On-line monitoring capacitive sensor

A capacitor and sensor technology, applied in the field of online monitoring of capacitive sensors, can solve problems such as environmental monitoring lag, and achieve the effect of remote sharing of big data and unattended remote monitoring

CN111307887AActive Publication Date: 2020-06-19武智瑛
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-06-19

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Abstract

The invention provides an on-line monitoring capacitive sensor. The sensor comprises a capacitor, a capacitor dielectric core, a pollutant injection mechanism, a charging and discharging oscillation circuit, a high-frequency pulse reading unit and a CPU processing unit. Two parallel polar plates of the capacitor are connected to the charging and discharging oscillation circuit; the charging and discharging oscillation circuit can charge and discharge the two parallel polar plates of the capacitor to obtain a high-frequency pulse signal, the high-frequency pulse signal is sent to the high-frequency pulse reading unit through the output end of the charging and discharging oscillation circuit, and the high-frequency pulse reading unit sends the read pulse signal to the CPU processing unit. Physical quantities are converted into high-frequency pulse signals, the physical quantities are monitored by monitoring the numerical values of the high-frequency pulse signals, and different monitoredenvironmental pollution can be sprayed to a capacitor dielectric core.
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Description

Technical field

[0001] The invention belongs to the technical field of environmental monitoring, and specifically relates to an online monitoring capacitive sensor. Background technique

[0002] The core technology of environmental monitoring lies in the collection and processing capabilities of sensors. In our country, the monitoring links of many media such as water, gas, and soil cannot fully meet the requirements of online real-time monitoring, which leads to the lag of environmental monitoring. The traditional sensor converts the physical quantity to be measured into a voltage or current value, and completes the monitoring of the physical quantity by monitoring the magnitude of the voltage or current. Summary of the invention

[0003] The invention provides an on-line monitoring capacitive sensor, which obtains corresponding pulse signals by performing high-frequency charging and discharging on the capacitors at both ends of the dielectric core, and then performs calibration ...

Examples

Embodiment Construction

[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described clearly and completely in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0030] Such as Figure 1-6 As shown, the online monitoring capacitive sensor of the present invention includes a capacitor formed by the automatic arrangement of two parallel plates, and a capacitor medium that can be transported between the two parallel plates under the drive of an automatic transmission mechanism. The core, the pollutant ejection mechan...