JPH0935156A - Stand-by power supply testing device for fire monitor and control board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely prevent a stand-by power supply test from being executed over necessary time by forcedly ending the test after the lapse of a prescribed time from the ON of a stand-by power supply test switch in the case of executing a test by connecting a dummy load to a stand-by power supply. SOLUTION: When the ON operation of the stand-by power supply test switch 25 is detected, a power supply switching signal is outputted from an MPU 6 to a power supply switching circuit 16 to prepare an artificial AC 100V service interruption state, a test signal E3 is outputted to a stand-by power supply testing circuit 32, a dummy resistor R 16 is connected to the output of a boosting circuit 21, and a load current for testing a stand-by power supply is allowed to flow by connecting the artifical load. The output voltage of a battery 20 being tested based upon the operation of the circuit 32 is inputted to the MPU 6 and whether the output voltage is within a regulated voltage range or not is judged. At the time of detecting the ON of the switch 25, a stand-by power supply test controlling part 27 starts a timer 34, and after the lapse of prescribed time for determining the test enabled time of a stand-by power supply test, forcedly ends the stand-by power supply test.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a standby power supply test device for a fire monitoring control panel for testing whether or not the standby power supply normally functions, and more particularly to a standby power supply while operating a standby power supply test switch. The present invention relates to a standby power supply test device for a fire monitoring and control panel that performs a test.

[0002]

2. Description of the Related Art Conventionally, in a disaster prevention monitoring system using a fire monitoring control panel (receiver) that receives a detection signal from a fire detector to warn of a fire, the power source of the receiver that operates from a commercial power source is used. The circuit is equipped with a backup power source that uses a battery to back up when the commercial AC power source fails.

In a normal monitoring state, the battery as a standby power source is charged with a DC voltage obtained by rectifying and smoothing a commercial AC power source, but during long-term use, the battery is charged. Since there is a risk of an abnormality in which the charge capacity is insufficient due to deterioration of the battery or the like, the standby power supply can be tested regularly and as needed. The standby power supply test can be performed by operating the standby power supply test switch provided in the fire monitoring control panel.For example, when a push button type non-lock switch is used for the standby power supply test switch,
While pressing the switch, perform a preliminary power supply test,
The standby power supply test is completed when the switch is released and turned off.

During the standby power supply test while operating the standby power supply test switch, the supply of the direct current power source based on the commercial AC power source is switched to the supply of the standby power source, and at the same time, a dummy resistor for discharging is connected to the standby power source to cause a fire. The same current consumption as during the reception operation by reception is passed to discharge the battery. In this state, the supply voltage of the standby power supply is determined, and normality, abnormality, insufficient remaining battery level, etc. are determined and the result is displayed.

[0005]

However, in such a conventional backup power supply test apparatus for a fire monitoring and control panel, the test is continued while the standby power supply test switch is pressed. There is a possibility that the test may be performed for a long time due to a failure of the test switch, mischief, or the like, and there is a possibility that the dummy resistor for discharging may cause abnormal heat generation.

It is an object of the present invention to provide a standby power supply test device for a fire monitoring and control panel that surely prevents a standby power supply test exceeding a required time and improves reliability.

[0007]

To achieve this object, the present invention is constructed as follows. First, the present invention switches the supply of the DC power supply voltage based on the commercial AC power supply to the supply of the DC power supply voltage by the backup power supply while operating the backup power supply test switch, and connects a dummy load to the backup power supply for testing. A standby power supply control unit for the standby power supply test device of the fire monitoring and control panel that forcibly terminates the standby power supply test when a certain time has elapsed after detecting the ON of the standby power supply test switch Is characterized by.

