CN117878839A - Automobile glass lifting switch circuit with locked rotor protection and control method thereof - Google Patents
Automobile glass lifting switch circuit with locked rotor protection and control method thereof Download PDFInfo
- Publication number
- CN117878839A CN117878839A CN202311863081.3A CN202311863081A CN117878839A CN 117878839 A CN117878839 A CN 117878839A CN 202311863081 A CN202311863081 A CN 202311863081A CN 117878839 A CN117878839 A CN 117878839A
- Authority
- CN
- China
- Prior art keywords
- pin
- locked rotor
- electrically connected
- diode
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011521 glass Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 claims description 36
- 238000005070 sampling Methods 0.000 claims description 31
- 230000002159 abnormal effect Effects 0.000 claims description 14
- 230000001960 triggered effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003990 capacitor Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
Landscapes
- Control Of Direct Current Motors (AREA)
Abstract
The application relates to the field of automobile electronics, in particular to an automobile glass lifting switch circuit with locked rotor protection and a control method thereof, wherein the automobile glass lifting switch circuit comprises a switch module, a control module and a control module, wherein the switch module is used for controlling the on-off of the circuit by a user and outputting corresponding switch signals; the control module receives the switch signal and controls the forward rotation or the reverse rotation of the motor according to the switch signal; and the locked rotor protection module is used for detecting whether the motor is locked rotor or not and outputting a corresponding locked rotor signal to the switch module so as to realize on-off control. The method has the effect of reducing cost.
Description
Technical Field
The application relates to the field of automobile electronics, in particular to an automobile glass lifting switch circuit with locked rotor protection and a control method thereof.
Background
In the existing vehicles, it is very common to carry an automobile glass lifting switch circuit, and the automobile glass can control the automobile glass to automatically lift by pressing a key through the automobile glass lifting switch circuit, so that the lifting of the automobile glass is not required to be controlled by a hand rocker as before. The current automobile glass lifting switch circuit mainly comprises a motor, a singlechip, a power chip, a relay, a key, a plurality of resistors, capacitors, diodes, triodes and the like, when a user presses the key, the relay is driven by the triodes, the motor is connected through the relay to rotate so as to control the automobile glass to lift or descend, when the automobile glass lifts to the condition that the automobile glass cannot continue to move, the motor is blocked, current can rise, the current is acquired through a pin of the singlechip, and after calculation and judgment, the singlechip is used for controlling the triodes to break, so that blocking protection is realized, and the stability of the input power of the singlechip is realized through the power chip.
However, the circuit of the common automobile glass lifting switch circuit is complex, and components such as a singlechip, a power chip and the like are expensive, so that the number of components is large, and the cost is high.
Disclosure of Invention
In order to solve the problem of high cost of an automobile glass lifting switch circuit, the application provides an automobile glass lifting switch circuit with locked rotor protection and a control method thereof.
The application provides a take lock rotor protection's car glass lifting switch circuit adopts following technical scheme:
an automotive glass-frame riser switch circuit with locked rotor protection, comprising:
the switch module is used for controlling the on-off of the circuit by a user and outputting corresponding switch signals;
the control module receives the switch signal and controls the forward rotation or the reverse rotation of the motor according to the switch signal;
and the locked rotor protection module is used for detecting whether the motor is locked rotor or not and outputting a corresponding locked rotor signal to the switch module so as to realize on-off control.
Through adopting above-mentioned technical scheme, detect user's operation through switch module to output corresponding switching signal gives control module, thereby control the corotation of motor, reversal, when rethread locked rotor protection module goes up and down to the assigned position with automobile glass, the motor takes place to lock the commentaries on classics and protects.
Optionally, the switch module includes a power supply terminal V bat Button SW1, network terminal V FB A triode Q1, a diode D1 and a diode D2, wherein a third pin of the key SW1 is electrically connected with the power supply end V bat The third pin of the key SW1 is electrically connected to the first pin, the second pin, the fourth pin and the fifth pin along with the pressing of the user, the second pin and the fifth pin of the key SW1 are connected in parallel to the positive electrode of the diode D1, the first pin and the fourth pin of the key SW1 are connected in parallel to the positive electrode of the diode D2, and the diode D1 and the negative electrode of the diode D2 are connected in parallel to the network terminal V FB The diode D1 and the diode D2 are used for anti-reflection, and the network terminal V FB The output end of the locked rotor protection module is connected to the base electrode of the triode Q1 in parallel, and the collector electrode of the triode Q1 is electrically connected to the control module to control the control module.
