JPH06274780A - Disaster prevention monitor and terminal test method - Google Patents

Abstract

PURPOSE:To perform a terminal test without preventing an interrupt processing against fire judgement on the disaster prevention monitor and terminal test notifying the generation of abnormality such as fire to a reception side. CONSTITUTION:A test command section 5 sending an interrupt inhibiting command signal to a terminal to be tested in prior to the transmission of a test command signal and sending an interrupt inhibiting release command signal after the end of terminal test is confirmed is provided on a reception means 1. The terminal 2 is provided with an interrupt control section 8 inhibiting the operation of an interrupt transmission section 7 by the interrupt inhibiting command signal from the test command section 5 and releasing the operation inhibiting of the section 7 and a test control section 9 performing the test of terminal by a test command signal from the section 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disaster prevention monitoring device for collecting terminal information by calling from the receiving side, and particularly to a disaster prevention monitoring device for notifying the receiving side of an abnormal state by an interrupt from the terminal when an abnormality such as a fire occurs. Regarding the method.

[0002]

2. Description of the Related Art Conventionally, as this type of disaster prevention monitoring device,
Japanese Patent Application No. 3-214882 (Japanese Patent Laid-Open No. 5-6492) is known. In this disaster prevention monitoring device, steady collection of terminal information is performed by sequentially transmitting a call command signal specifying a terminal address from the receiver side, and transmitting terminal information as a response signal to the call command signal. The method is adopted. However, when an abnormality such as a fire occurs, there is a time delay until the abnormality is detected by polling, and therefore the occurrence of the abnormality is notified by an interrupt. That is, the terminal that detects a fire transmits a break signal that destroys the terminal response signal at the timing of transmitting the terminal response signal to the call, regardless of the call address. That is, the line response current is increased to destroy the terminal response signal so that the logic level becomes all 1, for example. When the receiver receives the all-one terminal response signal and determines the interrupt, the receiver starts a group search to identify the abnormal terminal that caused the interrupt, and if the abnormal group is identified, the abnormal terminal in the group Then, the process proceeds to the in-group search process for specifying, and an alarm terminal is detected and an alarm is displayed.

[0003]

However, in such a conventional disaster prevention monitoring device, even when the operation test of the terminal, for example, the operation test of the fire detector is performed by the instruction from the receiver, the fire is detected. As in the same manner as the above, an interrupt notification is sent by transmitting a break signal, and the receiver comes to perform a process of identifying the operated terminal by the test by group search. For this reason, during the terminal test, the CPU of the receiver has a problem that the processing load increases because it performs a series of interrupt processing associated with the interrupt notification, resulting in a busy state. Further, if a real fire occurs during the test, there is a problem that it takes time to judge the fire because the interruption processing for the real fire is delayed.

The present invention has been made in view of the above conventional problems, and provides a disaster prevention monitoring device and a terminal test method capable of performing a terminal test without damaging a fire judgment based on an interrupt notification on the receiving side. The purpose is to do.

[0005]

FIG. 1 is an explanatory view of the principle of the apparatus configuration of the present invention. First, according to the present invention, a plurality of terminals 2 are connected to the transmission path from the receiving means 1, and the receiving means 1 sequentially calls the terminals 2 by transmitting a calling signal by address designation and returns the terminal information to the calling control unit 3. And an interrupt processing unit 4 for receiving an interrupt signal from the terminal 2 and performing a corresponding interrupt process. The terminal 2 receives a terminal response signal when its own address matches the calling address from the receiving means 1. The present invention is directed to a disaster prevention monitoring and monitoring device which is provided with a call response unit 6 for transmitting an error and an interrupt transmitting unit for notifying the receiving unit 1 of the occurrence of an abnormality by an interrupt signal when an abnormality is detected regardless of the calling address.

According to the present invention for such a disaster prevention monitoring apparatus, the receiving means 1 transmits an interrupt prohibition command signal to the terminal to be tested prior to the transmission of the test command signal, and the terminal test is completed. Is provided with a test command section 5 for transmitting an interrupt prohibition cancellation command signal after confirmation of
Includes an interrupt control unit 8 for prohibiting the operation of the interrupt transmission unit 7 by an interrupt prohibition command signal from the test instruction unit 5 and canceling the operation prohibition of the interrupt notification unit 7 by a prohibition cancellation command signal, and a test A test control unit 9 for performing a test operation of the terminal in response to a test command signal from the instruction unit 5 is provided.

Here, the test control unit 9 of the terminal 2 stores the fire test data obtained by the operation test in the memory, and the call response unit 6 stores the fire stored in the memory in response to the call from the receiving means 1. Send test data. Further, the test instruction unit 5 of the receiving means 1 instructs the test operation by sequentially designating the terminal addresses at the time of initialization processing immediately after the power is turned on or at the time of regular inspection at regular intervals.

Further, the interrupt transmission unit 7 of the terminal transmits a break signal for invalidating the terminal response signal at the transmission timing of the terminal response signal when the abnormality is detected, and interrupts the occurrence of the abnormality in the receiving means 1. Notice. In this case, the receiving means 1
The interrupt processing unit 4 executes a process of searching for and identifying a terminal in which an abnormality has been detected, when the interruption occurrence from the terminal is received.

