Power supply apparatus and control method for hot petroleum pipeline leakage detection system

Abstract

Provided is a power supply apparatus for a hot petroleum pipeline leakage detection system and a control method for the apparatus. The invention is directed to the field of pipeline detection technology. The apparatus comprises a thermocouple, an intermediate conductor, a filtering rectification module, a charger, a charging power supply, a sensor communication apparatus and a DSP control module. The sensor communication apparatus comprises an accelerometer and a wireless communication module. The control method of the apparatus comprises: 1, calculating an open time t in one period; 2, converting an electromotive force signal into a rated voltage signal and inputting the rated voltage signal into the A/D sampling channel of the DSP control module; 3, determining the size of a pressure and whether a change curve is a abnormal pressure signal or not and 4, always running a program. The advantages of the invention are good power-saving and anti-shock performance, large temperature measurement range, simple manufacturing process and inexpensive price. Besides, the accuracy of the measurement is improved, the external interference from an extraneous environment is reduced and the rate of false alarm is substantially lowered.

Description

technical field [0001] The invention belongs to the technical field of pipeline detection, and in particular relates to a power supply device and a control method for a hot petroleum pipeline leakage detection system. Background technique [0002] With the development of in-pipeline detection technology, various advanced detection equipment are used in the field of pipeline leakage detection. At present, a large part of the positioning technology of pipeline leakage detection equipment is based on acceleration sensors and wireless communication devices. By placing acceleration sensors and wireless communication devices on land at a certain distance, after the acceleration sensors detect abnormal pressure signals, they will be received by wireless communication devices. The abnormal signal is transmitted to the host computer, and the host computer analyzes and processes the received pressure signal to accurately determine the leak location; since the acceleration sensor and c...

AI Technical Summary

Problems solved by technology

At present, a large part of the positioning technology of pipeline leakage detection equipment is based on acceleration sensors and wireless communication devices. By placing acceleration sensors and wireless communication devices on land at a certain distance, after the acceleration sensors detect abnormal pressure signals, they will be received by wireless communication devices. The abnormal signal is transmitted to the host computer, and the host computer analyzes and processes the received pressure signal to accurately determine the leak location; since the acceleration sensor and communication device are installed outdoors, such power supply becomes a difficult problem in the promotion of this technology, often due to its own Faults such as failure of the power supply system cannot send abnormal signals, and the control center loses contact with the ground, which affects the positioning of the upper computer, and some even cause serious economic losses

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