CN215010724U

CN215010724U - Automobile collision remote help seeking device

Info

Publication number: CN215010724U
Application number: CN202121057363.0U
Authority: CN
Inventors: 王丽炜
Original assignee: Hangzhou Baoli Technology Co ltd
Current assignee: Hangzhou Baoli Technology Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-12-03
Anticipated expiration: 2031-05-17

Abstract

The embodiment of the utility model discloses long-range device of seeking help of car collision, it passes through the horizontal acceleration data and the vertical acceleration data of acceleration detection module real-time detection and output car, later carries out the filtering operation by host system, judges when the result surpasss the control strategy and sets for the threshold value and takes place the car collision and export collision warning message. The utility model discloses can effectively detect car collision accident and in time send the information of seeking help.

Description

Automobile collision remote help seeking device

Technical Field

The utility model relates to an automobile safety technical field especially relates to a car collision remote help device.

Background

In the conventional automobile collision detection technology, collision detection sensors are generally mounted on the inner sides of fenders on both sides of a vehicle body, under a headlamp bracket, on both sides of an engine radiator bracket, and the like. The occurrence of a collision at each location is detected by mounting various mechanical collision sensors. Common mechanical collision sensors include a rolling ball type collision sensor, a rolling shaft type collision sensor, an eccentric hammer type collision sensor, a mercury switch type collision sensor, a resistance strain gauge type collision sensor, a piezoelectric effect type collision sensor and the like, when detecting an automobile collision, corresponding sensors, such as the positions of a head, a body, a parking space and the like, must be installed in all directions, otherwise, the collision in the corresponding direction cannot be effectively detected. In addition, when a collision occurs, the airbag of the automobile pops up, and when some not very strong collisions occur, the signals sent by the collision sensors are filtered out as interference signals, so that all collisions cannot be detected.

SUMMERY OF THE UTILITY MODEL

The defect to prior art existence, the utility model provides a car collision long-range device of seeking help that the reliability is high.

For solving above technical problem, the utility model provides a long-range device of seeking help of car collision, including acceleration detection module and host system, acceleration detection module and host system connect, and acceleration detection module real-time detection and the horizontal acceleration data and the vertical acceleration data of output car, host system receive and handle acceleration horizontal acceleration data and vertical acceleration data, and when vertical acceleration data was less than and predetermines vertical acceleration threshold value and horizontal acceleration data and be greater than and predetermine horizontal acceleration threshold value, host system judged that car collision takes place and output collision warning message.

Furthermore, the acceleration detection module comprises an acceleration sensor, and a data interface of the acceleration sensor is connected with a data interface of the main control module.

Further, the acceleration sensor is an MMA8452, and the MMA8452 configures the following peripheral circuits: pin 1 is connected with an internal power supply and grounded through a capacitor C1, pin 2 is grounded through a capacitor C2, pin 4 is connected with the internal power supply and connected with a serial clock interface of a master control module through a resistor R1, pin 6 is connected with the internal power supply and connected with a serial data interface of the master control module through a resistor R2, pin 7 is grounded, pin 9 is connected with an inertial interrupt I, pin 11 is connected with an inertial interrupt II, pin 14 is connected with an external power supply and grounded through a capacitor C3, pin 5, pin 10 and pin 12 are grounded, and pin 3, pin 8, pin 13, pin 15 and pin 16 are vacant.

Further, the main control module comprises a main control chip, and the main control chip is provided with an interface circuit to be connected with the acceleration detection module.

Further, the main control chip is an STM32F103C8T6, and a serial clock interface and a serial data interface of the interface circuit in the STM32F103C8T6 are correspondingly connected with a serial clock interface and a serial data interface of the acceleration detection module.

Further, STM32F103C8T6 is configured with I²C bus, STM32F103C8T6 through I²And the C bus is used for acquiring horizontal acceleration data and vertical acceleration data output by the acceleration detection module.

Further, the STM32F103C8T6 is configured with a clock circuit, a reset circuit, and a power management circuit.

Further, the collision warning system further comprises a communication module, wherein the communication module is used for uploading the collision warning message output by the main control module.

Further, the communication module uploads the collision alarm message to a cloud server, and the cloud server can issue the collision alarm message to a user.

Further, the communication module is a wireless communication module, and the wireless communication module performs data transmission and interaction between the main control module and the cloud server through a wireless communication link.

Compared with the prior art, the utility model discloses a whether the car bumps is discerned to detection car acceleration value, wherein acceleration detection module sensitivity is high, and host system can discern and the filtering interference, can detect the collision of bigger power degree scope fast accurately from this, therefore avoids taking place the erroneous judgement or neglected to judge the collision effectively. For the remote help-seeking device for the automobile collision, only one set of detection device needs to be installed on the whole automobile, so that the structure is simplified, and the cost is reduced.

Drawings

Fig. 1 is a schematic diagram of a remote help-seeking device for vehicle collision according to an embodiment of the present invention;

FIG. 2 is a circuit diagram of an acceleration detection module of FIG. 1;

fig. 3 is a block diagram of a main control module in fig. 1.

