TW202006655A - A system and calibration method of setting accelerometer and gyroscope to vehicle - Google Patents

Abstract

The invention discloses a system and a calibration method of setting accelerometer and gyroscope to a vehicle, which is composed of a smart phone, an accelerometer, a gyroscope, and a vehicle-mounted device, wherein the accelerometer and the gyroscope mounted on vehicles are quickly installed and corrected using the smart phones. Under normal circumstances, the installer operates the smart phone to connect to the vehicle-mounted device via a Bluetooth connection to achieve rapid calibration and installation of the accelerometer and the gyroscope. By using the system and the calibration method of setting accelerometer and gyroscope to the vehicle of the present invention, the installer can correctly and appropriately install the accelerometer and the gyroscope on the vehicle at appropriate positions and can carry on the quick equipment correction and the use. The invention provides the efficiency and the convenient installment, achieves the vehicle use status detection and the management safe use.

Description

System and correction method for installing accelerometer and gyroscope on vehicle device

The invention relates to a device installation and calibration of a vehicle device, in particular, to a system and a calibration method for installing an accelerometer and a gyroscope in a vehicle device.

At present, when using tools to install accelerometers and gyroscopes in car devices, it is usually necessary to manually operate the calibration equipment, which has a great impact on the purpose of installing at an accurate angle. Specifically, car devices can be connected through long-distance wireless networks Method (GPRS, 3G/HSDPA, WiMax, 4G/LTE) to connect to the background, detection by the background, then initialization and parameter correction for accelerometer and gyroscope, and manual correction by the installer, but this method is easy because of Network communication conditions affect the calibration time and accuracy.

As mentioned above, the method of installing the accelerometer and gyroscope in the car device still requires user intervention or can only perform the device initialization and parameter correction of the accelerometer and gyroscope through the remote end. This may have a correction time The shortcomings affected by network problems. In addition, the installer must also carry a laptop or tablet with him, which also causes inconvenience to the installer. Considering the current use of smartphones today, through the connection of the background and the installer through It is not a good design to set up a laptop or tablet. How to effectively improve the installation of accelerometers and gyro devices and the convenience of calibration is becoming equally important.

It can be seen from the above that if a method of equipment installation and calibration of a vehicle device can be found, for example, through a portable device, the aforementioned shortcomings of the conventional remote device initialization and parameter correction of accelerometers and gyroscopes can be improved, which will become the current Technical problems that people in the technical field are eager to solve.

The purpose of the present invention is to achieve the purpose of correctly installing the accelerometer and gyroscope on the vehicle-mounted equipment through a simple setting by a smart phone, which makes the vehicle status detection and safety management more convenient, in addition, It is used in the active and safe front-end installation of vehicles in depots, so as to achieve the purpose of simple control and management and save operating manpower.

In order to achieve the above or other objects, the present invention provides a system for installing an accelerometer and a gyroscope in a vehicle device, which includes: a vehicle state detection device, which is provided in the vehicle and used to collect vehicle state information of the vehicle To obtain the vehicle acceleration value and angular velocity value; an on-board device, which is provided in the vehicle, is used to receive the vehicle acceleration value and the angular velocity value from the vehicle state detection device to analyze and calculate the vehicle acceleration value and The angular velocity value is used to obtain the vehicle speed value and the rotation angle value. When the vehicle speed value and the rotation angle value exceed a set value and a preset offset angular velocity value, respectively, a correction message is generated; a handheld communication device that passes the vehicle The device's identity is connected to the in-vehicle device to provide users with control of the in-vehicle device through the handheld communication device for the installation and calibration of the accelerometer and gyroscope. The handheld communication device passes through a long-distance wireless communication network The remote management message is transmitted with the vehicle-mounted device, and the handshaking message and the correction message are transmitted with the vehicle-mounted device through a short-distance wireless communication network.

