Wind pressure sensor
A wind pressure sensor and magnet technology, applied in the field of sensors, can solve problems such as inability to guarantee the consistency of zero point output, large measurement error and poor precision of wind pressure sensors, achieve short moving distance, increase measurement accuracy, and increase work efficiency Effect
Pending Publication Date: 2017-11-28
浙江华地电子有限公司
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is that the current wind pressure sensor still has the problem of large measurement error and poor precision, and cannot guarantee the consistency of zero point output
Method used
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Embodiment Construction
[0016] The present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.
[0017] like figure 1 As shown, the present invention provides a wind pressure sensor, including a base 100 and an upper cover 200 adapted to the base 100, a cavity 300 is formed between the base 100 and the upper cover 200, and a push plate 400 is provided in the cavity 300 , the two ends of the push plate 400 are arranged on the base 100 through the diaphragm 410, the middle part of the push plate 400 is provided with the first magnet 500 and the second magnet 510 in sequence from bottom to top, and the magnetic poles of the first magnet 500 and the second magnet 510 are parallel Setting, one side of the first magnet 500 and the second magnet 510 is provided with a Hall sensor 210 connected to the circuit board 220, a first spring 800 is provided between the push plate 400 and the base 100, the push plate 400 and the upper cover 200 There is a ...
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The invention discloses a wind pressure sensor which includes a base and an upper cover. A cavity with a push plate therein is formed between the base and the upper cover. The push plate is arranged on the base, and is provided with a first magnet and a second magnet arranged in parallel. A Hall sensor is arranged on one side of the first magnet and the second magnet. A first spring is arranged between the push plate and the base. A second spring is arranged between the push plate and the upper cover. The base is provided with an adjusting nut. The wind pressure sensor works based on double magnets. The magnetic field around the Hall sensor is nearly linear. The input pressure is directly proportional to the output signal. The measurement precision is improved, and the measurement error is reduced. The double magnets are arranged in parallel, so that the movement distance is short at work, and the work efficiency is increased. Under the action of the first spring and the second spring, the verticality of the first and second magnets during movement is ensured, the first magnet and the second magnet return to zero at the same position every time, and the consistency of zero output is ensured.
Description
technical field [0001] The invention relates to the field of sensors, in particular to a wind pressure sensor. Background technique [0002] Wind pressure sensor is the most commonly used sensor in industrial practice, also known as differential pressure sensor, which is widely used in various industrial self-control environments, involving boiler air supply, dust removal equipment, water conservancy and hydropower, railway transportation, intelligent buildings, production self-control , aerospace, military industry, petrochemical, oil well, electric power, ships, machine tools and pipelines and many other industries, the working principle of the wind pressure sensor is: the pressure of the wind pressure sensor acts directly on the diaphragm of the sensor, so that the diaphragm produces a The micro-displacement proportional to the pressure causes the magnetic field of the sensor to change, and the electronic circuit detects this change, and finally converts and outputs a sta...
Claims
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IPC IPC(8): G01L9/00G01L9/08G01L9/14
CPCG01L9/008G01L9/08G01L9/14
Inventor 陈华强陈鸿张振功
Owner 浙江华地电子有限公司