CN113741267B - Software-free seat control circuit capable of setting travel - Google Patents
Software-free seat control circuit capable of setting travel Download PDFInfo
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- CN113741267B CN113741267B CN202111009148.8A CN202111009148A CN113741267B CN 113741267 B CN113741267 B CN 113741267B CN 202111009148 A CN202111009148 A CN 202111009148A CN 113741267 B CN113741267 B CN 113741267B
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- 230000005540 biological transmission Effects 0.000 abstract description 6
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- 238000010586 diagram Methods 0.000 description 4
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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Abstract
The invention discloses a software-free seat control circuit capable of setting a stroke, which comprises a driving unit, a logic circuit, a stroke-settable unit, a driving motor and an angular displacement sensor, wherein the driving motor is connected with a seat through a transmission mechanism to drive the seat to move back and forth along a track, the angular displacement sensor is arranged on an output shaft of the driving motor, the driving unit is respectively connected with the driving motor, the angular displacement sensor and the logic circuit and is used for directly driving and executing an electric mechanism, the logic circuit is respectively connected with the stroke-settable unit, the driving unit and a switch signal, and the stroke-settable unit is connected with the angular displacement sensor. The invention realizes the automatic adjustment and movement of the seat in a pure hardware mode, improves the stability and reduces the uncontrollable risk.
Description
Technical Field
The invention relates to the technical field of aviation equipment, in particular to a software-free seat control circuit capable of setting a stroke.
Background
Because the software authentication process in the aviation field is complex, the invention provides a seat control method without software control, and the seat control method adopts the control method without software to drive a brushless motor to drive the seat to adjust horizontally and vertically.
Disclosure of Invention
The invention aims to solve the technical problems, and provides a software-free seat control circuit capable of setting a stroke, which aims at the defects in the prior art, realizes automatic adjustment and movement of a seat in a pure hardware mode, improves stability and reduces uncontrollable risks.
The technical scheme adopted by the invention for solving the technical problems is as follows:
The utility model provides a but no software seat control circuit of setting stroke, including drive unit, logic circuit, but set up stroke unit, driving motor and angular displacement sensor, driving motor passes through drive mechanism and is connected with the seat, drive seat along track round trip movement, angular displacement sensor sets up on driving motor's output shaft, drive unit is connected with driving motor respectively, angular displacement sensor and logic circuit for direct drive actuating motor, logic circuit respectively with can set up stroke unit and drive unit and switch signal connection, can set up stroke unit and angular displacement sensor and be connected.
According to the technical scheme, the software-free seat control circuit capable of setting the stroke further comprises a stroke-settable unit, and the logic circuit is connected with the angular displacement sensor through the stroke-settable unit.
According to the technical scheme, the settable stroke unit comprises two stroke comparator circuits, namely a front stroke comparator circuit and a rear stroke comparator circuit, and the angular displacement sensor is connected with the logic circuit through the front stroke comparator circuit and the rear stroke comparator circuit.
According to the technical scheme, the front stroke comparator circuit and the rear stroke comparator circuit are both connected with the digital potentiometer.
According to the technical scheme, the logic circuit is also connected with a front switch and a rear switch.
