CN102446406A - Novel separated pressure transmitter - Google Patents
Novel separated pressure transmitter Download PDFInfo
- Publication number
- CN102446406A CN102446406A CN2011103247036A CN201110324703A CN102446406A CN 102446406 A CN102446406 A CN 102446406A CN 2011103247036 A CN2011103247036 A CN 2011103247036A CN 201110324703 A CN201110324703 A CN 201110324703A CN 102446406 A CN102446406 A CN 102446406A
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- CN
- China
- Prior art keywords
- output module
- sensor
- signal
- pressure transmitter
- send
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000002955 isolation Methods 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to a measuring electronic technology, and especially relates to a novel separated pressure transmitter comprising a circuit board and an integrated circuit sealed on the circuit board. The novel separated pressure transmitter is characterized in that: the integrated circuit comprises a transmission output module which is respectively connected to a sensor, a signal output module and a filtering protection circuit; and separation modules are respectively arranged between the transmission output module and the sensor, and between the transmission output module and the signal output module. According to the invention, with the separation modules, millivolt voltage signals between the sensor and an amplifying circuit board, and transmitted and outputted current signals are respectively separated, such that the signals are more stable and reliable.
Description
Technical field
The present invention relates to measure electronic technology, particularly relate to a kind of novel isolated pressure transmitter.
Background technology
In the industry spot process, realization monitoring and control need be used various instrument, and the signal between them transmits existing faint small-signal to millivolt, milliampere; Thousands of volts are also arranged, the large-signal of hundreds of peaces.So between each signal, phase mutual interference easily.In addition, in the industry spot environment, some main equipments also can cause bigger interference to the transmission signals at scene like frequency converter, motor, thereby cause distorted signals, inefficacy when moving, thereby can cause system unstable, even can't operate as normal.At this moment just need to adopt the mode of Signal Spacing, signal is protected.
Summary of the invention
The present invention provides a kind of novel isolated pressure transmitter, through placing isolation module, with the millivolt voltage signal between sensor and the amplifying circuit board, and becomes and send the current signal of output to isolate respectively, thereby make signal stable more, reliable.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of novel isolated pressure transmitter; Comprise wiring board; Be sealed with integrated circuit on the wiring board, it is characterized in that, said integrated circuit comprises becoming and send output module; Said change send output module to be connected with sensor, signal output module and filter protective circuit respectively, send between output module and sensor, the signal output module in change isolation module is set respectively.
On the technique scheme basis, the sensor that is adopted adopts diffusion silicon pressure sensor.
Transmitter adopts 24V constant pressure source power supply mode, and under temperature variations, it is linear with the gaging pressure size that resistance changes size.
Isolation module is mainly isolated input/output signal, is that signal receives the degree of external interference less to minimum.It mainly is that sensor is received the millivolt signal of exporting behind the pressure that output module is sent in change, uses oversampling circuit, converts 4～20mA industrial standard current signal into; Filtering, holding circuit part then are aspect circuit, to realize filtering and isolation; Extraneous interference can be avoided to a certain extent, simultaneously, protective effect can also be played circuit; When having big electric current or big voltage to insert in the external world, can prevent to burn out the critical piece of wiring board.
Advantage of the present invention is:
1) isolation performance is superior, can disturb to external world preferably and isolate, and guarantees the pure, undistorted of input/output signal.
2) change send output accuracy high, and this novel isolated pressure transmitter adopts the sensor and the wiring board of performance better performances, and can guarantee to export signal has higher precision, and temperature characterisitic is preferably arranged.
3) can realize exporting the conversion of signal, can be other forms of industry standard signal with 4～20mA conversion of signals through isolation module, and it is wider to make it the scope of application.
4) adopt the flame proof design on this novel isolating transmitter external structure, be applicable to industries such as combustion gas more.
Description of drawings
Fig. 1 is a theory diagram of the present invention.
