Safety air bag controller for automobile
Technical Field
The utility model relates to an automotive electronics technical field, in particular to air bag controller for car.
Background
With the increasing functional and safety requirements of people on vehicles, more and more electronic controller units are introduced into automobiles, which causes technical change in automobile control, and the control idea of taking the automobiles as a whole leads the automobiles to develop towards networking, so that the network management of the whole automobiles becomes more and more important. At present, the traditional automobile safety airbag controller does not have a dormancy awakening function and cannot meet the requirement of network management of the whole automobile.
SUMMERY OF THE UTILITY MODEL
The problem to prior art exists, the utility model provides an air bag controller for car uses this air bag controller after, realizes putting in order car network management, reduces accuse electric quantity loss in the car, improves whole car managerial efficiency, and the interference killing feature is strong, and communication transmission speed is fast, is difficult for causing the fault problem that the mistake point explodes because of transmission instruction time delay takes place.
In order to solve the technical problem, the utility model discloses a technical scheme is:
the safety airbag controller for the automobile comprises a sensor unit, a controller unit, an explosion loop unit, a signal power supply unit, a communication unit, a dormancy awakening unit and a power supply conversion unit;
the sensor unit is used for detecting an acceleration signal and sending the acceleration signal to the controller unit;
the controller unit is used for judging whether the acceleration signal reaches a collision standard or not, and sending the acceleration signal to the detonation circuit unit when the acceleration signal reaches the collision standard;
the detonation loop unit is used for receiving a detonation instruction from the controller unit and executing detonation;
the signal power supply unit and the communication unit are used for sending a sleep and wake-up command to the sleep and wake-up unit;
the sleep awakening unit is used for receiving sleep and awakening instructions sent by the signal power supply unit and the communication unit and controlling the power supply conversion unit to enter a sleep or awakened state;
the power supply conversion unit is used for receiving a dormancy or awakening control instruction from the dormancy awakening unit and executing power supply operation on the sensor unit, the controller unit and the detonation circuit unit;
the input end of the dormancy awakening unit is in telecommunication connection with the signal power supply unit and the communication unit, the output end of the dormancy awakening unit is in telecommunication connection with the power supply conversion unit, the power supply conversion unit is in telecommunication connection with the sensor unit, the controller unit and the explosion loop unit, the input end of the controller unit is in telecommunication connection with the sensor unit, and the output end of the controller unit is in telecommunication connection with the explosion loop unit.
The utility model discloses a solve its technical problem, the further technical scheme who adopts is:
furthermore, the sensor unit, the controller unit, the explosion circuit unit, the signal power supply unit, the communication unit, the dormancy awakening unit and the power supply conversion unit are all in communication connection through a CAN bus.
Further, the sleep wake-up unit includes a voltage detection unit and a communication detection unit;
the voltage detection unit is used for detecting the constant voltage and the jump voltage of the signal power supply unit,
when the voltage detection unit detects that a constant voltage signal or a voltage jump signal exists on the signal power supply unit, the signal power supply unit enables the power supply conversion unit;
the communication detection unit is used for detecting any message instruction on the CAN bus and enabling the power supply conversion unit to output voltage to the sensor unit, the controller unit and the detonation circuit unit.
The utility model has the advantages that:
the utility model discloses a sensor unit, the controller unit, the loop element is exploded to the point, the signal power supply unit, the communication unit, dormancy awaken unit and power conversion unit all carry out the communication through the CAN bus and connect, constant voltage and jump voltage through voltage detection unit detection signal power supply unit, there is constant voltage signal or voltage jump signal on voltage detection unit detection signal power supply unit, the signal power supply unit enables the power conversion unit, when communication detection unit detects arbitrary message instruction (including dormancy instruction and awaken instruction etc.) on the CAN bus, CAN enable power conversion unit output or close voltage to the sensor unit equally, the controller unit is exploded the loop element with the point, CAN realize whole car network management, reduce the accuse electric quantity energy consumption in the car, improve whole car management efficiency;
two, the utility model discloses a CAN bus is as the communication means of air bag controller, and this communication mode interference killing feature is strong, and communication transmission speed is fast, is difficult for leading to air bag to take place the fault problem that the mistake point explodes because of instruction transmission delay.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
Fig. 1 is a schematic diagram illustrating connection of modules of an airbag controller for an automobile according to the present invention;
fig. 2 is a schematic diagram of a sleep wake-up unit of an airbag controller for an automobile according to the present invention;
the parts in the drawings are marked as follows:
the device comprises a sensor unit 1, a controller unit 2, an explosion circuit unit 3, a signal power supply unit 4, a communication unit 5, a sleep wakeup unit 6, a voltage detection unit 61, a communication detection unit 62, a power conversion unit 7 and a CAN bus 8.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and the advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure of the present invention. The present invention can also be implemented in other different ways, i.e. different modifications and changes can be made without departing from the scope of the present invention.