Through adopting above-mentioned technical scheme, stir button SW1 through the user to produce different current direction, thereby output different switching signals, inject the current direction through diode D1 and diode D2, protection current, and reduce the current direction and dash mutually and lead to unable normal work, improve stability.
Optionally, the control module includes a relay RY1 and a motor M, where the relay RY1 includes at least two incoming line ends and at least two outgoing line ends corresponding to the incoming line ends, the fourth pin and the fifth pin of the key SW1 are respectively electrically connected to different incoming line ends of the relay RY1, the motor M is electrically connected to different outgoing line ends of the relay RY1, and the two outgoing line ends of the relay RY1 are connected in parallel and used as an output end L of the control module and electrically connected to the locked rotor protection module.
By adopting the technical scheme, the motor M is switched in different current directions by receiving different current directions, so that the forward rotation and the reverse rotation of the motor M are controlled, and the motor M is simple and reliable in structure.
Optionally, the control module further includes a diode D3 and a diode D5, where an anode of the diode D3 is electrically connected to the fifth pin of the key SW1, an anode of the diode D5 is electrically connected to the fourth pin of the key SW1, and a cathode of the diode D3 and a cathode of the diode D5 are connected in parallel to the collector of the triode Q1.
Through adopting above-mentioned technical scheme, play the freewheel effect through diode D3 and diode D5, reduce the current and suddenly disappear and cause the probability of damage to components and parts, play the guard action.
Optionally, the locked rotor protection module includes an operational amplifier U1A, a comparator U1B, and a network V FB The resistor R4 is electrically connected to the output end of the control module to be used as current sampling, the non-inverting input end and the inverting input end of the operational amplifier U1A are electrically connected to the two ends of the resistor R4, the output end of the operational amplifier U1A is electrically connected with the inverting input end to form a feedback network, the output end of the operational amplifier U1A is electrically connected to the inverting input end of the comparator U1B, the non-inverting input end of the comparator U1B is electrically connected to the power supply end, and the output end of the comparator U1B is electrically connected to the base of the triode Q1.
Through adopting above-mentioned technical scheme, carry out the sampling of motor M's electric current through resistance R4, the electric current or the voltage that will sample is amplified through operational amplifier U1A, then the electric current or the voltage that will amplify is compared with reference current or voltage through comparator U1B, output through comparator U1B is controlled triode Q1, thereby play the control to relay RY1, make automobile glass lifting switch circuit accessible hardware implementation, do not need the singlechip programming to control, make the car rule chip shortage, the cost is too high, the problem that software exists BUG is effectively solved.
Optionally, the locked rotor protection module includes a triode Q4, an output end of the comparator U1B is electrically connected to a base electrode of the triode Q4, and the network end V FB The transistor is electrically connected to the emitter of the transistor Q4, the collector of the transistor Q4 is electrically connected to the feedback network of the operational amplifier U1A, and the base and emitter of the transistor Q4 are electrically connected.
Through adopting above-mentioned technical scheme, keep triode Q1's circuit breaking off state through triode Q4, improve circuit stability, reduce the circuit and switch in switching on and two kinds of states of circuit breaking repeatedly, lead to the probability of components and parts damage.
Optionally, the method comprises the following steps:
the detection module is used for detecting the inverting input end and the output end of the comparator U1B, detecting the output end of the control module, obtaining corresponding detection signals, calculating, obtaining alarm signals and outputting the alarm signals to a user.
Through adopting above-mentioned technical scheme, detect through detection module for the user can in time discover trouble components and parts, improves the security.
The control method provided by the application adopts the following technical scheme:
a control method, comprising:
receiving a switching signal;
determining motor steering through the switch signal;
sampling the current of the motor to obtain a sampling signal;
and determining a locked rotor signal through the sampling signal and a preset threshold signal, and determining whether to stop the motor through the locked rotor signal.
