CN212875697U - Speed regulation control circuit and seat - Google Patents
Speed regulation control circuit and seat Download PDFInfo
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- CN212875697U CN212875697U CN202021957984.XU CN202021957984U CN212875697U CN 212875697 U CN212875697 U CN 212875697U CN 202021957984 U CN202021957984 U CN 202021957984U CN 212875697 U CN212875697 U CN 212875697U
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Abstract
The embodiment of the utility model discloses a speed regulation control circuit and a seat, wherein the speed regulation control circuit comprises a control circuit, a motor rotating speed regulating circuit and a Hall acquisition circuit; the control circuit is used for controlling the motor rotating speed adjusting circuit so as to adjust the position and the speed of an object to be adjusted, which is connected with the motor; the Hall acquisition circuit comprises a first Hall element, a second Hall element, a first Hall acquisition module and a second Hall acquisition module; the Hall acquisition circuit is used for determining the running direction of the motor according to the collected Hall signals of the motor and counting the revolution of the motor. The embodiment of the utility model provides a technical scheme can carry out accurate judgement to the traffic direction of motor through two hall acquisition circuit, avoids influencing user experience because of the stroke that leaks the meter or the miscounting to hall signal caused the seat changes.
Description
Technical Field
The embodiment of the utility model provides a relate to automatic control technical field, especially relate to a speed governing control circuit and seat.
Background
With the rapid development of intelligent technology, intelligent automatic control technology is widely applied.
In some automobiles with higher automation degree, the position of the automobile seat can be adjusted by the motor arranged at each part of the seat, for example, the position of the seat can be adjusted by controlling the motor to rotate forwards or backwards. However, in the prior art, the running direction of the motor is usually identified by adopting a software identification position inside the single chip microcomputer, and when the motor runs to a locked-rotor position, the running direction of the motor cannot be accurately judged, so that the stroke of the seat is changed, and further the function of the seat is disabled.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a speed governing control circuit and seat, effectual solution when carrying out position control to the seat, can't carry out the problem of accurate discernment to the traffic direction of motor.
In a first aspect, an embodiment of the present invention provides a speed control circuit, include: the control circuit, the motor rotating speed regulating circuit and the Hall acquisition circuit;
the control circuit comprises a power supply end, a first input end, a second input end and an output end, the power supply end of the control circuit is connected with a first power supply voltage, the output end of the control circuit is connected with the input end of the motor rotating speed adjusting circuit, the output end of the motor rotating speed adjusting circuit is connected with the motor, and the control circuit is used for controlling the motor rotating speed adjusting circuit so as to adjust the position and the speed of an object to be adjusted, which is connected with the motor;
the Hall acquisition circuit comprises a first Hall element, a second Hall element, a first Hall acquisition module and a second Hall acquisition module;
the input end of the first Hall acquisition module is connected with the motor through the first Hall element, the output end of the first Hall acquisition module is connected with the first input end of the control circuit, the input end of the second Hall acquisition module is connected with the motor through the second Hall element, and the output end of the second Hall acquisition module is connected with the second input end of the control circuit;
the Hall acquisition circuit is used for determining the running direction of the motor according to the collected Hall signal of the motor and counting the revolution of the motor.
Optionally, the first hall acquisition module includes a first filter capacitor, a first diode, a first current limiting resistor, a first pull-up resistor, and a second filter capacitor;
the first end of the first filter capacitor is connected with the first Hall element, the second end of the first filter capacitor is grounded, the first end of the first diode is connected with the first end of the first filter capacitor, the second end of the first diode is connected with the first input end of the control circuit through the first current-limiting resistor, the first end of the second filter capacitor is connected with the first input end of the control circuit, the second end of the second filter capacitor is grounded, the first end of the first pull-up resistor is connected to the first power voltage, and the second end of the first pull-up resistor is connected with the second end of the first diode;
the second Hall acquisition module comprises a third filter capacitor, a second diode, a second current-limiting resistor, a second pull-up resistor and a fourth filter capacitor;
the first end of the third filter capacitor is connected with the second Hall element, the second end of the third filter capacitor is grounded, the first end of the second diode is connected with the first end of the third filter capacitor, the second end of the second diode is connected with the second input end of the control circuit through the second current-limiting resistor, the first end of the fourth filter capacitor is connected with the second input end of the control circuit, the second end of the fourth filter capacitor is grounded, the first end of the second pull-up resistor is connected into the first power voltage, and the second end of the second pull-up resistor is connected with the second end of the second diode.
Optionally, a phase difference of a preset angle exists between a first hall signal output by the first hall acquisition module and a second hall signal output by the second hall acquisition module.
Optionally, the control circuit is configured to determine the operation direction of the motor according to a first hall signal output by the first hall acquisition module and a second hall signal output by the second hall acquisition module.
