CN205209666U - Inductance type pressure sensor - Google Patents

Inductance type pressure sensor Download PDF

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Publication number
CN205209666U
CN205209666U CN201521040685.9U CN201521040685U CN205209666U CN 205209666 U CN205209666 U CN 205209666U CN 201521040685 U CN201521040685 U CN 201521040685U CN 205209666 U CN205209666 U CN 205209666U
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China
Prior art keywords
module
inductance
oscillatory circuit
output terminal
output
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CN201521040685.9U
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Chinese (zh)
Inventor
蒋国雄
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Guangdong Tiangong Automation Technology Co., Ltd.
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Jiangmen City Tian Gong Automation Science And Technology Ltd
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Priority to CN201521040685.9U priority Critical patent/CN205209666U/en
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Abstract

The utility model discloses an inductance type pressure sensor, including inductance module, inductance module comprises exerted metal strain gauge and sealed LC oscillatory circuit module, and this LC oscillatory circuit module's output is connected with inductance digital conversion module, the output of inductance digital conversion module is connected with little control module, and control module's output is connected with the digital output interface a little. This kind of inductance type pressure sensor comes the measuring pressure through the inductance module who comprises exerted metal strain gauge and sealed LC oscillatory circuit module, can realize measuring with measurand material non -contact, effectively avoids the influence of ambient temperature, dirt, dust, guarantee measurement accuracy, and it is more stable to work, can carry out short distance, high speed, contactless sensing, especially adapted open air or harsh operational environment to position, rotation or motion.

Description

A kind of inductance pressure transducer
Technical field
The utility model relates to a kind of sensor, particularly a kind of pressure transducer.
Background technology
Pressure transducer is a kind of sensor the most conventional in commercial production, it is widely used in various industrial automatic control environment, relates to numerous industries such as water conservancy and hydropower, railway traffic, intelligent building, production automatic control, Aero-Space, military project, petrochemical industry, oil well, electric power, boats and ships, lathe, pipeline.Wherein, piezoresistive pressure sensor is one of pressure transducer commonly used the most.Piezoresistive pressure sensor comprises a metal resistance strain gauge, and metal resistance strain gauge is a kind of Sensitive Apparatus strain variation on measured piece being converted into a kind of electric signal.Metal resistance strain gauge by special bonding agent close adhesion produce mechanics strain matrix on, when the stressed generation STRESS VARIATION of matrix, metal resistance strain gauge also produces deformation together, and the resistance of foil gauge is changed, thus makes to be added in ohmically voltage and change.The change in resistance that this foil gauge produces when stressed is usually less, generally by this foil gauge composition strain bridge, and is amplified by follow-up instrument amplifier, then is transferred to treatment circuit (normally A/D conversion and CPU) display or topworks.But this piezoresistive pressure sensor exists some shortcomings, metal resistance strain gauge makes moist and insulation resistance can be made to decline in wet environment, causes measurement sensistivity and precision to reduce, and even electric bridge can not normal equilibrium, cannot devote oneself to work.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of pressure transducer, can disturb from working environment, ensures measuring accuracy, works more stable.
In order to solve the problems of the technologies described above, a kind of inductance pressure transducer of the present utility model, comprise inductor module, described inductor module is made up of the LC oscillatory circuit module of the metal strain plate exposed and sealing, the output terminal of this LC oscillatory circuit module is connected with inductance data-converting block, the output terminal of described inductance data-converting block is connected with micro-control module, and the output terminal of this micro-control module is connected with digital output interface.
As the improvement of technique scheme, described inductor module is in parallel several, the driver module that several are connected with described inductor module is respectively provided with in described inductance data-converting block, the output terminal of described driver module is connected with data selecting module, and the output terminal of this data selecting module is connected with described micro-control module.
The beneficial effects of the utility model are: this inductance pressure transducer measures pressure by the inductor module be made up of the LC oscillatory circuit module of the metal strain plate exposed and sealing, can realize and substances to be measured non-contact measurement, effectively avoid the impact of ambient humidity, dirt, dust, ensure measuring accuracy, work more stable, can to position, rotation or motion carry out short distance, at a high speed, contactless sensing, be very applicable to outdoor or harsh working environment.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Embodiment
With reference to Fig. 1, a kind of inductance pressure transducer of the present utility model, comprise inductor module 1, described inductor module 1 is made up of the LC oscillatory circuit module 12 of the metal strain plate 11 exposed and sealing, the output terminal of this LC oscillatory circuit module 12 is connected with inductance data-converting block 2, the output terminal of described inductance data-converting block 2 is connected with micro-control module 3, and the output terminal of this micro-control module 3 is connected with digital output interface 4.This inductance pressure transducer measures pressure by the inductor module be made up of the LC oscillatory circuit module of the metal strain plate exposed and sealing, can realize and substances to be measured non-contact measurement, effectively avoid the impact of ambient humidity, dirt, dust, ensure measuring accuracy, work more stable, can to position, rotation or motion carry out short distance, at a high speed, contactless sensing, be very applicable to outdoor or harsh working environment.
Wherein, described inductor module 1 is in parallel several, describedly state in inductance data-converting block 2 driver module 21 being provided with several and being connected with described inductor module 1 respectively, the output terminal of described driver module 21 is connected with data selecting module 22, the output terminal of this data selecting module 22 is connected with described micro-control module 3, can measure multiple target simultaneously and select corresponding pressure signal to export according to the setting of micro-control module, more easily meeting the needs of Automated condtrol.
The foregoing is only preferred embodiments of the present utility model, as long as the technical scheme realizing the utility model object with basic same approach all belongs within protection domain of the present utility model.

