Displacement magnetic shield type tire pressure detection device
A technology of air pressure detection and magnetic shielding, which is applied in tire measurement, tire parts, transportation and packaging, etc. It can solve problems such as battery replacement, affecting vehicle driving safety, complex circuit structure, etc., and achieves the effect of simple circuit and convenient installation
Inactive Publication Date: 2017-12-15
HUBEI UNIV OF ARTS & SCI
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Problems solved by technology
[0002] During the driving process of the vehicle, the tire pressure is too low or too large will affect the safety of the vehicle, so it is necessary to develop an online real-time tire pressure detection system
The existing tire pressure detection system adopts the wireless transceiver type, and its disadvantage is that the circuit structure is complex and the battery needs to be replaced frequently
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[0008] like figure 1 shown. The displacement magnetic shield type tire air pressure detection device of the present invention comprises a permanent magnet 3, a silicon steel sheet 2, an expansion film 1, an air circuit 9 and an air pressure detection control circuit. Wherein, the air passage 9 is a metal tube made of aluminum alloy with one end closed and the other open. The open end of the aluminum alloy metal pipe is connected to the middle part of the tire air pipe, so that the air passage 9 is embedded in the inner side of the wheel axle and the magnet on the brake hub. The position corresponding to the sensitive sensor. The expansion membrane 1 is connected and fixed on the inner wall of the air passage 9, the expansion membrane 1 is a circular expansion membrane made of rubber, the periphery of the expansion membrane 1 is fixedly connected on the inner wall of the air passage 9, the diameter of the expansion membrane 1 is smaller than the inner diameter of the air passa...
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The invention relates to a displacement magnetic shielding type tire air pressure detecting device, belongs to the technical field of tire air pressure detection, and mainly solves the problems that a circuit structure is complex and cells need to be changed frequently in a conventional tire air pressure detecting system. The displacement magnetic shielding type tire air pressure detecting device is mainly characterized in that an air path is a metal pipe made of aluminum alloy materials, one end of the metal pipe is closed, the other end of the metal pipe is open, and the open end of the metal pipe is connected with a tire air pipe; a silicon steel sheet and an expanded film are connected and fixed, and the expanded film is connected and fixed to the inner wall of the air path; a permanent magnet is connected and fixed to the inner wall of the air path near the closed end, and is magnetically matched with the silicon steel sheet; an air pressure detection control circuit comprises a magnetic sensor circuit, a signal conditioning circuit, a comparator circuit, a system control circuit and a warning circuit, wherein a magnetic sensor of the magnetic sensor circuit is mounted on a brake hub. The displacement magnetic shielding type tire air pressure detecting device disclosed by the invention has the characteristics that a power supply does not need to be mounted in a tire, the circuit is simple and the displacement magnetic shielding type tire air pressure detecting device is convenient to mount, and is mainly used for real-time online detection of the air pressure of a vehicle tire.
Description
technical field [0001] The invention belongs to the technical field of tire pressure detection, and relates to a displacement magnetic shield type tire pressure detection device, in particular to a real-time on-line tire pressure detection device for vehicles. Background technique [0002] During the running of the vehicle, too low or too high tire pressure will affect the safety of the vehicle, so it is necessary to develop an online real-time tire pressure detection system. The existing tire pressure detection system adopts the wireless transceiver type, and its disadvantage is that the circuit structure is complicated, and the battery needs to be replaced frequently. Contents of the invention [0003] The object of the present invention is to provide a real-time on-line tire pressure detection device, which uses a magnetic sensor circuit and a permanent magnet for detection. The tire air pressure detection device does not need to install a power supply in the tire, has...
Claims
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IPC IPC(8): B60C23/04
Inventor 蔡兵
Owner HUBEI UNIV OF ARTS & SCI