Optionally, the control circuit is configured to count the number of revolutions of the motor according to a first hall signal output by the first hall acquisition module or a second hall signal output by the second hall acquisition module.
Optionally, the power supply further comprises a hall power supply circuit;
the Hall power supply circuit comprises an input end and an output end, the input end of the Hall power supply circuit is connected with a second power supply voltage, and the output end of the Hall power supply circuit is connected with the first Hall element and the second Hall element respectively.
Optionally, the hall power circuit includes a first triode, a second triode, a first switch tube, a third current-limiting resistor, a third pull-up resistor, a first voltage-regulator tube, a third diode, and a fifth filter capacitor;
the first end of the third current-limiting resistor is connected to the second power supply voltage, the second end of the third current-limiting resistor is connected to the first end of the first triode, the second end of the first triode is connected to the second power supply voltage, the third end of the first triode is connected to the first end of the third pull-up resistor and the first end of the first switch tube, the second end of the first switch tube is connected to the second end of the third current-limiting resistor, the third end of the first switch tube outputs a hall voltage through the third diode, the second end of the third pull-up resistor is connected to the second end of the third current-limiting resistor, the first end of the first voltage-stabilizing tube is connected to the first end of the first switch tube, and the second end of the first voltage-stabilizing tube is connected to the second end of the first switch tube;
the first end of the second triode is connected with the control end of the control circuit, the second end of the second triode is connected with the first end of the first switch tube, the third end of the second triode is grounded, the first end of the fifth filter capacitor is connected with the second end of the third diode, the first end of the third diode is connected with the third end of the first switch tube, and the second end of the fifth filter capacitor is grounded.
Optionally, the motor speed adjusting circuit comprises a driving circuit and a speed adjusting circuit; the output end of the control circuit comprises a first output end and a second output end;
the input end of the driving circuit is connected with the first output end of the control circuit, the output end of the driving circuit is connected with the motor, the input end of the speed regulating circuit is connected with the second output end of the control circuit, and the output end of the speed regulating circuit is connected with the control end of the driving circuit.
Optionally, the power supply conversion circuit is further included;
the input end of the power supply conversion circuit is connected with the power bus, the first output end of the power supply conversion circuit is connected with the power supply end of the control circuit, and the second output end of the power supply conversion circuit is connected with the input end of the Hall power supply circuit.
In a second aspect, the embodiment of the present invention further provides a seat, where the seat includes the speed control circuit of the first aspect.
An embodiment of the utility model provides a speed governing control circuit and seat for at the speed governing in-process, the traffic direction of motor can be accurately confirmed. The embodiment of the utility model provides a speed regulation control circuit includes control circuit, motor speed regulating circuit and hall acquisition circuit; the control circuit comprises a power supply end, a first input end, a second input end and an output end, the power supply end of the control circuit is connected with a first power supply voltage, the output end of the control circuit is connected with the input end of the motor rotating speed adjusting circuit, the output end of the motor rotating speed adjusting circuit is connected with the control end of the motor, and the control circuit is used for controlling the motor rotating speed adjusting circuit to adjust the rotating speed of the motor; the Hall acquisition circuit comprises a first Hall element, a second Hall element, a first Hall acquisition module and a second Hall acquisition module; the input end of the first Hall acquisition module is connected with a first Hall signal output end of the motor through a first Hall element, the output end of the first Hall acquisition module is connected with a first input end of the control circuit, the input end of the second Hall acquisition module is connected with a second Hall signal output end of the motor through a second Hall element, and the output end of the second Hall acquisition module is connected with a second input end of the control circuit; the Hall acquisition circuit is used for determining the running direction of the motor according to the collected Hall signals of the motor and counting the revolution of the motor. In the process of motor operation, the hall signal of motor is gathered through the hall collection module that two hall element and each hall element correspond to hall collection circuit, control circuit adjusts the rotational speed and the revolution of motor based on the hall signal control motor speed regulating circuit that hall collection circuit gathered, can carry out accurate judgement to the traffic direction of motor through two hall collection circuit, avoid to miss the meter or the miscounting of hall signal and cause the stroke of seat to change, influence user experience.
Drawings
Fig. 1 is a schematic structural diagram of a speed regulation control circuit provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another speed control circuit provided in the embodiment of the present invention;
fig. 3 is a timing diagram illustrating a forward rotation of a motor according to an embodiment of the present invention;
fig. 4 is a timing diagram of a reverse rotation of a motor according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another speed control circuit provided in the embodiment of the present invention;
fig. 6 is a schematic structural diagram of another speed control circuit according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the prior art, a single hall element counting scheme is generally adopted to detect the number of revolutions of a rotor of a motor, and the position of a seat is determined according to a counting value. Because the running direction of the motor is identified by the identification position of the software in the single chip microcomputer, when the motor runs to the locked-rotor position and stops, the identification position of the motor in the software is cleared, so that the single chip microcomputer cannot determine whether the motor rotates forwards or backwards, the Hall number is wrongly recorded, and the stroke of the seat is changed. For example, when a car runs in a violent jolt process, a motor rotor corresponding to a seat shakes, or when a motor runs to a locked-rotor position in the seat adjusting process, a phenomenon that a hall element counts more or less is caused, so that a counting value and an actual position of the seat deviate, the stroke of the seat changes, the experience of a user is influenced, and the function failure of the seat can be caused under a severe condition.