Through adopting above-mentioned technical scheme, need not the use of chip, can realize the locked-rotor protection of motor, reduce cost.
Optionally, the method comprises the following steps:
detecting an inverting input end and an output end of the comparator U1B, and detecting an output end of the control module to obtain the detection signal, wherein the detection signal comprises a detection input voltage, a detection output voltage and a sampling current;
and comparing the detected input voltage with a preset reverse input threshold value to judge whether the theoretical output end of the comparator U1B should be triggered, comparing the detected output voltage with a preset output trigger threshold value to judge whether the output end of the comparator U1B is triggered, and outputting a corresponding alarm signal to a user.
By adopting the technical scheme, the user can discover the fault components in time through detection, so that the safety is improved.
Optionally, the method further comprises:
if the sampling current exceeds a preset locked rotor threshold and the detection input voltage exceeds the reverse phase input threshold, the detection output voltage does not reach the output trigger threshold, and an alarm signal representing that the comparator U1B is abnormal is output to a user; if the sampling current exceeds the locked rotor threshold and the detection input voltage does not reach the reverse phase input threshold, the detection output voltage does not reach the output trigger threshold, and an alarm signal representing that the operational amplifier U1A is abnormal is output to a user;
presetting a fluctuation threshold, determining fluctuation time data through the sampling current and the fluctuation threshold, and outputting an alarm signal representing that the switching module is used for preventing the abnormality of the anti-reflection component to a user if the fluctuation time data is larger than a preset fault time threshold;
and determining fluctuation times through the fluctuation time data, the fault time threshold and a preset time interval threshold, and outputting an alarm signal representing that the component used for controlling the motor to rotate forward or reversely is abnormal to a user if the fluctuation times are larger than the preset fluctuation threshold.
By adopting the technical scheme, which component is damaged and output to the user can be judged more accurately, the accuracy is improved, and the user is further facilitated to maintain.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the automobile glass lifting switch circuit can be realized through hardware, and is not controlled by programming of a singlechip, so that the problems of shortage of automobile gauge chips, overhigh cost and BUG existing in software are effectively solved.
2. The structure is simple and reliable through hardware implementation.
Drawings
Fig. 1 is a schematic block diagram of an automotive window regulator switch circuit with locked rotor protection according to embodiment 1 of the present application.
Fig. 2 is a circuit schematic diagram of the switch module and the control module.
Fig. 3 is a circuit schematic diagram of the locked rotor protection module.
Fig. 4 is a schematic flow chart of a control amplification in embodiment 1 of the present application.
Fig. 5 is a schematic block diagram of a vehicle window regulator switch circuit with locked rotor protection according to embodiment 2 of the present application.
Fig. 6 is a schematic flow chart of a control amplification in embodiment 2 of the present application.
Reference numerals illustrate: 1. a switch module; 11. a control module; 12. a locked rotor protection module; 13. and a detection module.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-6.
Embodiment 1 of the application discloses an automobile glass lifting switch circuit with locked rotor protection. Referring to fig. 1, the automobile glass lifting switch circuit with locked rotor protection comprises a switch module 1, a control module 11 and a locked rotor protection module 12, wherein the switch module 1 is used for interacting with a user and forming a switch signal, the output end of the switch module 1 outputs the switch signal to the input end of the control module 11, the control module 11 controls a motor to perform corresponding forward rotation or reverse rotation, current of the motor is output to the locked rotor protection module 12 as the output end, and the locked rotor protection module 12 is used for sampling the current to judge whether the motor is locked rotor or not and outputting a corresponding locked rotor signal to the switch module 1 to realize on-off control of the motor.
