CN111707030A - Heat pump control system and method based on visual defrosting - Google Patents
Heat pump control system and method based on visual defrosting Download PDFInfo
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- CN111707030A CN111707030A CN202010503681.9A CN202010503681A CN111707030A CN 111707030 A CN111707030 A CN 111707030A CN 202010503681 A CN202010503681 A CN 202010503681A CN 111707030 A CN111707030 A CN 111707030A
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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
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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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
Abstract
The invention relates to a heat pump control system and method based on visual defrosting, which comprises a camera control device, a controller and a heat pump unit, wherein the camera control device is connected with the controller; the camera shooting control device and the controller are both arranged on the heat pump unit; the camera shooting control device is connected with the controller through a lead, and the controller is connected with the heat pump unit through a lead; the camera shooting control device comprises a photosensitive sensor, a picture acquisition module, a picture analysis module and a control instruction storage module, wherein the picture acquisition module comprises a camera; the image of the heat pump unit evaporator is collected through the camera, then the image is analyzed, whether the unit frosts or not is judged, then the judged signal is sent to the controller, and then the controller performs related control on the unit. The picture of unit is shot through controlling means that makes a video recording, can more audio-visually go and judge whether the unit has frost, combines outdoor ambient temperature and outdoor coil pipe temperature to synthesize simultaneously and judges, can save the resource, promotes heat pump set operating efficiency.
Description
Technical Field
The invention relates to the technical field of heat pump control, in particular to a heat pump control system and method based on visual defrosting.
Background
The heat pump is a high-efficiency energy-saving device which fully utilizes low-grade heat energy, namely a device which converts the low-grade heat energy into high-grade heat energy in an inverse Carnot cycle mode, can obtain larger heat supply amount by only consuming a small amount of electric energy, and can effectively utilize the low-grade heat energy in the air, thereby achieving the purpose of energy conservation.
The existing heat pump water heater frequently has the problems of frequent defrosting, untimely defrosting or incomplete defrosting and defrosting removal in defrosting, so that the heating effect of a unit is poor and the like.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a heat pump control system based on visual defrosting, wherein a control module of the heat pump control system sends a signal to a camera control device by detecting the outdoor environment temperature and the outdoor coil temperature, so that a unit picture is collected every certain time, then whether the unit is frosted or not is judged by analyzing the unit fin picture, then the camera module device feeds the analyzed condition back to the control module, so that relevant control is performed, and when defrosting is performed, the unit picture is collected by the picture collection module to judge whether the frost is completely removed or not, so that whether the unit is to finish defrosting or not is controlled.
The purpose of the invention can be realized by the following technical scheme:
a heat pump control system based on visual defrosting comprises a camera control device, a controller and a heat pump unit; the camera control device and the controller are both arranged on the heat pump unit; the camera shooting control device is connected with the controller through a lead, and the controller is connected with the heat pump unit through a lead.
Furthermore, the camera shooting control device comprises a photosensitive sensor, a picture acquisition module, a picture storage module, a picture analysis module and a control instruction storage module; the picture storage module is connected with the picture acquisition module, the picture analysis module is connected with the picture storage module, and the control instruction storage module is respectively connected with the picture analysis module and the picture acquisition module.
Further, the controller comprises a control module, a detection module, a parameter module and a comparison module; the control module is respectively connected with the detection module, the parameter module, the comparison module and a control instruction storage module in the camera control device; the control module is used for receiving the digital signal of the camera control device, so that whether the unit frosts or not is comprehensively judged together with the outdoor environment temperature and the outdoor coil temperature, and corresponding defrosting control action is performed on the heat pump unit; the detection module is used for detecting various parameters when the heat pump unit operates; the parameter module is used for recording safety parameters of the heat pump unit according to initial performance parameters of the heat pump unit; and the comparison module is used for comparing the data in the detection module and the parameter module and transmitting the comparison result to the control module for processing.
Further, the camera control device further comprises a time recording module; the time recording module is connected with the control instruction storage module and is used for recording the moment of shooting by the heat pump unit.
Preferably, the camera shooting control device further comprises an illumination module, and the illumination module is respectively connected with the photosensitive sensor and the picture acquisition module.
