A study of measurement method using synchronous detector for variable capacitance multi-point pressure sensor

2017 ◽  
Vol 2017 (0) ◽  
pp. 2A2-L11
Author(s):  
Junya TSUEDA ◽  
Hiroki ICHIKAWA ◽  
Kazushige MAGATANI
Keyword(s):  
Pressure Sensor ◽  
Measurement Method ◽  
Synchronous Detector ◽  
Variable Capacitance ◽  
Point Pressure

scholarly journals Non-destructive residual pressure self-measurement method for the sensing chip of optical Fabry-Perot pressure sensor

2017 ◽  
Vol 25 (25) ◽  
pp. 31937 ◽  
Author(s):  
Xue Wang ◽  
Shuang Wang ◽  
Junfeng Jiang ◽  
Kun Liu ◽  
Xuezhi Zhang ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
Measurement Method ◽  
Residual Pressure ◽  
Fabry Perot ◽  
Non Destructive

Compensation Research of Engine Oil Pressure Sensor Based on MEMS

2013 ◽  
Vol 325-326 ◽  
pp. 765-768
Author(s):  
Sheng Bing Yang ◽  
Shuai Wang ◽  
Yan Xia Su ◽  
Feng Xu ◽  
Zhen Zhen Li
Keyword(s):  
Pressure Sensor ◽  
Temperature Compensation ◽  
Output Voltage ◽  
Zero Point ◽  
Engine Oil ◽  
Lubrication System ◽  
Working Process ◽  
Point Pressure ◽  
Process Engine ◽  
Pressure Compensation

The engine lubrication system plays an important role in the engine working process. Engine electronic oil pressure sensor based on piezoresistor pressure sensor MEMS with contactless measure technology is designed in this paper. This sensor includes a signal disposal chip which provides zero point pressure compensation, temperature compensation and sensitivity compensation and a chip which is used to adjust the duty cycle according to the output voltage of the signal disposal chip. The experiments show that the Engine electronic oil pressure sensor works well with excellent characteristic.

Some New Developments in Fluidic Circuit Design

1984 ◽  
Vol 106 (3) ◽  
pp. 231-235
Author(s):  
T. M. Drzewiecki
Keyword(s):  
Circuit Design ◽  
Pressure Sensor ◽  
Solid Wall ◽  
Wheatstone Bridge ◽  
Temperature Sensitive ◽  
New Developments ◽  
Set Point ◽  
Output Pressure ◽  
Point Pressure ◽  
Controlling Element

This paper presents several new developments in fluidic circuit design. The use of orifices and capillaries, as input and feedback resistors, and vice-versa, in an operational amplifier circuit is shown to result in a scaler whose gain varies either directly or inversely in proportion to kinematic viscosity. When operating on a temperature sensitive gainblock this scalar can be used to compensate for the effects of variable ambient temperature. The orifice formed by the space between a jet and a solid wall is a pressure sensitive resistance that is used as the controlling element in a gain changer and an automatically null-balanced Wheatstone bridge. In a novel use of a laminar proportional amplifier (LPA), the nonlinear saturation characteristic is used to linearize inversely nonlinear sensor and circuit outputs. Finally a set-point pressure sensor, that is a highly asymmetric LPA, is described that develops a high differential output pressure as a function of power jet pressure which can be some set-point pressure. By using this device as a pressure sensor, an ultra-quiet, high suppression performance pressure regulator has been built and demonstrated.

scholarly journals A New Automatic Foot Arch Index Measurement Method Based on a Flexible Membrane Pressure Sensor

Sensors ◽  
2020 ◽  
Vol 20 (10) ◽  
pp. 2892
Author(s):  
Tao Zheng ◽  
Zhiyong Yu ◽  
Jin Wang ◽  
Guodong Lu
Keyword(s):  
Pressure Sensor ◽  
Measurement Method ◽  
Flat Foot ◽  
Flexible Membrane ◽  
Index Measurement ◽  
Pressure Area ◽  
Foot Arch ◽  
Low Efficiency ◽  
Arch Index ◽  
Element Association

The foot arch index is an important index to evaluate the health of human feet and the biomechanics line, aiming at addressing the shortcomings of the low efficiency and slow speed of manual foot arch index measurement; in this work, an automatic foot arch index measurement method based on a flexible membrane pressure sensor was proposed. The distribution of plantar pressure data was obtained from the flexible membrane pressure sensor and converted into a digital image. The 8-neighborhood correlation pixel method was proposed to remove the interference of isolated noise points. In order to remove the toes’ data without affecting the foot sole data, the row element association algorithm was proposed. The front and back endpoints of the foot were automatically located to obtain the foot length, and the foot arch index was also automatically obtained based on the foot arch pressure area. Whether it was a high arch foot, flat foot or normal foot, the method proposed in this paper could accurately and quickly distinguish them. The prototype was developed, and its feasibility and validity were verified by a series of tests.

Self-Referenced Residual Pressure Measurement Method for Fiber-Optic Pressure Sensor Chip

2014 ◽  
Vol 26 (10) ◽  
pp. 957-960 ◽  
Author(s):  
Jinde Yin ◽  
Tiegen Liu ◽  
Junfeng Jiang ◽  
Kun Liu ◽  
Shuang Wang ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
Pressure Measurement ◽  
Measurement Method ◽  
Fiber Optic ◽  
Sensor Chip ◽  
Residual Pressure

Research of Grain Moisture Measurement Method Based on Pressure Sensor

2012 ◽  
Vol 472-475 ◽  
pp. 1518-1523
Author(s):  
Jun Xing Li ◽  
Ya Qiu Zhang ◽  
Wen Fu Wu ◽  
Zhe Liu ◽  
Feng Han
Keyword(s):  
Programming Language ◽  
Pressure Sensor ◽  
Experimental Analysis ◽  
Measurement Method ◽  
Hardware Design ◽  
Visual Programming ◽  
Software System ◽  
Moisture Measurement ◽  
Grain Moisture ◽  
Visual Programming Language

This paper presents a grain moisture measurement method based on storage pressure. The system mainly includes the structure and circuit hardware design of a test sensor. The software system using visual programming language, combined with MATLAB, established a grain moisture model, to achieve the measurement on grain moisture. Finally, the experimental analysis was made on the system. The results show that this moisture measurement method is practical and stable.

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