CN201003998Y - Integrated intelligent tension transformer - Google Patents
Integrated intelligent tension transformer Download PDFInfo
- Publication number
- CN201003998Y CN201003998Y CNU2007200669798U CN200720066979U CN201003998Y CN 201003998 Y CN201003998 Y CN 201003998Y CN U2007200669798 U CNU2007200669798 U CN U2007200669798U CN 200720066979 U CN200720066979 U CN 200720066979U CN 201003998 Y CN201003998 Y CN 201003998Y
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- circuit mainboard
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Abstract
The utility model discloses a bodily form intelligent pressure transmitter which comprises a transmitter shell, a sensor, a circuit main board and the accessory parts; wherein, the sensor and the transmitter adopt the all-in-one mechanism to make a splint and the sensor to one body, a testing module head used for bearing pressure and the sensor used for inducting temperature are arranged in the shell of the all-in-one transmitter, the transmitter shell is T structured and a front cover and a rear cover, the circuit main board is built-in the transmitter, L C D display is positioned in front of the circuit main board and is able to observe the figures on the display through a glass window; the circuit main board is provided with an isobarical and constant flow jointing place so as to conveniently make the circuit main board to connect different sensors, and the filter circuit is used for filtering the outer disturbing signals. The utility model has the advantages of small error, high precision, applicability for variety sensors and convenient installation etc.
Description
Technical field
The utility model relates to one-piece type intelligent pressure transmitter, relates in particular to the transmitter of a kind of gaging pressure, flow.
Background technology
Original one-piece type intelligent pressure transmitter principle adopts " sensitive measurement element-linear amplifier-analog quantity output " mostly; Circuit mainboard pattern is single, can only supportingly be applicable to the sensor of single character; And traditional clamping plate that adopt all the time of sensor are installed, and field engineering falls behind.In recent years, the improved a little transmitter of a kind of technology has appearred, its measuring principle adopts " sensitive measurement element-analogue amplifier-little processing-D/A conversion " this pattern pattern more in the past that very big progress has been arranged, but still have many deficiencies: sensor is just used conventional mounting, is subjected to extraneous stress and ambient temperature effect bigger; Circuit mainboard and sensor interoperability are not strong, use restricted; The circuit mainboard is also relatively poor from experience ambient temperature and disturbed condition.
For overcoming above shortcoming, be necessary to develop a kind of novel one-piece type more accurately intelligent pressure transmitter of measurement that makes.
Summary of the invention
The purpose of this utility model provides one-piece type intelligent pressure transmitter, both can reduce the error that sensor is produced by extraneous stress and ambient temperature effect, can make the circuit mainboard can be applicable to the sensor of different size again, and can self carry out temperature compensation and anti-interference, LCDs adopts backlight and can become 90 degree rotations, be connected by plug-in unit with the main line mainboard, and display mode has multiple measuring unit, even the transmitter measurement is more accurate like this, it is more convenient that transmitter is operated.
In order to achieve the above object, the utility model is by the following technical solutions: a kind of one-piece type intelligent pressure transmitter, comprise the transmitter housing, sensor and circuit mainboard and appurtenances thereof, the sensor transducer housing adopts integral structure, promptly improved traditional with clamping plate and the fixing pattern of screw, clamping plate and sensor housing are made of one type, the sensor that is used to experience the measurement film head of pressure and experience temperature places incorporate transmitter enclosure interior, sensor housing one sidewall is provided with an interface, establish a T type flange head at interface, with a bolt in sensor housing, and on T type flange head, establish a flange impulse connecting pipe, be used to be communicated with medium to be measured; Measure the film head outside and adopt a sensing membrane skull sealing respectively, the transmitter housing is a T type structure, on have before table lid and back table lid, the circuit mainboard is built in the transmitter enclosure interior, before LCD display is positioned at the circuit mainboard, can observe numeral on the display screen by glass vision panel; The circuit mainboard is provided with constant voltage and CONSTANT CURRENT WELDING position, is convenient to the circuit mainboard and connects different sensors, and filtering circuit is arranged, and is used for filtering external interference signal.
On the technique scheme basis, the integral structure that described sensor transducer housing is made up of parts of stainless steel is used this structure and is had two effects: one, reduces the working time and enhance productivity; Two, eliminating adopted the screw fixed mode to be subjected to extraneous stress and environment temperature that these parts are produced physical action in the past, and influenced measuring accuracy.
