Leakage cable detector transmitting device with temperature automatic compensation function and system thereof

Abstract

The invention discloses a leakage cable detector transmitting device with a temperature automatic compensation function and a system thereof so that a detector is enabled to output stable transmitting power under the situation of high field temperature variation, and stability of equipment performance is guaranteed. The technical scheme is that the transmitting device comprises a crystal oscillation circuit, a push circuit and a power amplification circuit. The crystal oscillation circuit generates a radio working frequency signal to be outputted to the push circuit so that the working frequency signal is amplified and adjusted, and then transmitted to the power amplification circuit to be power-amplified and then outputted. The device also comprises a temperature automatic control circuit. The output end of the temperature automatic control circuit is connected with the power amplification circuit, and variable adjustment voltage is provided to adjust size of output power of the power amplification 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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