Here, the receiving means 1 includes only a receiver, one or a plurality of relay boards as a local receiver connected to the receiver and a transmission path from the receiver, or a plurality of relay boards mutually connected by a transmission path. Including the case where it is composed of only a relay board as a local receiver of. The present invention also includes a process of transmitting an interrupt prohibition command signal to the terminal 2 to be tested prior to the transmission of the test command signal from the receiving means 1 and an interrupt transmission operation of the terminal 2 by the interrupt prohibition command signal. A terminal test characterized by including a prohibition process, a process of transmitting an interrupt prohibition cancellation command signal after confirming the end of the terminal test, and a process of canceling the interruption prohibition of the terminal by the prohibition cancellation command signal. Provide a way.

[0010]

According to the disaster prevention monitoring apparatus of the present invention having such a configuration, the receiver side transmits the interrupt prohibition command to the terminal before the fire test, and then the test command is transmitted, and the test is executed. After the completion, it will send the interrupt prohibition cancel command. On the other hand, when the terminal receives the interrupt prohibition command, it prohibits the notification of the fire occurrence by the interrupt.
For this reason, even if a fire test is performed and a fire alarm is generated, the fire occurrence is not notified by an interrupt, and the fire test data is transmitted when a call is made by normal polling.

When the receiver receives the test data as a response to the call of the terminal, it transmits an interrupt prohibition cancel command to restore the interrupt transmission function which was prohibited during the test.
Therefore, even if the test is performed, the test fire data can be obtained by the call response, so no interrupt processing is required, and the CP on the receiver side is not required.
U will not be busy due to the test. Further, even if a fire occurs during the test, the interrupt notification of the fire occurrence is preferentially performed without being hindered by the transmission of the test data, and quick fire determination processing can be performed.

[0012]

FIG. 2 is a block diagram of an embodiment showing the overall structure of the present invention. In FIG. 2, reference numeral 10 denotes a receiver, and the sensor repeater 1 is provided on the transmission line 12 drawn from the receiver 10.
4, the analog smoke sensor 16, the analog heat sensor 18, and the control relay 20 are connected. Repeater for sensor 14
A sensor line 22 is pulled out from the sensor line 22 and the sensor line 22 is turned on / off by the detectors 24-1, 24-2, 24-3 ,.
The transmitter 26 that sends out a fire signal by operating the switch is connected. In addition, a control load 30 such as a district bell and smoke control equipment is connected to a control line 28 from the control repeater 20.

On the other hand, the receiver 10 is provided with a control unit 32 using a CPU, and the control unit 32 has a display unit 34,
Operation unit 36, ringing unit 3 for outputting an alarm or a voice message
8 are provided. The control unit 32 of the receiver 10 is provided with a call control unit 3, an interrupt processing unit 4, and a test command unit 5 which are realized by program control of the CPU. Corresponding to this, a call response unit 6, an interrupt transmission unit 7, an interrupt control unit 8 and a test control unit 9 are provided on the terminal side as represented by the sensor repeater 14.

The call control unit 3 of the receiver 10 sets a series of terminal addresses for each terminal.
127 addresses of ~ 127 are used. The call control unit 3 of the receiver 10 uses the call signal including the terminal address and the call command to sequentially call the terminals at regular intervals,
Polling is performed to send terminal information as a response.

The call signal from the call control unit 3 of the receiver 10 is received by the call response unit 6 on the terminal side, and when a match between the call address included in the received signal and its own terminal address is obtained, At that time, the terminal information held in the memory is transmitted to the receiver 10 as a terminal response signal. FIG. 4 is a time chart showing a calling operation by normal polling performed between the receiver 10 and the terminal side of FIG. In FIG. 3, the receiver 10 sequentially transmits a calling signal including a calling command C1 and a terminal address Ai (where i = 1 to 127). As shown in FIG. 4, the calling signal is composed of an 8-bit command field, an 8-bit address field, and an 8-bit checksum field, which are three bytes.

FIG. 5 shows the transmission format of the response signal from the terminal, which has an 8-bit data field and an 8-bit data field.
It is composed of 2 bytes of a checksum field of bits, and a start bit, a parity bit and a stop bit are provided before and after each byte. Of course, the transmission format of the calling signal from the receiver and the response signal from the terminal used in the present invention can be appropriately configured as needed.

Referring again to FIG. 2, in this embodiment, the call control unit 3 of the receiver 10 sends a detection signal to all terminals during a call in which a terminal address is designated, regardless of the terminal address. A sampling command (collective AD conversion command) is transmitted, for example, at a constant cycle of every one second in order to instruct a collective information collection process for sampling by AD conversion and holding it in the memory at the same time.

When the call response unit 6 on the terminal side discriminates the sampling command of the command field regardless of the address, the detection signal of the detector connected to the terminal is collected by AD conversion and stored in the memory. The terminal data collectively collected based on such a sampling command is sent back to the receiver 10 as the terminal information of the response signal to the calling signal designating the terminal address. It should be noted that the present invention is not limited to the collective collection of the detection signals on the terminal side by the sampling command, and the detection signal when the calling signal is received may be returned in real time as the terminal information.

