Signal generating device and magnetic sensor gas flow meter
A technology of a signal generating device and a flow meter is applied in the field of flow meters to achieve the effects of reducing acquisition interference pulses, simple connection structure and improving accuracy
Pending Publication Date: 2019-03-12
QIANWEI KROMSCHRODER METERS CHONGQING
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Problems solved by technology
[0005] Aiming at the deficiencies in the prior art, the present invention provides a signal generating device and a magnetic sensor gas flowmeter, which solves the problem of the accuracy of the signal generated by the flow detection part
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Embodiment 2
[0037] like Figure 6 As shown, on the basis of Embodiment 1, the first magnetic sensor and the second sensor are respectively the diameter of the circular motion of the A magnetic sensor and the B magnetic sensor, and the distance between the first magnetic sensor and the second sensor is L , the value range of L is 16-20mm; the distance between the center of circular motion and the center of the first magnetic sensor is L3, the value range of L3 is 2-12mm, the distance between the center of the first magnetic sensor and the center of the Hall sensor is L1, L1 The value range of H is 10-12mm; the distance from the center of circular motion to the center line of the two magnetic sensors 4 is H, and the value range of H is 2-5mm. Under these values, the output signal interference of the signal generating device is the least. The calculation method is as follows:
[0038] According to the Pythagorean theorem, the horizontal distance between the flow sensor and receiver can be ...
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The invention discloses a magnetic sensor gas flow meter. Parts of a signal generating device are combined with the specific structure of the flow meter, the connection structure is simple, the signalgenerating device is effectively combined, and the signal collecting precision of the flow meter is improved. Two magnetic sensors include the first magnetic sensor and the second sensor. The distance between the diameter of the circling motion and the first magnetic sensor and the second sensor is L, and the value range of L is 16-20 mm. The distance between the center of the circling motion andthe center of the first magnetic sensor is L3, and the value range of L3 is 2-12 mm. The distance between the center of the first magnetic sensor and the center of a Hall sensor is L1, and the valuerange of L1 is 10-12 mm. The distance between the center of the circling motion and the connecting line of the centers of the two magnetic sensors is H, and the value range of H is 2-5 mm. According to the specific values, signals generated by the signal generating device are the most accurate.
Description
technical field [0001] The invention relates to the technical field of flowmeters, in particular to a signal generating device and a magnetic sensor gas flowmeter. Background technique [0002] At present, the Internet of Things membrane flowmeter adopts 2G communication. Although it can meet the requirements of Internet of Things communication, its networking time is long and power consumption is high. The performance of traditional mechanical natural gas meters has gradually become obsolete, and smart natural gas meters are now mainstream products, among which IoT natural gas meters are the most promising. A magnetic sensor is a sensor that converts changes in the magnetic properties of sensitive components caused by magnetic fields, currents, stress and strain, temperature, light, etc. into electrical signals, and detects corresponding physical quantities in this way. Magnetic sensors are widely used in the industrial field, and they are also showing a rapid growth trend...
Claims
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IPC IPC(8): G01F1/58
CPCG01F1/582
Inventor 周才科曾志鸿陈亚武
Owner QIANWEI KROMSCHRODER METERS CHONGQING