Referring to fig. 2 and 3, the switch module 1 includes a power supply terminal V bat Button SW1, network terminal V FB The transistor Q1, the diode D2, the diode D4, the capacitor C1, the capacitor CE1, the resistor R7, the resistor R8, and the resistor R9, in this embodiment, the capacitor CE1 may be an electrolytic capacitor for filtering and storing energy, and the capacitor C1 is used for filtering; the third pin of the key SW1 is an input end, the first pin, the second pin, the fourth pin and the fifth pin of the key SW1 are output ends, and the third pin of the key SW1 can be electrically connected to any one of the first pin, the second pin, the fourth pin and the fifth pin along with the toggle of a user; the resistor R7 is a pull-up resistor, the resistor R8 is a current limiting resistor, and the resistor R9 is a pull-down resistor; the diode D1, the diode D2 and the diode D4 are used for current anti-reflection, and the triode Q1 can adopt NPN type. Supply terminal V bat The positive electrode of the diode D4 is electrically connected, the negative electrode of the diode D4 is electrically connected to the third pin of the key SW1, and a +12V power supply end is connected in parallel between the negative electrode of the diode D4 and the third pin of the key SW 1. The positive pole of the capacitor CE1 and one end of the capacitor C1 are connected in parallel between the negative pole of the pole tube D4 and the third pin of the key SW1, and the negative pole of the capacitor CE1 and the other end of the capacitor C1 are connected in parallel to the ground. The first pin of the key SW1 is connected in parallel with the fourth pin, and the second pin of the key SW1 is connected in parallel with the fifth pin. The positive electrode of the diode D1 is connected in parallel with the fifth pin of the key SW1, the positive electrode of the diode D2 is connected in parallel with the fourth pin of the key SW1, and the negative electrode of the diode D1 and the negative electrode of the diode D2 are connected in parallel with the network terminal V FB And (3) upper part. One end of a resistor R8 is electrically connected to the base electrode of the triode Q1, one end of the resistor R7 is connected in parallel to the other end of the resistor R8, and a network end V FB The resistor R9 is connected in parallel between the base and the emitter of the triode Q1, and the emitter of the triode Q1 is grounded.
Referring to fig. 2 and 3, the control module 11 includes a diode D3, a diode D5, a relay RY1, a motor M, and a power supply terminal V bat In the embodiment, the relay RY1 includes two wire inlet ends and two wire outlet ends, wherein the two wire inlet ends are a first wire inlet end having a fourth pin and a fifth pin, and a second wire inlet end having a ninth pin and a tenth pin, respectively. The two wire outlet ends are respectively provided with a first pin, a second pin and a third pinThe first lead-out end of the first lead-out end corresponds to the first lead-in end, the second lead-out end corresponds to the second lead-in end, the first lead-out end of the first lead-out end can be shifted to be electrically connected with any one of the second lead-out end or the third lead-out end for conduction along with the conduction of the first lead-out end, and the sixth lead-out end of the second lead-out end can be shifted to be electrically connected with any one of the seventh lead-out end or the eighth lead-out end for conduction along with the conduction of the second lead-out end; the diode D3 and the diode D5 are used for freewheeling. The fifth pin of the key SW1 is electrically connected to the fifth pin of the relay RY1, and the fourth pin of the key SW1 is electrically connected to the ninth pin of the relay RY 1. The negative pole of the diode D3 is connected in parallel between the fifth pin of the key SW1 and the fifth pin of the relay RY1, the negative pole of the diode D5 is connected in parallel between the fourth pin of the key SW1 and the ninth pin of the relay RY1, the positive pole of the diode D3 is connected in parallel on the fourth pin of the relay RY1, the positive pole of the diode D5 is connected in parallel on the tenth pin of the relay RY1, and the positive pole of the diode D3 and the positive pole of the diode D5 are connected in parallel on the collector of the triode Q1. The motor M is connected in series between the first pin and the sixth pin of the relay RY1, the second pin and the seventh pin of the relay RY1 are connected in parallel to be used as an output end L for output, and the third pin and the eighth pin of the relay RY1 are connected in parallel to a power supply end V bat And (3) upper part.