According to the technical scheme, the logic circuit comprises a first NAND gate U2A, a second NAND gate U2B, a third NAND gate U2C, a fourth NAND gate U2D, a fifth NAND gate U3A, a sixth NAND gate U4B, a seventh NAND gate U4C, an eighth NAND gate U4D, a ninth NAND gate U5A, a tenth NAND gate U6A, a first inverter U1A, a second inverter U1B and a third inverter U1C, wherein the input end of the first inverter U1A is connected with one input end of the first NAND gate U2A, two input ends of the tenth NAND gate U6A and one input end of the third NAND gate U2C, and is connected with a front switch, the output signal of the front switch is recorded as an input signal A, the input end of the second inverter U1B is connected with the other input end of the first NAND gate U2A, one input end of the fifth NAND gate U3A, and is connected with a rear switch, the output signal of the rear switch is recorded as an input signal B, the input end of the third inverter U1C is connected with a back stroke comparator circuit of the settable stroke unit, a transmission signal between the two is recorded as an input signal D, the output end of the first inverter U1A is connected with one input end of the fourth NAND gate U2D, the output end of the second inverter U1B is connected with the other input end of the fourth NAND gate U2D, the output end of the first NAND gate U2A and the output end of the fourth NAND gate U2D are respectively connected with two input ends of the ninth NAND gate U5A, one input end of the second NAND gate U2B and the other input end of the third NAND gate U2C are both connected with a front stroke comparator circuit of the settable stroke unit, the input signal of the front stroke comparator circuit is recorded as an input signal C, the output end of the third inverter U1C is connected with the other input end of the second NAND gate U2B and the other input end of the fifth NAND gate U3A, the output end of the second NAND gate U2B and the output end of the third NAND gate U2C are respectively connected with two input ends of the sixth NAND gate U4B, the output end of the ninth NAND gate U5A and the output end of the sixth NAND gate U4B are respectively connected with two input ends of the seventh NAND gate U4C, the output end of the fifth NAND gate U3A and the output end of the seventh NAND gate U4C are respectively connected with two input ends of the eighth NAND gate U4D, and the output end of the eighth NAND gate U4D and the output end of the tenth NAND gate U6A are respectively connected with a driving unit.
According to the technical scheme, the software-free seat control circuit capable of setting the stroke further comprises a power module, and the power module is respectively connected with the logic circuit, the driving unit, the driving motor and the angular displacement sensor.
According to the technical scheme, the driving unit comprises a motor driving chip, a signal converter and a motor driving circuit, wherein the input end of the motor driving chip is connected with the angular displacement sensor through the signal converter, and the output end of the motor driving chip is connected with the driving motor through the motor driving circuit.
According to the technical scheme, the model of the motor driving chip is MC33035, the motor driving circuit is a three-phase bridge circuit, and the model of the signal converter is MC33039.
The invention has the following beneficial effects:
The invention provides a software-free seat control circuit capable of setting a stroke, which can control a driving motor of a seat according to a seat operation key signal, realize automatic adjustment and movement of the seat in a pure hardware mode, improve stability and reduce uncontrollable risk; meanwhile, the travel of the seat can be set through the external serial port of the travel unit, so that the complicated mechanical calibration process of the seat can be avoided.
Drawings
FIG. 1 is a control schematic diagram of a software-less seat control circuit capable of setting a travel in an embodiment of the invention;
FIG. 2 is a schematic diagram of a drive unit in an embodiment of the invention;
fig. 3 is a schematic diagram of a logic circuit in an embodiment of the invention.
Detailed Description
The invention will now be described in detail with reference to the drawings and examples.
Referring to fig. 1 to 3, the software-free seat control circuit capable of setting a stroke in an embodiment provided by the invention comprises a driving unit, a logic circuit, a stroke-settable unit, a driving motor and an angular displacement sensor, wherein the driving motor is connected with the seat through a transmission mechanism to drive the seat to move back and forth along a track, the angular displacement sensor is arranged on an output shaft of the driving motor, the driving unit is respectively connected with the driving motor and the logic circuit, the logic circuit is respectively connected with the stroke-settable unit, the driving unit and a switch signal, and the stroke-settable unit is connected with the angular displacement sensor.
Further, the software-free seat control circuit capable of setting the stroke further comprises a stroke-setting unit, and the logic circuit is connected with the angular displacement sensor through the stroke-setting unit.
