CN203732198U - Pressure transmitter - Google Patents
Pressure transmitter Download PDFInfo
- Publication number
- CN203732198U CN203732198U CN201320849885.3U CN201320849885U CN203732198U CN 203732198 U CN203732198 U CN 203732198U CN 201320849885 U CN201320849885 U CN 201320849885U CN 203732198 U CN203732198 U CN 203732198U
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- Prior art keywords
- signal
- master controller
- pressure
- pressure unit
- unit according
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- 238000012545 processing Methods 0.000 claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000003321 amplification Effects 0.000 claims description 10
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Abstract
The utility model discloses a pressure transmitter based on a PROFIBUS-PA protocol. An inner side of a protocol chip is provided with the PROFIBUS-PA protocol in an integrated manner. Linear compensation of signals transmitted by a pressure sensor can be carried out by a main controller according to the PROFIBUS-PA protocol, and the compensated signals can be sent to a storage device for the storage. The utility model is advantageous in that the accurate and stable processing of the information of the pressure sensor can be realized; the accuracy and the stability of the pressure transmitter can be improved; and in addition, the transmission and the processing of the information can be realized by the PROFIBUS-PA protocol, and the reliability of the system can be improved.
Description
Technical field
The utility model relates to pressure data collection and transmission field, especially relates to a kind of pressure unit.
Background technology
Pressure unit is the pressure transducer that is output as standard signal, the physical pressure such as gas, the liquid parameter that load cell is experienced changes the electric signal of standard into, and to supply with, the secondary instruments such as indicator alarm, registering instrument, regulator are measured, instruction and procedure regulation.
And at present, the pressure unit generally using in industrial system, its precision and stability need to improve.
Utility model content
In view of this, the utility model provides a kind of pressure unit, to solve the problem that in prior art, pressure unit precision and stability have much room for improvement.Its concrete scheme is as follows:
A kind of pressure unit, application PROFIBUS-PA agreement, comprising:
Inside is integrated with PROFIBUS-PA agreement, bus signals is carried out to the protocol chip of modulation /demodulation;
Gather the pressure transducer of pressure signal;
Be connected with described pressure transducer, the signal processing circuit that the pressure signal of described pressure transducer is processed;
Be connected respectively with described signal processing circuit and protocol chip, the master controller that the signal described signal processing circuit being sent according to PROFIBUS-PA agreement carries out linear compensation and sends;
Be connected with described master controller, the storer that the signal sending according to described master controller carries out information storage.
Further, also comprise:
Be connected with described master controller, for described master controller and pressure transducer, signal processing circuit provide the power module of power supply.
Further, also comprise:
Be connected with described master controller, the display screen that the signal sending according to described master controller carries out information demonstration.
Further, described signal processing circuit comprises:
Be connected with described pressure transducer, the pressure signal that described pressure transducer is sent carries out amplifying signal amplifying circuit;
Be connected respectively with described signal amplification circuit and master controller, the simulating signal that described signal amplification circuit is sent converts the analog to digital conversion circuit of digital signal to.
Further, also comprise:
Being connected with analog-digital conversion circuit as described, is the afford redress temperature sensor of temperature of described master controller.
Further, also comprise:
Be connected with described power module, for described power module provides the power protecting circuit of circuit protection.
Further, described power module is specially: SIM1-2.
Further, described protocol chip is specially: SCP4-2 chip.
Further, described storer is specially: EEPROM (Electrically Erasable Programmable Read Only Memo) EEPROM.
Further, described master controller is specially: M16C type processor.
The beneficial effect that above-mentioned pressure unit brings is: in the utility model, be integrated with PROFIBUS-PA agreement by protocol chip inside, and signal pressure transducer being transmitted by master controller carries out linear compensation according to PROFIBUS-PA agreement, and the signal after compensation is sent to storer and stores.Realize the accurate, stable of pressure transducer information processed, the degree of accuracy of the disclosed pressure unit of this programme and stability are got a promotion.In addition, realize the transmission process of information by PROFIBUS-PA agreement, improved the reliability of system.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the disclosed a kind of pressure unit of the utility model;
Fig. 2 is the structural representation of the disclosed a kind of pressure unit of the utility model;
Fig. 3 is the structural representation of the disclosed a kind of signal processing circuit of the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
The disclosed a kind of pressure unit of the utility model, application PROFIBUS-PA agreement, its structural representation as shown in Figure 1, comprising:
Protocol chip 11, pressure transducer 12, signal processing circuit 13, master controller 14, storer 15.