Therefore, even if the standby power supply test switch is kept on for a time longer than the time required for the test due to a failure or the like, the standby power supply is forcibly forced after a preset time, for example, 10 minutes. After the test is completed, it is possible to prevent the consumption of the burley and the abnormal heat generation of the dummy resistor for discharging. In addition, the standby power supply test control unit outputs an audible alarm when a predetermined time has elapsed after detecting the ON of the standby power supply test switch. As a result, the operator knows the standby power supply test and the abnormality of the switch, and takes appropriate action. In the case of mischief, an alarm sound can be used to call attention.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory diagram of a fire alarm system equipped with a fire monitoring control panel to which the standby power source test source device of the present invention is applied. In FIG. 1, from the fire monitoring and control panel 1, sensor lines 2-1 to 2- that function as power source / signal lines
n is drawn. A plurality of fire detectors 3 are connected to each of the detector lines 2-1 to 2-n, and a termination resistor 4 for detecting disconnection is further connected to the end.

The fire monitoring and control panel 1 has sensor lines 2-1 to 2-1.
Receiving circuits 5-1 to 5-n are provided corresponding to 2-n. The receiving circuits 5-1 to 5-n are connected to the sensor lines 2-1 to 2-1.
The fire detector 3 connected to 2-n detects a fire and detects an increase in current flowing by short-circuiting the lines to a low impedance, and outputs a fire reception signal. Each of the reception circuits 5-1 to 5-n is connected to the MPU 6 which constitutes a reception control unit.

For the MPU 6, an operation unit 7, a display unit 8, a main audio device 9, a district audio control unit 10, and a transfer unit 3 are further provided.
1 is connected. A bell line 11 is drawn out from the district sound control unit 10, and a bell 12 is connected to the bell line 11. When the MPU 6 receives a fire reception signal from any of the receiving circuits 5-1 to 5-n and determines that a fire has occurred, it displays a representative fire on the display unit 8 and detects that the fire detector 3 that has detected the fire is connected. Fire area display showing the equipment line.

At the same time, the main acoustic device 9 is driven to issue a fire alarm. In addition, the district sound control unit 10 is driven to ring the district bell 12 by supplying a drive voltage to the bell wire 11. The ringing of the district bell 12 by the district sound control unit 10 is performed by the operation unit 7
Depending on the operation state of the district bell stop switch provided in, ringing or stop ringing is performed. Further, the MPU 6 causes the transfer circuit 31 to output a transfer signal for displaying a transfer.
An external display unit is connected to the transfer circuit 31 if necessary, and a fire alarm can be displayed even on an external display unit installed separately from the fire monitoring control panel 1.

Further, the fire monitoring control board 1 is provided with a power source section 13 for receiving commercial AC100V and receiving circuit section 5.
The power supply voltage of 24V DC is supplied to the 24V drive units such as -1 to 5-n and the district sound control unit 10. Further, since the MPU 6, the display unit 8 and the like have a circuit section which operates with a 10V power supply or a 5V power supply, DC10V and DC5V can be supplied to supply a power supply voltage to these circuit sections. Further, DC 30V is supplied to the 30V driving unit.

The power supply unit 13 is provided with a battery as a backup power source, as will be described later, and is switched to the backup power source for backup when the commercial AC 100V is interrupted. The standby power supply test apparatus of the present invention is provided for this standby power supply, and the MPU
A backup power supply test control unit 27 and a timer 34, which are realized by program control, are provided at 6.

Further, the standby power supply test switch 25 is the operation unit 7.
Is provided. The standby power supply test switch 25 is a push-button switch having a non-lock structure, which is turned on while the switch is pressed and turned off when the switch is released. Further, the display unit 8
In order to display the status of the power supply unit 13, the AC power supply lamp 1
7, a standby power supply lamp 28 and a standby power supply test result lamp 29 are provided.

The AC power supply lamp 17 lights up when the DC power supply voltage based on the commercial AC 100V is normally obtained. The standby power supply lamp 28 lights up when the battery is switched to the standby power supply. Standby power supply test result lighting 29
Depending on the judgment result of the standby power supply test, for example, as shown in FIG.
It lights up normally, goes off when abnormal, and blinks when the battery level is insufficient.