The lighting module is used for enabling the picture acquisition module to be capable of clearly shooting pictures of the unit, and the light source is provided for lighting the unit when the brightness is not good.
Preferably, the image acquisition module comprises a camera.
The detection module comprises an environment temperature sensor and an outdoor coil temperature sensor.
Preferably, the picture storage module comprises a dynamic storage unit and a static storage unit, the static storage unit stores a preset frostless picture, a frostless picture and a semi-frosted picture of the heat pump unit, and the dynamic storage unit stores a picture of the current state of the heat pump unit acquired in real time.
The image storage module is used for storing images of each state of the heat pump unit, the images are stored in the static storage unit, the static storage unit is a fixed address and cannot be automatically deleted, and the images in the dynamic storage unit can be replaced by newly acquired images.
Another object of the present invention is to provide a heat pump control method based on visual defrosting, using the above heat pump control system.
The purpose of the invention can be realized by the following technical scheme:
a heat pump control method based on visual defrosting comprises the following steps:
s1: detecting the state of the heat pump unit through a detection module in the controller, judging whether frosting is possible, sending a command to a camera control device to judge whether a picture acquisition module needs to be triggered, and turning to S2;
s2: the detection module of the controller judges whether the unit has the possibility of frosting by detecting the ambient temperature and the coil temperature, and sends a signal to the camera control device, so that the picture acquisition module is triggered to acquire the picture of the fins of the heat pump unit, then the picture is stored in the picture storage module, and S3 is switched;
s3: comparing the picture of the heat pump unit which is just acquired with pictures of various states of defrosting which are pre-stored in the static storage unit, namely judging the current state of the heat pump unit by comparing through a picture analysis module, then sending a judgment result to a control instruction storage module, and turning to S4;
s4: the control instruction storage module sends the judgment result of the picture analysis module to the controller, and the controller performs corresponding action.
Further, the heat pump control method includes the steps of: s11: detecting the state of the heat pump unit through a detection module, and turning to S12;
s12: if the heat pump unit is in a heating state, if the judgment result is yes, the step is switched to S13, and if the judgment result is no, the step is switched to S18;
s13: if the ambient temperature is lower than T1, if yes, go to S14, if no, go to S18;
s14: if the temperature of the coil is lower than T2, turning to S15 if the judgment result is yes, and turning to S18 if the judgment result is no;
s15: the control module in the controller sends information to the control instruction storage module in the image pickup control device, and the operation goes to S16;
s16: the control instruction storage module sends a picture acquisition signal to the picture acquisition module, and the step is S17;
s17: judging whether the fins of the heat pump unit are frosted or not through the picture analysis module, if so, turning to S18, and if not, turning to S12;
s18: the controller receives the information whether the fins of the heat pump unit frost or not, and then the S19 is switched;
s19: the controller makes corresponding action to the heat pump set according to the corresponding information.
In the heat pump control method, in step S3 or S17, the picture analysis module specifically includes the following steps:
s31, the picture analysis module acquires the picture of the current state of the heat pump unit through the picture storage module, and then S32 is carried out;
s32, the picture analysis module acquires the preset picture information through the picture storage module, and then S33 is carried out;
s33, the picture analysis module judges whether the heat pump unit frosts through comparison, and then S34 is carried out;
and S34, the picture analysis module acquires the picture of the current state of the heat pump unit through the picture storage module.
The invention has the beneficial effects that:
1. the picture of unit is shot through controlling means makes a video recording, can more audio-visually go to judge whether the unit has frost to make the unit have better performance.
