CN115576306A

CN115576306A - Detection method of fire extinguishing and explosion suppression control box

Info

Publication number: CN115576306A
Application number: CN202211235456.7A
Authority: CN
Inventors: 薛雅心; 桂坚斌; 陈自健; 袁琪; 马洪刚; 王逸鸣
Original assignee: Shanghai Electric Control Research Institute China South Industries Group Co ltd
Current assignee: Shanghai Electric Control Research Institute China South Industries Group Co ltd
Priority date: 2022-10-10
Filing date: 2022-10-10
Publication date: 2023-01-06

Abstract

The invention relates to a detection method of a fire extinguishing and explosion suppression control box, belongs to the technical field of fire extinguishing and explosion suppression, and solves the problems of missed detection and erroneous judgment of manual detection of the fire extinguishing and explosion suppression control box in the prior art. The detection method comprises the following steps: sequentially detecting whether working condition change-over switch circuits corresponding to all cabins monitored by the fire extinguishing and explosion suppression control box are normal or not; the working condition switching instruction that each cabin corresponds is sent to the explosion suppression control box of putting out a fire in proper order, carries out following detection to the explosion suppression control box of putting out a fire under the different working condition state in each cabin: sending simulated fire alarm information to the fire extinguishing explosion suppression control box; receiving CAN frame information sent by the fire extinguishing explosion suppression control box through a CAN communication interface and analyzing the CAN frame information to obtain CAN parameter information; receiving voltage information sent by the fire extinguishing and explosion suppression control box through a voltage control signal output interface; and determining the fault point of the fire extinguishing and explosion suppression control box according to the CAN parameter information and the voltage information. The automatic detection of each fault point of the fire extinguishing and explosion suppression control box is realized.

Description

Detection method of fire extinguishing and explosion suppression control box

Technical Field

The invention relates to the technical field of fire extinguishing and explosion suppression, in particular to a detection method of a fire extinguishing and explosion suppression control box.

Background

Along with social and economic development, the fire and explosion safety hidden dangers of fires, explosions and the like in the flammable and explosive industry are obvious, casualties and property loss are serious, and air pollution and environmental destruction are caused by partial accidents to cause ecological imbalance, so that the fire extinguishing and explosion suppression control box has a very wide application space.

In the prior art, when a fire extinguishing and explosion suppression control box has a fault, potential fault points are generally checked and tested one by one manually according to experience, and the whole fire extinguishing and explosion suppression system is usually accessed in the testing process to detect for multiple times so as to locate the fault points.

However, the manual detection has the following disadvantages:

1. some hidden dangers may be missed by detecting a certain fault;

2. the situation that the result is not misjudged due to the error of the checking process may exist;

3. detect too troublesome with whole explosion suppression system of putting out a fire together, parts, cable are many and mixed and disorderly, can influence detection personnel's operation.

Disclosure of Invention

In view of the above analysis, the embodiment of the present invention aims to provide a method for detecting an explosion suppression fire suppression control box, so as to solve the problems of missed detection and erroneous judgment of manual detection of the explosion suppression fire suppression control box in the prior art.

The embodiment of the invention provides a detection method of a fire extinguishing and explosion suppression control box, which comprises the following steps:

sequentially detecting whether working condition change-over switch circuits corresponding to all cabins monitored by the fire extinguishing and explosion suppression control box are normal or not; if the working condition change-over switch circuit corresponding to a certain cabin is abnormal, outputting the fault information of the working condition change-over switch circuit corresponding to the cabin, and continuously carrying out subsequent detection after overhauling the working condition change-over switch circuit corresponding to the cabin;

sequentially sending working condition switching instructions corresponding to all cabins to the fire extinguishing and explosion suppression control box, and controlling all cabins to be in different working condition states through working condition switching circuits corresponding to all cabins;

the following detection is carried out on the fire extinguishing and explosion suppression control box under different working conditions of each cabin:

sending simulated fire alarm information to a fire extinguishing explosion suppression control box;

receiving CAN frame information sent by a fire extinguishing explosion suppression control box through a CAN communication interface and analyzing the CAN frame information to obtain CAN parameter information; receiving voltage information sent by the fire extinguishing and explosion suppression control box through a voltage control signal output interface;

and determining a fault point of the fire extinguishing and explosion suppression control box according to the CAN parameter information and the voltage information.

Based on the further improvement of the detection method, each cabin comprises a passenger cabin, a power cabin and a bottom cabin, wherein the passenger cabin comprises two working condition states of wartime and peacetime, the power cabin comprises two working condition states of automatic and semi-automatic, and the bottom cabin comprises two working condition states of automatic and semi-automatic.

Based on the further improvement of the detection method, before sequentially detecting whether the working condition change-over switch circuit corresponding to each cabin monitored by the fire extinguishing and explosion suppression control box is normal, the detection method further comprises the following steps:

connecting a CAN communication transceiver module in a detection system with the CAN communication interface of the fire-extinguishing explosion-suppression control box, wherein the CAN communication transceiver module sends any CAN instruction information to the CAN communication interface, if the CAN communication transceiver module CAN receive CAN frame information returned by the CAN communication interface, the CAN communication interface is normal, otherwise, the CAN communication transceiver module outputs information of CAN communication interface faults, and continues to perform subsequent detection after the CAN communication interface is overhauled.

Based on a further improvement of the above detection method, the CAN parameter information includes one or more of the following items:

internal numbering information of the control box;

alarm information of the passenger compartment;

alarm information of the power compartment;

alarm information of the bottom cabin;

working condition state information of the passenger compartment;

working condition state information of the power compartment;

and (4) working condition state information of the bottom cabin.

