Ignition control method, device and equipment for multi-chip safety air bag system and storage medium

Abstract

The invention relates to a multi-chip safety air bag system ignition control method, device and equipment and a storage medium, and is applied to the field of automobile safety air bags, and the method comprises the steps that communication information between a main control MCU and a plurality of ignition control chips is monitored, and the ignition control chips are controlled to enter a broadcast mode according to the communication information; a master control MCU is controlled to send an enabling instruction to the ignition control chips, and the ignition control chips are controlled to exit a broadcast mode; and the main control MCU is controlled to send an air bag explosion instruction to the ignition control chips in sequence. The method has the technical effects that hardware resources are saved, and data transmission time is saved, so that the influence of the explosion time of the air bag restraint system is reduced, and the safety of a driver and passengers is ensured as much as possible.

Description

Technical Field

[0001] This application relates to the field of automotive airbag technology, and in particular to an ignition control method, device, equipment and storage medium for a multi-chip airbag system. Background Technology

[0002] The airbag ignition control chip needs to receive data from the accelerometer, evaluate the acceleration data to determine if an acceleration anomaly has occurred, and activate the airbag if an anomaly is detected. After acquiring the acceleration data via the SPI bus, the main control MCU uses an algorithm to determine if a collision has occurred. If a collision has occurred, an ignition command is sent to deploy the airbag. This process requires the airbag to be activated first before the ignition command is received; otherwise, the airbag will not deploy.

[0003] In a multi-chip airbag control system, there are multiple airbag ignition chips, each operating independently. However, some information needs to be shared. For example, airbag activation requires simultaneous activation of multiple chips to ensure timely ignition. If this information is not shared, the main control MCU must sequentially send commands to configure each chip for airbag activation, which takes considerable time and may affect the airbag deployment time, ultimately compromising the safety of the occupants.

[0004] Currently, the ignition control method for multi-chip airbag systems is mainly achieved by adding an independent Arming signal line, referring to... Figure 1 In addition to normal SPI communication, an Arming signal line was added to activate multiple ignition control chips and control ignition in a timely manner. However, adding a separate Arming signal line requires additional signal lines, which leads to a higher consumption of hardware resources. Summary of the Invention

[0005] To help solve the problem that adding a separate Arming signal line requires additional signal lines and consumes a lot of hardware resources, this application provides an ignition control method, device, equipment and storage medium for a multi-chip airbag system.

[0006] In a first aspect, this application provides an ignition control method for a multi-chip airbag system, employing the following technical solution: The method includes: Monitor the communication information between the main control MCU and several ignition control chips, and control several of the ignition control chips to enter broadcast mode according to the communication information; The main control MCU sends enable commands to several ignition control chips and controls several ignition control chips to exit broadcast mode. The main control MCU sequentially sends airbag detonation commands to several of the aforementioned ignition control chips.

[0007] In one specific implementation scheme, monitoring the communication information between the main control MCU and several ignition control chips, and controlling the several ignition control chips to enter broadcast mode based on the communication information includes: Monitor the communication information between the main control MCU and several ignition control chips, and determine whether the airbag corresponding to the ignition control chip is activated based on the communication information; If the airbag corresponding to the ignition control chip is activated, then several of the ignition control chips are controlled to enter broadcast mode.

[0008] In one specific implementation, controlling the plurality of ignition control chips to enter broadcast mode includes: The main control MCU sends a first mode switching signal to several of the ignition control chips; The system controls several of the aforementioned ignition control chips to receive the first mode switching signal and enter broadcast mode.

[0009] In one specific implementation scheme, the main control MCU simultaneously sends a first mode switching signal to a plurality of the ignition control chips; The control of the plurality of ignition control chips to receive the first mode switching signal includes: The system controls several ignition control chips to simultaneously receive the first mode switching signal.

[0010] In one specific implementation, the main control MCU and several ignition control chips are connected via SPI communication; the first mode switching signal consists of the CS signal and the MOSI signal in the SPI communication connection, or consists of the CS signal in the SPI communication connection.