The standby power supply test control unit 27 of the MPU 6 switches to a commercial AC of 100 V from the time when the change in the ON operation of the backup power supply test switch 25 is detected to the time when the change in the OFF operation is detected, that is, during the operation. The test is performed by switching the supply of the DC power supply voltage based on the above to the power supply by the battery as the standby power supply and connecting the dummy load for discharging to the standby power supply. Furthermore, when the standby power supply test switch 25 is turned on, the timer 34 is started, and the control is forcibly ended when the fixed time set in the timer 34, for example, 10 minutes has elapsed.

Further, the standby power supply test control section 27 outputs an audible alarm when a predetermined time set in the timer 34 has elapsed. This sound output may sound the main sound device 9 in a form different from that at the time of fire, or may sound a dedicated buzzer. FIG. 2 is a circuit diagram showing an embodiment of the standby power supply test apparatus of the present invention provided on the fire monitoring control board 1 of FIG. 1 together with the power supply unit.

In FIG. 2, a commercial AC 100V is supplied to the primary winding 14a of the transformer 14 via a fuse FS1. The transformer 14 includes a primary winding 14a and a secondary winding 1
It has a simple structure with two winding taps provided with 4b.
In this embodiment, AC24V is applied to the secondary winding 14b.
(Effective value) is output. Following the transformer 14, a rectifying and smoothing circuit 15 is provided as a DC power supply circuit.

The rectifying / smoothing circuit 15 rectifies 24V AC of the secondary winding 14b of the transformer 14 by the diode bridge 15a via the fuse FS2 and further smoothes it by the capacitor C1 to obtain a DC voltage of about 30V. Rectifying smoothing circuit 1
The output of 5 is fuse FS3, diode D6, 24V
It is output to the load side as DC24V via the constant voltage circuit 24. DC3 from the output side of the diode D6
0V is taken out.

On the other hand, a charging circuit 19 on the lower side is branched from the rectifying / smoothing circuit 15, and the charging circuit 19 has a current limiting resistor R8 and a rectifying diode D5. Charging circuit 19
Is connected to the battery 20 as a standby power source via the fuse FS4. In the present invention, the battery as the standby power supply supplies the battery voltage of DC12V, which is half that of DC24V supplied by the rectifying / smoothing circuit 15.

The power supply switching circuit 16 switches between the power supply by the rectifying / smoothing circuit 15 and the power supply by the battery 20. The power supply switching circuit 16 is a Zener diode ZD.
The decrease in the output voltage of the rectifying / smoothing circuit 15 is detected by the series circuit of 1 and the resistor R4. For example, the Zener voltage of the Zener diode ZD1 is selected so that the output voltage of the rectifying / smoothing circuit 15 is turned on at 12 V or more, and the resistance R
4, the zener diode ZD1 is turned off when the voltage falls below a specified voltage of about 17V, and a drop in the output voltage of the rectifying / smoothing circuit 15 and, in fact, a commercial AC100V power failure is detected.

The connection point between the Zener diode ZD1 and the resistor R4 is connected to the transistor Q1 via the resistors R5 and R6.
Connected to the base of. The transistor Q1 has a collector connected to the relay 18. If the output voltage of the rectifying / smoothing circuit 15 is 17 V or higher and normal, the Zener diode ZD
With the conduction of 1, the transistor Q1 receives the base bias and is turned on, and the relay 18 is driven. The relay 18 has switching relay contacts 18a and 18b.

The switching relay contact 18a is provided on the battery 20 side, and the switching relay contact 18b is provided on the 10V constant voltage circuit 22 side which will be made clear later. In addition, a resistor R is provided in parallel with the relay 18 at the collector of the transistor Q1.
An AC power supply lamp 17 using an LED is connected via 36. When the output voltage of the rectifying / smoothing circuit 15 is normal at 17 V or more, the AC power supply lamp 17 is turned on by turning on the transistor Q1, and indicates that commercial AC 100 V is normally obtained.

Further, in the power supply switching circuit 16, the transistor Q2 is connected in parallel between the base and the emitter of the transistor Q1 via the resistor R6. The base of the transistor Q2 is the MPU of the fire monitoring control board 1 of FIG. 1 via the resistor R7.
6 is connected. MPU6 is the standby power supply test switch 2
During the period from the detection of the ON operation of 5 to the detection of the OFF operation, the standby power supply test control unit 27 outputs the control signal E1 to turn on the transistor Q2, and the operation of the relay 18 is stopped by turning off the transistor Q1. Switch to the standby power supply.