The interrupt transmitter 7 provided on the terminal side is a receiver 10
When a fire, for example, is detected from the detection data when the detection signal is sampled by AD conversion based on the sampling command from the call control unit 3, an interrupt signal that immediately notifies the receiver 10 of the fire occurrence is transmitted. The transmission of the interrupt signal by the interrupt transmission unit 7 is performed by transmitting a break signal that destroys the response signal transmitted from one of the terminals at the response timing of the terminal call signal by the call control unit 3 of the receiver 10. Be seen.

Here, the ringing signal from the receiver 10 to the terminal 14 is sent in the voltage mode, while the response signal from the terminal to the receiver 10 is sent in the current mode. Therefore, the interrupt transmitter 7 sends a break signal, which destroys the response signal transmitted from one of the terminals, at the timing of the terminal response signal to the transmission line 12 as a current signal. The controller 3 of the receiver 10 corresponding to the interrupt transmitter 7 on the terminal side.
An interrupt processing unit 4 is provided at 2. At the timing of the terminal response signal, the interrupt processing unit 4 determines that an interrupt signal from the terminal has been received when a peculiar signal that cannot be obtained by the normal terminal response signal, for example, all 1 is received. When the interrupt processing unit 4 determines that an interrupt signal is received from the terminal, it causes the call control unit 3 to transmit an interrupt confirmation request command in order to obtain details of the interrupt cause.

In response to this interrupt confirmation request command, the call response unit 6 on the terminal side sends back detailed interrupt information. The interrupt processing unit 4, which has obtained the detailed interrupt information by using the call control unit 3,
Start a group search to identify the terminal that sent the interrupt signal. In this group search, the terminal address is divided into a predetermined number of groups, a search command is issued for each group, the group including the terminal is detected when a fire is detected, and if the group can be specified, the terminals in the group are sequentially searched. Call to identify the terminal that caused the fire. Alternatively, the group search may be performed by a dichotomy method or the like.

FIG. 6 shows the interrupt transmitting unit 7 and the receiver 10 on the terminal side.
5 is a time chart showing a transmission operation between the interrupt processing units 4 of FIG. If a fire is detected at the terminal of address Ai, the interrupt transmitter 7 of address Ai simultaneously transmits from the terminal of address A2 at the response timing of the terminal call signal following the call signal of address A2 from the receiver 10. A current signal is output that breaks the response data to be made into break data that makes all 1s.

Therefore, the receiver 10 receives the break data which becomes all 1 at the timing of the terminal response signal from the address A2, and determines the reception of the interrupt signal. Subsequently, the receiver 10 transmits a call signal having the interrupt confirmation command C2. The terminal having the address Ai which has transmitted the interrupt signal returns the interrupt response data in response to the interrupt confirmation command C2. Receiving the interrupt response data, the receiver 10 then sequentially transmits a search command C3 and a group address G1 and a calling signal for group search.

As for the interrupt response data to the interrupt confirmation command C2 from the receiver 10, whether the cause of the interrupt is due to the fire detection output of the transmitter 26 in the case of the sensor repeater 14 or the on / off sensor 24, for example. −
Outputs information indicating whether the fire detection is 1, 24-2, ... In addition, the analog smoke sensor 16 and the analog heat sensor 18 have a function as an on / off sensor by setting the pre-alarm level and the fire level in addition to the analog data, so that the fire detection by the alarm level is performed. Send detailed information such as whether or not a fire is detected depending on the fire level.

If such detailed information on the cause of interruption is obtained, for example, a fire signal from the transmitter 26 can be surely judged to be a fire. When the fire detection of the transmitter 26 is recognized from the response data, the ringing unit 38 immediately outputs an alarm bell or an alarm message. When a fire is detected from a sensor other than the transmitter 26, a pre-alarm or the like is issued to prepare for the next original fire judgment.

The call control unit 3, the interrupt processing unit 4, the call response unit 6 and the interrupt transmission unit 7 on the terminal side of the receiver 10 as described above.
The processing function according to the present invention will be described in detail in Japanese Patent Application No. 3-214882. Further, according to the present invention, the control unit 32 of the receiver 10 is provided with the test command unit 5, and the terminal side is provided with the interrupt control unit 8 and the test control unit 9. The test command unit 5 provided in the control unit 32 of the receiver 10 transmits an interrupt prohibition command prior to the transmission of the test command to the terminal, and also transmits an interrupt prohibition cancellation command when the terminal side test end is confirmed. . When receiving the interrupt prohibition command from the receiver 10, the interrupt control unit 8 on the terminal side prohibits the interrupt signal transmission function of the interrupt transmission unit 7.

When an interrupt prohibition cancel command is received,
The interrupt signal transmission function of the interrupt transmission unit 7 in the prohibited state is restored. Therefore, even if the test control unit 9 of the terminal performs the test operation of the detector by the test command from the receiver 10 and the pseudo fire detection signal is obtained, the interrupt transmission unit 7 outputs the interrupt signal by the break signal. It does not transmit the embedded signal.