On the technique scheme basis, described sensor is made up of sensitive element, temperature sensor, Direct Digital condenser network and characterization eeprom memory, the effect that barrier film head on the sensitive element is measured pressure medium produces deformation, pressure signal transmission is given the measurement film head of sensitive element inside, the position of measuring the variation of film head detects by the Direct Digital condenser network, be translated into frequency signal simultaneously, and the proportional relation of this frequency signal and pressure signal; Temperature sensor is used for the temperature of measuring media, and is translated into digital signal; The characterization eeprom memory is used for preserving transmitter temperatures compensation, sensor characterization curve and characteristic and digital trimming signal.
On the technique scheme basis, described circuit mainboard comprises: microprocessor, D/A signal converter, digital communication and eeprom memory are formed.The circuit mainboard adopts special IC and surface mounting technology, accepts digital input signals and correction factor from sensor, and then signal is revised and linearization; The operation of microprocessor control transmitter, utilize the data in the sensor characterization eeprom memory to carry out linearization process and compensation operation, calculate the force value of actuating medium, in addition, microprocessor also carries out the functions such as conversion, damping adjustment and self diagnosis of computing, engineering unit and the range of transport function; The process variable that the storer eeprom memory can permanently be measured storage does not influence and be not subjected to cut off the power supply with digital data, and therefore, as outage, transmitter still can be worked after connecting with the mains again immediately; Digital to analog converter will be converted to the output of 4-20mA simulating signal through revised data-signal; The digital communication form adopts the communication of HART agreement, use industrial standard Bell202 modulated by frequency shift technology, a high-frequency signal is superimposed upon on the analog current of 4-20mA, to realize telecommunication, during communication, frequency signal does not produce any interference to the process of 4-20mA.
On the technique scheme basis, the circuit mainboard is provided with constant voltage and constant current power switch, therefore can go the selector switch pattern according to the needed different power supply modes of different sensors, make with a kind of circuit mainboard and go for sensors of various types, improved the multi-functional use pattern of circuit mainboard greatly.
On the technique scheme basis, the circuit mainboard is provided with plug-in unit, can and not be with display screen according to client's needs select tape display screen, by the plug-in unit connected mode, has simplified the service routine of circuit mainboard greatly, has improved production efficiency.
On the technique scheme basis, LCD display adopts backlight technology, has made things convenient for field observation and the operation of client under rugged surroundings; The plug-in unit of LCD display and circuit mainboard becomes 90 degree arranged, and function equivalent, so display screen can become 90 degree rotations, makes things convenient for the field data of engineering to observe and operation.
On the technique scheme basis, increase attached filtering electronics circuit pack, this electronic circuit part can be carried out the reverse electrode protection, gets rid of the signal interference that passes to transmitter through power lead.
This is suitable for novel advantage: one, the circuit mainboard can carry out linearity correction and auto thermal compensation, improves measuring accuracy; The constant pressure and flow conversion makes the circuit mainboard can connect different types of sensor, realizes multifunctional communication; Display module has backlight and can rotate by 90 degree, conveniently installs and observes; Two, sensing system partly is combined as an integral part, and is easy for installation, and can reduce the measuring error that environmental impact brings; Three, the attached electronic circuit parts has filter function, gets rid of extraneous hash, makes measurement more accurate.
Description of drawings
Fig. 1 is the one-piece construction perspective exploded view of one-piece type intelligent pressure transmitter;
Fig. 2 is the workflow diagram of one-piece type intelligent pressure transmitter;
Fig. 3 is the schematic diagram of Direct Digital condenser network in the one-piece type intelligent pressure transmitter;
Fig. 4 is the circuit theory diagrams of circuit mainboard in the one-piece type intelligent pressure transmitter.
