JPH07200962A - Automatic test equipment for fire alarm equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To simplify the operation test of fire detectors and shorten the test time. [Structure] The fire detector 3 ₁ of the _first address is made to perform an operation test by the test alarm pulse output from the receiver _1, and the fire detectors 3 ₂ , 3 _{3 of} the second and subsequent addresses,
The operation alarm test is performed by the test alarm pulse output from the fire detector 3 of the immediately preceding address in 3 _n , and each fire sensor 3 outputs the test alarm pulse within the predetermined time. In case of not outputting, the receiver 1 outputs the test alarm pulse instead. As a result, the fire detector 3 at the address next to the fire detector 3 that does not output the test alarm pulse
Performs a test operation. When the test operation of all the fire detectors 3 is completed, the address of the abnormal fire detector is displayed on the display unit 7 of the receiver 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire alarm facility automatic test apparatus suitable for use in a fire alarm facility which outputs an alarm from a fire detector for detecting smoke, gas, heat or the like.

[0002]

2. Description of the Related Art Conventionally, in this kind of automatic test equipment, an address and a test command are transmitted to each of a plurality of fire detectors to which an address is assigned, and the test result output from each fire detector is thereby transmitted. Is input on the receiver side to judge the quality of the fire detector. In this case, every time one fire detector is designated, the quality is judged from the test result output from the designated fire detector. That is, after outputting the address and the test command to the first fire detector, it waits until the test result is output from this fire detector. When the test result is output, the test result is input and the quality of the first fire detector is determined. After determining the quality of the first fire detector, an address and a test command are output to the second fire detector. As a result, when the test result is output from the second fire sensor, the test result is input and the quality of this fire sensor is determined. After that, the same process is performed for all the remaining fire detectors.

[0003]

By the way, in the above-mentioned conventional automatic testing device for the fire alarm system, data is exchanged every time one fire detector is designated to judge the pass / fail. Therefore, there is a problem that the transmission procedure becomes complicated, the circuit becomes complicated, and the test time becomes long as a whole.

Therefore, an object of the present invention is to provide an automatic test device for a fire alarm system which can simplify the operation test of the fire detector and shorten the test time.

[0005]

In order to achieve the above object, an automatic testing device for fire alarm equipment according to claim 1 according to the present invention is a receiver for a plurality of fire detectors connected to the same detector line. An automatic test device of a fire alarm system for issuing a test command to each of the fire detectors in order of address by issuing a test command, and the receiver has a test alarm output means for outputting a test alarm pulse. However, the fire detector counts the test alarm pulse and outputs a coincidence signal when the count value coincides with a preset own address number, and a counting means when the coincidence signal is output. The test control means for controlling the operation of the detector of the fire detector and the test alarm pulse are output by stopping the operation after a predetermined time has passed after the control of operating the detector. And having a test onset paper output unit that.

The automatic test device for fire alarm equipment according to claim 2 is the automatic test device for fire alarm equipment according to claim 1, wherein the receiver issues a test report output from the fire detector. When the test alarm detection means for detecting a pulse and the test alarm pulse is output from the test alarm output means, or the test alarm pulse output from the fire detector is output by the test alarm detection means. A test that controls the time output from the time when it is detected and a control that causes the test alarm output means to output a test alarm pulse when the test alarm pulse is not output from the fire detector within a predetermined time. And a warning output control means.

Further, in the automatic test device for fire alarm equipment according to claim 3, in the automatic test device for fire alarm equipment according to claim 2, a test alarm pulse is not output from the fire detector within a predetermined time. In some cases, it has a storage means for storing the address of the fire detector.

Further, the automatic test device for fire alarm equipment according to claim 4 is the automatic test device for fire alarm equipment according to claim 1, wherein the receiver receives a test alarm pulse from the test alarm output means. Timing means for timing from the time of output, test alert output time storage means for storing the test alert time of each of the fire detectors, and test alert output for the test alert output time storage means And a test report output control means for controlling the test report output means to output the test report pulse when the test report pulse is not detected at the report time.

The automatic test device for fire alarm equipment according to claim 5 is the automatic test device for fire alarm equipment according to claim 4, wherein the test alarm time stored in the test alarm output time storage means is It is characterized by having a storage means for storing the address of the fire detector when the test alarm pulse is not output from the fire detector.

