CN201083580Y - Intelligent electronic pressure meter - Google Patents
Intelligent electronic pressure meter Download PDFInfo
- Publication number
- CN201083580Y CN201083580Y CNU2007201138230U CN200720113823U CN201083580Y CN 201083580 Y CN201083580 Y CN 201083580Y CN U2007201138230 U CNU2007201138230 U CN U2007201138230U CN 200720113823 U CN200720113823 U CN 200720113823U CN 201083580 Y CN201083580 Y CN 201083580Y
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- signal conditioning
- circuit
- singlechip cpu
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- cpu
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Abstract
The utility model provides an intelligent electronic manometer which mainly comprises a pressure sensor, a signal conditioning circuit, a main control circuit, a digital display circuit and a power supply. The main control circuit adopts a SCM CPU with a ROM chip and an operation key K, the pressure sensor DW01 is connected to a signal conditioning circuit I03 composed of by a ADC signal conditioning chip via two circuits, and the output digital signals of the signal conditioning circuit I03is communicated with the SCM CPU directly; the operation key K comprises three micro motion buttons K1, K2, K3 used for positioning upper and lower limits control point and a micro motion button K4 used for switching over the display unit; the keys are connected respectively to the end feet P0.0, P0.1, P0.2 and P0.3 of the SCM CPU; the end feet from P3.3 to P3.7 of the SCM CPU are connected to the lattice figure LCD L01, the end feet P2.2 and P2.3 of the SCM CPU are connected to the digitron driving chips form I07 to I12, and the digital driving chips are connected to high brightness digitron from E01 to E06; the utility model has the advantages of a reasonable structure, convenient and reliable utilization, high precision, good duration, long service life and good stability.
Description
Technical field
The utility model relates to a kind of intelligent electron pressure and become and send device, belong to pressure survey, control and pressure data teletransmission technical field automatically.
Background technology
The present known tensimeter that is used for measuring the pressure that is produced from liquid, gas, oil, steam etc., function singleness not only, reading of data is clear inadequately, accurate, the degree of accuracy that reads is difficult to improve, its reason is many-sided, wherein the structure composition is too simple, and automaticity is not high to be one of reason wherein.Therefore, being seen in the market tensimeter can not satisfy high-precision pressure survey, and their range is narrower, be difficult to once finish during to need wide range and wide-range operation, the overvoltage amplitude is low, and is particularly perishable during the high range operation, return zero difficulty, Temperature Influence is more serious.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, not only can accurately measure by the pressure data of measuring pressure and provide a kind of, and can directly show, be convenient to accurately read with numeral, return zero accurately, its precision meets the smart electronics tensimeter of national standard fully.
The purpose of this utility model is finished by following technical solution, it is mainly by pressure transducer, signal conditioning circuit, governor circuit, digital display circuit and power supply are formed, described governor circuit employing one has the singlechip CPU of rom chip I06 and operating key K, and pressure transducer DW01 links to each other with a signal conditioning circuit I03 who is made of ADC signal condition chip through two-way, is directly linked to each other with singlechip CPU by this signal conditioning circuit I03 output digital signal.
Described operating key K comprises and is used for three the fine motion knob K1, K2, the K3 that are set up an office in each upper and lower limit reference mark respectively, and also has a microswitch K4 who is used to switch the unit of display; Described operating key K is connected to respectively on P0.0, P0.1, P0.2 and the P0.3 end pin of singlechip CPU.
The P3.3-P3.7 end pin of described singlechip CPU is connected to lattice graphics lcd display screen L01 respectively, and the P2.2 of singlechip CPU and P2.3 end pin are connected to charactron chip for driving I07-I12, and this is organized digital chip for driving and is connected with highlighted charactron E01-E06.
The P1.7 end pin of described singlechip CPU is connected to upper and lower limit the hummer that outrange, maloperation are reported to the police.And being connected to the upper limit, lower limit control output end mouth J03, J04 at P1.0-P1.1 end pin, each drives connection by a triode Q01, Q02 this two-port.
The utility model directly nurses one's health numeral after sensor is accepted pressure signal, directly handle each task by singlechip CPU again, no analogue amplifier, there are not any mechanical movable part, intermediary's liquid, alite paste etc. yet, its comprehensive measured precision reaches 0.005%FS, temperature compensation-70 ℃～300 ℃, and thermal sensitivity drift is less than 0.005%FS/ ℃, non-linear less than: 0.003%FS, its circuit is simple, peripheral cell is few.Have rational in infrastructure, easy to use and reliable, the precision height, durable, long service life, characteristics such as stability.
Description of drawings
Fig. 1 is a structure composition frame chart of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail: shown in the accompanying drawing 1, the utility model is mainly by pressure transducer 1, signal conditioning circuit 2, governor circuit 3, digital display circuit 4 and power supply are formed, and described governor circuit 3 employings one have the singlechip CPU of storer 5 and the operating key K of rom chip I06.This singlechip CPU by the RS232 telecommunication circuit 6 of joining communicate by letter with computer real-time, record data, online upgrading, renewal, pressure unit is switched, and its value that converts automatically.Described singlechip CPU also can directly be exported digital signal by PWM one line interface 7 that joins; All right upper and lower warning output of gamut and upper limit return difference, lower limit return difference are reported to the police and are exported, and directly drive the peripheral hardware control circuit 8 that is attached thereto.Described peripheral hardware control circuit 8 comprises control Driver Circuit 9, hummer 10 and peripheral hardware control output 11.4 of digital display circuits described in the utility model comprise lattice graphics lcd screen 12, the charactron display 14 that is directly driven by charactron driving circuit 13.Described pressure transducer 1 adopts ion beam sputtered thin-film pressure transducer, also can adopt the bigger pressure unit of volume.