Code description among the figure
1---the back table covers 2,9---O type circle
3---terminal block 7---circuit mainboard
The preceding table lid of 8---LCD display 10---
11---transmitter housing 13---Direct Digital condenser network
14---sensing membrane skull 15---flange O type circle
16---T type flange head 17---bolt
18---flange impulse connecting pipe 19---sensor housing
20---measure the film head
Embodiment
Shown in the circuit theory diagrams of circuit mainboard in the schematic diagram of Direct Digital condenser network in the one-piece construction perspective exploded view of the one-piece type intelligent pressure transmitter of Fig. 1, the workflow diagram of the one-piece type intelligent pressure transmitter of Fig. 2, the one-piece type intelligent pressure transmitter of Fig. 3 and the one-piece type intelligent pressure transmitter of Fig. 4:
The utility model adopts following technology implementation mode: a kind of one-piece type intelligent pressure transmitter, comprise transmitter housing 11, sensor (not shown) and circuit mainboard 7 and appurtenances thereof, sensor (not shown) and transmitter housing 11 adopt integral structure, clamping plate and sensor housing 19 are made of one type, the sensor (not shown) that is used to experience the measurement film head 20 of pressure and experience temperature places incorporate transmitter housing 11 inside, sensor housing 19 1 sidewalls are provided with an interface, establish T type flange head 16 at interface, with bolt 17 T type flange head 16 is fixed in sensor housing 19, and on T type flange head 16, establish a flange impulse connecting pipe 18, be used to be communicated with testing medium, establish a flange O type circle 15 between T type flange head 16 and the sensor housing 19 with the enhanced leaktightness effect; Measuring the film head 20 outer sensing membrane skulls 14 that add seals, transmitter housing 11 is a T type structure, on have before table cover 10 and the back show to cover 1, before table cover 10 and the back show to cover 1 and transmitter housing 11 between establish O type circle 2,9 respectively, in order to strengthen sealing function to transmitter housing 11, circuit mainboard 7 is built in transmitter housing 11 inside, before LCD display 8 is positioned at circuit mainboard 7, can observe numeral on the display screen by glass vision panel; Circuit mainboard 7 is provided with constant voltage and CONSTANT CURRENT WELDING position, is convenient to circuit mainboard 7 and connects different sensors, and filtering circuit is arranged, and is used for filtering external interference signal.Cover 1 transmitter shell 11 near back table in, be provided with a terminal block 3, be used to connect power lead.
On the technique scheme basis, the integral structure that described sensor transducer housing 11 is made up of parts of stainless steel, using this structure has two effects: one, reduce the working time and enhance productivity; Two, eliminating adopted the screw fixed mode to be subjected to extraneous stress and environment temperature that these parts are produced physical action in the past, and influenced measuring accuracy.
On the technique scheme basis, described sensor (not shown) is made up of sensitive element (not shown), temperature sensor (not shown), Direct Digital condenser network 13 and characterization eeprom memory (not shown), the effect that barrier film head on the sensitive element is measured pressure medium produces deformation, pressure signal transmission is given the measurement film head 20 of sensitive element inside, the position of measuring 20 variations of film head detects by Direct Digital condenser network 13, be translated into frequency signal simultaneously, and the proportional relation of this frequency signal and pressure signal; Temperature sensor is used for the temperature of measuring media, and is translated into digital signal; The characterization eeprom memory is used for preserving transmitter temperatures compensation, sensor characterization curve and characteristic and digital trimming signal.
On the technique scheme basis, described circuit mainboard 7 comprises: microprocessor, D/A signal converter, digital communication and eeprom memory are formed.Circuit mainboard 7 adopts special IC and surface mounting technology, accepts digital input signals and correction factor from sensor, and then signal is revised and linearization; The operation of microprocessor control transmitter, utilize the data in the sensor characterization eeprom memory to carry out linearization process and compensation operation, calculate the force value of actuating medium, in addition, microprocessor also carries out the functions such as conversion, damping adjustment and self diagnosis of computing, engineering unit and the range of transport function; The process variable that the storer eeprom memory can permanently be measured storage does not influence and be not subjected to cut off the power supply with digital data, and therefore, as outage, transmitter still can be worked after connecting with the mains again immediately; Digital to analog converter will be converted to the output of 4-20mA simulating signal through revised data-signal; The digital communication form adopts the communication of HART agreement, use industrial standard Bell202 modulated by frequency shift technology, a high-frequency signal is superimposed upon on the analog current of 4-20mA, to realize telecommunication, during communication, frequency signal does not produce any interference to the process of 4-20mA.
On the technique scheme basis, circuit mainboard 7 is provided with constant voltage and constant current power switch, therefore can go the selector switch pattern according to the needed different power supply modes of different sensors, make with a kind of circuit mainboard 7 and go for sensors of various types, improved the multi-functional use pattern of circuit mainboard 7 greatly.
On the technique scheme basis, circuit mainboard 7 is provided with plug-in unit, can and not be with display screen according to client's needs select tape display screen, by the plug-in unit connected mode, has simplified the service routine of circuit mainboard 7 greatly, has improved production efficiency.
On the technique scheme basis, LCD display 8 adopts backlight technology, has made things convenient for field observation and the operation of client under rugged surroundings; The plug-in unit of LCD display 8 and circuit mainboard 7 becomes 90 degree arranged, and function equivalent, so LCD display 8 can become 90 degree rotations, makes things convenient for the field data of engineering to observe and operation.
On the technique scheme basis, increase attached filtering electronics circuit pack, this electronic circuit part can be carried out the reverse electrode protection, gets rid of the signal interference that passes to transmitter through power lead.
