CN105048930A - Circuit device for acquiring number of rotating circles of motor - Google Patents
Circuit device for acquiring number of rotating circles of motor Download PDFInfo
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- CN105048930A CN105048930A CN201510496686.2A CN201510496686A CN105048930A CN 105048930 A CN105048930 A CN 105048930A CN 201510496686 A CN201510496686 A CN 201510496686A CN 105048930 A CN105048930 A CN 105048930A
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Abstract
The invention discloses a circuit device for acquiring the number of the rotating circles of a motor. The circuit device includes a microprocessor (1), a filtering/shaping circuit (2), a locked-rotor sampling circuit (3), a power source conversion circuit (4), a locked-rotor sampling resistor (R) and a switching loop (QH). According to the circuit device of the invention, the switching loop is composed of a high-frequency transformer, a motor, an A relay and a B relay; and the power source conversion circuit converts 12V voltage of a vehicle power source into 5V voltage which is supplied for the microprocessor. According to the technical scheme of the invention, signals generated by electrified rotation and inertia rotation of the motor are fed back to the microprocessor through the switching loop, so that the microprocessor performs counting processing, and therefore, the circuit device for acquiring the number of the rotating circles of the motor has the advantages of no signal loss as well as being accurate and reliable, and can assist in reducing cost.
Description
Technical field
The present invention relates to a kind of circuit arrangement, specifically referring to a kind of circuit arrangement gathering the electric machine rotation number of turns for gathering the automobile electric car-window electric machine rotation number of turns.
Background technology
Automobile electric car-window adopts and drives lifting by the motor of conputer controlled, and the drive motors of lift car glass for vehicle window, for there being brushless motor, is called for short motor; When vertical motion done by glass for vehicle window, on glass between edge and window frame, the danger of the staff because accidentally putting in, the number of people or other objects can be clamped.For this reason, American-European standard regulation, occurring that object is pressed from both sides when glass for vehicle window automatically rises in 4 ~ 200 millimeters under window frame should decline automatically, caught object, and the pressure comprised suffered by human body must be less than 100 newton, thus unlikelyly damages human body.Ensure that glass for vehicle window has the position that pinch resistant functionality just must detect glass in regulation region, the position detecting glass then needs the lap signal feedback to the computer rotated by rotor, carries out counting process control motor execution again by computer.
The device that prior art gathers the electric machine rotation number of turns has two kinds, and one is current type, and another kind is Hall-type; So-called current type to be energized by rotor by waveform acquisition circuit to rotating the current fluctuation produced and be converted to current waveform signal and be supplied to computer and carry out the number of turns and count process; When the motor power-off of the rotation that is energized, the effect motor of inertia also can continue to rotate some circles and just can stop, and is thus called inertial rotation; When energising rotates, motor is in electric motor state; During inertial rotation, motor is Generator Status, sine wave output; The waveform acquisition circuit of prior art does not collect the inertial rotation waveform of motor, thus there is leakage and adopts, and it is inaccurate that the counting causing current type to provide is adopted in leakage, leaks the accumulation of adopting and the lifting of glass for vehicle window can be made to produce dangerous misoperation; The advantage of current type is that cost is low, and inferior position is poor reliability; So-called Hall-type, is adopt the inner Hall being provided with Hall circuit to have brushless motor, is called for short hall electric machine, and the corner amount that rotor rotates by Hall circuit is converted to pulse square wave and is supplied to computer carries out the process of corner counting; The advantage of Hall-type is that reliability is high, and inferior position is that cost is high; Therefore, there are poor reliability or the high problems and shortcomings of cost in prior art.
