Network digital instrument for sensor with GPRS function

Abstract

A network digital instrument for sensor with GPRS function comprises a signal control processing circuit, a GPRS communication functional module and the power supply circuit of the module. The invention adopts the following key technical points: the measurement chip U3 which is arranged inside the signal control processing circuit is connected with the 4 mA-20 mA standard signal of any sensor P used in industrial field; data transmission is directly connected with a control processing chip U1 which is connected with a GPRS communication functional module U11; data is transmitted and received by means of the U11 via a mobile communication network. With reasonable and simple structural design, better anti-interference performance, easy operation and convenient adjustment, the invention not only provides reliable guarantee for online automatic measurement and transmission of manufacturing parameter in complex industrial production field, but also reduces measurement cost and substantially increases accuracy and timeless of measurement; moreover, the invention greatly increases work efficiency and reduces labor intensity, thereby being more suitable for monitoring operation with exposure to toxic and harmful chemicals.

Description

technical field [0001] The invention relates to a secondary digital meter for digital networking, in particular to a sensor network digital meter with GPRS (English abbreviation for General Packet Radio Service) function integrating multiple functions. It is mainly suitable for on-line measurement, metering and control in oil field, chemical industry, electric power, heating, water supply and other industries to realize network management, and it can also be used in other similar industries. Background technique [0002] At present, the measurement, measurement and control of production operations in oil fields, chemicals, electric power, heating, water supply and other industries are important factors to ensure the normal operation of production and product quality. In many circumstances, manual measurements cannot be performed and cannot be guaranteed to be accurate. The digital secondary instrument used for the sensor is the necessary guarantee to complete this task. Th...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a sensor network digital instrument with GPRS function, which has a simple and reasonable structural design and effectively solves the defects in the prior art such as unstable measurement, poor anti-interference performance, and easy interference in transmission. , it is easy to operate and convenient to adjust, which not only provides a reliable guarantee for the on-line automatic measurement and transmission of industrial production parameters, but also reduces the cost of measurement, significantly improves the accuracy and timeliness of measurement, significantly improves work efficiency and reduces the workload of operators Labor intensity, more conducive to the monitoring of toxic and harmful operations

Images