Claims (2)
1. one-piece type intelligent pressure transmitter, comprise transmitter housing, sensor and circuit mainboard and appurtenances thereof, it is characterized in that: sensor and transmitter housing adopt integral structure, clamping plate and sensor housing are made of one type, the sensor that is used to experience the measurement film head of pressure and experience temperature places incorporate transmitter enclosure interior, the transmitter housing is a T type structure, on have before table lid and back table lid, the circuit mainboard is built in the transmitter enclosure interior, before LCD display is positioned at the circuit mainboard, can observe numeral on the display screen by glass vision panel; The circuit mainboard is provided with constant voltage and CONSTANT CURRENT WELDING position, is convenient to the circuit mainboard and connects different sensors, and filtering circuit is arranged, and is used for filtering external interference signal.
2. one-piece type intelligent pressure transmitter according to claim 1, it is characterized in that: described sensor is by sensitive element, temperature sensor, Direct Digital condenser network and characterization eeprom memory are formed, the effect that barrier film head on the sensitive element is measured pressure medium produces deformation, pressure signal transmission is given the measurement film head of sensitive element inside, the Direct Digital condenser network is converted to frequency signal with the pressure that detects, simultaneously, temperature sensor is converted to digital signal with the temperature signal of sensing, these signals all will offer microprocessor, microprocessor carries out characterization and compensation operation with data, give digital to analog converter again and carry out the D/A conversion, become the output of 4-20mA current signal, and HART is provided communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200669798U CN201003998Y (en) | 2007-02-02 | 2007-02-02 | Integrated intelligent tension transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200669798U CN201003998Y (en) | 2007-02-02 | 2007-02-02 | Integrated intelligent tension transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201003998Y true CN201003998Y (en) | 2008-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200669798U Expired - Fee Related CN201003998Y (en) | 2007-02-02 | 2007-02-02 | Integrated intelligent tension transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201003998Y (en) |
Cited By (8)
| 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 |
| CN105181188A (en) * | 2015-07-20 | 2015-12-23 | 湖南菲尔斯特传感器有限公司 | Intelligent pressure transmitter |
| CN105698983A (en) * | 2016-03-02 | 2016-06-22 | 伊玛精密电子（苏州）有限公司 | Corrosion-resisting all-metal pressure transmitter |
| CN107687874A (en) * | 2017-09-25 | 2018-02-13 | 南京航伽电子科技有限公司 | Wireless temperature and pressure one transmitter multy-way switching transmission method |
| CN108871660A (en) * | 2018-07-09 | 2018-11-23 | 山东福瑞德测控***有限公司 | Monocrystalline silicon differential pressure transmitter |
| CN109655192A (en) * | 2018-12-11 | 2019-04-19 | 安徽天康(集团)股份有限公司 | A kind of teletransmission diaphragm pressure transmitter |
| CN111879462A (en) * | 2020-08-04 | 2020-11-03 | 山东福瑞德测控***有限公司 | Pressure transmitter with modular structure |
| CN113916287A (en) * | 2021-09-30 | 2022-01-11 | 杭州云谷科技股份有限公司 | Temperature and pressure integrated sensor |
-
2007
- 2007-02-02 CN CNU2007200669798U patent/CN201003998Y/en not_active Expired - Fee Related
Cited By (9)
| 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 |
| CN105181188A (en) * | 2015-07-20 | 2015-12-23 | 湖南菲尔斯特传感器有限公司 | Intelligent pressure transmitter |
| CN105698983A (en) * | 2016-03-02 | 2016-06-22 | 伊玛精密电子（苏州）有限公司 | Corrosion-resisting all-metal pressure transmitter |
| CN107687874A (en) * | 2017-09-25 | 2018-02-13 | 南京航伽电子科技有限公司 | Wireless temperature and pressure one transmitter multy-way switching transmission method |
| CN108871660A (en) * | 2018-07-09 | 2018-11-23 | 山东福瑞德测控***有限公司 | Monocrystalline silicon differential pressure transmitter |
| CN109655192A (en) * | 2018-12-11 | 2019-04-19 | 安徽天康(集团)股份有限公司 | A kind of teletransmission diaphragm pressure transmitter |
| CN111879462A (en) * | 2020-08-04 | 2020-11-03 | 山东福瑞德测控***有限公司 | Pressure transmitter with modular structure |
| CN111879462B (en) * | 2020-08-04 | 2021-07-06 | 山东福瑞德测控***有限公司 | Pressure transmitter with modular structure |
| CN113916287A (en) * | 2021-09-30 | 2022-01-11 | 杭州云谷科技股份有限公司 | Temperature and pressure integrated sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080109 |