CN201360141Y - Inverted sequence and open phase protection circuit for milk container microcomputer controller - Google Patents
Inverted sequence and open phase protection circuit for milk container microcomputer controller Download PDFInfo
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- CN201360141Y CN201360141Y CNU200920088500XU CN200920088500U CN201360141Y CN 201360141 Y CN201360141 Y CN 201360141Y CN U200920088500X U CNU200920088500X U CN U200920088500XU CN 200920088500 U CN200920088500 U CN 200920088500U CN 201360141 Y CN201360141 Y CN 201360141Y
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Abstract
The utility model relates to an inverted sequence and open phase protection circuit for a milk container microcomputer controller, which is used in a milk container microcomputer controller for inverted sequence and open phase protection for a three-phase milk container compressor in dairy industry. The inverted sequence and open phase protection circuit comprises a three-phase voltage detection circuit which is connected with the input end of a signal shaping circuit; and the signal shaping circuit is connected with the input end of a phase sequence and open phase discriminate circuit which is connected with the input end of a power source circuit control circuit. The inverted sequence and open phase protection circuit has fewer component parts and is directly arranged in the milk container microcomputer controller, thus reducing the parts installed at the outside and reducing the using cost of the user. The inverted sequence and open phase protection circuit can detect the inverted sequence and open phase faults in the circuitry and cuts off the working power source in time to stop the compressor from working in the case of inverted sequence or open phase so as to prevent the compressor from rotating reversely. The inverted sequence and open phase protection circuit truly effectively protects the compressor and prolongs the service life of the compressor.
Description
Technical field
The utility model relates to a kind of dairy produce industry milk container microcomputer controller carries out backward and open-phase protection to three-phase milk container compressor milk container microcomputer controller backward and open-phase protection circuit that be used for.
Background technology
At present, along with the raising of health of people consciousness, dairy produce is developed on an unprecedented scale, and intelligent milk container also arises at the historic moment.Milk container controller manufacturer is also a lot, but is doing not enoughly aspect compressor protection, and compressor does not allow counter-rotating and phase shortage work as the nucleus equipment of milk container, otherwise can cause the mortality infringement to compressor.But the milk container controller on the market generally lacks the circuit that three-phase milk container compressor is carried out backward and open-phase protection, or does not have the backward defencive function.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists and a kind of milk container microcomputer controller backward and open-phase protection circuit is provided, detection line phase sequence and phase shortage situation in real time, and timely disengagement failure power supply is protected compressor conscientiously; When phase sequence mistake that inserts compressor and phase shortage, cut off working power, forbid compressor operating, prevent compressor reverse rotation operation or phase-deficient operation, protected the security of operation of compressor safety effectively.
For achieving the above object, the technical scheme that the utility model adopted is: comprise the three-phase voltage testing circuit, it is characterized in that: the output of three-phase voltage testing circuit is connected with the input of signal transformation circuit, the output of signal transformation circuit is connected with the input of phase sequence and phase shortage discriminator circuit, phase sequence and phase shortage discriminator circuit output be connected with the input of power on-off control circuit, three-phase alternating-current supply is after transformer step-down and the detection of three-phase voltage testing circuit, be connected to phase sequence and the phase shortage discriminator circuit that constitutes by double D trigger through signal transformation circuit again, control mains switch at last and whether allow compressor operating.
The annexation of three-phase voltage testing circuit is: A phase power supply is connected to 1 pin of transformer T1 through binding post, and 3 pin of transformer T1 connect resistance R 1; B phase power supply is connected to 1 pin of transformer T2 through binding post, and 3 pin of transformer T2 connect resistance R 2; C phase power supply is connected to 1 pin of transformer T3 through binding post, and 3 pin of transformer T3 connect resistance R 3; Zero line N connects together with 2 pin of transformer T1,2 pin of transformer T2,2 pin of transformer T3 through binding post, and 4 pin of transformer T1 connect together with 4 pin of 4 pin of transformer T2 and transformer T3 and are connected to ground GND1.