Shown in the accompanying drawing 2, by ADC signal condition chip, signal conditioning circuit I03's pressure transducer DW01 that constitutes as CS1242 links to each other through two-way and, is directly linked to each other with singlechip CPU by this signal conditioning circuit I03 output digital signal.Described singlechip CPU adopts 8 or 16 in-circuit emulation single-chip microcomputers, as Intel 80C31BH.Described ACD signal condition chip adopts 24 ACD chips of high precision, monolithic conditioning, two-way input.
Described operating key K comprises and is used for three the fine motion knob K1, K2, the K3 that are set up an office in each upper and lower limit reference mark respectively, and also has a microswitch K4 who is used to switch the unit of display; Described operating key K is connected to respectively on P0.0, P0.1, P0.2 and the P0.3 end pin of singlechip CPU.K1, K2, K3 be used for respectively the setting at each upper and lower limit reference mark is spring-loaded pushbutton, and K4 is used for switching the unit of display, and in a looping fashion, unit converts automatically.
The P3.3-P3.7 end pin of described singlechip CPU is connected to lattice graphics lcd display screen L01 respectively, and it mainly is to show measurement result, unit, maximal value, upper limit alarm, lower limit warning etc.The P2.2 of singlechip CPU and P2.3 end pin are connected to charactron chip for driving I07-I12, and this is organized digital chip for driving and adopts 74LS164 to drive the highlighted charactron E01-E06 that is attached thereto, and shows measurement result.
The P1.7 end pin of described singlechip CPU is connected to upper and lower limit the cylindricality hummer Y01 that outrange, maloperation are reported to the police.And being connected to the upper limit, lower limit control output end mouth J03, J04 at P1.0-P1.1 end pin, each drives connection by a triode Q01, Q02, optional 9012 triodes this two-port.D03 shown in the accompanying drawing 2 is a power light, adopts 3mm light emitting diode, and J01 is a power supply input socket, and I01, I02 are band stabilized voltage supply isolating chip, and I01 is that 12V, I02 are 5V.All calibrations, conditioning, programming, compensation, non-linear finishing, zero point correction etc. all utilize computing machine to finish.I06 is a rom chip, i.e. 24C08 series is used for the store various types setting; I05 is a serial port chip, adopts MAX232 to follow computer real-time communication, real time record, demonstration, preservation, record data, printing, remote meter reading, program upgrade, on-line calibration etc. by the J05 port.Shown in the accompanying drawing 2 other is known general knowledge, and those of ordinary skill in the art is understanding on the basis of the present utility model, and the content shown in is very easy to enforcement of the present utility model in conjunction with the accompanying drawings.
The utility model adopts and wins this special sputtered film formula principle, there are not any mechanical movable part and intermediary's liquid and alite paste, electronic circuit partly adopts high precision monolithic pressure conditioning chip ZMD3 series or MXA1426 and FS9821/22/24 series, demonstrated fully stability of the present invention, its comprehensive measured precision is up to 0.01%, working temperature reaches-70 ℃-300 ℃, thermal sensitivity drift is less than 0.005%FS ℃, its simple in circuits, few peripheral cell, its volume and weight can be accomplished minimum and extremely light, and the fitting pedestal adopts stainless steel L316, and is explosion-proof, antidetonation, corrosion resistivity is extremely strong.
Claims (4)
1. smart electronics tensimeter, it is mainly by pressure transducer (1), signal conditioning circuit (2), governor circuit (3), digital display circuit (4) and power supply are formed, described governor circuit employing one has the singlechip CPU of rom chip I06 and operating key K, and pressure transducer DW01 links to each other with a signal conditioning circuit I03 who is made of ADC signal condition chip through two-way, is directly linked to each other with singlechip CPU by this signal conditioning circuit I03 output digital signal.
2. smart electronics tensimeter according to claim 1, it is characterized in that described operating key K comprises is used for three the fine motion knob K1, K2, the K3 that are set up an office in each upper and lower limit reference mark respectively, and also has a microswitch K4 who is used to switch the unit of display; Described operating key K is connected to respectively on P0.0, P0.1, P0.2 and the P0.3 end pin of singlechip CPU.
3. smart electronics tensimeter according to claim 1 and 2 is characterized in that the P3.3-P3.7 end pin of described singlechip CPU is connected to lattice graphics lcd display screen L01 respectively; The P2.2 of singlechip CPU and P2.3 end pin are connected to charactron chip for driving I07-I12, and this is organized digital chip for driving and is connected with highlighted charactron E01-E06.
4. smart electronics tensimeter according to claim 3 is characterized in that the P1.7 end pin of described singlechip CPU is connected to upper and lower limit the hummer that outrange, maloperation are reported to the police.And being connected to the upper limit, lower limit control output end mouth J03, J04 at P1.0-P1.1 end pin, each drives connection by a triode Q01, Q02 this two-port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201138230U CN201083580Y (en) | 2007-08-28 | 2007-08-28 | Intelligent electronic pressure meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201138230U CN201083580Y (en) | 2007-08-28 | 2007-08-28 | Intelligent electronic pressure meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201083580Y true CN201083580Y (en) | 2008-07-09 |
Family
ID=39626047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201138230U Expired - Fee Related CN201083580Y (en) | 2007-08-28 | 2007-08-28 | Intelligent electronic pressure meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201083580Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806540A (en) * | 2016-05-09 | 2016-07-27 | 浙江省机电设计研究院有限公司 | Pump inlet and outlet end pressure measurement instrument control device and method |
-
2007
- 2007-08-28 CN CNU2007201138230U patent/CN201083580Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806540A (en) * | 2016-05-09 | 2016-07-27 | 浙江省机电设计研究院有限公司 | Pump inlet and outlet end pressure measurement instrument control device and method |
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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: 20080709 Termination date: 20110828 |