An automatic test device for fire alarm equipment according to claim 6 is the automatic test device for fire alarm equipment according to claim 4 or 5, wherein the test report output control means is Controlling the test alert output means to output the test alert pulse when the test alert pulse is not detected within a predetermined time from the test alert output time stored in the test alert output time storage means. Is characterized by.

[0011]

In the present invention, first, a test alarm pulse is output from the receiver to set the count value of each fire detector to "1". When the count value becomes "1", the address of the first fire detector coincides with this count value, so that the first fire detector starts the test operation. If the operation is normal, a test alarm pulse is output. As a result, the count value of each of the second and subsequent fire detectors becomes "2". Count value is "2"
Then, since the address of the second fire detector matches this count value, this second fire detector starts the test operation. If the operation is normal, a test alarm pulse is output. As a result, the count value of each of the third and subsequent fire detectors becomes "3". When the count value becomes "3",
This time the third fire detector starts the test operation. After that, similarly, each time the previous fire sensor outputs a test alarm pulse, the next fire sensor starts the test operation.

On the other hand, the receiver measures the time from the output of the test alarm pulse, and if it determines that the fire alarm pulse of the first address does not output the test alarm pulse within a predetermined time, the first address It outputs a test alarm pulse instead of the fire detector of. At this time, it is recorded that the fire detector at the first address is defective. The fire detector of the second address starts the test operation by outputting the test alarm pulse instead of the fire detector of the first address. In this case as well, the receiver starts timing from the output of the test alarm pulse. When a test alarm pulse is output from the fire detector at the second address, the time is counted from the time when it is detected, and the test alarm pulse is output from the fire detector at the third address within the specified time. If it is determined that the fire alarm is not output, the test alarm pulse is output instead of the fire detector at the third address.

Similarly, after the test alarm pulse output from each fire detector is detected, or when the test alarm pulse is output instead of the defective fire detector, the time is measured for a predetermined time. It is then determined whether or not a test alarm pulse will be output from the next fire detector. When it is determined that the test alarm pulse is not output, the fact that the fire detector is defective is recorded.

As described above, each fire detector starts the operation test according to the test alarm pulse output from the receiver and the test alarm pulse output from the fire sensor of the immediately preceding number. , The transmission procedure in the test of each fire detector is simplified as compared with the case where the receiver exchanges data each time one fire detector is designated to judge the quality of the fire detector. The test time is shortened overall.
The fire alarm test pulse for each fire detector is monitored on the basis of the test alarm pulse time stored in advance for each fire sensor.If the test alarm pulse cannot be detected at the stored time, the test alarm pulse is output. A report pulse may be output.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. Example 1. FIG. 1 is a block diagram showing a fire alarm system to which an embodiment 1 of an automatic test device for a fire alarm system according to the present invention is applied. In the figure, reference numeral 1 is a receiver, a control unit 5 for controlling each part of the apparatus, a timer 6, a display unit 7 having a display such as a liquid crystal display, an alarm unit 8 having a buzzer, and a sensor circuit. 2, a current detection unit 9 for detecting the current flowing through 2, a recovery circuit 10, and a plurality of operation switches 11
And an automatic test switch 12. The control unit 5 is configured to have a CPU, a ROM, a RAM and the like (not shown), and a program for controlling the CPU is written in the ROM. The RAM is also used as a work area.

The receiver 1 detects a fire by monitoring the current on the detector line 2 in the normal fire detection mode.
In this case, multiple fire detectors (smoke,
(Heat, gas, etc.) 3 is connected, and if any one of them detects a fire, the potential between the terminals becomes substantially zero, which increases the value of the current flowing through the sensor line 2. When the receiver 1 determines that the current value is equal to or higher than the specified value, it activates the alarm unit 8 and the display unit 7. That is, the buzzer is sounded and the display of the display unit 7 displays the content indicating that a fire has occurred. On the contrary,
When the automatic test switch 12 is turned on, the receiver 1 enters the automatic test mode and starts the operation test for each fire detector 3.

