Anti-theft automatic detection device for steam injection pipe network

The utility model provides an anti-theft automatic detection device for the steam injection pipe network, comprising a central monitoring station and a pipeline detecting instrument. The central monitoring station comprises an antenna, a receiver, an industrial control computer, a controller and an alarm which are sequentially in electrical connection, and a power supply unit which is connected with the receiver, the industrial control computer, the controller and the alarm in parallel. The receiver, the industrial control computer, the controller, the alarm and the power supply unit are arranged in a control stand. The pipeline detecting instrument comprises a sensor, a central processing unit (CPU) signal acquisition, a recognizing and processing device, a filter circuit which is controlled by the recognizing and processing device and transfers the signal and is in electrical connection with the recognizing and processing device, a power supply voltage failure detecting circuit, a sensor failure detecting circuit, a signal modulation transmitting circuit, a transmission controller circuit, a voltage amplifier which is in electrical connection with the sensor and the filter circuit, and a multipoint detecting unit which coordinates the action. The sensor and the voltage amplifier are in electricalconnection with the sensor failure detecting circuit. The utility model is widely applied to the failure and theft protection detecting technology of the pipe networks of the petroleum, the chemical industry, etc.