Claims (2)

1. an inductance pressure transducer, it is characterized in that: comprise inductor module (1), described inductor module (1) is made up of the LC oscillatory circuit module (12) of the metal strain plate exposed (11) and sealing, the output terminal of this LC oscillatory circuit module (12) is connected with inductance data-converting block (2), the output terminal of described inductance data-converting block (2) is connected with micro-control module (3), and the output terminal of this micro-control module (3) is connected with digital output interface (4).
2. inductance pressure transducer according to claim 1, it is characterized in that: described inductor module (1) is in parallel several, the driver module (21) that several are connected with described inductor module (1) is respectively provided with in described inductance data-converting block (2), the output terminal of described driver module (21) is connected with data selecting module (22), and the output terminal of this data selecting module (22) is connected with described micro-control module (3).
CN201521040685.9U 2015-12-14 2015-12-14 Inductance type pressure sensor Active CN205209666U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521040685.9U CN205209666U (en) 2015-12-14 2015-12-14 Inductance type pressure sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521040685.9U CN205209666U (en) 2015-12-14 2015-12-14 Inductance type pressure sensor

Publications (1)

Publication Number Publication Date
CN205209666U true CN205209666U (en) 2016-05-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201521040685.9U Active CN205209666U (en) 2015-12-14 2015-12-14 Inductance type pressure sensor

Country Status (1)

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CN (1) CN205209666U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109497766A (en) * 2018-12-29 2019-03-22 浙江梦神家居股份有限公司 It is a kind of monitor conventional sleep data mattress and its control methods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109497766A (en) * 2018-12-29 2019-03-22 浙江梦神家居股份有限公司 It is a kind of monitor conventional sleep data mattress and its control methods

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Legal Events

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C14 Grant of patent or utility model
GR01 Patent grant
CP03 Change of name, title or address

Address after: 529100 Baoyuan Road, Huicheng, Xinhui District, Jiangmen City, Guangdong Province (Workshop 6)

Patentee after: Guangdong Tiangong Automation Technology Co., Ltd.

Address before: 529100 E04-3, East Industrial Development Zone of Jinguzhou, Huicheng, Xinhui District, Jiangmen City, Guangdong Province

Patentee before: Jiangmen city Tian Gong automation Science and Technology Ltd.

CP03 Change of name, title or address