Detection Method for Fire Extinguishing and Explosion Suppression Control Box

Abstract

The present invention relates to a detection method for a fire extinguishing and explosion suppression control box, belonging to the technical field of fire extinguishing and explosion suppression, and solves the problems of missed detection and misjudgment in the manual detection of the fire extinguishing and explosion suppression control box in the prior art. The detection method includes: sequentially detecting whether the working condition switching switch circuits corresponding to the respective compartments monitored by the fire extinguishing and explosion suppression control box are normal; sequentially sending working condition switching instructions corresponding to the respective compartments to the fire extinguishing and explosion suppression control box, and performing the following detections on the fire extinguishing and explosion suppression control box under different working conditions of the respective compartments: sending simulated fire alarm information to the fire extinguishing and explosion suppression control box; receiving the CAN frame information sent by the fire extinguishing and explosion suppression control box through the CAN communication interface and parsing the CAN frame information to obtain CAN parameter information; receiving the voltage information sent by the fire extinguishing and explosion suppression control box through the voltage control signal output interface; determining the fault points 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

Technical Field

[0001] The present invention relates to the technical field of fire extinguishing and explosion suppression, and particularly to a detection method for a fire extinguishing and explosion suppression control box. Background Art

[0002] With the development of society and economy, potential fire and explosion safety hazards in flammable and explosive industries are obvious, resulting in serious casualties and property losses. Moreover, some accidents also cause air pollution and environmental damage, leading to ecological imbalance. Therefore, the fire extinguishing and explosion suppression control box has a very wide range of application space.

[0003] In the prior art, when a fire extinguishing and explosion suppression control box fails, generally, potential fault points are checked and tested one by one manually according to experience. During the testing process, the entire fire extinguishing and explosion suppression system is usually connected, and multiple detections are required to locate the fault point.

[0004] However, manual detection has the following disadvantages:

[0005] 1. Detecting a certain fault may miss some hidden potential hazards;

[0006] 2. There may be a situation of misjudgment due to incorrect inspection procedures resulting in incorrect results;

[0007] 3. Detecting together with the entire fire extinguishing and explosion suppression system is too troublesome. There are many components and cables, which are messy and will affect the operation of the detection personnel. Summary of the Invention

[0008] In view of the above analysis, the embodiments of the present invention aim to provide a detection method for a fire extinguishing and explosion suppression control box to solve the problems of missed detection and misjudgment in manually detecting the fire extinguishing and explosion suppression control box in the prior art.

[0009] The embodiments of the present invention provide a detection method for a fire extinguishing and explosion suppression control box, and the detection method includes:

[0010] Sequentially detect whether the working condition switching switch circuits corresponding to each compartment monitored by the fire extinguishing and explosion suppression control box are normal; if the working condition switching switch circuit corresponding to a certain compartment is abnormal, output the information of the fault of the working condition switching switch circuit corresponding to that compartment, and after repairing the working condition switching switch circuit corresponding to that compartment, continue the subsequent detection;

[0011] Sequentially send the working condition switching instructions corresponding to each compartment to the fire extinguishing and explosion suppression control box, and control each compartment to be in different working condition states through the working condition switching switch circuits corresponding to each compartment;

[0012] Under different working condition states of each compartment, perform the following detections on the fire extinguishing and explosion suppression control box:

[0013] Send simulated fire alarm information to the fire extinguishing and explosion suppression control box;

[0014] Receive the CAN frame information sent by the fire extinguishing and explosion suppression control box through the CAN communication interface and parse the CAN frame information to obtain CAN parameter information; receive the voltage information sent by the fire extinguishing and explosion suppression control box through the voltage control signal output interface;

[0015] Determine the fault point of the fire extinguishing and explosion suppression control box according to the CAN parameter information and the voltage information.

[0016] Based on a further improvement of the above detection method, each of the cabins includes a crew cabin, a power cabin, and a bottom cabin. The crew cabin includes two working conditions: wartime and peacetime. The power cabin includes two working conditions: automatic and semi-automatic. The bottom cabin includes two working conditions: automatic and semi-automatic.

[0017] Based on a further improvement of the above detection method, before sequentially detecting whether the working condition switching switch circuits corresponding to the respective cabins monitored by the fire extinguishing and explosion suppression control box are normal, the detection method further includes:

[0018] Connect the CAN communication transceiver module in the detection system to the CAN communication interface of the fire extinguishing and explosion suppression control box. The CAN communication transceiver module sends any CAN instruction information to the CAN communication interface. If the CAN frame information returned by the CAN communication interface can be received, it indicates that the CAN communication interface is normal. Otherwise, output the information of the CAN communication interface fault, and continue the subsequent detection after repairing the CAN communication interface.

[0019] Based on a further improvement of the above detection method, the CAN parameter information includes one or more of the following:

[0020] Internal number information of the control box;

[0021] Alarm information of the crew cabin;

[0022] Alarm information of the power cabin;

[0023] Alarm information of the bottom cabin;

[0024] Working condition status information of the crew cabin;

[0025] Working condition status information of the power cabin;

[0026] Working condition status information of the bottom cabin.

[0027] Based on a further improvement of the above detection method, when detecting under different working conditions of the crew cabin, the simulated fire alarm information is the CAN fire alarm instruction information of the crew cabin;

[0028] Determining the fault points of the fire extinguishing and explosion suppression control box based on the CAN parameter information and the voltage information includes:

[0029] If the CAN parameter information does not include the alarm information of the passenger compartment, output the information of the CAN fire alarm information input circuit failure corresponding to the passenger compartment;

[0030] Compare the voltage information with the normal standard drive index of the fire extinguishing and explosion suppression control box. If the difference between the two exceeds the threshold range, output the information of the voltage control signal output circuit failure corresponding to the voltage information;

[0031] When detecting under different working conditions of the power compartment, the simulated fire alarm information is the power compartment CAN fire alarm command information;

[0032] Determining the fault points of the fire extinguishing and explosion suppression control box based on the CAN parameter information and the voltage information includes:

[0033] If the CAN parameter information does not include the alarm information of the power compartment, output the information of the CAN fire alarm information input circuit failure corresponding to the power compartment;

[0034] Compare the voltage information with the normal standard drive index of the fire extinguishing and explosion suppression control box. If the difference between the two exceeds the threshold range, output the information of the voltage control signal output circuit failure corresponding to the voltage information.

