阅读说明：本技术 基于无线数据通讯的机动车现场测速仪校准系统 (Motor vehicle field velocimeter calibration system based on wireless data communication ) 是由 程序 顾娜 陈力 张建 于 2021-09-23 设计创作，主要内容包括：本发明涉及仪器仪表技术领域,且公开了基于无线数据通讯的机动车现场测速仪校准系统,包括主控设备、LED显示模块、位移传感器以及操作模块,所述主控设备的数据输出端与LED显示模块的数据输入端数据连接,主控设备与操作设备双向数据连接,位移传感器的数据输出端与主控设备的数据接收端数据连接。该基于无线数据通讯的机动车现场测速仪校准系统,状态监测模块可实时监测外界环境的温度、光照度等参数,为整个系统的安全、稳定的运行提供保障,为区间测速系统提供高精度的系统实时时间的校准,测速仪瞬时速度的校准,通过大数据分析高精度的卫星授时模块和非接触式位移传感器数据,可显著提高区间平均速度结果的测量精度。(The invention relates to the technical field of instruments and meters, and discloses a motor vehicle field velocimeter calibration system based on wireless data communication, which comprises a main control device, an LED display module, a displacement sensor and an operation module, wherein the data output end of the main control device is in data connection with the data input end of the LED display module, the main control device is in bidirectional data connection with the operation device, and the data output end of the displacement sensor is in data connection with the data receiving end of the main control device. According to the motor vehicle field velocimeter calibration system based on wireless data communication, the state monitoring module can monitor parameters such as temperature and illuminance of an external environment in real time, guarantee is provided for safe and stable operation of the whole system, high-precision system real-time calibration and tachymeter instantaneous speed calibration are provided for an interval velocimeter system, high-precision satellite time service module and non-contact displacement sensor data are analyzed through big data, and measurement precision of interval average speed results can be remarkably improved.)

1. On-spot tachymeter calbiration system of motor vehicle based on wireless data communication, including master control equipment, LED display module, displacement sensor and operation module, its characterized in that: the data output end of the main control equipment is in data connection with the data input end of the LED display module, the main control equipment is in bidirectional data connection with the operation equipment, and the data output end of the displacement sensor is in data connection with the data receiving end of the main control equipment;

the main control equipment comprises a main control and data processing module, a satellite time service module, a satellite positioning module, a wireless communication module, a precise crystal oscillator module, a state monitoring module and a power supply voltage stabilizing module, wherein the wireless communication module is in bidirectional data connection with the operating equipment, and the output end of the displacement sensor is in data connection with the data receiving end of the wireless communication module;

the LED display module comprises a display driver 1, a display driver 2 and a display driver 3, and the data output end of the main control and data processing module is respectively in data connection with the data input ends of the display driver 1, the display driver 2 and the display driver 3.

2. The system for calibrating a motor vehicle field velocimeter according to claim 1, wherein the system comprises: the displacement sensor is a Kistler L350 non-contact displacement sensor of a device with a data output interface.

3. The system for calibrating a motor vehicle field velocimeter according to claim 1, wherein the system comprises: and the data output end of the operating equipment is connected with a network data server.

4. The system for calibrating a motor vehicle field velocimeter according to claim 1, wherein the system comprises: the main control and data processing module uses an ARM architecture chip.

5. The system for calibrating a motor vehicle field velocimeter according to claim 1, wherein the system comprises: the wireless communication module is a USR-C322 industrial-grade WIFI module.

6. The system for calibrating a motor vehicle field velocimeter according to claim 1, wherein the system comprises: the satellite time service module and the satellite positioning module both use an S1218 high-speed satellite module which simultaneously supports the Beidou and the GPS.

7. The system for calibrating a motor vehicle field velocimeter according to claim 1, wherein the system comprises: the state monitoring module comprises an illumination detection module, a battery detection module, a temperature detection module and a network detection module.

Technical Field

The invention relates to the technical field of instruments and meters, in particular to a motor vehicle field speedometer calibration system based on wireless data communication.

Background

Along with the leap-type development of highway traffic in China, the importance of the road traffic safety problem is increasingly presented. The motor vehicle velocimeter is one of important means for monitoring road traffic speed, provides important law enforcement basis for related departments while monitoring traffic conditions in real time to guarantee traffic safety, is closely related to the life of the masses, is concerned and valued by the whole society, further increases the investment of cities and provinces on road traffic safety in recent years, and has a great demand on the motor vehicle velocimeter, and various motor vehicle velocimeter manufacturing enterprises in China emerge like spring bamboo shoots after rain. How to effectively detect the quality of the motor vehicle velocimeters with different brands and principles provides a serious challenge for people;

at present, the motor vehicle velocimeter fixedly installed on the road is carried out in two steps of simulation detection and field detection in China, wherein the field detection mode is that a standard speed vehicle provided with a standard speedometer passes through a speed measuring area for multiple times in a real vehicle running mode, the indication value of the motor vehicle speedometer is compared with the indication value of the standard speedometer, the indication value of the standard speedometer in the detection method mainly comes from the fact that a detector intercepts the standard speed value in a manual mode for estimating the speed measuring snapshot area, the method has large uncertainty and low efficiency, can not be matched with the actual snapshot value of the speed measuring system in time point, the motor vehicle speed measuring instrument is an important law enforcement prop for controlling the vehicle running speed, ensuring the road traffic safety and punishing illegal traffic behaviors by public security authorities, therefore, whether the method is accurate or not has important significance for sustainable development of road traffic safety in China;

