CN2850264Y - Electronic pulsator control circuit - Google Patents
Electronic pulsator control circuit Download PDFInfo
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- CN2850264Y CN2850264Y CN 200520021090 CN200520021090U CN2850264Y CN 2850264 Y CN2850264 Y CN 2850264Y CN 200520021090 CN200520021090 CN 200520021090 CN 200520021090 U CN200520021090 U CN 200520021090U CN 2850264 Y CN2850264 Y CN 2850264Y
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Abstract
The utility model discloses an electronic pulsator control circuit, and the aim is to provide an electronic pulsator control circuit with good operational reliability, stability and strong adaptability and energy saving. The utility model comprises a microcontroller, a power supply, a three-end stabilized power supply, two coil loadings and two field effect transistors for switches. The electronic pulsator control circuit also comprises a short protection circuit (23) and a voltage doubling output energy-saving circuit (24), wherein the short protection circuit and an NAND gate 3 provide protection signals through a voltage comparator; the voltage doubling output energy-saving circuit and the field effect transistors provide instant voltage doubling generator potential through a photoelectric isolation coupler. The utility model is applied to mechanization milking facility systems.
Description
Technical field
The utility model relates to a kind of electronic pulsator control circuit that is used for dairy farming milking equipment system.
Background technology
In mechanization milking equipment system, pulsator is to be used for the device that the generation cycle changes the break-make negative-pressure gas, makes milk lining rubber diastole in the nipple-shape milking machine with closed, the operation of milking of realization system.At present, the pulsator that is used for the milking equipment system is divided into two kinds of pneumatic pulsator and electronic pulsators by the control mode difference, and it is stable that electronic pulsator has the pulsation dutycycle, and simple to operate and advantage that the life-span is long is the substitute products of pneumatic pulsator.Shortcoming is the price height, is afraid of humidity, short circuit easily.Existing various electronic pulsator control circuits are the nonreactive short-circuit function all, such as, when load pulsator binding post leaks, under maloperation or the situation such as be short-circuited, electric current increases tens of times, moment burns out fet switch, makes that the electronic pulsator functional reliability is poor, stability and adaptability is not strong; The control output circuit of existing various electronic pulsators remains on 24V voltage power supply state, and operating current is at 450mA～600mA, and the high electric energy consumption of electronic pulsator operating temperature is big.Therefore, also exist the high problem of production run cost.
The utility model content
The purpose of this utility model is to overcome weak point in the prior art; provide a kind of functional reliability, stability and adaptability strong, energy-conservation electronic pulsator control circuit; under the situation of being short-circuited, the Short Circuit withstand holding circuit is turn-offed control output immediately, and control circuit is carried out electric protection.
For achieving the above object, the technical solution adopted in the utility model is: described pulsator control circuit, contain a microcontroller, power supply, three-terminal voltage-stabilizing power supply, two coil loads, insurance, two FETs that are used for switch, it has D drain electrode, S source electrode and G grid, two coil load anodes link to each other with the positive pole of power supply, the negative terminal of two coil loads links to each other with the D drain electrode of two FETs respectively, the S source electrode of described two FETs also connects, by the minus earth of insurance.
Described electronic pulsator control circuit also comprises: short-circuit protection circuit, form by two FETs, sample resistance, three 3 NAND gates, two reversers, divider resistance, two common-mode resistances, potentiometer, voltage comparator, charging resistor, charging capacitor, diodes, three 3 NAND gate inputs of described short-circuit protection circuit link to each other with the output of microcontroller, the S of described two FETs source electrode with the insurance between be connected in series a sample resistance; Described sample resistance is used to produce setting voltage value; its S source electrode by FET links to each other with the input negative terminal of comparator; the output of described comparator links to each other with the input of 3 NAND gates; described charging resistor is connected in series with charging capacitor; the position links to each other with two inputs of 3 NAND gates therebetween; the anode of diode links to each other with the input of 3 NAND gates (41); the negative terminal of diode links to each other with the input of 3 NAND gates and the output of voltage comparator respectively, discharge delay protection when charging capacitor is used to be short-circuited.The output of described 3 NAND gates links to each other with the G grid of FET by reverser, the input negative terminal of described comparator is by common-mode resistance ground connection, the input anode is serially connected on the three-terminal voltage-stabilizing power supply by potentiometer, divider resistance, by common-mode resistance ground connection, sample resistance produces setting voltage value, make voltage comparator output electronegative potential, this electronegative potential is carried cut-off signals by 3 NAND gates and reverser to fet switch.
