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Soil thermal-physical data acquisition and equipment automatic control system

A data acquisition and equipment control technology, applied in general control systems, control/regulation systems, program control, etc., can solve problems such as single constant power or constant temperature, achieve self-protection, reduce labor intensity, and improve test accuracy Effect

Inactive Publication Date: 2017-05-31
NANJING POLYTECHNIC INSITUTE
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing soil thermophysical property testing devices, the heat transfer test is often carried out in a single way of constant power or constant temperature, and it is not possible to perform various tests on the underground heat transfer environment to obtain accurate soil thermophysical property parameters.

Method used

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Embodiment approach

[0022] The system structure of the present invention is as figure 1 As shown, the whole system includes: PLC controller, PLC analog module, master station computer, client computer, bus cable, communication cable, control cable, shielded cable, sensor group, valve group, flow regulating valve, heater, Power regulator, water pump, alarm buzzer group. The connection sequence of its positions is: the heater, the valve group, the water pump, the alarm buzzer group and the PLC controller are connected through control cables; The PLC analog module is connected; the PLC controller is connected with the PLC analog module through a bus cable; the PLC controller is connected with the master station computer through a communication cable; the client computer and the master station computer communicate with each other through the Internet transfer data.

[0023] Working principle: During the test process, the PLC analog module collects real-time data of various parameters of the sensor ...

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Abstract

The invention relates to a soil thermal-physical data acquisition and equipment automatic control system. The system comprises a PLC controller (3), a PLC analog module (4), a master station computer (2), a client computer (1), a sensor group (9), a valve group (7), a flow regulation valve (10), a heater (6), a power regulator (11), a water pump (8), and an alarm buzzer (5). The system can achieve multiparameter parallel data acquisition and equipment automatic control. Through software programmed by graphical programming software, the system provided by the invention realizes serial communication of the master station computer (2) and the PLC controller (3) based on free port communication technology, and completes data acquisition and equipment automatic control. The client computer (1) can achieve real-time viewing of test data and manual operation and control of equipment. The PLC controller (3) can realize on-line condition monitoring and fault diagnosis analysis, and can automatically complete PID feedback control and alarm, or achieve or manual operation and control of equipment when failure occurs.

Description

technical field [0001] The invention relates to a soil thermophysical property data acquisition and equipment control system developed based on graphical programming software and PLC free port communication technology, belonging to the fields of geothermal energy utilization, data acquisition, instrument equipment control and the like. Background technique [0002] Ground-source heat pumps are attracting more and more attention because of their low consumption, high efficiency, environmental protection and non-pollution, and they are the main way for the development and utilization of shallow ground energy in my country. The core technology of soil source heat pump lies in the calculation of underground heat transfer load. Understanding the heat transfer performance of underground soil is the basis for accurate calculation of underground heat transfer load. Otherwise, the load design will be too large, which will cause the initial investment of the project to increase and was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20G05B19/05
CPCG05B19/058G01N25/20
Inventor 金良冯秀刘其和魏龙贲宝峰
Owner NANJING POLYTECHNIC INSITUTE
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