CN202268070U - Novel isolated pressure transmitter - Google Patents
Novel isolated pressure transmitter Download PDFInfo
- Publication number
- CN202268070U CN202268070U CN2011204067708U CN201120406770U CN202268070U CN 202268070 U CN202268070 U CN 202268070U CN 2011204067708 U CN2011204067708 U CN 2011204067708U CN 201120406770 U CN201120406770 U CN 201120406770U CN 202268070 U CN202268070 U CN 202268070U
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- output module
- sensor
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- pressure transmitter
- novel isolated
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Abstract
The utility model relates to a measuring electronic technology, in particular to a novel isolated pressure transmitter, which comprises a circuit board and an integrated circuit bonded on the circuit board in a sealing manner. The novel isolated pressure transmitter is characterized in that: the integrated circuit comprises a transmission output module, wherein the transmission output module is respectively connected with a sensor, a signal output module and a filtering protection circuit, and an isolation module is respectively arranged between the transmission output module and the sensor as well as between the transmission output module and the signal output module. According to the utility model, by placing the isolation modules for isolating millivolt voltage signals between the sensor and the amplified circuit board and electric signals output through transmission, signals are more stable and reliable.
Description
Technical field
The utility model relates to the measurement electronic technology, particularly relates 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 utility model 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 utility model 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.
The utility model has the advantages that:
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 be the utility model theory diagram.
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 |
|---|---|---|---|
| CN2011204067708U CN202268070U (en) | 2011-10-24 | 2011-10-24 | Novel isolated pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204067708U CN202268070U (en) | 2011-10-24 | 2011-10-24 | Novel isolated pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202268070U true CN202268070U (en) | 2012-06-06 |
Family
ID=46158855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204067708U Expired - Fee Related CN202268070U (en) | 2011-10-24 | 2011-10-24 | Novel isolated pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202268070U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102446406A (en) * | 2011-10-24 | 2012-05-09 | 山东佰测仪表有限公司 | Novel separated pressure transmitter |
| CN102778327A (en) * | 2012-07-05 | 2012-11-14 | 西安交通大学 | High-performance intelligent sensor digital transmitting system |
| CN103576013A (en) * | 2012-07-24 | 2014-02-12 | 中国科学院大连化学物理研究所 | Measurement and control system capable of isolating strong impulse interference |
| CN103852206A (en) * | 2012-12-05 | 2014-06-11 | 上海朝辉压力仪器有限公司 | Piezoelectric sensor and transmitter applying same |
-
2011
- 2011-10-24 CN CN2011204067708U patent/CN202268070U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102446406A (en) * | 2011-10-24 | 2012-05-09 | 山东佰测仪表有限公司 | Novel separated pressure transmitter |
| CN102778327A (en) * | 2012-07-05 | 2012-11-14 | 西安交通大学 | High-performance intelligent sensor digital transmitting system |
| CN103576013A (en) * | 2012-07-24 | 2014-02-12 | 中国科学院大连化学物理研究所 | Measurement and control system capable of isolating strong impulse interference |
| CN103576013B (en) * | 2012-07-24 | 2017-03-15 | 中国科学院大连化学物理研究所 | A kind of TT＆C system that can isolate high power pulse interference |
| CN103852206A (en) * | 2012-12-05 | 2014-06-11 | 上海朝辉压力仪器有限公司 | Piezoelectric sensor and transmitter applying same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20151024 |
|
| EXPY | Termination of patent right or utility model |