Each fire detector 3 generally detects a smoke concentration, a gas concentration, or a temperature value, and when it detects that the value exceeds a predetermined value, the switching circuit incorporated therein is triggered at that time, As a result, the terminals are short-circuited. This causes a large current to flow in the sensor line 2. In addition,
A terminating resistor 15 is connected to the terminating end of the sensor line 2.
Each fire detector 3 performs an operation test by receiving the test alarm pulse output from the receiver 1 and the test alarm pulse indicating the test result output from each of the other fire sensors 3. In this case, a unique address is set in advance for each fire detector 3. For example, the fire detector 3 ₁ is set to the first address, and the fire detector 3 ₂ is set to the second address.

Each of the fire detectors 3 starts an operation test when it detects that the number of input test alarm pulses matches its own address. For example, as shown in FIG. 2, when the fire alarm 3 ₁ receives the test alarm pulse P ₁ output from the receiver 1, the count value becomes “1”, so that it matches with its own address and the operation test is performed. To start. In this case, if normal, the test alarm pulse P ₂ shown in FIG. 2B is output.
When the receiver 1 receives the test alarm pulse P ₂ , it determines that the fire detector 3 ₁ is normal. On the other hand, when the test alarm pulse P ₂ is output from the fire detector 3 ₁ , the count value becomes “2”, which coincides with the address of the fire detector 3 ₂ . Thus, the fire detector 3 ₂ starts an operation test. In this case, if normal, the test alarm pulse P3 shown in FIG. 2C is output. After that, other fire detectors 3 ₃ ,
An operation test is performed by inputting a test alarm pulse output from the immediately preceding fire detector for 3 ₄ , ..., 3 _n . In this embodiment, the pulse width of the test notification pulse P is set to 2
It is set to 00 msec.

By the way, as shown in FIG. 2 (f), when the fire detector 3 ₅ to which the fifth address is set is defective and the test alarm pulse P ₆ is not output from this fire detector 3 _5. , 6th address set fire detector 3 ₆
Will not be able to perform a motion test. Assuming such a case, the receiver 1 operates the timer 6 from the time when it first outputs the test alarm pulse and the time when the test alarm pulse output from each fire detector 3 is input. It monitors the time. In this case, when the test alarm pulse whose self-address coincides with the count value does not output the test alarm pulse within the predetermined time, the test alarm pulse is output instead of the fire sensor 3. In this way, the fire detector 3
When tested onset report pulse P ₆ from the fire detector ₃₅ within a predetermined time is not output from the time you enter the test onset report pulse P ₅ from _4, test onset report pulse P ₆ as shown in FIG. 2 (b) Is output. This fire detector 3 ₆ starts an operation test. The waveform in FIG. 2C shows L- when the test alarm pulse is output from the receiver 1 and each fire detector 3.
The change of the terminal voltage between C is shown.

FIG. 3 is a block diagram showing the construction of the smoke detector 3 for smoke detection. In this figure, 20 is a diode bridge, the input end of which is connected to the sensor line 2. 21 is a thyristor, the anode of which is connected to one of the output ends of the diode bridge 20,
The cathode is a diode bridge 2 via a resistor 50.
It is connected to the other output terminal of 0. Reference numeral 22 denotes an NPN type transistor, the collector of which is connected to one of the output ends of the diode bridge 20 and the emitter of which is connected to the connecting portion of the cathode of the thyristor 21 and the resistor 50. A resistor 23 and a capacitor 24 are inserted in parallel between the gate of the thyristor 21 and the other output end of the diode bridge 20.
The cathode of the diode 25 is connected to the gate of 1.

Reference numeral 26 is a sensor section for sensing smoke,
As shown in FIG. 4, the phototransistor 27 and the light emitting diodes 28 and 29 are provided. Sensor section 2
The phototransistor 27 of No. 6 and the light emitting diode 28 for monitoring are arranged so as to be separated from each other with the directions of their detection surfaces being different from each other so that the light of the light emitting diode 28 does not go directly to the phototransistor 27. When the smoke Sm enters between the phototransistor 27 and the light emitting diode 28, the light of the light emitting diode 28 is scattered by the smoke Sm, and the scattered light is detected by the phototransistor 27. The light emitting diode 29 is used for a test, and is arranged with its light emitting surface facing the detection surface of the phototransistor 27, as shown in FIG. With this arrangement, the light from the light emitting diode 29 directly reaches the phototransistor 27. Therefore, the light emission

Reference numeral 30 denotes an amplification section which amplifies and outputs the output of the sensor section 26. A fire determination circuit 31 determines whether or not there is a fire based on the output of the sensor unit 26 amplified by the amplification unit 30. In this case, when the output of the sensor unit 26 exceeds a predetermined value, it is determined that a fire has occurred and a gate pulse P _g is output. This gate pulse P _g is supplied to the gate of the thyristor 21 via the diode 25. In this embodiment, the pulse width of the gate pulse P _g is set to 100 msec, but it is not limited to this. Reference numeral 32 denotes a waveform shaping unit, the input end of which is connected to one output end of the diode bridge 20, and the start pulse P _st output from the receiver 1 and the test signal output from the other fire detector 3 are output. The report pulse P and the like are shaped and output.

