JPS6343518A - Apparatus for responding abnormality - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] Industrial Fields of Use The present invention is applicable to abnormality response for products in all fields where it is necessary to notify the abnormal state when an abnormal state occurs while driving a load. It is related to the device.

2. Description of the Related Art Conventionally, this type of abnormality handling device has had a configuration as shown in FIG. In FIG. 4, 1 is an AC N'SA, and this AC power supply 1 is connected to the primary side of a transformer 2. The low voltage alternating current obtained from the secondary side of the transformer 2 is rectified using the stack 3, and then the 3-terminal regulator 4
A DC power supply smoothed by capacitors 5 and 6 is connected to the microcomputer 7. Also, microcomputer 7
The output from the output port OUT of the transistor 9
The triac 8 is brought into conduction via the AC power source 1, and the AC power source 1 is supplied to the load 10. B depending on the condition of the load 10
Alarm output is output from the Z boat and LED port,
The buzzer 11 sounds and the LED 12 lights up. 14 is an oscillator, and capacitor 1
5.16 to perform reference oscillation for the microcomputer 7.

Problems to be Solved by the Invention In such a conventional configuration, when an abnormality occurs in the state of the load 10, an alarm and display are only provided by the buzzer 11, LED 12, etc. If the abnormality is due to a short circuit between 1 and 8, and the failure mode is accompanied by a high temperature condition in load 10, load 10 is still in a dangerous state even though an abnormality alarm is in effect. will be allowed to continue. Therefore, there was a problem in that if the response of the surrounding people was delayed, it could easily lead to a fire or the like.

The present invention solves these problems.

When an abnormality occurs in the load, etc., the purpose is to remove the dangerous condition and notify the user of the analysis results of the failure mode.

Means for Solving the Problem In order to solve this problem, the present invention provides a power supply control section for cutting off the power supply to the control section, etc., and a memory that can retain memory even when the power supply is cut off. and a timer section for controlling the abnormality notification time, and the control section:
When an abnormality occurs in the load section, the abnormality detection signal of the abnormal state detection section is controlled to be communicated to the abnormal state type determination section, and the output data of the abnormal state type determination section is stored in the storage section. At the same time, the notification and display unit outputs an abnormal state for a certain period of time obtained by the timer unit, and then outputs a power cutoff control signal to the power supply control unit to cut off power supply from the power supply unit to the load unit. It was created to do so.

With this configuration, when an abnormal condition occurs in the load section, etc., the type of abnormal condition is stored in the storage section, and after the abnormality is notified for a certain period of time given by the timer section, the power supply control section returns the control section, etc. By cutting off the power supply to the machine and notifying the abnormal state stored in the memory unit again when the user forces the power supply again, it is possible to prevent the dangerous state from continuing when an abnormality occurs. Become.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3. Note that the same members as in the conventional device shown in FIG. 4 are given the same reference numerals.

FIG. 1 is a block diagram showing an overview of the present invention. The power supply section is connected to the load section via the power supply control section.

A control section is connected to the power supply control section, and a timer section, a storage section, a notification and display section, an abnormal state type discrimination section, and an abnormal state detection section are connected to the control section. An abnormal state detecting section is connected to the load section, and an abnormal state type determining section is connected to the abnormal state detecting section.

``The control section outputs a power supply control signal to the load section to the power supply control section. Further, the control section stores the signal from the abnormal state type discrimination section in the storage section, operates the timer section to operate the alarm and display section for a certain period of time, and further causes the power supply control section to supply power to the load section after a predetermined period of time. Gives a signal to cut off the supply.

FIG. 2 is a circuit diagram of one embodiment of the present invention. Reference numeral 19 denotes a manually activated 0N10FF flip-type switch, which is connected in parallel to the relay contact 20 between the power source 1 and the primary side of the transformer 2. 17 is relay contact 2
This is a relay coil for controlling 0, and is driven by a transistor 18. Reference numeral 21 indicates an IC for storing an abnormal state, and various backup power sources such as a large-capacity power source can be considered depending on the type of IC. Also IC
+ (7) automatically enters the reset release state when the supplied DC voltage level exceeds a certain value, and the IC
1 (7) According to the internal memory built into the main body, the amount of input from the outside is added, output to the outside, etc. are performed.

To explain the operation in the above configuration, when the user uses the main body, the manual rebound switch 19 is opened by the user, so current flows through the transformer 2, and as a result, DC current flows through the IC+ (7) etc. will be supplied. Next, when the reset state of IC+ (7) is released, a signal for energizing relay coil 17 is output from output port 0UTI of IC+ (7) via transistor 18, and relay contact 20 is closed. Therefore, even if the contact of the 19 rebound type switches is opened, power will continue to be supplied to IC+ (7) and the like.