Referring to fig. 2 and 3, the locked-rotor protection module 12 includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R10, a resistor R11, an op-amp chip U1, +12v power supply terminal, a triode Q4, a diode D6, +12v power supply terminal, in this embodiment, the op-amp chip U1 includes an op-amp U1A and a comparator U1B, and the op-amp chip U1 may be of LM2904DR type. One end of the resistor R4 is electrically connected to the output end L, the other end of the resistor R4 is grounded, and the resistor R4 is used for sampling current of the motor M. The non-inverting input end of the operational amplifier U1A is connected in parallel between the resistor R4 and the output end L, one end of the resistor R2 is electrically connected to the inverting input end of the operational amplifier U1A, and the other end of the resistor R2 is connected in parallel between the resistor R4 and the ground end GND. The output end of the operational amplifier U1A is electrically connected to the inverting input end of the comparator U1B, and the resistor R3 is connected in series with the output end of the operational amplifier U1AResistor R3 is used for current limiting between the inverting input of comparator U1B. One end of the resistor R5 is electrically connected to the +12V power supply end, one end of the resistor R6 is electrically connected to the other end of the resistor R5, the other end of the resistor R6 is grounded, the non-inverting input end of the comparator U1B is connected in parallel between the resistor R5 and the resistor R6, the resistor R5 and the resistor R6 form a voltage dividing circuit, and a reference voltage is provided for the comparator U1B or the operational amplifier chip U1. One end of a resistor R1 is connected in parallel between a resistor R2 and an inverting input end of the operational amplifier U1A, the other end of the resistor R1 is connected in parallel between an output end of the operational amplifier U1A and a resistor R3, and the resistor R1 and the resistor R2 form an operational amplifier feedback network. The output of the comparator U1B is electrically connected between the resistor R7 and the resistor R8 as a delayctrl terminal to control the transistor Q1. The output end of the comparator U1B is electrically connected to the base electrode of the triode Q4, the resistor R11 is connected in series between the output end of the comparator U1B and the base electrode of the triode Q4, and the emitter electrode of the triode Q4 is electrically connected to the network end V FB The resistor R10 is connected in parallel between the emitter and the base of the triode Q4, the collector of the triode Q4 is electrically connected to the positive electrode of the diode D6, the negative electrode of the diode D6 is connected in parallel between the output end of the operational amplifier U1A and the resistor R3, and the diode D6 is used for preventing reverse.
The implementation principle of the automobile glass lifting switch circuit with locked rotor protection in embodiment 1 of the application is as follows: when the third pin and the fifth pin of the toggle button SW1 are electrically connected and conducted, the power supply terminal V bat The input power is passed through diode D4 and diode D1 to network terminal V FB Network side V FB The switching on makes triode Q1 switch on, make the first pin of the relay RY1 stir to connect with the third pin electrically and switch on, the sixth pin of the relay RY1 stir to connect with the seventh pin electrically, the electrical machinery rotates forward, the electric current of the electrical machinery samples and gives operational amplifier U1A through the resistance R4, output to the inverting input end of the comparator U1B after amplifying through the operational amplifier U1A, through when the amplified electric current is greater than +12V power supply end and is on the voltage division value on resistance R5 and resistance R6, the output low level of the relay Ctrl end, triode Q1 is closed, and keep the closed state through triode Q4, realize the locked-rotor protection;
when the user toggles the third pin and the third pin of the button SW1When the fourth pin is electrically connected and conducted, the power supply end V bat The input power is passed through diode D4 and diode D1 to network terminal V FB Network side V FB The conduction enables the triode Q1 to be conducted, the first pin of the relay RY1 is shifted to be electrically connected and conducted with the second pin, the sixth pin of the relay RY1 is shifted to be electrically connected and conducted with the eighth pin, and the motor is reversed.
Embodiment 1 of the present application discloses a control method. Referring to fig. 1, the control method includes:
s1, receiving a switch signal;
s11, determining motor steering through a switch signal;
s12, sampling the current of the motor to obtain a sampling signal;
s13, determining a locked rotor signal through the sampling signal and a preset threshold signal, and determining whether to stop the motor through the locked rotor signal.
Examples: the user toggles the third pin of the button SW1 to be electrically connected with the fourth pin or the fifth pin, so that different pins of the relay RY1 are turned on to obtain different switching signals, and at the moment, different turning directions of the motor work are caused, namely forward rotation or reverse rotation, and the voltage of the non-inverting input end of the comparator U1B is the reference voltage, namely the threshold signal in the step S13.
