Antenna for wireless sensor of movement mechanism and wireless sensor with same

Abstract

The invention discloses an antenna for a wireless sensor of a movement mechanism and the wireless sensor with the antenna. The antenna comprises a printed circuit board, a flexible transmit-receive component and a connecting seat. The flexible transmit-receive component is connected with the printed circuit board, the flexible transmit-receive component is provided with a transmit-receive structure, the flexible transmit-receive component is at least partially made of a flexible material, the transmit-receive structure is at least partially made of a metal material, the transmit-receive structure is bent along with the flexible transmit-receive component to form a ring shape, and the transmit-receive structure is electrically connected to the printed circuit board; the connecting seat is connected with the printed circuit board, and the connecting seat is provided with a connecting structure used for being connected with a movement mechanism. Therefore, the antenna does not generate elastic deformation in the movement process, has excellent stability, does not affect the resonant frequency of the antenna compared with a spring antenna and potting structure, can stably receive and feed back electromagnetic signals, and ensures the accuracy of measurement of the temperature, pressure and the like of the movement mechanism.

Description

technical field [0001] The invention relates to the technical field of wireless passive detection, in particular to an antenna for a wireless sensor of a motion mechanism and a wireless sensor with the same. Background technique [0002] With the development of social industrialization and automation technology, various mechanical structures are widely used in various industries. At the same time, the wireless passive detection technology used to detect these mechanical structures has also developed rapidly. [0003] In the prior art, for example, in the electric power industry, there are many mature products of the surface acoustic wave temperature measurement technology. The surface acoustic wave temperature measurement sensors in these temperature measurement technologies have various shapes, but they are set in the temperature measurement sensor The inner antenna is usually designed as a helix. Among them, the application of the helical antenna on the static mechanical ...

AI Technical Summary

Problems solved by technology

Among them, the application of the helical antenna on the static mechanical structure can produce better results. However, for the dynamic mechanical structure, especially the high-speed mechanical structure, the temperature measurement sensor needs to move with the measured object. At this time, The antenna with the helical structure will be elastically deformed due to the centrifugal force, the stability is poor, and the signal of the temperature sensor will be distorted

Although the antennas in some temperature sensors can be injection-molded with appropriate potting materials to prevent antenna deformation, the resonant frequency of the antennas will change due to the addition of potting materials, which will also affect the signal quality of the temperature sensors.

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