Further, the settable stroke unit comprises two stroke comparator circuits, namely a front stroke comparator circuit and a rear stroke comparator circuit, and the angular displacement sensor is connected with the logic circuit through the front stroke comparator circuit and the rear stroke comparator circuit; the angular displacement sensor transmits output signals to the input ends of the front stroke comparator circuit and the rear stroke comparator circuit, the front stroke comparator circuit and the rear stroke comparator circuit transmit signals to the logic circuit, the input signals of the front stroke comparator circuit to the logic circuit are front limit or upper limit position signals and are marked as input signals C, and the input signals of the rear stroke comparator circuit to the logic circuit are rear limit or lower limit position signals and are marked as input signals D.
Further, the stroke comparison unit can be provided with a voltage dividing circuit consisting of a comparator, an electric mechanism position sensor feedback voltage (connected to a positive or negative input end of the comparator according to the in-place control logic) and a digital potentiometer. The feedback voltage of the position sensor of the electric mechanism at the limit position of the seat can be collected, and according to the voltage value, the resistance value of the digital potentiometer is changed through the digital potentiometer bus, so that the set voltage of the comparator is changed, and the limit position of the seat is set.
Further, the front stroke comparator circuit and the rear stroke comparator circuit are both connected with digital potentiometers, and the stroke of the seat is set through an external serial port of the digital potentiometer of the settable stroke unit, so that the complicated mechanical calibration process of the seat can be avoided.
Further, the logic circuit is also connected with a front switch and a rear switch; the front switch outputs a forward moving signal or an upward moving signal to the driving unit through the logic circuit, the driving unit records as an input signal A according to the forward moving signal or the upward moving signal, the driving motor is controlled to drive the seat to move forwards or upwards along the guide rail, the rear switch outputs a backward moving signal or a downward moving signal to the driving unit through the logic circuit, and the driving unit controls the driving motor to drive the seat to move backwards or downwards along the guide rail according to the backward moving signal or the downward moving signal and records as an input signal B.
Further, the logic circuit includes a first nand gate U2A, a second nand gate U2B, a third nand gate U2C, a fourth nand gate U2D, a fifth nand gate U3A, a sixth nand gate U4B, a seventh nand gate U4C, an eighth nand gate U4D, a ninth nand gate U5A, a tenth nand gate U6A, a first inverter U1A, a second inverter U1B, and a third inverter U1C, an input terminal of the first inverter U1A is connected to one input terminal of the first nand gate U2A, two input terminals of the tenth nand gate U6A, one input terminal of the third nand gate U2C, and is connected to a front switch, an output signal of the front switch is denoted as an input signal a, an input terminal of the second inverter U1B is connected to the other input terminal of the first nand gate U2A, one input terminal of the fifth nand gate U3A, and is connected to a rear switch, an output signal of the rear switch is denoted as an input signal B, the input end of the third inverter U1C is connected with a back stroke comparator circuit of the settable stroke unit, a transmission signal between the two is recorded as an input signal D, the output end of the first inverter U1A is connected with one input end of the fourth NAND gate U2D, the output end of the second inverter U1B is connected with the other input end of the fourth NAND gate U2D, the output end of the first NAND gate U2A and the output end of the fourth NAND gate U2D are respectively connected with two input ends of the ninth NAND gate U5A, one input end of the second NAND gate U2B and the other input end of the third NAND gate U2C are both connected with a front stroke comparator circuit of the settable stroke unit, the input signal of the front stroke comparator circuit is recorded as an input signal C, the output end of the third inverter U1C is connected with the other input end of the second NAND gate U2B and the other input end of the fifth NAND gate U3A, the output end of the second NAND gate U2B and the output end of the third NAND gate U2C are respectively connected with two input ends of the sixth NAND gate U4B, the output end of the ninth NAND gate U5A and the output end of the sixth NAND gate U4B are respectively connected with two input ends of the seventh NAND gate U4C, the output end of the fifth NAND gate U3A and the output end of the seventh NAND gate U4C are respectively connected with two input ends of the eighth NAND gate U4D, and the output end of the eighth NAND gate U4D and the output end of the tenth NAND gate U6A are respectively connected with a driving unit.
Further, the output end of the eighth nand gate U4D and the output end of the tenth nand gate U6A are connected with the driving unit through an oscilloscope.