A pulse width measuring unit 33 measures the width of the pulse output from the waveform shaping unit 32 and detects the test alarm pulse P and the start pulse P _st . in this case,
When the start pulse _Pst is detected, the programmable counter 34 is supplied to the reset terminal to supply the programmable counter 34 with the counter 3
4 is reset. When the test alarm pulse P is detected, it outputs a count to the programmable counter 34. The programmable counter 34 counts the number of pulses and outputs a coincidence signal when counting up to the set number of pulses. The setting of the count value in the programmable counter 34 is performed by the DIP switch 35. For example, when the count value is set to "3", a coincidence signal is output when counting up to this number. This count value corresponds to the address. For example, since the address of the fire detector 3 ₁ is "1", it is set to "1". Further, since the address of the fire detector 3 ₅ is "5", it is set to "5".

Reference numeral 36 is a test control unit for performing an operation test of the sensor. When the coincidence signal output from the programmable counter 34 is input, the test light emitting diode 29 of the sensor unit 26 is lit for a predetermined time (for example, several msec). Let In this case, when the light emitting diode 29 of the sensor unit 26 is turned on, if the phototransistor 27, the amplification unit 30, the fire determination unit 31, the diode 25, the thyristor 21, and the like of the sensor unit 26 are normal, the thyristor 21.
Turns on. As a result, LC is short-circuited and the voltage becomes substantially zero. A timer unit 37 detects the output of the gate pulse P _g from the fire determination unit 31 and the fall of the voltage due to the short circuit between L and C when the thyristor 21 is turned on by the output of the gate pulse P _g. Output waveform shaping unit 3
When the output from the AND circuit 39, which outputs the L signal from the H signal to the H signal by the inverter 40, is received, the time is counted from that time to the set timer time, and when the set time is reached, the time-up pulse P Output _u . Although the timer time is set to 200 msec in this embodiment, it is not limited to this. In addition,
A circuit or element (delay line) for timing adjustment may be inserted between the diode 25 and the AND circuit 39.

Reference numeral 38 denotes a pulse control unit, which is a timer unit 37.
When the time-up pulse P _u is input, a thyristor reset pulse P _rst is output. In this embodiment, the pulse width of the thyristor reset pulse P _rst is 100 mse.
Although set to c, it is not limited to this.
The thyristor reset pulse P _rst output from the pulse control unit 38 is supplied to the base of the transistor 22.
This turns on the transistor 22. When the transistor 22 is turned on, its collector-emitter voltage becomes lower than the anode-cathode voltage of the thyristor 21, and the thyristor 21 is turned off. As a result, a test alarm pulse P having a pulse width of 200 msec is obtained. FIG. 5 is a time chart showing the situation.

By the way, the phototransistor 27 of the sensor unit 26, the amplifying unit 30, the fire judging unit 31, the diode 2
If at least one of 5 and the thyristor 21 is abnormal, the fire determination circuit 31 does not output the gate pulse P _g . Therefore, the thyristor 21 remains off, and the fire alarm 3 does not output the test alarm pulse P. Although the photoelectric type fire detector 3 is configured in this manner, the ionized type and the thermal type are different only in the sensor unit, and the configurations other than this sensor unit are substantially the same. Although the test method differs for each sensor, it can be performed by a known method. Further, the DIP switch 35 in each fire detector 3 are carried out setting according to the address, for example, the fire sensor 3 ₁ is set to "1", the fire detector 3 ₂ "2" Is set.

