Surface acoustic wave pressure sensor based on multiple couplers

A pressure sensor and surface acoustic wave technology, which is used in the measurement of fluid pressure using piezoelectric devices, and the measurement of property forces using piezoelectric devices, to achieve the effects of high precision, good structural manufacturability, and high precision

Inactive Publication Date: 2012-03-28
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, traditional sensors are far from being able to meet the above requirements.

Method used

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  • Surface acoustic wave pressure sensor based on multiple couplers
  • Surface acoustic wave pressure sensor based on multiple couplers
  • Surface acoustic wave pressure sensor based on multiple couplers

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Experimental program
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Embodiment Construction

[0014] In order to make the present invention more comprehensible, a preferred embodiment is described in detail below with accompanying drawings.

[0015] like figure 1 As shown, the present invention provides a multi-coupler-based surface acoustic wave pressure sensor, including a coupler type surface acoustic wave pressure sensor, the input end of the coupler type surface acoustic wave pressure sensor is connected to the pressure test end, and its output end is connected to The single-chip microcomputer is connected in a bus mode, and a display module and a key module are connected to the single-chip microcomputer.

[0016] The single-chip microcomputer in this system adopts AT89C51, which is a low-power, high-performance CMOS 8-bit microcontroller with 8K in-system programmable Flash memory and does not require external expansion memory, which makes the structure of the whole system simple. The display module adopts 1602LCD display. The button module has a total of three...

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Abstract

The invention provides a surface acoustic wave pressure sensor based on multiple couplers, which is characterized by comprising a coupler type surface acoustic wave pressure sensor, the input end of the coupler type surface acoustic wave pressure sensor is connected with a pressure test end, the output end of the coupler type surface acoustic wave pressure sensor is connected with a singlechip by a bus manner, and the singlechip is connected with a display module and a key module. The surface acoustic wave pressure sensor based on the multiple couplers has the advantages of high precision, high sensitivity, convenience in large-batch production, small volume, light weight, low power consumption, convenience in maintenance and good structure process.

Description

technical field [0001] The invention relates to a pressure sensor. Background technique [0002] The current development trend of sensor technology is mainly: 1. From contact type to non-contact type, from passive type to active type (with signal processing circuit). 2. Realize multi-function, integration and intelligence. Multifunctionality means that a sensor can detect multiple parameters. Integration is the use of MEMS (Micro-Electro-Mechanical Systems, micro-electromechanical systems) technology to integrate sensitive components and processors on a chip; intelligence is the combination of sensors and ECUs. (Electronic Control Unit, that is, electronic control unit) combined with self-test, memory and calibration capabilities. 3. In order to realize the information sharing of sensors, new digital sensors must have embedded microprocessors, and some require digital output, which is suitable for bus requirements such as CAN bus and LIN bus. However, traditional sensors...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L9/08G01L1/16
Inventor 李媛媛卢文科朱瞿臻
Owner DONGHUA UNIV
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