2. Whether the heat pump unit frosts or not is comprehensively judged by combining the outdoor environment temperature and the outdoor coil temperature through the picture of the camera shooting control device, resources can be saved, wrong defrosting can be avoided to the greatest extent, and the operation efficiency of the heat pump unit is improved.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a block diagram of a heat pump control system according to the present invention;
FIG. 2 is a block diagram of a part of the structure of the image pickup control apparatus according to the present invention;
FIG. 3 is a flow chart of a heat pump control method of the present invention;
FIG. 4 is a detailed flow chart of a heat pump control method according to the present invention;
FIG. 5 is a flow chart of the picture analysis module of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, a heat pump control system based on visual defrosting includes a camera control device, a controller and a heat pump unit; the camera control device and the controller are both arranged on the heat pump unit; the camera control device is connected with the controller through a lead, and the controller is connected with the heat pump unit through a lead; the camera shooting control device comprises a photosensitive sensor, an illumination module, a picture acquisition module, a picture storage module, a picture analysis module, a control instruction storage module and a time recording module; the photosensitive sensor is connected with the illumination module, and the picture acquisition module is connected with the illumination module; the picture storage module is connected with the picture acquisition module, the picture analysis module is connected with the picture storage module, and the control instruction storage module is respectively connected with the picture analysis module, the picture acquisition module and the time recording module.
The picture acquisition module is used for acquiring a fin picture of the heat pump unit and storing the acquired picture in the picture storage module; the picture storage module is used for sending the latest acquired unit picture to the picture analysis module; the picture analysis module analyzes the acquired latest unit picture and then sends an analysis result to the control instruction storage module; the control instruction storage module is used for receiving the digital command transmitted by the picture analysis module.
The photosensitive sensor is used for distinguishing ambient luminosity and then transmitting a signal to the illumination module, and when the ambient luminosity is poor, the illumination module is started, so that the picture acquisition module can better acquire pictures of the evaporator of the unit; the lighting module can provide a light source when the picture acquisition module needs to take pictures at night or when the ambient luminosity is poor, so that the picture acquisition module can better acquire the pictures of the evaporator of the unit; the picture acquisition module is used for shooting pictures of the evaporator of the heat pump unit so as to analyze the pictures and judge whether the heat pump unit frosts; the picture storage module is used for storing the collected pictures, wherein the pictures can be automatically cleared after a period of time, so that the problem of insufficient memory of the storage module is avoided; the picture analysis module is used for analyzing the acquired picture so as to judge whether the heat pump unit is frosted or not; the control instruction storage module is used for receiving the digital command transmitted by the picture analysis module.
Preferably, the image acquisition module comprises a camera.
The controller comprises a control module, a detection module, a parameter module and a comparison module; the control module is respectively connected with the detection module, the parameter module, the comparison module and a control instruction storage module in the camera control device.
The control module is used for receiving the digital signal of the camera control device, so that whether the heat pump unit frosts or not is comprehensively judged together with the outdoor environment temperature and the outdoor coil temperature, and corresponding defrosting control action is performed on the heat pump unit; the detection module is used for detecting various parameters when the heat pump unit operates; the parameter module is used for recording safety parameters of the heat pump unit according to initial performance parameters of the heat pump unit; and the comparison module is used for comparing the data in the detection module and the parameter module and transmitting the comparison result to the control module for processing. The detection module, the parameter module and the comparison module are all calculated under the control of the control module, and information transmission among the detection module, the parameter module and the comparison module is all carried out through the control module.
The detection module comprises an environment temperature sensor and an outdoor coil temperature sensor.
The during operation, detect current ambient temperature through the ambient temperature sensor among the detection module, detect current outer coil pipe temperature through the outdoor coil pipe temperature sensor among the detection module, when outdoor ambient temperature and outdoor coil pipe temperature are less than a certain value, control module sends the signal and starts camera control device, give picture collection module again through sending the signal, picture collection module receives the signal after, then begin to gather the heat pump set picture, then carry out the analysis with the picture of gathering, judge whether frost has on the heat pump set fin, again feed back the judged result to the controller, the controller combines the result of feedback to carry out relevant processing, then make relevant action.
The camera control device performs relevant actions according to the control module, and can perform relevant actions only when the ambient temperature and the temperature of the coil are lower than certain values.
The control module controls the unit through each operation parameter of the unit and a command set by a user.
Specifically, the picture storage module comprises a dynamic storage unit and a static storage unit, a preset frostless picture, a frostless picture and a semi-frosted picture of the heat pump unit are stored in the static storage unit, and meanwhile, a picture of the current state of the heat pump unit acquired in real time is stored in the dynamic storage unit. The picture analysis module compares the picture of the current state of the heat pump unit with a preset picture of a frostless picture, a frosted picture and a semi-frosted picture of the heat pump unit, judges whether the heat pump unit is frosted or not according to the comparison result, generates an agreed digital command corresponding to the comparison result and transmits the digital command to the control instruction storage module.
