Leakage Cable Detector Launcher and System with Automatic Temperature Compensation

Abstract

The invention discloses a leaking cable detector emitting device and a system with automatic temperature compensation function, so that the detector can still output stable transmitting power under the condition that the temperature in the field changes greatly, thereby ensuring the stability of equipment performance. The technical solution is: the transmitting device includes a crystal oscillator circuit, a driving circuit and a power amplifier circuit, wherein the crystal oscillator circuit generates a radio frequency signal, outputs it to the driver circuit to amplify and adjust the working frequency signal, and then transmits it to the power amplifier circuit After the power is amplified and output, the device also includes an automatic temperature control circuit, the output end of the automatic temperature control circuit is connected to the power amplifying circuit, and a variable regulating voltage is provided to adjust the output power of the power amplifying circuit.

Description

technical field [0001] The invention relates to a leaky cable detector, in particular to a leaky cable detector that can work normally in outdoor conditions where the ambient temperature changes greatly. Background technique [0002] Leakage cable intrusion detector is an outdoor perimeter intrusion detection device based on radio transmission, reception and signal processing. It is mainly used in banks, airports, villas, government agencies, public security prisons, military targets, enterprise warehouses and other important building perimeters The perimeter of the boundary, with the main purpose of security and alarm. The concealment of shallow buried underground installation, three-dimensional space protection against electromagnetic waves, and all-weather working features have gained more and more recognition from the market. [0003] The system consists of a detector host and two specially processed leakage cables. The detector host is composed of a transmitter, a rec...

AI Technical Summary

Problems solved by technology

The high temperature in summer in the south reaches 40℃~50℃, and the large temperature difference in the environment causes the instability of the machine performance, especially as the main component of the leakage cable intrusion detector, the transmitter unit is more affected by the temperature.

Because as the ambient temperature changes, the transmitting power of the transmitting device will also change significantly, and the sensitivity of the whole machine will change accordingly, and the working stability of the equipment will be greatly affected.

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