Protocol chip 11 inside are integrated with PROFIBUS-PA agreement, and PROFIBUS-PA bus signals is carried out to modulation /demodulation.
Concrete, protocol chip 11 can be: SCP4-2 chip.
Signal processing circuit 13 is connected with pressure transducer 12, and the pressure signal of pressure transducer 12 is processed, and after processing, sends.
Master controller 14 is connected respectively with signal processing circuit 13 and protocol chip 11, and signal signal processing circuit 13 being sent according to the PROFIBUS-PA agreement of protocol chip 11 carries out linear compensation and the signal after compensation is sent.
Wherein, master controller 14 can be specially: M16C type processor.
More specifically, Ke Yiwei: M30626FHPGP processor.
Storer 15 is connected with master controller 14, and the signal sending according to master controller 14 carries out information storage.
Further, the disclosed storer 15 of the present embodiment can be specially 2, is used for storing each functional parameter in pressure unit and each data of measurement.
Preferably, the disclosed storer 15 of the present embodiment is specifically as follows: EEPROM(Electrically Erasable Programmable Read-Only Memory, EEPROM (Electrically Erasable Programmable Read Only Memo)).
The disclosed pressure unit of the present embodiment, be integrated with PROFIBUS-PA agreement by protocol chip inside, and signal pressure transducer being transmitted by master controller carries out linear compensation according to PROFIBUS-PA agreement, and the signal after compensation is sent to storer and stores.Realize the accurate, stable of pressure transducer information processed, the degree of accuracy of the disclosed pressure unit of this programme and stability are got a promotion.In addition, realize the transmission process of information by PROFIBUS-PA agreement, improved the reliability of system.
Preferably, the disclosed pressure unit of the present embodiment, also comprises: display screen 16.
Display screen 16 is connected with master controller 14, and the signal sending according to master controller 14 carries out information demonstration.
The information that display screen 16 shows specifically can comprise: measurement result, failure message, working method.
Further, display screen 16 is specifically as follows: LCD display.
The present embodiment discloses a kind of pressure unit, and its concrete structure schematic diagram as shown in Figure 2, comprising:
Protocol chip 21, pressure transducer 22, signal processing circuit 23, master controller 24, storer 25, power module 26.
Except the structure identical with a upper embodiment, the present embodiment has also increased power module 26.
Power module 26 is connected with master controller 24, for master controller 24 and pressure transducer 22, signal processing circuit 23 provide power supply.
Wherein, power module 26 is specifically as follows SIM1-2, and pressure transducer 22 and collection voltage thereof are produced by SIM1-2 and linear power supply, and the power supply of communication and master controller is directly produced by SIM1-2.
SIM1-2 provides selectable, stable electric system, wherein, SIM1-2 needs the crystal oscillator of an external 2MHz to carry out starting of oscillation, can produce stable 3.3V DC voltage, for master controller, protocol chip power supply, in addition, SIM1-2 can also produce another group DC voltage, for 3.4V, be pressure transducer, signal processing circuit power supply.
Further, in the disclosed pressure unit of the present embodiment, can also comprise: be connected with power module 26, for power module provides the power protecting circuit of circuit protection.
The disclosed pressure unit of the present embodiment, be integrated with PROFIBUS-PA agreement by protocol chip inside, and signal pressure transducer being transmitted by master controller carries out linear compensation according to PROFIBUS-PA agreement, and the signal after compensation is sent to storer and stores.Realize the accurate, stable of pressure transducer information processed, the degree of accuracy of the disclosed pressure unit of this programme and stability are got a promotion.In addition, realize the transmission process of information by PROFIBUS-PA agreement, improved the reliability of system.In addition, in the present embodiment, increase power module, realize the situation that is respectively master controller and pressure transducer, signal processing circuit power supply, avoided each module to receive not meeting the voltage of its output and can not get the situation of the result needing, improved reliability, the stability of system.
The present embodiment discloses a kind of signal processing circuit, and its structural representation as shown in Figure 3, comprising:
Signal amplification circuit 31, analog to digital conversion circuit 32.
Signal amplification circuit 31 is connected with pressure transducer, and the pressure signal that pressure transducer is sent amplifies processing, and wherein, the pressure signal that pressure transducer sends is simulating signal, and this pressure signal is millivolt level signal.
Analog to digital conversion circuit 32 is connected respectively with signal amplification circuit 31 and master controller, and the simulating signal that signal amplification circuit 31 is sent converts digital signal to, and is sent to master controller.