In one embodiment, the vehicle-mounted device is used to determine whether the vehicle speed value exceeds the set value, so that when the set value is exceeded, the handheld communication device is notified via the short-range wireless communication network to perform the accelerometer parameters and Calibration of hardware equipment and determining whether the gyroscope installed in the vehicle exceeds the preset offset angular velocity value, so that when the offset angular velocity value is exceeded, the handheld communication device is notified via the short-range wireless communication network to perform Calibration of the gyroscope parameters and hardware equipment.

In another embodiment, the vehicle-mounted device includes a long-distance wireless communication module, a short-distance Bluetooth communication interface, and a wired transmission interface. The wired transmission interface is used to connect with the vehicle state detection device.

In yet another embodiment, the vehicle state detection device includes the accelerometer, the gyroscope, and a wired transmission interface, the wired transmission interface is used to connect with the vehicle-mounted device, and the accelerometer and the gyroscope are used to obtain the Vehicle status information.

In still another embodiment, the handheld communication device includes a Bluetooth communication interface, a mobile communication network, and a positioning unit, the Bluetooth communication interface is used for short-distance connection with the vehicle-mounted device, and the mobile communication network is used to communicate with the vehicle-mounted device The long-distance connection, and the mobile communication network and the positioning unit are used for authentication/setting, emergency connection and calibration function activation with the vehicle-mounted device. In addition, the positioning unit uses GPS, AGPS, Wifi, or Cell ID for positioning.

In one embodiment, the vehicle-mounted device is a car computer, an external host, a tablet computer, or a smartphone, the long-distance wireless communication network is GPRS, 3G/HSDPA, WiMax, or 4G/LTE, and the short-distance wireless communication network The road is Bluetooth communication.

In addition, the vehicle state detection device can be integrated into the vehicle-mounted device.

The present invention further proposes a calibration method for installing an accelerometer and a gyroscope in a vehicle device. The calibration method includes: the handheld communication device is connected to the vehicle-mounted device after being identified; and the vehicle state detection device obtains the vehicle state information of the vehicle to Transmitted to the vehicle-mounted device; the vehicle-mounted device analyzes and calculates the vehicle state information to obtain the vehicle speed value and the rotation angle value of the vehicle; and the vehicle-mounted device determines whether the vehicle speed value and the rotation angle value exceed the set value and A preset offset angular velocity value, so that when the rotation angle value exceeds the set value or the rotation angle value exceeds the preset offset angular velocity value, the handheld communication device is notified via a short-range wireless communication network to perform accelerometer parameters and hard Calibration of physical equipment or gyro parameters and calibration of hardware equipment.

In addition, the vehicle state information includes three-axis angular velocity values and three-axis acceleration values. The three-axis angular velocity values and the three-axis acceleration values are transmitted to the central processing unit of the vehicle-mounted device for calculation to obtain the vehicle speed value and the rotation angle value. Stored in the memory of the in-vehicle device to perform the installation calibration of the accelerometer and the gyroscope when the vehicle speed value and the rotation angle value exceed the set value and the preset offset angular speed value.

Compared with the prior art, the object of the present invention is to install an accelerometer and a gyroscope on a car device using a handheld communication device such as a smart phone. The system is composed of a smart phone, an accelerometer, a gyroscope, a car device, etc. The front-end installation business or vehicle management system used in the car factory needs to add a remote servo device. Specifically, a smart phone that allows accelerometer and gyroscope devices to be installed is stored in the vehicle-mounted device, and can be controlled by one of the door number/IMSI code/IMEI code/MAC address of the Bluetooth device to control the vehicle-mounted device For the use object, the vehicle-mounted device can have long-distance wireless (3G/HSDPA, 4G/LTE) communication function to perform the correction data return function. In addition, when installing the accelerometer and gyroscope on the car device, the smart phone will connect and start the installation interface according to the Bluetooth communication interface signal of the user's smart phone. The car device is connected to the smart phone for the first time When the line is online, the device calibration operation interface will be activated immediately, and the Bluetooth signal strength of the connected smartphone will be detected at any time. When the vehicle power door is closed or the battery voltage is too low or the signal of long-distance wireless communication is lost or extremely weak, It can still automatically open the device installation and calibration interface by detecting the Bluetooth signal of the smart phone, correct the accelerometer and gyroscope parameters, and fix the position, thereby helping the user to install the accelerometer and gyroscope correctly and efficiently Applicable to the purpose of the car device.