The test data obtained by the test operation is AD-converted based on the sampling command from the call control unit 3 of the receiver 10 and stored and held in the memory.
It is transmitted to the receiver 10 as terminal response data to the calling signal by polling from, and the test command unit 5 confirms whether the test operation has been performed. If the test operation is not performed, the test command unit 5 displays the terminal failure on the display unit 34.

When the test data is obtained from the terminal by a normal call, the test command section 5 judges that the terminal test is completed, and specifies the terminal address to send the test recovery command and the interrupt prohibition cancel command. become. The test operation by the test control unit 9 provided on the terminal side is performed by the sensor repeater 14, the analog smoke sensor 16, and the analog heat sensor 1.
8 specific processing operations are performed. The control relay 20 is excluded from the test target.

FIG. 7 is a circuit block diagram showing an embodiment of the detector repeater 14 used in the on / off detector and the fire transmitter shown in FIG. In FIG. 7, the repeater 14 is provided with a control circuit 42 including a CPU 44, a memory 46, and an AD converter 48. The CPU 44 is provided with a transmission / reception circuit 50 having a transmission indicator 52 and an address setting circuit 54 having an address setting switch 56.

The CPU 44 realizes the functions of the call response unit 6, the interrupt transmission unit 7, the interrupt control unit 8 and the test control unit 9 shown in FIG. The AD converter 48 has input ports 1 to n, and on / off sensors 24-1 to 24-2 corresponding to the respective ports.
4- (n-1) and the transmitter 26 are connected. For these detectors, the fire disconnection detection circuit 64-
1 to 64-n and test circuits 66-1 to 66-n are provided.

The fire disconnection detection circuit 64-1 is a constant voltage circuit 6
DC 24V from 0 is received in a steady state, and the CPU 44 operates the booster circuit 62 at the timing of receiving the sampling command from the receiver 10 to receive the boosted voltage DC 35V. The on / off sensor is, for example, the on / off sensor 24-
As shown in FIG. 1, an alarm indicator lamp 68, resistors R1 and R2, and a sensor contact 70 are provided.

Further, the terminator 72 is connected to the zener diode ZD2, the terminating resistor R0 and the zener diode ZD3.
Are connected in series. Zener diodes ZD2 and ZD3
Either is effective depending on the connection polarity. The Zener diode ZD2 is non-conductive in the supply state of DC20V, and becomes conductive when receiving the boosted voltage DC35V from the booster circuit 62, and produces a disconnection monitoring voltage depending on the terminator 72.

FIG. 8 is a circuit diagram showing an equivalent circuit of the fire disconnection detection circuit together with an on / off sensor. In FIG.
The fire disconnection detection circuit 64 causes the constant current source 82 to supply a constant current to the on / off sensor 24 while the boosted voltage DC35V of the booster circuit 62 operated by the sampling command from the receiver is supplied. The internal impedance of the on-off sensor 24 is shown as R12 and the line resistance is shown as Rz.

When there is no disconnection and the sensor contact 70 is open, the Zener diode ZD2 becomes conductive, and a line-to-line voltage that is determined by the terminator 72 and falls within the normal detection region shown in FIG. 9 is obtained. The divided voltage of the resistors R5 and R6 is output to the AD converter 48. Further, when the detector contact 70 is closed by the fire detection, the line voltage depends on the detector impedance R12, and becomes a voltage within the range of the fire detection area shown in FIG. 9, for example.

For turning on / off, the internal impedance R12 is determined so as to be, for example, the detection voltage V1. On the other hand, the internal impedance of the transmitter 26 is determined so that the detection voltage V2 is higher. Therefore, it is possible to distinguish between the fire detection by the on / off sensor and the fire detection by the transmitter by the detection voltage in the fire detection area. Furthermore, if there is a disconnection, the boost voltage is DC35V.
Is obtained as it is, the disconnection detection region having the upper limit of 35 V shown in FIG. 9 is set.

Referring again to FIG. 7, the transmitter 26 provided corresponding to the port n of the AD converter 48 has the switch contact 7
6, a switch contact 78 for confirmation display is provided in addition to the terminator 72, and a circuit of a confirmation indicator lamp 74 and resistors R3 and R4 is connected to the switch contact 78. To the confirmation indicator lamp 74 side, a confirmation signal line is connected from the receiver 10 side via the terminal AA of the sensor repeater 14. When the receiver 10 receives a fire detection signal from the transmitter 26 at the terminal AA, a signal voltage is applied as a confirmation response signal, which causes the confirmation indicator lamp 74 to light.

The constant voltage circuit 58 supplies DC 3.2V to the control circuit section 42. Further, a power supply line from the receiver 10 is connected to the constant voltage circuit 60 through a terminal V, a signal line from the receiver 10 is connected to the constant voltage circuit 58 through a terminal S, and a reception signal is received at a terminal SC. The common line from machine 10 is connected. Further, diodes D1 and D2 and zener diodes ZD1 and ZD2 for absorbing noise are provided following the terminals V and S, respectively.