[0035] Based on a further improvement of the above detection method, when detecting under different working conditions of the bottom compartment, the simulated fire alarm information is a simulated thermocouple signal, and the simulated thermocouple signal is sent to the thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box through the simulated thermocouple output circuit of the detection system;

[0036] Determining the fault points of the fire extinguishing and explosion suppression control box based on the CAN parameter information and the voltage information includes:

[0037] If the CAN parameter information does not include the alarm information of the bottom compartment, output the information of the thermocouple voltage signal input circuit failure corresponding to the bottom compartment;

[0038] Compare the voltage information with the normal standard drive index of the fire extinguishing and explosion suppression control box. If the difference between the two exceeds the threshold range, output the information of the voltage control signal output circuit failure corresponding to the voltage information.

[0039] Based on a further improvement of the above detection method, the simulated thermocouple output circuit includes a first inverter, a first resistor, a first power transistor, a first diode, a first electromagnetic relay, and a current limiting resistor;

[0040] The input terminal of the first inverter is used to receive a control instruction, and the output terminal is connected to one end of the first resistor. The other end of the first resistor is connected to the INPUT port of the first power transistor. The drain port of the first power transistor is connected to the positive electrode of the first diode and one end of the control coil of the first electromagnetic relay. The negative electrode of the first diode is connected to the power supply and the other end of the control coil of the first electromagnetic relay;

[0041] The static contact of the first electromagnetic relay is connected to one end of the current-limiting resistor, and the other end of the current-limiting resistor is used to receive the analog thermocouple signal; the moving contact of the first electromagnetic relay is connected to the thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box.

[0042] Based on a further improvement of the above detection method, sequentially detecting whether the working condition switching switch circuits corresponding to the respective compartments monitored by the fire extinguishing and explosion suppression control box are normal includes:

[0043] Controlling the change of the working condition state of the working condition switch control interfaces corresponding to the respective compartments through the analog working condition circuit of the detection system;

[0044] Receiving the CAN frame information sent by the CAN communication interface, parsing the CAN frame information to obtain the CAN parameter information;

[0045] Comparing the working condition state information corresponding to the respective compartments in the CAN parameter information with the working condition state information corresponding to the respective compartments before the change of the working condition state. If the two pieces of working condition state information corresponding to a certain compartment are consistent, then output the information of the fault of the working condition switching switch circuit corresponding to that compartment.

[0046] Based on a further improvement of the above detection method, the analog working condition circuit includes a second inverter, a second resistor, a second power transistor, a second diode, and a second electromagnetic relay;

[0047] The input terminal of the second inverter is used to receive a control instruction, and the output terminal is connected to one end of the second resistor. The other end of the second resistor is connected to the INPUT port of the second power transistor. The drain port of the second power transistor is connected to the positive electrode of the second diode and one end of the control coil of the second electromagnetic relay. The negative electrode of the second diode is connected to the power supply and the other end of the control coil of the second electromagnetic relay;

[0048] The static contact of the second electromagnetic relay is grounded, and the moving contact of the second electromagnetic relay is connected to the working condition switch control interface of the fire extinguishing and explosion suppression control box.

[0049] Based on a further improvement of the above detection method, receiving the voltage information sent by the fire extinguishing and explosion suppression control box through the voltage control signal output interface includes:

[0050] Receive the voltage information through the voltage division acquisition circuit of the detection system;

[0051] The voltage division acquisition circuit includes a pull-up resistor R1, a voltage division resistor R2, and a voltage division resistor R3;

[0052] One end of the voltage division resistor R2 is connected to one end of the pull-up resistor R1 and serves as the input end of the voltage division acquisition circuit to be connected to the 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 to the pull-up power supply;

[0053] The other end of the voltage division resistor R2 serves as the output end of the voltage division acquisition circuit; the other end of the voltage division resistor R2 is also connected to one end of the voltage division resistor R3, and the other end of the voltage division resistor R3 is grounded.

[0054] Compared with the prior art, the present invention can at least achieve one of the following beneficial effects:

[0055] 1. The present invention realizes the automatic detection of each fault point of the fire extinguishing and explosion suppression control box by sending the fire alarm information of each cabin to the fire extinguishing and explosion suppression control box and receiving the CAN frame information and voltage information sent by the fire extinguishing and explosion suppression control box.

[0056] 2. The present invention can detect the fire extinguishing and explosion suppression control box in different working conditions of each cabin by sending the thermocouple voltage change curve and controlling the state of the working condition switches of each cabin of the fire extinguishing and explosion suppression control box, realizing all-round detection.

[0057] In the present invention, the above technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present invention will be described in the subsequent specification, and some advantages can be obvious from the specification or understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained from the content specifically pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The drawings are only for the purpose of showing specific embodiments and are not considered as a limitation to the present invention. Throughout the drawings, the same reference signs represent the same components.

[0059] Figure 1 It is a schematic flow chart of a detection method for a fire extinguishing and explosion suppression control box provided by an embodiment of the present invention;

[0060] Figure 2 It is a schematic structural diagram of a simulated working condition circuit provided by an embodiment of the present invention;

[0061] Figure 3Schematic diagram of the analog thermocouple output circuit provided by an embodiment of the present invention;

[0062] Figure 4 Schematic diagram of the voltage division acquisition circuit provided by an embodiment of the present invention;

[0063] Figure 5 One of the schematic diagrams of the detection system of a fire extinguishing and explosion suppression control box provided by an embodiment of the present invention;

[0064] Figure 6 Another schematic diagram of the detection system of a fire extinguishing and explosion suppression control box provided by an embodiment of the present invention;

[0065] Figure 7 The third schematic diagram of the detection system of a fire extinguishing and explosion suppression control box provided by an embodiment of the present invention. Detailed implementation manners

[0066] Next, the preferred embodiments of the present invention will be specifically described with reference to the accompanying drawings. The accompanying drawings form a part of this application and are used together with the embodiments of the present invention to explain the principle of the present invention, rather than to limit the scope of the present invention.

[0067] 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 Figure 1 shown, the detection method includes:

[0068] Step S101: sequentially detect whether the working condition switching switch circuits corresponding to each compartment monitored by the fire extinguishing and explosion suppression control box are normal; if the working condition switching switch circuit corresponding to a certain compartment is abnormal, output the information of the failure of the working condition switching switch circuit corresponding to that compartment, and continue the subsequent detection after repairing the working condition switching switch circuit corresponding to that compartment.

[0069] Specifically, each compartment includes a crew compartment, a power compartment, and a bottom compartment. The crew compartment includes two working condition states: wartime and peacetime. The power compartment includes two working condition states: automatic and semi-automatic. The bottom compartment includes two working condition states: automatic and semi-automatic.

