, T] shift force B
Information indicating that the R side has not been operated is returned.Next, when the combiner breaker BR is operated by the operation lever (5) of the combiner breaker BR (or tripped by the overcurrent detection mechanism), Since the output of NOR gate N)H is at "H" level, exclusive OR gate EOR
A pulse signal output from the RS is inputted to the pit terminal S of the R-S flip flop FF via the AND gate AND3, and sets the R-S flip flop 5FF. Therefore, the Q output is inverted, and this inverted signal is input to the monitoring input terminal 12 of the signal processing section (2a). Therefore, the receiver (
The information returned from the signal processing unit (2a) in step 2) is operation information of the breaker BR, and information about the operation on the breaker BR side. In the signal processing section (la) of the transmitter 0+, the receiver (2)
Detects that the input data at the monitoring input terminal 1□0 of the signal processing unit (2a) has changed, and based on this detection, output port 0
A signal of ``H'' level is output from the AND gate AN.
The outputs of D, , AND5 are fixed at the Ltr level, and input signals from the on/off operation switches SWa and swb will no longer be accepted. Therefore, the operation of the transmitter (lρ) etc. is prohibited. To release this state, it is only necessary to turn on the reset switch SW of the operation determination circuit (6). In this case, when the reset switch SW is turned on, R -S Flip Flora FF glue pit terminal R to 1
A “H” level signal is input, a reset is applied, and R-
The S flip FF inverts the Q output. Also, when the above-mentioned "H" level signal rises, the exclusive OR gate E
A pulse signal is generated from ORo and input to the strobe signal input terminal ST of the signal processing section (2) via the OR gate OR. This input causes the signal processing unit 4) to control the monitoring input terminal 1□
When the input data of the input data changes, the operation determination circuit (6
) is reset together with data on the operating state of the converter breaker BH. The signal processing unit (1a) of the transmitter (1) that received the return signal from O changes the output of the output port O from the ``H'' level to the ``L' level, and outputs the output via AND5. This makes it possible to take in the operation signals of the on-operation switch SWa and the off-operation switch SWb.

The 7th bad is + ke 0 bright dish example circuit, 7+
``7)'' The example is a combination of Kurusesa 1j shown in Figure 4 and Gyorokumi Shio I shown in Figure 6.
In the event of a crisis in country R, control from the transmitter t1+ is removed from the transmitter t1+ at 1d, t2+, and 11t11, and the transmitter (
1) But control # signal? The cutting of each part is the same as the embodiment shown in Figure 6.
When a masterpiece was created with the controller B Rjtll, the transmitter f
As a way to correct remote control from i+, use the fountain circuit 1111'', excitation T & coil L1 of the breaker BR.
How to turn it off with a model cut-off power supply t relay, or a similar way to turn it off with a transmitter +
There is a method of prohibiting transmission by software processing in l1illllJ, and a method of prohibiting transmission by the tdem part of the signal processing unit (a) of the shunted transmitter ill. Also, these dimensions may be combined, or other methods other than these may be used as appropriate. It goes without saying that you can use it.

- Also, as for the above Takiroki line carrier signal format, see Fig. 8(a).
As shown in the figure, the starter signal STR, address data AD, control (return) data CD,
As shown in figure (b), is there a half cycle of the interspersed waves? 1 mL, and then divide this half cycle into 4 equal sections to give 1 ml? For example, the start signal is sent to the second ward, and the 46th ward is sent a special wave, giving a code of ``0101'', and the data is recorded as ``O''. The carrier wave r comes to the second section and gives the code '0100'', and then the data is added.Then, the carrier wave is added to the second to fourth sections and the code '0111'' is given, and these data 20", '1" address data AD, control a (return) data C
D is created. Figure 8 (C1 is the letter of the letter (1)
, to obtain the same jUJ k of the transmitter t21 [■Zero cross detection pulse of the streetcar U frequency? show. It may also be possible to use a power transmission system other than the above-mentioned signal format, or a time division multiplex transmission system on the remote device side.

〔Effect of the invention〕

As mentioned above, the present invention is applicable to the fecal examination of the hand stamp operation means of the hand stamp operation means and the above-mentioned abnormality. Enclosing the main contact?
4) At the time of evening detection, the remote control circuit consisting of a communication device is operated by the remote control circuit 1', which generates a signal to stop the signal.
Manual UJ operation with remote control breaker ##;;1111,
When abnormal fermentation is detected, the control signal from the transmitter is used to turn on the breaker from the remote control. Is it the effect that totality is weak? play.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of the basic usage example using a beam seven-contact breaker r, Fig. 2 is a circuit block diagram of a conventional example, Fig. 3 is a basic circuit block diagram of an embodiment of the present invention, and @Fig. The same salary uV6 diagram as above, Figure 5 is Time Chisade for explaining Kaizen's previous work,
FIG. 6 is a circuit block diagram of another embodiment of the present invention, FIG. 7 is a circuit block diagram of an embodiment of the shade of the present invention, and FIG. This is an explanatory diagram of the bond type.TBR beam seven combiners, (1) is the transmitter, (2) is the receiver, (3) is the power line, (5) is the masterpiece lever, (6)
(ib) is a relay drive circuit. Agent Patent Attorney Shi 1) Seven-procedure amendment (spontaneous)], Indication of gravity 1982 Patent No. 1068'77 U2, Title of invention Terminal circuit of remote control system 3 Arrest Relationship with the patent case Patent applicant address 1048 Kadoma, Kadoma City, Osaka Prefecture Name (
583) Matsushita Electric Works Co., Ltd. Company 0 Representative Iku Kobayashi 4 Agent 5 Date of amendment order 6 Number of inventions to be increased by amendment Letter of correction Patent Application No. 1988-106897 1 Specification of the present application, page 11 Correct the entire text of the 4th line as follows. [For example, when the power is turned on, the 70 knob FF is reset by some appropriate reset means and outputs Φ] Agent Patent Attorney Ishi 1) Ai Shichi

Claims (1)

[Claims] A control signal is transmitted from the fi+ transmitter to the receiver via a transmission path, and the receiver turns on or off the control load based on the control signal, and also transmits operation information of the control load from the receiver. In the remote control system that sends the data back to the transmitter, the main contact ← is opened and closed by manual operation means such as a control lever, and
When an abnormality such as excessive current or overcurrent is detected, the main contact is opened.
In addition, a remote control breaker with an opening/closing means for opening and closing the main contact according to the excitation direction during excitation of the excitation coil is provided as a control load, and when a control signal for oscillation is transmitted from the transmitter, the main contact closes the excitation coil. a receiver having an excitation coil drive means for exciting the excitation coil so that the main contact is opened when an off control signal is transmitted from the transmitter; and a remote control breaker. It is equipped with an operation discrimination circuit that detects the opening and closing of the main contact when operating the operating means or when the above-mentioned abnormality is detected, and generates a detection output that completely prohibits the operation by a remote control system consisting of a transmitter and a receiver at the time of such detection. A terminal circuit for a remote control system, characterized in that it fits within the terminal circuit. (2) The terminal circuit for a remote control system according to claim 1, wherein the operation of the drive means of the receiver is inhibited based on the detection output of the operation discrimination circuit. (3) The detection output of the operation determination circuit is given to a receiver as operation information of the control load, and the receiver sends it back to the transmitter as data prohibiting the operation of the transmitter. Terminal circuit of the remote control system according to item 1 or 2.