The test circuits 66-1 to 66-n provided in the sensor repeater 14 operate simultaneously when the CPU 44 receives the test command from the receiver 10, and the sensor of FIG. Or the test voltage V corresponding to the transmitter
Connect the test resistors so that 1 and V2 are obtained. Also,
The operating states of the test circuits 66-1 to 66-n are continued until the test recovery command is received, during which the AD conversion unit 48 performs AD conversion of the detected voltage based on the sampling command, and the obtained test data is obtained. It is stored in the memory 46.

Further, the sensor repeater 14 is provided with a control voltage monitoring circuit 80. When an abnormality in the boosted voltage of the booster circuit 62 is detected, the voltage failure information is held in the memory 46 via the CPU 44, The terminal response signal to the call is sent back including the power failure bit. FIG. 10 is a block diagram showing an embodiment of the analog smoke detector 16 of FIG. In FIG. 10, the analog heat sensor 16 includes a sensor body 16a and a sensor base 16b.
A warning indicator lamp circuit 108 is provided on the sensor base 16b, and the signal lines from the receiver 10 are connected to the terminals S and SC. The sensor main body 16a is provided with a noise absorption circuit 86 and a transmission signal detection circuit 88 following the rectification circuit 84 for making the connection polarity non-polar.

The transmission signal detection circuit 88 detects the ringing signal from the receiver 10 in the voltage mode and detects the transmission control circuit 92.
Supply to. A CPU is provided in the transmission control circuit 92,
As in the case of the sensor repeater 14 of FIG. 2, the functions of the call response unit 6, the interrupt transmission unit 7, the interrupt control unit 8, and the test control unit 9 are realized. A type / address setting circuit 94 is provided for the transmission control circuit 92.

The smoke detector is composed of an LED drive circuit 96 and an infrared LE.
It is composed of a D98, a light receiving circuit 100 and an amplifier circuit 102. The infrared LED 98 and the light receiving element of the light receiving circuit 100 are arranged by, for example, a scattered light type smoke detection structure. Further, a test LED 106 is provided, and the light receiving element of the light receiving circuit 100 is directly irradiated with light corresponding to a predetermined smoke concentration to perform a test operation.

The transmission signal from the transmission control circuit 92 is given to the response signal output circuit 104, and the normal response signal is transmitted to the receiver 10 side in the current mode. As for the interrupt signal based on fire detection, a break current signal that outputs a response signal of all 1s on the receiver side is output. When the transmission control circuit 92 receives the sampling command from the receiver 10, the LED drive circuit 96 drives the infrared LED 98 to emit light, and the received light signals obtained by the light receiving circuit 100 and the amplifying circuit 102 are AD-converted and stored in the memory. To do.

The analog detection data stored and held in the memory is included in the data field of the response signal and transmitted when the address match of the calling signal from the receiver 10 is obtained. When the test command is received from the receiver 10, the LED drive circuit 96 drives the test LED 106. The light receiving circuit 10 is driven by driving the test LED 106 to emit light.
0 and the detection signal obtained by the amplifier circuit 102 are stored and held in the memory as test data by AD conversion based on the sampling command, and are transmitted to the receiver by including the self address in the terminal response signal to the calling signal with the designated self address.

Further, when the transmission control circuit 92 judges a fire from the analog detection data sampled by AD conversion, the response signal output circuit 104 sends a break current signal to send an interrupt signal to the receiver 10. To do. This interrupt signal transmission function sends an interrupt disable command prior to the test command during the sensor test operation, so that the analog detection data obtained by AD conversion in the sensor test indicates the fire level. Even if it exceeds the limit, the interrupt signal is not transmitted. Further, when the sensor test operation is completed, the test operation is stopped in response to the test recovery command from the receiver 10, and subsequently the interrupt signal transmission function is restored in response to the interrupt prohibition cancel command.

FIG. 11 is a block diagram showing an embodiment of the analog heat sensor of FIG. In FIG. 11, the analog heat sensor has a signal line from the receiver 10 connected between terminals S and SC, followed by a non-polarity circuit 110, a noise absorption circuit 112, a constant voltage circuit 114 for outputting DC13V, and a current. Limiting circuit 116, constant voltage circuit 1 that outputs DC10V
18 are provided. Then, a constant current circuit 1 as a heat detector.
20, a heat detection element 122 using a thermistor and the like and a fire test circuit 124 are provided.

On the other hand, a ringing signal circuit 126 is provided for the branch line to the noise absorbing circuit 112, and a ringing signal in the voltage mode from the receiver 10 is detected and supplied to the transmission control circuit 130. A CPU is provided in the transmission control circuit 130, and each function of the call response unit 6, the interrupt transmission unit 7, the interrupt control unit 8, and the test control unit 9 is provided as in the sensor repeater 14 of FIG. To be

For the transmission control circuit 130, the oscillation circuit 1
32, an address / type setting circuit 134, and a reset circuit 136 for performing a power-on reset are provided. Also,
For the control circuit 130 and thereafter, the constant voltage circuit 128 outputs D
The power supply of C3.2V is performed. Transmission control circuit 130
The transmission signal from is given to the response signal circuit 138 and is transmitted to the receiver 10 side in the current mode. Further, the response signal circuit 138 is provided with an operation indicator lamp 140 which blinks according to bit 1.0 of the response signal.