In view of this, the embodiment of the utility model provides a speed governing control circuit and seat for in the speed governing process, can accurate definite motor's traffic direction. The embodiment of the utility model provides a speed regulation control circuit includes control circuit, motor speed regulating circuit and hall acquisition circuit; the control circuit comprises a power supply end, a first input end, a second input end and an output end, the power supply end of the control circuit is connected with a first power supply voltage, the output end of the control circuit is connected with the input end of the motor rotating speed adjusting circuit, the output end of the motor rotating speed adjusting circuit is connected with the control end of the motor, and the control circuit is used for controlling the motor rotating speed adjusting circuit so as to adjust the rotating speed of the motor; the Hall acquisition circuit comprises a first Hall element, a second Hall element, a first Hall acquisition module and a second Hall acquisition module; the input end of the first Hall acquisition module is connected with a first Hall signal output end of the motor through a first Hall element, the output end of the first Hall acquisition module is connected with a first input end of the control circuit, the input end of the second Hall acquisition module is connected with a second Hall signal output end of the motor through a second Hall element, and the output end of the second Hall acquisition module is connected with a second input end of the control circuit; the Hall acquisition circuit is used for determining the running direction of the motor according to the collected Hall signals of the motor and counting the revolution of the motor. In the process of motor operation, the hall signal of motor is gathered through the hall collection module that two hall element and each hall element correspond to hall collection circuit, control circuit adjusts the rotational speed and the revolution of motor based on the hall signal control motor speed regulating circuit that hall collection circuit gathered, can carry out accurate judgement to the traffic direction of motor through two hall collection circuit, avoid to miss the meter or the miscounting of hall signal and cause the stroke of seat to change, influence user experience.
Fig. 1 is the embodiment of the utility model provides a speed governing control circuit's structural schematic diagram, refer to fig. 1, the embodiment of the utility model provides a speed governing control circuit includes: the control circuit 10, the motor speed regulating circuit 20 and the Hall acquisition circuit 30; the control circuit 10 comprises a power supply end A1, a first input end A2, a second input end A3 and an output end A4, the power supply end A1 of the control circuit 10 is connected to a first power supply voltage VCC1, the output end A4 of the control circuit 10 is connected with an input end B1 of the motor rotating speed adjusting circuit 20, the output end B2 of the motor rotating speed adjusting circuit 20 is connected with the motor 40, and the control circuit 10 is used for controlling the motor rotating speed adjusting circuit 20 to further adjust the position and the speed of an object to be adjusted, which is connected with the motor 40; the hall acquisition circuit 30 comprises a first hall element 31, a second hall element 32, a first hall acquisition module 301 and a second hall acquisition module 302; an input end E11 of the first Hall acquisition module 301 is connected with the motor 40 through the first Hall element 31, an output end E12 of the first Hall acquisition module 301 is connected with a first input end A2 of the control circuit 10, an input end E21 of the second Hall acquisition module 302 is connected with the motor 40 through the second Hall element 32, and an output end E22 of the second Hall acquisition module 302 is connected with a second input end A3 of the control circuit 10; the hall acquisition circuit 30 is used for determining the operation direction of the motor 40 according to the acquired hall signal of the motor 40 and counting the number of revolutions of the motor 40.