When defrosting, the picture of the unit is also collected through the picture collecting module to judge whether the frost is completely removed, so that whether the unit needs to finish a defrosting program is controlled.
Example 2
Referring to fig. 3, a heat pump control method based on visual defrosting includes the following steps:
s1: detecting the state of the heat pump unit through a detection module in the controller, judging whether frosting is possible, sending a command to a camera control device to judge whether a picture acquisition module needs to be triggered, and turning to S2;
s2: the detection module of the controller judges whether the unit has the possibility of frosting by detecting the ambient temperature and the coil temperature, and sends a signal to the camera control device, so that the picture acquisition module is triggered to acquire the picture of the fins of the heat pump unit, then the picture is stored in the picture storage module, and S3 is switched;
s3: comparing the picture of the heat pump unit which is just acquired with pictures of various states of defrosting which are pre-stored in the static storage unit, namely judging the current state of the heat pump unit by comparing through a picture analysis module, then sending a judgment result to a control instruction storage module, and turning to S4;
s4: the control instruction storage module sends the judgment result of the picture analysis module to the controller, and the controller performs corresponding action.
Referring to fig. 4, the specific process is as follows:
s11: detecting the state of the heat pump unit through a detection module, and turning to S12;
s12: if the heat pump unit is in a heating state, if the judgment result is yes, the step is switched to S13, and if the judgment result is no, the step is switched to S18;
s13: if the ambient temperature is lower than T1, if yes, go to S14, if no, go to S18;
s14: if the temperature of the coil is lower than T2, turning to S15 if the judgment result is yes, and turning to S18 if the judgment result is no;
s15: the control module in the controller sends information to the control instruction storage module in the image pickup control device, and the operation goes to S16;
s16: the control instruction storage module sends a picture acquisition signal to the picture acquisition module, and the step is S17;
s17: judging whether the fins of the heat pump unit are frosted or not through the picture analysis module, if so, turning to S18, and if not, turning to S12;
s18: the controller receives the information whether the fins of the heat pump unit frost or not, and then the S19 is switched;
s19: the controller makes corresponding action to the heat pump set according to the corresponding information.
When the steps S12, S13, and S14 are shifted to step S18, it is described that the heat pump unit fins are not frosted, and no defrosting operation is required in step S19, when the steps S17 are shifted to step S18, it is described that the heat pump unit fins are frosted, a defrosting program needs to be started in step S19, the controller performs corresponding parameter setting on the heat pump unit according to information that the defrosting program needs to be started, the parameter setting of the heat pump unit in the defrosting program belongs to common general knowledge in the art, and is not a technical scheme protected by the present invention, and the present invention is not described herein again.
The settings of the T1 and T2 defrost temperatures are a matter of routine choice for one skilled in the art, preferably, T1 is set to 5 ℃ and T2 is set to 0 ℃.
Referring to fig. 5, in step S3 or S17, the picture analysis module includes the following steps:
s31, the picture analysis module acquires the picture of the current state of the heat pump unit through the picture storage module, and then S32 is carried out;
s32, the picture analysis module acquires the preset picture information through the picture storage module, and then S33 is carried out;
s33, the picture analysis module judges whether the heat pump unit frosts through comparison, and then S34 is carried out;
and S34, the picture analysis module acquires the picture of the current state of the heat pump unit through the picture storage module.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (10)
1. A heat pump control system based on visual defrosting is characterized by comprising a camera control device, a controller and a heat pump unit; the camera control device and the controller are both arranged on the heat pump unit; the camera shooting control device is connected with the controller through a lead, and the controller is connected with the heat pump unit through a lead.
2. The heat pump control system based on visual defrosting according to claim 1, wherein the camera control device comprises a photosensitive sensor, a picture acquisition module, a picture storage module, a picture analysis module and a control instruction storage module; the picture storage module is connected with the picture acquisition module, the picture analysis module is connected with the picture storage module, and the control instruction storage module is respectively connected with the picture analysis module and the picture acquisition module.