Detailed Description

The following detailed description and specific examples are described in connection with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in many different ways than those described herein, and those skilled in the art will be able to do so without departing from the spirit of the invention, and therefore the invention is not limited to the specific embodiments disclosed below.

Referring to fig. 1, a schematic diagram of a device for remotely seeking help in car collision according to an embodiment of the present invention is shown. The automobile collision remote help seeking device is mounted on an automobile and comprises an acceleration detection module, a main control module and a communication module which are sequentially connected. The communication module is also connected to the cloud server to upload collision alarm messages output by the main control module. The collision alarm message can be uploaded to the cloud server through the communication module, and then can be further forwarded to users at all levels (such as car owners, family members, traffic police command centers, insurance companies, medical rescue centers and the like) to be timely disposed, so that the users can conveniently inquire the collision alarm message through websites, APP applets and the like.

It is understood that the collision warning message may further trigger the vehicle-mounted main control system to operate, for example, trigger the video system to start shooting, send vehicle location information, and the like. Therefore, users at all levels can conveniently determine the collision grade and take corresponding measures, and more precious rescue time can be strived for the wounded especially in case of major accidents. The following is described in detail with reference to fig. 1.

The acceleration detection module generally comprises an acceleration sensor, and a data interface of the acceleration sensor is connected with a data interface of the main control module. The acceleration detection module can detect and output acceleration data of three axes of an automobile in real time, wherein the acceleration data comprises horizontal acceleration data Ax, Ay and vertical acceleration data Az, and the acceleration data can accurately judge whether the acceleration data occurs or not. Generally speaking, the braking and acceleration of an automobile will not exceed 3g, that is, the acceleration value of 3 times gravity, and when the acceleration detection module mounted on the automobile detects that the acceleration value is greater than 3g, it is regarded that a collision occurs. Of course, the acceleration threshold may be set smaller, but the relevant disturbance factors need to be excluded from reasonable consideration.

The master control module generally includes a master control chip that configures an interface circuit to connect to the acceleration detection module. The main control module is used for receiving and processing the acceleration horizontal acceleration data and the vertical acceleration data, and when the vertical acceleration data is smaller than a preset vertical acceleration threshold value and the horizontal acceleration data is larger than a preset horizontal acceleration threshold value, the main control module judges that an automobile collision occurs and outputs a collision alarm message. Here, the control policy of the master control module may be: (1) when the acceleration in the vertical direction is more than 1.3g, judging that the vehicle is running on a rough road surface at present, and eliminating interference signals brought by the road surface, otherwise judging that the vehicle is on a flat road surface; (2) under the condition of leveling the road surface, when the acceleration in the horizontal direction is acquired to be greater than 0.8g, the current collision is judged, otherwise, normal conditions such as braking and the like are possible. Of course, the relevant threshold in the control strategy may also be adjusted according to the vehicle and road conditions, and will not be described again.

The communication module is generally a wireless communication module, preferably an efficient 4G module or 5G module, and the like, and performs data transmission and interaction between the main control module and the cloud server through a wireless communication link. When collision happens, the communication module uploads the collision alarm message to the cloud server. Furthermore, the cloud server can issue collision alarm messages to users at all levels according to collision, so that the users such as car owners, family members, traffic police command centers, insurance companies, medical rescue centers and the like can deal with the collision in time.

The embodiment utilizes the acceleration detection module to detect acceleration data in real time, wherein the acceleration detection module has high sensitivity, and the main control module can identify and filter interference, so that the collision within a larger force range can be detected quickly and accurately, and the occurrence of misjudgment or misjudgment collision is effectively avoided. Moreover, the whole automobile only needs to be provided with one set of automobile collision remote help-seeking device, so that the structure is simplified, and the cost is reduced.

The embodiment can specifically adopt the MMA8452 as an acceleration sensor, and use the STM32F103C8T6 as a main control chip, wherein two pins of the STM32F103C8T6 are connected with the MMA8452 chip, so that the STM32F103C8T6 reads the real-time acceleration value of the MMA8452 chip. On this hardware architecture's basis, can write into data acquisition filtering and computer program (can specifically refer to conventional algorithm, this algorithm is not the utility model discloses innovation point is located) in the relevant chip to guarantee control the utility model discloses embodiment control strategy's realization.

Referring to fig. 2, a block circuit diagram of an acceleration detection module of fig. 1 is shown. The acceleration sensor is MMA8452, and the connection mode of a peripheral circuit and pins is as follows: pin 1(VDDIO) is connected with an internal power supply (1.62-3.6V) and is grounded through a capacitor C1(0.1 muF), pin 2(BYP, bypass capacitor) is grounded through a capacitor C2(0.1 muF), pin 3(NC) is suspended to be disconnected, and pin 4(SCL, I) is disconnected²C serial clock) is connected with an internal power supply and connected with the serial clock interface of the main control module through a resistor R1(4.7K omega), a pin 5(GND) is grounded, and a pin 6(SDA, I)²C serial data) is connected with an internal power supply and connected with the serial data interface of the main control module through a resistor R2(4.7K omega), and a pin 7(SA0, I)²C address input least significant bit) is connected to the address input, pin 8(NC) is internally unconnected, pin 9(INT1) is connected to the first inertia interrupt, pin 10(GND) is connected to ground, pin 11(INT2) is connected to the second inertia interrupt, pin 12(GND) is connected to ground, pin 13(NC) is internally unconnected, pin 14(VDD) is connected to an external power supply (1.95-3.6V) and is grounded via a capacitor C3(4.7 μ F), pin 15(NC) is internally unconnected, and pin 16(NC) is internally unconnected. The MMA8452 can effectively and accurately measure the acceleration data of the running of the automobile, so that the subsequent STM32F103C8T6 can be further operated and whether the collision occurs can be judged.