Specifically, the hall sensing circuit 30 is a dual hall sensing circuit, and includes a first hall element 31 and a second hall element 32, and the first hall element 31 and the second hall element 32 may be disposed on a circuit board connected to the motor 40 at a predetermined circle center angle. The hall collection circuit 30 further includes a first hall collection module 301 and a second hall collection module 302, the first hall collection module 301 and the second hall collection module 302 are respectively connected with the first hall element 31 and the second hall element 32 for collecting hall signals (rotor position signals) of the motor 40, and the motor 40 is connected with the object to be adjusted for driving the position and speed of the object to be adjusted. For example, the first hall collecting module 301 collects the rotor position of the motor 40 through the first hall element 31 and outputs a first hall signal, the second hall collecting module 302 collects the rotor position of the motor 40 through the second hall element 32 and outputs a second hall signal, and a phase difference of a preset circle center angle exists between the first hall signal and the second hall signal. The control circuit 10 determines the operation direction of the motor 40 at this time based on the received first hall signal and the second hall signal, and counts the number based on the rising edge or the falling edge of the first hall signal or the second hall signal. The output end a4 of the control circuit 10 is further connected to the input end B1 of the motor speed adjusting circuit 20, and when the control circuit 10 receives a position adjusting signal sent by an external communication circuit (not shown), such as a key circuit, the control circuit 10 analyzes the received position adjusting signal to determine a position control signal, where the position control signal is a hall signal collected by the hall collecting circuit 30. For example, the control circuit 10 may determine the current operation direction of the motor 40 according to a logical operation between the first hall signal and the second hall signal; the rotor of the motor 40 generates a count for each 45 ° rotation, and the number of rotors is counted in a square wave edge triggered (rising edge triggered or falling edge triggered) manner. The rotor rotates one circle to generate 4 counts, and since the counting is performed by adopting a rising edge triggering (or falling edge triggering), the number of times is counted when the rotor rotates one circle, and taking the motor 40 to drive the seat as an example, the specific stroke change of the object to be adjusted can be determined according to the counting value and the running direction of the motor 40. In addition, the control circuit 10 can also control the motor speed adjusting circuit 20 to adjust the speed of the motor according to the speed control signal sent by the external communication circuit, so that the adjusting speed can be controlled in the process of adjusting the position of the object to be adjusted.
The embodiment of the utility model provides a technical scheme gathers the first hall signal of electric motor rotor position through first hall element and first hall collection module, gather the second hall signal of electric motor rotor position through second hall element and second hall collection module, control circuit confirms the traffic direction of motor according to the logical operation relation between received first hall signal and the second hall signal, and confirm the revolution of motor according to first hall signal or second hall signal, when control circuit received position control signal and speed regulation signal, control circuit adjusts the position and the governing speed of the thing of treating that are connected with the motor according to first hall signal and the second hall signal that hall collection circuit gathered. Compared with the prior art, the embodiment of the utility model provides a mode through the two hall collections that adopt first hall element and second hall element, the traffic direction of definite motor that can be accurate, effectual hourglass of having avoided the motor revolution counts and the miscounting to can accurate control treat the position of regulation thing, be favorable to improving user's experience effect.
It should be noted that, the connection mentioned in the embodiment of the present invention may be an electrical connection, and may also be a mechanical fixed connection, and the embodiment of the present invention does not limit this.
Fig. 2 is a schematic structural diagram of another speed control circuit provided in the embodiment of the present invention. Fig. 2 is a detailed structure of the hall acquisition circuit in fig. 1, and referring to fig. 2, on the basis of the above embodiment, the first hall acquisition module 301 includes a first filter capacitor C1, a first diode D1, a first current limiting resistor RX1, a first pull-up resistor R1, and a second filter capacitor C2; a first end of a first filter capacitor C1 is connected to the first hall element 31, a second end of the first filter capacitor C1 is grounded, a first end of a first diode D1 is connected to a first end of the first filter capacitor C1, a second end of the first diode D1 is connected to a first input end a2 of the control circuit 10 through a first current-limiting resistor RX1, a first end of a second filter capacitor C2 is connected to a first input end a2 of the control circuit 10, a second end of a second filter capacitor C2 is grounded, a first end of a first pull-up resistor R1 is connected to a first power supply voltage VCC1, and a second end of the first pull-up resistor R1 is connected to a second end of the first diode D1; the second hall acquisition module 302 comprises a third filter capacitor C3, a second diode D2, a second current limiting resistor RX2, a second pull-up resistor R2 and a fourth filter capacitor C4; a first end of the third filter capacitor C3 is connected to the second hall element 32, a second end of the third filter capacitor C3 is grounded, a first end of the second diode D2 is connected to a first end of the third filter capacitor C3, a second end of the second diode D2 is connected to the second input end A3 of the control circuit 10 through the second current-limiting resistor RX2, a first end of the fourth filter capacitor C4 is connected to the second input end A3 of the control circuit 10, a second end of the fourth filter capacitor C4 is grounded, a first end of the second pull-up resistor R2 is connected to the first power supply voltage VCC1, and a second end of the second pull-up resistor R2 is connected to a second end of the second diode D2.
