Vehicle-mounted wireless multi-source signal transmitter

Abstract

The invention provides a vehicle-mounted wireless multi-source signal transmitter which comprises a sensor, a signal processing circuit, a communication interface and a power management module. The working process of the vehicle-mounted wireless multi-source signal transmitter comprises the following steps that S1, the vehicle-mounted wireless multi-source signal transmitter is started and initialized; s2, real-time data acquisition by a multi-source signal acquisition module; s3, carrying out real-time data preprocessing and analysis; s4, packaging the analyzed data into a data packet, and sending the data packet to a receiving end of the vehicle-mounted equipment through a wireless communication module; s5, after the wireless unit receiving end receives the data, the data are analyzed, and corresponding feedback instructions or alarm information is generated according to needs; the vehicle-mounted wireless multi-source signal transmitter provided by the invention solves the key technical problems of weak anti-interference capability, high-efficiency synchronization among multiple devices, complex wiring, unstable transmission and the like.

Description

Technical Field

[0001] The present invention relates to the field of autonomous driving, and in particular to a vehicle-mounted wireless multi-source signal transmitter. Background Art

[0002] On-board signal transmitters play a vital role in the automotive industry. They are mainly used to process and convert various signals on the vehicle, such as temperature, pressure, speed, fuel level, etc., to ensure that this information can be accurately and stably transmitted to the vehicle's control system, such as the engine management system (EMS), anti-lock braking system (ABS) and traction control system (TCS). With the development of autonomous driving technology, on-board signal transmitters are also playing an increasingly important role in sensor fusion, environmental perception, vehicle status monitoring, etc. However, the on-board signal transmitters currently on the market have the following defects: 1. The vehicle-mounted signal transmitters currently on the market have poor anti-interference capabilities, which can lead to deviations and interruptions in transmitted data, difficulty in synchronizing multiple devices, and easily lead to data loss or delay.

[0003] 2. The traditional vehicle-mounted signal transmitters on the market currently use wired connections, which are relatively expensive. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a vehicle-mounted wireless multi-source signal transmitter.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A vehicle-mounted wireless multi-source signal transmitter, including a sensor, a signal processing unit, a communication interface and a power management module; The sensors include temperature sensors, pressure sensors, and speed sensors; The temperature sensor is used to collect temperature data of the vehicle; the pressure sensor is used to collect pressure data of the vehicle; and the speed sensor is used to collect acceleration data of the vehicle.

[0006] The signal processing unit includes a signal preprocessing unit, an analog-to-digital converter (A / D converter), and a data processing unit.

[0007] The signal preprocessing unit is used to amplify and filter the temperature data, pressure data, and acceleration data collected by the sensor; The analog-to-digital converter (A / D conversion) converts the processed temperature data, pressure data, and acceleration data into digital signals; The data processing unit is a microprocessor MCU, which processes and analyzes digital signals.

[0008] The communication interface is a wireless communication unit for transmitting the processed signal to a wireless unit receiving end of the vehicle; The power management module is used to provide power.

[0009] The vehicle-mounted wireless multi-source signal transmission working method comprises the following steps: S1: Start and perform initialization settings; S11: The vehicle-mounted wireless multi-source transmitter is connected to a power source, and then the vehicle-mounted wireless multi-source signal transmitter circuit is checked; S12: The system of the vehicle-mounted wireless multi-source transmitter performs self-test, and the wireless communication unit performs wireless connection; The wireless communication unit is connected to the wireless unit receiving end via WIFI wireless technology; S13: Initialize the vehicle-mounted wireless multi-source transmitter, reconfigure sensor parameters, and perform safety settings and protection; The sensor parameters are restored to the initialization state, and the system's safety settings and protection functions are reactivated to ensure that sensor data is not lost during transmission.

[0010] S2: multi-source signal acquisition module for real-time signal acquisition; The multi-source signal acquisition module includes a temperature sensor, a pressure sensor, and an acceleration sensor; The collected data include temperature data K1, pressure data P1, and acceleration data V1; The temperature sensor collects temperature data k1 of the vehicle; the pressure sensor collects pressure data P1 of the vehicle; the speed sensor collects acceleration data V1 of the vehicle; S3: real-time data preprocessing and analysis; The steps include: S31: The sensor sends the collected data to the preprocessing unit; The temperature sensor sends the collected vehicle temperature data k1 to the preprocessing unit; the pressure sensor sends the collected vehicle pressure data P1 to the preprocessing unit; the speed sensor sends the collected vehicle acceleration data V1 to the preprocessing unit; S32: The pre-processing unit cleans the received data; The preprocessing unit cleans the received temperature data K1, pressure data P1, and acceleration V1, and compresses the cleaned temperature data K1, pressure data P1, and acceleration physical quantity data V1 to obtain preprocessed vehicle operation status data.

[0011] The data cleaning includes processing noise, outliers or redundant information.

[0012] The pre-processed vehicle running state data includes temperature data K2, pressure data P2, and acceleration physical quantity data V2.

[0013] S33: The vehicle operation status data is processed and analyzed by the microprocessor (MCU).

[0014] The microprocessor MCU performs in-depth analysis on the pre-processed vehicle operating status data temperature data K2, pressure data P2, and acceleration physical quantity data V2 according to preset algorithms and logics, extracts key information, and determines the vehicle's operating status to obtain vehicle status operating data.

[0015] S4: The converted data is encapsulated into a data packet and sent to the receiving end of the vehicle-mounted device through the wireless communication unit; The following sub-steps are included: S41: Define ASN.1 file; First, according to the vehicle operation status data, the corresponding ASN.1 file is defined, and the data structure and type are described in the ASN.1 file; S42: compile ASN.1 file; Use ASN.1 compilation tools (such as asn1c) to compile ASN.1 files into source code in programming languages ​​such as C / C++ to generate data structures and encoding and decoding functions; S43: Data filling and encoding; The vehicle operation status data is filled into the generated data structure, and the data is encoded using the encoding and decoding function to generate byte stream data that can be used for wireless transmission.

[0016] The byte stream data transmitted wirelessly includes device ID1, vehicle status operation data, and device operation status; The device ID1 is the ID code of the vehicle-mounted wireless multi-source signal transmitter. The device ID1 is stored in the EEPROM of the MCU. The device ID1 is a unique string manually burned into the EEPROM. The vehicle status operation data is obtained by MCU performing in-depth analysis on temperature data K2, pressure data P2, and acceleration data V2, extracting key information, and judging the vehicle's operating status; The device operation status is the operation status data of the vehicle-mounted wireless multi-source signal transmitter; The wireless unit receiving end is arranged on the vehicle and is used for receiving the byte stream data transmitted wirelessly.

[0017] The wireless unit receiving end receives the byte stream data transmitted wirelessly. Furthermore, the received wirelessly transmitted byte stream data is parsed and matched with the device ID2. If ID1 and ID2 match successfully, the wireless unit receiving end passes the wirelessly transmitted byte stream data to the subsequent device for processing; if ID1 and ID2 do not match successfully, the wireless unit receiving end does not pass the wirelessly transmitted byte stream data to the subsequent device.

[0018] The matching of ID1 and ID2 is preset manually, and an ID1 and ID2 matching table is generated and burned into the wireless unit receiving end.

[0019] S5: After receiving the data, the wireless unit receiving end analyzes it and generates corresponding feedback instructions or alarm information as needed; The following sub-steps are included: S51: The wireless unit receiving end receives byte stream data; S52: The wireless unit receiving end analyzes the byte stream data; The wireless unit receiving end performs data analysis and status judgment on the byte stream data; S53: The wireless unit receiving end generates a corresponding feedback instruction or alarm information; The feedback instructions include normal driving feedback and remote control instructions; Alarm information usually includes key information such as vehicle location, abnormality type, and timestamp; The wireless unit receiving end generates corresponding feedback instructions and alarm information based on the analysis results.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: compared with the traditional split transmitter, the multi-source signal processing capability of the present invention significantly improves the efficiency and accuracy of data acquisition, reduces data loss or delay caused by synchronization problems between multiple devices, and thus improves the operating efficiency and reliability of the overall system. High-precision sensors and algorithms ensure the accuracy of the data, and wireless transmission technology further reduces interference and errors in the data transmission process, improving the measurement accuracy and data quality of the entire system. By adopting the vehicle-mounted wireless multi-source signal transmitter technology, the length requirement of the traditional wired connection can be effectively shortened or even eliminated, thereby significantly saving raw material consumption and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the connection of various parts of a vehicle-mounted wireless multi-source signal transmitter according to Embodiment 1 of the present invention; Figure 2 A flowchart of specific working steps of a vehicle-mounted wireless multi-source signal transmitter according to Embodiment 1 of the present invention; DETAILED DESCRIPTION

[0022] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed description is given in conjunction with the embodiments. Specific embodiments

[0023] A vehicle-mounted wireless multi-source signal transmitter comprises a multi-source signal acquisition module, a signal processing module, a communication interface module and a power management module; The multi-source signal acquisition module is connected to the signal processing module by electrical signals; the signal processing circuit module is connected to the communication interface module by electrical signals; the power management module is connected to the multi-source signal acquisition module and the communication interface module by electrical signals respectively.