Example 2:
the embodiment 2 of the application discloses a car glass-frame riser switch circuit of area lock-rotor protection, and unlike embodiment 1, referring to fig. 5, car glass-frame riser switch circuit of area lock-rotor protection includes detection module 13, in this embodiment, detection module 13 adopts the chip that has the voltage detection function, owing to does not possess the control function, compares in original singlechip, and the price is still low. The detection module 13 is configured to detect an inverting input end and an output end of the comparator U1B, and further configured to detect an output end of the control module 11, obtain a corresponding detection signal, calculate the detection signal, and obtain an alarm signal to output to a user.
Embodiment 2 of the present application discloses a control method. Referring to fig. 6, the control method includes:
s2, detecting an inverting input end and an output end of the comparator U1B, detecting an output end of the control module 11 to obtain a detection signal, wherein the detection signal comprises a detection input voltage, a detection output voltage and a sampling current;
s21, determining whether the output end of the theoretical comparator U1B should be triggered by comparing the detected input voltage with a preset reverse input threshold value, determining whether the output end of the comparator U1B is triggered by comparing the detected output voltage with a preset output trigger threshold value, and outputting a corresponding alarm signal to a user;
s22, if the sampling current exceeds a preset locked rotor threshold, detecting that the input voltage exceeds an inverted input threshold, detecting that the output voltage does not reach an output trigger threshold, and outputting an alarm signal representing that the comparator U1B is abnormal to a user; if the sampling current exceeds the locked rotor threshold, detecting that the input voltage does not reach the reverse phase input threshold, detecting that the output voltage does not reach the output trigger threshold, and outputting an alarm signal representing that the operational amplifier U1A is abnormal to a user;
s23, presetting a fluctuation threshold, determining fluctuation time data through sampling current and the fluctuation threshold, and outputting an alarm signal representing that the switching module 1 is used for preventing the abnormal components to a user if the fluctuation time data is larger than the preset fault time threshold;
s24, determining fluctuation times through the fluctuation time data, the fault time threshold and the preset time interval threshold, and outputting an alarm signal representing that the component used for controlling the motor to rotate forward or reversely by the control module 11 is abnormal to a user if the fluctuation times are larger than the preset fluctuation threshold.
Examples: the voltage of the inverting input end of the comparator U1B is a detection input voltage, the voltage of the output end of the comparator U1B is a detection output voltage, and the sampling current is the current sampled by the resistor R4; if the detected output voltage is 6.5V and the detected output voltage is more than 0V, the sampling current 12A is more than 10A, the motor is normally locked, the operational amplifier U1A normally works to amplify the voltage, but the comparator U1B does not normally work to cause non-triggering, and an alarm signal indicating that the comparator U1B is abnormal is output to a user; if the sampling current is 12A and the detected input voltage is 2V <6A, the motor is locked normally, but the operational amplifier U1A does not work normally to amplify the voltage, and an alarm signal indicating that the operational amplifier U1A is abnormal is output to a user;
setting the fluctuation threshold as 2A and the fault time threshold as 2s, if the user has correctly pressed the key SW1, the sampling current is 0A<2A for 10s to obtain fluctuation time data of 10s>2s, which indicates that the motor M is not operating normally or operating normally but is continuously in an idle state, the motor M may fail in reverse due to the diode D1 or the diode D2, resulting in incorrect electrical connection between the first and second terminals of the relay RY1, e.g. when the first and second pins are electrically connected, the sixth and seventh pins are electrically connected, resulting in the power supply terminal V bat Not conducted with the motor M, and outputting a corresponding alarm signal to a user at the moment;
if the sampling current fluctuates from 0A to 4A and then from 4A to 0A for 5 times within 2s, the fluctuation frequency is 5>3, which indicates that the motor M is switched multiple times during forward rotation and reverse rotation, i.e., the first outlet terminal and the second outlet terminal of the relay RY1 are frequently switched, and an alarm signal indicating that the relay RY1 is abnormal is output to a user.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. An automobile glass lifting switch circuit with locked rotor protection, which is characterized by comprising:
the switch module (1) is used for controlling the on-off of the circuit by a user and outputting corresponding switch signals;
the control module (11) receives the switching signal and controls the forward rotation or the reverse rotation of the motor according to the switching signal;
and the locked rotor protection module (12) is used for detecting whether the motor is locked rotor or not and outputting corresponding locked rotor signals to the switch module (1) so as to realize on-off control.
