JPH0432439B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a disaster prevention receiver that is used in connection with a fire or intrusion detector, etc., and in particular, is capable of arbitrarily self-diagnosing the electrical operation capability of its internal circuit and notifying the results of the diagnosis. This product relates to disaster prevention receivers such as fire receivers, smoke prevention equipment, and alarm receivers that can be maintained thoroughly.

Various types of disaster prevention receivers have been proposed and put into practical use. In the former case, when personnel check the capacity of a backup power source for use during a power outage, etc., they should visually check whether each switch is in the correct position (fixed position), and conduct a line continuity check. I was checking the line selection switch by changing it line by line. Furthermore, in the latter case, maintenance personnel operated the power selector switch to switch to the standby power source, and used a voltmeter to check whether the power source had capacity. Therefore, maintenance work has become cumbersome in both cases. Furthermore, if the fire detector is a self-holding type, and when testing the operation of each fire detector in sequence, it is necessary to cut off the power supply to the detector and release the self-holding after each fire detection test operation is completed. For this purpose, a recovery switch or test recovery switch is used. Therefore, in this case, separate maintenance personnel should be assigned to the fire detector installation site and the fire receiver installation site, and communication between the two maintenance personnel should be made via transceiver, etc. each time the fire detector operation test is completed. There was the inconvenience of having to negotiate.

Therefore, the purpose of the present invention is to eliminate the trouble and inconvenience of checking the operational function of conventional disaster prevention receivers, and to check the continuity of each circuit and line of the disaster prevention receiver and the fixed position of each switch with simple operations. The purpose is to provide a disaster prevention receiver that can automatically diagnose inspections, etc. and notify the diagnosis results.
At the same time, in cases where a self-holding type sensor is used, the present invention aims to provide a disaster prevention receiver that allows a single maintenance person to complete both inspection and self-holding release.

Another object of the present invention is to provide closed-loop verification of abnormality detectors operated daily by combining disaster prevention receivers, such as fire receivers, smoke control equipment, and conventional security systems. The objective is to provide a new disaster prevention receiver that can perform self-diagnosis using start or alarm release operations and send the diagnosis results to a specific external headquarters by using the security system. It is.

According to the present invention, there is provided a power supply unit comprising a regularly used AC power supply circuit, a reserve power supply circuit that can be stored, and a power supply switching circuit that mutually switches between the two circuits, and a sensor that receives power input from the power supply unit. a sensor reception unit comprising a response circuit that responds to the sensor reception unit and a test circuit for the response circuit; a backup power supply circuit of the power supply unit; There is provided a disaster prevention receiver comprising a self-diagnosis unit comprising means and a means for notifying diagnosis results. below,
The present invention will be explained in detail by way of example of a fire receiver on the basis of an embodiment shown in the accompanying drawings.

FIG. 1 is a block diagram showing the configuration of a fire receiver according to the present invention, FIGS. 2 to 6 are electrical circuit diagrams showing the configuration of each unit of the fire receiver, and FIG. 7 is a block diagram showing the configuration of each unit of the fire receiver. FIG. 8 is a block diagram showing another embodiment of the fire receiver. FIG. 8 is a block diagram showing the configuration when the same fire receiver is used in combination with a security system.

Now, according to the configuration of the fire receiver shown in Fig. 1, a power supply unit 1, a fire reception unit 2, and a self-diagnosis unit 3 are provided, and the power supply unit 1 introduces AC power from the commercial line to supply the regular power supply. An AC power supply circuit 21 for supplying AC power, a backup power supply circuit 22 that supplies power in the event of a power outage by rectifying and accumulating AC power, and a power supply switching circuit 23 that performs mutual switching between the AC power supply circuit 21 and the backup power supply circuit 22. Equipped with The fire receiving unit is connected to a well-known ringing bell 7 such as a main bell and a district bell for notifying the occurrence of a fire, and includes an acoustic circuit 31 equipped with a main bell stop switch and a district bell stop switch, which will be described later, to stop the ringing of these bells. Normally, a sensor circuit 33 connected to each of a plurality of fire detectors 6, a test recovery switch (described later) used to test the operation of the fire detector 6, and a test recovery switch (described later) used to restore the fire receiver itself. The test circuit 32 includes a test circuit 32 and a recovery switch. Furthermore, the self-diagnosis unit 3 is connected to the power supply unit 1,
Self-diagnosis activation means 4 for activating the self-diagnosis operation when performing self-diagnosis of the fire reception unit 2, and notification means 5 for notifying the results of the self-diagnosis.
It is composed of: Next, the internal structure, self-diagnosis structure, and operation and effect of each of the above-mentioned units 1, 2, and 3 will be explained in detail with reference to the respective figures.