In order to monitor the power supply voltage required for the power supply switching control unit 26 provided in the MPU 6, a series circuit of resistors R1 and R3 is provided after the capacitor C1 of the rectifying / smoothing circuit 15, and the divided voltage E2 is connected to the resistor C1. It is input to MPU6 via R2. A booster circuit 21 is connected to the battery 20 provided as a standby power source. A DC-DC converter is used as the booster circuit 21. Booster circuit 21
To the input of, the + side of the battery 20 is connected via the switching relay contact 18a of the relay 18 provided in the power supply switching circuit 16. The switching relay contact 18a is a commercial AC100.
When V is normal, it is switched to the b side by turning on the relay 18, but when the commercial AC 100V goes out of power, the relay 18
Is turned off, and the switching relay contact 18a is switched to the side a in the figure.

Therefore, the DC 12V of the battery 20 is input to the booster circuit 21, and the booster circuit 21 inputs the input 12V to about 3V.
Boosts to 0V and outputs. The output of the booster circuit 21 is connected to the cathode side of the diode D6 via the diode D7. Therefore, the diodes D6 and D7 form a diode OR that switches between the power supply voltage of the rectifying / smoothing circuit 15 and the backup power supply voltage from the booster circuit 21.

Further, the output line of the booster circuit 21 is connected to a standby power supply lamp 28 using an LED via a resistor R9. In the standby power supply lamp 28, the switching relay contact 18a is switched to the a side as shown in the drawing when the relay 18 is turned off by the power supply switching circuit 16, the battery voltage 12V is supplied from the battery 20, and the booster circuit 21 boosts about 30V. Lights when voltage is output, indicating that standby power is being supplied normally.

Further, in the power supply device of the present invention, 10 V
A constant voltage circuit 22 and a 5V constant voltage circuit 23 are provided. 1
The 0V constant voltage circuit 22 supplies DC10V to the 10V drive circuit of the display unit 8 or the like in FIG. The 5V constant voltage circuit 23 is M
DC5V is supplied to the circuit which operates at 5V including PU6. 24V DC generated from the 24V constant voltage circuit 24 is supplied to the 10V constant voltage circuit 22 through the b side of the switching relay contact 18b. That is, commercial AC100V
When the relay 18 is turned on, the switching relay contact 18b is closed to the side b, and DC24V is input to the 10V constant-voltage circuit 22.
Creating V. The output of the 10V constant voltage circuit 22 is
Further, the voltage is supplied to the 5V constant voltage circuit 23, the input DC 10V is stepped down to 5V, and DC 5V is output.

The switching relay contact 18b provided on the input side of the 10V constant voltage circuit 22 is directly supplied with the battery voltage of 12V from the battery 20 instead of the DC 24V boosted by the booster circuit 21. Next, the corresponding circuit portion of the standby power supply test apparatus of the present invention in the power supply device of FIG. 2 will be described. First, for the MPU6, the standby power supply test switch 2
5 is connected. The standby power supply test switch 25 is a non-lock type push button switch, and is turned on while the switch is being pressed. During this time, the standby power supply test control unit 27 of the MPU 6 operates to perform the standby power supply test.

A standby power supply test circuit 32 is provided for the test operation by the standby power supply test controller 27. The standby power supply test circuit 32 applies the test signal E3 from the MPU 6 to the resistor R1.
4 has a transistor Q3 which is supplied to the base through
The collector of the transistor Q3 is connected to the base of the transistor Q4 via the resistor R15.
The collector of No. 4 is connected to a discharge dummy resistor R16 which allows a load current to flow in the preliminary power supply test.