3. The vision defrost based heat pump control system of claim 2 wherein said controller includes a control module, a detection module, a parameter module, and a comparison module; the control module is respectively connected with the detection module, the parameter module, the comparison module and a control instruction storage module in the camera control device; the control module is used for receiving the digital signal of the camera control device, so that whether the unit frosts or not is comprehensively judged together with the outdoor environment temperature and the outdoor coil temperature, and corresponding defrosting control action is performed on the heat pump unit; the detection module is used for detecting various parameters when the heat pump unit operates; the parameter module is used for recording safety parameters of the heat pump unit according to initial performance parameters of the heat pump unit; and the comparison module is used for comparing the data in the detection module and the parameter module and transmitting the comparison result to the control module for processing.
4. The heat pump control system based on visual defrosting according to claim 2, characterized in that the camera control device further comprises a time recording module; the time recording module is connected with the control instruction storage module and is used for recording the moment of shooting by the heat pump unit.
5. The heat pump control system based on visual defrosting according to claim 2, wherein the camera control device further comprises an illumination module, and the illumination module is respectively connected with the photosensitive sensor and the picture acquisition module.
6. The visual defrost-based heat pump control system of claim 2 wherein said picture acquisition module includes a camera.
7. The heat pump control system based on visual defrosting according to claim 2, wherein the picture storage module comprises a dynamic storage unit and a static storage unit, the static storage unit stores therein a preset picture of no frost, a picture of frost and a picture of semi-frost state of the heat pump unit, and the dynamic storage unit stores therein a picture of the current state of the heat pump unit obtained in real time.
8. A heat pump control method based on visual defrosting, which uses the heat pump control system of the above claims 1-7, characterized in that the control method comprises the following steps:
s1: detecting the state of the heat pump unit through a detection module in the controller, judging whether frosting is possible, sending a command to a camera control device to judge whether a picture acquisition module needs to be triggered, and turning to S2;
s2: the detection module of the controller judges whether the unit has the possibility of frosting by detecting the ambient temperature and the coil temperature, and sends a signal to the camera control device, so that the picture acquisition module is triggered to acquire the picture of the fins of the heat pump unit, then the picture is stored in the picture storage module, and S3 is switched;
s3: comparing the picture of the heat pump unit which is just acquired with pictures of various states of defrosting which are pre-stored in the static storage unit, namely judging the current state of the heat pump unit by comparing through a picture analysis module, then sending a judgment result to a control instruction storage module, and turning to S4;
s4: the control instruction storage module sends the judgment result of the picture analysis module to the controller, and the controller performs corresponding action.
9. The heat pump control method according to claim 8, characterized by comprising the steps of: s11: detecting the state of the heat pump unit through a detection module, and turning to S12;
s12: if the heat pump unit is in a heating state, if the judgment result is yes, the step is switched to S13, and if the judgment result is no, the step is switched to S18;
s13: if the outdoor environment temperature is lower than T1, turning to S14 if the judgment result is yes, and turning to S18 if the judgment result is no;
s14: if the temperature of the coil is lower than T2, turning to S15 if the judgment result is yes, and turning to S18 if the judgment result is no;
s15: the control module in the controller sends information to the control instruction storage module in the image pickup control device, and the operation goes to S16;
s16: the control instruction storage module sends a picture acquisition signal to the picture acquisition module, and the step is S17;
s17: judging whether the fins of the heat pump unit are frosted or not through the picture analysis module, if so, turning to S18, and if not, turning to S12;
s18: the controller receives the information whether the fins of the heat pump unit frost or not, and then the S19 is switched;
s19: the controller makes corresponding action to the heat pump set according to the corresponding information.
10. The heat pump control method according to claim 8, wherein in step S3 or S17, the picture analysis module comprises the following steps:
s31, the picture analysis module acquires the picture of the current state of the heat pump unit through the picture storage module, and then S32 is carried out;
s32, the picture analysis module acquires the preset picture information through the picture storage module, and then S33 is carried out;
s33, the picture analysis module judges whether the heat pump unit frosts through comparison, and then S34 is carried out;
and S34, the picture analysis module acquires the picture of the current state of the heat pump unit through the picture storage module.
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Application publication date: 20200925 |
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