CN107514860A - A kind of condenser type refrigerator coagulates white sensor detection circuit - Google Patents
A kind of condenser type refrigerator coagulates white sensor detection circuit Download PDFInfo
- Publication number
- CN107514860A CN107514860A CN201710797917.2A CN201710797917A CN107514860A CN 107514860 A CN107514860 A CN 107514860A CN 201710797917 A CN201710797917 A CN 201710797917A CN 107514860 A CN107514860 A CN 107514860A
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- Prior art keywords
- circuits
- cdc
- refrigerator
- detection circuit
- mcu
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Links
- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 230000003071 parasitic effect Effects 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/02—Detecting the presence of frost or condensate
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/11—Sensor to detect if defrost is necessary
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a kind of condenser type refrigerator to coagulate white sensor detection circuit, the detection circuit includes CDC chip detecting circuits and MCU process circuits, the CDC chip detecting circuits, refrigerator is integrated in coagulate in the aluminum hull of electric capacity front end of white sensor, the MCU process circuits, in line end USB public affairs shells, and CDC chip detecting circuits are connected to MCU process circuits.The present invention can solve the problems, such as that above-mentioned conventional condenser is coagulated white sensor detection circuit and existed, both the cooperation detection of multiple sensors can have been carried out simultaneously in refrigerator, the influence that refrigerator environment factor detects to single sensor capacitance can be reduced again, enhance the stability of sensor, anti-interference, and improve the sensitivity of sensor.
Description
Technical field
The invention belongs to refrigerator to coagulate white detection technique field, the protection device and method of more particularly to easy frosting equipment.
Background technology
In the application field of domestic refrigerator, the evaporator for refrigeration is during work, the condenser pipe on evaporator
Be easy to frosting with fin, frost evaporator surface attachment it is serious have impact on refrigerating efficiency.
Refrigerator removes the frost of evaporator surface by being timed heating to evaporator.But the solidifying white speed and use of refrigerator
Family has very big relation, such as the time of frequent switch gate to the use habit of refrigerator, frequency, the quantity of food deposited in refrigerator and
Food species etc..Therefore problem existing for timing defrost be not according to the thickness of frosting come ' intelligence ' defrost, but according to
Time assesses whether to need defrost, and this defrost mechanism increases the power consumption of refrigerator, wastes electric energy.Therefore evaporator in refrigerator
The Thickness sensitivity for coagulating frost is imperative.Under normal circumstances, condenser type, which coagulates white sensor, is realized based on parallel plate capacitor principle,
It is whether solidifying white and solidifying white on evaporator to detect using the difference of air and white dielectric constant between parallel-plate positive and negative electrode piece
Thickness.
In existing technology, traditional condenser type coagulates white sensor detection circuit, and one kind is by CDC (Capacitance
To Digital Converter) chip and MCU process circuits be integrated in sensor side, and it is made of one, exports evaporimeter frosting
Thickness information is transferred to the master control borad of refrigerator.One I/0 interface of master control borad that the shortcomings that circuit essentially consists in refrigerator can only connect
One condenser type coagulates white sensor, and when the I/O mouth resource-constraineds of refrigerator master control, and the evaporator of refrigerator need to connect multiple condenser types and coagulate
During white sensor synergism detection, the structure is just no longer applicable.The solidifying frost detection circuit of another condenser type is by CDC chips and MCU
Process circuit is all placed in sensor line end, and front-end detection electric capacity separates.The shortcomings that circuit, essentially consists in front end electric capacity and CDC
Lead between chip can introduce very big parasitic capacitance, and cause sensor be easy to due to refrigerator work environment etc. because
Element, very big parasitic capacitance is introduced, so as to influence the accuracy and stability that sensor coagulates frost thickness detection.
The content of the invention
Based on this, therefore the primary mesh of the present invention be to provide a kind of condenser type refrigerator and coagulate white sensor detection circuit, should
Circuit can solve the problems, such as that above-mentioned conventional condenser is coagulated white sensor detection circuit and existed, and can both be carried out simultaneously in refrigerator
The cooperation detection of multiple sensors, the influence that refrigerator environment factor detects to single sensor capacitance can be reduced again, enhanced
The stability of sensor, anti-interference, and improve the sensitivity of sensor.
It is that providing a kind of condenser type refrigerator coagulates white sensor detection circuit, the circuit structure another mesh of the present invention
Simply, it is easy to accomplish, multiple condenser types can be connected and coagulate the cooperation detection that white sensor coagulate frost, reduce refrigerator master control borad I/
The occupancy of O Interface resource, it compensate for the deficiency of single sensor context of detection.
To achieve the above object, the technical scheme is that：
A kind of condenser type refrigerator coagulates white sensor detection circuit, it is characterised in that the detection circuit includes CDC chips
Circuit and MCU process circuits, the CDC chip detecting circuits are detected, is integrated in the aluminium that refrigerator coagulates the electric capacity front end of white sensor
In shell, the MCU process circuits, in line end USB public affairs shells, and CDC chip detecting circuits are connected to MCU process circuits.
Further, the MCU process circuits include MCU main control chips, NTC thermometric front-end filtering circuitries, UART interface and
I2C interface.
Further, CDC chip detecting circuits include CDC detection circuits and Wheatstone bridge, and Wheatstone bridge is used to survey
Temperature, Wheatstone bridge are connected between the GND and VDD of CDC detection circuits.
Further, CDC detects circuit and communicated by I2C agreements and MCU circuits, and the capacitance detected is transferred to
MCU processing, the I/O resources that MCU I2C order wires or MCU are abundant can be easy to evaporate with the multiple solidifying white sensors of carry
The cooperation detection of multiple sensors on device.
The solidifying frost detection circuit of the refrigerator realized of the present invention, can connect multiple condenser types and coagulate white sensor and carry out solidifying frost
Cooperation detection, the occupancy of refrigerator master control borad I/O interface resources is reduced, compensate for the deficiency of single sensor context of detection.Simultaneously
The influence that refrigerator work environment coagulates white sensor parasitic capacitance to condenser type can be reduced again, enhance the stability of sensor,
Anti-interference, and the sensitivity of sensor is improved, more accurate capacitance is obtained, so as to export the solidifying frost of accurate refrigerator
The information of thickness.
Brief description of the drawings
Fig. 1 is that the present invention implements refrigerator and coagulates white CDC chips and MCU circuit framework figure.
Fig. 2 is that the present invention implements the structural representation that refrigerator coagulates white CDC chips and MCU circuits.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Shown in Fig. 1, the condenser type refrigerator realized for the present invention coagulates white sensor detection circuit, and shown in figure, 001 is steaming
The condenser pipe on device is sent out, for the refrigerant that circulates, when refrigerator work, condensation pipe surface can condense one layer of frost.As solidifying frost is thick
The increase of degree, the thickness of frost is coagulated between capacitance electrode piece 002 also can accordingly increase, and the capacitance of capacity plate antenna can also be got over therewith
Greatly.Thus white thickness can be coagulated on evaporator to monitor by the size of the electric capacity exported.Therefore, the inspection that the present invention is realized
Slowdown monitoring circuit includes CDC chip detecting circuits and MCU process circuits (abbreviation MCU circuits), the CDC chip detecting circuits, collection
Into in the aluminum hull for the electric capacity front end that white sensor is coagulated in refrigerator, the MCU process circuits, in line end USB public affairs shells, and CDC
Chip detecting circuit is connected to MCU process circuits.
Wherein, CDC chip detecting circuits include CDC detection circuits and Wheatstone bridge, Wheatstone bridge are used for thermometric,
Wheatstone bridge is connected between the GND and VDD of CDC detection circuits.
Refer to the attached drawing 2, in of the invention, the Wheatstone bridge of CDC detection circuits (abbreviation CDC) and thermometric is placed on aluminum hull 003
It is interior, and sealed, prevent that water inlet influences circuit during defrost.CDC is integrated in front end electric capacity, can significantly reduce ice
Influence of the case complex environment to sensor parasitic capacitance, stablize real capacitance so as to export.CDC passes through I2C agreements and MCU
Circuit is communicated, and the capacitance detected is transferred into MCU processing, the abundant I/O of MCU I2C order wires or MCU
Resource with the multiple solidifying white sensors of carry, can be easy to the cooperation detection of multiple sensors on evaporator.Realized by 004 wire harness
Power supply of the MCU process circuits to CDC chips, the digital capacitance value of CDC outputs is received, detect the change in resistance of NTC thermistor.