[0011] In one specific implementation scheme, controlling the plurality of ignition control chips to exit broadcast mode includes: The main control MCU simultaneously sends a second mode switching signal to several of the aforementioned ignition control chips; The system controls several of the aforementioned ignition control chips to receive the second mode switching signal and exit the broadcast mode.

[0012] In one specific implementation, the main control MCU and several ignition control chips are connected via SPI communication; the second mode switching signal consists of the CS signal and the MOSI signal in the SPI communication connection, or consists of the CS signal in the SPI communication connection.

[0013] Secondly, this application provides an ignition control device for a multi-chip airbag system, which adopts the following technical solution: the device includes: The broadcast mode switching module is used to monitor the communication information between the main control MCU and several ignition control chips, and control the several ignition control chips to enter the broadcast mode according to the communication information. The broadcast mode exit module is used to control the main control MCU to send enable commands to a number of ignition control chips and control the number of ignition control chips to exit the broadcast mode. The detonation command sending module is used to control the main control MCU to send airbag detonation commands to a number of ignition control chips in sequence.

[0014] Thirdly, this application provides a computer device that adopts the following technical solution: it includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as any of the above-described multi-chip airbag system ignition control methods.

[0015] Fourthly, this application provides a computer-readable storage medium that stores a computer program capable of being loaded by a processor and executing any of the above-mentioned multi-chip airbag system ignition control methods.

[0016] In summary, this application has the following beneficial technical effects: By adding a broadcast function, after detecting that an airbag has been activated, all ignition control chips are controlled to enter broadcast mode. During the broadcast phase, each ignition control chip only receives instructions from the main control MCU and does not return data, avoiding conflicts caused by multiple chips sending data to the MCU simultaneously. Using broadcast mode to enable multiple chips to simultaneously activate and ignite airbags avoids the need for additional signal lines that would consume hardware resources. Furthermore, by using broadcast mode to activate and ignite multi-chip airbags, the main control MCU only needs to read the airbag activation information from one ignition control chip and transmit it to all other ignition control chips. The entire process requires only two frames of data transmission, thus minimizing data transmission time while conserving hardware resources, thereby reducing the impact of airbag deployment time and ensuring the safety of occupants as much as possible. Attached Figure Description

[0017] Figure 1 This is a communication diagram used to illustrate the simultaneous ignition control of multiple chips in existing methods; Figure 2 This is a flowchart of the ignition control method for a multi-chip airbag system in an embodiment of this application; Figure 3 This is a communication diagram illustrating the simultaneous ignition control of multiple chips in an embodiment of this application; Figure 4 This is a schematic diagram of the signal flags for entering and exiting broadcast mode in the embodiments of this application; Figure 5 This is a schematic diagram of the activation and ignition control process of the airbag system in an embodiment of this application; Figure 6 This is a schematic diagram of the ignition control device of the multi-chip airbag system in the embodiments of this application; Figure 7 This is a schematic diagram used to illustrate a computer device in the embodiments of this application.

[0018] Reference numerals: 601, Broadcast mode switching module; 602, Broadcast mode exit module; 603, Detonation command sending module. Detailed Implementation

[0019] The following combination Figures 1-7 This application will be described in further detail.

[0020] This application discloses an ignition control method for a multi-chip airbag system. This method enables multi-chip airbag ignition control by improving the SPI communication method and adding a broadcast function to support simultaneous communication between the main control MCU and multiple airbag ignition control chips. This saves the time required for the main control MCU to send commands sequentially and also conserves hardware resources.

[0021] The airbag ignition control chip needs to receive data from the accelerometer, evaluate the acceleration data to determine if an acceleration anomaly has occurred, and activate the airbag if an anomaly is detected. After acquiring the acceleration data via the SPI bus, the main control MCU uses an algorithm to determine if a collision has occurred. If a collision has occurred, an ignition command is sent to deploy the airbag. This process requires the airbag to be activated first before the ignition command is received; otherwise, the airbag will not deploy.

[0022] In a multi-chip airbag control system, there are multiple airbag ignition chips, each operating independently. However, some information needs to be shared. For example, airbag activation requires simultaneous activation of multiple chips to ensure timely ignition. If this information is not shared, the main control MCU must sequentially send commands to configure each chip for airbag activation, which takes considerable time and may affect the airbag deployment time, ultimately compromising the safety of the occupants.