[0070] Preferably, before step S101, the detection method further includes:

[0071] Connect the CAN communication transceiver module in the detection system to the CAN communication interface of the fire extinguishing and explosion suppression control box. The CAN communication transceiver module sends any CAN instruction information to the CAN communication interface. If the CAN frame information returned by the CAN communication interface can be received, it indicates that the CAN communication interface is normal. Otherwise, output the information of the failure of the CAN communication interface, and continue the subsequent detection after repairing the CAN communication interface.

[0072] Specifically, successively detecting whether the working condition switching switch circuits corresponding to the respective compartments monitored by the fire extinguishing and explosion suppression control box are normal includes:

[0073] Connecting the analog working condition circuit of the detection system to the working condition switch control interface corresponding to a certain compartment in the fire extinguishing and explosion suppression control box, and controlling the change of the working condition state corresponding to this compartment through the analog working condition circuit;

[0074] Receiving the CAN frame information sent by the CAN communication interface, parsing the CAN frame information, and obtaining the CAN parameter information;

[0075] Comparing the working condition state information corresponding to this compartment in the CAN parameter information with the working condition state information corresponding to this compartment before the change of the working condition state. If the two working condition state information corresponding to this compartment are consistent, output the information of the fault of the working condition switching switch circuit corresponding to this compartment.

[0076] Specifically, the CAN parameter information includes one or more of the following:

[0077] Internal number information of the control box;

[0078] Alarm information of the crew compartment;

[0079] Alarm information of the power compartment;

[0080] Alarm information of the bottom compartment;

[0081] Working condition state information of the crew compartment;

[0082] Working condition state information of the power compartment;

[0083] Working condition state information of the bottom compartment.

[0084] Specifically, as Figure 2 shown, the analog working condition circuit includes a second inverter, a second resistor, a second power transistor, a second diode, and a second electromagnetic relay;

[0085] The input end of the second inverter is used to receive a control instruction, the output end is connected to one end of the second resistor, the other end of the second resistor is connected to the INPUT port of the second power transistor, the drain port of the second power transistor is connected to the positive pole of the second diode and one end of the control coil of the second electromagnetic relay, and the negative pole of the second diode is connected to the power supply and the other end of the control coil of the second electromagnetic relay;

[0086] The static contact of the second electromagnetic relay is grounded, and the moving contact of the second electromagnetic relay is connected to the working condition switch control interface of the fire extinguishing and explosion suppression control box.

[0087] Step S102: Sequentially send the working condition switching instructions corresponding to each compartment to the fire extinguishing and explosion suppression control box, and control each compartment to be in different working condition states through the working condition switching switch circuits corresponding to each compartment.

[0088] Exemplarily: The fire extinguishing and explosion suppression control box is used to monitor three compartments, which can be the crew compartment, the bottom compartment, and the power compartment respectively. When it is necessary to detect the fire extinguishing and explosion suppression control box, the working condition states corresponding to the three compartments are controlled sequentially. After determining the working condition state corresponding to a certain compartment, the detection of this compartment under this working condition state is carried out.

[0089] When switching the working condition state of the crew compartment, connect the analog working condition circuit of the detection system to the working condition switch control interface corresponding to the crew compartment of the fire extinguishing and explosion suppression control box, such as Figure 2 shown. The moving contact of the electromagnetic relay RL2 of the analog working condition circuit is used to connect the working condition switch control interface corresponding to the crew compartment of the fire extinguishing and explosion suppression control box. By inputting different IO1 into the analog working condition circuit, the moving contact of the electromagnetic relay RL2 can be grounded or not grounded. When the moving contact of the electromagnetic relay RL is grounded under the condition that the working condition switching switch circuit of the crew compartment is normal, the crew compartment of the fire extinguishing and explosion suppression control box is in the normal working condition state, and when it is not grounded, the crew compartment of the fire extinguishing and explosion suppression control box is in the wartime working condition state. The grounding or non-grounding of the moving contact of the electromagnetic relay RL2 is the control instruction for switching the working condition corresponding to the crew compartment.

[0090] Step S103: Conduct the following detections on the fire extinguishing and explosion suppression control box under different working condition states of each compartment: Send analog fire alarm information to the fire extinguishing and explosion suppression control box; Receive the CAN frame information sent by the fire extinguishing and explosion suppression control box through the CAN communication interface and parse the CAN frame information to obtain CAN parameter information; Receive the voltage information sent by the fire extinguishing and explosion suppression control box through the voltage control signal output interface; Determine the fault point of the fire extinguishing and explosion suppression control box according to the CAN parameter information and the voltage information.

[0091] Preferably, when detecting under different working condition states of the crew compartment, the analog fire alarm information is the CAN fire alarm instruction information of the crew compartment;

[0092] The determination of the fault point of the fire extinguishing and explosion suppression control box according to the CAN parameter information and the voltage information includes:

[0093] If the CAN parameter information does not include the alarm information of the crew compartment, output the information of the fault of the CAN fire alarm information input circuit corresponding to the crew compartment;

[0094] Compare the voltage information with the normal standard drive index of the fire extinguishing and explosion suppression control box. If the difference between the two exceeds the threshold range, output the information of the fault of the voltage control signal output circuit corresponding to the voltage information.

[0095] During implementation, since the crew cabin has two working conditions, namely wartime and peacetime, the detection system stores the standard drive indicators for these two working conditions. Under each working condition, by comparing the received voltage information with the standard drive indicators for that working condition, it can be determined whether the voltage control signal output circuit corresponding to the crew cabin in the control box is faulty.

[0096] Preferably, when performing detection under different working conditions of the power cabin, the simulated fire alarm information is the power cabin CAN fire alarm command information;

[0097] Determining the fault points of the fire extinguishing and explosion suppression control box based on the CAN parameter information and the voltage information includes:

[0098] If the CAN parameter information does not include the alarm information of the power cabin, then output information indicating a fault in the CAN fire alarm information input circuit corresponding to the power cabin;

[0099] Compare the voltage information with the normal standard drive indicators of the fire extinguishing and explosion suppression control box. If the difference between the two exceeds the threshold range, then output information indicating a fault in the voltage control signal output circuit corresponding to the voltage information.

[0100] During implementation, since the power cabin has two working conditions, namely automatic and semi-automatic, the detection system stores the standard drive indicators for these two working conditions. Under each working condition, by comparing the received voltage information with the standard drive indicators for that working condition, it can be determined whether the voltage control signal output circuit corresponding to the power cabin in the control box is faulty.