Summary of the invention
For above-mentioned prior art Problems existing with not enough, the present invention adopts the circuit arrangement be made up of microprocessor, filtering/shaping circuit, stall sample circuit, power-switching circuit, stall sampling resistor, switching circuit, wherein, switching circuit is made up of high frequency transformer, motor, A relay, B relay, and automobile power source 12V voltage transitions is that 5V voltage is to microprocessor power supply by power-switching circuit; During work, by Microprocessor S3C44B0X, when clockwise electrical power rotates: A relay power, the A normally opened contact of A relay closes; The power-off of B relay, the B normally-closed contact of B relay closes; The electric current of drive motors enters ground by the A normally opened contact of A relay closes through the primary coil of high frequency transformer, motor, the B normally-closed contact of B relay closes, stall sampling resistor, the current fluctuation of drive motors is coupled to secondary coil through the primary coil of high frequency transformer, filtering/shaping circuit the output waveform of high frequency transformer secondary coil is converted to square-wave signal feed back to microprocessor carry out counting process; During clockwise motor inertial rotation: the power-off of A relay, the A normally-closed contact of A relay closes, the power-off of B relay, and the B normally-closed contact of B relay closes; Motor inertial rotation produce induced current be coupled to secondary coil by the primary coil of high frequency transformer, filtering/shaping circuit the output waveform of secondary coil is converted to square-wave signal feed back to microprocessor carry out counting process; When counterclockwise electrical power rotates: the power-off of A relay, the A normally-closed contact of A relay closes; B relay power, the B normally opened contact of B relay closes; The electric current of drive motors enters ground by the B normally opened contact of B relay closes through the primary coil of motor, high frequency transformer, the A normally-closed contact of A relay closes, stall sampling resistor, the current fluctuation of drive motors is coupled to secondary coil through the primary coil of high frequency transformer, filtering/shaping circuit the output waveform of high frequency transformer secondary coil is converted to square-wave signal feed back to microprocessor carry out counting process; During counterclockwise motor inertial rotation: the power-off of A relay, the A normally-closed contact of A relay closes; The power-off of B relay, the B normally-closed contact of B relay closes; Motor inertial rotation produce induced current be coupled to secondary coil by the primary coil of high frequency transformer, filtering/shaping circuit the output waveform of secondary coil is converted to square-wave signal feed back to microprocessor carry out counting process; During motor rotation blockage, the heavy DC fluctuation flowing through stall sampling resistor is fed back to microprocessor and carries out stall process by stall sample circuit after analog-to-digital conversion; By switching circuit, signal feedback to the microprocessor that the energising rotation of motor and inertial rotation produce is carried out the technical scheme counting process, a kind of circuit arrangement gathering the electric machine rotation number of turns is provided, be intended to the device making the collection electric machine rotation number of turns, reach not lossing signal, accurately reliable, the object that reduces costs.
The object of the present invention is achieved like this: a kind of circuit arrangement gathering the electric machine rotation number of turns, comprise microprocessor, filtering/shaping circuit, stall sample circuit, power-switching circuit, stall sampling resistor, switching circuit, wherein: described filtering/shaping circuit is the integrated circuit modules sinusoidal waveform of input being converted to square-wave signal output;
Described stall sample circuit is the analog to digital conversion circuit large DC waveform that skyrockets of input being processed into square-wave signal output;
Described power-switching circuit is that vehicle power 12V is converted to the circuit module of 5V voltage to microprocessor power supply;
Described stall sampling resistor is the wire resistance of 0.01 Ω;
Described switching circuit is made up of high frequency transformer, motor, A relay, B relay, and wherein, described A relay is provided with often to be opened make contact and normally closedly dynamic open contact and be called A normally opened contact and A normally-closed contact; Described B relay is provided with often to be opened make contact and normally closedly dynamic open contact and be called B normally opened contact, B normally-closed contact;
The power input of output and microprocessor that input and the 12V vehicle power of power-switching circuit are connected power-switching circuit is connected, the earth terminal ground connection of power-switching circuit; One end of the solenoid of A relay is connected with 12V vehicle power, the other end of the solenoid of A relay is connected with the first control end of microprocessor, the described A normally opened contact of A relay is connected with 12V vehicle power, the described A normally-closed contact of A relay is connected with the upper end of stall sampling resistor, the lower end ground connection of stall sampling resistor; One end of the solenoid of B relay is connected with 12V vehicle power, the other end of the solenoid of B relay is connected with the second control end of microprocessor, the described B normally opened contact of B relay is connected with 12V vehicle power, and the described B normally-closed contact of B relay is connected with the upper end of stall sampling resistor; The fixed end of the movable contact spring of A relay is connected with one end of the primary coil of high frequency transformer, the other end of the primary coil of high frequency transformer is connected with motor input, another input of motor is connected with the fixed end of the movable contact spring of B relay, the upper end of the secondary coil of high frequency transformer is connected with the input of filtering/shaping circuit, the lower end of the secondary coil of high frequency transformer and the earth terminal earth of filtering/shaping circuit; The output of filtering/shaping circuit is connected with the first signal input part of microprocessor; The input of stall sample circuit is connected with the upper end of stall sampling resistor, and the output of stall sample circuit is connected with the secondary signal input of microprocessor.