Based on the further improvement of the detection method, when detection is carried out under different working condition states of the passenger compartment, the simulated fire alarm information is passenger compartment CAN fire alarm instruction information;

the determining of the fault point of the fire extinguishing and explosion suppression control box according to the CAN parameter information and the voltage information comprises the following steps:

if the CAN parameter information does not comprise the alarming information of the passenger cabin, outputting the information of the fault of a CAN fire alarming information input circuit corresponding to the passenger cabin;

comparing the voltage information with a normal standard driving index of the fire extinguishing explosion suppression control box, and if the difference value of the voltage information and the normal standard driving index exceeds a threshold range, outputting the information of the voltage control signal corresponding to the voltage information and outputting the circuit fault information;

when the detection is carried out under different working condition states of the power cabin, the simulated fire alarm information is power cabin CAN fire alarm instruction information;

if the CAN parameter information does not include the alarming information of the power cabin, outputting the information of the CAN fire alarming information input circuit fault corresponding to the power cabin;

and comparing the voltage information with the normal standard driving index of the fire extinguishing explosion suppression control box, and if the difference value between the voltage information and the normal standard driving index exceeds the threshold range, outputting the information of the voltage control signal output circuit fault corresponding to the voltage information.

Based on the further improvement of the detection method, when detection is carried out under different working conditions of the bottom cabin, the simulated fire alarm information is a simulated thermocouple signal, and the simulated thermocouple signal is sent to a thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box through a simulated thermocouple output circuit of the detection system;

if the CAN parameter information does not include the alarm information of the bottom cabin, outputting the information of the thermocouple voltage signal input circuit fault corresponding to the bottom cabin;

Based on the further improvement of the detection method, the analog thermocouple output circuit comprises a first phase inverter, a first resistor, a first power tube, a first diode, a first electromagnetic relay and a current-limiting resistor;

the INPUT end of the first phase inverter is used for receiving a control instruction, the output end of the first phase inverter is connected with one end of a first resistor, the other end of the first resistor is connected with an INPUT port of a first power tube, a drain port of the first power tube is connected with the anode of a first diode and one end of a control coil of a first electromagnetic relay, and the cathode of the first diode is connected with a power supply and the other end of the control coil of the first electromagnetic relay;

a static contact of the first electromagnetic relay is connected with one end of the current-limiting resistor, and the other end of the current-limiting resistor is used for receiving the analog thermocouple signal; and the movable contact of the first electromagnetic relay is connected with a thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box.

Based on the further improvement of the detection method, whether the working condition change-over switch circuit corresponding to each cabin monitored by the fire extinguishing and explosion suppression control box is normal or not is detected in sequence, and the method comprises the following steps:

the working condition state transition of the working condition switch control interface corresponding to each cabin is controlled by the simulated working condition circuit of the detection system;

receiving the CAN frame information sent by the CAN communication interface, and analyzing the CAN frame information to obtain the CAN parameter information;

and comparing the working condition state information corresponding to each cabin in the CAN parameter information with the working condition state information corresponding to each cabin before the working condition state is changed, and if the two working condition state information corresponding to a certain cabin are consistent, outputting the information of the fault of the working condition change-over switch circuit corresponding to the cabin.

Based on the further improvement of the detection method, the simulated working condition circuit comprises a second inverter, a second resistor, a second power tube, a second diode and a second electromagnetic relay;

the INPUT end of the second phase inverter is used for receiving a control instruction, the output end of the second phase inverter is connected with one end of a second resistor, the other end of the second resistor is connected with an INPUT port of a second power tube, a drain port of the second power tube is connected with the anode of a second diode and one end of a control coil of a second electromagnetic relay, and the cathode of the second diode is connected with a power supply and the other end of the control coil of the second electromagnetic relay;

and a static contact of the second electromagnetic relay is grounded, and a movable contact of the second electromagnetic relay is connected with a working condition switch control interface of the fire extinguishing and explosion suppression control box.

Based on the further improvement of the detection method, the receiving of the voltage information sent by the fire extinguishing and explosion suppression control box through the voltage control signal output interface comprises the following steps:

receiving the voltage information through a partial pressure acquisition circuit of the detection system;

the voltage division acquisition circuit comprises a pull-up resistor R1, a voltage division resistor R2 and a voltage division resistor R3;

one end of the voltage division resistor R2 is connected with one end of the pull-up resistor R1, and is used as the input end of the voltage division acquisition circuit to be connected with a voltage control signal output interface of the fire extinguishing and explosion suppression control box, and the other end of the pull-up resistor R1 is connected with a pull-up power supply;

the other end of the divider resistor R2 is used as the output end of the voltage division acquisition circuit; the other end of the divider resistor R2 is also connected with one end of the divider resistor R3, and the other end of the divider resistor R3 is grounded.

Compared with the prior art, the invention can realize at least one of the following beneficial effects:

1. the invention realizes the automatic detection of each fault point of the fire extinguishing explosion suppression control box by sending the fire alarm information of each cabin to the fire extinguishing explosion suppression control box and receiving the CAN frame information and the voltage information sent by the fire extinguishing explosion suppression control box.

2. The invention can detect the fire extinguishing and explosion suppression control box in different working condition states of each cabin by sending the thermocouple voltage change curve to the fire extinguishing and explosion suppression control box and controlling the states of the working condition switches of each cabin of the fire extinguishing and explosion suppression control box, thereby realizing all-around detection.

In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The drawings, in which like reference numerals refer to like parts throughout, are for the purpose of illustrating particular embodiments only and are not to be considered limiting of the invention.