[0023] Currently, the ignition control method for multi-chip airbag systems is mainly achieved by adding an independent Arming signal line, referring to... Figure 1In addition to normal SPI communication, an Arming signal line is added to activate multiple ignition control chips and control ignition in a timely manner. However, adding a separate Arming signal line requires additional signal lines, which leads to the consumption of more hardware resources and is not conducive to the design and wiring of the hardware circuit board. In order to help save activation and ignition control time and save hardware resources, this application provides an ignition control method for a multi-chip airbag system.

[0024] Reference Figure 2 The method includes the following steps: S10 monitors the communication information between the main control MCU and several ignition control chips, and controls several ignition control chips to enter broadcast mode based on the communication information.

[0025] Specifically, a car may contain several ignition control chips to control airbags. These ignition control chips typically communicate with the main control MCU via SPI communication. The system monitors the communication information between the main control MCU and the multiple ignition control chips in real time and controls the chips to enter broadcast mode based on this information. Specifically, entering broadcast mode can be executed as follows: First, the communication information between the main control MCU and the ignition control chips is monitored, and it is determined whether the airbag corresponding to that ignition control chip is activated. The main control MCU communicates with the multiple ignition control chips to exchange data. When one airbag is activated, the corresponding ignition control chip transmits its activation data to the main control MCU, thus detecting whether the airbag corresponding to that ignition control chip is activated. If the airbag corresponding to that ignition control chip is not activated, no action is taken, and the monitoring of communication information between the main control MCU and the ignition control chips continues. If the airbag corresponding to that ignition control chip is activated, the ignition control chips are controlled to enter broadcast mode.

[0026] S20 controls the main MCU to send enable commands to several ignition control chips and controls several ignition control chips to exit broadcast mode.

[0027] Specifically, after all ignition control chips enter broadcast mode, the main MCU sends enable commands to several ignition control chips to activate them. These enable commands, also known as arming commands, confirm entry into broadcast mode and activate the corresponding ignition control chip. In an airbag system, this ensures that all prerequisites are met before the system is officially placed in a state ready to perform critical actions, i.e., all chips are activated. It's important to note that after entering broadcast mode, all ignition control chips, upon receiving the arming command from the main MCU, do not return corresponding data to the main MCU; they only receive the command. This is because the main MCU sends arming commands to multiple ignition control chips simultaneously. Prohibiting data return prevents conflicts caused by multiple chips returning data at the same time, thus avoiding multi-drive issues. Each chip, upon receiving the arming command, exits broadcast mode to prepare for subsequent ignition operations. Exiting broadcast mode can be automatic or occur after receiving a mode switching signal; users can configure this according to their needs.

[0028] S30 controls the main control MCU to send airbag deployment commands to several ignition control chips in sequence.

[0029] Specifically, after exiting broadcast mode, the main control MCU sequentially sends airbag deployment commands to several ignition control chips. Considering the selective nature of airbag deployment, different chips may need to deploy airbags with different information. Therefore, broadcast or other methods cannot be used to optimize communication time. Thus, after each ignition control chip receives the Arming command and completes the broadcast, it exits broadcast mode to facilitate subsequent ignition operations.

[0030] Reference Figure 3 This is a communication diagram illustrating the addition of a broadcast function in this embodiment. The main control MCU and several ignition control chips communicate normally via SRI. By adding a broadcast function, if the airbag corresponding to one of the ignition control chips is activated, the corresponding ignition control chip will transmit the activation information to the main control MCU. The main control MCU will then send a mode switching signal, and each chip will enter broadcast mode after receiving the mode switching signal.

[0031] In this application, a broadcast function is added. After detecting that an airbag has been activated, all ignition control chips are controlled to enter broadcast mode. During the broadcast phase, each ignition control chip only receives instructions from the main control MCU and does not return data, avoiding conflicts caused by multiple chips sending data to the MCU simultaneously. Using broadcast mode to enable multiple chips to simultaneously activate and ignite airbags avoids the need for additional signal lines that would consume hardware resources. Furthermore, by using broadcast mode to activate and ignite multi-chip airbags, the main control MCU only needs to read the airbag activation information from one ignition control chip and transmit it to all other ignition control chips. The entire process requires only two frames of data transmission, thus saving data transmission time while conserving hardware resources, thereby reducing the impact of airbag deployment time and maximizing the safety of occupants.