[0101] When performing detection under different working conditions of the bottom cabin, the simulated fire alarm information is the simulated thermocouple signal, and the simulated thermocouple signal is sent to the thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box through the simulated thermocouple output circuit of the detection system;

[0102] Determining the fault points of the fire extinguishing and explosion suppression control box based on the CAN parameter information and the voltage information includes:

[0103] If the CAN parameter information does not include the alarm information of the bottom cabin, then output information indicating a fault in the thermocouple voltage signal input circuit corresponding to the bottom cabin;

[0104] Compare the voltage information with the normal standard drive indicators of the fire extinguishing and explosion suppression control box. If the difference between the two exceeds the threshold range, then output information indicating a fault in the voltage control signal output circuit corresponding to the voltage information.

[0105] During implementation, since the bottom cabin has two working conditions, automatic and semi-automatic, the detection system stores the standard drive indicators for these two working conditions. Under each working condition, by comparing the received voltage information with the standard drive indicators for that working condition, it can be determined whether the voltage control signal output circuit corresponding to the bottom cabin in the control box is faulty.

[0106] Specifically, as Figure 3 shown, the analog thermocouple output circuit includes a first inverter, a first resistor, a first power transistor, a first diode, a first electromagnetic relay, and a current-limiting resistor;

[0107] The input end of the first inverter is used to receive a control instruction, and the output end is connected to one end of the first resistor. The other end of the first resistor is connected to the INPUT port of the first power transistor. The drain port of the first power transistor is connected to the positive pole of the first diode and one end of the control coil of the first electromagnetic relay. The negative pole of the first diode is connected to the power supply and the other end of the control coil of the first electromagnetic relay;

[0108] The static contact of the first electromagnetic relay is connected to one end of the current-limiting resistor, and the other end of the current-limiting resistor is used to receive the analog thermocouple signal; the moving contact of the first electromagnetic relay is connected to the thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box.

[0109] Specifically, the receiving of the voltage information sent by the fire extinguishing and explosion suppression control box through the voltage control signal output interface includes:

[0110] Connect the voltage division acquisition circuit of the detection system to the voltage control signal output interface of the fire extinguishing and explosion suppression control box, and receive the voltage information through the voltage division acquisition circuit;

[0111] The voltage division acquisition circuit includes a pull-up resistor R1, a voltage division resistor R2, and a voltage division resistor R3;

[0112] One end of the voltage division resistor R2 is connected to one end of the pull-up resistor R1 and serves as the input end of the voltage division acquisition circuit to be connected to the voltage control signal output interface of the fire extinguishing and explosion suppression control box. The other end of the pull-up resistor R1 is connected to the pull-up power supply;

[0113] The other end of the voltage division resistor R2 serves as the output end of the voltage division acquisition circuit; the other end of the voltage division resistor R2 is also connected to one end of the voltage division resistor R3, and the other end of the voltage division resistor R3 is grounded.

[0114] 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 Figure 5As shown in the figure, the detection system includes a Controller Area Network (CAN) communication transceiver module, a data acquisition module, a data analysis and processing module, and a human-machine interaction module;

[0115] The human-machine interaction module is connected to the CAN communication transceiver module and sends a fire alarm instruction to the CAN communication transceiver module;

[0116] The CAN communication transceiver module is used to generate corresponding CAN instruction information according to the fire alarm instruction, send the CAN instruction information to the CAN communication interface of the fire extinguishing and explosion suppression control box, receive the CAN frame information sent by the fire extinguishing and explosion suppression control box through the CAN communication transceiver module, parse the CAN frame information to obtain CAN parameter information, and send the CAN parameter information to the data analysis and processing module;

[0117] The data acquisition module is connected to the voltage control signal output interface of the fire extinguishing and explosion suppression control box, and is used to collect the voltage information output by the fire extinguishing and explosion suppression control box and send the voltage information to the data analysis and processing module;

[0118] The data analysis and processing module analyzes and processes the CAN parameter information and the voltage information to obtain the detection result of the fire extinguishing and explosion suppression control box, and sends the detection result to the human-machine interaction module;

[0119] The human-machine interaction module is also used to display the detection result of the fire extinguishing and explosion suppression control box.

[0120] As Figure 5 shown in the figure, the fire extinguishing and explosion suppression control box includes a CAN communication interface and a voltage control signal output interface.

[0121] Specifically, the CAN communication interface is connected to the CAN communication transceiver module of the detection system through the 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 instruction information to the fire extinguishing and explosion suppression control box.

[0122] It should be noted that after connecting the CAN communication interface of the fire extinguishing and explosion suppression control box to the CAN communication transceiver module of the detection system, to detect whether the CAN communication interface of the fire extinguishing and explosion suppression control box is normal, a CAN instruction 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, it means that the CAN communication interface is normal, otherwise it means that the CAN communication interface has a fault and needs to be repaired; after the repair, ensure that the CAN communication interface is normal, and then use the detection system of the present application to detect other parts of the fire extinguishing and explosion suppression control box.

[0123] Specifically, the human-machine interaction module can provide a human-machine interaction interface, a command operation interface, and a fault display interface for the user. Through the human-machine interaction interface, the user can selectively detect various parts of the fire extinguishing and explosion suppression control box.

[0124] To facilitate the understanding of the working principle of the detection system, the working principle of the fire extinguishing and explosion suppression control box is introduced here first:

[0125] The fire extinguishing and explosion suppression control box receives fire alarm information through the CAN communication interface. When the fire alarm information is received, it will send out CAN frame information through the CAN communication interface for alarm, and output voltage information through the voltage control signal output interface to control the relevant fire extinguishing equipment in the fire alarm area to work.

[0126] Exemplarily, if a fire alarm information is sent from the passenger compartment, after the fire extinguishing and explosion suppression control box analyzes the fire alarm information, it can obtain the information that a fire has occurred in the passenger compartment. Thus, the fire extinguishing and explosion suppression control box will make the following responses to the fire in the passenger compartment: on the one hand, send out CAN frame information through the CAN communication interface for alarm; on the other hand, output a voltage signal through the voltage control instruction output interface to control the corresponding fire extinguishing equipment in the passenger compartment to respond.

[0127] Based on the above working principle of the fire extinguishing and explosion suppression control box, in this application, the user inputs a fire alarm instruction through the human-machine interaction module. The human-machine interaction module sends the fire alarm instruction to the CAN communication transceiver module. The CAN communication transceiver module generates corresponding CAN instruction information according to the fire alarm instruction, and sends the CAN instruction information to the CAN communication interface to simulate the fire alarm information received by the fire extinguishing and explosion suppression control box. After receiving the CAN instruction information, the fire extinguishing and explosion suppression control box will make the following responses: first, send out an alarm information to the outside through the CAN communication interface in the form of CAN frame information; then, output a voltage signal through the voltage control instruction output interface to control the relevant fire extinguishing equipment to act.