MCU process circuits are placed in USB public affairs shell 005.USB public affairs shell can play a part of waterproof and protection PCB.After being handled by MCU
Solidifying frost thickness signal is communicated by UART interface wire harness 006 and refrigerator master control PCB, informs that white sensor is coagulated in refrigerator master control
Capacitance, so as to monitor the solidifying white situation on evaporator of refrigerator, refrigerator master control can judge solidifying according to the size of the capacitance of sensor
The thickness of frost, so as to carry out the intelligent control defrost time.
Therefore, the solidifying frost detection circuit of refrigerator that the present invention is realized, can connect multiple condenser types and coagulate white sensor progress
The cooperation detection of frost is coagulated, the occupancy of refrigerator master control borad I/O interface resources is reduced, compensate for single sensor context of detection not
Foot.The influence that refrigerator work environment coagulates white sensor parasitic capacitance to condenser type can be reduced again simultaneously, enhance sensor
Stability, anti-interference, and the sensitivity of sensor is improved, more accurate capacitance is obtained, so as to export accurately
Refrigerator coagulates the information of frost thickness.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (4)
1. a kind of condenser type refrigerator coagulates white sensor detection circuit, it is characterised in that the detection circuit includes the inspection of CDC chips
Slowdown monitoring circuit and MCU process circuits, the CDC chip detecting circuits, it is integrated in the aluminum hull that refrigerator coagulates the electric capacity front end of white sensor
Interior, the MCU process circuits, in line end USB public affairs shells, and CDC chip detecting circuits are connected to MCU process circuits.
2. condenser type refrigerator as claimed in claim 1 coagulates white sensor detection circuit, it is characterised in that the MCU process circuits
Including MCU main control chips, NTC thermometric front-end filtering circuitries, UART interface and I2C interface.
3. condenser type refrigerator as claimed in claim 2 coagulates white sensor detection circuit, it is characterised in that CDC chip detecting circuits
Include CDC detection circuits and Wheatstone bridge, Wheatstone bridge is used for thermometric, and Wheatstone bridge is connected to CDC detection circuits
Between GND and VDD.
4. condenser type refrigerator as claimed in claim 3 coagulates white sensor detection circuit, it is characterised in that CDC detection circuits pass through
I2C agreements and MCU circuits are communicated, and the capacitance detected is transferred into MCU processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710797917.2A CN107514860A (en) | 2017-09-06 | 2017-09-06 | A kind of condenser type refrigerator coagulates white sensor detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710797917.2A CN107514860A (en) | 2017-09-06 | 2017-09-06 | A kind of condenser type refrigerator coagulates white sensor detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107514860A true CN107514860A (en) | 2017-12-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710797917.2A Pending CN107514860A (en) | 2017-09-06 | 2017-09-06 | A kind of condenser type refrigerator coagulates white sensor detection circuit |
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| Country | Link |
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| CN (1) | CN107514860A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110793262A (en) * | 2018-08-03 | 2020-02-14 | 博西华电器（江苏）有限公司 | Refrigeration device |
| CN111336701A (en) * | 2020-03-13 | 2020-06-26 | 杭州艾欧翼科技有限公司 | Centralized cooling system |
