CN106949675A - A kind of electronic expansion valve controls signal supervisory instrument - Google Patents
A kind of electronic expansion valve controls signal supervisory instrument Download PDFInfo
- Publication number
- CN106949675A CN106949675A CN201710217724.5A CN201710217724A CN106949675A CN 106949675 A CN106949675 A CN 106949675A CN 201710217724 A CN201710217724 A CN 201710217724A CN 106949675 A CN106949675 A CN 106949675A
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- Prior art keywords
- expansion valve
- signal
- electronic expansion
- valve controls
- electric expansion
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- 238000005070 sampling Methods 0.000 claims abstract description 36
- 238000002955 isolation Methods 0.000 claims abstract description 33
- 238000012545 processing Methods 0.000 claims abstract description 29
- 238000004891 communication Methods 0.000 claims description 19
- 238000001514 detection method Methods 0.000 abstract description 23
- 238000012360 testing method Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012421 spiking Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/005—Arrangement or mounting of control or safety devices of safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention discloses a kind of electronic expansion valve controls signal supervisory instrument, including：First electric expansion valve interface, second electric expansion valve interface, signal isolation and signal follow module, signal sampling module and signal processing module, the electronic expansion valve controls signal of electric expansion valve driving interface output, through the first electric expansion valve interface, signal isolation and signal follow module, exported respectively to signal sampling module and the second electric expansion valve interface, due to following module to be isolated by signal isolation and signal between signal sampling module and the second electric expansion valve interface, therefore, make detection means when gathering the electronic expansion valve controls signal of electric expansion valve driving interface output, the interference signal that is produced when its sampled signal is no longer by electronic expansion valve events is disturbed, so as to substantially increase the reliability of sampled signal, and then ensure that the reliability of detection means testing result.
Description
Technical field
The present invention relates to electronic expansion valve technology field, in particular, it is related to a kind of electronic expansion valve controls signal inspection
Survey device.
Background technology
Electric expansion valve is a kind of new throttling arrangement, and it has adapted to the demand for development of refrigeration electromechanical integration, is realized
Microcomputer directly controls and adjusted kind of refrigeration cycle, with the incomparable good characteristic of heating power expansion valve, is the intelligence of refrigeration system
Energyization control provides condition, is a kind of rising auto-control energy-saving element.
At present, to the control of electric expansion valve, pulse signal is mainly sent to electric expansion valve by air-conditioner controller
Mode realizes that the pulse signal that electric expansion valve is sent according to air-conditioner controller is acted accordingly.When air-conditioner is in production
When product exploitation, experiment and after-sales service stage, it is necessary to which the action situation (i.e. pulse step number) to electric expansion valve is examined
Survey.Conventional detection method is：The sampling pin of electronic expansion valve detection device is parallel to the interface end of electric expansion valve, passed through
Collection air-conditioner controller is sent to the electronic expansion valve controls signal of electric expansion valve (i.e. pulse signal), is realized to electronic expansion
The detection of the pulse step number of valve.
Because the interface end of electric expansion valve is directly connected with the electric expansion valve driving interface of air-conditioner controller, and electronics
Expansion valve is a kind of inductive element again, therefore, and when detection means, to gather the electronics that air-conditioner controller sent to electric expansion valve swollen
During swollen valve control signal, exist the interference signal that its sampled signal collected can be produced when electronic expansion valve events larger
When error, such as control signal are square-wave signal, as shown in figure 1, the square-wave signal collected can be because of the presence of interference signal
Produce some spikings as shown in Fig. 2 also, electric expansion valve use time it is longer, its produce interference signal it is more,
The sampled signal error for causing detection means to collect is bigger.
The content of the invention
In view of this, the present invention discloses a kind of electronic expansion valve controls signal supervisory instrument, to realize that detection means is being adopted
During the electronic expansion valve controls signal of set electron expansion valve driving interface output, its sampled signal is no longer by electronic expansion valve events
When the interference of interference signal that produces, so as to greatly improve the reliability of sampled signal, and then ensure detection means testing result
Reliability.