Fig. 1 is a schematic flow chart of a detection method of a fire extinguishing and explosion suppression control box according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a simulated condition circuit according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a structure of an analog thermocouple output circuit according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a voltage division acquisition circuit according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a detection system of a fire suppression and explosion suppression control box according to an embodiment of the present invention;

FIG. 6 is a second schematic structural diagram of a fire suppression and explosion suppression control box detection system according to an embodiment of the present invention;

fig. 7 is a third structural schematic diagram of a detection system of a fire extinguishing and explosion suppression control box according to an embodiment of the present invention.

Detailed Description

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.

In a first aspect, a specific embodiment of the present invention discloses a detection method for a fire extinguishing and explosion suppression control box, as shown in fig. 1, the detection method includes:

step S101: sequentially detecting whether working condition change-over switch circuits corresponding to all cabins monitored by the fire extinguishing and explosion suppression control box are normal or not; and if the working condition change-over switch circuit corresponding to a certain cabin is abnormal, outputting the information of the fault of the working condition change-over switch circuit corresponding to the cabin, and continuously carrying out subsequent detection after overhauling the working condition change-over switch circuit corresponding to the cabin.

Specifically, each cabin comprises a passenger cabin, a power cabin and a bottom cabin, wherein the passenger cabin comprises two working condition states of wartime and peacetime, the power cabin comprises two working condition states of automation and semi-automation, and the bottom cabin comprises two working condition states of automation and semi-automation.

Preferably, before step S101, the detection method further includes:

Specifically, whether the operating mode change-over switch circuit that each cabin that detects the control of explosion suppression control box of putting out a fire corresponds in proper order is normal, include:

connecting a simulated working condition circuit of the detection system with a working condition switch control interface corresponding to a cabin in the fire extinguishing and explosion suppression control box, and controlling the working condition state corresponding to the cabin to be changed through the simulated working condition circuit;

and comparing the working condition state information corresponding to the cabin in the CAN parameter information with the working condition state information corresponding to the cabin before the working condition state is changed, and if the two working condition state information corresponding to the cabin are consistent, outputting the information of the fault of the working condition change-over switch circuit corresponding to the cabin.

Specifically, the CAN parameter information includes one or more of:

internal numbering information of the control box;

alarm information of the passenger compartment;

alarm information of the power cabin;

alarm information of the bottom cabin;

operating condition state information of the passenger compartment;

working condition state information of the power compartment;

and (4) working condition state information of the bottom cabin.

Specifically, as shown in fig. 2, the simulated operating condition circuit includes a second inverter, a second resistor, a second power tube, a second diode, and a second electromagnetic relay;

Step S102: and sequentially sending working condition switching instructions corresponding to the cabins to the fire extinguishing and explosion suppression control box, and controlling the cabins to be in different working condition states through working condition switching circuits corresponding to the cabins.

The following are exemplary: the fire extinguishing and explosion suppression control box is used for monitoring three cabins, the three cabins can be a passenger cabin, a bottom cabin and a power cabin respectively, and when the fire extinguishing and explosion suppression control box needs to be detected, the working condition states corresponding to the three cabins are controlled in sequence. And after the working condition state corresponding to a certain cabin is determined, detecting the cabin in the working condition state.

When the working condition state of the passenger cabin is switched, the simulated working condition circuit of the detection system is connected with the working condition switch control interface corresponding to the passenger cabin of the fire extinguishing and explosion suppression control box, as shown in fig. 2, the movable contact of the electromagnetic relay RL2 of the simulated working condition circuit is used for being connected with the working condition switch control interface corresponding to the passenger cabin of the fire extinguishing and explosion suppression control box. Different IO1 is input into the simulation working condition circuit, and the movable contact of the electromagnetic relay RL2 can be grounded or ungrounded. Under the condition that the working condition change-over switch circuit of the passenger cabin is normal, when the movable contact of the electromagnetic relay RL is grounded, the passenger cabin of the fire extinguishing and explosion suppression control box is in a normal working condition state, and when the movable contact is not grounded, the passenger cabin of the fire extinguishing and explosion suppression control box is in a wartime working condition state. The movable contact of the electromagnetic relay RL2 is grounded or ungrounded to control a working condition switching instruction corresponding to the passenger compartment.

Step S103: the fire extinguishing and explosion suppression control box is detected in different working condition states of each cabin as follows: sending simulated fire alarm information to a fire extinguishing explosion suppression control box; receiving CAN frame information sent by a fire extinguishing explosion suppression control box through a CAN communication interface and analyzing the CAN frame information to obtain CAN parameter information; receiving voltage information sent by the fire extinguishing and explosion suppression control box through a voltage control signal output interface; and determining a fault point of the fire extinguishing and explosion suppression control box according to the CAN parameter information and the voltage information.

Preferably, when the detection is performed in different working condition states of the passenger compartment, the simulated fire alarm information is passenger compartment CAN fire alarm instruction information;

if the CAN parameter information does not include the alarming information of the passenger cabin, outputting the information of the fault of a CAN fire alarming information input circuit corresponding to the passenger cabin;

When the voltage control signal output circuit is in failure, the voltage control signal output circuit corresponding to the passenger cabin in the control box can be judged by comparing the received voltage information with the standard driving index in the working condition state.

Preferably, when the detection is carried out under different working condition states of the power cabin, the simulated fire alarm information is power cabin CAN fire alarm instruction information;

When the control box is implemented, the power cabin is divided into two working condition states, namely an automatic working condition state and a semi-automatic working condition state, the standard driving indexes under the two working condition states are stored in the detection system, and whether the voltage control signal output circuit corresponding to the power cabin in the control box has a fault can be judged by comparing the received voltage information with the standard driving indexes under the working condition states under each working condition state.