1‧‧‧Vehicle device

11‧‧‧Long-distance wireless communication module

12‧‧‧ CPU

13‧‧‧Memory

14‧‧‧Bluetooth interface

15‧‧‧Wired transmission interface

2‧‧‧Handheld communication equipment

2’‧‧‧smartphone

21‧‧‧Long-distance wireless communication module

22‧‧‧Bluetooth interface

23‧‧‧Positioning unit

3‧‧‧Vehicle status detection device

31‧‧‧Accelerometer

32‧‧‧Gyroscope

33‧‧‧Wired transmission interface

34‧‧‧Vehicle control interface

4‧‧‧Short-distance wireless communication network

5‧‧‧Long-distance wireless communication network

100~102‧‧‧step

200~207‧‧‧step

300~307‧‧‧Step

S201~S204‧‧‧Step

Figure 1 is a system architecture diagram of a system for installing an accelerometer and a gyroscope in a vehicle device of the present invention; Figure 2 is a step diagram of a calibration method for installing an accelerometer and a gyroscope in a vehicle device of the present invention; FIG. 4 is a flow chart of a specific embodiment of a system for installing an accelerometer and a gyroscope in a vehicle device of the present invention; FIG. 4 is a flowchart of a method for calibrating an accelerometer in a vehicle device of the present invention; and FIG. 5 It is a flow chart of the calibration method of installing a gyroscope to a vehicle device of the present invention.

The technical content of the present invention will be described below with specific specific implementation forms, and those skilled in the art can easily understand the advantages and effects of the present invention from the content disclosed in this specification. However, the present invention can also be implemented or applied by other specific embodiments.

FIG. 1 is a system architecture diagram illustrating a system for installing an accelerometer and a gyroscope to a vehicle device of the present invention. As shown in the figure, the system for installing an accelerometer and a gyroscope in a vehicle device of the present invention includes a vehicle-mounted device 1, a handheld communication device 2, and a vehicle state detection device 3.

The vehicle state detection device 3 is installed in the vehicle, and is used to collect vehicle state information of the vehicle to obtain vehicle acceleration values and angular velocity values.

In an embodiment, the vehicle state detection device 3 includes an accelerometer, a gyroscope, and a wired transmission interface, wherein the wired transmission interface is used to connect with the vehicle-mounted device 1, and the accelerometer and the gyroscope are used as sensors to Obtain the vehicle status information of the vehicle.

The in-vehicle device 1 is also installed in a vehicle. In an embodiment, the in-vehicle device 1 may be a car computer, an external host, a tablet computer, or a smartphone. The vehicle-mounted device 1 is used to receive the vehicle acceleration value and the angular velocity value from the vehicle state detection device 3 to analyze and calculate the vehicle acceleration value and the angular velocity value to obtain the vehicle speed value and the rotation angle value, in spite of the vehicle speed value A correction message is generated when the rotation angle value exceeds a set value and a preset offset angular velocity value, respectively.

In one embodiment, the vehicle-mounted device 1 includes a long-distance wireless communication module, a short-distance Bluetooth communication interface, and a wired transmission interface, wherein the wired transmission interface is used to connect with the vehicle state detection device 3.

The handheld communication device 2 is connected to the vehicle-mounted device 1 through the identity of the vehicle-mounted device 1. The user can control the vehicle-mounted device 1 through the handheld communication device 2 to install and calibrate the accelerometer and the gyroscope. A long-distance wireless communication network 5 communicates with the vehicle-mounted device 1 for remote management information. For example, the long-distance wireless communication network may be a communication network such as GPRS, 3G/HSDPA, WiMax, or 4G/LTE; in addition, handheld communication The device 2 transmits the handshaking message and the correction message with the vehicle-mounted device 1 through a short-distance wireless communication network 4, for example, the short-distance wireless communication network 4 is Bluetooth communication.