Upon receiving the sampling command from the receiver 10, the transmission control circuit 130 operates the constant current circuit 120 to cause a constant current to flow through the heat detecting element 122, and the heat detecting element 1
Since the impedance of 22 is determined by the ambient temperature, the detected voltage depending on the ambient temperature is sampled by AD conversion and stored in the memory. The detection data stored in the memory is transmitted to the receiver 10 by a response signal to the calling signal designating its own address.

Further, when the transmission control circuit 130 receives the test command from the receiver 10, it operates the fire test circuit 124 to perform the test operation. At this time, the constant current circuit 120 is also operated at the same time. The fire test circuit 124 creates an impedance state at a test temperature of 100 ° C. as a connection load of the constant current circuit 120 by a test operation. Therefore, the detection voltage corresponding to the test temperature of 100 ° C. is input to the transmission control circuit 130, and is stored and held in the memory by AD conversion based on the sampling command.

At this time, the detected voltage at the test temperature of 100 ° C. naturally exceeds the fire level. Therefore, the transmission control circuit 130 originally uses the response signal circuit 138 to send a break current to generate an interrupt signal. To send. However, in the present invention, since the interrupt prohibition command is sent from the receiver 10 prior to the test command,
Since the fire test provides detection data of 100 ° C., the interrupt signal is not transmitted and the test data is stored in the memory.

After that, it is transmitted to the receiver 10 as response data to the calling signal designating its own address. When the test operation is completed, the test operation is stopped by the test recovery command, and the interrupt signal transmission function based on the fire detection is restored by the interrupt prohibition cancel command. FIG. 12 shows the control unit 32 of the receiver 10 shown in FIG.
5 is a flowchart showing a processing operation by 12
When the power of the receiver 10 is turned on in step S
Initial setting is performed at 1. Then, in step S2, the terminal address n is set to the first n = 1. Then, in step S3, it is checked whether the operation test is performed. In this embodiment, the operation test of the terminal is carried out at power-on start, at regular intervals, for example, a regular test once a day, or an operation test by designating a terminal address during maintenance and inspection.

Since it is not a normal operation test, step S
4, the polling is performed by transmitting a calling signal designating the address n = 1. Then, in step S5, the response signal from the terminal is received, and it is checked from the data field of the response signal in step S6 whether or not the state has changed. If there is a state change, the process proceeds to step S7, and after checking whether the operation test is being performed or not, in step S8, a corresponding process according to the content of the state change is performed.

This response processing includes various response processing such as fire processing and failure processing. Then, in step S9, for example, it is checked whether or not the sampling timing has reached every one second, and if the sampling timing has been reached, a sampling command is issued in step S10, and terminal information by AD conversion is collectively issued to all terminals. Command the collection process of.

Subsequently, in step S11, it is checked whether or not it is the final terminal address. If it is not the final terminal address, the terminal address is incremented by 1 in step S22, and similar processing is repeated. If it is the final terminal address in step S11, the process returns to step S2 and the polling from the first terminal address is repeated. Then step S
When the operation test is determined in 3, the process proceeds to step S12, and an interrupt prohibition command is issued to the test terminal. Since the response signal is returned when the interrupt prohibition command is received by the terminal side, the response reception is confirmed in step S13, and subsequently, the confirmation command (ACK command) for the response is transmitted in step S14. This completes the interrupt prohibition command transmission process.

Next, in step S15, a test command is transmitted. Regarding the test command, the confirmation command of step S16 is issued based on the reception confirmation of the terminal response of step S16. Collection of test data after transmitting the test command is performed through a normal polling process. That is,
After transmitting the test command, the process proceeds to step S4 to perform normal polling, and if it is determined that there is a state change in step S6 from the reception of the response signal in step S5, it is checked in step S7 whether the operation test is being performed.

If an operation test is in progress, it is determined in step S18 whether or not the test operation is normal. If a normal test operation is performed, a test end command is transmitted in step S20, and then step S21. Send an interrupt prohibition cancel command with. Regarding the transmission of the test end command and the interrupt prohibition cancel command, as in the case of the interrupt prohibition command and the test command, the confirmation command is issued in response to the response received from the terminal, but this is omitted in the flowchart.

If the test operation is not normally performed in step S18, the process proceeds to step S19, and the failure occurrence is displayed by the terminal failure processing. It should be noted that the terminal determined to be defective may be excluded from the polling target until repair or replacement is completed. FIG. 13 is a flowchart showing the processing operation on the terminal side. In FIG.
When the power is turned on, initialization is performed in step S1, and the presence or absence of signal reception is monitored in step S2. When a signal is received, it is checked in step S3 whether it is a sampling command. If it is not a sampling command, the address matching is checked in step S4.