Specifically, the first hall element 31 may be a hall sensor, which is disposed on a circuit board connected to the motor 40, and when the motor 40 rotates, the first hall element 31 outputs a corresponding hall signal. The first filter capacitor C1 and the second filter capacitor C2 are used for filtering noise waves in the hall acquisition circuit 30, and the first diode D1 is an anti-reverse diode and used for preventing the first acquisition module 301 from being reverse connected to cause component damage. The first current limiting resistor RX1 is used for limiting the current of the collected hall signal, so as to prevent the control circuit 10 from being damaged due to the fact that the current exceeds the preset current value of the control circuit 10. The first power voltage VCC is connected to the first hall collecting module 301 through the first pull-up resistor R1, wherein the first power voltage VCC1 is a voltage output by a voltage stabilizing chip (not shown), and cannot fluctuate due to interference of external environmental factors, because the hall signal collected by the hall collecting circuit 30 is counted by a software program inside the control circuit 10, when the first power voltage VCC1 fluctuates, the collected hall signal changes, and when the voltage amplitude of the collected hall signal exceeds a software setting value, a meter leakage phenomenon occurs, therefore, the hall signal collected by the hall collecting circuit 30 is identified by setting the first power voltage VCC1 to be a stable voltage value (not fluctuating due to external interference), which is beneficial for the control circuit 10 to identify the hall signal collected by the hall collecting circuit 30. The specific working principle of the first hall collection module 301 and the second hall collection module 302 is the same, and here, the first hall collection module 301 is taken as an example for specific explanation, and the working principle of the second hall collection module 302 is not described herein again.
Optionally, the first hall collecting module 301 outputs a first hall signal according to the rotor position signal of the motor 40 collected by the first hall element 31, and the second hall collecting module 302 outputs a second hall signal according to the rotor position signal of the motor 40 collected by the second hall element 32. The first hall signal output by the first hall acquisition module and the second hall signal output by the second hall acquisition module have a phase difference of a preset angle, and the phase difference is set between the first hall signal and the second hall signal, so that the running direction of the motor 40 can be conveniently determined. Two magnets are arranged on a rotor of the motor 40, the first hall element 31 and the second hall element 32 can be arranged on corresponding circuit boards, a position signal of the rotor of the motor 40 is obtained in an induction mode, and the first hall acquisition module 301 and the second hall acquisition module 302 respectively output a first hall acquisition signal and a second hall acquisition signal. The control circuit 10 determines the operation direction of the motor 10 according to the first hall signal output by the first hall acquisition module 301 and the second hall signal output by the second hall acquisition module 302. Fig. 3 is a timing diagram of forward rotation of a motor provided by the embodiment of the present invention, and fig. 4 is a timing diagram of reverse rotation of a motor provided by the embodiment of the present invention. On the basis of the above technical solutions, referring to fig. 3 and 4, the operation direction of the rotor of the motor 40 is determined based on the rising edge of the collected hall signal. When the motor 40 rotates forward, the rising edge of the first hall signal HALLS1 corresponds to the low level of the second hall signal HALLS2, the falling edge of the first hall signal HALLS1 corresponds to the high level of the second hall signal HALLS2, and a 45 ° phase difference exists between the rising edge of the first hall signal HALLS1 and the rising edge of the second hall signal HALLS 2. It is precisely because of the phase difference between the first hall signal HALLS1 and the second hall signal HALLS2 that the positive and negative rotation of the electric machine 40 can be determined by a logical operation between the first hall signal HALLS1 and the second hall signal HALLS 2. When the motor 40 rotates reversely, the rising edge of the first hall signal HALLS1 corresponds to the high level of the second hall signal HALLS2, the falling edge of the first hall signal HALLS1 corresponds to the low level of the second hall signal HALLS2, and a phase difference of 45 ° exists between the rising edge of the first hall signal HALLS1 and the falling edge of the second hall signal HALLS 2. Further, the high level and the low level of the hall signal are set to 1 and 0, and the rising edge of the first hall signal HALLS1 can only correspond to the high level or the low level of the second hall signal HALLS2, since the phase difference exists between the first hall signal HALLS1 and the second hall signal HALLS2 based on the rising edge of the captured first hall signal HALLS 1. When the control circuit 10 captures a rising edge of the first hall signal HALLS1, it is determined that when the rising edge of the first hall signal HALLS1 corresponds to a low level of the second hall signal HALLS2, that is, the HALLS1 is 1& HALLS2 is 0, and the logical operation result is 0, it is determined that the motor 40 is rotating forward; when the rising edge of the first hall signal HALLS1 corresponds to the high level of the second hall signal HALLS2, that is, HALLS1 is 1& HALLS2 is 1, and the logical operation result is 1, it is determined that the motor 40 is in reverse rotation. After determining the operating direction of the motor 40, the second hall signal hals 2 is used to count the number of revolutions of the motor (count the number of hall), for example, the motor 40 rotates forward, when the control circuit 10 captures the falling edge of the second hall signal hals 2, the control circuit 10 performs hall + + operation, and the count is increased by one; when the motor 40 is rotating in reverse, the control circuit 10 performs a hall-operation, counting by one, when the control circuit 10 captures the falling edge of the second hall signal HALLS 2. The control circuit 10 sends a position control signal to the motor speed adjusting circuit 20 through the counting value so as to adjust the position of the object to be adjusted.
