A passive surface acoustic wave sensing device and smart tire
A sensing device, surface acoustic wave technology, used in tire measurement, tire parts, transportation and packaging
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Embodiment 1
[0025] Embodiment 1, this embodiment provides a passive surface acoustic wave sensing device, such as figure 1 As shown, it includes a base 1 and a surface acoustic wave sensor 2, the base 1 and the surface acoustic wave sensor 2 are detachably connected, the base 1 at least includes a circuit board 101 and an antenna 102 arranged on the circuit board 101, Such as figure 2 As shown, it is a front view of the circuit board 101, the circuit board 101 is provided with a contact 103 electrically connected to the antenna 102, as image 3 As shown, the surface acoustic wave sensor 2 has pins 201 corresponding to the contacts 103 one by one, and when installed on the base 1, the pins 201 are electrically connected to the corresponding contacts 103 . The passive surface acoustic wave sensing device of this embodiment utilizes the principle of surface acoustic wave sensing, and is a passive detection device that sends an inquiry signal to it through the outside world. Since the pass...
Embodiment 2
[0035] Embodiment 2, based on the passive surface acoustic wave sensing device in embodiment 1, this embodiment provides a smart tire, including the passive surface acoustic wave sensing device described in embodiment 1, base 1 fixed on the inner surface of the tire.
[0036] Preferably, the base 1 is vulcanized and fixed on the inner surface of the tire.
[0037] As a preferred embodiment, in order to fully expose the pressure-sensitive cover of the surface acoustic wave sensor 2 to the air pressure environment in the tire, and there should be no rubber extrusion at the edge of the metal cover of the surface acoustic wave sensor 2, because it will affect the acoustic pressure. The surface wave sensor 2 senses the pressure, such as Figure 5 As shown, before the base 1 is vulcanized and fixed on the inner surface of the tire, it also includes a metal cover 3 covering the upper surface of the circuit board 101, and the metal cover 3 is provided with a When the metal cover is ...
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