Non-contact Hall type electronic double-pulse speed mileage sensor
A sensor, Hall-type technology, applied in the field of automotive sensors, can solve problems such as poor anti-interference ability and environmental tolerance, improper selection of materials for various components, and blind spots in detection angles.
Inactive Publication Date: 2020-10-27
南京库尔卡传感科技有限公司
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Problems solved by technology
Most of them are non-contact Hall speed mileage sensors: due to different gear sizes, different magnetic strengths of magnets, different installation environments, unreasonable design of signal processing circuits, and improper selection of materials for various components, their adaptability is relatively poor; Contact Hall-type vehicle speed and mileage sensors still use the old-fashioned four-pin Hall element, there is a blind spot in the detection angle, poor high and low frequency performance, and strict requirements on the installation location and environment; while some non-contact Hall-type vehicle speed and mileage sensors can meet the above requirements Requirements, but the anti-interference ability and ability to withstand the environment in the complex environment of the vehicle are poor
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[0025] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0026] The technical scheme adopted in the present invention is:
[0027] A non-contact Hall-type electronic double-pulse speed mileage sensor, including a connector 1, an O-ring 2, a sensor housing 3, a circuit board 4 and a Hall assembly 5, such as figure 1 as shown, figure 2 shown and Figure 6 As shown, the right side of the connector 1 is electrically connected with an instrument panel 120, the connector 1 includes a circular plastic shell 11, the outer wall of the circular plastic shell 11 is respectively provided with side ears 12 fixedly connected with it, and the side ears 12 are respectively provided with The through hole 13 is fixedly connected, and the circular plastic is provided with an exhaust hole 14, which is used to facilitate the distribution of internal gas. The left side of the circular plastic shell 11 is stepped, an...
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The invention discloses a non-contact Hall type electronic double-pulse speed mileage sensor, and aims to provide a sensor which is quick in response, high in measurement precision, strong in anti-interference capability and excellent in high-low frequency performance. Key points of the technical scheme are as follows, the non-contact Hall type electronic double-pulse speed mileage sensor comprises a connector, an O-shaped ring, a sensor shell, a circuit board and a Hall assembly; an instrument panel is connected to one side of the connector, the connector comprises a circular plastic shell, and the circular plastic shell is connected with the O-shaped ring; a plurality of fixing columns are arranged in the circular plastic shell, and contact pins are arranged on the fixing columns; a plurality of bonding pads are connected to the circuit board; and the Hall assembly comprises a permanent magnet, a Hall lower framework is arranged on one side of the permanent magnet, pin via holes areformed in the Hall lower framework, a Hall element is connected to the other side of the permanent magnet, and a Hall upper framework is connected to one side of the Hall element. The mechanism has the advantages of high response speed, high measurement precision, strong anti-interference capability and excellent high and low frequency performance during operation.
Description
technical field [0001] The invention relates to the technical field of automobile sensors, in particular to a non-contact Hall-type electronic double-pulse speed mileage sensor. Background technique [0002] Speed mileage sensors are commonly used in vehicle gearboxes (other applications are also gradually being promoted: such as retarders, high-precision textile machinery, motor speed monitoring, etc.), and are used to monitor the crankshaft angle, camshaft position and gear rotation speed of the gearbox. The key components of the vehicle speed sensor are divided into: magnetoelectric type, Hall type, and photoelectric type. Among them, the non-contact Hall type speed mileage sensor uses Hall elements to convert gear rotation into electrical signal output, and the driving dial displays real-time speed and Mileage, electrical signals can also be used in vehicle speed control circuits and automatic shift systems. [0003] At present, there are many non-contact Hall-type sp...
Claims
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IPC IPC(8): G01P3/481G01C22/00
CPCG01P3/481G01C22/00
Inventor 于秀福
Owner 南京库尔卡传感科技有限公司