Of course, in other embodiments, the falling edge of the first hall signal HALLS1 may also be used as a reference; or the rising edge or the falling edge of the second hall signal HALLS2 is used as a reference (the first hall signal HALLS1 is used for counting correspondingly), which is not limited by the embodiment of the present invention.
The embodiment of the utility model provides a technical scheme constitutes two hall collection circuits through first hall element and first hall collection module, second hall element and second hall collection module, and first hall collection module exports first hall signal, and second hall collection module exports second hall signal. The control module determines the running direction of the motor according to the logic operation between the first Hall signal and the second signal, and counts the revolution (Hall number) of the motor according to the first Hall signal or the second Hall signal, so that the position of an object to be regulated, which is connected with the motor, is regulated. When the motor runs to the locked-rotor position, a plurality of Hall signals generated by the motor are all high levels or low levels, no edge is output, therefore, the control circuit cannot capture the triggering edge of the Hall signals, the control circuit 10 does not count, the counting accuracy is guaranteed, the phenomenon of missing counting or error counting cannot be caused, and the precision of position adjustment of the object to be adjusted is improved.
Fig. 5 is a schematic structural diagram of another speed control circuit according to an embodiment of the present invention. Referring to fig. 5, on the basis of the above technical solutions, the speed control circuit provided in the embodiment of the present invention further includes a hall power circuit 50; the hall power supply circuit 50 includes an input terminal and an output terminal, the input terminal of the hall power supply circuit 50 is connected to the second power supply voltage VCC2, and the output terminal of the hall power supply circuit 50 is connected to the first hall element 31 and the second hall element 32, respectively. The hall power supply circuit 50 is configured to provide a power supply voltage to the hall element. The hall power supply circuit 50 comprises a first triode Q1, a second triode Q2, a first switching tube T1, a third current-limiting resistor RX3, a third pull-up resistor R3, a first voltage-stabilizing tube VD1, a third diode D3 and a fifth filter capacitor C5; a first end of a third current-limiting resistor RX3 is connected to a second power supply voltage VCC2, a second end of a third current-limiting resistor RX3 is connected to a first end of a first triode Q1, a second end of the first triode Q1 is connected to a second power supply voltage VCC2, a third end of a first triode Q1 is connected to a first end of a third pull-up resistor R3 and a first end of a first switch tube T1, a second end of a first switch tube T1 is connected to a second end of the third current-limiting resistor RX3, a third end of the first switch tube T1 outputs a hall voltage through a third diode D3, a second end of the third pull-up resistor R3 is connected to a second end of the third current-limiting resistor RX3, a first end of a first voltage regulator tube VD1 is connected to a first end of the first switch tube T1, and a second end of the first voltage regulator tube VD1 is connected to a second end of the first switch tube T1; the first end of the second triode Q2 is connected with the control end a5 of the control circuit 10, the second end of the second triode Q2 is connected with the first end of the first switch tube T1, the third end of the second triode Q2 is grounded, the first end of the fifth filter capacitor C5 is connected with the second end of the third diode D3, the first end of the third diode D3 is connected with the third end of the first switch tube T1, and the second end of the fifth filter capacitor C5 is grounded.
The hall power supply circuit 50 converts the second power supply voltage VCC2 into a power supply voltage of the hall collecting circuit 30, for example, to provide a power supply voltage for the hall element. The first switch tube T1 is a P-type tube, the control end a5 of the control circuit 10 outputs a clock signal to the first end of the second triode Q2, and the second triode Q2 is used for amplifying the clock signal output by the control short circuit 10 to enhance the driving capability, so as to drive the first switch tube T1 to be turned on, thereby realizing the function of voltage conversion. The first voltage regulator VD1 is used to keep the voltage of the first terminal and the second terminal of the first switch tube T1 stable.
It should be noted that fig. 5 only exemplarily shows a main circuit diagram of the hall power circuit 50, and in practical applications, necessary components (e.g., a bias resistor at the first end of the first transistor Q1 and the second transistor Q2, etc.) may be added according to circuit requirements.
Fig. 6 is a schematic structural diagram of another speed control circuit provided in an embodiment of the present invention, referring to fig. 6, as an optional implementation manner of the embodiment of the present invention, an object to be adjusted may be an automobile seat, and the motor speed adjusting circuit 20 includes a driving circuit 21 and a speed adjusting circuit 22; the output terminals of the control circuit 10 include a first output terminal a41 and a second output terminal a 42; an input end F1 of the drive circuit 21 is connected with a first output end A41 of the control circuit 10, an output end F2 of the drive circuit 21 is connected with the motor 40, an input end G1 of the speed regulation circuit 22 is connected with a second output end A42 of the control circuit 10, and an output end G2 of the speed regulation circuit 22 is connected with a control end F3 of the drive circuit 21.