When an address match is obtained, it is checked in step S5 whether it is a polling command. If it is a polling command at the time of normal calling, the data held in the memory by sampling is transmitted in step S6.
If the command is an interrupt prohibition command in step S7, the flow advances to step S8 to set the interrupt prohibition flag FL to FL = 1 to prohibit the interrupt transmission function.

When the interrupt prohibition cancel command is discriminated in step S9, the interrupt prohibition flag is set to FL = 0 in step S10.
Reset to. When the test command is determined in step S11, an operation test of the terminal is performed in step S12. If the command is the test end command in step S13, the test operation is ended in step S14. On the other hand, when the sampling command is determined in step S3, step S
In step 15, the detection signal is sampled by AD conversion and stored in the memory. Subsequently, in step S16, it is determined whether or not a fire is detected from the sampling data. If a fire is detected, the interrupt prohibition flag FL is checked in step S17. If the interrupt prohibition flag is FL = 0 and the reset state is set, the process proceeds to step S18. Proceed and send an interrupt signal.

At this time, if a fire is detected by the operation test, since the interrupt prohibition flag is set to FL = 1 by the interrupt prohibition command prior to the test command,
The interrupt signal in step S16 is not transmitted. FIG. 14 is a time chart showing the exchange of signals in the operation test between the receiver 10 of the present invention and a specific terminal. In FIG. 14, in the operation test of the terminal, the receiver 10 first issues an interrupt prohibition command, and when a reception response is obtained from the terminal, issues an ACK command (confirmation command). No terminal response is made to this ACK command. Then, the test command is issued. Since the terminal also returns a reception response to the test command 3, the ACK command is issued by.

If a sampling command is subsequently issued, the terminal side performs sampling by AD conversion, and since the terminal side is in the test operation state by the test command at this time, the detection signal by the test operation is A
It is sampled by D conversion and stored and held in the memory. After that, the receiver 10 issues a polling command for the terminal address tested by, and upon receiving the polling command, the terminal transmits the test data held in the memory as a response signal.

When the test end is confirmed on the basis of this test data, the receiver 10 transmits a test end command at, the test recovery is ended via the reception response and the ACK command, and finally the interrupt is prohibited. A cancel command is transmitted, an interrupt prohibition operation is performed via a reception response and an ACK command, and this completes a series of test operations. still,
In the above embodiment, a break signal that destroys the terminal transmission data is transmitted as the interrupt signal based on the fire detection in the terminal at the response timing of the call signal from the receiver, and the receiver side judges that the interrupt signal is received. However, the transmission of the interrupt signal from the terminal is not limited to the break signal, and an appropriate interrupt code signal may be used. Further, in the above embodiment, the interrupt confirmation call is made following the interrupt signal and the detailed interrupt information is returned, but when the detailed information is included in the first interrupt code signal, the interrupt confirmation call is made. Is unnecessary.

Further, although the above-mentioned embodiment takes as an example the case where only the receiver 10 is provided as the receiving means 1 in the principle explanatory diagram of FIG. 1, the receiving means 1 has a receiver and a transmission line from the receiver. A configuration in which a relay board that functions as a local receiver is connected and the terminal is connected to the transmission path from the relay board, or only the relay board as the local receiver is connected with multiple transmission paths and the terminal is connected to the transmission path from each relay board. It is also possible to directly apply any of the configurations of connecting the.

[0065]

As described above, according to the present invention, since interrupt transmission is prohibited during the terminal test, even if a fire occurs during the test, the fire is prioritized by transmitting the interrupt signal due to the fire. Can be processed as desired. In addition, since the fire test data from the terminal test is sent from the terminal to the receiver by normal calling processing without interruption, the processing load on the receiver control unit does not increase due to the terminal test, and it is sufficient for abnormality monitoring such as fire. It is possible to exert various processing capabilities.

[Brief description of drawings]

FIG. 1 is an explanatory view of the principle of the present invention.

FIG. 2 is an explanatory diagram showing the overall configuration of the present invention.

FIG. 3 is a time chart showing the polling of the present invention.

FIG. 4 is an explanatory diagram of a transmission format of a calling signal from a receiver.

FIG. 5 is an explanatory diagram of a transmission format of a response signal from the terminal.

FIG. 6 is a time chart showing an interrupt notification of an abnormal occurrence due to transmission of a break signal.

FIG. 7 is a configuration diagram of an embodiment of the sensor repeater of FIG.

FIG. 8 is a circuit diagram showing an equivalent circuit at the time of fire detection in FIG.

FIG. 9 is an explanatory diagram showing detection areas for fire, normality, and disconnection in FIG.

10 is a block diagram illustrating an embodiment of the analog smoke detector of FIG.

FIG. 11 is a block diagram showing an embodiment of the analog heat sensor of FIG.

FIG. 12 is a flowchart showing a processing operation on the receiver side in FIG.

FIG. 13 is a flowchart showing a processing operation on the terminal side of FIG.

FIG. 14 is a time chart showing the processing operation between the receiver and the terminal.