The output signal Y of the eighth nand gate U4D is a braking signal, which indicates that the driving unit needs to control the driving motor to brake, and the output signal Y1 of the tenth nand gate U6A is a direction signal, which indicates that the driving unit needs to control the driving motor to drive the seat to move forwards or backwards.
Further, the logic circuit realizes switch interlocking, limit bit stopping, direction logic control and the like, and can be designed by adopting a basic logic gate circuit. Setting the input signal A of the front switch and the input signal B (up and down) of the rear switch to be effectively set to be 1, and setting the invalid to be 0; the input signal C from the front (or upper) to the limit position is set to be 1, and the input signal from the rear (or lower) to the limit position is set to be 0, otherwise, the input signal is not in place; the brake output Y is high level 1 as brake and low level 0 as operation; the motor runs in the direction of 1 at the front and 0 at the low, with the same logic as the front (upper) control switch. According to the control logic, a front switch signal A is 1, a rear switch signal B is 0, a front-to-limit position signal is 0, and a rear-to-limit position signal is 0 or 1; the front switch signal A is 0, the rear switch signal B is 1, the front to limit position signal is 0 or the rear to limit position signal is 1, the brake signal is 0 (running), and under other conditions, the brake signal is 1 (braking). Adopts logic AND gate, OR gate and NOT gate according to logic circuitThe circuit is built, the logic truth table is shown in table 1,
Table 1 control logic truth table
The logic circuit principle is shown in fig. 3.
Further, the software-free seat control circuit capable of setting the stroke further comprises a DCDC power module, and the DCDC power module is respectively connected with the logic circuit, the driving unit, the driving motor and the angular displacement sensor.
Further, the driving unit comprises a motor driving chip, a signal converter and a motor driving circuit, wherein the input end of the motor driving chip is connected with the electric mechanism angular displacement sensor and the Hall sensor through the signal converter, the output end of the motor driving chip is connected with the driving motor through the motor driving circuit, and the Hall sensor is arranged on the driving motor and is a position sensor.
Further, the model of the motor driving chip is MC33035, the motor driving circuit is a three-phase bridge circuit, and the model of the signal converter is MC33039.
The driving unit adopts a MC33035 special brushless motor driving chip, an external three-phase bridge circuit forms a motor driving circuit, a Hall signal of an external electric mechanism is simultaneously input into the MC33039, a proportional voltage signal is input, the voltage signal is input into an inverting input end of an error amplifier of the MC33035 to form a speed closed loop control, a set speed value can be obtained according to proper parameter matching, when the seat is at a limit position, a logic unit outputs a braking signal to control the electric mechanism to stop, and a schematic diagram of the driving unit is shown in figure 2.
Further, the driving motor is connected with the seat through the transmission mechanism, the controller is connected with the driving motor, the seat moves back and forth along the track for adjustment, and the stroke of the seat is set through an external serial port of the controller, so that a complex mechanical calibration process of the seat can be avoided; the angular displacement sensor is arranged on an output shaft of the driving motor.
Further, the number of the driving motors is two, namely a horizontal driving motor and a vertical driving motor, the horizontal driving motor and the vertical driving motor are connected with the seat through a transmission mechanism, the horizontal driving motor drives the seat to move back and forth along the horizontal track, and the vertical driving motor drives the seat to move up and down along the vertical track; when the driving motor is a horizontal driving motor, the signal given by the front switch is a forward moving signal, the signal given by the rear switch is a backward moving signal, the input signal transmitted to the logic circuit by the front stroke comparator circuit is a front limit position signal, the input signal transmitted to the logic circuit by the rear stroke comparator circuit is a rear limit position signal, when the driving motor is a vertical driving motor, the signal given by the front switch is an upward moving signal, the signal given by the rear switch is a downward moving signal, the input signal transmitted to the logic circuit by the front stroke comparator circuit is an upper limit position signal, and the input signal transmitted to the logic circuit by the rear stroke comparator circuit is a lower limit position signal.