In an embodiment, the handheld communication device 2 includes a Bluetooth communication interface, a mobile communication network, and a positioning unit, wherein the Bluetooth communication interface is used for short-distance connection with the vehicle-mounted device 1, and the mobile communication network is used to communicate with the vehicle-mounted device 1. The mobile communication network and the positioning unit can be used for authentication/setting, emergency connection, and activation of the calibration function with the vehicle-mounted device 1. In addition, the aforementioned positioning unit can use GPS, AGPS, Wifi, or Cell ID for positioning

Specifically, the vehicle-mounted device 1 is used to determine whether the vehicle speed value exceeds the set value. When the set value is exceeded, the short-range wireless communication network 4 notifies the handheld communication device 2 to perform the accelerometer parameters and Calibration of hardware equipment; in addition, the vehicle-mounted device 1 is used to determine whether the gyroscope installed in the vehicle exceeds a preset offset angular velocity value, so that when the offset angular velocity value is exceeded, via the short-distance wireless communication network 4 Notify the handheld communication device 2 to perform calibration of the gyroscope parameters and hardware devices.

In order to reduce the space occupied by equipment in the vehicle, in another embodiment, the vehicle state detection device 3 is integrated into the vehicle-mounted device 1. In this case, the vehicle state detection device 3 and the vehicle-mounted device 1 can perform internal data transfer without the need for message transfer through external lines.

Figure 2 illustrates the steps of the calibration method for installing an accelerometer and a gyroscope in a vehicle device according to the present invention, that is, a vehicle-mounted device and a vehicle state detection device mounted on the vehicle. The vehicle state detection device senses the vehicle state and returns To the vehicle-mounted device, the vehicle-mounted device can be connected to the user's handheld communication device for the user to perform the installation and calibration of the accelerometer and gyroscope through the handheld communication device. The steps are as shown in the figure, please refer to the system in Figure 1 Architecture.

In step S201, the handheld communication device is connected to the vehicle-mounted device after being identified. This step explains that the handheld communication device must be identified before it can be connected to the on-board device on the vehicle. The identification method can be through, for example, the smart phone's door number, IMSI code, IMEI code, or the MAC address of the Bluetooth device. One is to do it; after the identity is identified, the handheld communication device is allowed to connect with the vehicle-mounted device and the control right of the correction device is handed over by the user.

In step S202, a vehicle state detection device is caused to obtain vehicle state information of the vehicle to transmit to the vehicle-mounted device. Due to calibration, vehicle state information, such as three-axis acceleration values, three-axis angular velocity values, etc., should be obtained and sent to the on-board device for analysis and judgment. If the obtained vehicle state information is different from the data presented by the accelerometer and gyroscope, This means that the accelerometer and gyroscope need to perform calibration.

In step S203, the vehicle-mounted device is caused to analyze and calculate the vehicle state information to obtain the vehicle speed value and the rotation angle value of the vehicle. This step shows that the vehicle-mounted device will analyze and calculate based on the vehicle state information, such as the three-axis angular velocity value and the three-axis acceleration value, which will be transmitted to the vehicle-mounted device's central processor for calculation, and the vehicle speed value and rotation angle of the vehicle will be obtained The value, vehicle speed value and rotation angle value can be stored in the memory of the vehicle-mounted device, and then compared with the data presented by the accelerometer and gyroscope.

In step S204, the vehicle-mounted device is caused to determine whether the vehicle speed value and the rotation angle value exceed the set value and the preset offset angular speed value, so that the rotation angle value exceeds the set value or the rotation angle value exceeds the preset When the angular velocity value is offset, the handheld communication device is notified through short-range wireless communication to perform the calibration of accelerometer parameters and hardware devices or the calibration of gyroscope parameters and hardware devices. This step explains whether to judge whether the vehicle speed value and the rotation angle value exceed the set value and the preset offset angular velocity value. If it exceeds, it indicates that the accelerometer or gyroscope needs to be corrected, so the handheld communication device can be contacted via a short-range wireless communication network for After the user receives the notification, the handheld communication device operates the vehicle-mounted device to perform the calibration of the accelerometer or gyroscope parameters and the hardware device.