A kind of electronic expansion valve controls signal supervisory instrument, including：
First electric expansion valve interface, the electric expansion valve driving of the first electric expansion valve interface and air-conditioner controller
Interface is adapted, the electronic expansion valve controls signal for receiving the electric expansion valve driving interface output；
The second electric expansion valve interface being adapted with the interface end of electric expansion valve；
Signal isolation and signal follow module, and the signal isolation and signal follow the input and the described first electricity of module
Sub- expansion valve interface connection, the signal isolation and signal follow the first output end of module and second electric expansion valve to connect
The electronics that mouth connection, the signal isolation and signal follow module to be used to export the first electric expansion valve interface is swollen
Swollen valve control signal, is exported in the form of one to one to the second electric expansion valve interface, to drive and second electronics
The electric expansion valve of expansion valve interface connection；
Signal sampling module, the input of the signal sampling module and the signal isolation and signal follow the of module
Two output ends are connected, the electronic expansion valve controls signal for gathering the second output end output；
Signal processing module, the input of the signal processing module is connected with the output end of the signal sampling module,
The electronic expansion valve controls signal for receiving the signal sampling module output, by the electronic expansion valve controls signal
The pulse step number of corresponding electric expansion valve is converted into, and is exported.
It is preferred that, the signal processing module is additionally operable to：
After the electronic expansion valve controls signal that the signal sampling module output is received in first time, start timer；
And when the timer reaches preset time, the electric expansion valve of the signal sampling module output is received again
Control signal；
Whether the electronic expansion valve controls signal received more twice is consistent；
If the electronic expansion valve controls signal received twice is consistent, consistent electronic expansion valve controls will be received twice and are believed
Number the pulse step number of corresponding electric expansion valve is converted into, and exported.
It is preferred that, the signal processing module is additionally operable to：
If the electronic expansion valve controls signal received twice is inconsistent, the electronic expansion valve controls letter received twice is judged
With the presence or absence of the electronic expansion valve controls signal for meeting preparatory condition in number；
If in the presence of the electronic expansion valve controls signal for meeting the preparatory condition is converted into corresponding electronic expansion
The pulse step number of valve, and export；
If being not present, two electronic expansion valve controls signals are given up.
It is preferred that, if in the presence of the electronic expansion valve controls signal for meeting the preparatory condition, the signal processing module is also
For：
Give up the electronic expansion valve controls signal for not meeting the preparatory condition.
It is preferred that, if two electronic expansion valve controls signals do not meet the preparatory condition, the signal processing module
It is additionally operable to：
The electronic expansion valve controls signal of the signal sampling module output is received again.
It is preferred that, also include：
The communication module being connected with the output end of the signal processing module, the communication module is used to receive the signal
Processing module the pulse step number of the electric expansion valve is changed according to preset protocol after data, and by the data output extremely
The equipment of pre-association.
It is preferred that, the communication module includes：Wireless communication module.
It is preferred that, the communication module includes：Wire communication module.
It is preferred that, the signal processing module includes：Single-chip microcomputer.
Knowable to above-mentioned technical scheme, the invention discloses a kind of electronic expansion valve controls signal supervisory instrument, including：
First electric expansion valve interface, the second electric expansion valve interface, signal isolation and signal follow module, signal sampling module and letter
Number processing module, the electronic expansion valve controls signal of electric expansion valve driving interface output, through the first electric expansion valve interface, letter
Number isolation and signal follow module, exported respectively to signal sampling module and the second electric expansion valve interface, because signal is adopted
Follow module to be isolated by signal isolation and signal between egf block and the second electric expansion valve interface, therefore, make detection
Device is when gathering the electronic expansion valve controls signal of electric expansion valve driving interface output, and its sampled signal is no longer swollen by electronics
The interference of the interference signal produced during swollen valve events, so as to substantially increase the reliability of sampled signal, and then ensure that detection
The reliability of device testing result.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
Disclosed accompanying drawing obtains other accompanying drawings.
Fig. 1 is the oscillogram of regular block signal；
Fig. 2 is the oscillogram of the square-wave signal after being disturbed；
Fig. 3 is a kind of structural representation of electronic expansion valve controls signal supervisory instrument disclosed in the embodiment of the present invention；
Fig. 4 is the structural representation of another electronic expansion valve controls signal supervisory instrument disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The embodiment of the invention discloses a kind of electronic expansion valve controls signal supervisory instrument, to realize detection means in collection
During the electronic expansion valve controls signal of electric expansion valve driving interface output, when its sampled signal is no longer by electronic expansion valve events
The interference of the interference signal of generation, so as to greatly improve the reliability of sampled signal, and then ensures detection means testing result
Reliability.
Referring to Fig. 3, a kind of structural representation of electronic expansion valve controls signal supervisory instrument disclosed in the embodiment of the present invention,
The detection means includes：First electric expansion valve interface 11, the second electric expansion valve interface 12, signal isolation and signal follow mould
Block 13, signal sampling module 14 and signal processing module 15；
Wherein：
First electric expansion valve interface 11 is adapted with the electric expansion valve driving interface 10 of air-conditioner controller, for exporting
The electronic expansion valve controls signal that electric expansion valve driving interface 10 is exported.