2. The automotive glass lifting switch circuit with locked rotor protection of claim 1, wherein: the switch module (1) comprises a power supply terminal V bat Button SW1, network terminal V FB A triode Q1, a diode D1 and a diode D2, wherein a third pin of the key SW1 is electrically connected with the power supply end V bat The third pin of the key SW1 is electrically connected to the first pin, the second pin, the fourth pin and the fifth pin along with the pressing of the user, the second pin and the fifth pin of the key SW1 are connected in parallel to the positive electrode of the diode D1, the first pin and the fourth pin of the key SW1 are connected in parallel to the positive electrode of the diode D2, and the diode D1 and the negative electrode of the diode D2 are connected in parallel to the network terminal V FB The diode D1 and the diode D2 are used for anti-reflection, and the network terminal V FB The output end of the locked rotor protection module (12) is connected in parallel with the base electrode of the triode Q1, and the collector electrode of the triode Q1 is electrically connected to the control module (11) to control the control module (11).
3. The automotive glass lifting switch circuit with locked rotor protection according to claim 2, wherein: the control module (11) comprises a relay RY1 and a motor M, wherein the relay RY1 comprises at least two incoming line ends and at least two outgoing line ends corresponding to the incoming line ends, a fourth pin and a fifth pin of the key SW1 are respectively and electrically connected to different incoming line ends of the relay RY1, the motor M is electrically connected to different outgoing line ends of the relay RY1, and the two outgoing line ends of the relay RY1 are connected in parallel to serve as an output end L of the control module (11) and are electrically connected with the locked rotor protection module (12).
4. A vehicle glass lifting switch circuit with locked rotor protection according to claim 3, wherein: the control module (11) further comprises a diode D3 and a diode D5, wherein the positive electrode of the diode D3 is electrically connected to the fifth pin of the key SW1, the positive electrode of the diode D5 is electrically connected to the fourth pin of the key SW1, and the negative electrode of the diode D3 and the negative electrode of the diode D5 are connected in parallel to the collector electrode of the triode Q1.
5. The automotive glass lifting switch circuit with locked rotor protection of claim 1, wherein: the locked rotor protection module (12) comprises an operational amplifier U1A, a comparator U1B and a network terminal V FB The resistor R4 is electrically connected to the output end of the control module (11) to be used as current sampling, the non-inverting input end and the inverting input end of the operational amplifier U1A are electrically connected to the two ends of the resistor R4, the output end and the inverting input end of the operational amplifier U1A are electrically connected to form a feedback network, the output end of the operational amplifier U1A is electrically connected to the inverting input end of the comparator U1B, the non-inverting input end and the power supply end of the comparator U1B are electrically connected, and the output end of the comparator U1B is electrically connected to the base of the triode Q1.
6. The automotive glass lifting switch circuit with locked rotor protection of claim 5, wherein the following: the locked rotor protection module (12) comprises a triode Q4, the output end of the comparator U1B is electrically connected to the base electrode of the triode Q4, and the network end V FB The transistor is electrically connected to the emitter of the transistor Q4, the collector of the transistor Q4 is electrically connected to the feedback network of the operational amplifier U1A, and the base and emitter of the transistor Q4 are electrically connected.
7. The vehicle glass lifting switch circuit with locked rotor protection of claim 5, comprising: the detection module (13) is used for detecting the inverting input end and the output end of the comparator U1B, detecting the output end of the control module (11), obtaining corresponding detection signals, calculating, obtaining alarm signals and outputting the alarm signals to a user.
8. A control method using the automotive glass lifting switch circuit with locked rotor protection according to any one of claims 1 to 6, characterized by comprising:
receiving a switching signal;
determining motor steering through the switch signal;
sampling the current of the motor to obtain a sampling signal;
and determining a locked rotor signal through the sampling signal and a preset threshold signal, and determining whether to stop the motor through the locked rotor signal.