Figure 2 shows power supply unit 1 and self-diagnosis unit 3.
FIG. In the figure, when the AC power supply is turned on, the upcoming power supply current passes through diode _d1 , is half-wave rectified, and is passed through the current limiting resistor.
REL switching contacts RRC ₂ , manual battery test switch
The battery BA, which forms a backup power source that can store electricity, is charged via _S2 . On the other hand, the power supply current from the AC power supply is rectified and smoothed by the rectifier REC, and the relay
PR is biased, and the relay PR is energized and operated. Therefore, the relay contacts Pr ₁ and Pr ₂ are switched to the dotted line side, and power is supplied to the test circuit 32 and the sensor circuit 33 as a regular power source through the relay contacts Pr ₁ . In addition, relay contact Pr ₂
Similarly, common power supply power is supplied to the aforementioned acoustic circuit 31 via the same. In addition, at this time, the power supply current flows through the resistor re2 to the LED1, which is an AC power indicator light, to indicate the operation of the AC power circuit 21. In addition,
In the event of an AC disconnection or power outage, relay PR is demagnetized and its operation is canceled, and both relay contacts Pr ₁ and Pr ₂ switch to the solid line position. As a result, power is supplied in advance from the battery BA, which is stored in advance.

Next, in FIG. 2, when the self-diagnosis switch S ₁ of the self-starting means 4 is manually turned on, the negative side of the relay PRC is connected to the ground terminal via the switch S ₁ , and the relay PRC is connected to the AC power circuit 21 or It operates with excitation current supplied from the standby power supply circuit 22. Therefore, the relay contact rrc ₁ is opened and rrc ₂ is switched to the side indicated by the dotted line. As a result, relay PR becomes inactive and AC power circuit 2
When 1 is used, both relay contacts Pr ₁ and Pr ₂ switch to the solid line position. Therefore, the current from the battery BA flows to the ground side via the battery test switch _S2 , the relay contact _rrc2, the backup power indicator LED2, and the transistor _Q1 . Therefore, if there is not enough charge in battery BA, the standby power indicator LED2
Since the lamp does not light up, it is ultimately possible to check the performance of the battery BA. That is, the self-diagnosis unit 3 is equipped with a notification element that responds to the lighting and non-lighting of the standby power indicator LED 2, and the self-diagnosis result is notified.

Note that in the above and following cases, the self-diagnosis switch _S1 is turned on for only a few seconds, and is a self-recovery type example. Next, the alarm circuit 31 of the fire receiving unit 2
The structure and operation and effect will be explained based on FIGS. 3 and 4. Now, the acoustic circuit 31 is a main bell acoustic circuit 31A shown in FIG. 3 connected to the main bell, and a district bell acoustic circuit 31A shown in FIG. 4 connected to the district bell.
It consists of B. As is clear from FIGS. 3 and 4, both circuits 31A and 31B have substantially the same configuration, that is, one is connected to the known main bell 7a, and the other is connected to the known district bell 7b. Other than that, they have the same configuration. The main bell acoustic circuit 31A includes a main bell stop switch S ₃ , a fire detection relay contact rf ₁ , a main bell circuit normal light LED 3, a current limiting resistor re 3, etc., and receives power from the power supply unit 1 shown in FIG. configured to receive supplies. In addition, the district bell sound circuit 31B includes a district bell stop switch _S4 , a fire detection relay contact _rf2 ,
District bell circuit normal light LED4, current limiting resistor RE4
etc. as main elements, and similarly receives supply of power from the power supply unit 1 shown in FIG. In both of these circuits 31A and 31B, the main bell stop switch S ₃ and the district bell stop switch S ₄ have the solid line positions shown in FIGS. 3 and 4 as their home positions, respectively, and when they switch to the dotted line positions, the main bell stops. and disable the district bell. and main bell stop switch
When the fire detection relay contacts RF ₁ and RF ₂ are closed in response to fire detection when S ₃ and the district bell stop switch S ₄ are in their respective positions, the main bell 7a and the district bell 7b will ring. be. Also these main bells 7
a. To stop the ringing of district bell 7b, press each stop switch.
This is achieved by switching S ₃ and S ₄ to the main bell stop and district bell stop positions indicated by dotted lines, but these are already in the positions of each of the above stops (indicated by dotted lines) when a fire occurs.
If the switch is switched to , the bell will not ring, so it is necessary to check and diagnose in advance that the main bell stop switch S ₃ and the district bell stop switch S ₄ are in the normal position indicated by the solid line.

