CN204677850U - A kind of electronic expansion valve controls system - Google Patents
A kind of electronic expansion valve controls system Download PDFInfo
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- CN204677850U CN204677850U CN201520349527.5U CN201520349527U CN204677850U CN 204677850 U CN204677850 U CN 204677850U CN 201520349527 U CN201520349527 U CN 201520349527U CN 204677850 U CN204677850 U CN 204677850U
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- expansion valve
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Abstract
The utility model discloses a kind of electronic expansion valve controls system, comprise at least one sensor, touch screen, signal conditioning circuit, first microprocessor, power driving circuit and driving device for step-by-step, sensor is all connected with the signal input part of signal conditioning circuit with the signal output part of touch screen, the signal output part of signal conditioning circuit is connected with the signal input part of first microprocessor, the signal output part of first microprocessor is connected with the signal input part of power driving circuit, the signal output part of power driving circuit is connected with the signal input part of driving device for step-by-step, the signal output part of driving device for step-by-step is connected with the signal input part of electric expansion valve.The utility model structure is simple, can realize the accurate control to electric expansion valve.
Description
Technical field
The utility model relates to control technique field, particularly relates to a kind of electronic expansion valve controls system.
Background technique
Electric expansion valve regulates vaporizer liquid supply rate according to pre-set programs, because belonging to electronic type shaping modes, therefore is called electric expansion valve.It has adapted to the electrical integrated demand for development of refrigerator, has the good characteristic that heating power expansion valve is incomparable, for the intelligentized control method of refrigeration system provides condition, is a kind of rising auto-control energy-saving element.There is the shortcomings such as complex structure, control accuracy are not high in the control system of existing electric expansion valve.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of electronic expansion valve controls system, and structure is simple, can realize the accurate control to electric expansion valve.
The purpose of this utility model is achieved through the following technical solutions: a kind of electronic expansion valve controls system, comprise at least one sensor, touch screen, signal conditioning circuit, first microprocessor, power driving circuit and driving device for step-by-step, sensor is all connected with the signal input part of signal conditioning circuit with the signal output part of touch screen, the signal output part of signal conditioning circuit is connected with the signal input part of first microprocessor, the signal output part of first microprocessor is connected with the signal input part of power driving circuit, the signal output part of power driving circuit is connected with the signal input part of driving device for step-by-step, the signal output part of driving device for step-by-step is connected with the signal input part of electric expansion valve.
Described sensor is temperature transducer, humidity transducer or pressure transducer.
Described sensor is wireless senser, and touch screen is wireless touch screen.
Further, also comprise the first wireless communication chips, the first wireless communication chips is connected with sensor, touch screen, signal conditioning circuit, power driving circuit and driving device for step-by-step respectively.
Described signal conditioning circuit comprises the signal switching circuit, signal de-noising circuit and the signal amplification circuit that connect successively, the signal input part of signal switching circuit is connected with the first wireless communication chips, and the signal output part of signal amplification circuit is connected with the signal input part of first microprocessor.
Described wireless driving device for step-by-step comprises the second wireless communication chips, the second microprocessor, voltage transformation module and motor drive module, second wireless communication chips, voltage transformation module and motor drive module are all connected with the second microprocessor, second wireless communication chips is connected with the first wireless communication chips, motor drive module is provided with motor interface, motor interface is connected with the signal input part of electric expansion valve, and voltage transformation module is provided with power interface.
Described first wireless communication chips and the second wireless communication chips are ZigBee wireless communication chips.
Described power driving circuit is high-voltage great-current darlington transistor array circuit.
Described first microprocessor is single-chip microcomputer.
The beneficial effects of the utility model are:
(1) signal conditioning circuit carries out the process such as filtering, amplification to the signal that sensor exports, and makes first microprocessor can the signal that sends over of identification sensor more accurately, is conducive to the control accuracy improving electronic expansion valve controls system;
(2) data transmission in electronic expansion valve controls system adopts the mode of wireless transmission, makes the more element of this system to be arranged on optimal location, and does not need to carry out loaded down with trivial details physics wiring, still must this system can expand easily meanwhile.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the utility model electronic expansion valve controls system.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection domain of the present utility model is not limited to the following stated.
