SENSOR, TELEMETER, WIRELESS SENSOR SYSTEM AND USE METHOD THEREOF

摘要

The present invention relates to sensor system. Disclosed are a sensor, a telemeter, a wireless sensor system and a use method therefor. The wireless sensor system of the present invention comprises a telemeter and at least one sensor. The sensor and the telemeter switch between a digital communication mode and an analog sensing mode, where the digital communication mode is used for finding and activating a target sensor on basis of whether or not a target address coding matches with a preset address coding, the analog sensing mode is used for transmitting an analog sensing signal of the target sensor to extract a to-be-extracted sensitive variable, remaining sensors are in a standby state and do not reflect a sensing signal, and only an address coding used for a chip select of sensors. This fundamentally prevents a conflict of multiple sensors in a same communication area, and allows for an increased volume to be provided by utilizing a limited code length, reliably increases sensor capacity in a frequency band and measurement accuracy and speed, reduces power consumption and expands communication range, and allows sensors to be used in near-field coupling and intermediate-remote distance telemetry.

主权项

1. A sensor, wherein the sensor comprises:
a radio frequency identification tag which performs a digital communication with a telemeter and judges whether a preset address code matches with a target address code of the telemeter according to a digital communication signal received from the telemeter in a digital communication mode; and if not matched, the sensor maintains the digital communication mode, and if matched, the sensor is a target sensor, and the radio frequency identification tag of the target sensor turns on a first switch so that the target sensor enters an analog sensing mode; in the analog sensing mode, input of the radio frequency identification tag of the target sensor is in a high impedance state, and the radio frequency identification tag of the target sensor turns off the first switch after an analog sensing module has reflected an analog sensing signal so that the target sensor switches back to the digital communication mode; the first switch which turns on or turns off an analog communication between the analog sensing module and the telemeter; and the analog sensing module which reflects the analog sensing signal to the telemeter in the analog sensing mode.