Next, the self-diagnosis function of the main bell acoustic circuit 31A (FIG. 3) will be explained. Now, when switching from the AC power supply circuit 21 in the power supply unit (FIG. 1) to the backup power supply circuit 22 by operating the self-diagnosis activation means 4 (FIG. 1) of the self-diagnosis unit 1, the backup power supply circuit 22 is switched. The current supplied from the main bell stop switch _S3 operates the relay RF, which will be described later, so that it flows to the contact _rf1 , and further flows to the main bell 7a, and at this time, the main bell 7a rings. Therefore, the self-diagnosis result can be notified based on the presence or absence of ringing. During this time, if the main bell stop switch _S3 is not in the above-mentioned normal position (solid line position) or if a disconnection occurs in the main bell circuit, the above-mentioned current flow is obstructed and the main bell 7a is stopped. It doesn't ring. In addition, since the self-diagnosis switch S ₁ is only turned on for a few seconds, the contact rf ₁ is opened after a few seconds, and the current supplied from the AC power supply circuit 21 is passed through the main bell stop switch S ₃ to the main bell circuit normal light LED 3. and further flows to the main bell 7a. Therefore, if the notification means 5 of the self-diagnosis unit 3 is provided with a receiving element that responds to the lighting or non-operation of the main bell circuit normal light LED 3, the line of the main bell sound circuit 31A can be checked at any time. Here, the main bell circuit normal light LED3
Since the current flowing through the main bell 7a is weakened by the current limiting resistor re3, the main bell 7a will not ring.

The above description is based on the main bell acoustic circuit 31A of FIG.
Although the process by which the self-diagnosis is carried out has been described for the above, the self-diagnosis is similarly carried out in the district bell sound circuit 31B of FIG. 4, which has substantially the same configuration.

FIG. 5 shows an example of the overall configuration of the fire receiving unit 2, which includes the above-mentioned acoustic circuit 31, a test circuit 32, a detector circuit 33 to be described in detail later, a district light circuit 34 for displaying the fire district, and a fire test circuit 35. FIG. Therefore, the above-mentioned main bell sound circuit 31A and district bell sound circuit 31B are included in the same circuit.
are connected in parallel. Now, focusing on the test circuit 32 shown in FIG. 5, the self-diagnosis function of this test circuit 32 will be explained.

Now, when the power supply current is supplied from the standby power circuit 22 (FIGS. 1 and 2) of the power supply unit 1 in the same way as described above by activating the self-diagnosis starting means 4, the test circuit 32 detects that the fire receiver is Current flows to the ground side via a non-locking always-on recovery switch _S5 and a test recovery switch _S6 .
At this time, if the switch S ₆ is not at least in the fixed position indicated by the solid line in Figure 5, the test circuit normal light LED connected in series with the switch S ₆ in the same circuit 32
Since no current flows through S5, it does not light up, diagnosing that the above-mentioned test recovery switch _S6 is not in its home position. Of course, the test circuit normal light LED5 lights up.
The notification element that responds to non-lighting is the self-diagnosis unit 3.
The self-diagnosis result is notified.