The emitter of the transistor Q4 is the booster circuit 2
1 output. Therefore, the backup power supply test circuit 32 causes a DC 30V output obtained by boosting the DC 12V output from the battery 20 by the booster circuit 21 to flow through the dummy resistor R16 to perform a test operation of the entire standby power supply including the battery 20 and the booster circuit 21. . Further, a standby power supply test result lamp 29 using an LED is connected to the MPU 6.

The voltage monitoring by the MPU 6 during the standby power supply test monitors the output voltage of the battery 20 on the input side of the booster circuit 21 obtained via the switching relay contact 18a. Therefore, the input of the booster circuit 21 is branched to M
A voltage input circuit 23 that supplies the voltage signal E4 to PU6 is provided. The voltage input circuit 33 includes resistors R10 and R11.
The input voltage is divided by and the Zener diode ZD2 for the limiter is connected between the resistors R12 and R13.

The standby power supply test control unit 27 provided in the MPU 6 when the standby power supply test switch 25 is turned on.
In the test operation by, when a change in the ON operation of the standby power supply test switch 25 is detected, the MPU 6 first outputs the power supply switching signal E1 to the transistor Q2 of the power supply switching circuit 16 to turn it on. This forcibly cuts off the transistor Q1 to turn off the relay 18, and the switching relay contact 18
Pseudo AC10 for switching a and 18b to the illustrated side a
Creates a 0V blackout condition.

Then, the test signal E3 is output to the standby power supply test circuit 32 to turn on the transistor Q3, and the transistor Q3 is turned on to turn on the transistor Q4.
A dummy resistor R16 is connected to the output of the booster circuit 21, and a load current for a preliminary power supply test is supplied by connecting a pseudo load.
At this time, since DC30V is also supplied to the receiving circuit section side via the diode D7, in addition to the power supply to the normal load, the load current due to the connection of the dummy resistor R16 flows. The output voltage of the battery 20 under test by the operation of the standby power supply test circuit 32 based on the test signal E3 is branched from the input side of the booster circuit 21 and is taken into the MPU 6 as the voltage signal E4, which is a predetermined specified voltage, that is, the battery. It is determined whether the voltage of 20 is in the normal range in which it can effectively operate.

The voltage judgment in this preliminary power supply test is normal if, for example, 10.2 V or more, less than 10.2 V 7.
If it is 0 V or more, it is determined to be abnormal, and if it is less than 7.0 V, it is determined that the remaining amount of the battery 20 is insufficient. As shown in FIG. 4, the standby power supply test result lamp 29 is controlled according to the result of the voltage determination at the time of this test. In addition, regarding the battery shortage,
The buzzer 35 sounds intermittently to give an alarm.

Further, the standby power supply test control unit 27 starts the timer 34 when detecting a change due to the ON operation of the standby power supply test switch 25. The timer 34 is preset with a fixed time for determining the testable time of the standby power supply test, for example, 10 minutes, and the time is up when the fixed time elapses. In response to the time-up of the timer 34, the standby power supply control unit 27 performs control to forcibly end the test even if the standby power supply test switch 25 is turned on. At the end of the test, the transistor Q2 of the power supply switching circuit 16 is turned off, the relay 18 is actuated by turning on the transistor Q1, and the power supply is returned from the rectifying and smoothing circuit 15, and at the same time, the transistors Q3 and Q4 of the standby power supply test circuit 32 are turned off. The dummy resistor R16 is cut off.

Next, the processing operation of the standby power supply test controller 27 provided in the MPU 6 of FIG. 2 will be described with reference to the flowchart of FIG. When the standby power supply test switch 25 provided in the receiver for the standby power supply test is pressed, it is turned on. When the change in which the standby power supply test switch 25 is turned on is detected in step S1, the process proceeds to step S2, and the standby power supply test control unit 27 outputs the control signal E1 from the MPU 6 to the transistor Q2 of the power supply switching circuit 16.