FIG. 3 is a schematic structural diagram of a specific embodiment of a system for installing an accelerometer and a gyroscope in a vehicle device according to the present invention. Under the architecture shown in FIG. 1, the system for installing an accelerometer and a gyroscope in a vehicle device is further described. The overall architecture and specific implementation details of each device such as the on-vehicle device 1, the smartphone 2', and the vehicle status detection device 3.

The vehicle-mounted device 1 includes a long-distance wireless communication module 11, a central processing unit 12, a memory 13, a Bluetooth interface 14 and a wired transmission interface 15. The long-distance wireless communication module 11 can be used to manage settings/monitor or receive smartphone 2'installation of accelerometer and gyroscope, etc. In addition, a short-range Bluetooth communication interface (Bluetooth interface for short) can be used with smartphones The 2'connection is used to judge and execute the automatic prompting for the installation timing of accelerometer and gyroscope.

The onboard device 1 stores a smart phone that allows control of the car door, for example, identification through the door number, IMSI code, IMEI code, or the MAC address of the Bluetooth device, as a basis for allowing correction of the accelerometer and gyroscope functions. Used to manage the use authority of the vehicle. When the vehicle-mounted device 1 completes the connection operation with the smartphone 2'that has been certified, enter the calibration menu, and when only the smartphone 2'is allowed to connect to its vehicle-mounted device 1, the vehicle-mounted device 1 will hand over control of the calibration device Operated by the user.

Specifically, the vehicle-mounted device 1 may be a car computer, an external host, a tablet computer, or a smartphone. The long-distance wireless communication (GPRS, 3G/HSDPA, WiMax, 4G/LTE) module 11 of the vehicle-mounted device 1 and the Bluetooth interface 14 (short-range Bluetooth communication interface) can connect the vehicle-mounted device 1 to the smartphone 2' The wired transmission interface 15 can be connected to the vehicle state detection device 3 for exchanging messages, for example, via USB/UART/RS-232, or the vehicle state detection device 3 can be integrated into the vehicle-mounted device 1 to make the two single equipment.

The vehicle state detection device 3 has sensors such as an accelerometer 31 and a gyroscope 32, a wired transmission interface 33, and a vehicle control interface 34. The vehicle control interface 34 collects the vehicle status, such as the door opening and closing status, accelerometer and gyroscope calibration status, and electric door ON/OFF status, and has a correction data return function. The sensor is used to obtain vehicle status information, and its content can be three-axis angular velocity and three-axis acceleration values and is returned to the vehicle-mounted device 1 via a wired transmission interface 33 (such as USB/UART/RS-232, etc.), a vehicle state detection device 3 The acceleration value obtained by detecting the vehicle will be sent to the central processor 12 of the vehicle-mounted device 1 to calculate the vehicle speed value to determine whether the driving speed exceeds the set value and stored in the memory 13 of the vehicle-mounted device 1. In addition, the angular velocity value obtained by the vehicle state detection device 3 for detecting the vehicle is transmitted to the central processor 12 for calculation by the central processor 12 to obtain the rotation angle value, by determining whether the rotation angle exceeds the preset offset angular velocity value And stored in the memory 13, and then notify the smart phone 2'for the user to perform accelerometer and gyroscope installation calibration.

In the foregoing, the vehicle state detection device 3 can be integrated into the vehicle-mounted device 1. In this case, the wired transmission interface (USB/RS-232) between the vehicle control interface 34 of the vehicle-mounted device 1 and the vehicle state detection device 3 can be reduced )setting.