When detection is carried out under different working conditions of the bottom cabin, the simulated fire alarm information is a simulated thermocouple signal, and the simulated thermocouple signal is sent to a thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box through a simulated thermocouple output circuit of the detection system;

if the CAN parameter information does not comprise the alarm information of the bottom cabin, outputting the information of the thermocouple voltage signal input circuit fault corresponding to the bottom cabin;

When the voltage control signal output circuit is in failure, the detection system is used for detecting whether the voltage control signal output circuit corresponding to the bottom cabin in the control box is in failure or not.

Specifically, as shown in fig. 3, the analog thermocouple output circuit includes a first inverter, a first resistor, a first power tube, a first diode, a first electromagnetic relay, and a current-limiting resistor;

a static contact of the first electromagnetic relay is connected with one end of the current-limiting resistor, and the other end of the current-limiting resistor is used for receiving the analog thermocouple signal; and a moving contact of the first electromagnetic relay is connected with a thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box.

Specifically, the voltage information that receipt fire extinguishing explosion suppression control box sent through voltage control signal output interface includes:

connecting a voltage division acquisition circuit of a detection system with a voltage control signal output interface of a fire extinguishing and explosion suppression control box, and receiving the voltage information through the voltage division acquisition circuit;

one end of the divider resistor R2 is connected with one end of the pull-up resistor R1, and is used as the input end of the divider acquisition circuit to be connected with a voltage control signal output interface of the fire-extinguishing explosion suppression control box, and the other end of the pull-up resistor R1 is connected with a pull-up power supply;

the other end of the divider resistor R2 is used as the output end of the divider acquisition circuit; the other end of the divider resistor R2 is also connected with one end of the divider resistor R3, and the other end of the divider resistor R3 is grounded.

In a second aspect, a specific embodiment of the present invention discloses a detection system for a fire extinguishing and explosion suppression control box, as shown in fig. 5, the detection system includes a Controller Area Network (CAN) communication transceiver module, a data acquisition module, a data analysis processing module, and a human-computer interaction module;

the man-machine interaction module is connected with the CAN communication transceiving module and sends a fire alarm instruction to the CAN communication transceiving module;

the CAN communication transceiving module is used for generating corresponding CAN instruction information according to the fire alarm instruction, sending the CAN instruction information to a CAN communication interface of the fire extinguishing explosion suppression control box, receiving CAN frame information sent by the fire extinguishing explosion suppression control box through the CAN communication transceiving module, analyzing the CAN frame information to obtain CAN parameter information, and sending the CAN parameter information to the data analysis processing module;

the data acquisition module is connected with a voltage control signal output interface of the fire extinguishing explosion suppression control box and is used for acquiring voltage information output by the fire extinguishing explosion suppression control box and sending the voltage information to the data analysis processing module;

the data analysis processing module analyzes and processes the CAN parameter information and the voltage information to obtain a detection result of the fire extinguishing and explosion suppression control box and sends the detection result to the man-machine interaction module;

the man-machine interaction module is also used for displaying the detection result of the fire extinguishing and explosion suppression control box.

As shown in fig. 5, the fire extinguishing and explosion suppression control box comprises a CAN communication interface and a voltage control signal output interface.

Specifically, the CAN communication interface is connected with a CAN communication transceiving module of the detection system through a CAN bus, and the fire extinguishing and explosion suppression control box CAN perform CAN data interaction with the detection system through the CAN communication interface. The fire extinguishing and explosion suppression control box CAN send CAN frame information to the detection system, and the detection system CAN also send CAN command information to the fire extinguishing and explosion suppression control box.

It is worth to be noted that after the CAN communication interface of the fire extinguishing and explosion suppression control box is connected with the CAN communication transceiver module of the detection system, in order to detect whether the CAN communication interface of the fire extinguishing and explosion suppression control box is normal or not, a CAN command CAN be sent to the CAN communication interface through the CAN communication transceiver module, if the CAN frame information returned by the CAN communication interface CAN be received, the CAN communication interface is normal, otherwise, the CAN communication interface is in fault and needs to be overhauled; after the overhaul, the CAN communication interface is ensured to be normal, and the detection system of the application is reused to detect other parts of the fire extinguishing and explosion suppression control box.

Specifically, the human-computer interaction module can provide a human-computer interaction interface, a command operation interface and a fault display interface for a user. The user can selectively detect all parts of the fire extinguishing and explosion suppression control box through the human-computer interaction interface.

For the convenience of understanding the working principle of the detection system, the working principle of the fire extinguishing and explosion suppression control box is described first:

the fire extinguishing explosion suppression control box receives fire alarm information through the CAN communication interface, CAN send out CAN frame information through the CAN communication interface to give an alarm after receiving the fire alarm information, and outputs voltage information through the voltage control signal output interface to control relevant fire extinguishing equipment in a fire alarm area to work.

For example, if the passenger compartment sends out fire alarm information, the fire extinguishing and explosion suppression control box can acquire the information of the fire alarm in the passenger compartment after analyzing the fire alarm information, and thus the fire extinguishing and explosion suppression control box can respond to the fire alarm in the passenger compartment as follows: on one hand, CAN frame information is sent out through a CAN communication interface to alarm; on the other hand, the voltage control command output interface outputs a voltage signal, so that corresponding fire extinguishing equipment in the passenger compartment is controlled to respond.

Based on the above-mentioned theory of operation of explosion-proof control box puts out a fire, the user passes through the human-computer interaction module input fire alarm instruction in this application, the human-computer interaction module is with this fire alarm instruction transmission to CAN communication transceiver module, CAN communication transceiver module generates the CAN instruction information that corresponds according to the fire alarm instruction, with CAN instruction information transmission to CAN communication interface, a fire alarm information that is used for simulating the explosion-proof control box of putting out a fire and receives, after receiving this CAN instruction information, the explosion-proof control box of putting out a fire CAN make following response: firstly, sending alarm information to the outside through a CAN communication interface in a CAN frame information mode; then, the voltage control command output interface outputs a voltage signal to control the action of the related fire extinguishing equipment.