at present, manufacturers producing photoelectric non-contact velocimeters at home and abroad discover that the display device has certain defects through years of contact and use along with a speed display device matched with a product: the display information quantity is not enough, the device can only display the current speed value read from the non-contact velocimeter at present, and has no parameters such as current time, driving distance and the like, so that the difficulty in data comparison is caused, and the device cannot be used as a section speed measurement standard device in the future.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a motor vehicle field speedometer calibration system based on wireless data communication, which solves the problems that the existing display device has incomplete information display amount, can only display the current speed value read from a non-contact speedometer at present, does not have parameters such as current time, driving distance and the like, causes difficulty in data comparison, and cannot be used as a future interval speed measurement standard device.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the calibration system comprises a main control device, an LED display module, a displacement sensor and an operation module, wherein the data output end of the main control device is in data connection with the data input end of the LED display module, the main control device is in bidirectional data connection with the operation device, and the data output end of the displacement sensor is in data connection with the data receiving end of the main control device;

the main control equipment comprises a main control and data processing module, a satellite time service module, a satellite positioning module, a wireless communication module, a precise crystal oscillator module, a state monitoring module and a power supply voltage stabilizing module, wherein the wireless communication module is in bidirectional data connection with the operating equipment, and the output end of the displacement sensor is in data connection with the data receiving end of the wireless communication module;

the LED display module comprises a display driver 1, a display driver 2 and a display driver 3, and the data output end of the main control and data processing module is respectively in data connection with the data input ends of the display driver 1, the display driver 2 and the display driver 3.

Preferably, the displacement sensor is a Kistler L350 non-contact displacement sensor of a device with a data output interface.

Preferably, the data output end of the operating device is connected with a network data server.

Preferably, the main control and data processing module uses an ARM architecture chip.

Preferably, the wireless communication module is a USR-C322 industrial-grade WIFI module.

Preferably, the satellite time service module and the satellite positioning module both use an S1218 high-speed satellite module which simultaneously supports Beidou and GPS.

Preferably, the state monitoring module comprises an illumination detection module, a battery detection module, a temperature detection module and a network detection module.

(III) advantageous effects

Compared with the prior art, the invention provides a motor vehicle field velocimeter calibration system based on wireless data communication, which has the following beneficial effects:

1. the system can monitor the parameters of the external environment such as temperature, illuminance and the like in real time by the state monitoring module, provides data support for automatically adjusting the working state of equipment, can monitor the using state of a battery, the network connection state and the like in real time by the state monitoring module, provides guarantee for the safe and stable operation of the whole system, can use handheld operation equipment such as a mobile phone APP or flat software to set and store system parameters and test results and the like by the submodules of an LED display module, can take a snapshot of the LED display module by a camera of a highway tachymeter, can provide high-precision system real-time calibration for an interval system, and can calibrate the instantaneous speed of the tachymeter, meanwhile, the data of the high-precision satellite time service module and the non-contact displacement sensor are analyzed through big data, and the measurement precision of the interval average speed result can be obviously improved.

2. According to the motor vehicle field velocimeter calibration system based on wireless data communication, the precision crystal oscillator module is arranged, the precision crystal oscillator module improves the precision of real-time display, high-precision counting is carried out by the precision crystal oscillator module in the time updating interval of the satellite time service positioning chip, each time interval is accurately divided, and the actual real-time display precision can reach 0.01s or higher.

3. According to the motor vehicle field velocimeter calibration system based on wireless data communication, the illumination detection module is arranged, and the main control and data processing module respectively controls the display brightness of the display driver 1, the display driver 2 or the display driver 3 to the LED display module according to the built-in algorithm by sensing the ambient brightness through the photoresistor so as to achieve the change of the self-adaptive environment of the LED display module and improve the data snapshot effect of a camera of the highway velocimeter.

4. According to the motor vehicle field velocimeter calibration system based on wireless data communication, the network data server is arranged, so that data information received by the operating equipment can be stored in the network data server, the data information at different time periods can be conveniently inquired in the later period, and meanwhile, the situation that data is lost is avoided.

Drawings

FIG. 1 is a block diagram of a system for calibrating a vehicle field velocimeter based on wireless data communication according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the system comprises a main control device, an LED display module, a displacement sensor and an operation module, wherein the data output end of the main control device is in data connection with the data input end of the LED display module, the main control device is in bidirectional data connection with the operation device, and the data output end of the displacement sensor is in data connection with the data receiving end of the main control device;

furthermore, the displacement sensor is arranged on the motor vehicle, and meanwhile, equipment with a data output interface, such as a Kistler L350 non-contact displacement sensor, can be selected as the displacement sensor, so that the operation parameter data (including operation speed, driving distance and the like) of the motor vehicle can be captured on site through the displacement sensor;

furthermore, the operation equipment can be hand-held equipment such as a mobile phone, a tablet, a notebook computer and the like, and mobile phone APP or tablet software matched with the main control equipment is pre-installed in the operation equipment, so that data detected by the main control equipment can be transmitted into the operation equipment, the APP carried in the operation equipment can correspondingly control the main control equipment at the same time, and a data output end of the operation equipment is in data connection with a network data server, so that data information received by the operation equipment can be stored in the network data server, the data information at different time periods can be conveniently inquired at the later stage, and meanwhile, the data loss condition is avoided;

the system comprises a main control device, a displacement sensor, a satellite positioning device, a power supply voltage stabilizing device, a satellite timing module, a satellite positioning module, a wireless communication module, a precise crystal oscillator module, a state monitoring module and a power supply voltage stabilizing module, wherein the main control device comprises a main control and data processing module, a satellite timing module, a satellite positioning module, a wireless communication module, a precise crystal oscillator module, a state monitoring module and a power supply voltage stabilizing module;

in the scheme, an ARM architecture chip, such as a single chip microcomputer of the model STM32F103, is further used as a main control and data processing module;

in the scheme, the wireless communication module further uses a USR-C322 industrial-grade WIFI module produced by Jinan corporation;

in the scheme, a satellite time service module and a satellite positioning module both use a high-speed satellite module which simultaneously supports the Beidou and the GPS, such as a time service positioning module with the model of S1218;

in the scheme, the precision of real-time display is further improved by the precise crystal oscillator module, high-precision counting is carried out by the precise crystal oscillator module in the time updating interval of the satellite time service positioning chip, each time interval is accurately divided, and the actual real-time display precision can reach 0.01s or higher;

therefore, the displacement sensor captures the operation parameters of the motor vehicle on site, including the operation speed, the driving distance and the like, the displacement sensor rapidly, accurately and conveniently guides the detected data into the main control and data processing module through wireless data transmission and decodes the data, meanwhile, the satellite time service module obtains real-time through receiving satellite time service signals, and the main control and data processing module performs data fusion and storage on the obtained information;

further, the LED display module comprises a display driver 1, a display driver 2 and a display driver 3, the data output end of the main control and data processing module is respectively in data connection with the data input ends of the display driver 1, the display driver 2 and the display driver 3, so that the main control and data processing module is respectively sent into the LED display module in a wireless communication mode, and the display driver 1, the display driver 2 and the display driver 3 are respectively used for displaying information such as instantaneous speed, real-time, real-time mileage and the like on the LED display module, so that the LED display module is captured by a camera of the highway speedometer, high-precision system real-time calibration can be provided for an interval speedometer, and the speedometer instantaneous speed is calibrated;

in the scheme, the state monitoring module further comprises an illumination detection module, a battery detection module, a temperature detection module and a network detection module;

the illumination detection module is a photoresistor arranged in the main control equipment, so that the main control and data processing module respectively controls the display brightness of the display driver 1, the display driver 2 or the display driver 3 to the LED display module according to the built-in algorithm by sensing the ambient brightness according to the photoresistor, so that the LED display module can adapt to the change of the environment, and the camera of the expressway velocimeter can conveniently capture data;

furthermore, the battery detection module can inquire the battery power of the main control equipment at regular time, display the battery power on a display interface of the operation equipment in real time, and control program alarm and hardware warning lamp alarm in the operation equipment when the battery power is low;

the temperature detection module is further used for regularly detecting the battery service temperature of the main control equipment and the external environment temperature, displaying the detected data on a display interface of the operation equipment in real time, and performing program alarm and hardware warning lamp alarm when the temperature exceeds the safe service range, and automatically closing the system under extreme conditions;

and the network detection module is further used for detecting the network connection condition of the main control equipment at regular time, displaying the network connection state on a display interface of the operation equipment in real time, and giving an alarm by a program and a hardware warning lamp when a network connection fault occurs.

The working principle is as follows:

when the motor vehicle field velocimeter calibration system based on wireless data communication is used, the first step is as follows: the displacement sensor captures the running parameters of the motor vehicle on site, including running speed, running distance and the like, and quickly, accurately and conveniently guides the detected data into the main control and data processing module through wireless data transmission and decodes the data;

the second step is that: the satellite time service module obtains real-time by receiving satellite time service signals, the main control and data processing module performs data fusion and storage on the obtained information, the main control and data processing module is respectively sent into the LED display module in a wireless communication mode, and the display driver 1, the display driver 2 and the display driver 3 are respectively used for displaying information such as instantaneous speed, real-time, real-time mileage and the like on the LED display module, so that the LED display module is captured by a camera of the highway speedometer, high-precision system real-time calibration can be provided for an interval speedometer, and the speedometer instantaneous speed calibration can be provided;

the third step: the main control and data processing module simultaneously and synchronously sends the acquired information to the operating equipment in a wireless communication mode, the operating equipment decodes the information and displays real-time data, and meanwhile, the operating equipment receives the data information and synchronously stores the data information into the network data server, so that the data information at different time periods can be conveniently inquired at the later stage.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.