Next, the configuration and self-diagnosis function of the sensor circuit 33 will be explained with reference to FIG.

Now, the detector circuit 33 in FIG. 5 shows a case where fire detectors 6 are installed in a plurality (n) of districts, and each district also has a plurality of fire detectors. A fire relay RL ₁ that responds when one of the fire detectors in each area detects a fire...
RL _o is provided, and sensor circuit normal lights LED1 _' ...LED _o ' are connected in series to each fire relay RL1...RL _o . Furthermore, relay contacts rlf ₁ . . . rlf _o of the relay RLF of the fire test circuit 35, which will be described later, are provided in the sensing circuit of each district.

When the self-diagnosis means 4 described above is activated, the state is the same as when the fire test switch _S7 in the fire test circuit 35 is closed and turned on, and the relay RLF is excited by the power supply current, and its relay contact rlf ₁ ...
Close rlf _o . As a result, each fire relay RL ₁
...RL _o , the sensor circuit normal light LED1'...LED _o ', and the power supply current flows through the closing contact _rlf1 ...rlrn. Therefore, it is possible to excite and operate each fire relay RL ₁ ... RL _o in the same way as when the fire detector 6 detects a fire, and as a result, it is not possible to operate the district light circuit 34 normally. Or, as mentioned above, the main bell 7
a. It is possible to test whether the district bell 7b rings normally.

Therefore, continuity or disconnection of the sensor line in each area can be diagnosed by checking whether the sensor circuit normal lights LED1'...LED _o are lit or not. In this case, a notification of the self-diagnosis result can be obtained by providing a notification element in the notification means 5 of the self-diagnosis unit 3 that responds to the lighting of each sensor circuit normal light LED1'...LED _o' . Under normal conditions, a power supply current is supplied to the sensor circuit 33, and the power supply current passes through the coils of the fire relays RL ₁ ...RL _o to each sensor circuit normal light LED 1'...
The light passes through the LED _o ', flows to each fire detector 6 installed in each area, and flows to the ground side through the terminating resistors _Rr1 ... _Rro . In addition, at this time, the terminating resistor Rr ₁ …Rr _o
By appropriately designing and selecting each resistance value in advance, the current flowing through the fire relay R _L1 ... R _Lo can be weakened,
Fire relay R _L1 ...
R _Lo never works. In other words, the relay operation equivalent to the fire detection operation is not performed all the time, but the continuity or disconnection of the sensor circuit in each area can be checked at all times by checking whether the sensor circuit normal lights LED1'...LED _o ' are lit or not. .

Note that the fire receiver is connected to the AC power supply circuit 21 (first
If the fire detector 6 in any district, for example district 1
When the fire detector 6 detects a fire, current flows through the fire relay RL ₁ and through the fire detector 6 to the ground side. Fire relay RL ₁ is therefore energized and activated. Therefore, the contact rl ₁₁ of the relay RL ₁ ,
rl ₁₂ is turned on, current flows through relay RF and through contact rl ₁₂ to the ground side, and relay RF operates. Furthermore, when the contact rl ₁₁ is turned on, the abnormality indicator light LED 1'' and the district light 1 of the district light circuit 34 are turned on, and by lighting both, it is possible to detect the area where the fire has occurred.Furthermore, the relay RF is activated. By doing so, the contact point provided in the acoustic circuit 31
rf ₁ and rf ₂ are turned on, causing the main bell 7a and district bell 7b to ring as described above.