Operation principle and beneficial effect
During work, by Microprocessor S3C44B0X:
When clockwise electrical power rotates, A relay power, the A normally opened contact of A relay closes; The power-off of B relay, the B normally-closed contact of B relay closes; The electric current of drive motors enters ground by the A normally opened contact of A relay closes through the primary coil of high frequency transformer, motor, the B normally-closed contact of B relay closes, stall sampling resistor, the current fluctuation of drive motors is coupled to secondary coil through the primary coil of high frequency transformer, filtering/shaping circuit the output waveform of high frequency transformer secondary coil is converted to square-wave signal feed back to microprocessor carry out counting process;
During clockwise motor inertial rotation, the power-off of A relay, the A normally-closed contact of A relay closes, the power-off of B relay, and the B normally-closed contact of B relay closes; Motor inertial rotation produce induced current be coupled to secondary coil by the primary coil of high frequency transformer, filtering/shaping circuit the output waveform of secondary coil is converted to square-wave signal feed back to microprocessor carry out counting process;
When counterclockwise electrical power rotates, the power-off of A relay, the A normally-closed contact of A relay closes; B relay power, the B normally opened contact of B relay closes; The electric current of drive motors enters ground by the B normally opened contact of B relay closes through the primary coil of motor, high frequency transformer, the A normally-closed contact of A relay closes, stall sampling resistor, the current fluctuation of drive motors is coupled to secondary coil through the primary coil of high frequency transformer, filtering/shaping circuit the output waveform of high frequency transformer secondary coil is converted to square-wave signal feed back to microprocessor carry out counting process;
During counterclockwise motor inertial rotation, the power-off of A relay, the A normally-closed contact of A relay closes; The power-off of B relay, the B normally-closed contact of B relay closes; Motor inertial rotation produce induced current be coupled to secondary coil by the primary coil of high frequency transformer, filtering/shaping circuit the output waveform of secondary coil is converted to square-wave signal feed back to microprocessor carry out counting process;
During motor rotation blockage, the stall sample circuit fluctuation signal that skyrocketed by the heavy DC flowing through stall sampling resistor feeds back to microprocessor and carries out stall process after analog-to-digital conversion.
Signal feedback to the microprocessor that electrical power rotates and inertial rotation produces is carried out counting process by switching circuit by this device, avoid the leakage of prior art current type and adopt the drawback high with Hall-type cost, make the device of the collection electric machine rotation number of turns, reduce cost, ensure that the accurately reliable of counting; This device is also applicable to automotive seat, the precise acquisition of the electric machine rotation number of turns such as skylight.
Beneficial design is expanded
The A relay of this device and B relay also can adopt the motor drive IC device of metal-oxide-semiconductor or other congenerous.Described sampling resistor R also can adopt Chip-R.