As shown in Figure 1, a kind of electronic expansion valve controls system, it is characterized in that: comprise at least one sensor, touch screen, signal conditioning circuit, first microprocessor, power driving circuit and driving device for step-by-step, sensor is all connected with the signal input part of signal conditioning circuit with the signal output part of touch screen, the signal output part of signal conditioning circuit is connected with the signal input part of first microprocessor, the signal output part of first microprocessor is connected with the signal input part of power driving circuit, the signal output part of power driving circuit is connected with the signal input part of driving device for step-by-step, the signal output part of driving device for step-by-step is connected with the signal input part of electric expansion valve.
The data such as sensor collecting temperature, humidity or pressure, touch screen is used for the operation of user's input of control commands, signal conditioning circuit is used for carrying out the process such as filtering and amplification to the data-signal that sensor and touch screen transmit, and the data-signal after process is transferred to first microprocessor.First microprocessor sends control signal according to the data-signal received, and this control signal is sent to power driving circuit, power driving circuit carries out enhancing process to this control signal, and being sent to driving device for step-by-step by through the control signal strengthened after process, driving device for step-by-step controls electric expansion valve according to the control signal received.
Described sensor is temperature transducer, humidity transducer or pressure transducer.
Described sensor is wireless senser, and touch screen is wireless touch screen.
Further, also comprise the first wireless communication chips, the first wireless communication chips is connected with sensor, touch screen, signal conditioning circuit, power driving circuit and driving device for step-by-step respectively.
Described signal conditioning circuit comprises the signal switching circuit, signal de-noising circuit and the signal amplification circuit that connect successively, the signal input part of signal switching circuit is connected with the first wireless communication chips, and the signal output part of signal amplification circuit is connected with the signal input part of first microprocessor.Signal switching circuit makes electronic expansion valve controls system can select the input signal needed easily, and signal switching circuit is multi-pole, multi-throw switch.
Described power driving circuit is high-voltage great-current darlington transistor array circuit.
Described wireless driving device for step-by-step comprises the second wireless communication chips, the second microprocessor, voltage transformation module and motor drive module, second wireless communication chips, voltage transformation module and motor drive module are all connected with the second microprocessor, second wireless communication chips is connected with the first wireless communication chips, motor drive module is provided with motor interface, motor interface is connected with the signal input part of electric expansion valve, and voltage transformation module is provided with power interface.In the present embodiment, the STM32 family chip of 32 8-digit microcontrollers representing ARM Cortex-M3 kernel selected by the second microprocessor, and voltage transformation module selects voltage conversion chip TPS54060, and motor drive module selects driving chip TMC262 or THB8128.
Data transmission between each element in electronic expansion valve controls system adopts the mode of wireless transmission, and each element can be arranged on optimum position as required, and does not need the restriction considering whether to receive physics wiring.Meanwhile, adopt wireless mode to transmit data, make system can increase element as required, thus improve the control accuracy etc. of system.
Described first wireless communication chips and the second wireless communication chips are ZigBee wireless communication chips, and ZigBee wireless communication chips selects CC2430 or MC13213 chip.ZigBee communication technology has closely, low complex degree, self-organization, low power consumption, low data rate feature.
Described first microprocessor is single-chip microcomputer, and the model of single-chip microcomputer is STM32 series monolithic.
Claims (9)
1. an electronic expansion valve controls system, it is characterized in that: comprise at least one sensor, touch screen, signal conditioning circuit, first microprocessor, power driving circuit and driving device for step-by-step, sensor is all connected with the signal input part of signal conditioning circuit with the signal output part of touch screen, the signal output part of signal conditioning circuit is connected with the signal input part of first microprocessor, the signal output part of first microprocessor is connected with the signal input part of power driving circuit, the signal output part of power driving circuit is connected with the signal input part of driving device for step-by-step, the signal output part of driving device for step-by-step is connected with the signal input part of electric expansion valve.