Referring to fig. 6, an embodiment of the present invention provides a specific working principle of a speed control circuit as follows:
the control circuit 10 may be a single chip microcomputer, and is configured to determine the operation direction of the motor 40 according to the first hall signal and the second hall signal acquired by the hall acquisition circuit 30, perform counting according to the first hall signal and the second hall signal, and associate an obtained count value with a movement stroke of the car seat. That is, when the control circuit 10 receives the seat adjustment signal (including the position control signal and the speed control signal) output by the external communication circuit, the control circuit 10 determines the operation direction of the motor 40 by analyzing the hall signal of the motor 40 collected by the hall collecting circuit 30, and counts the number of the hall signals to determine the movement stroke of the seat. The hall acquisition circuit 30 is a double-hall acquisition circuit, and comprises a first hall element 31 and a second hall element 32, wherein the first hall element 31 and the second hall element 32 can be arranged on a circuit board connected with the motor 40 at a preset circle center angle, and the acquisition mode of the hall acquisition circuit 30 is acquisition through a capture port, so that the hall change generated by the high-speed motor can be acquired. The first hall collecting module 301 and the second hall collecting module 302 respectively output a first hall collecting signal and a second hall collecting signal, and set the high level of the hall signal to be 1 and the low level to be 0, so as to capture the rising edge of the first hall signal HALLS1 as a reference, and because a phase difference exists between the first hall signal HALLS1 and the second hall signal HALLS2, the rising edge of the first hall signal HALLS1 can only correspond to the high level or the low level of the second hall signal HALLS 2. When the control circuit 10 captures a rising edge of the first hall signal HALLS1, it is determined that when the rising edge of the first hall signal HALLS1 corresponds to a low level of the second hall signal HALLS2, that is, the HALLS1 is 1& HALLS2 is 0, and the logical operation result is 0, it is determined that the motor 40 is rotating forward; when the rising edge of the first hall signal HALLS1 corresponds to the high level of the second hall signal HALLS2, that is, HALLS1 is 1& HALLS2 is 1, and the logical operation result is 1, it is determined that the motor 40 is in reverse rotation. After determining the direction of operation of the motor 40, the second hall signal HALLS2 is used to count the number of revolutions of the motor, and the control circuit 10 sends a position control signal to the drive circuit 21 via the count value, so that the motor is driven to adjust the position of the vehicle seat. When the control circuit 10 receives the speed control signal, the control speed regulating circuit 22 generates a rotating speed regulating signal, and the driving circuit 21 drives the rotating speed of the motor 40 to change according to the rotating speed regulating signal, so that the speed of the seat can be regulated in the process of regulating the position of the seat.
Optionally, the speed control circuit provided by the embodiment of the present invention further includes a power conversion circuit; the input end of the power supply conversion circuit is connected with the power bus, the first output end of the power supply conversion circuit is connected with the power supply end of the control circuit, and the second output end of the power supply conversion circuit is connected with the input end of the Hall power supply circuit. Aiming at the condition that the object to be regulated is the automobile seat, the power bus is the power bus of the automobile, the power conversion circuit can convert the voltage on the power bus into a first power voltage and a second power voltage, and the first power voltage and the second power voltage respectively provide power voltages for the control circuit and the Hall power circuit. The embodiment of the utility model provides a do not do the restriction to the concrete numerical value of power bus voltage, first mains voltage and second mains voltage, technical personnel in the field can set for according to actual conditions.
Furthermore, the embodiment of the utility model provides a still provide a seat, include the embodiment of the utility model provides an in mentioned speed governing control circuit, this seat carries out the regulation of position and speed through speed governing control circuit, consequently this seat possess with the utility model provides a technical effect that speed governing control circuit is the same, no longer gives unnecessary details here.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A speed control circuit, comprising: the control circuit, the motor rotating speed regulating circuit and the Hall acquisition circuit;
the control circuit comprises a power supply end, a first input end, a second input end and an output end, the power supply end of the control circuit is connected with a first power supply voltage, the output end of the control circuit is connected with the input end of the motor rotating speed adjusting circuit, the output end of the motor rotating speed adjusting circuit is connected with the motor, and the control circuit is used for controlling the motor rotating speed adjusting circuit so as to adjust the position and the speed of an object to be adjusted, which is connected with the motor;
the Hall acquisition circuit comprises a first Hall element, a second Hall element, a first Hall acquisition module and a second Hall acquisition module;
the input end of the first Hall acquisition module is connected with the motor through the first Hall element, the output end of the first Hall acquisition module is connected with the first input end of the control circuit, the input end of the second Hall acquisition module is connected with the motor through the second Hall element, and the output end of the second Hall acquisition module is connected with the second input end of the control circuit;
the Hall acquisition circuit is used for determining the running direction of the motor according to the collected Hall signal of the motor and counting the revolution of the motor.