Described electronic pulsator control circuit also comprises: multiplication of voltage output energy-saving circuit, by the multiplication of voltage power supply, current-limiting resistance, photoelectric isolating coupler, charging diode, storage capacitor, pull down resistor, clamp diode, diode, FET is formed, it is anodal that described photoelectric isolating coupler has input, the input negative pole, the output colelctor electrode, the output emitter stage, described input is anodal to link to each other by the positive pole of current-limiting resistance with the three-terminal voltage-stabilizing power supply, the input negative pole links to each other with 3 NAND gate outputs, described output colelctor electrode is connected between the charging diode and storage capacitor of serial connection, storage capacitor is used for providing to the G of FET grid the high potential of conducting, the charging diode anode links to each other with the multiplication of voltage positive source, the negative terminal of storage capacitor links to each other with the anode of coil load, charging diode is used for charging to the storage capacitor forward conduction, pull down resistor in parallel between the G of described FET grid and coil load anode, clamp diode, pull down resistor is used for providing to the G of FET grid under the normality electronegative potential of shutoff, and the S source electrode of FET links to each other with the coil load anode.
Be connected in series the current-intercepting switch diode between the positive pole of described two coil load anodes and power supply.
As electronic pulsator control circuit of the present utility model, the multiplication of voltage power supply output multiplication of voltage value of described multiplication of voltage output energy-saving circuit is 28～33V, and hold-in winding working power output low voltage value is 12V, and the three-terminal voltage-stabilizing electric power output voltage is+5V.
As electronic pulsator control circuit of the present utility model, described FET all adopts IRF3808 type FET; Described three 3 NAND gates adopt 74HC10 type 3 NAND gates; Described photoelectric isolating coupler adopts P521-1 type photoelectric isolating coupler.
The beneficial effects of the utility model are: the electronic pulsator control circuit that adopts technique scheme, by multiplication of voltage output energy-saving circuit, after the adhesive of instantaneous triggering electronic pulsator solenoid load component, turn-off voltage-multiplying circuit, load is in low pressure and keeps duty, the about 340mA of operating current this moment, the multiplication of voltage working time is short, power can be disregarded, and has reduced the production run cost, has reached energy-conservation 60% effect; Under the situation of being short-circuited, the Short Circuit withstand holding circuit is turn-offed control output immediately, and controller is carried out circuit protection, has improved equipment functional reliability, stability and adaptability.
Description of drawings
Fig. 1 is the structure principle chart of the utility model electronic pulsator control circuit;
Fig. 2 is the short-circuit protection circuit schematic diagram;
Fig. 3 is a multiplication of voltage output energy-saving circuit schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in Figure 1, the electronic pulsator control circuit, contain a microcontroller 20, power supply 22, three-terminal voltage-stabilizing power supply 21, two coil load F, R, insure 26, two FETs 36,35 that are used for switch, it has D drain electrode, S source electrode and G grid, two coil load F, R anodes link to each other with the positive pole of power supply 22, the negative terminal of two coil load F, R links to each other with the D drain electrode of FET 36,35 respectively, the S source electrode of described two FETs 36,35 also connects, by insuring 26 minus earth.
In Fig. 2, as electronic pulsator control circuit of the present utility model, also comprise short-circuit protection circuit 23, by two FETs 36,35, sample resistance 37, three 3 NAND gates 41,42,43, reverser 44,45, divider resistance 50, common-mode resistance 47,48, potentiometer 49, voltage comparator 46, charging resistor 38, charging capacitor 39, diode 40 is formed, three 3 NAND gates 41 of described short-circuit protection circuit 23,42,43 inputs link to each other with the output of microcontroller 20, at described two FETs 36,35 S source electrode is connected in series a sample resistance 37 with insurance between 26; Described sample resistance 37 is used to produce setting voltage value; it is by FET 36; 35 S source electrode links to each other with the input negative terminal of voltage comparator 46; the output of described voltage comparator 46 and 3 NAND gates 42; 43 input 57; 58 link to each other; described charging resistor 38 is connected in series with charging capacitor 39; the input 55 of position and 3 NAND gates 41 therebetween; 56 link to each other; the input 55 of the anode of