The control section 5 corresponds to a test report output means, a test report output control means, a storage means and a test report output time storage means. In addition, the control unit 5 and the timer 6
Constitutes the time keeping means 100. Further, the control section 5 and the current detection section 9 constitute a test report detection means 110.
The test control unit 36 corresponds to the test control means.
Further, the programmable counter 34 and the dip switch 35 constitute the counting means 120. In addition, the sensor unit 26, the amplification unit 30, the fire determination unit 31, the diode 25, the resistor 23, the capacitor 24 and the thyristor 2
1 constitutes the sensing unit 130. Also, the timer unit 3
7. The pulse control unit 38 and the transistor 22 constitute a test report output unit 140.

Although each of the fire detectors 3 does not use a microcomputer, the programmable counter 34, the test control section 36, the timer section 37 and the pulse control section 38 can be realized by a microcomputer. In this case, the microcomputer is a CPU,
It consists of RAM and ROM, and the ROM has C
A program for controlling the PU is written.

Description of Operation Next, a test operation of the fire alarm system having the above-mentioned configuration will be described. (1) Operation of Receiver 1 FIG. 6 is a flowchart showing the operation of the receiver 1. First, in step S10, the recovery circuit is controlled so that T
Turn off for _st period. That is, the start pulse _Pst is output. Then, in step S12, the L-C line is turned off for the T _w period. That is, the test notification pulse P ₁ is output. Next, in step S14, the timer 6 is turned on to start measuring time. Then, in step S16, the fire detector 3
_{From 1,} it is determined whether or not the test alarm pulse P ₂ indicating the test result has been output. When it is determined that the test alarm pulse P ₂ is output, the address “1” of the fire detector 3 ₁ is set to the area A (the address of the normal fire detector is set to the address of the normal fire detector) in the memory (RAM constituting the control unit 5) in step S18. Write to a dedicated area for writing).

Next, in step S20, the count value is "1".
To increase. As a result, the count value becomes "2". This count value corresponds to the address of the next fire detector 3 ₂ . After increasing the value of the counter, the timer 6 is reset in step S22. After this processing, the process returns to step S14. If it is determined in the determination in step S16 that the test alarm pulse P ₂ is not output from the fire detector 3 _1, it is determined in step S24 whether the time is over. That is, it is determined whether a predetermined time has passed. In this case, if the predetermined time has not elapsed, the process returns to step S16, and if the predetermined time has elapsed, the process proceeds to step S26. Here, the predetermined time is a limit time during which the fire detector 3 ₁ has to output the test notification pulse P ₂ after the receiver 1 outputs the test notification pulse P ₁ .

In step S26, it is determined whether the address is the final address. That is, it is determined whether or not it is the final fire detector 3 _n . Since the fire detector 3 ₁ is not the final _one , the process proceeds to step S28. In step S28, the address "1" of the fire detector 3 ₁ is written in the memory area B (exclusive area for writing the address of the abnormal fire detector). After this processing, the count value is incremented by "1" in step S30. As a result, the count value becomes "2". Then, in step S32, L-C is turned off for the T _w period. That is, the test alarm pulse P is output instead of the fire detector 3 ₁ . Next, in step S34, the timer 6 is reset. After this process,
It returns to step S14. When the process returns to step S14, the timer 6 is turned on to start counting. And step S1
At 6, it is judged whether or not the test alarm pulse P ₃ is output from the fire detector 3 ₂ . If it is determined that the test alarm pulse P ₃ is output, the fire detector 3 ₂ is output in step S18.
The address "2" is written in the area A of the memory. After this processing, the count value is increased by "1" in step S20. As a result, the count value becomes "3". Then, step S22
Reset the timer 6 with. Then, the process returns to step S14.

When it is determined in the above step S16 that the test alarm pulse P ₃ is not output from the fire detector 3 _2, it is determined in step S24 whether the time is over. If the predetermined time has not elapsed, step S
Returning to step 16, and if the predetermined time has elapsed, step S26
Proceed to. Here, the predetermined time from the time when the fire detector 3 ₁ From the test onset JOURNAL pulse P ₂ is output, the limit time must fire detector 3 ₂ From the test onset report pulse P ₃ is output. It should be noted that this predetermined time is the same for the remaining fire detectors 3 ₃ , 3 ₄ , ..., 3 _n , and since the test alarm pulse P is output from the immediately preceding fire detector 3,
This is the limit time during which the test alarm pulse P must be output from the current fire detector 3.