Examples
An airbag controller for an automobile, as shown in fig. 1 and 2, includes a sensor unit 1, a controller unit 2, an explosion circuit unit 3, a signal power supply unit 4, a communication unit 5, a sleep wake-up unit 6, and a power conversion unit 7;
the sensor unit is used for detecting an acceleration signal and sending the acceleration signal to the controller unit;
the controller unit is used for judging whether the acceleration signal reaches a collision standard or not, and sending the acceleration signal to the detonation circuit unit when the acceleration signal reaches the collision standard;
the detonation loop unit is used for receiving a detonation instruction from the controller unit and executing detonation;
the signal power supply unit and the communication unit are used for sending a sleep and wake-up command to the sleep and wake-up unit;
the sleep awakening unit is used for receiving sleep and awakening instructions sent by the signal power supply unit and the communication unit and controlling the power supply conversion unit to enter a sleep or awakened state;
the power supply conversion unit is used for receiving a dormancy or awakening control instruction from the dormancy awakening unit and executing power supply operation on the sensor unit, the controller unit and the detonation circuit unit;
the input end of the dormancy awakening unit is in telecommunication connection with the signal power supply unit and the communication unit, the output end of the dormancy awakening unit is in telecommunication connection with the power supply conversion unit, the power supply conversion unit is in telecommunication connection with the sensor unit, the controller unit and the explosion loop unit, the input end of the controller unit is in telecommunication connection with the sensor unit, and the output end of the controller unit is in telecommunication connection with the explosion loop unit.
The sensor unit, the controller unit, the explosion loop unit, the signal power supply unit, the communication unit, the dormancy awakening unit and the power supply conversion unit are all in communication connection through a CAN bus 8.
The sleep wake-up unit comprises a voltage detection unit 61 and a communication detection unit 62;
the voltage detection unit is used for detecting the constant voltage and the jump voltage of the signal power supply unit,
when the voltage detection unit detects that a constant voltage signal or a voltage jump signal exists on the signal power supply unit, the signal power supply unit enables the power supply conversion unit;
the communication detection unit is used for detecting any message instruction on the CAN bus and enabling the power supply conversion unit to output voltage to the sensor unit, the controller unit and the detonation circuit unit.
The utility model discloses a working process and theory of operation as follows:
the sensor unit of the utility model is used for detecting the acceleration signal and sending the acceleration signal to the controller unit;
the controller unit of the utility model is used for judging whether the acceleration signal reaches the collision standard, and when the acceleration signal reaches the collision standard, the acceleration signal is sent to the point explosion loop unit;
the utility model discloses an explosion loop unit is used for receiving the explosion instruction from the controller unit and executing the explosion;
the signal power supply unit and the communication unit of the utility model are both used for sending the dormancy and the awakening instruction to the dormancy awakening unit;
the dormancy awakening unit of the utility model is used for receiving the sending dormancy and awakening instruction from the signal power supply unit and the communication unit and controlling the power supply conversion unit to enter the dormant or awakened state;
the power supply conversion unit of the utility model is used for receiving the dormancy or awakening control instruction from the dormancy awakening unit and executing power supply operation to the sensor unit, the controller unit and the detonation loop unit;
the sensor unit, the controller unit, the detonation loop unit, the signal power supply unit, the communication unit, the dormancy awakening unit and the power supply conversion unit of the utility model are all in communication connection through the CAN bus;
the utility model discloses a dormancy awakening unit comprises a voltage detection unit and a communication detection unit;
the voltage detection unit of the utility model is used for detecting the constant voltage and the jump voltage of the signal power supply unit, when the voltage detection unit detects that the signal power supply unit has a constant voltage signal or a voltage jump signal, the signal power supply unit enables the power supply conversion unit;
the utility model discloses a communication detecting element is used for detecting the arbitrary message instruction on the CAN bus, CAN enable power conversion unit output voltage to sensor unit, controller unit and some explosion circuit unit.
The above is only the embodiment of the present invention, not so above only is the embodiment of the present invention, not so limiting the patent scope of the present invention, all the equivalent structures made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, all the same principles are included in the patent protection scope of the present invention.