[0032] In one embodiment, controlling several ignition control chips to enter broadcast mode can be specifically performed as follows: First, the main control MCU sends a first mode switching signal to several ignition control chips. Then, the ignition control chips receive the first mode switching signal and enter broadcast mode. The first mode switching signal represents the switch of the communication mode between the main control MCU and each chip from normal communication mode to broadcast mode. It should be noted that the main control MCU sends the first mode switching signal to the ignition control chips simultaneously, and each ignition control chip receives the signal simultaneously to switch modes and enter broadcast mode, thus saving information sharing time. Furthermore, the main control MCU and the ignition control chips are connected via SPI communication; the first mode switching signal consists of the CS and MOSI signals in the SPI communication connection, or only the CS signal in the SPI communication connection.

[0033] In SPI communication, four signals are involved: CS, SCK, MOSI, and MISO. The CS (Chip Select) signal selects the corresponding device or chip by pulling the CS signal low or high; unselected chips remain in their original state to avoid bus conflicts. The SCK (Serial Clock) signal is the clock signal, synchronized with the master MCU's clock, used to synchronize data bits on MOSI and MISO. The MOSI (Master Out Slave In) signal represents the master-slave input signal, a unidirectional data line for the master MCU to send data to each ignition control chip. The MISO (Master In Slave Out) signal represents the master-slave output signal, a unidirectional data line for each ignition control chip to send data to the master MCU. The start and end flags of broadcast mode can be implemented by the CS signal alone, or by a combination of CS and MOSI signal level changes. Since there is no SCK signal change during the broadcast phase, it will not be recognized as an erroneous data frame by the chip.

[0034] In one embodiment, controlling several ignition control chips to exit broadcast mode can be specifically performed as follows: First, the main control MCU simultaneously sends a second mode switching signal to several ignition control chips. Then, the ignition control chips receive the second mode switching signal and exit broadcast mode. The second mode switching signal represents the switch of the communication mode between the main control MCU and each chip from broadcast mode to normal communication mode. Each chip simultaneously enters broadcast mode and simultaneously exits broadcast mode upon receiving the end-of-broadcast signal. Furthermore, the main control MCU and the ignition control chips are connected via SPI communication. The second mode switching signal consists of the CS and MOSI signals in the SPI communication connection, or solely the CS signal. The signal composition for exiting broadcast mode is the same as for entering broadcast mode; it can be implemented solely by the CS signal or by a combination of the CS and MOSI signals.

[0035] Reference Figure 4 This is a schematic diagram illustrating the entry and exit of broadcast mode in an embodiment of this application. In this embodiment, the flags for entering and exiting broadcast mode are jointly implemented by a CS signal and a MOSI signal, wherein the N_CS signal represents the CS signal corresponding to the Nth chip. Figure 4 The system pulls the CS signal of the Nth chip low and simultaneously pulls the MOSI signal high, transmitting the signal flag to the corresponding chip to control the chip to enter or exit broadcast mode.

[0036] The communication between the main control MCU and each chip controls each ignition control chip to enter broadcast mode. At the same time, it receives an enable command to activate the ignition control chip. After activating the ignition control chip, it exits the broadcast mode. Considering that ignition control is difficult to achieve uniformly through broadcast mode, it is necessary to exit the broadcast mode and then receive the ignition control command sent by the main control MCU in sequence to realize the ignition operation.

[0037] Reference Figure 5 This is a schematic diagram illustrating the activation and ignition control process of the airbag system in this embodiment. Assuming the airbag system contains three airbag ignition control chips, during normal communication between the main control MCU and each ignition control chip, the main control MCU detects that the airbag corresponding to ignition control chip 1 has been activated. The ignition control chip returns the corresponding activation information. Then, the three ignition control chips receive a mode switching signal flag sent by the main control MCU and enter broadcast mode. Each ignition control chip receives an ARMing command sent by the main control MCU to activate itself, without returning any data. After broadcasting, it exits broadcast mode, and the main control MCU sequentially sends ignition commands. Each ignition control chip sequentially executes the ignition commands and returns the corresponding command operation data, maintaining normal communication with the main control MCU. Figure 5 In this context, MOSI represents a unidirectional data line for data transmission from the main control MCU to each ignition control chip, and MISO represents a unidirectional data line for data transmission from each ignition control chip to the main control MCU. By adding a broadcast function, it is possible to save hardware resources and chip activation time, thereby minimizing the impact of airbag deployment time and ensuring the safety of occupants.

[0038] Figure 2 This is a flowchart illustrating the ignition control method for a multi-chip airbag system in one embodiment. It should be understood that, although... Figure 2 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows; unless explicitly stated otherwise, there is no strict order requirement for the execution of these steps, and they can be executed in other orders; and Figure 2 At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0039] Based on the above method, this application also discloses an ignition control device for a multi-chip airbag system.

[0040] Reference Figure 6 The device includes the following modules: The broadcast mode switching module 601 is used to monitor the communication information between the main control MCU and several ignition control chips, and control several ignition control chips to enter broadcast mode according to the communication information. The broadcast mode exit module 602 is used to control the main control MCU to send enable commands to several ignition control chips and control several ignition control chips to exit broadcast mode. The detonation command sending module 603 is used to control the main control MCU to send airbag detonation commands to several ignition control chips in sequence.

[0041] In one embodiment, the broadcast mode switching module 601 is specifically used to monitor the communication information between the main control MCU and several ignition control chips, and to determine whether the airbag corresponding to the ignition control chip is in an activated state based on the communication information; if the airbag corresponding to the ignition control chip is in an activated state, the several ignition control chips are controlled to enter the broadcast mode.

[0042] In one embodiment, the broadcast mode switching module 601 is specifically used to control the main control MCU to send a first mode switching signal to a plurality of ignition control chips; and to control the plurality of ignition control chips to receive the first mode switching signal and enter broadcast mode.

[0043] In one embodiment, in the broadcast mode switching module 601, the main control MCU simultaneously sends a first mode switching signal to several ignition control chips; controlling several ignition control chips to receive the first mode switching signal includes controlling several ignition control chips to simultaneously receive the first mode switching signal.

[0044] In one embodiment, in the broadcast mode switching module 601, the main control MCU and several ignition control chips are connected via SPI communication; the first mode switching signal is composed of the CS signal and the MOSI signal in the SPI communication connection, or is composed of the CS signal in the SPI communication connection.

[0045] In one embodiment, the broadcast mode exit module 602 is specifically used to control the main control MCU to simultaneously send a second mode switching signal to several ignition control chips; and to control several ignition control chips to receive the second mode switching signal and exit the broadcast mode.

[0046] In one embodiment, in the broadcast mode exit module 602, the main control MCU and several ignition control chips are connected via SPI communication; the second mode switching signal consists of the CS signal and the MOSI signal in the SPI communication connection, or consists of the CS signal in the SPI communication connection.

[0047] The multi-chip airbag system ignition control device provided in this application embodiment can be applied to the multi-chip airbag system ignition control method provided in the above embodiment. For relevant details, please refer to the above method embodiment. The implementation principle and technical effect are similar, and will not be repeated here.

[0048] It should be noted that the multi-chip airbag system ignition control device provided in this embodiment is only illustrated by the above-mentioned division of functional modules / units when performing multi-chip airbag system ignition control. In practical applications, the above functions can be assigned to different functional modules / units as needed, that is, the internal structure of the multi-chip airbag system ignition control device can be divided into different functional modules / units to complete all or part of the functions described above. Furthermore, the implementation method of the multi-chip airbag system ignition control method provided in the above method embodiment and the implementation method of the multi-chip airbag system ignition control device provided in this embodiment belong to the same concept. The specific implementation process of the multi-chip airbag system ignition control device provided in this embodiment is detailed in the above method embodiment and will not be repeated here.

[0049] This application also discloses a computer device.