2. a kind of electronic expansion valve controls system according to claim 1, is characterized in that: described sensor is temperature transducer, humidity transducer or pressure transducer.
3. a kind of electronic expansion valve controls system according to claim 1, is characterized in that: described sensor is wireless senser, and touch screen is wireless touch screen.
4. a kind of electronic expansion valve controls system according to claim 3, it is characterized in that: also comprise the first wireless communication chips, the first wireless communication chips is connected with sensor, touch screen, signal conditioning circuit, power driving circuit and driving device for step-by-step respectively.
5. a kind of electronic expansion valve controls system according to claim 4, it is characterized in that: described signal conditioning circuit comprises the signal switching circuit, signal de-noising circuit and the signal amplification circuit that connect successively, the signal input part of signal switching circuit is connected with the first wireless communication chips, and the signal output part of signal amplification circuit is connected with the signal input part of first microprocessor.
6. a kind of electronic expansion valve controls system according to claim 4, it is characterized in that: described wireless driving device for step-by-step comprises the second wireless communication chips, the second microprocessor, voltage transformation module and motor drive module, second wireless communication chips, voltage transformation module and motor drive module are all connected with the second microprocessor, second wireless communication chips is connected with the first wireless communication chips, motor drive module is provided with motor interface, motor interface is connected with the signal input part of electric expansion valve, and voltage transformation module is provided with power interface.
7. a kind of electronic expansion valve controls system according to claim 6, is characterized in that: described first wireless communication chips and the second wireless communication chips are ZigBee wireless communication chips.
8. a kind of electronic expansion valve controls system according to claim 1, is characterized in that: described power driving circuit is high-voltage great-current darlington transistor array circuit.
9. a kind of electronic expansion valve controls system according to claim 1, is characterized in that: described first microprocessor is single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520349527.5U CN204677850U (en) | 2015-05-27 | 2015-05-27 | A kind of electronic expansion valve controls system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520349527.5U CN204677850U (en) | 2015-05-27 | 2015-05-27 | A kind of electronic expansion valve controls system |
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| Publication Number | Publication Date |
|---|---|
| CN204677850U true CN204677850U (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520349527.5U Expired - Fee Related CN204677850U (en) | 2015-05-27 | 2015-05-27 | A kind of electronic expansion valve controls system |
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| CN (1) | CN204677850U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864152A (en) * | 2015-05-27 | 2015-08-26 | 成都德麦科技有限公司 | Electronic expansion valve control system |
| CN105526398A (en) * | 2016-01-14 | 2016-04-27 | 苏州成科自控设备有限公司 | Control device used for electric actuator of matched valves |
| CN106382405A (en) * | 2016-09-07 | 2017-02-08 | 珠海格力电器股份有限公司 | Driving system and driving method of electronic expansion valve and air conditioner |
| CN106870798A (en) * | 2017-03-23 | 2017-06-20 | 江苏海雷德蒙新能源有限公司 | Novel electronic expansion valve driving equipment |
-
2015
- 2015-05-27 CN CN201520349527.5U patent/CN204677850U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864152A (en) * | 2015-05-27 | 2015-08-26 | 成都德麦科技有限公司 | Electronic expansion valve control system |
| CN105526398A (en) * | 2016-01-14 | 2016-04-27 | 苏州成科自控设备有限公司 | Control device used for electric actuator of matched valves |
| CN106382405A (en) * | 2016-09-07 | 2017-02-08 | 珠海格力电器股份有限公司 | Driving system and driving method of electronic expansion valve and air conditioner |
| CN106870798A (en) * | 2017-03-23 | 2017-06-20 | 江苏海雷德蒙新能源有限公司 | Novel electronic expansion valve driving equipment |
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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: 20150930 Termination date: 20160527 |