9. A control method according to claim 7, comprising:
detecting an inverting input end and an output end of the comparator U1B, and detecting an output end of the control module (11) to obtain the detection signal, wherein the detection signal comprises a detection input voltage, a detection output voltage and a sampling current;
and comparing the detected input voltage with a preset reverse input threshold value to judge whether the theoretical output end of the comparator U1B should be triggered, comparing the detected output voltage with a preset output trigger threshold value to judge whether the output end of the comparator U1B is triggered, and outputting a corresponding alarm signal to a user.
10. The control method according to claim 9, characterized by further comprising, after obtaining the detection signal:
if the sampling current exceeds a preset locked rotor threshold and the detection input voltage exceeds the reverse phase input threshold, the detection output voltage does not reach the output trigger threshold, and an alarm signal representing that the comparator U1B is abnormal is output to a user; if the sampling current exceeds the locked rotor threshold and the detection input voltage does not reach the reverse phase input threshold, the detection output voltage does not reach the output trigger threshold, and an alarm signal representing that the operational amplifier U1A is abnormal is output to a user;
presetting a fluctuation threshold, determining fluctuation time data through the sampling current and the fluctuation threshold, and outputting an alarm signal representing that the switching module (1) is used for preventing the abnormal components to a user if the fluctuation time data is larger than the preset fault time threshold;
and determining fluctuation times through the fluctuation time data, the fault time threshold and a preset time interval threshold, and outputting an alarm signal representing that the component used for controlling the motor to rotate forward or reversely is abnormal to a user if the fluctuation times are larger than the preset fluctuation threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311863081.3A CN117878839A (en) | 2023-12-29 | 2023-12-29 | Automobile glass lifting switch circuit with locked rotor protection and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311863081.3A CN117878839A (en) | 2023-12-29 | 2023-12-29 | Automobile glass lifting switch circuit with locked rotor protection and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117878839A true CN117878839A (en) | 2024-04-12 |
Family
ID=90589484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311863081.3A Pending CN117878839A (en) | 2023-12-29 | 2023-12-29 | Automobile glass lifting switch circuit with locked rotor protection and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117878839A (en) |
-
2023
- 2023-12-29 CN CN202311863081.3A patent/CN117878839A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113777521B (en) | High-voltage interlocking circuit and detection method thereof | |
| JP4838883B2 (en) | Circuit arrangement for detecting an undervoltage of an energy source | |
| CN110034669B (en) | Low-voltage direct-current bus bridge arm short-circuit fault protection circuit | |
| CN117878839A (en) | Automobile glass lifting switch circuit with locked rotor protection and control method thereof | |
| CN116660784A (en) | Low-side switch load short circuit detection and protection method | |
| CN216252161U (en) | Direct current motor overcurrent detection and anti-blocking circuit module | |
| CN212627128U (en) | IGBT module, motor element and air conditioner | |
| CN110277900B (en) | IGBT driving peak value detection protection circuit | |
| CN110971216B (en) | Overcurrent protection circuit | |
| CN113285484A (en) | Photovoltaic module turn-off device and current sampling single-point fault detection and control method | |
| CN110907837B (en) | Detection circuit and detection method | |
| CN113285587A (en) | Protection device of PFC circuit, control method thereof and motor system | |
| CN113078616A (en) | Rear-stage direct-current power supply circuit | |
| CN219643892U (en) | Transistor operating state acquisition circuit and electronic device | |
| CN210806716U (en) | Over-current protection circuit for driving power supply of motor controller of electric automobile | |
| CN219065589U (en) | Current detection circuit for brushless DC motor drive control system | |
| CN213937422U (en) | Three-phase brushless motor driven non-inductive control motor driving circuit | |
| CN112511143B (en) | IGBT protection circuit and protection method | |
| CN219997252U (en) | Switch detection device, domain controller, automobile chassis and automobile | |
| CN220985310U (en) | Protection circuit, power supply circuit and cleaning device | |
| CN110920545B (en) | Emergency call switch fault detection circuit and car | |
| CN106998056B (en) | Hardware diagnosis protection circuit | |
| CN215072144U (en) | Protection device and motor system of PFC circuit | |
| CN217508259U (en) | Overcurrent protection circuit | |
| CN108426937B (en) | Formaldehyde sensor module, self-diagnosis method and computer-readable storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |