CN201330879Y - Intelligent electric device - Google Patents
Intelligent electric device Download PDFInfo
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- CN201330879Y CN201330879Y CNU2008201450180U CN200820145018U CN201330879Y CN 201330879 Y CN201330879 Y CN 201330879Y CN U2008201450180 U CNU2008201450180 U CN U2008201450180U CN 200820145018 U CN200820145018 U CN 200820145018U CN 201330879 Y CN201330879 Y CN 201330879Y
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Abstract
The utility model relates to an intelligent electric device utilizing a pressure sensor for detection. The device comprises a mechanical part and an electrical control part, wherein, the mechanical part comprises a case body, a worm and a pressure plate; the electrical control part comprises a master control circuit and peripheral circuits connected with the master control circuit respectively; the master control circuit comprises a CPU, and an alarm input circuit and an A/D module connected with the CPU respectively; the mechanical part also comprises the pressure sensor; the pressure sensor is mounted on the worm and is fixed on the case body through the pressure plate; and the peripheral circuits also comprises an adjustment circuit and a phase sequence detection unit. The device has the beneficial effects that for electric devices with different models, the only requirement is changing the inner hole of the pressure sensor according to the size of a motor output shaft, and the other parts are the same, so that production and maintenance are more convenient; in addition, the detection precision of torque is greatly increased because of the adoption of a direct measurement mode.
Description
Technical field
The utility model relates to the control gear of valve, particularly a kind of intelligent electric device that utilizes pressure transducer to detect.
Background technique
Intelligent electric device in the market generally has following two kinds on the detection mode of moment: 1, spring detects formula.2, current of electric detects formula.But this dual mode all exists deficiency and defective.At first, spring moment detects, and its mechanism's complexity after working long hours, because the fatigue of spring causes measuring accuracy to descend significantly, caused the moment false alarm easily; And utilize current of electric to detect the mode of measuring moment indirectly, owing to be to adopt the mode of measuring indirectly, so restricted by environmental factor.Particularly the current of electric temperature influence is very big, and the work entails of motor can produce heat, and then promotes environment temperature.So the moment detection mode of current type, itself can't avoid the generation of error.
Summary of the invention
In view of the defective that above-mentioned prior art exists, the utility model provides a kind of intelligent electric device that utilizes pressure transducer to detect.This device is according to the principle of piezoceramics crystal stress deformation, designed the mechanical structure of pressure sensor assembly, simultaneously the cooperative mechanical structural design automatically controlled part, increased adjustment circuit and phase sequence detection unit to pressure sensor signal in the peripheral circuit of automatically controlled part, this Design of device has overcome Electric actuator is easy to generate error on detecting defective.
The technological scheme that the utility model is taked for achieving the above object is: a kind of intelligent electric device, comprise mechanical part and automatically controlled part, and mechanical part comprises casing, worm screw and pressing plate; The electric control part branch comprises governor circuit and the peripheral circuit that is connected with governor circuit respectively, warning input circlult and A/D module that governor circuit comprises CPU and is connected with CPU respectively, it is characterized in that: described mechanical part also comprises pressure transducer, pressure transducer is installed on the described worm screw, and is fixed on the described casing by pressing plate; Described peripheral circuit also comprises adjusts circuit and phase sequence detection unit, adjusts circuit and is connected with described A/D module; The phase sequence detection unit is connected with described warning input circlult.
The beneficial effect that the utility model reached is: for the Electric actuator of different model, only need change the endoporus of pressure sensor assembly according to the size of motor output shaft, other parts can be used same parts fully, make to produce and safeguard convenient.And, improved the testing precision of moment greatly owing to adopt direct metering system.
Description of drawings
Fig. 1 is the overall mechanical structure sectional view of the utility model and as Figure of abstract.
Fig. 2 is pressure sensor assembly of the present utility model and pressing plate ssembly drawing.
Fig. 3 is the exploded view of Fig. 2.
Fig. 4 is the automatically controlled part schematic diagram of the utility model.
Fig. 5 adjusts circuit theory diagrams among Fig. 4.
Fig. 6 is a phase sequence detection unit schematic diagram among Fig. 4.
Fig. 7 is the utility model program flow diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
With reference to accompanying drawing, the utility model comprises mechanical part and automatically controlled part, and mechanical part comprises casing 1, worm screw 2 and pressing plate 3; The electric control part branch comprises governor circuit and the peripheral circuit that is connected with governor circuit respectively, warning input circlult and A/D module that governor circuit comprises CPU and is connected with CPU respectively, mechanical part also comprises pressure transducer 4, pressure transducer 4 is installed on the worm screw 2, and is fixed on the casing 1 by pressing plate 3; Peripheral circuit also comprises adjusts circuit and phase sequence detection unit, adjusts circuit and is connected with the A/D module; The phase sequence detection unit is connected with the warning input circlult.
Pressure transducer 4 comprises pressure plectane 4.1, pressure pad 4.2, sensing pad 4.3, piezoceramics crystal 4.4, sensing plectane 4.5 and pressure sensor circuit plate 4.6, piezoceramics crystal 4.4 and pressure sensor circuit plate 4.6 are separately fixed on the sensing plectane 4.5, and pressure pad 4.2, sensing pad 4.3 and sensing plectane 4.5 are enclosed within respectively on the pressure plectane 4.1.
All be provided with center hole on pressure plectane 4.1, pressure pad 4.2, sensing pad 4.3 and the sensing plectane 4.5, all be provided with cylinder table on pressure plectane 4.1 and the sensing plectane 4.5.On pressure pad 4.2, sensing pad 4.3 and the sensing plectane 4.5 on the diameter of center hole and the pressure plectane 4.1 external diameter of round platform post be Spielpassung.The next door of center hole also is provided with and is used for fixing the circular hole that piezoceramics crystal 4.4 is installed on the sensing plectane 4.5, the both sides of circular hole are respectively equipped with the aperture that is used for fixing pressure sensor circuit plate 4.6, load onto pillar 4.7 in the aperture, pressure sensor circuit plate 4.6 is fixed on the sensing plectane 4.5 with screw 4.8.Be equipped with the location aperture on pressure plectane 4.1, pressure pad 4.2, sensing pad 4.3 and the sensing plectane 4.5, pressure transducer 4 is positioned on the casing 1 by the location aperture with pin, and pressure transducer 4 usefulness screws 6 is fixed on the casing 1 by the pressing plate 3 that is pressed on the sensing plectane 4.5.For pressing plate 3 and pressure transducer 4 are assembled, pressing plate 3 is made as opening shape.After being sleeved on the pressure transducer 4 that assembles and pressing plate 3 on the worm screw 2, its pressure plectane 4.1 is close on the inwall of casing 1, and bearing 5 is embedded in the round platform post on the sensing plectane 4.5.
Piezoceramics crystal (outsourcing piece) can be fixed on the sensing plectane with gluing the connecing of industry, and pressure plectane, pressure pad, sensing plectane and pressing plate all adopt corrosion resistant plate, and the sensing pad adopts rubber material to make.
Adjustment circuit in the utility model governor circuit comprises signal generator U1 and piezoceramics crystal U2,1 pin of piezoceramics crystal U2 is connected to 1 pin of signal generator U1,2 pin of piezoceramics crystal U2 are connected to 5 pin of signal generator U1,3 pin of piezoceramics crystal U2 and 5 pin are connected respectively to 6 pin of signal generator U1,4 pin of piezoceramics crystal U2 are connected to 2 pin of signal generator U1,3 pin of signal generator U1 are connected to 4 pin of signal generator U1 through resistance R S1 and RS2,11 pin of signal generator U1 are connected to 12 pin of signal generator U1 through resistance R L1,1 pin of signal generator U1 links to each other with 12 pin of signal generator U1, and 2 pin of piezoceramics crystal U2 and 4 pin pass through 6 pin that capacitor C S1 and CS2 are connected to signal generator U1 respectively; Current output terminal is connected to the anode of diode D1 through inductance L 1, the negative electrode of diode D1 is connected to the collector electrode of triode Q1, be connected to 10 pin of signal generator U1, current input terminal is connected to 7 pin of signal generator U1 through inductance L 2, the base stage of triode Q1 is connected to 9 pin of signal generator U1, and the emitter of triode Q1 is connected to 8 pin of signal generator U1.
Phase sequence detection unit in the utility model peripheral circuit comprises detection chip U5, power supply U passes through 1 pin that resistance R 19 and R20 are connected to detection chip U5 mutually, power supply V passes through 2 pin that resistance R 24 and R25 are connected to detection chip U5 mutually, power supply W passes through 3 pin that resistance R 29 and R30 are connected to detection chip U5 mutually, power supply U passes through the negative electrode that resistance R 15 and diode D1 are connected to diode D4 mutually again, power supply V passes through the negative electrode that resistance R 16 and diode D2 are connected to diode D4 mutually, power supply W passes through the negative electrode that resistance R 17 and diode D3 are connected to diode D4 mutually, the anode of diode D4 is connected to 7 pin of detection chip U5, the negative electrode of diode D4 is connected to 14 pin of detection chip U5, and 8 pin of detection chip U5 and 9 pin are connected respectively to described warning input circlult.
Working principle of the present utility model: motor output shaft passes sensing plectane and shaft gear match, and tightly contacts with bearing on the sensing plectane by the step on the axle.When Electric actuator is worked, the stressed axial float that can produce trace of worm screw, this play can be applied on the pressure transducer, after piezoceramics crystal is subjected to external pressure, piezoceramics crystal can produce the deformation of trace, and this deformation meeting causes the change of piezoceramics crystal electrical property.At first can be put in order by the inner integrated circuit of piezoceramics crystal and amplify, and be delivered to the adjustment circuit.Adjust circuit with the signal that receives adjust, processing such as amplification, and utilize signal generator to export one tunnel 4～20mA dc current signal, this road current signal is admitted to the A/D module of governor circuit.The A/D module to current signal keep, sampling and A/D conversion, and the data information after will changing is sent to CPU, carries out follow-up work by the program of finishing writing in advance in the CPU then.
