CN104864152A - Electronic expansion valve control system - Google Patents
Electronic expansion valve control system Download PDFInfo
- Publication number
- CN104864152A CN104864152A CN201510276794.9A CN201510276794A CN104864152A CN 104864152 A CN104864152 A CN 104864152A CN 201510276794 A CN201510276794 A CN 201510276794A CN 104864152 A CN104864152 A CN 104864152A
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- Prior art keywords
- signal
- expansion valve
- circuit
- electronic expansion
- wireless communication
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an electronic expansion valve control system. The electronic expansion valve control system comprises at least one sensor, a touch screen, a signal conditioning circuit, a first microprocessor, a power driving circuit and a step motor driving device, wherein both the signal output end of the sensor and the signal output end of the touch screen are connected with the signal input end of the signal conditioning circuit, the signal output end of the signal conditioning circuit is connected with the signal input end of the first microprocessor, the signal input end of the first microprocessor is connected with the signal input end of the power driving circuit, the signal output end of the power driving circuit is connected with the signal input end of the step motor driving device, and the signal output end of the step motor driving device is connected with the signal input end of an electronic expansion valve. The electronic expansion valve control system is simple in structure, and accurate control over the electronic expansion valve can be achieved.
Description
Technical field
The present invention relates to control technique field, particularly relate 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.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of electronic expansion valve controls system, structure is simple, can realize the accurate control to electric expansion valve.
The object of the invention is to be 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 invention has the beneficial effects as follows:
(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 electronic expansion valve controls system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technological scheme of the present invention is described in further detail, but protection scope of the present invention 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 |
|---|---|---|---|
| CN201510276794.9A CN104864152A (en) | 2015-05-27 | 2015-05-27 | Electronic expansion valve control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510276794.9A CN104864152A (en) | 2015-05-27 | 2015-05-27 | Electronic expansion valve control system |
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| Publication Number | Publication Date |
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| CN104864152A true CN104864152A (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510276794.9A Pending CN104864152A (en) | 2015-05-27 | 2015-05-27 | Electronic expansion valve control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (6)
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|---|---|---|---|---|
| JPH10103559A (en) * | 1996-09-27 | 1998-04-21 | Mitsubishi Electric Corp | Driving circuit for electronic expansion valve |
| CN101839768A (en) * | 2010-05-14 | 2010-09-22 | 浙江工业大学 | Portable fiber-optic spectrometer based on CPLD and LABVIEW |
| CN101900464A (en) * | 2009-05-27 | 2010-12-01 | 江森自控楼宇设备科技(无锡)有限公司 | Control system of electronic expansion valve |
| CN103115182A (en) * | 2011-11-16 | 2013-05-22 | 杭州三花研究院有限公司 | Electronic expansion valve |
| CN204063466U (en) * | 2014-10-24 | 2014-12-31 | 刘子曼 | Air-conditioner control system |
| CN204677850U (en) * | 2015-05-27 | 2015-09-30 | 成都德麦科技有限公司 | A kind of electronic expansion valve controls system |
-
2015
- 2015-05-27 CN CN201510276794.9A patent/CN104864152A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10103559A (en) * | 1996-09-27 | 1998-04-21 | Mitsubishi Electric Corp | Driving circuit for electronic expansion valve |
| CN101900464A (en) * | 2009-05-27 | 2010-12-01 | 江森自控楼宇设备科技(无锡)有限公司 | Control system of electronic expansion valve |
| CN101839768A (en) * | 2010-05-14 | 2010-09-22 | 浙江工业大学 | Portable fiber-optic spectrometer based on CPLD and LABVIEW |
| CN103115182A (en) * | 2011-11-16 | 2013-05-22 | 杭州三花研究院有限公司 | Electronic expansion valve |
| CN204063466U (en) * | 2014-10-24 | 2014-12-31 | 刘子曼 | Air-conditioner control system |
| CN204677850U (en) * | 2015-05-27 | 2015-09-30 | 成都德麦科技有限公司 | A kind of electronic expansion valve controls system |
Non-Patent Citations (1)
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| 徐兰英: "《现代传感与检测技术》", 30 April 2015 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Application publication date: 20150826 |