[0128] To detect whether the fire extinguishing and explosion suppression control box can make the above responses normally, in this application, on the one hand, the CAN communication transceiver module receives the CAN frame information sent by the CAN communication interface of the control box. The CAN communication transceiver module analyzes the CAN frame information to obtain CAN parameter information, and sends the CAN parameter information to the data analysis and processing module. On the other hand, the data acquisition module collects the voltage signal output by the voltage control instruction output interface of the control box, and sends the voltage signal to the data analysis and processing module.

[0129] The data analysis and processing module analyzes and processes the CAN parameter information and voltage information to obtain the detection result of the fire extinguishing and explosion suppression control box, and sends the detection result to the human-machine interaction module, which can be used to display the detection result of the fire extinguishing and explosion suppression control box.

[0130] Preferably, the CAN parameter information includes one or more of the following:

[0131] The internal number information of the control box;

[0132] The alarm information of the passenger compartment;

[0133] The alarm information of the power compartment;

[0134] The alarm information of the bottom compartment;

[0135] The working condition information of the passenger compartment;

[0136] The working condition information of the power compartment;

[0137] The working condition information of the bottom compartment.

[0138] It should be noted that the alarm information of the passenger compartment includes the alarm time of the fire extinguishing and explosion suppression control box for a fire in the passenger compartment, the alarm information of the power compartment includes the alarm time of the fire extinguishing and explosion suppression control box for a fire in the power compartment, and the alarm information of the bottom compartment includes the alarm time of the fire extinguishing and explosion suppression control box for a fire in the bottom compartment.

[0139] After the data analysis and processing module receives the alarm time of each compartment and the sending time of the alarm instruction, it can calculate to determine the response time of the fire extinguishing and explosion suppression control box for a fire in each compartment, and then compare with the standard response time of each compartment to determine whether the response time of the fire extinguishing and explosion suppression control box to the fire signal in each compartment is normal, and display the detection result of whether the response time is normal in the human-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 information.

[0140] In implementation, the embodiment of the present invention sends CAN instruction information containing fire alarm information to the fire extinguishing and explosion suppression control box through the CAN communication transceiver module. After receiving the CAN instruction information, the fire extinguishing and explosion suppression control box makes a response. On the one hand, it sends CAN frame information to the CAN communication transceiver module, and on the other hand, it sends a control voltage signal for controlling the fire extinguishing equipment in each compartment. The detection system can receive the CAN frame information and voltage signal, and then use the data analysis and processing module to analyze and process to determine the fault point of the fire extinguishing and explosion suppression control box.

[0141] It should be noted that when a fault occurs in the CAN fire alarm information input circuit in the fire extinguishing and explosion suppression control box, no matter how many CAN fire alarm command messages the detection system sends to the fire extinguishing and explosion suppression control box, the fire extinguishing and explosion suppression control box will not respond to the CAN fire alarm command message. Thus, it can be determined that a fault has occurred in the CAN fire alarm information input circuit.

[0142] When the CAN fire alarm information input circuit is normal, after receiving the CAN command message, the fire extinguishing and explosion suppression control box, on the one hand, feeds back an alarm message to the CAN communication transceiver module for the CAN command message. On the other hand, the fire extinguishing and explosion suppression control box sends voltage information for controlling the fire extinguishing equipment in each compartment to the data acquisition module of the detection system through the voltage control signal output interface, and by comparing this voltage information with the normal standard driving index, it can be determined whether there is a fault in the voltage control signal output circuit for controlling the fire extinguishing equipment in each compartment in the fire extinguishing and explosion suppression control box.

[0143] Compared with the prior art, the detection system of the fire extinguishing and explosion suppression control box provided by the embodiment of the present invention can control the fire alarm status of the compartments controlled by the fire extinguishing and explosion suppression control box through the CAN communication transceiver module, and by receiving the CAN frame information and voltage information sent by the fire extinguishing and explosion suppression control box, analyzing and processing the CAN frame information and voltage information, it can realize the automatic detection of each fault point of the fire extinguishing and explosion suppression control box.

[0144] Furthermore, the data acquisition module includes a plurality of signal acquisition circuits, and each signal acquisition circuit is used to acquire a path of voltage information output by the fire extinguishing and explosion suppression control box.

[0145] Specifically, as Figure 6 shown, the data acquisition module includes signal acquisition circuit 1, signal acquisition circuit 2... and signal acquisition circuit N, and each signal acquisition circuit corresponds 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 for controlling the fire extinguishing equipment in each compartment after the fire extinguishing and explosion suppression control box alarms. Thus, 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 between the two is within the threshold range, it indicates that the voltage control signal output circuit corresponding to this path of voltage information is normal. On the contrary, if the difference between the two exceeds the threshold range, it indicates that there is a fault in the voltage control signal output circuit corresponding to this path of voltage information.

[0146] Preferably, the signal acquisition circuit is a voltage division acquisition circuit, and the voltage division acquisition circuit includes a pull-up resistor R1, a voltage division resistor R2, and a voltage division resistor R3;

[0147] One end of the voltage-dividing resistor R2 is connected to one end of the pull-up resistor R1 and serves as the input end of the voltage-dividing acquisition circuit to be connected to the voltage control signal output interface of the fire extinguishing and explosion suppression control box. The other end of the pull-up resistor R1 is connected to the pull-up power supply;

[0148] The other end of the voltage-dividing resistor R2 serves as the output end of the voltage-dividing acquisition circuit and is connected to the data analysis and processing module; the other end of the voltage-dividing resistor R2 is also connected to one end of the voltage-dividing resistor R3, and the other end of the voltage-dividing resistor R3 is grounded.

[0149] Specifically, as Figure 4 shown, OUT4 is the voltage signal output by the voltage control signal output interface of the fire extinguishing and explosion suppression control box. One end of R2 is connected to receive this voltage signal OUT4. The 5V port is the pull-up power supply, and the Al1 port is an input end of the data analysis and processing module. The other end of R2 serves as the output end of the voltage-dividing acquisition circuit, and the received OUT4 is divided by the voltage-dividing resistors R2 and R3 and output to the data analysis and processing module.

[0150] In implementation, the embodiment of the present invention divides the abnormal voltage information or excessive voltage information sent by the fire extinguishing and explosion suppression control box through the voltage-dividing acquisition circuit to protect the circuit of the detection system, which can improve the safety of the detection system of the fire extinguishing and explosion suppression control box.

