Frequency Hopping Spread Spectrum Communication Method Based on Bridge Adjustable Wireless Strain Sensing Device

Abstract

The invention relates to a frequency-hopping spread-spectrum communication-based bridge circuit-adjustable wireless strain sensing device. The frequency-hopping spread-spectrum communication-based bridge circuit-adjustable wireless strain sensing device is composed of a lithium battery output voltage conversion and voltage stabilizing circuit, a plurality of bridge circuit gating circuits, a signal conditioning circuit, a CPU chip and peripheral circuit and a wireless transmitting module circuit; the frequency-hopping spread-spectrum communication-based bridge circuit-adjustable wireless strain sensing device is used for detecting the strain data of a force bearing object. The invention also provides a communication method which is a bridge circuit-adjustable wireless frequency-hopping spread-spectrum communication method and is applied to wireless strain receiving and transmitting modules; and the communication method is used for realizing the detection of the strain of the force bearing object. With the device and the communication method of the invention adopted, the gating and measurement of a plurality of kinds of strain electric bridge circuits can be realized, and the reliability and flexibility of the wireless communication of strain data can be improved, and the attenuation of wireless transmission signals is small, and the diffraction ability of the wireless transmission signals is strong.

Description

technical field [0001] The invention relates to a device for detecting strain information using resistive strain gauges, in particular to a bridge-adjustable wireless strain sensing device using wireless frequency-hopping spread-spectrum communication and a frequency-hopping spread-spectrum communication method thereof. Background technique [0002] As infrastructure such as transmission line iron towers, hydraulic supports, large gantry cranes, and large iron cable bridges are related to production and people's livelihood, long-term effective and reliable monitoring and treatment of their status is crucial to the investigation of potential safety hazards. The existing monitoring of mechanical equipment is mainly to attach the strain gauge to the surface of the component to be tested, and then connect it to the strain gauge through the lead wire. The strain gauge and its internal circuit form a strain bridge, and the strain gauge is measured according to the resistance strain...

AI Technical Summary

Problems solved by technology

Although this invention has the flexible characteristics of bridge matching, its innovation is still limited to the design of the strain acquisition circuit, and does not propose an effective method for external transmission of strain data

[0008] In the above prior art, the wireless strain sensing device still has certain deficiencies in the flexibility of use and the reliability of wireless transmission.

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