ANTI-INTERFERENCE TEMPERATURE SIGNAL RECEIVING DEVICE AND SIGNAL PROCESSING METHOD

• Main Authors: WANG, Ning, YAO, Yanlong, LIU, Shaokan, CAI, Huaxing, LI, Zhongping, DONG, Qiming, WANG, Jian
• Format: Patent
• Language: Chinese; English; French
• Published: 23.02.2017
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; PHYSICS; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR; TRANSMISSION

An anti-interference temperature signal receiving device and method. The device comprises a digital signal processing chip, a transmission phase-locked loop local oscillator, a fixed intermediate frequency oscillator, a first mixer, a first band-pass filter, a power amplifier, a transceiver module, a second band-pass filter, a low noise amplifier, a receiving phase-locked loop local oscillator, a second mixer, a receiving intermediate frequency oscillator, a second receiving local oscillator, a third mixer, and a power supply circuit. The digital signal processing chip is configured to transmit, in advance and to the transmission phase-locked loop, a signal having a frequency exceeding or less than a reference signal frequency. Because a first intermediate signal, generated by the first mixer mixing an intermediate frequency signal generated by the fixed intermediate frequency oscillator and a stable transmitted output by the transmission phase-locked loop local oscillator, has a frequency consistent with the