[0024] The multi-source signal acquisition module includes a temperature sensor, a pressure sensor, and a speed sensor, which are used to collect temperature data K1, pressure data P1, and acceleration data V1 of the vehicle respectively; The signal processing module includes a signal preprocessing unit, an analog-to-digital converter (A / D converter), and a data processing unit; The data processing unit is a microprocessor (MCU); The signal preprocessing unit is used to amplify and filter the collected signals; the analog-to-digital converter (A / D conversion) converts the processed analog signals into digital signals; the data processing unit is a microprocessor (MCU) that efficiently processes and analyzes digital signals.

[0025] The communication interface is a wireless communication unit for transmitting the processed signal to the control system of the vehicle; The power management module is used to provide power.

[0026] like Figure 2 As shown, a vehicle-mounted wireless multi-source signal transmission working method includes the following steps: S1: The vehicle-mounted wireless multi-source signal transmitter is started and initialized; Start the vehicle-mounted wireless multi-source transmitter and perform initialization settings, including power connection, circuit inspection, system self-test, establishing wireless communication connection, configuring sensor parameters, safety settings and protection; S11: The vehicle-mounted wireless multi-source transmitter is connected to a power supply, and then the circuit of the vehicle-mounted wireless multi-source transmitter is checked; S12: The system of the vehicle-mounted wireless multi-source transmitter performs self-test, and the wireless communication unit performs wireless connection; The wireless communication unit is connected to the receiving end of the device via WIFI wireless technology; S13: Initialize the vehicle-mounted wireless multi-source transmitter, reconfigure sensor parameters, and perform safety settings and protection; The sensor parameters are restored to the initialization state, and the system's safety settings and protection functions are reactivated to ensure that sensor data is not lost during transmission.

[0027] S2: multi-source signal acquisition module for real-time signal acquisition; The multi-source signal acquisition module includes a temperature sensor, a pressure sensor, and an acceleration sensor; The collected data include temperature data K1, pressure data P1, and acceleration data V1; The temperature sensor collects temperature data k1 of the vehicle; the pressure sensor collects pressure data P1 of the vehicle; the speed sensor collects acceleration data V1 of the vehicle; S3: real-time data preprocessing and analysis; The steps include: S31: The sensor sends the collected data to the preprocessing unit; The temperature sensor sends the collected vehicle temperature data k1 to the preprocessing unit; the pressure sensor sends the collected vehicle pressure data P1 to the preprocessing unit; the speed sensor sends the collected vehicle acceleration data V1 to the preprocessing unit; S32: The pre-processing unit cleans the received data; The preprocessing unit cleans the received temperature data K1, pressure data P1, and acceleration V1, and compresses the cleaned temperature data K1, pressure data P1, and acceleration physical quantity data V1 to obtain preprocessed vehicle operation status data.

[0028] The data cleaning includes processing noise, outliers or redundant information.

[0029] The pre-processed vehicle running state data includes temperature data K2, pressure data P2, and acceleration physical quantity data V2.

[0030] S33: The vehicle operation status data is processed and analyzed by the microprocessor (MCU).

[0031] The microprocessor MCU performs in-depth analysis on the pre-processed vehicle operating status data temperature data K2, pressure data P2, and acceleration physical quantity data V2 according to preset algorithms and logics, extracts key information, and determines the vehicle's operating status to obtain vehicle status operating data.

[0032] S4: The converted data is encapsulated into a data packet and sent to the receiving end of the vehicle-mounted device through the wireless communication unit; The wireless communication unit is the WIFI wireless communication unit of the Bairui I1880-SW WIFI module solution; S41: Define ASN.1 file; First, according to the vehicle operation status data, the corresponding ASN.1 file is defined, and the data structure and type are described in the ASN.1 file; S42: compile ASN.1 file; Use ASN.1 compilation tools (such as asn1c) to compile ASN.1 files into source code in programming languages ​​such as C / C++ to generate data structures and encoding and decoding functions; S43: Data filling and encoding; The vehicle operation status data is filled into the generated data structure, and the data is encoded using the encoding and decoding function to generate byte stream data that can be used for wireless transmission.