Second electric expansion valve interface 12 is adapted with the interface end of electric expansion valve 20.
In traditional scheme, interface end of the electric expansion valve driving interface 10 directly with electric expansion valve 20 is connected, and works as detection
When device collection air-conditioner controller is sent to the electronic expansion valve controls signal of electric expansion valve, its sampled signal meeting collected
There is larger error the interference signal produced when electronic expansion valve events.
The present invention discloses to avoid the error that the interference signal produced during electronic expansion valve events is brought to sampled signal
A kind of detection means, the detection means has the first electric expansion valve interface being adapted with electric expansion valve driving interface 10
11, and the second electric expansion valve interface 12 being adapted with the interface end of electric expansion valve 20, so, filled when using the detection
Collection air-conditioner controller is put when sending to the electronic expansion valve controls signal of electric expansion valve, only the electricity of air-conditioner controller need to be disconnected
Signal wire (see the dotted line in Fig. 3) between sub- expansion valve driving interface 10 and electric expansion valve 20, electric expansion valve is driven
Interface 10 is connected with the first electric expansion valve interface 11, by the interface end of electric expansion valve 20 and the second electric expansion valve interface
12 are connected, by detection means as the connection member between electric expansion valve driving interface 10 and electric expansion valve 20, realize
Connection between electric expansion valve driving interface 10 and electric expansion valve 20 is converted into being indirectly connected with by being directly connected to.
Signal isolation and signal follow the input of module 13 to be connected with the first electric expansion valve interface 11, the letter
Number isolation and signal follow the first output end of module 13 to be connected with the second electric expansion valve interface 12, signal isolation and letter
Number following module 13 is used for the electronic expansion valve controls signal for exporting the first electric expansion valve interface 11, with a ratio
One form is exported to the second electric expansion valve interface 12, to drive what is be connected with the second electric expansion valve interface 12
Electric expansion valve 20.
It should be noted that electronic expansion valve controls signal is specifically included：Voltage signal and current signal, different electronics
Voltage signal needed for expansion valve 20 is different with current signal, in the present embodiment, and signal isolation and signal follow the module 13 can also
The need for the electric expansion valve 20 that enough bases are connected, corresponding adjustment output to the voltage signal and electric current of electric expansion valve 20 is believed
Number.
The input of signal sampling module 14 follows the second output end of module 13 to be connected with the signal isolation and signal,
The electronic expansion valve controls signal for gathering the second output end output.
Specifically, signal isolation and signal follow module 13 to be followed with signal isolation and signal in function, the present embodiment,
Signal isolation and signal follow module 13 to be mainly used in exporting the first electric expansion valve interface 11 to the second electric expansion valve and connect
The electronic expansion valve controls signal of mouth 12, is exported to the electronic expansion of signal sampling module 14 with the first electric expansion valve interface 11
Valve control signal is isolated, so that signal sampling module 14 is when gathering electronic expansion valve controls signal, it is no longer swollen by electronics
The interference for the interference signal that swollen valve 20 is produced when acting, it is ensured that the reliability of the electronic expansion valve controls signal gathered.
It should be noted that the present invention is realizes signal sampling module 14 when gathering electronic expansion valve controls signal, no
The interference signal produced when being acted again by electric expansion valve 20 is disturbed, in actual applications, by the defeated of signal sampling module 14
Enter end follows the front-end circuit of module 13 to be connected with signal isolation and signal, by the input of the second electric expansion valve interface 12 and
Signal isolation and signal follow the back-end circuit of module 13 to connect.
The input of signal processing module 15 is connected with the output end of the signal sampling module 14, for receiving the letter
The electronic expansion valve controls signal that number sampling module 14 is exported, the electronic expansion valve controls signal is converted into corresponding
Electric expansion valve pulse step number, and export.
It is preferred that, signal processing module 15 includes：Single-chip microcomputer.