[0050] Specifically, such as Figure 7 As shown, the computer device can be a desktop computer, laptop computer, handheld computer, or cloud server, etc. The computer device may include, but is not limited to, a processor and memory. The processor and memory can be connected via a bus or other means. The processor can be a Central Processing Unit (CPU). The processor can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, graphics processing units (GPUs), embedded neural network processing units (NPUs) or other dedicated deep learning coprocessors, discrete gate or transistor logic devices, discrete hardware components, or combinations of the above types of chips.

[0051] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as the program instructions / modules corresponding to the methods in the above embodiments of this application. The processor executes various functional applications and data processing by running the non-transitory software programs, instructions, and modules stored in the memory, thereby implementing the methods in the above embodiments. The memory may include a program storage area and a data storage area, wherein the program storage area may store the operating system and at least one application program required for a function; the data storage area may store data created by the processor, etc. Furthermore, the memory may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0052] This application also discloses a computer-readable storage medium.

[0053] Specifically, the computer-readable storage medium is used to store a computer program, which, when executed by a processor, implements the methods described in the above-described method embodiments. Those skilled in the art will understand that implementing all or part of the processes in the methods described in the above-described embodiments of this application can be accomplished by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments described above. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk drive (HDD), or solid-state drive (SSD), etc.; the storage medium can also include combinations of the above types of memory.

[0054] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An ignition control method for a multi-chip airbag system, characterized in that: The method includes: Monitor the communication information between the main control MCU and several ignition control chips, and control several of the ignition control chips to enter broadcast mode according to the communication information; The main control MCU sends enable commands to several ignition control chips and controls several ignition control chips to exit broadcast mode. The main control MCU sequentially sends airbag detonation commands to several of the aforementioned ignition control chips.

2. The method according to claim 1, characterized in that: The monitoring of communication information between the main control MCU and several ignition control chips, and the control of several ignition control chips to enter broadcast mode based on the communication information, includes: Monitor the communication information between the main control MCU and several ignition control chips, and determine whether the airbag corresponding to the ignition control chip is activated based on the communication information; If the airbag corresponding to the ignition control chip is activated, then several of the ignition control chips are controlled to enter broadcast mode.

3. The method according to claim 2, characterized in that: The control of several ignition control chips to enter broadcast mode includes: The main control MCU sends a first mode switching signal to several of the ignition control chips; The system controls several of the aforementioned ignition control chips to receive the first mode switching signal and enter broadcast mode.

4. The method according to claim 3, characterized in that: The main control MCU simultaneously sends a first mode switching signal to several of the ignition control chips; The control of the plurality of ignition control chips to receive the first mode switching signal includes: The system controls several ignition control chips to simultaneously receive the first mode switching signal.

5. The method according to claim 3, characterized in that: The main control MCU is connected to several ignition control chips via SPI communication; the first mode switching signal is composed of the CS signal and the MOSI signal in the SPI communication connection, or is composed of the CS signal in the SPI communication connection.

6. The method according to claim 1, characterized in that: The control of several ignition control chips to exit broadcast mode includes: The main control MCU simultaneously sends a second mode switching signal to several of the aforementioned ignition control chips; The system controls several of the aforementioned ignition control chips to receive the second mode switching signal and exit the broadcast mode.

7. The method according to claim 6, characterized in that: The main control MCU is connected to several ignition control chips via SPI communication; the second mode switching signal is composed of the CS signal and the MOSI signal in the SPI communication connection, or is composed of the CS signal in the SPI communication connection.

8. An ignition control device for a multi-chip airbag system, characterized in that: The device includes: The broadcast mode switching module (601) is used to monitor the communication information between the main control MCU and several ignition control chips, and control several ignition control chips to enter the broadcast mode according to the communication information. The broadcast mode exit module (602) is used to control the main control MCU to send enable commands to a plurality of ignition control chips and control the plurality of ignition control chips to exit the broadcast mode. The detonation command sending module (603) is used to control the main control MCU to send airbag detonation commands to a plurality of the aforementioned ignition control chips in sequence.

9. A computer device, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer program is stored that can be loaded by a processor and executed according to any one of claims 1 to 7.

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