Above-mentioned, the present invention adopts the circuit arrangement be made up of microprocessor, filtering/shaping circuit, stall sample circuit, power-switching circuit, stall sampling resistor, switching circuit, wherein, switching circuit is made up of high frequency transformer, motor, A relay, B relay, and automobile power source 12V voltage transitions is that 5V voltage is to microprocessor power supply by power-switching circuit; During work, by Microprocessor S3C44B0X: when electrical power rotates, the electric current of drive motors enters ground through the primary coil of high frequency transformer, motor, B relay through stall sampling resistor by A relay, and the output waveform of high frequency transformer secondary coil is converted to square-wave signal and feeds back to microprocessor and carry out counting and process by filtering/shaping circuit; During motor inertial rotation, motor inertial rotation produce induced current be coupled to secondary coil by the primary coil of high frequency transformer, filtering/shaping circuit the output waveform of secondary coil is converted to square-wave signal feed back to microprocessor carry out counting process; During motor rotation blockage, the heavy DC fluctuation flowing through stall sampling resistor is fed back to microprocessor and carries out stall process by stall sample circuit after analog-to-digital conversion; By switching circuit, signal feedback to the microprocessor that the energising rotation of motor and inertial rotation produce is carried out the technical scheme counting process, overcome prior art and there are poor reliability, problems and shortcomings that cost is high, a kind of circuit arrangement gathering the electric machine rotation number of turns provided, make the device of the collection electric machine rotation number of turns, reach not lossing signal, accurately reliable, the object that reduces costs.
Accompanying drawing explanation
Fig. 1 is a kind of circuit theory schematic diagram gathering the circuit arrangement of the electric machine rotation number of turns of the present invention;
Fig. 2 is a kind of circuit arrangement gathering the electric machine rotation number of turns of the present invention, is operated in the principle schematic that the energising of clockwise motor M rotates tense;
Fig. 3 is a kind of circuit arrangement gathering the electric machine rotation number of turns of the present invention, is operated in the principle schematic of clockwise motor M inertial rotation tense;
Fig. 4 is a kind of circuit arrangement gathering the electric machine rotation number of turns of the present invention, is operated in the principle schematic that the energising of counterclockwise motor M rotates tense;
Fig. 5 is a kind of circuit arrangement gathering the electric machine rotation number of turns of the present invention, is operated in the principle schematic of counterclockwise motor inertial rotation tense;
Below in conjunction with the embodiment in accompanying drawing, the present invention is described in further detail, but should not be construed as any limitation of the invention.
In figure: microprocessor 1, filtering/shaping circuit 2, stall sample circuit 3, power-switching circuit 4, stall sampling resistor R, switching circuit QH, high frequency transformer L, motor M, A relay 5, A normally opened contact 51, A normally-closed contact 52, B relay 6, B normally opened contact 61, B normally-closed contact 62.
Embodiment
Consult Fig. 1 ~ Fig. 5, a kind of circuit arrangement gathering the electric machine rotation number of turns of the present invention, comprise microprocessor 1, filtering/shaping circuit 2, stall sample circuit 3, power-switching circuit 4, stall sampling resistor R, switching circuit QH, wherein: described filtering/shaping circuit 2 is the integrated circuit modules sinusoidal waveform of input being converted to square-wave signal output;
Described stall sample circuit 3 is the analog to digital conversion circuit large DC waveform that skyrockets of input being processed into square-wave signal output;
Described power-switching circuit 4 is vehicle power 12V is converted to the circuit module that 5V voltage powers to microprocessor 1;
Described stall sampling resistor R is the wire resistance of 0.01 Ω;
Described switching circuit QH is made up of high frequency transformer L, motor M, A relay 5, B relay 6, and wherein, described A relay 5 is provided with often to be opened make contact and normally closedly dynamic open contact and be called A normally opened contact 51 and A normally-closed contact 52; Described B relay 6 is provided with often to be opened make contact and normally closedly dynamic open contact and be called B normally opened contact 61, B normally-closed contact 62;