The smartphone 2'has a long-distance wireless communication module 21, a Bluetooth interface 22 (Bluetooth communication interface), and a positioning unit 23. The Bluetooth interface 22 provides the user to connect with the vehicle-mounted device 1 through the smartphone 2'. At this time, the sensor data obtained by the vehicle-mounted device is received through the short-distance wireless communication network 4. Long-distance wireless communication module 21, such as GPRS, 3G/HSDPA, WiMax, 4G/LTE and other mobile communication systems, is used to provide the connection of the smart phone 2'with the vehicle-mounted device 1 through the long-distance wireless communication network 5, this state It means that when the smartphone 2'is far away from the vehicle-mounted device 1, the message can only be transmitted through the long-distance wireless communication network 5, so it can usually provide authentication/setting, emergency connection and calibration function activation with the vehicle-mounted device 1. Purpose. In addition, the positioning unit 23 can perform positioning using GPS, AGPS, Wifi, and Cell ID.

Under the above framework, further description will be given to automatically prompt the installation of accelerometer and gyroscope calibration scenarios. The in-vehicle device 1 is installed in the vehicle, and can communicate with the user's smartphone 2'by wireless transmission. The vehicle state detection device 3 is also installed in the vehicle to collect the vehicle state and transmit the vehicle acceleration and angular velocity to The vehicle-mounted device 1 performs numerical calculations; the handheld communication device particularly refers to a smartphone 2'with a Bluetooth communication interface for users to connect to the vehicle-mounted device 1 through this device, for the vehicle-based device 1 to install accelerometers and gyroscopes . The long-distance wireless communication network 5 is used as a medium for remote management of message transmission between the vehicle-mounted device 1 and the smartphone 2', and the short-distance wireless communication network 4 is used as a medium for transmission of information between the vehicle-mounted device 1 and the hand-held smartphone 2', and as a correction medium The basis for connecting device parameters. The vehicle-mounted device 1 is used to determine whether the driving speed exceeds the set value. When the vehicle speed exceeds the set value, the hand-smart phone 2'is notified through the short-range wireless communication network 4 to perform accelerometer parameter and hardware device calibration, and the vehicle-mounted device 1 It is used to determine whether the gyro installed in the vehicle exceeds the preset offset angular velocity value. When the offset angular velocity value is exceeded, the smartphone 2'is notified through the short-distance wireless communication network 4 to perform the gyroscope parameters and hardware Equipment calibration.

In other cases, for example, when the vehicle's electric door is closed and the long-distance wireless (3G/HSDPA, 4G/LTE) signal is almost lost or lost (Link-loss), the vehicle-mounted device 1 can automatically store and record the current speed/ Speed/positioning (GPS/AGPS/Wifi/Cell ID positioning) information.

After the in-vehicle device 1 detects the Bluetooth signal of the smartphone 2'and the signal gradually increases for a few seconds, the in-vehicle device 1 automatically prompts to install the accelerometer and gyroscope calibration procedures to achieve a convenient installation for the user (driving) purpose.

In order to put the in-vehicle device 1 into the power-saving mode, when the latest position of the smartphone 2'is as far away from an unreachable distance as described above, the smartphone 2'can automatically issue the instruction of the in-vehicle device 1 to sleep through the long-distance wireless communication network 5 And close the Bluetooth communication interface, this power saving function can also be operated by the user to manually run the smart phone 2'to execute the command sleep. In addition, when the user's smartphone 2'enters the location within a few minutes, the smartphone 2'can issue the wake-up command of the in-vehicle device 1 through the long-distance wireless communication network 5 and activate the Bluetooth communication interface. This wake-up mechanism also The smart phone 2'can be operated by the user.

