CN211400499U - Refrigerator control circuit with power-off protection function - Google Patents
Refrigerator control circuit with power-off protection function Download PDFInfo
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- CN211400499U CN211400499U CN201922242591.4U CN201922242591U CN211400499U CN 211400499 U CN211400499 U CN 211400499U CN 201922242591 U CN201922242591 U CN 201922242591U CN 211400499 U CN211400499 U CN 211400499U
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Abstract
The utility model discloses a refrigerator control circuit with power-off protection function, include: the fan current sensor is used for detecting current information of the condensing fan in a working state, and the compressor current sensor is used for detecting current information of the compressor in the working state; the DCS comprises a DCS controller, a fan current sensor and a compressor current sensor, wherein the DCS controller is used for receiving data information transmitted by the fan current sensor and the compressor current sensor and converting the received current information into a data form to be output; the temperature sensor transmits the detected temperature information to the conversion module in real time, and the conversion module is connected with the DCS controller; the circuit also comprises a power-off protection circuit, wherein the power-off protection circuit is connected with the DCS controller, and provides stable electric energy for the DCS controller when the refrigerator is in a power-off condition; the output end of the DCS controller is connected with the touch screen, and the output end of the refrigeration controller is connected with the touch screen.
Description
Technical Field
The utility model relates to a refrigerator refrigeration control field especially relates to a refrigerator control circuit with power-off protection function.
Background
At present, the refrigerator is widely applied to daily life of users, and the quality of life and safety guarantee are improved for the family life of the users. The refrigerator among the prior art is provided with freezing region, cold-stored region and fresh-keeping region usually, consequently need carry out accurate regulation and control to the control circuit of refrigerator to guarantee that the region of every refrigerator can carry out stable accurate work.
However, the refrigerator in the prior art adopts nixie tube display, so that the operation is inconvenient, and the human-computer interaction data is limited; the control circuit of refrigerator is low to the control accuracy of compressor and fan in the refrigerator, and the user can't know whether compressor, fan normally work in the refrigerator, and it is important when indoor sudden power failure control circuit does not have the outage safeguard measure to the original operating condition data of refrigerator is lost, can't regulate and control the refrigerator once more.
SUMMERY OF THE UTILITY MODEL
According to the problem that prior art exists, the utility model discloses a refrigerator control circuit with power-off protection function, include: a fan current sensor for detecting the current information of the condensing fan in the working state,
the compressor current sensor is used for detecting the current information of the compressor in the working state;
the DCS controller is used for receiving data information transmitted by the fan current sensor and the compressor current sensor and converting the received voltage signals into data forms to be output;
the temperature sensor is used for detecting temperature information in the refrigerator and transmitting the detected temperature information to the conversion module in real time, and the conversion module is connected with the DCS controller;
the circuit also comprises a power-off protection circuit, wherein the power-off protection circuit is connected with the DCS controller and the touch screen, and provides stable electric energy for the DCS controller and the touch screen when the refrigerator is in a power-off condition;
the output end of the DCS controller is connected with the touch screen, and the output end of the refrigeration controller is connected with the touch screen.
Furthermore, the power-off protection circuit comprises a first storage battery, a second storage battery, a first relay, a second relay, a third relay, a 12V switching power supply and a 24V switching power supply which are arranged in parallel, wherein the first storage battery and the second storage battery are connected with the 12V switching power supply, and the first relay, the second relay and the third relay are connected to an output circuit of the first storage battery and an output circuit of the second storage battery;
when the alternating current 220V is normally supplied, a power supply is respectively connected to a 24V switching power supply and a 12V switching power supply, a first relay and a third relay are powered on, and a first storage battery and a second storage battery are connected to the 12V switching power supply in parallel;
when the alternating current is 220V, the relay I, the relay II and the relay III are powered off, and the storage battery I and the storage battery II are connected in series to form a 24V direct current power supply to output power for the DCS controller and the touch screen.
The touch screen is in data communication with the refrigeration controller through an RS485 communication interface, and a USB interface and a network port are arranged on the touch screen. The DCS controller can detect 0-5V voltage signals, output relay signals and output 12V voltage signals.
The circuit further comprises an access controller and an electronic lock, the output end of the DCS controller is connected with the access controller and the electronic lock, and the output end of the access controller is connected with the access reading head.
And the entrance guard controller is provided with a network port.
The temperature sensor is a PT100 sensor.
Due to the adoption of the technical scheme, the utility model provides a refrigerator control circuit with power-off protection function, which adds a standby battery, when the alternating current 220V power supply is normal, the storage battery is charged in parallel; when the alternating current 220V is cut off, the storage battery is connected in series to supply power. The normal work of reserve power supply system has been guaranteed to and exchange when the 220V falls the power supply, and touch-sensitive screen work, the temperature value in the control refrigerator simultaneously and open the electronic lock, and the normal operation of opening, closing the refrigerator when guaranteeing to fall the power supply simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic circuit diagram of the control circuit of the refrigerator of the present invention.
Detailed Description
For making the technical solution and the advantages of the present invention clearer, the following combines the drawings in the embodiments of the present invention, to the technical solution in the embodiments of the present invention is clear and complete description:
as shown in fig. 1, the refrigerator control circuit with power-off protection function specifically includes a fan current sensor 1, a compressor current sensor 2, a temperature sensor 5, a conversion module 6, a touch screen 4, a DCS controller 3, and a power-off protection circuit. The fan current sensor 1 is used for detecting current information of a fan in a working state, and the compressor current sensor 2 is used for detecting current information of a compressor in a refrigerator in a working process. The temperature sensor 5 is installed inside the refrigerator to detect temperature information of the refrigerator. The fan current sensor 1 and the compressor current sensor 2 transmit detected data information to the DCS controller 3, and the temperature sensor 5 transmits temperature data to the DCS controller 3 through the conversion module 6. The circuit also comprises a power-off protection circuit, wherein the power-off protection circuit is connected with the DCS controller 3 and the touch screen 4, and when the refrigerator is in a power-off condition, the power-off protection circuit provides stable electric energy for the DCS controller 3 and the touch screen 4; the output end of the DCS controller 3 is connected with the touch screen 4. The touch screen 4 is provided with 24V voltage, can be in data communication with the refrigeration controller 10 through an RS485 communication interface, and receives control instruction information of the touch screen 4 so as to adjust the working process of the refrigeration controller 10.
Further, the power-off protection circuit comprises a first storage battery 11, a second storage battery 12, a first relay 15, a second relay 14, a third relay 13, a 12V switching power supply 16 and a 24V switching power supply 17 which are arranged in parallel, wherein the first storage battery 11 and the second storage battery 12 are connected with the 12V switching power supply 16, and the first relay 15, the second relay 14 and the third relay 13 are connected to an output circuit of the first storage battery 11 and the second storage battery 12.
When the alternating current 220V is normally supplied, a power supply is respectively connected to a 24V switching power supply 17 and a 12V switching power supply 16, a relay I15 and a relay III 13 are powered on, and a storage battery I11 and a storage battery II 12 are connected to the 12V switching power supply 16 in parallel;
when the alternating current 220V is cut off, the relay I15, the storage battery II 12 and the relay III 13 are cut off, the storage battery I13 and the storage battery II 12 are connected in series to form a 24V direct current power supply, and the 24V direct current power supply outputs power to the DCS controller 3 and the touch screen 4.
When the alternating current 220V is normally supplied, the power supply is respectively connected to the 24V switching power supply 17 and the 12V switching power supply 16. The 24V switching power supply 17 directly supplies power to the DCS controller 3 and the touch screen 4, and the 12V switching power supply 16 charges the two storage batteries;
when the alternating current 220V is cut off, the two switching power supplies do not work, and the 24V direct current power supply works by connecting the two storage batteries in series.
No matter whether the power is cut off, the access controller 8, the electronic lock 9, the fan current sensor 1 and the compressor current sensor 2 are powered through the 12V output of the DCS controller 3.
In a specific working state: when the alternating current 220V is normally supplied, the first relay 15 and the third relay 15 are electrified, the terminal 5 and the terminal 3 of the first relay 13 are communicated, namely the terminal with the terminal number red 103 is communicated with the terminal number white 105; the terminal 4 of the relay III 13 is communicated with the terminal 6, namely the terminal number black 304 is communicated with the terminal where the terminal number peach 306 is located, the positive poles (+) of the storage battery I11 and the storage battery II 12 are connected to the positive pole (+) of the 12V switching power supply 16, the negative poles (-) of the storage battery I11 and the storage battery II 12 are connected to the negative pole (-) of the 12V switching power supply 16, the storage battery I11 and the storage battery II 12 are connected to the 12V switching power supply 16 in parallel, and when the electric quantity of the storage battery is insufficient, the two storage batteries, namely the storage battery I11 and the storage battery II 12, are charged through the switching power supply.
When the alternating current 220V is cut off, the relay I15, the relay II 14 and the relay III 13 are cut off, the terminal 1 and the terminal 5 of the relay II 14 are communicated, namely the terminal where the red 205 and the white 201 are located is communicated, the terminal 2 and the terminal 6 of the relay II 14 are communicated, namely the terminal where the gray 202 and the black 206 are located is communicated, the terminal 2 and the terminal 6 of the relay III 12 are communicated, namely the terminal where the red 302 and the peach 306 are located is communicated, the two 12V storage batteries are connected in series to form 24V direct-current power supply output, and whether the power is supplied to the DCS controller 3 and the touch screen 4 is achieved through the.
Further, this circuit still includes access control ware 8, access control ware 8's output is connected with entrance guard's read head 81. The DCS controller 3 outputs 12v voltage to provide electric energy for the entrance guard controller 8. And setting an unlocking signal to be 12V, and when the electronic lock 9 is locked, receiving a 12V rising edge of an unlocking signal end, and unlocking the electronic lock. The entrance guard reading head 81 can realize the input and identification of ID (IC) card signals, when the card is swiped, the card data is transmitted to the entrance guard controller 8, if the card information is compared correctly, the entrance guard controller 8 outputs an unlocking signal to open the electronic lock 9.
Preferably, the entrance guard controller 8 is provided with a network port.
Preferably, the temperature sensor 5 is a PT100 sensor.
The touch screen is adopted in the circuit, so that human-computer interaction is more visual, the data volume is larger, the operation is simple, the touch screen sends an unlocking instruction to the DCS controller, the DCS controller can unlock the electronic lock, the electronic lock is controlled by the electronic lock and is safer, and the touch screen-DCS controller is adopted to unlock the electronic lock, the electronic lock is unlocked by swiping a card, and multiple unlocking modes are adopted to ensure normal unlocking.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. A refrigerator control circuit with power-off protection function is characterized by comprising:
a fan current sensor (1) for detecting current information of the condensing fan in a working state,
a compressor current sensor (2) for detecting current information of the compressor in an operating state;
the DCS controller (3) is used for receiving data information transmitted by the fan current sensor (1) and the compressor current sensor (2), and the DCS controller (3) converts the received voltage signals into a data form to be output;
the temperature sensor (5) is used for detecting the temperature information in the refrigerator, the temperature sensor (5) is used for transmitting the detected temperature information to the conversion module (6) in real time, and the conversion module (6) is connected with the DCS controller (3);
the circuit also comprises a power-off protection circuit, wherein the power-off protection circuit is connected with the DCS controller (3) and the touch screen (4), and when the refrigerator is in a power-off condition, the power-off protection circuit provides stable electric energy for the DCS controller (3) and the touch screen (4);
the output end of the DCS controller (3) is connected with the touch screen (4), and the output end of the touch screen (4) is connected with the refrigeration controller (10).
2. A refrigerator control circuit with power-off protection function as claimed in claim 1, further characterized in that: the power-off protection circuit comprises a first storage battery (11), a second storage battery (12), a first relay (15), a second relay (14), a third relay (13), a 12V switching power supply (16) and a 24V switching power supply (17) which are arranged in parallel, wherein the first storage battery (11) and the second storage battery (12) are connected with the 12V switching power supply (16), and the first relay (15), the second relay (14) and the third relay (13) are connected to output circuits of the first storage battery (11) and the second storage battery (12);
when the alternating current 220V is normally supplied, a power supply is respectively connected to a 24V switching power supply (17) and a 12V switching power supply (16), a relay I (15) and a relay III (13) are powered on, and a storage battery I (11) and a storage battery II (12) are connected to the 12V switching power supply (16) in parallel;
when the alternating current 220V is cut off, the relay I (15), the relay II (14) and the relay III (13) are cut off, the storage battery I (11) and the storage battery II (12) are connected in series to form a 24V direct current power supply, and the output of the 24V direct current power supply supplies power for the DCS controller (3) and the touch screen (4).
3. A refrigerator control circuit with power-off protection function as claimed in claim 1, further characterized in that: the touch screen (4) is in data communication with the refrigeration controller (10) through an RS485 communication interface, and a USB interface and a network port are arranged on the touch screen (4).
4. A refrigerator control circuit with power-off protection function as claimed in claim 1, further characterized in that: and the touch screen (4) is in data communication with the DCS controller (3) through an RS485 communication interface.
5. A refrigerator control circuit with power-off protection function as claimed in claim 1, further characterized in that: this circuit still includes access control ware (8) and electronic lock (9), the output of DCS controller (3) is connected with access control ware (8) and electronic lock (9), the output of access control ware (8) is connected with entrance guard's read head (81).
6. The refrigerator control circuit with power-off protection function as claimed in claim 5, further characterized in that: and a net port is arranged on the access controller (8).
7. A refrigerator control circuit with power-off protection function as claimed in claim 1, further characterized in that: the temperature sensor (5) is a PT100 sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922242591.4U CN211400499U (en) | 2019-12-14 | 2019-12-14 | Refrigerator control circuit with power-off protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922242591.4U CN211400499U (en) | 2019-12-14 | 2019-12-14 | Refrigerator control circuit with power-off protection function |
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| Publication Number | Publication Date |
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| CN211400499U true CN211400499U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922242591.4U Active CN211400499U (en) | 2019-12-14 | 2019-12-14 | Refrigerator control circuit with power-off protection function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873512A (en) * | 2019-12-14 | 2020-03-10 | 冰山松洋生物科技(大连)有限公司 | Refrigerator control circuit with power-off protection function |
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2019
- 2019-12-14 CN CN201922242591.4U patent/CN211400499U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873512A (en) * | 2019-12-14 | 2020-03-10 | 冰山松洋生物科技(大连)有限公司 | Refrigerator control circuit with power-off protection function |
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