The input of power-switching circuit 4 is connected power-switching circuit 4 output with 12V vehicle power is connected with the power input of microprocessor 1, the earth terminal ground connection of power-switching circuit 4; One end of the solenoid of A relay 5 is connected with 12V vehicle power, the other end of the solenoid of A relay 5 is connected with the first control end of microprocessor 1, the described A normally opened contact 51 of A relay 5 is connected with 12V vehicle power, the described A normally-closed contact 52 of A relay 5 is connected with the upper end of stall sampling resistor R, the lower end ground connection of stall sampling resistor R; One end of the solenoid of B relay 6 is connected with 12V vehicle power, the other end of the solenoid of B relay 6 is connected with the second control end of microprocessor 1, the described B normally opened contact 61 of B relay 6 is connected with 12V vehicle power, and the described B normally-closed contact 62 of B relay 6 is connected with the upper end of stall sampling resistor R; The fixed end of the movable contact spring of A relay 5 is connected with one end of the primary coil of high frequency transformer L, the other end of the primary coil of high frequency transformer L is connected with motor M input, another input of motor M is connected with the fixed end of the movable contact spring of B relay 6, the upper end of the secondary coil of high frequency transformer L is connected with the input of filtering/shaping circuit 2, the lower end of the secondary coil of high frequency transformer L and the earth terminal earth of filtering/shaping circuit 2; The output of filtering/shaping circuit 2 is connected with the first signal input part of microprocessor 1; The input of stall sample circuit 3 is connected with the upper end of stall sampling resistor R, and the output of stall sample circuit 3 is connected with the secondary signal input of microprocessor 1.
Operation principle and beneficial effect
During work, controlled by microprocessor 1:
When clockwise motor M energising rotates, A relay 5 is energized, and the A normally opened contact 51 of A relay 5 closes; B relay 6 power-off, the B normally-closed contact 62 of B relay 6 closes; The electric current of drive motors M enters ground by the closed A normally opened contact 51 of A relay 5 through the primary coil of high frequency transformer L, motor M, B normally-closed contact 62 that B relay 6 is closed, stall sampling resistor R, the current fluctuation of drive motors M is coupled to secondary coil through the primary coil of high frequency transformer L, filtering/shaping circuit 2 output waveform of high frequency transformer L secondary coil is converted to square-wave signal feed back to microprocessor 1 carry out counting process;
During clockwise motor M inertial rotation, A relay 5 power-off, the A normally-closed contact 52 of A relay 5 closes, B relay 6 power-off, and the B normally-closed contact 62 of B relay 6 closes; Motor M inertial rotation produce induced current be coupled to secondary coil by the primary coil of high frequency transformer L, filtering/shaping circuit 2 output waveform of secondary coil is converted to square-wave signal feed back to microprocessor 1 carry out counting process;
When counterclockwise motor M energising rotates, A relay 5 power-off, the A normally-closed contact 52 of A relay 5 closes; B relay 6 is energized, and the B normally opened contact 61 of B relay 6 closes; The electric current of drive motors M enters ground by the closed B normally opened contact 61 of B relay 6 through the primary coil of motor M, high frequency transformer L, A normally-closed contact 52 that A relay 5 is closed, stall sampling resistor R, the current fluctuation of drive motors M is coupled to secondary coil through the primary coil of high frequency transformer L, filtering/shaping circuit 2 output waveform of high frequency transformer L secondary coil is converted to square-wave signal feed back to microprocessor 1 carry out counting process;
During counterclockwise motor inertial rotation, A relay 5 power-off, the A normally-closed contact 52 of A relay 5 closes; B relay 6 power-off, the B normally-closed contact 62 of B relay 6 closes; Motor M inertial rotation produce induced current be coupled to secondary coil by the primary coil of high frequency transformer L, filtering/shaping circuit 2 output waveform of secondary coil is converted to square-wave signal feed back to microprocessor 1 carry out counting process;
During motor M stall, stall sample circuit 3 fluctuation signal that skyrocketed by the heavy DC flowing through stall sampling resistor R feeds back to microprocessor 1 and carries out stall process after analog-to-digital conversion.
Signal feedback to the microprocessor 1 that motor M energising rotates and inertial rotation produces is carried out counting process by switching circuit QH by this device, avoid the leakage of prior art current type and adopt the drawback high with Hall-type cost, make the device of the collection electric machine rotation number of turns, reduce cost, ensure that the accurately reliable of counting; This device is also applicable to automotive seat, the precise acquisition of the electric machine rotation number of turns such as skylight.