In order to detect whether the fire extinguishing explosion suppression control box CAN normally respond, the CAN communication transceiver module receives CAN frame information sent by a CAN communication interface of the control box. The CAN communication transceiving module analyzes the CAN frame information to obtain CAN parameter information and sends the CAN parameter information to the data analysis processing module. On the other hand, the voltage signal output by the voltage control instruction output interface of the control box is acquired through the data acquisition module, and the voltage signal is sent to the data analysis processing module.

The data analysis processing module analyzes and processes the CAN parameter information and the voltage information to obtain a detection result of the fire extinguishing and explosion suppression control box, and sends the detection result to the man-machine interaction module, and the man-machine interaction module CAN be used for displaying the detection result of the fire extinguishing and explosion suppression control box.

Preferably, the CAN parameter information comprises one or more of:

internal numbering information of the control box;

alarm information of the passenger compartment;

alarm information of the power cabin;

alarm information of the bottom cabin;

working condition state information of the passenger compartment;

working condition state information of the power compartment;

and (4) working condition state information of the bottom cabin.

It is worth explaining that the alarm information of the passenger cabin comprises the alarm time of the fire extinguishing and explosion suppression control box when the fire of the passenger cabin is alarmed, the alarm information of the power cabin comprises the alarm time of the fire extinguishing and explosion suppression control box when the fire of the power cabin is alarmed, and the alarm information of the bottom cabin comprises the alarm time of the fire extinguishing and explosion suppression control box when the fire of the bottom cabin is alarmed.

After the data analysis processing module receives the alarm time of each cabin and the sending time of the alarm instruction, the response time of the fire extinguishing explosion suppression control box to each cabin in fire alarm can be determined through calculation, the standard response time of each cabin is compared, whether the response time of the fire extinguishing explosion suppression control box to the fire alarm signal of each cabin is normal or not can be determined, and the detection result of whether the response time is normal or not is displayed in the man-machine interaction module. It CAN be understood that the sending time of the alarm instruction CAN be the time when the CAN communication transceiver module sends the CAN instruction message.

When the CAN communication transceiver module is used for sending CAN command information containing fire alarm information to the fire extinguishing and explosion suppression control box, the fire extinguishing and explosion suppression control box responds after receiving the CAN command information, on one hand, CAN frame information is sent to the CAN communication transceiver module, on the other hand, control voltage signals for controlling fire extinguishing equipment in each cabin are sent, the detection system CAN receive the CAN frame information and the voltage signals, and then the data analysis processing module is used for carrying out analysis processing to determine the fault point of the fire extinguishing and explosion suppression control box.

It is worth to explain that, when the CAN fire alarm information input circuit in the fire extinguishing explosion suppression control box breaks down, no matter how much CAN fire alarm instruction information is sent to the fire extinguishing explosion suppression control box by the detection system, the fire extinguishing explosion suppression control box CAN not respond to the CAN fire alarm instruction information, and therefore the CAN fire alarm information input circuit CAN be determined to break down.

Under the condition that the CAN fire alarm information input circuit is normal, the fire extinguishing and explosion suppression control box feeds back alarm information to the CAN communication transceiving module according to the CAN instruction information on one hand, and sends voltage information for controlling the fire extinguishing equipment in each cabin to the data acquisition module of the detection system through the voltage control signal output interface on the other hand, and the voltage information is compared with a normal standard driving index, so that whether the voltage control signal output circuit for controlling the fire extinguishing equipment in each cabin in the fire extinguishing and explosion suppression control box breaks down or not CAN be respectively determined.

Compared with the prior art, the detection system of the fire extinguishing and explosion suppression control box provided by the embodiment of the invention CAN control the fire alarm state of the cabin controlled by the fire extinguishing and explosion suppression control box through the CAN communication transceiving module, and analyze and process CAN frame information and voltage information by receiving the CAN frame information and the voltage information sent by the fire extinguishing and explosion suppression control box, so as to realize automatic detection of each fault point of the fire extinguishing and explosion suppression control box.

Furthermore, the data acquisition module includes a plurality of signal acquisition circuits, and each signal acquisition circuit is used for gathering the voltage information of the way of putting out a fire and suppressing explosion control box output.

Specifically, as shown in fig. 6, the data acquisition module includes a signal acquisition circuit 1, a signal acquisition circuit 2 \8230 \8230anda signal acquisition circuit N, each signal acquisition circuit corresponding to a path of voltage information output by the fire extinguishing and explosion suppression control box. It can be understood that the voltage information is the voltage information which is sent after the fire extinguishing explosion suppression control box gives an alarm and controls the fire extinguishing equipment in each cabin. Therefore, the detection system can determine the comparison result between the voltage information of each path and the normal standard driving index according to the voltage information of each path, if the difference value between the two paths is within the threshold range, the voltage control signal output circuit corresponding to the voltage information of the path is normal, otherwise, if the difference value between the two paths exceeds the threshold range, the voltage control signal output circuit corresponding to the voltage information of the path has a fault.

Preferably, the signal acquisition circuit is a voltage division acquisition circuit, and the voltage division acquisition circuit comprises a pull-up resistor R1, a voltage division resistor R2 and a voltage division resistor R3;

the other end of the divider resistor R2 is used as the output end of the divider acquisition circuit and is connected with the data analysis processing module; the other end of the divider resistor R2 is also connected with one end of the divider resistor R3, and the other end of the divider resistor R3 is grounded.