Embodiment
As shown in Figure 2; A kind of novel isolated pressure transmitter; Comprise wiring board, be sealed with integrated circuit on the wiring board, said integrated circuit comprises becoming and send output module; Said change send output module to be connected with sensor, signal output module and filter protective circuit respectively, send between output module and sensor, the signal output module in change isolation module is set respectively.
Sensor receives after the ambient pressure, and output millivolt signal, this signal carry out the first time and isolate through the isolation module on the wiring board.Through the signal of isolation module, get into to become and send output, can be with the millivolt signal of sensor output; Become and send the 4～20mA that is output as industrial standard current signal, this current signal is through second isolation module; Carry out the second time and isolate, the signal through this isolation module can be the current signal of 4～20mA, also can carry out the conversion of signal through isolation module; Export other standard signals,, make this isolating transmitter can adapt to more conditions like 0～5V, 1～5V voltage signal or the like.Become and send filtering, holding circuit in the output circuit can the clutter in the power supply be filtered, make the more stable work of circuit, can protect circuit simultaneously.
Claims (2)
1. novel isolated pressure transmitter; Comprise wiring board; Be sealed with integrated circuit on the wiring board, it is characterized in that, said integrated circuit comprises becoming and send output module; Said change send output module to be connected with sensor, signal output module and filter protective circuit respectively, send between output module and sensor, the signal output module in change isolation module is set respectively.
2. novel isolated pressure transmitter according to claim 1 is characterized in that, said sensor adopts diffusion silicon pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103247036A CN102446406A (en) | 2011-10-24 | 2011-10-24 | Novel separated pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103247036A CN102446406A (en) | 2011-10-24 | 2011-10-24 | Novel separated pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102446406A true CN102446406A (en) | 2012-05-09 |
Family
ID=46008879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103247036A Pending CN102446406A (en) | 2011-10-24 | 2011-10-24 | Novel separated pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102446406A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778327A (en) * | 2012-07-05 | 2012-11-14 | 西安交通大学 | High-performance intelligent sensor digital transmitting system |
| CN105699004A (en) * | 2016-04-26 | 2016-06-22 | 成都众山科技有限公司 | Wireless pressure transmitter based on wifi |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447911A (en) * | 2000-06-30 | 2003-10-08 | Vega格里沙贝两合公司 | Pressure transmitter |
| CN2836070Y (en) * | 2005-09-30 | 2006-11-08 | 北京华控技术有限责任公司 | Intelligent EPA pressure transmitter |
| CN201003998Y (en) * | 2007-02-02 | 2008-01-09 | 上海罗斯蒙特仪表股份有限公司 | Integrated intelligent tension transformer |
| DE202008013957U1 (en) * | 2008-09-29 | 2009-01-08 | Tst Electronics Gmbh | Device for recovering fuel |
| CN202268070U (en) * | 2011-10-24 | 2012-06-06 | 山东佰测仪表有限公司 | Novel isolated pressure transmitter |
-
2011
- 2011-10-24 CN CN2011103247036A patent/CN102446406A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447911A (en) * | 2000-06-30 | 2003-10-08 | Vega格里沙贝两合公司 | Pressure transmitter |
| CN2836070Y (en) * | 2005-09-30 | 2006-11-08 | 北京华控技术有限责任公司 | Intelligent EPA pressure transmitter |
| CN201003998Y (en) * | 2007-02-02 | 2008-01-09 | 上海罗斯蒙特仪表股份有限公司 | Integrated intelligent tension transformer |
| DE202008013957U1 (en) * | 2008-09-29 | 2009-01-08 | Tst Electronics Gmbh | Device for recovering fuel |
| CN202268070U (en) * | 2011-10-24 | 2012-06-06 | 山东佰测仪表有限公司 | Novel isolated pressure transmitter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778327A (en) * | 2012-07-05 | 2012-11-14 | 西安交通大学 | High-performance intelligent sensor digital transmitting system |
| CN105699004A (en) * | 2016-04-26 | 2016-06-22 | 成都众山科技有限公司 | Wireless pressure transmitter based on wifi |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120509 |
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| RJ01 | Rejection of invention patent application after publication |