[0151] Furthermore, the detection system further includes a data output module;

[0152] The data output module is connected to the human-computer interaction module and the fire extinguishing and explosion suppression control box, and is used to receive the analog instruction sent by the human-computer interaction module, and send an analog signal to the fire extinguishing and explosion suppression control box or directly control the switch state of the fire extinguishing and explosion suppression control box according to the analog instruction to detect the fire extinguishing and explosion suppression control box.

[0153] Specifically, as Figure 7 shown, the user can send an analog instruction through the human-computer interaction module. After the data output module receives the analog instruction, it sends an analog signal to the fire extinguishing and explosion suppression control box or directly controls the switch state of the fire extinguishing and explosion suppression control box according to the analog instruction to detect the fire extinguishing and explosion suppression control box.

[0154] It is worth noting that the switch state of the fire extinguishing and explosion suppression control box can be controlled by the switch on the fire extinguishing and explosion suppression control box or by the data output module provided by the embodiment of the present invention.

[0155] Preferably, as Figure 7 shown, the data output module includes an analog thermocouple output circuit and a thermocouple conversion module; the analog instruction includes an analog thermocouple instruction; the analog signal includes an analog thermocouple signal;

[0156] The thermocouple conversion module is connected to the human-machine interaction module, and is configured to receive the analog thermocouple instruction sent by the human-machine interaction module, generate a first control instruction signal and the analog thermocouple signal according to the analog thermocouple instruction, and send the first control instruction signal and the analog thermocouple signal to the analog thermocouple output circuit;

[0157] The analog thermocouple output circuit sends the analog thermocouple signal to the thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box under the control of the first control instruction signal.

[0158] It should be noted that the fire extinguishing and explosion suppression control box can receive the voltage change curve output by an external thermocouple through the thermocouple voltage signal input interface. In the embodiment of the present invention, the voltage change curve output by the thermocouple is simulated by the analog thermocouple signal, and the analog thermocouple signal is sent to the thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box. Whether the fire extinguishing and explosion suppression control box responds to the analog thermocouple signal can be used to detect whether there is a fault in the thermocouple voltage signal input circuit in the fire extinguishing and explosion suppression control box.

[0159] Under normal circumstances, if the voltage change curve output by the thermocouple indicates normal temperature and no fire occurs, the fire extinguishing and explosion suppression control box will not give an alarm after making this judgment and continue to monitor; if the voltage change curve output by the thermocouple represents too high temperature and a fire occurs, the fire extinguishing and explosion suppression control box will give an alarm after making this judgment. After confirming the alarm, on the one hand, it sends CAN frame information including alarm information through the CAN communication interface, and on the other hand, it outputs voltage information through the voltage control signal output interface.

[0160] Preferably, the analog thermocouple output circuit includes a first inverter, a first resistor, a first power transistor, a first diode, a first electromagnetic relay, and a current limiting resistor;

[0161] The input end of the first inverter is used to receive the first control instruction signal, the output end is connected to one end of the first resistor, the other end of the first resistor is connected to the INPUT port of the first power transistor, the drain port of the first power transistor is connected to the positive electrode of the first diode and one end of the control coil of the first electromagnetic relay, and the negative electrode of the first diode is connected to the power supply and the other end of the control coil of the first electromagnetic relay;

[0162] The static contact of the first electromagnetic relay is connected to one end of the current limiting resistor, and the other end of the current limiting resistor is used to receive the analog thermocouple signal; the moving contact of the first electromagnetic relay is connected to the thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box.

[0163] Specifically, asFigure 3 As shown, IO2 is the first control instruction signal, AO0 is the analog thermocouple signal, the HR1+ port is the thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box, and V-24V is the power supply.

[0164] Exemplarily: The input terminal 5A of the first inverter U4E is used to receive the first control instruction signal IO2, the output terminal 5Y is used to connect one end of the first resistor R16, the other end of the first resistor R16 is connected to the INPUT port of the first power transistor U3, the drain port of the first power transistor U3 is connected to the positive pole of the first diode D1 and one end 2 of the control coil of the first electromagnetic relay RL1, and the negative pole of the first diode D1 is connected to the power supply and the other end of the control coil of the first electromagnetic relay RL1; The static contact 3 of the first electromagnetic relay RL1 is connected to one end of the current-limiting resistor, and the other end of the current-limiting resistor is used to receive the analog thermocouple signal; The moving contact 4 of the first electromagnetic relay is connected to the thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box.

[0165] Exemplarily: The first inverter U4E can be of the 74HC14 model, and the first power transistor U3 can be of the BTS3018 model.

[0166] Furthermore, the data output module includes an analog working condition circuit and a working condition conversion module; the analog instruction includes an analog working condition instruction;

[0167] The working condition conversion module is connected to the human-machine interaction module, and is used to receive the analog working condition instruction sent by the human-machine interaction module, generate a second control instruction signal according to the analog working condition instruction, and send the second control instruction signal to the analog working condition circuit;

[0168] The analog working condition circuit is connected to the working condition switch control interface of the fire extinguishing and explosion suppression control box, and the analog 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.

[0169] Specifically, as Figure 7 shown, the user can send an analog working condition instruction to the working condition conversion module through the human-machine interaction module. The working condition conversion module generates a second control instruction signal according to the analog working condition instruction. The analog working condition circuit receives the second control instruction signal and controls the working condition switch controlled by the analog working condition circuit.

[0170] It should be noted that when the circuit of the working condition switch of the fire extinguishing and explosion suppression control box is normal, when the user sends a working condition change instruction to the fire extinguishing and explosion suppression control box through the human-machine interaction module, such as changing from wartime to peacetime, or from automatic to semi-automatic, after receiving the working condition change instruction, the fire extinguishing and explosion suppression control box will send CAN frame information to the CAN communication transceiver module of the detection system through the CAN communication interface. The CAN communication transceiver module analyzes the CAN frame information to obtain CAN parameter information, which includes the working condition status information of the fire extinguishing and explosion suppression control box, so as to determine whether the working condition status of the fire extinguishing and explosion suppression control box has changed. If the working condition switching switch circuit of the fire extinguishing and explosion suppression control box is abnormal, the working condition status of the fire extinguishing and explosion suppression control box will not change. Therefore, it is possible to judge whether the corresponding working condition switching switch circuit is normal according to the CAN parameters parsed from the received CAN frame information.

[0171] Preferably, the simulated working condition circuit includes a second inverter, a second resistor, a second power transistor, a second diode and a second electromagnetic relay;

[0172] The input end of the second inverter is used to receive the second control instruction signal, the output end is connected to one end of the second resistor, the other end of the second resistor is connected to the INPUT port of the second power transistor, the drain port of the second power transistor is connected to the positive pole of the second diode and one end of the control coil of the second electromagnetic relay, and the negative pole of the second diode is connected to the power supply and the other end of the control coil of the second electromagnetic relay;

[0173] The static contact of the second electromagnetic relay is grounded, and the moving contact of the second electromagnetic relay is connected to the working condition switch control interface of the fire extinguishing and explosion suppression control box.