| WO2022132060A1 (en) | 2020-12-14 | 2022-06-23 | Koc Universitesi | A defrosting system |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2909123Y (en) * | 2006-04-28 | 2007-06-06 | 广东富信电子科技有限公司 | Controller for refrigerator |
| CN201069461Y (en) * | 2007-06-18 | 2008-06-04 | 深圳市中传电气技术有限公司 | A life monitoring device for aluminum electrolysis capacitor in the frequency converter |
| CN201262700Y (en) * | 2008-09-19 | 2009-06-24 | 四川长虹电器股份有限公司 | Control device for air conditioner |
| JP2010019560A (en) * | 2008-07-08 | 2010-01-28 | Advance Denki Kogyo Kk | Noncontact-type temperature detector |
| CN101936791A (en) * | 2010-07-28 | 2011-01-05 | 四川蜀谷仪表科技有限公司 | Digital pressure gauge |
| CN101997446A (en) * | 2009-08-14 | 2011-03-30 | 珠海市奥凯励光电技术有限公司 | Artificial intelligent environment self-recognition multifunctional controller used for solar battery |
| CN102538145A (en) * | 2012-02-17 | 2012-07-04 | 苏州苏海亚电气有限公司 | Frost control device |
| CN202842494U (en) * | 2012-10-12 | 2013-04-03 | 大唐国际发电股份有限公司重庆分公司 | Intelligent safety helmet with functions of monitoring and personnel location |
| CN103902971A (en) * | 2014-03-12 | 2014-07-02 | 深圳市汇顶科技股份有限公司 | Fingerprint detection circuit and fingerprint detection device |
| CN103968890A (en) * | 2014-04-23 | 2014-08-06 | 苏州经贸职业技术学院 | Temperature, humidity and smoke monitoring system |
| CN204679040U (en) * | 2015-06-16 | 2015-09-30 | 山西省交通科学研究院 | A kind of pavement condition sensor |
| US20160054370A1 (en) * | 2014-08-25 | 2016-02-25 | Texas Instruments Incorporated | Ground fault detection based on capacitive sensing |
| CN207268557U (en) * | 2017-09-06 | 2018-04-24 | 芯海科技（深圳）股份有限公司 | A kind of condenser type refrigerator coagulates white sensor detection circuit |
-
2017
- 2017-09-06 CN CN201710797917.2A patent/CN107514860A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2909123Y (en) * | 2006-04-28 | 2007-06-06 | 广东富信电子科技有限公司 | Controller for refrigerator |
| CN201069461Y (en) * | 2007-06-18 | 2008-06-04 | 深圳市中传电气技术有限公司 | A life monitoring device for aluminum electrolysis capacitor in the frequency converter |
| JP2010019560A (en) * | 2008-07-08 | 2010-01-28 | Advance Denki Kogyo Kk | Noncontact-type temperature detector |
| CN201262700Y (en) * | 2008-09-19 | 2009-06-24 | 四川长虹电器股份有限公司 | Control device for air conditioner |
| CN101997446A (en) * | 2009-08-14 | 2011-03-30 | 珠海市奥凯励光电技术有限公司 | Artificial intelligent environment self-recognition multifunctional controller used for solar battery |
| CN101936791A (en) * | 2010-07-28 | 2011-01-05 | 四川蜀谷仪表科技有限公司 | Digital pressure gauge |
| CN102538145A (en) * | 2012-02-17 | 2012-07-04 | 苏州苏海亚电气有限公司 | Frost control device |
| CN202842494U (en) * | 2012-10-12 | 2013-04-03 | 大唐国际发电股份有限公司重庆分公司 | Intelligent safety helmet with functions of monitoring and personnel location |
| CN103902971A (en) * | 2014-03-12 | 2014-07-02 | 深圳市汇顶科技股份有限公司 | Fingerprint detection circuit and fingerprint detection device |
| CN103968890A (en) * | 2014-04-23 | 2014-08-06 | 苏州经贸职业技术学院 | Temperature, humidity and smoke monitoring system |
| US20160054370A1 (en) * | 2014-08-25 | 2016-02-25 | Texas Instruments Incorporated | Ground fault detection based on capacitive sensing |
| CN204679040U (en) * | 2015-06-16 | 2015-09-30 | 山西省交通科学研究院 | A kind of pavement condition sensor |
| CN207268557U (en) * | 2017-09-06 | 2018-04-24 | 芯海科技（深圳）股份有限公司 | A kind of condenser type refrigerator coagulates white sensor detection circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110793262A (en) * | 2018-08-03 | 2020-02-14 | 博西华电器（江苏）有限公司 | Refrigeration device |
| CN111336701A (en) * | 2020-03-13 | 2020-06-26 | 杭州艾欧翼科技有限公司 | Centralized cooling system |
| WO2022132060A1 (en) | 2020-12-14 | 2022-06-23 | Koc Universitesi | A defrosting system |
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|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171226 |