In step S26, it is determined whether the address is the final address. That is, the final fire detector 3 _n
It is determined whether or not. Since the fire detector 3 ₂ is not the final one, the process proceeds to step S28, and the address of the fire detector 3 ₂ is written in the area B of the memory in this step S28. After this processing, the count value is "1" in step S30.
To increase. Then, the inter-L-C only clear T _w period in step S32, and outputs the test onset report pulse P ₃ in place of the fire detector 3 _2. Next, in step S34, the timer 6 is reset. After this processing, the process returns to step S14.

Thereafter, the same processing is performed up to the fire detector 3 _n at the final address. In this case, when the fire detector 3 _n at the final address is reached, it is determined in step S26 that it is the final fire detector 3 _n , and the process proceeds to step S36. In this step S36, all addresses of the normal fire detector 3 and the abnormal fire detector 3 are displayed on the display of the display unit 7. In this case, the address of the normal fire detector 3 and the address of the abnormal fire detector 3 are displayed separately. However, at least an abnormal fire detector should be displayed. After this, if there is a next sensor line, the same process is continuously performed.

(2) Operation of the fire detector 3 (a) Fire detector 3 _{1 When the} start pulse P _st is output from the receiver 1, the start pulse P _st is supplied to the waveform shaping unit 32 and the waveform is shaped. Then, after the waveform is shaped, it is supplied to the pulse width measuring unit 33, and the pulse width is measured. Here, when the start pulse _Pst is detected, the programmable counter 34 is reset by this. When the test report pulse P ₁ is output from the receiver 1 in this state, the count value of the programmable counter 34 becomes “1”. This count value "1" is compared with the set value of the DIP switch 35, and if they match, a pulse is supplied to the test control unit 36. When the count value “1” and the set value of the DIP switch 35 match and a pulse is supplied to the test control unit 36, the test control unit 36 turns on the test light emitting diode 29 of the sensor unit 26 for a predetermined time.

When the light emitting diode 29 of the sensor section 26 is turned on, the current flowing through the phototransistor 27 of the sensor section 26 increases, is amplified by the amplifying section 30, and is then supplied to the fire judging section 31. If the value of this current is larger than the reference value, the gate pulse P _g is the diode 2
It is supplied to the gate of the thyristor 21 via 5. As a result, the thyristor 21 is turned on and LC is short-circuited. The gate pulse P _g is also supplied to the AND circuit 39. When L and C are short-circuited, the waveform shaping unit 3
2 outputs a falling signal to the inverter 40, which causes the inverter 40 to output an H signal to the AND circuit 39.
Is output to. The AND circuit 39 receives the H signal from the inverter 40 and the gate pulse P _g and outputs the H signal from the inverter 40 to the timer unit 37, and the gate pulse P _g.
By receiving the information, it can be determined that the fire detector operates normally. When the output from the AND circuit 39 is supplied to the timer unit 37, a time-up pulse P _u is output 200 msec after that and is supplied to the pulse control unit 38.

A time-up pulse P is sent to the pulse control unit 38.
_{When u} is supplied, the pulse control unit 38 outputs a thyristor reset pulse P _res , and the transistor 22
Supplied to the base of. As a result, the transistor 22
Turns on. When the transistor 22 is turned on, the forward voltage between the collector and the emitter of the transistor 22 becomes lower than the forward voltage between the cathode and the anode of the thyristor 21, so that the thyristor 21 is turned off. As a result, the fire alarm 3 ₁ outputs the test alarm pulse P ₂ having the pulse width T _w . On the other hand, when the light emitting diode 29 of the sensor unit 26 is turned on, if at least one of the sensor unit 26, the amplification unit 30, the fire determination unit 31, the diode 25, and the thyristor 21 is defective, the test alarm pulse P ₂ Is not output.

(B) Operation of the fire detector 3 ₂ At the time when the test alarm pulse P ₁ is output from the receiver 1, the count value of the programmable counter 34 is "1". When the test alarm pulse P ₂ is output from the device 3 ₁ , the count value of the programmable counter 34 becomes “2”, which matches the set value of the dip switch 35. As a result, a pulse is supplied to the test control unit 36, and the light emitting diode 29 of the sensor unit 26 lights up for a predetermined time. After that, the same operation as that of the fire detector 3 ₂ is performed, and the test alarm pulse P ₃ is finally output. on the other hand,
Similar to the fire detector 3 ₁ , the sensor unit 26 and the amplification unit 3
If at least one of 0, the fire determination unit 31, the diode 25, and the thyristor 21 is defective, the test alarm pulse P ₃ is not output.

(C) Operation of the fire detectors 3 ₃ , 3 ₄ , ..., 3 _{n Like} the fire detector 3 ₂ , the operation test is performed by the test alarm pulse P output from the immediately preceding fire detector 3. If it is normal, the test alarm pulse P is output, and if abnormal, the test alarm pulse P is not output.

(3) Operation of the fire detector 3 (when the programmable counter 34, the test control unit 36, the timer unit 37, and the pulse control unit 38 are realized by a microcomputer) FIG. 7 is a flowchart showing the operation of the fire detector 3. Is. First, in step S50, it is determined whether or not the start pulse P _st is output from the receiver 1. This determination is made based on the detection of the start pulse P _st by the pulse width measuring unit 33. If the start pulse P _st is not detected, this step S50 is repeated. On the other hand, if the start pulse _Pst is detected, the programmable counter 34 is cleared in step S52.

Next, in step S54, it is determined whether or not the test alarm pulse P ₁ has been detected. If it is determined that it cannot be detected, step S54 is repeated. If it is determined that it has been detected, the process proceeds to step S56. Step S56
Then, increase the count value. That is, the test notification pulse P
_The count value is set to "1" by detecting "1". After increasing the count value, it is determined in step S58 whether the count value and the address match. In this case, since the address of the fire detector 3 ₁ is "1", step S60
Proceed to and start the test operation. That is, the sensor unit 26
The light emitting diode 29 is turned on for a predetermined time.

On the other hand, other fire detectors 3 ₂ , 3 ₃ , ..., 3 _n
Since the address is not "1", the process returns to step S54. Then, since the address matches when the count value is fire detector 3 ₂ becomes "2", the procedure goes to step S60. Similarly for the fire detector 3 _{3 and} subsequent steps, steps S54 to S58.
Is repeated by the number corresponding to the address. Now, the sensor unit 2
After turning on the light emitting diode 29 of No. 6, step S6
In step 2, it is determined whether or not the fire detector has operated normally. If it is determined that it cannot be detected, the process proceeds to step S64.
In step S64, it is determined whether or not the set time has elapsed, and if it is determined that the set time has not elapsed, the process returns to step S62. On the other hand, if it is determined that the set time has elapsed, the process ends. If it is determined in step S62 that the normal operation has been performed, a timer (2
00 msec) is started. And step S
At 68, it is determined whether or not the timer has finished counting,
If it is determined that the processing has not been completed, this step S68 is repeated. Then, when it is determined that the timer has finished counting,
In step S70, the transistor 22 is turned on and the thyristor 21 is turned off. As a result, the fire alarm 3 ₁ outputs the test alarm pulse P ₂ having the pulse width T _w .

Here, FIG. 8 and FIG. 9 show the interrelated operation of the receiver 1 and each fire detector. In this case, as shown in FIG. 9, the fire detector 3 _{16 at the 16th} address is defective, and instead of this fire detector 3 ₁₆ , the test alarm pulse P _{17 having the} pulse width T _w from the receiver 1 is used. You can see that is output.

Example 2. In the first embodiment, for the fire detector 3 ₁ , from the time when the test alarm pulse P ₁ is output from the receiver 1 to the time when the test alarm pulse P ₂ is output from the fire sensor 3 ₁ . monitoring the time, other fire detector 3 _2,
For 3 ₃ , ..., 3 _n , the current fire detector 3 from the time when the test alarm pulse P is output from the previous fire detector 3
Further, the time until the test alarm pulse P is output is monitored, and if the test alarm pulse P is not output within the predetermined time, the alternative test alarm pulse P is output from the receiver 1. The time at which the test alarm pulse P is output for each fire detector 3 is stored in the receiver 1, and if the test alarm pulse is not output at each time from each fire detector 3, a substitute test alarm is issued. The information pulse P may be output from the receiver 1. By doing so, it is not necessary to monitor the time for each fire detector 3, and there is an advantage that the load of software is lightened.

It should be noted that the receiver 1 is provided with a predetermined time width for outputting the test alarm pulse P for each fire detector 3.
Alternatively, if the test alarm pulse is not output from each fire detector 3 within each time width, the alternative test alarm pulse P may be output from the receiver 1. Further, in the above-described embodiment, the test is started by detecting the test alarm pulse from the receiver 1.
A fire detector may be provided to detect the start pulse from the receiver and initiate the test.