[0033] The byte stream data transmitted wirelessly includes device ID1, vehicle status operation data, and device operation status; The device ID1 is the ID code of the vehicle-mounted wireless multi-source signal transmitter. The device ID1 is stored in the EEPROM of the MCU. The device ID1 is a unique string manually burned into the EEPROM. The vehicle status operation data is obtained by MCU performing in-depth analysis on temperature data K2, pressure data P2, and acceleration data V2, extracting key information, and judging the vehicle's operating status; The device operation status is the operation status data of the vehicle-mounted wireless multi-source signal transmitter; The wireless unit receiving end is arranged on the vehicle and is used for receiving the byte stream data transmitted wirelessly.

[0034] The wireless unit receiving end receives the byte stream data transmitted wirelessly. Furthermore, the received wirelessly transmitted byte stream data is parsed and matched with the device ID2. If ID1 and ID2 match successfully, the wireless unit receiving end passes the wirelessly transmitted byte stream data to the subsequent device for processing; if ID1 and ID2 do not match successfully, the wireless unit receiving end does not pass the wirelessly transmitted byte stream data to the subsequent device.

[0035] The matching of ID1 and ID2 is preset manually, and an ID1 and ID2 matching table is generated and burned into the wireless unit receiving end.

[0036] Because the present invention uses byte stream data transmitted wirelessly, it solves the problems of using a wire harness for data transmission, crosstalk between wire harnesses, and conduction and interference of wire harnesses, solves the signal attenuation problem caused by the excessive length of the wire harness, reduces the use of the wire harness, and reduces costs. The byte stream data transmitted wirelessly by the present invention includes a device ID, and the device ID1 code is unique. The wireless unit receiving end matches through the ID1 and ID2 matching tables. Only when the match is successful will the wirelessly transmitted byte stream data be passed to the subsequent device, thereby solving the accuracy and correctness of the wirelessly transmitted data, and also solving the problem of data transmission interference.

[0037] S5: After receiving the data, the wireless unit receiving end monitors and analyzes it, and generates corresponding feedback instructions or alarm information as needed; S51: The wireless unit receiving end receives various vehicle operation data in real time through the vehicle-mounted wireless multi-source signal transmitter, including but not limited to vehicle speed, location (latitude and longitude), engine status, fuel consumption, safety system status, etc.; S52: The wireless unit receiving end analyzes various operating data of the vehicle and determines the vehicle status; Analysis includes data analysis and status assessment. Data analysis uses the algorithms and logic preset by the MCU to deeply analyze the received data and extract key information, such as vehicle speed changes, abnormal engine parameters, safety system activation, etc. Status assessment: Based on the analysis results, determine whether the vehicle's operating status is normal and whether there are potential safety hazards or faults.

[0038] S53: Generate corresponding feedback instructions or alarm information according to the analysis results; Feedback instructions include normal driving feedback and remote control instructions; Normal driving feedback: When the vehicle is operating normally, the wireless unit receiver may not generate specific feedback instructions, but will record and store relevant data for subsequent analysis.

[0039] Remote control instructions: In certain circumstances, such as when the vehicle is stolen or an emergency occurs, the remote monitoring center can send control instructions, such as remotely locking the vehicle, activating the vehicle safety system, etc.

[0040] Furthermore, the alarm information usually includes key information such as vehicle location, anomaly type, and timestamp; When the device receives the information, it will analyze and store it to achieve real-time monitoring of the vehicle status. At the same time, according to the monitoring results, real-time analysis can be performed to generate corresponding feedback instructions or alarm information.

[0041] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.

Claims

1. A vehicle-mounted wireless multi-source signal transmitter, characterized in that: It includes a multi-source signal acquisition module, a signal processing module, a communication interface module and a power management module; The multi-source signal acquisition module includes a temperature sensor, a pressure sensor, and a speed sensor, which are used to collect temperature, pressure, and acceleration physical quantity signals of the vehicle; The signal processing circuit includes a signal preprocessing unit, an analog-to-digital converter (A / D converter), and a data processing unit. The signal preprocessing unit is used to amplify and filter the collected signal; The analog-to-digital converter (A / D conversion) converts the processed analog signal into a digital signal; the data processing unit is a microprocessor (MCU), which processes and analyzes the digital signal efficiently; The communication interface is a wireless communication unit and a wireless unit receiving end, which are used to transmit the processed signal to the control system of the vehicle; The power management module is used to ensure that the transmitter can work stably under different working conditions and provide necessary power protection and power supply management.

