JPS636613A - Power supply application system - Google Patents

Abstract

PURPOSE:To eliminate the rise preventing factors by securing the response of a power supply application control part for device to be controlled to the application end signal sent from a signal generating part of the device to be controlled. CONSTITUTION:A controller 1 contains a CPU 2A forming a power supply application control part 2, an output part 2B and an input part 2C and delivers output signals (a)-(d) to control an electromagnetic switch 4B for a device 3 to be controlled, an alarm part 10 and an automatic informing device 11. The device 11 is connected to a monitor center 13 via a communication circuit 12. The device 3 includes a power supply part 4C, a CPU 5A forming a signal generating part 5, and an output part 5B. Then a power supply 4A of the device 3 is applied under the control of the part 2. While an application end signal is produced from the part 5 in response to the rise of a program. As a result, the part 2 decides the normal working of the device 3 from a fact that said application end signals sent back within a prescribed time.

Description

[Detailed Description of the Invention] [Summary] In response to the completion of program startup of the controlled device, a closing completion signal is returned to the control device, and if the loading completion signal is not returned within a predetermined time, the controlled device By repeating power-on of the device a predetermined number of times, reliability of power supply for starting normal operation of the controlled device is obtained, and factors that inhibit startup caused by power-on of the controlled device are eliminated as much as possible.

[Industrial application field]

The present invention relates to a power-on system, and more specifically, to a power-on system configured to determine completion of power-on by starting a program.

In unmanned stores, etc., the power to the program-controlled controlled devices is turned on several tens of minutes to several minutes before the store's opening time under the control of the program-controlled control device, and the store's operations begin at the opening time. I try to do that. In such a case, power-on is particularly required to be reliable due to the system configuration.

[Conventional technology]

An example of the configuration of a system for powering on a controlled device in the above-mentioned industrial field is as shown in FIG. Under the control of the CPU 32 of the control device 30, a power-on signal 36 is applied from the output section 34 to the electromagnetic switch 40 for the controlled device 38 to operate it. As a result, when the main contact of the electromagnetic switch 40 is closed, power is supplied from the power source 42 to the power source section 44 of the controlled device 38, and the controlled device 38 is operated.

In such a system, the following technique has been conventionally used as a means for monitoring whether the power to the controlled device 38 has been turned on normally. One of them is an auxiliary contact 40 that opens and closes in conjunction with the main contact of the electromagnetic switch 40.
In one method, the open/closed state of A is inputted into the input section 46 to make a decision, and in the other one, the secondary side output voltage value of the power supply section 44 is inputted from the voltage monitoring circuit 48 to the input section 46 to make a decision. be.

[Problem that the invention seeks to solve]

With such a technique, there is a risk that a misjudgment factor may be involved in determining that power supply for starting normal operation of the controlled device 38 can be performed.

That is, in the former case, the opening and closing of the auxiliary contact 40A does not reliably reflect the actual power supply to the controlled device 38, and in the latter case, the secondary output voltage of the power supply section 44 is not normal. Even if the program-controlled controlled device 3
This is because, due to the nature of 8, it does not always stand up normally.

Furthermore, in the conventional technique, if the program goes out of control due to noise or the like when the power is turned on, it is essential to intervene with means for restoring the program to normality, such as a watchdog reset.

The present invention was created in view of such problems, and is a power source that ensures power supply to the controlled device to enable normal operation and eliminates as much as possible the factors that inhibit startup caused by turning on the power. The purpose is to provide an input system.

[Means for solving problems]

FIG. 1 shows a block diagram of the principle of the present invention. As shown in this figure, the present invention enables a power-on control section 2 of a control device 1 that performs immersion control of a power source 4 of a controlled device 3 to be turned on by a signal generating section 5 provided in a controlled device 3. It is configured to respond to a completion signal.

[For production]

The power source 4 of the controlled device 3 is turned on under the control of the power-on control section 2 of the control device 1 . When the power is turned on, the program of the controlled device 3 is started up, and in response, the signal generation section 5 generates a power-on completion signal. The input control section 2 that responds to this input completion signal takes appropriate measures. For example, if the immersion completion signal is returned within a predetermined time, it is determined that power has been supplied that can start normal operation of the controlled device 3, and in the opposite case, such power supply is Take appropriate measures. For example, the above-mentioned procedure may be made to perform the power supply function a predetermined number of times.