[Explanation of symbols]

 1: Receiving means 2: Terminal 3: Call control unit 4: Interrupt processing unit 5: Test command unit 6: Call response unit 7: Interrupt transmission unit 8: Interrupt control unit 9: Test control unit 10: Receiver 12 : Transmission line 14: Sensor repeater 16: Analog smoke detector 16a: Sensor main body 16b: Sensor base 18: Analog heat sensor 20: Control repeater 22: Sensor line 24-1, 24-2: ON / OFF sensor 26: transmitter 28: control line 30: control load 32: control unit 34: display unit 36: operation unit 38: ringing unit 42: control circuit 44: CPU 46: memory 48: AD conversion unit 50: transmission / reception circuit 52: Transmission indicator 54: Address setting circuit 56: Address setting switch 58, 60, 114, 118, 128: Constant voltage circuit 62: Booster circuit 64-1 to 64-n: Fire breakage detection circuit 66-1 to 6 6-n: Test circuit 68: Warning indicator light 70: Sensor contact 72: Terminator 74: Confirmation response indicator light 76, 78: Switch contact 80: Control voltage monitor circuit 82: Constant current source 84: Rectifier circuit 86: Noise absorption circuit 88: Transmission signal detection circuit 90: Constant voltage circuit 92: Transmission control circuit 94, 134: Address / type setting circuit 96: LED drive circuit 100: Light receiving circuit 102: Amplification circuit 104: Response signal output circuit 106: Test LED 110: Non-polar circuit 112: Noise absorption circuit 116: Current limiting circuit 120: Constant current circuit 122: Heat detection element (thermistor) 124: Fire test circuit 126: Ring signal circuit 130: Transmission control circuit 132: Oscillation circuit 136: Reset circuit 139: Operation indicator light

Claims (7)

[Claims] 1. A call control unit for connecting a plurality of terminals to a transmission line from a receiving unit, wherein the receiving unit includes a call control unit for sequentially calling the terminals by sending a calling signal by address specification and returning terminal information. An interrupt processing unit that receives the interrupt signal and performs a corresponding process, and the terminal includes a call response unit that transmits a terminal response signal when its own address matches the call address from the receiving unit. In a disaster prevention monitoring device provided with an interrupt transmission unit that informs the receiving means of the occurrence of an abnormality by an interrupt signal regardless of the calling address when an abnormality is detected, in the receiving means, prior to the transmission of the test command signal, A test command section for transmitting an interrupt prohibition command signal to the terminal to be tested and transmitting an interrupt prohibition cancellation command signal after confirming the test completion of the terminal. The operation of the interrupt transmission unit is prohibited by an interrupt prohibition command signal, and the operation prohibition of the interrupt notification unit is canceled by a prohibition cancellation command signal, and a terminal is generated by a test command signal from the test command unit. The disaster prevention monitoring device, which is provided with a test control unit for performing the test operation of. 2. The disaster prevention monitoring device according to claim 1, wherein the test control unit of the terminal stores the fire test data obtained in the operation test in the memory, and the call response unit calls from the receiving means. The fire prevention monitoring device is characterized in that the fire test data stored in the memory is transmitted to the disaster prevention monitoring device. 3. The disaster prevention monitoring device according to claim 1, wherein the test command unit of the receiver sequentially specifies a terminal address during initialization processing immediately after power is turned on and during regular inspection at regular intervals. Disaster prevention monitoring device characterized by instructing test operation. 4. The disaster prevention monitoring device according to claim 1, wherein the interrupt transmission unit of the terminal invalidates the terminal response signal at the transmission timing of the terminal response signal when an abnormality is detected. A disaster prevention monitoring device characterized by transmitting a message to notify the receiving means of an abnormality occurrence by interruption. 5. The disaster prevention monitoring apparatus according to claim 1, wherein the interrupt processing unit of the receiving means, upon receiving an interrupt signal from the terminal, searches for and identifies a terminal that has detected an abnormality. Disaster prevention monitoring device characterized by performing a search process. 6. The disaster prevention monitoring device according to claim 1, wherein the receiving means is a receiver only, or one or a plurality of receivers and a local receiver connected to a transmission path from the receiver. The disaster prevention monitoring device is characterized in that it is configured only by the relay board or the relay board as a plurality of local receivers connected to each other by a transmission path. 7. A call control section for connecting a plurality of terminals to a transmission line from the receiving means, wherein the receiving means includes a calling control section for sequentially calling the terminals by sending a calling signal by addressing and returning terminal information. Is provided with an interrupt processing unit that performs corresponding processing upon receipt of the notification of the occurrence of the interrupt, and transmits a terminal response signal to the terminal when the matching verification between the calling address and the self address from the receiving means is obtained. In a disaster prevention monitoring device provided with a call response unit for interrupting, and an interrupt transmission unit for notifying the receiving unit of the occurrence of an abnormality by interrupt regardless of the calling address when an abnormality is detected, a test command signal from the receiving unit Process of transmitting an interrupt prohibition command signal to the terminal to be tested prior to the transmission of, the process of prohibiting the interrupt transmission operation of the terminal by the interrupt prohibition command signal, and after confirming the end of the test of the terminal. Terminal test method and transmitting the interrupt prohibition cancellation command signal, the method comprising releasing the interruption inhibit terminal by the prohibition cancellation command signal, comprising the.