The working principle of the invention is as follows: when the motor is normally driven, corresponding high-low level signals are input when the switch acts, the logic unit logically outputs corresponding direction level and braking level according to the corresponding levels of the switch signal and the in-place signal, the driving unit is supplied with the corresponding driving signals which are output by the MC33035 according to the direction signal, the braking signal and the Hall signal of the motor, the three-phase bridge drives the brushless motor to operate, the MC33039 outputs proportional voltage according to the Hall signal and inputs the proportional voltage to the inverting input end of the error amplifier of the MC33035 to form speed closed loop control, and when the seat is at the limit position, the logic unit outputs the braking signal to control the motor mechanism to stop.
When the limit position is set, the seat is moved in the full travel range, the feedback voltage of the position sensor of the electric mechanism is recorded, and the digital potentiometer resistor is set according to the voltage through the serial port so as to set the comparison voltage of the comparator end, so that the limit position setting of the seat is achieved.
The foregoing is merely illustrative of the present invention and is not intended to limit the scope of the invention, which is defined by the claims and their equivalents.
Claims (3)
1. The software-free seat control circuit capable of setting the stroke is characterized by comprising a driving unit, a logic circuit, a stroke-settable unit, a driving motor and an angular displacement sensor, wherein the driving motor is connected with a seat to drive the seat to move back and forth;
The logic circuit is also connected with a front switch and a rear switch; the front switch outputs a forward moving signal or an upward moving signal to the driving unit through the logic circuit and is marked as an input signal A, the driving unit controls the driving motor to drive the seat to move forwards or upwards along the guide rail according to the forward moving signal or the upward moving signal, the rear switch outputs a backward moving signal or a downward moving signal to the driving unit through the logic circuit and is marked as an input signal B, and the driving unit controls the driving motor to drive the seat to move backwards or downwards along the guide rail according to the backward moving signal or the downward moving signal;
The logic circuit comprises a first NAND gate (U2A), a second NAND gate (U2B), a third NAND gate (U2C), a fourth NAND gate (U2D), a fifth NAND gate (U3A), a sixth NAND gate (U4B), a seventh NAND gate (U4C), an eighth NAND gate (U4D), a ninth NAND gate (U5A), a tenth NAND gate (U6A), a first inverter (U1A), a second inverter (U1B) and a third inverter (U1C), wherein the input end of the first inverter (U1A) is connected with one input end of the first NAND gate (U2A), two input ends of the tenth NAND gate (U6A), one input end of the third NAND gate (U2C) is connected with a front switch, the input end of the second inverter (U1B) is connected with the other input end of the first NAND gate (U2A), one input end of the fifth NAND gate (U6A) is connected with one input end of the fifth NAND gate (U1A), the input end of the second inverter (U1A) is connected with the output end of the fourth NAND gate (U2A), the input end of the fourth NAND gate (U2A) is connected with the output end of the fourth NAND gate (U2A) is arranged, the input end of the fourth NAND gate (U1B) is connected with the output end of the fourth NAND gate (U2A) respectively, one input end of the second NAND gate (U2B) and the other input end of the third NAND gate (U2C) are connected with the other port of the stroke unit, the output end of the third inverter (U1C) is connected with the other input end of the second NAND gate (U2B) and the other input end of the fifth NAND gate (U3A), the output end of the second NAND gate (U2B) and the output end of the third NAND gate (U2C) are respectively connected with the two input ends of the sixth NAND gate (U4B), the output end of the ninth NAND gate (U5A) and the output end of the sixth NAND gate (U4B) are respectively connected with the two input ends of the seventh NAND gate (U4C), and the output end of the fifth NAND gate (U3A) and the output end of the seventh NAND gate (U4C) are respectively connected with the two input ends of the eighth NAND gate (U4D), and the output end of the eighth NAND gate (U4D) and the output end of the tenth NAND gate (U6A) are respectively connected with the driving unit;