Referring to fig. 3, a block diagram of a master control module of fig. 1 is shown. The STM32F103C8T6 is provided with a plurality of interface circuits, wherein a serial clock interface and a serial data interface are correspondingly connected with a serial clock interface and a serial data interface of the acceleration detection module. The STM32F103C8T6 is configured with I²C bus through which I can pass²The C bus is used for acquiring horizontal acceleration data and vertical acceleration data output by the acceleration detection module, and the data acquisition efficiency is high. In addition, the STM32F103C8T6 is also configured with a clock circuit, a reset circuit, and a power management circuit for convenient use and management.

After the MMA8452 and STM32F103C8T6 are connected, the written or cured program can be used to detect a vehicle collision. When the method works, an MMA8452 chip is initialized; then starting to read the acceleration value of the MMA8452 in real time; after the numerical value is read, whether the system is on a flat road or not is judged through the acceleration value in the vertical direction, and the interference caused by the running of a rough road is eliminated; when the system is in a flat road surface, whether collision happens at present is judged according to the read acceleration value in the horizontal direction. Thus, the device can effectively and reliably prevent the collision accident which may occur in the running process of the automobile.

Incidentally, the relevant modules of the automobile collision remote help-seeking device of the embodiment can be integrated on the main control panel, and can be made into an independent product after being additionally provided with the shell, and can be installed at a proper position (such as the bottom of a front passenger cabin of a copilot and the like) according to the internal structure of the automobile.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims

1. The utility model provides a long-range device of seeking help of car collision which characterized in that, includes acceleration detection module and host system, acceleration detection module and host system connect, acceleration detection module real-time detection and output the horizontal acceleration data and the vertical acceleration data of car, host system receives and handles horizontal acceleration data and vertical acceleration data, when vertical acceleration data is less than the vertical acceleration threshold value of predetermineeing and horizontal acceleration data is greater than the horizontal acceleration threshold value of predetermineeing, host system judges that car collision takes place and output collision warning message.

2. The remote help-seeking device for the collision of the automobile as claimed in claim 1, wherein the acceleration detecting module comprises an acceleration sensor, and a data interface of the acceleration sensor is connected with a data interface of the main control module.

3. The automobile collision remote help apparatus according to claim 1, wherein the acceleration sensor is an MMA8452, and the MMA8452 is provided with the following peripheral circuits: pin 1 is connected with an internal power supply and grounded through a capacitor C1, pin 2 is grounded through a capacitor C2, pin 4 is connected with the internal power supply and connected with a serial clock interface of a master control module through a resistor R1, pin 6 is connected with the internal power supply and connected with a serial data interface of the master control module through a resistor R2, pin 7 is grounded, pin 9 is connected with an inertial interrupt I, pin 11 is connected with an inertial interrupt II, pin 14 is connected with an external power supply and grounded through a capacitor C3, pin 5, pin 10 and pin 12 are grounded, and pin 3, pin 8, pin 13, pin 15 and pin 16 are vacant.

4. The device of claim 1, wherein the main control module comprises a main control chip, and the main control chip is configured with an interface circuit to connect the acceleration detection module.

5. The automobile collision remote help-seeking device as claimed in claim 4, wherein the main control chip is an STM32F103C8T6, and a serial clock interface and a serial data interface of the interface circuit in the STM32F103C8T6 are correspondingly connected with a serial clock interface and a serial data interface of the acceleration detection module.

6. The automobile collision remote help-seeking device according to claim 5, wherein STM32F103C8T6 is configured with I²C bus, STM32F103C8T6 through I²And the C bus is used for acquiring horizontal acceleration data and vertical acceleration data output by the acceleration detection module.

7. The automobile collision remote help seeking device according to claim 5, wherein the STM32F103C8T6 is provided with a clock circuit, a reset circuit and a power management circuit.

8. The automobile collision remote help-seeking device according to any one of claims 1 to 7, further comprising a communication module for uploading a collision warning message output by the main control module.

9. The remote help-seeking device for the collision of the automobile as claimed in claim 8, wherein the communication module uploads the collision warning message to the cloud server, and the cloud server can issue the collision warning message to the user.

10. The device as claimed in claim 9, wherein the communication module is a wireless communication module, and the wireless communication module performs data transmission and interaction between the main control module and the cloud server through a wireless communication link.