For convenience of understanding, the invention also discloses the application method of electronic expansion valve controls signal supervisory instrument, specifically such as
Under：
1) signal wire between the electric expansion valve driving interface 10 and electric expansion valve 20 of air-conditioner controller is disconnected (see figure
Dotted line in 3)；
2) electric expansion valve driving interface 10 is connected with the first electric expansion valve interface 11, by electric expansion valve 20
Interface end is connected with the second electric expansion valve interface 12；
3) after electricity on air-conditioner set, the electric expansion valve driving interface 10 that the power supply of air-conditioner set passes through air-conditioner controller
Powered for detection means, detection means obtains electric, and enter SBR afterwards in preset time (such as 100ms)；
4) air-conditioner controller is exported after electronic expansion valve controls signal by electric expansion valve driving interface 10, electronic expansion
Valve control signal is sent to signal isolation by the first electric expansion valve interface 11 and signal follows the input of module 13, this
When, signal sampling module 14 is triggered, and starts collection signal isolation and signal in real time and follows the electric expansion valve that module 13 is exported
Control signal, and send the electronic expansion valve controls signal of collection to signal processing module 15；
5) at the same time, signal isolation and signal follow module 13 by electronic expansion valve controls signal, with one to one shape
Formula is exported to the second electric expansion valve interface 12, synchronously to drive the electricity being connected with the second electric expansion valve interface 12
Sub- expansion valve 20.
In summary, the invention discloses a kind of electronic expansion valve controls signal supervisory instrument, including：First electronic expansion
Valve interface 11, the second electric expansion valve interface 12, signal isolation and signal are followed at module 13, signal sampling module 14 and signal
Manage module 15, electric expansion valve driving interface 10 export electronic expansion valve controls signal, through the first electric expansion valve interface 11,
Signal isolation and signal follow module 13, are exported respectively to the electric expansion valve interface 12 of signal sampling module 14 and second, by
Between the electric expansion valve interface 12 of signal sampling module 14 and second by signal isolation and signal follow module 13 carried out every
From, therefore, make detection means gather electric expansion valve driving interface 10 export electronic expansion valve controls signal when, its sample
The interference signal that signal is produced when no longer being acted by electric expansion valve 20 is disturbed, so as to substantially increase the reliability of sampled signal
Property, and then ensure that the reliability of detection means testing result.
To prevent the delay false triggering of electronic expansion valve controls signal, it is ensured that the electric expansion valve that signal processing module 15 is obtained
The accuracy of control signal, signal processing module 15 is after first time collection electronic expansion valve controls signal, during by one section
Between delay, can also carry out second of sampling.
Therefore, it is further to optimize above-described embodiment, signal processing module 15 is additionally operable to：
Received in first time after the electronic expansion valve controls signal that the signal sampling module 14 is exported, start timing
Device；
And when the timer reaches preset time, the electric expansion valve of the signal sampling module output is received again
Control signal；
Wherein, the concrete numerical value of preset time period is according to depending on being actually needed.
Whether the electronic expansion valve controls signal received more twice is consistent；
If the electronic expansion valve controls signal received twice is consistent, consistent electronic expansion valve controls will be received twice and are believed
Number the pulse step number of corresponding electric expansion valve 20 is converted into, and exported.
It is understood that the electronic expansion valve controls signal that ought be received twice is consistent, then show the electric expansion valve
Control signal is useful signal, in this case, and the electronic expansion valve controls signal is converted into corresponding electric expansion valve
20 pulse step number, and export.
When the electronic expansion valve controls signal for judging to receive twice is inconsistent, signal processing module 15 is additionally operable to：
Judge in the electronic expansion valve controls signal received twice with the presence or absence of the electric expansion valve control for meeting preparatory condition
Signal processed；
Wherein, preparatory condition refers to that normal electrical expands the characteristic condition of valve control signal, such as when normal electrical expansion
When valve control signal is square-wave signal, preparatory condition can be：Sampled signal is that the high level of square wave and the square wave is smooth straight
Line.
If in the presence of the electronic expansion valve controls signal for meeting the preparatory condition is converted into corresponding electronic expansion
The pulse step number of valve 20, and export, while giving up the electronic expansion valve controls signal for not meeting the preparatory condition；
If being not present, two electronic expansion valve controls signals are given up, and receive the signal sampling module again
The electronic expansion valve controls signal of output.
The pulse step number of electric expansion valve 20 is checked for the convenience of the user, is determined the action sequence of electric expansion valve 20, is worked as letter
Number processing module 15 is handled after the pulse step number for obtaining electric expansion valve 20, can also be exported the pulse step number to relevant device.
Referring to Fig. 4, a kind of structure of electronic expansion valve controls signal supervisory instrument is shown disclosed in another embodiment of the present invention
It is intended to, on the basis of embodiment illustrated in fig. 3, also includes：Communication module 16；
Communication module 16 is connected with the output end of the signal processing module 15, for receiving the signal processing module 15
Data after the pulse step number of the electric expansion valve is changed according to preset protocol, and by the data output to pre-association
Equipment.
Wherein, the equipment of the pre-association of communication module 16 can be mobile terminal, such as mobile phone.