The output signal Y of the eighth NAND gate (U4D) is a braking signal, which indicates that the driving unit needs to control the driving motor to brake, and the output signal Y1 of the tenth NAND gate (U6A) is a direction signal, which indicates that the driving unit needs to control the driving motor to drive the seat to move forwards or backwards;
The settable stroke unit comprises two stroke comparator circuits, namely a front stroke comparator circuit and a rear stroke comparator circuit, and the angular displacement sensor is connected with the logic circuit through the front stroke comparator circuit and the rear stroke comparator circuit; the angular displacement sensor transmits output signals to the input ends of the front stroke comparator circuit and the rear stroke comparator circuit, the front stroke comparator circuit and the rear stroke comparator circuit transmit signals to the logic circuit, the input signals of the front stroke comparator circuit to the logic circuit are front limit or upper limit position signals and are marked as input signals C, and the input signals of the rear stroke comparator circuit to the logic circuit are rear limit or lower limit position signals and are marked as input signals D;
Setting the action of an input signal A for controlling the front switch and an input signal B for controlling the rear switch to be effectively set to be 1, and setting the action of the input signal A for controlling the front switch and the input signal B for controlling the rear switch to be ineffective set to be 0; the input signal C from the front or up to the limit position is set to be 1, and the input signal C from the rear or down to the limit position is set to be 0; the brake output Y is high level 1 as brake and low level 0 as operation; the running direction of the motor is 1, and the low value is 0 which is the same as the logic of the front or upper control switch; according to the control logic, the front switch signal A is 1, the rear switch signal B is 0, and the front-to-limit position signal is 0 and then the front-to-limit position signal is 0 or 1; the front switch signal A is 0, the rear switch signal B is 1, the front-to-limit position signal is 0 or 1 and the rear-to-limit position signal is 1, the brake signal is 0, and under other conditions, the brake signal is 1;
the logical AND gate, the OR gate and the NOT gate are adopted according to the logical circuit Y= +AB++AC+Constructing a circuit;
The software-free seat control circuit capable of setting the stroke also comprises a power supply module which is respectively connected with the logic circuit, the driving unit, the driving motor and the angular displacement sensor;
the driving unit comprises a motor driving chip, a signal converter and a motor driving circuit, wherein the input end of the motor driving chip is connected with the angular displacement sensor through the signal converter, and the output end of the motor driving chip is connected with the driving motor through the motor driving circuit;
When the motor is normally driven, when the switch acts, corresponding high-low level signals are input, the logic unit logically outputs corresponding direction level and braking level according to the corresponding levels of the switch signals and the in-place signals, the corresponding driving signals are output to the driving unit according to the direction signals, the braking signals and Hall signals of the motor to drive the brushless motor to operate, proportional voltage is output according to the Hall signals and is input to the inverting input end of the error amplifier to form speed closed loop control, and when the seat is at the limit position, the logic unit outputs the braking signals to control the motor mechanism to stop;
When the limit position is set, the seat is moved in the full travel range, the feedback voltage of the position sensor of the electric mechanism is recorded, and the digital potentiometer resistor is set according to the voltage through the serial port so as to set the comparison voltage of the comparator end, so that the limit position setting of the seat is achieved.
2. The runlength settable, software less seat control circuit of claim 1 wherein the front and rear range comparator circuits are each connected to a digital potentiometer.
3. The runlength configurable software-less seat control circuit of claim 1, wherein the motor drive chip is of the type MC33035, the motor drive circuit is of the type of a three-phase bridge circuit, and the signal converter is of the type MC33039.
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| CN101678781A (en) * | 2007-11-22 | 2010-03-24 | 爱信精机株式会社 | Position detection device for vehicle and seat position detection device |
| CN211798549U (en) * | 2019-12-30 | 2020-10-30 | 青岛英派斯健康科技股份有限公司 | Rehabilitation exercise bicycle seat rotation regulation system |
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