Pressure sensor for multi-way valve accelerated life test

An accelerated life test and pressure sensor technology, applied in the field of sensors, can solve the problem of avoiding moisture in voltage materials, and achieve the effect of improving moisture resistance and service life.

Pending Publication Date: 2020-12-29
HUST WUXI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the above-mentioned deficiencies in the background technology, to provide a multi-way valve accelerated life test pressure sensor, to solve the problem that part of the voltage

Method used

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  • Pressure sensor for multi-way valve accelerated life test
  • Pressure sensor for multi-way valve accelerated life test
  • Pressure sensor for multi-way valve accelerated life test

Examples

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Example Embodiment

[0020]The specific embodiments of the present invention will be further described below in conjunction with the drawings.

[0021]Figure 1-5In the middle, including 1. housing; 2. base; 3. mass block; 4. support block; 5. piezoelectric ceramic wafer; 6. electrode interlayer; 7. dehumidification box; 8. lower connection block; 9. upper connection block; 10. Upper limit slot; 11. Upper connecting edge; 12. Desiccant storage box; 13. Lower connecting edge; 14. Upper limit ring; 15. Lower limit slot; 16. First bump; 17, Second bump ; 18. Lower limit ring; 19, dehumidification hole; 20, base connection seat; 21, limit edge; 22, gasket; 23, seal limit edge, etc.

[0022]The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodi...

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Abstract

The invention discloses a pressure sensor for a multi-way valve accelerated life test. The pressure sensor comprises a base, wherein a supporting block is arranged in the base; a wafer is arranged above the supporting block; an electrode interlayer is arranged above the wafer; the upper end of the base is sleeved with a shell; a mass block is arranged above the electrode interlayer; the supportingblock comprises a lower connecting block and an upper connecting block; a dehumidification box is arranged between the lower connecting block and the upper connecting block; a base connecting base isarranged outside the upper end of the base; and sealing pads are arranged on the inner sides of the upper end of the base connecting base and the lower end of the shell. The dehumidification box is arranged to contain a drying agent to absorb moisture in the sensor, and therefore the service life of the pressure sensor is effectively prolonged; and meanwhile, the dehumidification box and the supporting block are in limiting connection through an upper limiting ring and a lower limiting ring, and therefore the dehumidification box can be replaced.

Description

Technical field[0001]The invention belongs to the technical field of sensors, and more specifically, relates to a pressure sensor for accelerated life test of a multi-way valve.Background technique[0002]The accelerated life test of the multi-way valve is to test the service life of the multi-way valve through the test. The accelerated life test refers to the use of statistical models related to the physical failure law on the basis of reasonable engineering and statistical assumptions. The reliability information obtained in the accelerated environment is converted to obtain a reproducible numerical estimation of the reliability characteristics of the specimen under the rated stress level. The accelerated life test adopts accelerated stress to carry out the life test of the specimen, thereby shortening the test time, improving the test efficiency, and reducing the test cost. Its research makes it possible to evaluate the reliability of high-reliability and long-life products. Accord...

Claims

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Application Information

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IPC IPC(8): G01L1/16G01L9/08G01L19/06G01M13/003
CPCG01L1/16G01L9/08G01L19/0654G01M13/003
Inventor 牛壮杜广杰史有程曹文斌
Owner HUST WUXI RES INST
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