Next, the operation when an abnormality occurs in the load 10 while the IC+ (7) receives various external inputs and outputs the output to the load 10 will be described. For example, load 10
Assuming that is a heater, a signal for flowing current through transistor 9 to the gate of triac 8 is sent to IC+
While outputting from output port 0tJT2 in (7), if triac 8 is △! , .DELTA.2 is short-circuited, the heater 10 is continuously energized, and the surrounding temperature rises abnormally. In this case, IC+ (7
> is sent to the input boat IN1, and therefore,
The abnormal state is notified to the user using the buzzer 11 and the LED 12, and the power supply to the relay coil 17 is cut off after a certain period of time after the abnormality occurs. As a result, the relay contact 20 becomes open, and the IC
+ Power supply to (7), the load 10, etc. is stopped, and an abnormal temperature rise of the heater, etc. can be prevented. Note that the reason for setting a certain time delay before the power turns off is to assume that the user is near the main unit. This is because it is thought that it is possible to take measures such as turning off the power supply, main valve, etc.

However, if the user is not nearby, there is no point in reporting an abnormality for a long time, and if the triac 8 is short-circuited, there is a risk of fire or the like. For this reason, the relay contact 20 is turned off after the abnormality is reported for a certain period of time, for example, about 10 minutes. However, in this case, the user must press switch 19 to power on the main unit.
When the contact is closed, immediately after power is supplied to IC2 by a signal from the storage unit that records the type of abnormal state, etc. at the time of abnormality occurrence, the abnormal state that occurred before the power was turned off is detected. Since the notification is made via the D12 and the buzzer 11, the user can determine whether there is an abnormality and its type even if he or she is away from the main body when an abnormality occurs.

FIG. 3 is an applied example of the embodiment shown in FIG.

A relay contact 23 is provided on the triac 8 and serial for driving the load 10, and an output port for relay coil control is added as 0LIT4 in addition to 0IJT1. Furthermore, 0UT4 is added as an output port for controlling the load 26, and is connected to the base of the switching transistor 25. The load 26 is connected to the AC power supply 26 via the triac 24, and the gate 14 of the triac 24 is connected to the collector of the transistor 25.

In this case, two loads, load 10 and load 26, are assumed, but if load 10 becomes abnormal, the relay contact will be activated by the output from output port 0UT4 of IC+ (7). 23 is opened to interrupt the power supply to the load 10, and it is considered that there is no danger even if the power supply to the IC 1 (7) and the like continues.

On the other hand, if an abnormal condition occurs in the load 26, the relay contact 20 is opened to cut off the power supply to the main body. By doing this, the response of the main unit can be changed depending on the type of abnormality that has occurred, so for example,
If an abnormality that can be adjusted by the user occurs while the main unit is in progress, after the user corrects the malfunction,
It becomes possible to open the relay contact 23 again and resume from where it left off.

In addition, in each of the above embodiments, an example was shown in which a relay was used to configure the power supply contact, but the contact part may also be a reed switch or a triac. Furthermore, the memory device does not necessarily need to use an IC, and may be configured to cut off a specific fuse in the event of an abnormality, and then determine whether there is an abnormality based on information on whether the fuse has been cut or not when the power is turned on again. In short, even if the power supply to the main body is cut off, it is sufficient that the abnormal state can be memorized or determined in some way.

Effects of the Invention As is clear from the above embodiments, the abnormality response device of the present invention cuts off the power supply to the main body after notifying the abnormal state for a certain period of time when an abnormality occurs, and then restarts the power supply. By re-notifying the abnormal condition when the device is turned on, the dangerous condition will not persist even if the user is away from the device, and the user can confirm the type of abnormal condition, etc. It is possible to improve safety and appropriately respond to user failure modes.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an overview of an embodiment of the present invention, FIG. 2 is a diagram showing an embodiment of the present invention, FIG. 3 is a diagram showing an embodiment to which the present invention is applied, and FIG. FIG. 4 is a diagram showing an example of a conventional abnormality handling device. 7...Microcomputer (Ice) 17...Relay coil 19...Manual bounce switch 20...
・Relay contact 21... ffl device Patent applicant Matsushita Electric Industrial Co., Ltd. Figure 1 Figure 2 A3 Figure 16- and 115: 1 +FF yh Fourth factor

Claims (2)

[Claims] (1) A power supply unit, a power supply control unit equipped with a switch that can manually forcibly cut off and supply power from this power supply unit, and a load to which power is supplied from the power supply unit through this power supply control unit and a control unit including a timer unit, a storage unit, a notification and display unit, an abnormal state detection unit for the load unit, and an abnormal state type determination unit, wherein the control unit detects the abnormality when an abnormality occurs in the load unit. The abnormality detection signal of the state detection section is controlled to be communicated to the abnormal state type judgment section, the output data of the abnormal state type judgment section is stored in the storage section, and the notification is made for a certain period of time obtained by the timer section. and a display unit outputs an abnormal state, and then outputs a power cutoff control signal to the power supply control unit to cut off power supply from the power supply unit to the load unit. Device. (2) If the control unit is manually forced into the power supply state after the power supply control unit enters the power cutoff state due to the occurrence of an abnormal state in the load, the control unit immediately stores the power supply in the storage unit. The abnormality handling device according to claim 1, wherein the abnormality handling device is configured to output the stored abnormality state contents to the notification and display section.