FIG. 4 is a flowchart illustrating a method for calibrating an accelerometer to a vehicle device according to the present invention. As shown in the figure, steps 100 to 102 are to determine whether the power door is turned on, whether it is in sleep mode or need to enter the sleep mode. When the power door is turned on and does not need to be in the sleep state, the standby mode of step 200 is entered. In the standby mode, Steps 201-202 will determine whether there is a connection between the vehicle-mounted device and the smartphone. If there is a connection, proceed to steps 203-207, that is, the vehicle-mounted device enters the stage of determining whether calibration is required. At this time, step 203 reads the driving acceleration through the accelerometer Then, in step 204, the driving acceleration is sent to the central processor to calculate the driving speed, so that in step 205, it is determined whether the calculated driving speed is equal to the actual driving speed. If it goes to step 206, it means that the calibration is completed, otherwise it goes to step 207, changes the accelerometer parameters and the installation angle and orientation, and then returns to steps 203~205 to judge whether the calibration is completed or needs to be recalibrated.

FIG. 5 is a flowchart illustrating a calibration method of installing a gyroscope to a vehicle device of the present invention. As shown in the figure, the steps 100~102 are to determine whether the power door is open, whether to enter the sleep mode or need to enter the sleep mode, when the power door is open and does not need to be in the sleep state, then enter the standby mode of step 300, in the standby mode , Steps 301~302 will determine whether there is a connection between the vehicle-mounted device and the smartphone. If there is a connection, proceed to steps 303-307, that is, the vehicle-mounted device determines whether the calibration stage is required. At this time, in step 303, the gyroscope reads After the rotation angular velocity, in step 304, the read rotation angular velocity is sent to the central processor to calculate the rotation angle. In step 305, it is determined whether the calculated rotation angle is equal to the actual angle. If it goes to step 306, it means that the calibration is completed, otherwise, it goes to step 307 to change the gyro parameters and installation angle and orientation, and then returns to steps 303~305 to judge whether the calibration is completed or needs to be re-calibrated.

In summary, the present invention provides a system and a calibration method for installing an accelerometer and a gyroscope in a vehicle device, which has the following advantages over conventional technologies: (1) The vehicle-mounted device can automatically determine the installation equipment Timing, when the user approaches the vehicle-mounted device and detects the Bluetooth signal of the smartphone, it automatically prompts the installation of the accelerometer and gyro calibration procedures, without having to drive and manually open the calibration menu; (2) The vehicle-mounted device is turned off and long Under the condition that the wireless (3G/HSDPA, 4G/LTE) signal is almost lost or lost (Link-loss), the accelerometer and gyroscope installation procedures can be executed, which has the advantages of convenience and safety; (3) The invention combines the fleet Manage business, perform vehicle status detection and safety management. Therefore, the present invention can be combined with the active and safe front-end installation business of the vehicle in the depot to achieve the purposes of simple control and management manpower saving.

The above detailed description is a specific description of a feasible embodiment of the present invention, but this embodiment is not intended to limit the patent scope of the present invention, and any equivalent implementation or change without departing from the technical spirit of the present invention should be included in The patent scope of this case.

1‧‧‧Vehicle device

2‧‧‧Handheld communication equipment

3‧‧‧Vehicle status detection device

4‧‧‧Short-distance wireless communication network

5‧‧‧‧‧‧ Long-distance wireless communication network

Claims (12)

