Latitude and longitude vehicle speed measuring system based on filter circuit

Abstract

The invention discloses a latitude and longitude vehicle speed measuring system based on a filter circuit. The system comprises a microcontroller module, a positioning module, a clock module, an amplification circuit, a filter circuit and a power supply module. The positioning module and the clock module are connected with the microcontroller module through the amplification circuit and the filter circuit connected in order. The power supply module comprises a charging device, a cell, a voltage stabilizer and a comparator. The charging device is connected with a cell. The cell is connected with the microcontroller module through the voltage stabilizer.

Description

technical field [0001] The invention relates to a speed measurement system, in particular to a latitude and longitude vehicle speed measurement system based on a filter circuit, which belongs to the field of vehicle speed detection. Background technique [0002] With the development of the economy, the transportation industry is becoming more and more prosperous. However, due to the difficulty in keeping up with hardware such as road conditions and traffic management, coupled with subjective principles such as driving overtaking, leaving the car to drive away, and misestimating the distance between cars, traffic accidents collide frequently. occur. The fundamental measure to solve this problem is to install a device that can automatically track and measure distances and automatically brakes in dangerous distances for moving cars. [0003] Due to the development of electronic technology, laser ranging, microwave radar ranging, ultrasonic ranging and infrared ranging have app...

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Problems solved by technology

[0006] For example, a two-way infrared range finder with the application number "201410118986.2" relates to an infrared range finder. In order to solve the problem that the existing infrared range finder is difficult to measure the distance to be measured at any position in a large space, the invention includes Liquid crystal display screen, the first infrared receiving module, the first infrared emitting module, the second infrared receiving module, the second infrared emitting module, processor, A / D conversion module, power supply module and outer casing, the upper surface of the outer casing is provided with A transparent window, the liquid crystal display screen is set in the window, a No. 1 hole and a No. 2 hole are respectively opened on one side wall of the outer casing, and a coaxial No. 3 hole is opened corresponding to the No. 1 hole, and a No. 2 hole is opened corresponding to the No. 2 hole. There is a coaxial No. 4 hole, the first infrared signal output port is placed in the No. 1 hole, the first infrared receiving signal input port is placed in the No. 2 hole, the second infrared signal output port is placed in the No. 3 hole, and the second The input end of the infrared receiving signal is placed in the fourth hole

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