As described above, by making the power supply control to the controlled device 3 related to the start-up of its program, the problems existing in the conventional technique can be solved.

〔Example〕

FIG. 2 shows an embodiment of the invention. In this figure, 1
is a control device, and this control device 1 includes a CPU 2A and an output section 2 as necessary components in connection with the present invention.
B and an input section 2C, which constitute the input control section 2 in FIG. Signals a, b, and d are output from the output section 2B, and signal a.

b is supplied to the electromagnetic switch 4B for the controlled device 3,
Further, the signal d is supplied to the alarm section IO and the automatic notification device 11. The automatic notification device 11 is connected to a monitoring center 13 via a communication line 12.

In addition, the controlled device 3 has a power supply unit 4C, a CPU 5A, and an output unit 5B that are necessary in connection with the present invention, and a C
The PU 5A and the output section 5C constitute the signal generating section 5 shown in FIG. Power supply section 4C1 electromagnetic switch 4B and power supply 4C are the first
This corresponds to power supply 4 in the figure.

The operation of the system of the present invention having the above configuration will be explained below.

Under the control of the CPU 2A of the control device 1, a signal a (power-on signal) ((A) in FIG. 3) is supplied from the output section 2B to the electromagnetic switch 4B to turn on the electromagnetic switch 4B.
A supply voltage ((B) in FIG. 3) is supplied to the terminal. and,
The operation of the CPU 5A is started, and the initialization of each part of the device is completed (
When the start-up of the program is completed), data is set in the output section 5B by the program and the signal C ((
C)) is sent to the input section 2C.

When this signal C is received by the input unit 2C within the waiting time T1 preset for the controlled device 3, the CPU 2A
It is determined that power has been supplied to start normal operation of the controlled device 3.

However, if the signal C is not returned even after the waiting time T, the CPU 2C sends a disconnection signal b ((E) in FIG. 3) from the output section 2B to the electromagnetic switch 4B to control the controlled device. 3 After stopping the power supply to each part ((F) in Figure 3),
When the waiting time T2 has elapsed, a power-on signal a is sent to the electromagnetic switch 4B to turn it on. The waiting time T2 is a time set in the controlled device 3 as the time required to clear the voltage of each part of the device.

If the above-mentioned signal C is returned before such turning on/off reaches a predetermined number of times, the CPU 2A determines that the above-mentioned normal power supply has been carried out.

However, even if the number of times of turning on and off reaches a predetermined number ((H) to (J) in Figure 3), if signal C is not returned, the CP
U2A generates a power-on abnormality signal d ((K) in FIG. 3) from output section 2B, and generates an abnormality display or alarm sound from alarm section 10. Further, by inputting the signal d to the automatic notification device 11, it is possible to enable the monitoring center 13 to recognize an abnormality in power-on.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to reliably supply power for starting normal operation of a controlled device.

In addition, it is possible to eliminate as much as possible the start-up inhibiting factors caused by turning on the power.

[Brief explanation of the drawing]

Fig. 1 is a principle block diagram of the present invention, Fig. 2 is a diagram showing an embodiment of the present invention, Fig. 3 is a timing chart for explaining the embodiment of Fig. 2, and Fig. 4 is an example of a conventional system. . In Figures 1 and 2, ① is a control device, 2 is a power-on control unit, and 2 is a CPU. 2B is an output section, 2C is an input section, 3 is a controlled device, 4 is a power supply, 4A is a main power supply, 4B is an electromagnetic switch, 4C is a power supply section, 5 is a signal generation section, and 5A is a CPU. 5B is an output section. 711-The Principle of Suimei Arotsukku Diagram 1 Figure 41 Example of Ichimo-kata in the Moonlight Figure 2

Claims (2)

[Claims] (1) In a system in which the power-on control unit (2) of the control device (1) controls the power-on of the power (4) of the controlled device (3), in response to the completion of program start-up of the controlled device (3). A signal generating section (5) capable of generating a power-on completion signal to the control device (1) is provided in the controlled device (3), and the power-on control section (2) is configured to be able to respond to the power-on completion signal. A power-on system characterized by comprising: (2) The power-on control unit (2) is configured to repeat power-on and disconnection, including initial power-on, a predetermined number of times in response to not receiving the power-on completion signal within a predetermined time. A power-on system according to claim 1.