[0046]

According to the present invention, the fire detector of the first address is made to perform the operation test by the test alarm pulse output from the receiver, and the fire detectors of the second and subsequent addresses are made to operate. The test alarm pulse output from the fire detector at the immediately preceding address is used to perform the operation test, and if each fire detector does not output the test alarm pulse within the specified time, the receiver is replaced. Since the test alert pulse is output, the receiver specifies each fire detector one by one and sends and receives data to judge the quality of the fire detector. The transmission procedure in the test is simplified, and the test time is shortened as a whole.

[Brief description of drawings]

FIG. 1 is a block diagram of a fire alarm system to which an embodiment of an automatic test device for a fire alarm system according to the present invention is applied.

FIG. 2 is a timing chart showing a test operation of the fire alarm system of the embodiment.

FIG. 3 is a block diagram of a fire detector of the fire alarm system of the embodiment.

FIG. 4 is a configuration diagram of a sensor unit of a fire detector of the fire alarm system of the same embodiment.

FIG. 5 is a timing chart showing a fire sensing test operation of the fire alarm system of the embodiment.

FIG. 6 is a flowchart showing a test operation of the receiver of the fire alarm system of the same embodiment.

FIG. 7 is a flowchart showing a test operation of the fire detector of the fire alarm system of the embodiment.

FIG. 8 is a flowchart showing the related operations of the receiver and the fire detector of the fire alarm system of the same embodiment.

FIG. 9 is a flowchart showing the related operations of the receiver and the fire detector of the fire alarm system of the same embodiment.

[Explanation of symbols]

1 receiver 3 fire detector 5 control unit (test report output unit, test report output control unit, storage unit, test report output time storage unit) 36 test control unit (test control unit) 100 timing unit 110 test generation Report detection means 120 Counting means 140 Test report output means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Motoharu Mase 2-1043 Kamiosaki, Shinagawa-ku, Tokyo Hochiki Co., Ltd.

Claims (6)

[Claims] 1. An automatic test device for a fire alarm system, which issues a test command from a receiver to a plurality of fire detectors connected to the same detector line to issue a test report to each of the fire detectors in the order of addresses. The receiver has a test alarm output means for outputting a test alarm pulse, and the fire detector counts the test alarm pulses and sets its count value to its own address. A counting unit that outputs a coincidence signal when the numbers coincide with each other, a test control unit that controls the operation of the sensing unit of the fire detector when the coincidence signal is output, and a control that operates the sensing unit. And a test alarm output means for outputting a test alarm pulse by stopping the operation after a predetermined time from, an automatic test device for fire alarm equipment. 2. The receiver comprises a test alarm detection means for detecting a test alarm pulse output from the fire detector, and a test alarm pulse output from the test alarm output means, or When the test alarm pulse output from the fire detector is timed from the time when the test alarm detection unit detects the test alarm pulse, and the test alarm pulse is not output from the fire sensor within a predetermined time 2. An automatic test device for fire alarm equipment according to claim 1, further comprising: a test alert output control means for controlling the test alert output means to output a test alert pulse. 3. The fire alarm system according to claim 2, further comprising a storage unit that stores the address of the fire detector when the test alarm pulse is not output from the fire detector within a predetermined time. Automatic test equipment. 4. The receiver, wherein the test alarm output unit outputs a test alarm pulse to a timer, and a test unit that stores the test alarm time of each of the fire detectors. Trigger output time storage means, and output a test alert pulse to the test alert output means when no test alert pulse is detected at the test alert time stored in the test alert output time memory means An automatic test device for fire alarm equipment according to claim 1, further comprising a test report output control means for controlling. 5. A storage means for storing the address of the fire detector when the test alarm pulse is not output from the fire detector at the test alarm time stored in the test alarm output time storage means. 5. The automatic test device for fire alarm equipment according to claim 4. 6. The test alarm output control means, if the test alarm pulse is not detected within a predetermined time from the test alarm time stored in the test alarm output time storage means, the test alarm output means. 6. The automatic test apparatus for fire alarm equipment according to claim 4 or 5, wherein control is performed to output a test alarm pulse to the.