Specifically, when the pulse step number of the electric expansion valve is converted into phase by signal processing module 15 according to preset protocol
After the data answered, signal processing module 15 sends the data after conversion to the mobile terminal of pre-association by communication module 16,
So, user can check the action sequence of electric expansion valve by the corresponding monitoring of software of mobile terminal or APP.
Communication module 16 can be wireless communication module, or wire communication module.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include that
A little key elements, but also other key elements including being not expressly set out, or also include be this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except also there is other identical element in the process including the key element, method, article or equipment.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (9)
1. a kind of electronic expansion valve controls signal supervisory instrument, it is characterised in that including：
First electric expansion valve interface, the electric expansion valve driving interface of the first electric expansion valve interface and air-conditioner controller
It is adapted, the electronic expansion valve controls signal for receiving the electric expansion valve driving interface output；
The second electric expansion valve interface being adapted with the interface end of electric expansion valve；
Signal isolation and signal follow module, and the signal isolation and signal follow the input and first electronics of module swollen
Swollen valve interface connection, the signal isolation and signal follow the first output end of module and the second electric expansion valve interface to connect
Connect, the signal isolation and signal follow the module to be used for the electric expansion valve for exporting the first electric expansion valve interface
Control signal, is exported in the form of one to one to the second electric expansion valve interface, to drive and second electronic expansion
The electric expansion valve of valve interface connection；
Signal sampling module, input and the signal isolation and signal of the signal sampling module follow the second defeated of module
Go out end connection, the electronic expansion valve controls signal for gathering the second output end output；
Signal processing module, the input of the signal processing module is connected with the output end of the signal sampling module, is used for
The electronic expansion valve controls signal of the signal sampling module output is received, the electronic expansion valve controls signal is changed
Into the pulse step number of corresponding electric expansion valve, and export.
2. electronic expansion valve controls signal supervisory instrument according to claim 1, it is characterised in that the signal transacting mould
Block is additionally operable to：
After the electronic expansion valve controls signal that the signal sampling module output is received in first time, start timer；
And when the timer reaches preset time, the electronic expansion valve controls of the signal sampling module output are received again
Signal；
Whether the electronic expansion valve controls signal received more twice is consistent；
If the electronic expansion valve controls signal received twice is consistent, the electronic expansion valve controls signal for receiving consistent twice is turned
Change the pulse step number of corresponding electric expansion valve into, and export.
3. electronic expansion valve controls signal supervisory instrument according to claim 2, it is characterised in that the signal transacting mould
Block is additionally operable to：
If the electronic expansion valve controls signal received twice is inconsistent, judge in the electronic expansion valve controls signal that receives twice
With the presence or absence of the electronic expansion valve controls signal for meeting preparatory condition；
If in the presence of the electronic expansion valve controls signal for meeting the preparatory condition is converted into corresponding electric expansion valve
Pulse step number, and export；
If being not present, two electronic expansion valve controls signals are given up.
4. electronic expansion valve controls signal supervisory instrument according to claim 3, it is characterised in that if described in the presence of meeting
The electronic expansion valve controls signal of preparatory condition, the signal processing module is additionally operable to：
Give up the electronic expansion valve controls signal for not meeting the preparatory condition.
5. electronic expansion valve controls signal supervisory instrument according to claim 3, it is characterised in that if two electronic expansions
Valve control signal does not meet the preparatory condition, and the signal processing module is additionally operable to：
The electronic expansion valve controls signal of the signal sampling module output is received again.
6. electronic expansion valve controls signal supervisory instrument according to claim 1, it is characterised in that also include：
The communication module being connected with the output end of the signal processing module, the communication module is used to receive the signal transacting
Module the pulse step number of the electric expansion valve is changed according to preset protocol after data, and by the data output to pre- pass
The equipment of connection.
7. electronic expansion valve controls signal supervisory instrument according to claim 6, it is characterised in that the communication module bag
Include：Wireless communication module.
8. electronic expansion valve controls signal supervisory instrument according to claim 6, it is characterised in that the communication module bag
Include：Wire communication module.
9. electronic expansion valve controls signal supervisory instrument according to claim 1, it is characterised in that the signal transacting mould
Block includes：Single-chip microcomputer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710217724.5A CN106949675A (en) | 2017-04-05 | 2017-04-05 | A kind of electronic expansion valve controls signal supervisory instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710217724.5A CN106949675A (en) | 2017-04-05 | 2017-04-05 | A kind of electronic expansion valve controls signal supervisory instrument |
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| JPS6457054A (en) * | 1987-08-28 | 1989-03-03 | Nippon Denso Co | Controller for refrigeration cycle |
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Application publication date: 20170714 |