Therefore, the transistor Q2 is turned on,
The transistor Q1 which has been in the ON state until then is forcibly cut off, and the relay 18 is deactivated. When the relay 18 is deactivated, its switching relay contact 18
a and 18b are switched to the illustrated side a. As a result, the supply of the DC power supply voltage from the rectifying / smoothing circuit 15 is switched to the supply of the DC power supply voltage by the battery 20 and the booster circuit 21 as the standby power supply. Furthermore, the standby power supply test control unit 2
7 outputs a test signal E3 to the transistor Q3 of the standby power supply test circuit 32. Therefore, the transistors Q3 and Q4 are turned on, and the dummy resistor R1 is added to the output of the booster circuit 21.
6 is connected.

Then, in step S3, the timer 34 is started. Subsequently, the voltage signal E4 output from the voltage input circuit 33 to which the + side line of the battery 20 is input-connected is supplied to the MPU6.
The state of the battery 20 is judged by checking the voltage thus taken in. The criteria for the battery 20 are determined to be normal (10.2 V or higher), abnormal (less than 10.2 V and 7.0 V or higher), and insufficient battery level (less than 7.0 V). Determine if it applies.

Next, in step S4, the test result based on the determination result of step S3 is displayed. When the detected voltage of the battery 20 is normal, the standby power supply test result lamp 2
9 is turned on. When the detected voltage of the battery 20 is abnormal, the standby power supply test result lamp 29 is turned off. Furthermore, when the battery detection voltage indicates that the remaining battery level is insufficient, the standby power supply test result lamp 29 blinks. The blinking state of the standby power supply test result lamp 29 indicating the state of insufficient remaining battery power is maintained even after the standby power supply test is completed, so that the operator can surely deal with it.

Here, the battery 2 is used for the preliminary power supply test.
If the specified boosted voltage is obtained from the booster circuit 21 when switching to the 0 side, the backup power supply lamp 28 lights up, and the backup power supply including the battery 20 and the booster circuit 21 is normally performed. I understand. Also, in the embodiment of FIG.
Since the output voltage of the battery 20 is boosted by the booster circuit 21 and is supplied as a standby power supply voltage, the output line of the booster circuit 21 is supplied to the MP circuit by a circuit similar to the voltage input circuit 33.
The test result may be displayed in the same manner by taking in U6, determining whether the output voltage of the booster circuit 21 is normal, abnormal, or insufficient battery level.

If the test result is displayed in step S4, the process proceeds to the next step S5, and it is determined whether the test result determined in step S3 is insufficient, specifically, whether the battery residual amount is insufficient. Check if it is less than 0.0V. If the remaining amount is not insufficient, the time-out of the timer 34 is checked in step S6. If the time is not up, it is checked in step S7 whether the standby power supply test switch 25 is turned off. When it is detected in step S7 that the standby power supply test switch 25 is turned off, that is, when the on operation is stopped, the process proceeds to step S8, and the standby power supply test end control is performed.

In this termination control, the control signal E1 from the MPU 6 is stopped, the transistor Q2 of the power source switching circuit 16 is turned off, the transistor Q1 is turned back on and the relay 18 is operated, and its relay contacts 18a and 18b are turned on. To the side and switch to the power supply from the rectifying / smoothing circuit 15. At the same time, the test signal E3 output from the MPU 6 to the standby power supply test circuit 32 is turned off, the transistors Q3 and Q4 are restored to off, and the dummy resistor R connected to the battery 20 is turned on.
16 is cut off.

Finally, the timer 34 is cleared in step S9, and the process returns to step S1 again. On the other hand, if the result of determination in step S5 is that the remaining battery power is insufficient, the process proceeds from step S5 to step S8 immediately, and after the standby power supply test end control is performed, the timer 34 is cleared in step S9. Even if the standby power supply test switch 25, which was being pressed for the backup power supply test, is released and the ON operation is stopped, if the switch contact does not open due to a switch failure and remains in the ON state, the backup power supply test is performed. The operating state of is continued. However, the standby power supply test switch 25
When the timer 34 activated by the ON operation of (1) elapses after a predetermined time elapses.

