Multi-phase sensor
A sensor and sensor chip technology, applied in the field of sensors, can solve problems such as slow measurement speed, poor selectivity, and low sensitivity, and achieve the effects of long service life, high sensitivity, and high measurement accuracy
Inactive Publication Date: 2013-09-25
张伟
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Problems solved by technology
[0003] Single-phase sensors are commonly used in the market, but most of them have many shortcomings such as low sensitivity, poor selectivity, interference from other gases, large volume, and slow measurement speed.
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[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific implementation methods and accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but not to limit the present invention.
[0016] The multiphase sensor of the present invention comprises a housing 1 , a base 2 , an A pin 3 , a B pin 4 , a C pin 5 , a D pin 6 , and a sensor chip 11 . The shell 1 is buckled on the base 2 to protect the sensor chip; there are four holes on the base 2 to fix the four pins respectively; A pin 3, B pin 4, C pin The pin 5 and the D pin 6 are respectively connected to the sensor chip 11 through the holes on the base.
[0017] The sensor chip 11 includes a heating substrate layer 7 , an A sensitive layer 8 , a B sensitive layer 9 , and a C sensitive layer 10 . The he...
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A multi-phase sensor comprises a housing, a base, four pins and a sensor chip. The four pins penetrate through holes on the base to connect to the sensor chip individually. A resistor RH is arranged on a heating substrate layer and electrically connected between a first pin and a fourth pin. A resistor RS1 is arranged on a first sensitive layer and electrically connected between a third pin and the fourth pin. A resistor RS2 is arranged on a second sensitive layer and electrically connected between a second pin and the third pin. A resistor RS3 is arranged on a third sensitive layer and electrically connected between the first pin and the second pin. The multi-phase sensor provided by the invention is mainly used for gas detection and particularly for the fields such as grain growth analysis, food aroma analysis, environment quality monitoring, hazardous gas warning, underground toxic gas monitoring, and in-car and indoor air quality monitoring. The multi-phase sensor is characterized by high sensitivity, good selectivity, small size, fast measuring speed, high measuring precision, and is suitable for wide application.
Description
technical field [0001] The invention relates to a sensor, in particular to a multi-phase sensor with high sensitivity, good selectivity, small volume, fast measurement speed, high measurement accuracy and long service life. Background technique [0002] A sensor is a device that can perceive external information and convert this information into a usable signal according to certain rules; simply speaking, a sensor is a device that converts external signals into electrical signals. The multi-phase sensor can accurately measure different gases and gas mixtures from a few ppb to Vol%. [0003] Single-phase sensors are commonly used in the market, but most of them have many shortcomings such as low sensitivity, poor selectivity, interference by other gases, large volume, and slow measurement speed. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a multi-phase sensor. [0005] In order to solve the above-mentioned t...
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IPC IPC(8): G01N33/00
Inventor 张伟
Owner 张伟