The annexation of signal transformation circuit is: resistance R 1 connects 1 pin of capacitor C 1,3 pin that connect amplifier U1,2 pin ground connection GND1 of capacitor C 1, the 2 pin ground connection GND1 of amplifier U1,4 pin of amplifier U1 connect+the 15V power supply, 11 pin of amplifier U1 connect-the 15V power supply, 1 pin of amplifier U1 connects resistance R 4, resistance R 4 connects 1 pin of capacitor C 4,2 pin of capacitor C 4 connect resistance R 7, the negative electrode that connects diode D11, resistance R 7 ground connection GND1, the anode of diode D11 connects resistance R 78, resistance R 78 ground connection GND1, resistance R 2 connects 1 pin of capacitor C 2,5 pin that connect amplifier U1,2 pin ground connection GND1 of capacitor C 2, the 6 pin ground connection GND1 of amplifier U1,7 pin of amplifier U1 connect resistance R 5, resistance R 5 connects 1 pin of capacitor C 5, connects the anode of diode D12,2 pin ground connection GND1 of capacitor C 5, the minus earth GND1 of diode D12, resistance R 3 connects 1 pin of capacitor C 3, connects 10 pin of amplifier U1,2 pin ground connection GND1 of capacitor C 3, the 9 pin ground connection GND1 of amplifier U1,8 pin of amplifier U1 connect resistance R 6, and resistance R 6 connects 1 pin of capacitor C 6, connect the anode of diode D15,2 pin ground connection GND1 of capacitor C 6, the minus earth GND1 of diode D13.
The annexation of phase sequence phase shortage discriminator circuit is: 5 pin of double D trigger U4A are connected with 14 pin+the 15V power supply, 6 pin of double D trigger U4A, 7 pin and 8 pin ground connection GND1,4 pin of double D trigger U4A are connected resistance R 78 with 10 pin, 3 pin of double D trigger U4A connect the anode of diode D12,2 pin of double D trigger U4A connect 9 pin of double D trigger U4A, 11 pin of double D trigger U4A connect the anode of diode D13, and 13 pin of double D trigger U4A connect resistance R 46.
The annexation of power on-off control circuit is: resistance R 46 connects the base stage b of triode Q5, the collector electrode c of triode Q5 connects power supply+15V, the emitter e of triode Q5 connects resistance R 9, resistance R 9 connects 1 pin of optocoupler U14, the 2 pin ground connection GND1 of optocoupler U14,3 pin of optocoupler U14 connect 1 pin of resistance R 47, connect the positive pole of capacitor C 25, connect 2 pin and 6 pin of 555 chip U6.2 pin ground connection GND2 of resistance R 47, the minus earth GND2 of capacitor C 25,1 pin of 555 chip U6 connects ground GND2,5 pin of 555 chip U6 connect 1 pin of capacitor C 26,2 pin of capacitor C 26 connect ground GND2,4 pin of optocoupler U14 connect 4 pin and 8 pin of 555 chip U6, the anode that connects diode D5,1 pin of connection relay J 1 connects power supply+12V, the negative electrode of diode D5 connects 3 pin of 555 chip U6,2 pin that connect relay J 1,3 pin of relay J 1 connect 1 pin of capacitor C 35, connect the OUT lead-out terminal, 4 pin of relay J 1 connect 2 pin of capacitor C 35, connect the OUT lead-out terminal.
The utility model directly incorporates in the milk container microcomputer controller, reduces outside link, reduces cost, and protective value is safe and reliable.
Description of drawings
Fig. 1 is the phase sequence open-phase protection block diagram of milk container microcomputer controller.
Fig. 2 is the phase sequence open-phase protection schematic diagram of milk container microcomputer controller.
Embodiment
The phase sequence open-phase protection of milk container microcomputer controller described in the utility model comprises three phase mains testing circuit, signal transformation circuit, phase sequence phase shortage discriminator circuit and power on-off control circuit.Have and in time can cut off the compressor fault power supply rapidly, guarantee the compressor operate as normal the three-phase voltage detection is reliable and secure.Used device is few, has reduced cost.
As shown in Figure 1, the compressor operating power supply is carried out the phase sequence open-phase protection of the milk container microcomputer controller of real-time guard, can in time detect the phase sequence open-phase fault, cut off working power, do not allow compressor operating, get rid of up to fault.The utility model comprises the three-phase voltage testing circuit, the output of three-phase voltage testing circuit is connected with the input of signal transformation circuit, the output of signal transformation circuit is connected with the input of phase sequence and phase shortage discriminator circuit, phase sequence and phase shortage discriminator circuit output be connected with the input of power on-off control circuit, three-phase alternating-current supply is after transformer step-down and the detection of three-phase voltage testing circuit, be connected to phase sequence and the phase shortage discriminator circuit that constitutes by double D trigger through signal transformation circuit again, control mains switch at last and control output and whether allow compressor operating.
As shown in Figure 2: the annexation of three-phase voltage testing circuit is: A phase power supply is connected to 1 pin of transformer T1 through binding post, and 3 pin of transformer T1 connect 1 pin of resistance R 1; B phase power supply is connected to 1 pin of transformer T2 through binding post, and 3 pin of transformer T2 connect 1 pin of resistance R 2; C phase power supply is connected to 1 pin of transformer T3 through binding post, and 3 pin of transformer T3 connect 1 pin of resistance R 3; Zero line N connects together with 2 pin of transformer T1,2 pin of transformer T2,2 pin of transformer T3 through binding post.4 pin of transformer T1 connect together with 4 pin of 4 pin of transformer T2 and transformer T3 and are connected to ground GND1.
As shown in Figure 2: the annexation of signal transformation circuit is: 2 pin of resistance R 1 connect 1 pin of capacitor C 1, connect 3 pin of amplifier U1.2 pin ground connection GND1 of capacitor C 1.The 2 pin ground connection GND1 of amplifier U1.4 pin of amplifier U1 connect+the 15V power supply, and 11 pin of amplifier U1 connect-the 15V power supply.1 pin of amplifier U1 connects 1 pin of resistance R 4, and 2 pin of resistance R 4 connect 1 pin of capacitor C 4, and 2 pin of capacitor C 4 connect 1 pin of resistance R 7, connects the negative electrode of diode D11,2 pin ground connection GND1 of resistance R 7.The anode of diode D11 connects 1 pin of resistance R 78,2 pin ground connection GND1 of resistance R 78.2 pin of resistance R 2 connect 1 pin of capacitor C 2, connect 5 pin of amplifier U1.2 pin ground connection GND1 of capacitor C 2.The 6 pin ground connection GND1 of amplifier U1.7 pin of amplifier U1 connect 1 pin of resistance R 5, and 2 pin of resistance R 5 connect 1 pin of capacitor C 5, connect the anode of diode D12.2 pin ground connection GND1 of capacitor C 5, the minus earth GND1 of diode D12.Two pin of resistance R 3 connect 1 pin of capacitor C 3, connect 10 pin of amplifier U1,2 pin ground connection GND1 of capacitor C 3.The 9 pin ground connection GND1 of amplifier U1.8 pin of amplifier U1 connect 1 pin of resistance R 6.2 pin of resistance R 6 connect 1 pin of capacitor C 6, connect the anode of diode D15.2 pin ground connection GND1 of capacitor C 6, the minus earth GND1 of diode D13.
As shown in Figure 2: the annexation of phase sequence phase shortage discriminator circuit is: 5 pin of double D trigger U4A are connected with 14 pin+the 15V power supply, 6 pin of double D trigger U4A, 7 pin and 8 pin ground connection GND1.4 pin of double D trigger U4A are connected 1 pin of resistance R 78 with 10 pin.3 pin of double D trigger U4A connect the anode of diode D12.2 pin of double D trigger U4A connect 9 pin of double D trigger U4A.11 pin of double D trigger U4A connect the anode of diode D13.13 pin of double D trigger U4A connect 1 pin of resistance R 46.
As shown in Figure 2: the annexation of power on-off control circuit is: 2 pin of resistance R 46 connect the base stage b of triode Q5, and the collector electrode c of triode Q5 connects power supply+15V, and the emitter e of triode Q5 connects 1 pin of resistance R 9.2 pin of resistance R 9 connect 1 pin of optocoupler U14, the 2 pin ground connection GND1 of optocoupler U14.3 pin of optocoupler U14 connect 1 pin of resistance R 47, connect the positive pole of capacitor C 25, connect 2 pin and 6 pin of 555 chip U6.2 pin ground connection GND2 of resistance R 47, the minus earth GND2 of capacitor C 25.1 pin of 555 chip U6 connects ground GND2.5 pin of 555 chip U6 connect 1 pin of capacitor C 26, and 2 pin of capacitor C 26 connect ground GND2.4 pin of optocoupler U14 connect 4 pin and 8 pin of 555 chip U6, connect the anode of diode D5, connect 1 pin of relay J 1, connect power supply+12V.The negative electrode of diode D5 connects 3 pin of 555 chip U6, connects 2 pin of relay J 1.3 pin of relay J 1 connect 1 pin of capacitor C 35, connect the OUT lead-out terminal.4 pin of relay J 1 connect 2 pin of capacitor C 35, connect the OUT lead-out terminal.
Schematic diagram explanation: 1.Resistance left side code name is 1, and the right code name is 2; Or the top code name is 1, and following code name is 2.
2.
Electric capacity left side code name is 1, and the right code name is 2; Or the top code name is 1, and following code name is 2.
Claims (5)
1; a kind of milk container microcomputer controller backward and open-phase protection circuit; comprise the three-phase voltage testing circuit; it is characterized in that: the output of three-phase voltage testing circuit is connected with the input of signal transformation circuit; the output of signal transformation circuit is connected with the input of phase sequence and phase shortage discriminator circuit; the output of phase sequence and phase shortage discriminator circuit is connected with the input of power on-off control circuit; three-phase alternating-current supply is after transformer step-down and the detection of three-phase voltage testing circuit; be connected to phase sequence and the phase shortage discriminator circuit that constitutes by double D trigger through signal transformation circuit again, control mains switch at last and whether allow compressor operating.
2, milk container microcomputer controller backward according to claim 1 and open-phase protection circuit, it is characterized in that: the annexation of three-phase voltage testing circuit is: A phase power supply is connected to 1 pin of transformer T1 through binding post, and 3 pin of transformer T1 connect resistance R 1; B phase power supply is connected to 1 pin of transformer T2 through binding post, and 3 pin of transformer T2 connect resistance R 2; C phase power supply is connected to 1 pin of transformer T3 through binding post, and 3 pin of transformer T3 connect resistance R 3; Zero line N connects together with 2 pin of transformer T1,2 pin of transformer T2,2 pin of transformer T3 through binding post, and 4 pin of transformer T1 connect together with 4 pin of 4 pin of transformer T2 and transformer T3 and are connected to ground GND1.
3; milk container microcomputer controller backward according to claim 1 and open-phase protection circuit; it is characterized in that: the annexation of signal transformation circuit is: resistance R 1 connects 1 pin of capacitor C 1; 3 pin that connect amplifier U1; 2 pin ground connection GND1 of capacitor C 1; the 2 pin ground connection GND1 of amplifier U1; 4 pin of amplifier U1 connect+the 15V power supply; 11 pin of amplifier U1 connect-the 15V power supply; 1 pin of amplifier U1 connects resistance R 4; resistance R 4 connects 1 pin of capacitor C 4; 2 pin of capacitor C 4 connect resistance R 7; the negative electrode that connects diode D11; resistance R 7 ground connection GND1; the anode of diode D11 connects resistance R 78; resistance R 78 ground connection GND1; resistance R 2 connects 1 pin of capacitor C 2; 5 pin that connect amplifier U1; 2 pin ground connection GND1 of capacitor C 2; the 6 pin ground connection GND1 of amplifier U1,7 pin of amplifier U1 connect resistance R 5, and resistance R 5 connects 1 pin of capacitor C 5; the anode that connects diode D12; 2 pin ground connection GND1 of capacitor C 5, the minus earth GND1 of diode D12, resistance R 3 connects 1 pin of capacitor C 3; 10 pin that connect amplifier U1; 2 pin ground connection GND1 of capacitor C 3, the 9 pin ground connection GND1 of amplifier U1,8 pin of amplifier U1 connect resistance R 6; resistance R 6 connects 1 pin of capacitor C 6; the anode that connects diode D15,2 pin ground connection GND1 of capacitor C 6, the minus earth GND1 of diode D13.