Specifically, as shown in fig. 4, OUT4 is a voltage signal output by a voltage control signal output interface of the fire extinguishing and explosion suppression control box, one end of R2 is connected to receive the voltage signal OUT4, a 5V port is a pull-up power source, an Al1 port is an input end of the data analysis processing module, and the other end of R2 is used as an output end of the voltage division acquisition circuit, so that the received OUT4 is divided by a voltage division resistor R2 and a voltage division R3 and is output to the data analysis processing module.

When the fire extinguishing and explosion suppression control box is implemented, the voltage division acquisition circuit divides the abnormal voltage information or the overlarge voltage information sent by the fire extinguishing and explosion suppression control box to protect the circuit of the detection system, so that the safety of the detection system of the fire extinguishing and explosion suppression control box can be improved.

Further, the detection system also comprises a data output module;

the data output module is connected with the man-machine interaction module and the fire extinguishing and explosion suppression control box and used for receiving the simulation instruction sent by the man-machine interaction module and sending a simulation signal to the fire extinguishing and explosion suppression control box or directly controlling the on-off state of the fire extinguishing and explosion suppression control box according to the simulation instruction so as to detect the fire extinguishing and explosion suppression control box.

Specifically, as shown in fig. 7, a user may send an analog instruction through the human-computer interaction module, and after receiving the analog instruction, the data output module sends an analog signal to the fire-extinguishing and explosion-suppression control box according to the analog instruction or directly controls the on-off state of the fire-extinguishing and explosion-suppression control box, so as to detect the fire-extinguishing and explosion-suppression control box.

It is worth to be noted that the on-off state of the fire extinguishing explosion suppression control box can be controlled by a switch on the fire extinguishing explosion suppression control box, and can also be controlled by the data output module provided by the embodiment of the invention.

Preferably, as shown in fig. 7, the data output module includes an analog thermocouple output circuit and a thermocouple conversion module; the simulation instruction comprises a simulation thermocouple instruction; the analog signal comprises an analog thermocouple signal;

the thermocouple conversion module is connected with the human-computer interaction module and used for receiving the simulation thermocouple instruction sent by the human-computer interaction module, generating a first control instruction signal and the simulation thermocouple signal according to the simulation thermocouple instruction and sending the first control instruction signal and the simulation thermocouple signal to the simulation thermocouple output circuit;

and the analog thermocouple output circuit sends the analog thermocouple signal to a thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box under the control of the first control instruction signal.

It is worth to be noted that the fire extinguishing explosion suppression control box can receive a voltage change curve output by an external thermocouple through the thermocouple voltage signal input interface, the embodiment of the invention simulates the voltage change curve output by the thermocouple through a simulated thermocouple signal, sends the simulated thermocouple signal to the thermocouple voltage signal input interface of the fire extinguishing explosion suppression control box, and can detect whether a fault exists in a thermocouple voltage signal input circuit in the fire extinguishing explosion suppression control box through whether the fire extinguishing explosion suppression control box responds to the simulated thermocouple signal.

Under the normal condition, if the voltage change curve output by the thermocouple indicates that the temperature is normal and no fire occurs, the fire extinguishing and explosion suppression control box does not give an alarm after judging the temperature, and continues to monitor; if the voltage change curve output by the thermocouple represents that the temperature is too high and a fire disaster occurs, the fire extinguishing and explosion suppression control box gives an alarm after judging the curve, and after confirming the alarm, on one hand, CAN frame information including alarm information is sent through a CAN communication interface, and on the other hand, voltage information is output through a voltage control signal output interface.

Preferably, the analog thermocouple output circuit comprises a first inverter, a first resistor, a first power tube, a first diode, a first electromagnetic relay and a current-limiting resistor;

the INPUT end of the first phase inverter is used for receiving the first control instruction signal, the output end of the first phase inverter is connected with one end of the first resistor, the other end of the first resistor is connected with an INPUT port of the first power tube, a drain port of the first power tube is connected with the anode of the first diode and one end of a control coil of the first electromagnetic relay, and the cathode of the first diode is connected with a power supply and the other end of the control coil of the first electromagnetic relay;

Specifically, as shown in fig. 3, IO2 is a first control command signal, AO0 is an analog thermocouple signal, an HR1+ port is a thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box, and V-24V is a power supply.

The following are exemplary: an INPUT end 5A of the first phase inverter U4E is used for receiving a first control instruction signal IO2, an output end 5Y is used for being connected with one end of a first resistor R16, the other end of the first resistor R16 is connected with an INPUT port of a first power tube U3, a drain port of the first power tube U3 is connected with the anode of a first diode D1 and one end 2 of a control coil of a first electromagnetic relay RL1, and the cathode of the first diode D1 is connected with a power supply and the other end of the control coil of the first electromagnetic relay RL 1; a stationary contact 3 of the first electromagnetic relay RL1 is connected with one end of a current-limiting resistor, and the other end of the current-limiting resistor is used for receiving an analog thermocouple signal; the movable contact 4 of the first electromagnetic relay is connected with a thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box.

The following are exemplary: the first inverter U4E may be selected to be model 74HC14 and the first power transistor U3 may be selected to be model BTS 3018.

Furthermore, the data output module comprises a simulated working condition circuit and a working condition conversion module; the simulation instruction comprises a simulation working condition instruction;

the working condition conversion module is connected with the human-computer interaction module and used for receiving a simulated working condition instruction sent by the human-computer interaction module, generating a second control instruction signal according to the simulated working condition instruction and sending the second control instruction signal to the simulated working condition circuit;

the simulated working condition circuit is connected with a working condition switch control interface of the fire extinguishing and explosion suppression control box, and the simulated working condition circuit directly controls the working condition switch state of the fire extinguishing and explosion suppression control box according to the second control instruction signal.