2. A vehicle-mounted wireless multi-source signal transmission working method, characterized in that: The following steps are involved: S1: The vehicle-mounted wireless multi-source signal transmitter is started and initialized; The following sub-steps are included: S11: The vehicle-mounted wireless multi-source transmitter is connected to a power source, and then the vehicle-mounted wireless multi-source signal transmitter circuit is checked; S12: The system of the vehicle-mounted wireless multi-source transmitter performs self-test, and the wireless communication unit performs wireless connection; S13: Initialize the vehicle-mounted wireless multi-source transmitter, reconfigure sensor parameters, and perform safety settings and protection; S2: Real-time data acquisition by multi-source signal acquisition module; The multi-source signal acquisition module includes a temperature sensor, a pressure sensor, and an acceleration sensor; The collected data include temperature data K1, pressure data P1, and acceleration data V1; The temperature sensor collects temperature data k1 of the vehicle; the pressure sensor collects pressure data P1 of the vehicle; the speed sensor collects acceleration data V1 of the vehicle; S3: real-time data preprocessing and analysis; The following sub-steps are included: S31: The sensor sends the collected data to the preprocessing unit; The temperature sensor collects the temperature data k1 of the vehicle and sends it to the preprocessing unit; the pressure sensor collects the pressure data P1 of the vehicle and sends it to the preprocessing unit; The speed sensor transmits the collected vehicle acceleration data V1 to the pre-processing unit; S32: The pre-processing unit cleans the received data; The preprocessing unit cleans the received temperature data K1, pressure data P1, and acceleration V1, and compresses the cleaned temperature data K1, pressure data P1, and acceleration physical quantity data V1 to obtain preprocessed vehicle operation status data; The data cleaning includes processing noise, outliers or redundant information; The pre-processed vehicle running state data includes temperature data K2, pressure data P2, and acceleration physical quantity data V2; S33: The vehicle operation status data is processed and analyzed by the microprocessor (MCU); The microprocessor MCU performs in-depth analysis on the pre-processed vehicle operation status data temperature data K2, pressure data P2, and acceleration physical quantity data V2 according to the preset algorithm and logic, extracts key information, and determines the vehicle's operation status to obtain the vehicle status operation data; S4: The converted data is encapsulated into a data packet and sent to the receiving end of the vehicle-mounted device through the wireless communication unit; The following sub-steps are included: S41: Define ASN.1 file; First, according to the vehicle operation status data, the corresponding ASN.1 file is defined, and the data structure and type are described in the ASN.1 file; S42: compile ASN.1 file; Use ASN.1 compilation tools (such as asn1c) to compile ASN.1 files into source code in programming languages ​​such as C / C++ to generate data structures and encoding and decoding functions; S43: Data filling and encoding; Fill the vehicle running status data into the generated data structure, and use the encoding and decoding function to encode the data to generate byte stream data that can be used for wireless transmission; S5: After receiving the data, the wireless unit receiving end analyzes it and generates corresponding feedback instructions or alarm information as needed; The following sub-steps are included: S51: The wireless unit receiving end receives byte stream data; S52: The wireless unit receiving end analyzes the byte stream data; The wireless unit receiving end performs data analysis and status judgment on the byte stream data; S53: The wireless unit receiving end generates a corresponding feedback instruction or alarm information; The feedback instructions include normal driving feedback and remote control instructions; Alarm information usually includes key information such as vehicle location, abnormality type, and timestamp; The wireless unit receiving end generates corresponding feedback instructions and alarm information based on the analysis results.

3. The vehicle-mounted wireless multi-source signal transmitter according to claim 2, characterized in that: In step S43, the specific contents are as follows: Fill the vehicle running status data into the generated data structure, and use the encoding and decoding function to encode the data to generate byte stream data that can be used for wireless transmission; The byte stream data transmitted wirelessly includes device ID1, vehicle status operation data, and device operation status; The device ID1 is the ID code of the vehicle-mounted wireless multi-source signal transmitter. The device ID1 is stored in the EEPROM of the MCU. The device ID1 is a unique string manually burned into the EEPROM. The vehicle status operation data is obtained by MCU performing in-depth analysis on temperature data K2, pressure data P2, and acceleration data V2, extracting key information, and judging the vehicle's operating status; The device operation status is the operation status data of the vehicle-mounted wireless multi-source signal transmitter; The wireless unit receiving end is arranged on the vehicle and is used for receiving the byte stream data transmitted wirelessly.

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