In addition, after three phase mains input phase U, V, W pass through the dividing potential drop of divider resistance respectively, gathered, analyze and compare by phase sequence detection chip (783A).It is forward or negative sense or phase shortage that the phase sequence detection chip is judged power phase according to the amplitude of three phase mains and phase relationship.And the phase sequence detection chip can utilize the level of its No. 8 and No. 9 pins to change the warning input circlult that is delivered to master board situation about judging.The warning input circlult produces digital information according to the level situation that receives, and this information is sent to CPU, carries out follow-up work by the program of finishing writing in advance in the CPU then.
Claims (4)
1, a kind of intelligent electric device comprises mechanical part and automatically controlled part, and mechanical part comprises casing (1), worm screw (2) and pressing plate (3); The electric control part branch comprises governor circuit and the peripheral circuit that is connected with governor circuit respectively, warning input circlult and A/D module that governor circuit comprises CPU and is connected with CPU respectively, it is characterized in that: described mechanical part also comprises pressure transducer (4), pressure transducer (4) is installed on the described worm screw (2), and is fixed on the described casing (1) by pressing plate (3); Described peripheral circuit also comprises adjusts circuit and phase sequence detection unit, adjusts circuit and is connected with described A/D module; The phase sequence detection unit is connected with described warning input circlult.
2, intelligent electric device as claimed in claim 1, it is characterized in that: described pressure transducer (4) comprises pressure plectane (4.1), pressure pad (4.2), sensing pad (4.3), piezoceramics crystal (4.4), sensing plectane (4.5) and pressure sensor circuit plate (4.6), described piezoceramics crystal (4.4) and pressure sensor circuit plate (4.6) are separately fixed on the sensing plectane (4.5), and pressure pad (4.2), sensing pad (4.3) and sensing plectane (4.5) are enclosed within respectively on the pressure plectane (4.1).
3, intelligent electric device as claimed in claim 1, it is characterized in that: described adjustment circuit comprises signal generator (U1) and piezoceramics crystal (U2), 1 pin of piezoceramics crystal (U2) is connected to 1 pin of signal generator (U1), 2 pin of piezoceramics crystal (U2) are connected to 5 pin of signal generator (U1), 3 pin of piezoceramics crystal (U2) and 5 pin are connected respectively to 6 pin of signal generator (U1), 4 pin of piezoceramics crystal (U2) are connected to 2 pin of signal generator (U1), 3 pin of signal generator (U1) pass through resistance (RS1) and (RS2) are connected to 4 pin of signal generator (U1), 11 pin of signal generator (U1) are connected to 12 pin of signal generator (U1) through resistance R L1,1 pin of signal generator (U1) links to each other with 12 pin of signal generator (U1), and 2 pin of piezoceramics crystal (U2) and 4 pin pass through electric capacity (CS1) respectively and (CS2) are connected to 6 pin of signal generator (U1); Current output terminal is connected to the anode of diode (D1) through inductance (L1), the negative electrode of diode (D1) is connected to the collector electrode of triode (Q1), be connected to 10 pin of signal generator (U1), current input terminal is connected to 7 pin of signal generator (U1) through inductance (L2), the base stage of triode (Q1) is connected to 9 pin of signal generator (U1), and the emitter of triode (Q1) is connected to 8 pin of signal generator (U1).
4, intelligent electric device as claimed in claim 1, it is characterized in that: described phase sequence detection unit comprises detection chip (U5), power supply U passes through resistance (R19) mutually and (R20) is connected to 1 pin of detection chip (U5), power supply V passes through resistance (R24) mutually and (R25) is connected to 2 pin of detection chip (U5), power supply W passes through resistance (R29) mutually and (R30) is connected to 3 pin of detection chip (U5), power supply U passes through the negative electrode that resistance (R15) and diode (D1) are connected to diode (D4) mutually again, power supply V passes through the negative electrode that resistance (R16) and diode (D2) are connected to diode (D4) mutually, power supply W passes through the negative electrode that resistance (R17) and diode (D3) are connected to diode (D4) mutually, the anode of diode (D4) is connected to 7 pin of detection chip (U5), the negative electrode of diode (D4) is connected to 14 pin of detection chip (U5), and 8 pin of detection chip (U5) and 9 pin are connected respectively to described warning input circlult.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201450180U CN201330879Y (en) | 2008-12-29 | 2008-12-29 | Intelligent electric device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201450180U CN201330879Y (en) | 2008-12-29 | 2008-12-29 | Intelligent electric device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201330879Y true CN201330879Y (en) | 2009-10-21 |
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ID=41224259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201450180U Expired - Fee Related CN201330879Y (en) | 2008-12-29 | 2008-12-29 | Intelligent electric device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201330879Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465471A (en) * | 2015-12-31 | 2016-04-06 | 天津宝恒流体控制设备股份有限公司 | Weighing type over-moment device applied to electric actuating mechanism |
-
2008
- 2008-12-29 CN CNU2008201450180U patent/CN201330879Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465471A (en) * | 2015-12-31 | 2016-04-06 | 天津宝恒流体控制设备股份有限公司 | Weighing type over-moment device applied to electric actuating mechanism |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20161229 |