2. The speed regulation control circuit of claim 1, wherein the first hall collection module comprises a first filter capacitor, a first diode, a first current limiting resistor, a first pull-up resistor, and a second filter capacitor;
the first end of the first filter capacitor is connected with the first Hall element, the second end of the first filter capacitor is grounded, the first end of the first diode is connected with the first end of the first filter capacitor, the second end of the first diode is connected with the first input end of the control circuit through the first current-limiting resistor, the first end of the second filter capacitor is connected with the first input end of the control circuit, the second end of the second filter capacitor is grounded, the first end of the first pull-up resistor is connected to the first power voltage, and the second end of the first pull-up resistor is connected with the second end of the first diode;
the second Hall acquisition module comprises a third filter capacitor, a second diode, a second current-limiting resistor, a second pull-up resistor and a fourth filter capacitor;
the first end of the third filter capacitor is connected with the second Hall element, the second end of the third filter capacitor is grounded, the first end of the second diode is connected with the first end of the third filter capacitor, the second end of the second diode is connected with the second input end of the control circuit through the second current-limiting resistor, the first end of the fourth filter capacitor is connected with the second input end of the control circuit, the second end of the fourth filter capacitor is grounded, the first end of the second pull-up resistor is connected into the first power voltage, and the second end of the second pull-up resistor is connected with the second end of the second diode.
3. The speed regulation control circuit of claim 1, wherein a phase difference of a preset angle exists between a first hall signal output by the first hall acquisition module and a second hall signal output by the second hall acquisition module.
4. The speed regulation control circuit of claim 1, wherein the control circuit is configured to determine the operating direction of the motor according to a first hall signal output by the first hall collection module and a second hall signal output by the second hall collection module.
5. The speed regulation control circuit of claim 1, wherein the control circuit is configured to count the number of revolutions of the motor according to a first hall signal output by the first hall collection module or a second hall signal output by the second hall collection module.
6. The speed regulation control circuit of claim 1 further comprising a hall power circuit;
the Hall power supply circuit comprises an input end and an output end, the input end of the Hall power supply circuit is connected with a second power supply voltage, and the output end of the Hall power supply circuit is connected with the first Hall element and the second Hall element respectively.
7. The speed regulation control circuit of claim 6, wherein the Hall power supply circuit comprises a first triode, a second triode, a first switch tube, a third current limiting resistor, a third pull-up resistor, a first voltage regulator tube, a third diode and a fifth filter capacitor;
the first end of the third current-limiting resistor is connected to the second power supply voltage, the second end of the third current-limiting resistor is connected to the first end of the first triode, the second end of the first triode is connected to the second power supply voltage, the third end of the first triode is connected to the first end of the third pull-up resistor and the first end of the first switch tube, the second end of the first switch tube is connected to the second end of the third current-limiting resistor, the third end of the first switch tube outputs a hall voltage through the third diode, the second end of the third pull-up resistor is connected to the second end of the third current-limiting resistor, the first end of the first voltage-stabilizing tube is connected to the first end of the first switch tube, and the second end of the first voltage-stabilizing tube is connected to the second end of the first switch tube;
the first end of the second triode is connected with the control end of the control circuit, the second end of the second triode is connected with the first end of the first switch tube, the third end of the second triode is grounded, the first end of the fifth filter capacitor is connected with the second end of the third diode, the first end of the third diode is connected with the third end of the first switch tube, and the second end of the fifth filter capacitor is grounded.
8. The speed regulation control circuit of claim 1 wherein the motor speed regulation circuit comprises a drive circuit and a speed regulation circuit; the output end of the control circuit comprises a first output end and a second output end;
the input end of the driving circuit is connected with the first output end of the control circuit, the output end of the driving circuit is connected with the motor, the input end of the speed regulating circuit is connected with the second output end of the control circuit, and the output end of the speed regulating circuit is connected with the control end of the driving circuit.
9. The speed regulation control circuit of claim 6 further comprising a power conversion circuit;
the input end of the power supply conversion circuit is connected with the power bus, the first output end of the power supply conversion circuit is connected with the power supply end of the control circuit, and the second output end of the power supply conversion circuit is connected with the input end of the Hall power supply circuit.
10. A seat comprising a speed control circuit as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021957984.XU CN212875697U (en) | 2020-09-09 | 2020-09-09 | Speed regulation control circuit and seat |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021957984.XU CN212875697U (en) | 2020-09-09 | 2020-09-09 | Speed regulation control circuit and seat |
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| CN212875697U true CN212875697U (en) | 2021-04-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113320448A (en) * | 2021-06-01 | 2021-08-31 | 智己汽车科技有限公司 | Seat adjusting method and device and computer readable storage medium |
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- 2020-09-09 CN CN202021957984.XU patent/CN212875697U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113320448A (en) * | 2021-06-01 | 2021-08-31 | 智己汽车科技有限公司 | Seat adjusting method and device and computer readable storage medium |
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