FIG. 6 shows another embodiment of the fire receiving unit 2, which is configured so that, especially when the fire detector is of a self-holding type, the self-holding function can be automatically canceled after the self-diagnostic inspection of the fire detector. This shows the configuration of the main parts of the case. Therefore, unlike the embodiment shown in FIG. 5, the description of the acoustic circuit 31 is omitted in FIG. 6. Now, in the circuit shown in FIG.
is a self-holding disconnection means that automatically cuts off the power supply to the fire detector 6' after the test operation of the fire detector 6' is completed, and the self-holding disconnection means 100 is:
A photocoupler 111, a transistor 112 connected in series with the light emitting diode 111a of the photocoupler, a capacitor 116 connected in series with the phototransistor 111b of the photocoupler 111, and a programmable union transistor (PUT) 115. Applicable
A transistor 114 to which the output of PUT 115 is connected to the base side, a relay 113 connected to the collector side of the transistor 114, and a contact point of the relay 113 connected to a line for supplying power.
It consists of rk and rk. A sensor circuit 110 is connected to the self-holding fire detector 6' and determines whether or not the fire detector 6' has detected a fire.This sensor circuit 110 itself is similar to that shown in FIG. It has substantially the same configuration as the fire relay RLn connected to the fire detector 6 installed in each district, a detector circuit normal light LEDn', etc.
Each sensor circuit 110 is individually connected to an OR gate 117, which is connected to the base side of the transistor 112. S ₅ is a recovery switch for the test circuit 32, and S ₆ is a test recovery switch for the same circuit 32.

Next, the operation of the embodiment shown in FIG. 6 will be explained.
During maintenance including test operations, maintenance personnel move the test recovery switch _S6 to the second contact side (indicated by a dotted line). The fire detector 6' is constantly supplied with power via the corresponding detector circuit 110.

When maintenance personnel generate a simulated fire using a test jig such as a smoke testing device, the fire detector closest to the approximate fire detects the fire, and a fire signal is detected by the corresponding sensor circuit 110. The fire signal passes through the diode of the OR gate 117 and current flows to the base of the transistor 112.
The transistor works. Light emitting diode 11 of photocoupler 111 through current limiting resistor R11
A current flows to the side 1a, and the phototransistor 111b of the photocoupler 111 operates. Capacitor 116 therefore stores charge through resistor _R2 .
When the potential at point a of PUT115 becomes higher than point b,
PUT 115 is activated and current is supplied to the base of transistor 114, causing transistor 114 to operate. Therefore, the relay 113 is energized and its contact rk is opened, so that the power supply to the fire detector 6' which was previously activated due to the near fire and its corresponding detector circuit 110 is cut off. In other words, the self-holding state of the fire detector 6' and its corresponding sensing circuit 110 is released. Then capacitor 116
Since the charges accumulated in PUT 115 are supplied for operation of PUT 115, the potential at point a of PUT 115 becomes lower than the potential at point b. Therefore, the base current of transistor 114 disappears and relay 113 is no longer normally energized, so that its contact rk is closed and the normal state is restored. As a result, power is supplied to the detector circuit 110 and the fire detector 6'. Therefore, the operation of the previous fire detector 6' and another self-holding type fire detector 6' is tested again using, for example, a smoke tester. In this way, one person can sequentially test the operation of all the fire detectors 6' in each area.

Next, an embodiment in which the disaster prevention receiver according to the present invention, such as a fire receiver and smoke prevention equipment, is used in combination with a conventional security system will be described with reference to FIG.

In FIG. 7, 50 is a fire receiver according to the present invention, which is connected to the fire detector 6 or 6', the main bell 7a, the district bell 7b, and the indicator light 8, and is also connected to the self-diagnosis unit 3. There is. on the other hand,
The fire receiver 50 is connected to the alarm system via the self-diagnosis unit 3. The alarm device 52 of this alarm system has a control section 54, a monitoring section 56, a display section 58, and a transmitting section 6, similar to the configuration of this type of system.
0, a monitoring section 56 is connected to an abnormality detector 62 disposed in the security area, and a transmitting section 60 is generally coupled to a specific headquarters 66 located remotely. Further, the alarm system 52 has a switching operation device 64, and the switching operation device 64 is used to switch between a warning state and a warning release state.

Now, when operations that are normally performed every day in a security system, such as closed-loop confirmation of abnormality detectors, alarm initiation, alarm cancellation, etc., are performed via the switching operation device 64, the self-diagnosis unit 3's self-diagnosis unit 3 is activated using the operation as a trigger. If the diagnosis activation means 4 (FIG. 1) is configured to operate, the fire receiver 5 can be activated every day.
It is possible to check the continuity of each circuit, each line, etc. of 0, and diagnose the fixed position of each switch, etc., and there is no need to perform an operation to trigger the self-starting means 4 again. Furthermore, by transmitting the self-diagnosis results to the specific headquarters 66 through the alarm device 52 of the security system, the self-diagnosis results of the user's fire receiver 50 can be reliably checked every day, and ultimately double A monitoring system can be established. Furthermore, if the results are printed and recorded for each user at the specific headquarters 66, they can be effectively used as maintenance records.