A system for installing an accelerometer and a gyroscope in a vehicle device includes: a vehicle state detection device, which is provided in a vehicle and used to collect vehicle state information of the vehicle to obtain vehicle acceleration values and angular velocity values; An on-vehicle device, which is provided in the vehicle and used to receive the vehicle acceleration value and the angular velocity value from the vehicle state detection device, to analyze and calculate the vehicle acceleration value and the angular velocity value to obtain the vehicle speed value and rotation Angle value, when the vehicle speed value and the rotation angle value exceed a set value and a preset offset angular speed value, respectively, to generate a correction message; a handheld communication device, which is connected to the vehicle under the identity of the vehicle-mounted device Device to provide the user to control the vehicle-mounted device through the handheld communication device for the installation and calibration of the accelerometer and gyroscope, wherein the handheld communication device performs remote management of messages with the vehicle-mounted device through a long-distance wireless communication network Transmission and transmission of handshake messages and calibration messages with the vehicle-mounted device via a short-distance wireless communication network. The system for installing an accelerometer and a gyroscope in a vehicle device as described in item 1 of the patent scope, wherein the vehicle-mounted device is used to determine whether the vehicle speed value exceeds the set value, and when the set value is exceeded, Notify the handheld communication device via the short-range wireless communication network to perform calibration of the accelerometer parameters and hardware devices, and determine whether the gyroscope installed in the vehicle exceeds the preset offset angular velocity value to exceed the offset When the angular velocity value is passed, the handheld communication device is notified via the short-range wireless communication network to perform calibration of the gyroscope parameters and hardware devices. The system for installing an accelerometer and a gyroscope in a vehicle device as described in item 1 of the patent scope, wherein the vehicle device is a vehicle computer, an external host, a tablet computer, or a smartphone. The system for installing an accelerometer and a gyroscope in a vehicle device as described in item 1 of the patent application scope, wherein the vehicle-mounted device includes a long-distance wireless communication module, a short-distance Bluetooth communication interface, and a wired transmission interface, the wired transmission The interface is used to connect with the vehicle state detection device. The system for installing an accelerometer and a gyroscope in a vehicle device as described in item 1 of the patent scope, wherein the vehicle state detection device includes the accelerometer, the gyroscope and a wired transmission interface, the wired transmission interface is used for It is connected to the vehicle-mounted device, and the accelerometer and the gyroscope are used to obtain the vehicle state information. The system for installing an accelerometer and a gyroscope in a vehicle device as described in item 1 of the patent application scope, wherein the vehicle state detection device is integrated into the vehicle-mounted device. The system for installing an accelerometer and a gyroscope in a vehicle device as described in item 1 of the patent application scope, wherein the handheld communication device includes a Bluetooth communication interface, a mobile communication network and a positioning unit, and the Bluetooth communication interface is used for The vehicle-mounted device is connected for a short distance, the mobile communication network is used for long-distance connection with the vehicle-mounted device, and the mobile communication network and the positioning unit are used for authentication/setting, emergency connection and correction function activation with the vehicle-mounted device Purpose. The system for installing an accelerometer and a gyroscope in a vehicle device as described in item 7 of the patent application scope, wherein the positioning unit uses GPS, AGPS, Wifi, or Cell ID for positioning. The system for installing an accelerometer and a gyroscope in a vehicle device as described in item 1 of the patent scope, wherein the long-distance wireless communication network is GPRS, 3G/HSDPA, WiMax, or 4G/LTE. The system for installing an accelerometer and a gyroscope in a vehicle device as described in item 1 of the patent scope, wherein the short-range wireless communication network is Bluetooth communication. A calibration method for installing an accelerometer and a gyroscope in a vehicle device. The calibration method includes: connecting the handheld communication device to the vehicle-mounted device after being identified; and enabling the vehicle state detection device to obtain vehicle state information of the vehicle for transmission to the vehicle-mounted device Device; causing the vehicle-mounted device to analyze and calculate the vehicle state information to obtain the vehicle speed value and rotation angle value of the vehicle; and the vehicle-mounted device to determine whether the vehicle speed value and the rotation angle value exceed the set value and the preset offset Angular velocity value, when the rotation angle value exceeds the set value or the rotation angle value exceeds the preset offset angular velocity value, the handheld communication device is notified via a short-distance wireless communication network to perform accelerometer parameters and hardware device Calibration or calibration of gyroscope parameters and hardware equipment. The calibration method of installing an accelerometer and a gyroscope in a vehicle device as described in item 11 of the patent application scope, wherein the vehicle state information includes a three-axis angular velocity value and a three-axis acceleration value, the three-axis angular velocity value and the three-axis The acceleration value is transmitted to the central processing unit of the vehicle-mounted device for calculation to obtain the vehicle speed value and the rotation angle value and stored in the memory of the vehicle-mounted device, so that the vehicle speed value and the rotation angle value exceed the set value and the When the offset angular velocity value is preset, the installation and calibration of the accelerometer and the gyroscope are performed.

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