diode 40 and 3 NAND gates 41; 56 link to each other; the negative terminal of diode 40 respectively with 3 NAND gates 42; 43 input 57; 58 and the output of voltage comparator 46 link to each other discharge delay protection when charging capacitor 39 is used to be short-circuited.Described 3 NAND gates 42,43 output is by reverser 44,45 with FET 36,35 G grid links to each other, the input negative terminal of described voltage comparator 46 is by common-mode resistance 47 ground connection, its input anode is by potentiometer 49, divider resistance 50 is serially connected on the three-terminal voltage-stabilizing power supply 21, by common-mode resistance 48 ground connection, three-terminal voltage-stabilizing power supply 21 provides+5V voltage, under the situation of being short-circuited, the setting voltage value that sample resistance 37 produces makes voltage comparator 46 output electronegative potentials, this electronegative potential makes 3 NAND gates 42,43 outputs are to reverser 44,45 inputs provide high potential, reverser 44,45 outputs are to FET 36,35 G grid provides electronegative potential, turn-off FET 36,35, played the circuit protection effect;
In Fig. 3, multiplication of voltage output energy-saving circuit 24, by multiplication of voltage power supply 25, current-limiting resistance 27, photoelectric isolating coupler 29, charging diode 30, storage capacitor 34, pull down resistor 33, clamp diode 32, diode 54, FET 31 is formed, described photoelectric isolating coupler 29 has input anodal 28, input negative pole 51, output colelctor electrode 52, output emitter stage 53, described input anodal 28 is passed through current-limiting resistance 27 and is linked to each other with the positive pole of three-terminal voltage-stabilizing power supply 21, three-terminal voltage-stabilizing power supply 21 provides+5V voltage, described input negative pole 51 links to each other with 3 NAND gates, 41 outputs, described output colelctor electrode 52 is connected between the charging diode 30 and storage capacitor 34 of serial connection, storage capacitor 34 is used for providing to the G of FET 31 grid the high potential of conducting, charging diode 30 anodes and 25 anodal linking to each other of multiplication of voltage power supply, the negative terminal of storage capacitor 34 and coil load F, the anode of R links to each other, charging diode 30 is used for charging to storage capacitor 34 forward conductions, at the G of described FET 31 grid and coil load F, pull down resistor 33 in parallel between the R anode, clamp diode 32, pull down resistor 33 is used for providing to the G of FET 31 grid under the normality electronegative potential of shutoff, the S source electrode of FET 31 and coil load F, the R anode links to each other;
Be connected in series current-intercepting switch diode 54 between the positive pole of described two coil load F, R anode and power supply 22.
The multiplication of voltage power supply 25 output multiplication of voltage values of described multiplication of voltage output energy-saving circuit 24 are 28～33V, and hold-in winding working power 22 output low voltage value are 12V.
Described FET 31,35,36 all adopts IRF3808 type FET.
Described three 3 NAND gates 41,42,43 adopt 74HC10 type 3 NAND gates.
Described photoelectric isolating coupler 29 adopts P521-1 type photoelectric isolating coupler.
Coil load F, when R starts, microcontroller 20 controls 3 NAND gates 41 provide electronegative potential, described photoelectric isolating coupler 29 input conductings, the output conducting, storage capacitor 34 provides the high potential of conducting to the G of FET 31 grid, the D drain electrode and the conducting of S source electrode of FET 31, at this moment, described FET 36,35 must have one the tunnel to be in conducting state, and the multiplication of voltage current potential acts on coil load F, the R anode, coil load F, R connects, at this moment, microcontroller 20 controls 3 NAND gates 41 regularly produce high potential behind electronegative potential 5～10ms, and photoelectric isolating coupler 29 inputs do not have drive current, and its output colelctor electrode 52 turn-offs with output emitter stage 53, pull down resistor 33 drop-down current potentials turn-off FET 31, finish multiplication of voltage and start, under the multiplication of voltage starting state, diode 54 negative pole current potentials are higher than positive electrode potential, be in closed condition, the multiplication of voltage current potential closes has no progeny diode 54 conductings, coil load F, R is in low pressure and keeps the conducting duty; Under the situation of being short-circuited; voltage comparator 46 is to 3 NAND gates, 41 output electronegative potentials; 3 NAND gates, 41 outputs provide high potential to the input negative pole 51 of photoelectric isolating coupler 29; photoelectric isolating coupler 29 turn-offs immediately; FET 31 also turn-offs, and multiplication of voltage output energy-saving circuit 24 is carried out electric protection.