In addition, in the configuration of the embodiment shown in FIG.
Once the signal from the switching operation device 64 is taken into the alarm device 52, the self-starting means 4 of the self-diagnosis unit 3 is activated.
However, this is not restricted to this method and is triggered by the switching operation device 64.
The self-diagnosis unit 3 may be connected directly to the self-diagnosis unit 3 to activate it directly, or the display section 58 of the alarm device 52 may be used to notify the self-diagnosis results. 3 may be incorporated into the security system.

Here I will briefly explain the security system.
An abnormality sensor 62 such as an intrusion abnormality detector installed in the user's building is connected to the alarm device 52, and a switching operation device 64 for changing the security mode such as starting security, canceling security, etc. is connected to the alarm device 52. The alarm device 52 determines abnormality or normality based on the security mode and the signal from the abnormality detector 62, and transmits the abnormality signal and the security mode to the specific headquarters 66 through the transmitter 60. In addition, the current security status and abnormal/normal status of the property are displayed so that they can be understood.

For example, when the operation to start security is performed by triggering the self-diagnosis activation means 4, if the self-diagnosis result is abnormal, security can be prevented from starting and the security mode setter is alerted. The alarm may be configured at the time of release of the alarm.

FIG. 8 shows an embodiment in which the self-diagnosis result notification means is configured to be outputted by voice expression. In FIG. 8, the audio output unit 70 is connected to the fire receiver 50, and the self-diagnosis result is output to the speaker 7.
8, the notification is made by voice expression. Note that this audio output section 70 may be a part of the notifying means 5 (FIG. 1) in the self-diagnosis unit 3 of the fire receiver according to the present invention;
FIG. 8 shows, for example, a case where a configuration is adopted in which the audio output section 70 is independently connected to the fire receiver 50,
The internal configuration and effects of the audio output section 70 are clarified.

Now, the configuration of the audio output section 70 is as shown in FIG. 8, including an audio address selection section 71, a DC motor 72,
It is equipped with a drum rotation section 73, a head selection section 74, a magnetic head 75, an amplification section 76, and a contact 77.
It is wired to 8. According to the above-mentioned configuration, when the self-diagnosis starting means 4 of the self-diagnosis unit 3 is activated to perform a self-diagnosis, the operation is as follows.

The self-diagnosis result is notified by turning on and off each normal light in the fire receiver 50, and is notified to the notification means 5 of the self-diagnosis unit 3 by, for example, an optical fiber. At this time, for example, if there is an abnormality in the self-diagnosis result, the abnormal result is transmitted to the notification means 5.
This information is used by the audio address selection unit 71 of the audio output unit 70 to select the address that stores the audio corresponding to the abnormal location. The output of the audio address selection section 71 drives a DC motor 72,
The drum rotating section 73 storing the audio is rotated. Then, it stops at the drum corresponding to the abnormal location. The output of the audio address selection section 71 is sent to the magnetic head 75 via the head selection section 74 to the drum rotation section 7.
Set to the corresponding channel of 3. At the same time, the output of the audio address selection section 71 turns on the contact 77. The sound read by the magnetic head 75 is transmitted through an amplification section 76 and then broadcast through a speaker 78 in the form of sound. Regardless of abnormal situations, even in normal times,
Of course, it is also possible to output audio.

Adopting the voice expression method as described above has the advantage that maintenance personnel can directly understand the diagnosis results, unlike indirect notifications such as lamp displays or bell ringing displays. Note that the audio output section 70 may be housed inside the fire receiver 50 or may be provided separately. Further, the information transmission means between the fire receiver 50 and the self-diagnosis unit 3 may be the above-mentioned optical fiber, or may be wired using a normal electrical signal system.