4; milk container microcomputer controller backward according to claim 1 and open-phase protection circuit; it is characterized in that: the annexation of phase sequence phase shortage discriminator circuit is: 5 pin of double D trigger U4A are connected with 14 pin+the 15V power supply; 6 pin of double D trigger U4A; 7 pin and 8 pin ground connection GND1; 4 pin of double D trigger U4A are connected resistance R 78 with 10 pin; 3 pin of double D trigger U4A connect the anode of diode D12; 2 pin of double D trigger U4A connect 9 pin of double D trigger U4A; 11 pin of double D trigger U4A connect the anode of diode D13, and 13 pin of double D trigger U4A connect resistance R 46.
5; milk container microcomputer controller backward according to claim 1 and open-phase protection circuit; it is characterized in that: the annexation of power on-off control circuit is: resistance R 46 connects the base stage b of triode Q5; the collector electrode c of triode Q5 connects power supply+15V; the emitter e of triode Q5 connects resistance R 9; resistance R 9 connects 1 pin of optocoupler U14; the 2 pin ground connection GND1 of optocoupler U14; 3 pin of optocoupler U14 connect 1 pin of resistance R 47; the positive pole that connects capacitor C 25; 2 pin and 6 pin that connect 555 chip U6; 2 pin ground connection GND2 of resistance R 47; the minus earth GND2 of capacitor C 25; 1 pin of 555 chip U6 connects ground GND2; 5 pin of 555 chip U6 connect 1 pin of capacitor C 26; 2 pin of capacitor C 26 connect ground GND2; 4 pin of optocoupler U14 connect 4 pin and 8 pin of 555 chip U6; the anode that connects diode D5; 1 pin that connects relay J 1; connect power supply+12V, the negative electrode of diode D5 connects 3 pin of 555 chip U6, connects 2 pin of relay J 1; 3 pin of relay J 1 connect 1 pin of capacitor C 35; connect the OUT lead-out terminal, 4 pin of relay J 1 connect 2 pin of capacitor C 35, connect the OUT lead-out terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920088500XU CN201360141Y (en) | 2009-02-13 | 2009-02-13 | Inverted sequence and open phase protection circuit for milk container microcomputer controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920088500XU CN201360141Y (en) | 2009-02-13 | 2009-02-13 | Inverted sequence and open phase protection circuit for milk container microcomputer controller |
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| Publication Number | Publication Date |
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| CN201360141Y true CN201360141Y (en) | 2009-12-09 |
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|---|---|---|---|
| CNU200920088500XU Expired - Fee Related CN201360141Y (en) | 2009-02-13 | 2009-02-13 | Inverted sequence and open phase protection circuit for milk container microcomputer controller |
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| CN (1) | CN201360141Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595013A (en) * | 2013-11-20 | 2014-02-19 | 南通三信塑胶装备科技有限公司 | Power supply source fault-phase and default-phase protective circuit of corona processor |
| CN108953207A (en) * | 2018-07-27 | 2018-12-07 | 廊坊市骏成消防技术咨询服务有限公司 | A kind of blower reversal protection control device |
-
2009
- 2009-02-13 CN CNU200920088500XU patent/CN201360141Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595013A (en) * | 2013-11-20 | 2014-02-19 | 南通三信塑胶装备科技有限公司 | Power supply source fault-phase and default-phase protective circuit of corona processor |
| CN103595013B (en) * | 2013-11-20 | 2017-05-17 | 南通三信塑胶装备科技股份有限公司 | Power supply source fault-phase and default-phase protective circuit of corona processor |
| CN108953207A (en) * | 2018-07-27 | 2018-12-07 | 廊坊市骏成消防技术咨询服务有限公司 | A kind of blower reversal protection control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20140213 |