Specifically, as shown in fig. 7, a user may send a simulated condition instruction to the condition conversion module through the human-computer interaction module, the condition conversion module generates a second control instruction signal according to the simulated condition instruction, and the simulated condition circuit receives the second control instruction signal and controls a condition switch controlled by the simulated condition circuit.

It is worth to be noted that, under the condition that the circuit of the working condition switch of the fire extinguishing explosion suppression control box is normal, when a user sends a command of working condition transition to the fire extinguishing explosion suppression control box through the human-computer interaction module, for example, the command changes from wartime to peacetime or from automatic to semi-automatic, after receiving the command of working condition transition, the fire extinguishing explosion suppression control box sends CAN frame information to a CAN communication transceiver module of the detection system through a CAN communication interface, the CAN communication transceiver module analyzes the CAN frame information to obtain CAN parameter information, the CAN parameter information includes the working condition state information of the fire extinguishing explosion suppression control box, and thus, whether the working condition state of the fire extinguishing explosion suppression control box changes or not CAN be determined. If the working condition change-over switch circuit of the fire extinguishing explosion suppression control box is in an abnormal condition, the working condition state of the fire extinguishing explosion suppression control box cannot be changed, and therefore whether the corresponding working condition change-over switch circuit is normal or not CAN be judged according to the CAN parameters obtained by analyzing the received CAN frame information.

Preferably, the simulated condition circuit comprises a second inverter, a second resistor, a second power tube, a second diode and a second electromagnetic relay;

the INPUT end of the second phase inverter is used for receiving the second control instruction signal, the output end of the second phase inverter is connected with one end of a second resistor, the other end of the second resistor is connected with an INPUT port of a second power tube, a drain port of the second power tube is connected with the anode of a second diode and one end of a control coil of a second electromagnetic relay, and the cathode of the second diode is connected with a power supply and the other end of the control coil of the second electromagnetic relay;

It is worth to be noted that the working condition switch control interface of the fire extinguishing explosion suppression control box is connected with the working condition change-over switch circuit in the fire extinguishing explosion suppression control box, and under the condition that the working condition change-over switch circuit in the fire extinguishing explosion suppression control box is normal, if the state of the working condition switch control interface of the fire extinguishing explosion suppression control box is changed, the working condition in the fire extinguishing explosion suppression control box is correspondingly changed.

Specifically, as shown in fig. 2, IO1 is a second control instruction signal, GND is a ground terminal, KEY1 is a working condition switch control interface of the fire extinguishing and explosion suppression control box, and V-24V is a power supply.

The following are exemplary: the second control instruction signal IO1 is INPUT to the INPUT end 6A of the second inverter U2F, is output from the output end 6Y, passes through the second resistor R4, and is INPUT to the INPUT port of the second power tube U1, the gnd port of the second power tube U1 is grounded, the drain port of the second power tube U1 is connected to the anode of the second diode D2 and one end of the control coil of the second electromagnetic relay RL2, and the other end of the control coil of the second electromagnetic relay RL2 and the cathode of the second diode D2 are connected to a power supply. When the second control instruction signal IO1 is a low level signal, the fixed contact and the movable contact of the second electromagnetic relay RL2 are connected, and the working condition switch control interface of the fire extinguishing explosion suppression control box is grounded, so that the state of the working condition switch can be changed, and the working condition of the fire extinguishing explosion suppression control box is changed.

The following are exemplary: the second inverter U2F may be selected to be model 74HC14 and the second power tube U1 may be selected to be model BTS 3018.

When the fire extinguishing explosion suppression control box is implemented, a user sends a simulation instruction to the data output module through the human-computer interaction module, the data output module CAN send a simulation thermocouple signal to the fire extinguishing explosion suppression control box or control the working condition of the fire extinguishing explosion suppression control box to change according to the simulation instruction, and then whether a fault exists in a working condition switching switch circuit of the fire extinguishing explosion suppression control box or not and whether a fault exists in a thermocouple voltage signal input circuit of the fire extinguishing explosion suppression control box or not CAN be determined according to CAN frame information output by the fire extinguishing explosion suppression control box through a CAN communication interface and voltage information output by a voltage control signal output interface.

Compared with the prior art, the detection system of the fire-extinguishing explosion-suppression control box provided by the embodiment of the invention can realize detection on the thermocouple voltage signal input circuit and the working condition switching circuit of the fire-extinguishing explosion-suppression control box through the data output module which comprises the analog thermocouple output circuit, the thermocouple conversion module, the simulated working condition circuit and the working condition conversion module, and can realize automatic control on the working condition switch and the analog thermocouple signal of the fire-extinguishing explosion-suppression control box, thereby improving the automation degree of the detection system of the fire-extinguishing explosion-suppression control box, and being more rapid, simple and convenient.

Furthermore, the data output module comprises a plurality of simulated working condition circuits and corresponding working condition conversion modules, and each simulated working condition circuit and the corresponding working condition conversion module are mutually independent to control one working condition switch control interface of the fire extinguishing and explosion suppression control box;

the working condition switch control interface of the fire extinguishing and explosion suppression control box comprises a wartime/normal-time switch interface of a passenger cabin, an automatic/semi-automatic state switch interface of a power cabin and an automatic/semi-automatic state switch interface of a bottom cabin.

It is worth explaining that when the fire extinguishing explosion suppression control box monitors and alarms a plurality of cabins, the fire extinguishing explosion suppression control box is provided with a plurality of working condition switch control interfaces, and each working condition switch control interface corresponds to two working condition states of one cabin. The multiple cabins can comprise a passenger cabin, a power cabin and a bottom cabin, wherein the working condition states of all the cabins are different, the passenger cabin comprises two working condition states in wartime/peacetime, the power cabin comprises two working condition states in an automatic/semi-automatic state, and the bottom cabin comprises two working condition states in an automatic/semi-automatic state.