[0174] It should be noted that the working condition switch control interface of the fire extinguishing and explosion suppression control box is connected to the working condition switching switch circuit in the fire extinguishing and explosion suppression control box. When the working condition switching switch circuit in the fire extinguishing and explosion suppression control box is normal, if the state of the working condition switch control interface of the fire extinguishing and explosion suppression control box is changed, the working condition in the fire extinguishing and explosion suppression control box will change accordingly.

[0175] Specifically, as Figure 2 shown, IO1 is the second control instruction signal, GND is the grounding terminal, KEY1 is the working condition switch control interface of the fire extinguishing and explosion suppression control box, and V-24V is the power supply.

[0176] Exemplarily, the second control instruction signal IO1 is input into the input terminal 6A of the second inverter U2F, output from the output terminal 6Y, passes through the second resistor R4, and is input into the INPUT port of the second power transistor U1. The gnd port of the second power transistor U1 is grounded. The drain port of the second power transistor U1 is simultaneously connected to the positive electrode of the second diode D2 and one end of the control coil of the second electromagnetic relay RL2. The other end of the control coil of the second electromagnetic relay RL2 and the negative electrode of the second diode D2 are connected to the power supply. When the second control instruction signal IO1 is a low-level signal, the static contact and the moving contact of the second electromagnetic relay RL2 will be connected, grounding the working condition switch control interface of the fire extinguishing and explosion suppression control box, thereby changing the state of the working condition switch and causing the working condition of the fire extinguishing and explosion suppression control box to change.

[0177] Exemplarily, the second inverter U2F can be of the 74HC14 model, and the second power transistor U1 can be of the BTS3018 model.

[0178] During implementation, the user sends an analog instruction to the data output module through the human-computer interaction module. The data output module can send an analog thermocouple signal to the fire extinguishing and explosion suppression control box or control the working condition change of the fire extinguishing and explosion suppression control box according to the analog instruction. Furthermore, based on the CAN frame information output by the fire extinguishing and explosion suppression control box through the CAN communication interface and the voltage information output through the voltage control signal output interface, it can be determined whether there is a fault in the working condition switching switch circuit of the fire extinguishing and explosion suppression control box and whether there is a fault in the thermocouple voltage signal input circuit of the fire extinguishing and explosion suppression control box.

[0179] Compared with the prior art, the detection system of the fire extinguishing and explosion suppression control box provided by the embodiment of the present invention includes a data output module through which an analog thermocouple output circuit, a thermocouple conversion module, an analog working condition circuit, and a working condition conversion module are included, which can detect the thermocouple voltage signal input circuit and the working condition switching switch circuit of the fire extinguishing and explosion suppression control box, and at the same time can automatically control the working condition switch and the analog thermocouple signal of the fire extinguishing and explosion suppression control box, improving the automation degree of the detection system of the fire extinguishing and explosion suppression control box and making it more rapid and convenient.

[0180] Furthermore, the data output module includes a plurality of the analog working condition circuits and the corresponding working condition conversion modules, and each of the analog working condition circuits and the corresponding working condition conversion modules independently controls one of the working condition switch control interfaces of the fire extinguishing and explosion suppression control box;

[0181] Among them, the working condition switch control interfaces of the fire extinguishing and explosion suppression control box include the war / peace switch interface of the crew compartment, the automatic / semi-automatic status switch interface of the power compartment, and the automatic / semi-automatic status switch interface of the bottom compartment.

[0182] It should be noted that when the fire extinguishing and explosion suppression control box monitors and alarms multiple compartments, there are multiple working condition switch control interfaces on the fire extinguishing and explosion suppression control box, and each working condition switch control interface corresponds to two working condition states of one compartment. The multiple compartments may include a crew compartment, a power compartment, and a bottom compartment. The working condition states of each compartment are different. The crew compartment includes two working condition states of wartime / peacetime, the power compartment includes two working condition states of automatic / semi-automatic, and the bottom compartment includes two working condition states of automatic / semi-automatic.

[0183] It should be noted that the data output module includes multiple analog working condition circuits and corresponding working condition conversion modules. Each analog working condition circuit and the corresponding working condition conversion module independently control one working condition switch control interface of the fire extinguishing and explosion suppression control box, which can control each working condition switch of the fire extinguishing and explosion suppression control box, and the switches are independently controlled from each other, which can reduce the risk of mutual interference and improve the authenticity of detection.

[0184] Compared with the prior art, the detection system of the fire extinguishing and explosion suppression control box provided by the embodiment of the present invention reduces the risk of mutual interference and improves the authenticity of detection by independently controlling one working condition switch control interface of the fire extinguishing and explosion suppression control box through each analog working condition circuit and the corresponding working condition conversion module.

[0185] It can be understood that the detection system involved in the detection method of the fire extinguishing and explosion suppression control box provided by the embodiment of the present invention may be the detection system of the fire extinguishing and explosion suppression control box provided by the embodiment of the present invention, or other detection systems that can achieve the same function. The detection system is not specifically limited herein.

[0186] Those skilled in the art can understand that all or part of the processes of implementing the above method embodiments can be completed by instructing relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. Among them, the computer-readable storage medium is a magnetic disk, an optical disk, a read-only memory, or a random access memory, etc.

[0187] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A detection method for a fire extinguishing and explosion suppression control box, characterized in that, The detection method includes: Sequentially detecting whether the working condition switching switch circuits corresponding to each compartment monitored by the fire extinguishing and explosion suppression control box are normal; if the working condition switching switch circuit corresponding to a certain compartment is abnormal, outputting the information of the fault of the working condition switching switch circuit corresponding to that compartment, and continuing the subsequent detection after repairing the working condition switching switch circuit corresponding to that compartment; Sequentially sending the working condition switching instructions corresponding to each compartment to the fire extinguishing and explosion suppression control box, and controlling each compartment to be in different working condition states through the working condition switching switch circuits corresponding to each compartment; Performing the following detections on the fire extinguishing and explosion suppression control box in different working condition states of each compartment: Sending simulated fire alarm information to the fire extinguishing and explosion suppression control box; Receiving the CAN frame information sent by the fire extinguishing and explosion suppression control box through the CAN communication interface and parsing the CAN frame information to obtain CAN parameter information; receiving the voltage information sent by the fire extinguishing and explosion suppression control box through the voltage control signal output interface; Determining the fault point of the fire extinguishing and explosion suppression control box according to the CAN parameter information and the voltage information; The sequentially detecting whether the working condition switching switch circuits corresponding to each compartment monitored by the fire extinguishing and explosion suppression control box are normal includes: Controlling the change of the working condition state of the working condition switch control interface corresponding to each compartment through the simulated working condition circuit of the detection system; Receiving the CAN frame information sent by the CAN communication interface, parsing the CAN frame information, and obtaining the CAN parameter information; Comparing the working condition state information corresponding to each compartment in the CAN parameter information with the working condition state information corresponding to each compartment before the change of the working condition state. If the two working condition state information corresponding to a certain compartment are consistent, outputting the information of the fault of the working condition switching switch circuit corresponding to that compartment.