Claims (5)
1, a kind of electronic pulsator control circuit, contain a microcontroller (20), a power supply (22), a three-terminal voltage-stabilizing power supply (21), two coil loads (F), (R), insurance (26), two FETs (36) that are used for switch, (35), it has the D drain electrode, S source electrode and G grid, two coil loads (F), (R) anode links to each other with the positive pole of power supply (22), two coil loads (F), (R) negative terminal respectively with FET (36), (35) D drain electrode links to each other, described two FETs (36), (35) S source electrode also connects, minus earth by insurance (26), it is characterized in that described electronic pulsator control circuit also comprises:
Short-circuit protection circuit (23), by two FETs (36), (35), sample resistance (37), three 3 NAND gates (41), (42), (43), reverser (44), (45), divider resistance (50), common-mode resistance (47), (48), potentiometer (49), voltage comparator (46), charging resistor (38), charging capacitor (39), diode (40) is formed, three 3 NAND gates (41) of described short-circuit protection circuit (23), (42), (43) input links to each other with the output of microcontroller (20), at described two FETs (36), (35) be connected in series a sample resistance (37) between S source electrode and the insurance (26); Described sample resistance (37) is used to produce setting voltage value, it is by FET (36), (35) S source electrode links to each other with the input negative terminal of voltage comparator (46), the output of described voltage comparator (46) and 3 NAND gates (42), (43) input (57), (58) link to each other, described charging resistor (38) is connected in series with charging capacitor (39), the input (55) of position and 3 NAND gates (41) therebetween, (56) link to each other, the input (55) of the anode of diode (40) and 3 NAND gates (41), (56) link to each other, the negative terminal of diode (40) respectively with 3 NAND gates (42), (43) input (57), (58) and the output of voltage comparator (46) link to each other, charging capacitor (39) delay protection that discharges when being used to be short-circuited, described 3 NAND gates (42), (43) output is by reverser (44), (45) with FET (36), (35) G grid links to each other, the input negative terminal of described voltage comparator (46) is by common-mode resistance (47) ground connection, its input anode is by potentiometer (49), divider resistance (50) is serially connected on the three-terminal voltage-stabilizing power supply (21), by common-mode resistance (48) ground connection, sample resistance (37) produces setting voltage value, make voltage comparator (46) output electronegative potential, this electronegative potential is by 3 NAND gates (42), (43) and reverser (44), (45) to FET (36), (35) switch is carried cut-off signals;
Multiplication of voltage output energy-saving circuit (24), by multiplication of voltage power supply (25), current-limiting resistance (27), photoelectric isolating coupler (29), charging diode (30), storage capacitor (34), pull down resistor (33), clamp diode (32), diode (54), FET (31) is formed, described photoelectric isolating coupler (29) has input anodal (28), input negative pole (51), output colelctor electrode (52), output emitter stage (53), described input anodal (28) links to each other with the positive pole of three-terminal voltage-stabilizing power supply (21) by current-limiting resistance (27), input negative pole (51) links to each other with 3 NAND gates (41) output, described output colelctor electrode (52) is connected between the charging diode (30) and storage capacitor (34) of serial connection, storage capacitor (34) is used for providing to the G grid of FET (31) high potential of conducting, charging diode (30) anode links to each other with multiplication of voltage power supply (25) is anodal, the negative terminal of storage capacitor (34) and coil load (F), (R) anode links to each other, charging diode (30) is used for charging to storage capacitor (34) forward conduction, G grid and coil load (F) at described FET (31), (R) pull down resistor in parallel (33) between the anode, clamp diode (32), pull down resistor (33) is used for providing to the G grid of FET (31) under the normality electronegative potential of shutoff, the S source electrode of FET (31) and coil load (F), (R) anode links to each other;
Be connected in series current-intercepting switch diode (54) between the positive pole of described two coil loads (F), (R) anode and power supply (22).
2, according to the described electronic pulsator control circuit of claim 1, it is characterized in that: multiplication of voltage power supply (25) the output multiplication of voltage value of described multiplication of voltage output energy-saving circuit (24) is 28～33V, hold-in winding working power (22) output low voltage value is 12V, and three-terminal voltage-stabilizing power supply (21) output voltage is+5V.
3, electronic pulsator control circuit according to claim 1 is characterized in that: IRF3808 type FET is all adopted in described FET (31), (35), (36).
4, electronic pulsator control circuit according to claim 1 is characterized in that: 74HC10 type 3 NAND gates are adopted in described three 3 NAND gates (41), (42), (43).
5, electronic pulsator control circuit according to claim 1 is characterized in that: described photoelectric isolating coupler (29) adopts P521-1 type photoelectric isolating coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021090 CN2850264Y (en) | 2005-06-23 | 2005-06-23 | Electronic pulsator control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021090 CN2850264Y (en) | 2005-06-23 | 2005-06-23 | Electronic pulsator control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2850264Y true CN2850264Y (en) | 2006-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520021090 Expired - Fee Related CN2850264Y (en) | 2005-06-23 | 2005-06-23 | Electronic pulsator control circuit |
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| CN (1) | CN2850264Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103518628A (en) * | 2013-10-23 | 2014-01-22 | 李保岭 | Electronic controller of electric pulsation milking machine |
| CN114101617A (en) * | 2021-11-29 | 2022-03-01 | 广东韶钢松山股份有限公司 | Non-contact relay and metallurgical continuous casting machine |
-
2005
- 2005-06-23 CN CN 200520021090 patent/CN2850264Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103518628A (en) * | 2013-10-23 | 2014-01-22 | 李保岭 | Electronic controller of electric pulsation milking machine |
| CN114101617A (en) * | 2021-11-29 | 2022-03-01 | 广东韶钢松山股份有限公司 | Non-contact relay and metallurgical continuous casting machine |
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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: 20061227 Termination date: 20130623 |