Beneficial design is expanded
The A relay 5 of this device and B relay 6 also can adopt the motor drive IC device of metal-oxide-semiconductor or other congenerous.Described sampling resistor R also can adopt Chip-R.
Claims (1)
1. one kind gathers the circuit arrangement of the electric machine rotation number of turns, comprise microprocessor (1), filtering/shaping circuit (2), stall sample circuit (3), power-switching circuit (4), stall sampling resistor (R), switching circuit (QH), it is characterized in that: described filtering/shaping circuit (2) is the integrated circuit modules sinusoidal waveform of input being converted to square-wave signal output;
Described stall sample circuit (3) is the analog to digital conversion circuit large DC waveform that skyrockets of input being processed into square-wave signal output;
Described power-switching circuit (4) is vehicle power 12V is converted to the circuit module that 5V voltage powers to microprocessor (1);
Described stall sampling resistor
be the wire resistance of 0.01 Ω;
Described switching circuit (QH) is made up of high frequency transformer (L), motor (M), A relay (5), B relay (6), wherein, described A relay (5) is provided with and often opens make contact and normally closedly dynamic open contact and be called A normally opened contact (51) and A normally-closed contact (52); Described B relay (6) is provided with often opens make contact and normally closedly dynamic open contact and be called B normally opened contact (61), B normally-closed contact (62);
The input of power-switching circuit (4) is connected power-switching circuit (4) output with 12V vehicle power is connected with the power input of microprocessor (1), the earth terminal ground connection of power-switching circuit (4); One end of the solenoid of A relay (5) is connected with 12V vehicle power, the other end of the solenoid of A relay (5) is connected with the first control end of microprocessor (1), the described A normally opened contact (51) of A relay (5) is connected with 12V vehicle power, the described A normally-closed contact (52) of A relay (5) is connected with the upper end of stall sampling resistor (R), the lower end ground connection of stall sampling resistor (R); One end of the solenoid of B relay (6) is connected with 12V vehicle power, the other end of the solenoid of B relay (6) is connected with the second control end of microprocessor (1), the described B normally opened contact (61) of B relay (6) is connected with 12V vehicle power, and the described B normally-closed contact (62) of B relay (6) is connected with the upper end of stall sampling resistor (R); The fixed end of the movable contact spring of A relay (5) is connected with one end of the primary coil of high frequency transformer (L), the other end of the primary coil of high frequency transformer (L) is connected with an input of motor (M), another input of motor (M) is connected with the fixed end of the movable contact spring of B relay (6), the upper end of the secondary coil of high frequency transformer (L) is connected with the input of filtering/shaping circuit (2), the lower end of the secondary coil of high frequency transformer L and the earth terminal earth of filtering/shaping circuit (2); The output of filtering/shaping circuit (2) is connected with the first signal input part of microprocessor (1); The input of stall sample circuit (3) is connected with the upper end of stall sampling resistor (R), and the output of stall sample circuit (3) is connected with the secondary signal input of microprocessor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510496686.2A CN105048930A (en) | 2015-08-06 | 2015-08-06 | Circuit device for acquiring number of rotating circles of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510496686.2A CN105048930A (en) | 2015-08-06 | 2015-08-06 | Circuit device for acquiring number of rotating circles of motor |
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| CN105048930A true CN105048930A (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510496686.2A Pending CN105048930A (en) | 2015-08-06 | 2015-08-06 | Circuit device for acquiring number of rotating circles of motor |
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| CN (1) | CN105048930A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107272466A (en) * | 2017-07-28 | 2017-10-20 | 天津陆耐酷车科技有限公司 | A kind of seat and its adjusting method |
| CN109698650A (en) * | 2019-01-09 | 2019-04-30 | 宁波双林汽车部件股份有限公司 | It is a kind of not lose several ripple method data acquisition circuit devices |
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Application publication date: 20151111 |