2. The detection method of the fire extinguishing and explosion suppression control box according to claim 1, characterized in that Each of the compartments includes a crew compartment, a power compartment, and a bottom compartment. The crew compartment includes two working condition states, namely wartime and peacetime. The power compartment includes two working condition states, namely automatic and semi-automatic. The bottom compartment includes two working condition states, namely automatic and semi-automatic.

3. The detection method of the fire extinguishing and explosion suppression control box according to claim 2, wherein, Before sequentially detecting whether the working condition switching switch circuits corresponding to each compartment monitored by the fire extinguishing and explosion suppression control box are normal, the detection method further includes: Connecting the CAN communication transceiver module in the detection system to the CAN communication interface of the fire extinguishing and explosion suppression control box. The CAN communication transceiver module sends any CAN instruction information to the CAN communication interface. If the CAN frame information returned by the CAN communication interface can be received, it indicates that the CAN communication interface is normal. Otherwise, outputting the information of the fault of the CAN communication interface, and continuing the subsequent detection after repairing the CAN communication interface.

4. The detection method of the fire extinguishing and explosion suppression control box according to claim 3, characterized in that, The CAN parameter information includes one or more of the following: The internal number information of the control box; The alarm information of the crew compartment; The alarm information of the power compartment; The alarm information of the bottom compartment; The working condition state information of the crew compartment; The working condition state information of the power compartment; The working condition state information of the bottom compartment.

5. The detection method of the fire extinguishing and explosion suppression control box according to claim 4, wherein When detecting in different working condition states of the crew compartment, the simulated fire alarm information is the CAN fire alarm instruction information of the crew compartment; The determining the fault point of the fire extinguishing and explosion suppression control box according to the CAN parameter information and the voltage information includes: If the CAN parameter information does not include the alarm information of the passenger compartment, output the information of the CAN fire alarm information input circuit failure corresponding to the passenger compartment; Compare the voltage information with the normal standard drive index of the fire extinguishing and explosion suppression control box. If the difference between the two exceeds the threshold range, output the information of the voltage control signal output circuit failure corresponding to the voltage information; When detecting under different working conditions of the power compartment, the simulated fire alarm information is the power compartment CAN fire alarm command information; The determination of the fault point of the fire extinguishing and explosion suppression control box according to the CAN parameter information and the voltage information includes: If the CAN parameter information does not include the alarm information of the power compartment, output the information of the CAN fire alarm information input circuit failure corresponding to the power compartment; Compare the voltage information with the normal standard drive index of the fire extinguishing and explosion suppression control box. If the difference between the two exceeds the threshold range, output the information of the voltage control signal output circuit failure corresponding to the voltage information.

6. The detection method of the fire extinguishing and explosion suppression control box according to claim 4, characterized in that When detecting under different working conditions of the bottom compartment, the simulated fire alarm information is the simulated thermocouple signal, and the simulated thermocouple signal is sent to the thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box through the simulated thermocouple output circuit of the detection system; The determination of the fault point of the fire extinguishing and explosion suppression control box according to the CAN parameter information and the voltage information includes: If the CAN parameter information does not include the alarm information of the bottom compartment, output the information of the thermocouple voltage signal input circuit failure corresponding to the bottom compartment; Compare the voltage information with the normal standard drive index of the fire extinguishing and explosion suppression control box. If the difference between the two exceeds the threshold range, output the information of the voltage control signal output circuit failure corresponding to the voltage information.

7. The detection method of the fire extinguishing and explosion suppression control box according to claim 6, characterized in that, The simulated thermocouple output circuit includes a first inverter, a first resistor, a first power transistor, a first diode, a first electromagnetic relay and a current limiting resistor; The input end of the first inverter is used to receive the control command, the output end is connected to one end of the first resistor, the other end of the first resistor is connected to the INPUT port of the first power transistor, the drain port of the first power transistor is connected to the positive pole of the first diode and one end of the control coil of the first electromagnetic relay, and the negative pole of the first diode is connected to the power supply and the other end of the control coil of the first electromagnetic relay; The static contact of the first electromagnetic relay is connected to one end of the current limiting resistor, and the other end of the current limiting resistor is used to receive the simulated thermocouple signal; the moving contact of the first electromagnetic relay is connected to the thermocouple voltage signal input interface of the fire extinguishing and explosion suppression control box.

8. The detection method of the fire extinguishing and explosion suppression control box according to claim 1, characterized in that The simulated working condition circuit includes a second inverter, a second resistor, a second power transistor, a second diode and a second electromagnetic relay; The input terminal of the second inverter is used to receive a control instruction, and its output terminal is connected to one end of the second resistor. The other end of the second resistor is connected to the INPUT port of the second power transistor. The drain port of the second power transistor is connected to the positive electrode of the second diode and one end of the control coil of the second electromagnetic relay. The negative electrode of the second diode is connected to the power supply and the other end of the control coil of the second electromagnetic relay; The static contact of the second electromagnetic relay is grounded, and the moving contact of the second electromagnetic relay is connected to the working condition switch control interface of the fire extinguishing and explosion suppression control box.

9. The detection method of the fire extinguishing and explosion suppression control box according to claim 1, characterized in that, Receiving the voltage information sent by the fire extinguishing and explosion suppression control box through the voltage control signal output interface, including: Receiving the voltage information through the voltage division acquisition circuit of the detection system; The voltage division acquisition circuit includes 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 to one end of the pull-up resistor R1 and serves as the input terminal of the voltage division acquisition circuit to be connected to the voltage control signal output interface of the fire extinguishing and explosion suppression control box. The other end of the pull-up resistor R1 is connected to the pull-up power supply; The other end of the voltage division resistor R2 serves as the output terminal of the voltage division acquisition circuit; the other end of the voltage division resistor R2 is also connected to one end of the voltage division resistor R3, and the other end of the voltage division resistor R3 is grounded.

Images