Furthermore, according to this embodiment, when the fire detector 6 or 6' detects a fire, the abnormality indicator LED in the fire receiver 50 lights up, so it is possible to know in which district the fire has occurred. , main audio output section 7
By using 0, accurate voice instructions can be given even in the event of a fire. At this time, if one line of the sensor circuit detects the condition, an inspection instruction may be issued, and if two or more lines detect the condition, an evacuation instruction may be issued. Furthermore, this audio output unit 70 and broadcasting equipment may be linked to broadcast evacuation instructions throughout the building when a fire is detected.

As explained above, according to the present invention, a situation similar to a simulated fire test is created, so disconnections and fuses in each line, which are difficult to detect until periodic inspections and maintenance are carried out, can be prevented. It is possible to easily diagnose whether relays and lamps are disconnected, and whether each switch is in the correct position can be automatically detected with a simple operation, so accidents can be prevented.
Furthermore, if the activation of the self-diagnosis function and the notification of the diagnosis results are linked with the security system, there is no need for special operations for self-diagnosis, and if the results are printed out at a specific headquarters, maintenance for each user is possible. Management records can be kept, making appropriate maintenance possible. Furthermore, if the notification results are output using a printer or voice, it is possible to check for malfunctions in disaster prevention receivers through direct recognition, and if combined with broadcasting equipment,
It is also possible to reliably guide evacuations before a catastrophe occurs.

Furthermore, even when a self-holding sensor is connected, only maintenance personnel are required to test the operation of the sensor, eliminating the need for maintenance personnel on the disaster prevention receiver side.
In addition, disaster prevention receivers and detectors can automatically shut off the self-holding of abnormal signals, which is less complicated and reliable compared to conventional receivers that manually shut off the power to disaster prevention receivers. This has the effect of increasing efficiency, simplifying maintenance work, increasing efficiency, and shortening work time accordingly.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the basic configuration of, for example, a fire receiver according to the present invention, FIG. 2 is a circuit diagram showing the configuration of the power supply unit of the same receiver, and FIGS.
The same figure is a circuit diagram showing the configuration of the acoustic circuit of the same receiver, FIG. 5 is a circuit diagram showing one embodiment of the overall configuration of the internal circuit of the same receiver, and FIG. FIG. 7 is a circuit diagram showing the configuration of the main parts; FIG. 7 is a block diagram showing the connection configuration when a fire receiver according to the present invention is connected to a security system; FIG. FIG. 3 is a block diagram showing a configuration example for taking out data. 1...Power supply unit, 2...Fire receiving unit, 3
...Self-diagnosis unit, 4...Self-diagnosis activation means, 5
... Alarm means, 6, 6'... Fire detector, 7... Ringing bell, 7a... Main bell, 7b... District bell, 21... AC power supply circuit, 22... Standby power supply circuit, 23... Power supply switching circuit, 31... Acoustic circuit , 22...Test circuit, 33...
Sensor circuit, 66...Specific headquarters, 70...Audio output section.

Claims (1)

[Scope of Claims] 1. A power supply unit comprising a regularly used AC power supply circuit, a reserve power supply circuit that can be stored, and a power supply switching circuit that mutually switches between the two circuits; Start electrical operation diagnosis of a sensor receiving unit comprising a response circuit that responds to the sensor and a circuit for testing the response circuit, a backup power supply circuit of the power supply unit, and a response circuit of the sensor reception unit. 1. A disaster prevention receiver comprising a self-diagnosis unit comprising a activation means for instructing the patient and a means for notifying diagnosis results. 2. The disaster prevention receiver according to claim 1, wherein the activation means of the self-diagnosis unit is configured to send out a diagnosis start signal in response to an external electrical signal. 3. The disaster prevention receiver according to claim 1, wherein the notification means of the self-diagnosis unit is configured to enable remote notification as well as internal notification. 4. The disaster prevention receiver according to claim 1, wherein the notification means of the self-diagnosis unit includes audio notification means. 5. The disaster prevention receiver according to claim 1, wherein the test circuit of the sensor receiving unit incorporates a self-holding disconnection circuit for a self-holding type sensor.