When this time-up is discriminated in step S6, the process proceeds to step S8, the standby power supply test termination control is forcibly performed, and the timer 34 is set even if the ON state continues due to the switch failure. The standby power supply test can be surely completed after a certain time. Therefore, it is possible to surely avoid the situation where the battery 20 is exhausted due to the discharge by the preliminary power supply test, or the dummy resistor R16 through which the discharge current of the battery 20 flows is abnormally heated. Further, when the timer 34 times out, the buzzer 35 is made to intermittently ring, for example, "beep beep," so that the operator can be notified of an abnormality in the standby power supply test device or the standby power supply test switch 25.

It should be noted that the switch continues to be in the on state due to a failure, and the switch continues to be in the on state even after the standby power supply test is forcibly ended after a certain period of time, but the MPU 6 detects a change in the on operation. Therefore, the backup power supply test will not be performed again. When the standby power supply test is continued by pressing the standby power supply test switch 25 and the timer 34 is timed up in this state, the buzzer 35 sounds at the same time as the forced termination of the standby power supply test, so that caution is required. You can

In the embodiment of the present invention shown in FIG. 2, an example is used in which the battery 20 as a standby power source is a battery of 12 V and the voltage is boosted by the booster circuit 21 to supply the voltage of the standby power source. However, even if the booster circuit 21 is not provided and the battery 20 having the same 24 V as that on the rectifying / smoothing circuit 15 side is used, the standby power supply test device of the present invention can be applied in the same manner.

[0049]

As described above, according to the present invention, even if the standby power supply test switch has been kept on for more than the time required for the test due to a failure or the like, the preset power supply test switch is set in advance. After a lapse of a certain time, the preliminary power supply test is forcibly completed, and excessive consumption of the battery and abnormal heat generation of the dummy resistor discharging the battery during the preliminary test can be reliably prevented.

Further, by outputting an audible alarm when a predetermined time has passed since the standby power supply test switch was turned on,
It is possible to inform the operator of the preliminary power supply test and abnormality of the switch, and to call attention to mischief.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a disaster prevention monitoring system to which the present invention is applied.

FIG. 2 is a circuit block diagram showing an embodiment of the present invention.

FIG. 3 is a flowchart of a processing operation of a standby power supply test control unit in FIG.

FIG. 4 is an explanatory diagram of a display operation of a test result of a standby power supply test.

[Explanation of symbols]

 1: Fire monitoring and control panel 2-1 to 2-n: Detector line 3: Fire detector 4: Termination resistance 5-1 to 5-n: Receiver circuit 6: Control unit 7: Operation unit 8: Display unit 9: Main audio device 10: District sound control unit 11: Bell line 12: District bell 13: Power supply device 14: Transformer 15: Rectifying and smoothing circuit (DC power supply circuit) 15a: Diode bridge 16: Power supply switching circuit 17: AC power supply lamp 18 : Relays 18a, 18b: Switching relay contacts 19: Charging circuit 20: Battery (standby power supply) 21: Booster circuit 22: 10V constant voltage circuit 23: 5V constant voltage circuit 24: 24V constant voltage circuit 25: Standby power supply test switch 26: Power supply switching control unit 27: Standby power supply test control unit 28: Standby power supply light 29: Standby power supply test result light 30: External display unit 31: Notification unit 32: Standby power supply test circuit 33: Voltage input Circuit 34: Timer 35: Buzzer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akio Adachi 2-1043 Kamiosaki, Shinagawa-ku, Tokyo Within Ho Chiki Co., Ltd.

Claims (2)

[Claims] 1. While operating the standby power supply test switch,
In a standby power supply test device for a fire monitoring and control panel, which switches a supply of a DC power supply voltage based on a commercial AC power supply to a power supply by the backup power supply, and connects a dummy load to the backup power supply for testing. A standby power supply test device for a fire monitoring control panel, which is provided with a standby power supply control unit for forcibly ending the standby power supply test when a certain time has elapsed after detecting the ON state of the test switch. 2. The standby power supply device for a fire monitoring and control panel according to claim 1, wherein the standby power supply test control unit outputs a sound when a predetermined time has elapsed after detecting the ON of the standby power supply test switch. A standby power supply test device for fire monitoring and control panels, which is characterized by outputting an alarm.