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A passive flow sensor and passive flow measurement display control system

A flow sensor and display control technology, applied in the field of flow sensors, can solve the problems of flow sensors relying on external power supply, easy damage, etc., and achieve the effect of simple structure, convenient and reliable use

Active Publication Date: 2018-12-04
常州孚技自动化设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a passive flow sensor and a passive flow measurement display control system to solve the technical problems of traditional flow sensors relying on external power supply and easily damaged

Method used

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  • A passive flow sensor and passive flow measurement display control system
  • A passive flow sensor and passive flow measurement display control system
  • A passive flow sensor and passive flow measurement display control system

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Experimental program
Comparison scheme
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Embodiment 1

[0022] Such as figure 1 As shown, a passive flow sensor of the present invention includes: a sensor body, an impeller 1 suitable for fluid-driven rotation is installed at the front end of the sensor body, wherein the blades of the impeller 1 are magnetic blades; and the passive flow sensor It also includes: a coil suitable for coupling with the magnetic field generated by the rotation of the impeller 1, and the output end of the coil is connected with the signal output line located on the sensor body.

[0023] The definition of passive in the present invention is: the passive flow sensor itself does not need external power supply or internal power supply, that is, the detection of fluid flow and flow velocity is completed without power supply.

[0024] The magnetic field generated by the rotation of the impeller generates an induced voltage through the coil, and the specific induced voltage is as follows: figure 2 shown.

[0025] Regarding the output waveform diagram of thi...

Embodiment 2

[0035] Such as image 3 As shown, on the basis of Embodiment 1, this embodiment provides a passive flow measurement and display control system, including a control unit connected to at least one of the passive flow sensors; the control unit includes: The first multi-channel selection switch, the signal output lines of each passive flow sensor are respectively connected to the input ends of the first multi-channel selection switch through corresponding diodes, and the output terminals of the first multi-channel selection switch are connected through the main The comparison circuit is connected with the main processor module, and the main processor module is also connected with the main liquid crystal module; the control terminal of the multi-channel selection switch is connected with the first control output terminal of the main processor module.

[0036] Further, the control unit further includes: a main power-taking unit, the input end of the main power-taking unit is connect...

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Abstract

The invention relates to a passive flow sensor and a passive flow measurement and display control system. The passive flow sensor comprises a sensor body, an impeller suitable for being driven by fluid to rotate is arranged at the front end of the sensor body, and magnetic blades are adopted as blades of the impeller. The passive flow sensor further comprises a coil suitable for being coupled with a magnetic field generated by rotation of the impeller, and the output end of the coil is connected with a signal output line on the sensor body. According to the passive flow sensor and a flow device with the sensor, the flow sensor can normally work under passive conditions, the limit that a traditional Hall sensor depends on a power source is removed, the flowing speed and flow of the fluid can be measured and displayed in the open air and on occasions without external power source power supply, and the advantages of being convenient and reliable to use and simple in structural manufacturing are achieved.

Description

technical field [0001] The invention relates to a flow sensor, in particular to a passive flow sensor and a passive flow measurement display control system. Background technique [0002] The sensing devices currently used to measure the velocity of water flow are generally called flow sensors. However, the traditional flow sensor achieves flow counting through Hall sensors, impellers and other components, and the work of Hall sensors depends on independent power supply, which requires a certain amount of power consumption; because it is an active device, it is very easy to have external interference coupling voltage, current , temperature, excessive noise and other external factors may cause damage. [0003] Therefore, in some special occasions, if there is leakage or interference in the external environment, it is easy to cause damage to the flow sensor or detection error. Contents of the invention [0004] The purpose of the present invention is to provide a passive fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F15/06G01F15/075
Inventor 沈超柯红秀
Owner 常州孚技自动化设备有限公司