It is worth explaining that the data output module comprises a plurality of simulated condition circuits and corresponding condition conversion modules, each simulated condition circuit and each corresponding condition conversion module are mutually independent to control one condition switch control interface of the fire extinguishing and explosion suppression control box, each condition switch of the fire extinguishing and explosion suppression control box can be controlled, the switches are mutually independent to control, risks of mutual interference can be reduced, and authenticity of detection is improved.

Compared with the prior art, the detection system of the fire-extinguishing explosion-suppression control box provided by the embodiment of the invention controls one working condition switch control interface of the fire-extinguishing explosion-suppression control box through each simulated working condition circuit and the corresponding working condition conversion module which are mutually independent, so that the risk of mutual interference is reduced, and the authenticity of detection is improved.

It can be understood that the detection system related to the detection method of the fire-extinguishing explosion-suppression control box provided by the embodiment of the invention may be the detection system of the fire-extinguishing explosion-suppression control box provided by the embodiment of the invention, or may be other detection systems capable of achieving the same function, and the detection system is not specifically limited herein.

Those skilled in the art will appreciate that all or part of the flow of the method implementing the above embodiments may be implemented by a computer program, which is stored in a computer readable storage medium, to instruct related hardware. The computer readable storage medium is a magnetic disk, an optical disk, a read-only memory or a random access memory.

While the invention has been described with reference to specific preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A detection method for a fire extinguishing and explosion suppression control box is characterized by comprising the following steps:

sequentially detecting whether working condition change-over switch circuits corresponding to all cabins monitored by the fire extinguishing and explosion suppression control box are normal or not; if the working condition change-over switch circuit corresponding to a certain cabin is abnormal, outputting the information of the fault of the working condition change-over switch circuit corresponding to the cabin, and continuously carrying out subsequent detection after the working condition change-over switch circuit corresponding to the cabin is overhauled;

sending simulated fire alarm information to the fire extinguishing explosion suppression control box;

receiving CAN frame information sent by a fire extinguishing and explosion suppression control box through a CAN communication interface and analyzing the CAN frame information to obtain CAN parameter information; receiving voltage information sent by the fire extinguishing and explosion suppression control box through a voltage control signal output interface;

2. The method for detecting a fire extinguishing and explosion suppression control box according to claim 1, wherein each cabin comprises a passenger cabin, a power cabin and a bottom cabin, the passenger cabin comprises two working condition states of wartime and peacetime, the power cabin comprises two working condition states of automatic and semi-automatic, and the bottom cabin comprises two working condition states of automatic and semi-automatic.

3. The method for detecting a fire-extinguishing explosion-suppression control box according to claim 2, wherein before sequentially detecting whether the operating condition change-over switch circuits corresponding to the cabins monitored by the fire-extinguishing explosion-suppression control box are normal, the method further comprises:

4. The method of detecting a fire suppression and explosion suppression control box according to claim 3, wherein the CAN parameter information includes one or more of:

internal numbering information of the control box;

alarm information of the passenger compartment;

alarm information of the power cabin;

alarm information of the bottom cabin;

operating condition state information of the passenger compartment;

working condition state information of the power compartment;

and (4) working condition state information of the bottom cabin.

5. The detection method of the fire extinguishing and explosion suppression control box according to claim 4, wherein the simulated fire alarm information is passenger cabin CAN fire alarm instruction information when detection is performed under different working condition states of the passenger cabin;

comparing the voltage information with a normal standard driving index of the fire extinguishing explosion suppression control box, and if the difference value of the two exceeds a threshold range, outputting the information of the voltage control signal output circuit fault corresponding to the voltage information;

if the CAN parameter information does not comprise the alarm information of the power cabin, outputting the information of the fault of a CAN fire alarm information input circuit corresponding to the power cabin;

6. The detection method of the fire extinguishing and explosion suppression control box according to claim 4, wherein when detection is performed under different working conditions of the bottom cabin, the simulated fire alarm information is a simulated thermocouple signal, and the simulated thermocouple signal is sent to a thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box through a simulated thermocouple output circuit of the detection system;

7. The fire suppression and explosion suppression control box detecting method according to claim 6, wherein the analog thermocouple output circuit includes a first inverter, a first resistor, a first power tube, a first diode, a first electromagnetic relay and a current limiting resistor;

the INPUT end of the first phase inverter is used for receiving a control instruction, the output end of the first phase inverter is connected with one end of the first resistor, the other end of the first resistor is connected with an INPUT port of the first power tube, a drain port of the first power tube is connected with the anode of the first diode and one end of a control coil of the first electromagnetic relay, and the cathode of the first diode is connected with a power supply and the other end of the control coil of the first electromagnetic relay;

a stationary contact of the first electromagnetic relay is connected with one end of the current-limiting resistor, and the other end of the current-limiting resistor is used for receiving the analog thermocouple signal; and the movable contact of the first electromagnetic relay is connected with a thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box.

8. The method for detecting the fire extinguishing and explosion suppression control box according to claim 3, wherein the sequentially detecting whether the working condition switching switch circuit corresponding to each cabin monitored by the fire extinguishing and explosion suppression control box is normal comprises the following steps:

9. The method for detecting a fire suppression and explosion suppression control box according to claim 8, wherein the analog operating condition circuit comprises a second inverter, a second resistor, a second power tube, a second diode and a second electromagnetic relay;

10. The method for detecting the fire extinguishing and explosion suppression control box according to claim 1, wherein the step of receiving the voltage information sent by the fire extinguishing and explosion suppression control box through the voltage control signal output interface comprises the following steps:

receiving the voltage information through a partial voltage acquisition circuit of the detection system;