Wherein, analog to digital conversion circuit 32 is 24 analog to digital converters.
The disclosed signal processing circuit of the present embodiment, by signal amplification circuit, analog to digital conversion circuit, realizes amplification and the analog-to-digital conversion process of the signal to pressure transducer output, makes the signal of pressure transducer output realize linear compensation at master controller place.
Further, the pressure unit of the disclosed signal processing circuit of application the present embodiment, can also comprise: temperature sensor.
Temperature sensor is connected with analog to digital conversion circuit, and signal temperature sensor being sent by analog to digital conversion circuit carries out after analog to digital conversion, is the master controller temperature that affords redress.
The disclosed pressure unit of the present embodiment, by co-ordination between each module, and carries out temperature compensation in conjunction with the temperature of pressure transducer, has improved temperature stability, has realized high-precision pressure measurement.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a pressure unit, is characterized in that, application PROFIBUS-PA agreement, comprising:
Inside is integrated with PROFIBUS-PA agreement, bus signals is carried out to the protocol chip of modulation /demodulation;
Gather the pressure transducer of pressure signal;
Be connected with described pressure transducer, the signal processing circuit that the pressure signal of described pressure transducer is processed;
Be connected respectively with described signal processing circuit and protocol chip, the master controller that the signal described signal processing circuit being sent according to PROFIBUS-PA agreement carries out linear compensation and sends;
Be connected with described master controller, the storer that the signal sending according to described master controller carries out information storage.
2. pressure unit according to claim 1, is characterized in that, also comprises:
Be connected with described master controller, for described master controller and pressure transducer, signal processing circuit provide the power module of power supply.
3. pressure unit according to claim 1, is characterized in that, also comprises:
Be connected with described master controller, the display screen that the signal sending according to described master controller carries out information demonstration.
4. pressure unit according to claim 1, is characterized in that, described signal processing circuit comprises:
Be connected with described pressure transducer, the pressure signal that described pressure transducer is sent carries out amplifying signal amplifying circuit;
Be connected respectively with described signal amplification circuit and master controller, the simulating signal that described signal amplification circuit is sent converts the analog to digital conversion circuit of digital signal to.
5. pressure unit according to claim 4, is characterized in that, also comprises:
Being connected with analog-digital conversion circuit as described, is the afford redress temperature sensor of temperature of described master controller.
6. pressure unit according to claim 2, is characterized in that, also comprises:
Be connected with described power module, for described power module provides the power protecting circuit of circuit protection.
7. pressure unit according to claim 2, is characterized in that, described power module is specially: SIM1-2.
8. pressure unit according to claim 1, is characterized in that, described protocol chip is specially: SCP4-2 chip.
9. pressure unit according to claim 1, is characterized in that, described storer is specially: EEPROM (Electrically Erasable Programmable Read Only Memo) EEPROM.
10. pressure unit according to claim 1, is characterized in that, described master controller is specially: M16C type processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320849885.3U CN203732198U (en) | 2013-12-20 | 2013-12-20 | Pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320849885.3U CN203732198U (en) | 2013-12-20 | 2013-12-20 | Pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203732198U true CN203732198U (en) | 2014-07-23 |
Family
ID=51202261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320849885.3U Expired - Lifetime CN203732198U (en) | 2013-12-20 | 2013-12-20 | Pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203732198U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910747A (en) * | 2016-04-26 | 2016-08-31 | 江苏华夏仪表有限公司 | Stress transmitter |
| CN106370347A (en) * | 2016-09-09 | 2017-02-01 | 重庆大学 | Spaceflight ordnance ignition test pressure sensor drift adaptive correction method |
| CN110514348A (en) * | 2019-09-02 | 2019-11-29 | 武汉松野智能仪表有限公司 | A kind of intelligent digital pressure transmitter circuit |
-
2013
- 2013-12-20 CN CN201320849885.3U patent/CN203732198U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910747A (en) * | 2016-04-26 | 2016-08-31 | 江苏华夏仪表有限公司 | Stress transmitter |
| CN106370347A (en) * | 2016-09-09 | 2017-02-01 | 重庆大学 | Spaceflight ordnance ignition test pressure sensor drift adaptive correction method |
| CN106370347B (en) * | 2016-09-09 | 2019-03-19 | 重庆大学 | A kind of Space Pyrotechnics Devices product ignition test pressure sensor drift self-adapting correction method |
| CN110514348A (en) * | 2019-09-02 | 2019-11-29 | 武汉松野智能仪表有限公司 | A kind of intelligent digital pressure transmitter circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |