CN210000286U - protection mechanism for realizing inductive load by using integrating circuit - Google Patents
protection mechanism for realizing inductive load by using integrating circuit Download PDFInfo
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- CN210000286U CN210000286U CN201920715130.1U CN201920715130U CN210000286U CN 210000286 U CN210000286 U CN 210000286U CN 201920715130 U CN201920715130 U CN 201920715130U CN 210000286 U CN210000286 U CN 210000286U
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- operational amplifier
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- 230000007246 mechanism Effects 0.000 title claims abstract description 18
- 230000001939 inductive effect Effects 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 34
- 230000005669 field effect Effects 0.000 claims description 11
- 230000010354 integration Effects 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of automotive electronics's windscreen wiper equipment, protection mechanism with integrating circuit realization inductive load especially, including resistance six, end of resistance six and the output electric connection who detects the motor, end electric connection in addition of resistance six has operational amplifier, operational amplifier's end and ground connection electric connection, the current output end and the voltage output end electric connection of detection motor are five and resistance seven respectively, resistance seven end and ground connection electric connection, resistance five end and power electric connection, resistance seven in addition end and resistance five in addition end all with operational amplifier electric connection, this protection mechanism with the inductive load is realized to integrating circuit, surface through setting up operational amplifier is provided with the integrating circuit device, the integrating circuit device is including electric capacity three, thereby reached and utilized the charge time of integrating circuit effectively to distinguish two kinds of different situation, thereby the realization can both effectively work to normal start-up and locked rotor.
Description
Technical Field
The utility model relates to a car electronic system's windscreen wiper technical field especially relates to protection mechanisms with integrating circuit realization perceptual load.
Background
At present, wiper circuit protection of automobiles is mostly realized by adopting a software detection mode, because a software scheme has reaction delay in detection, if an MCU fails, a protection mechanism fails, and thus product failure is caused, protection mechanisms for realizing inductive load by using an integrating circuit are needed.
SUMMERY OF THE UTILITY MODEL
Windscreen wiper circuit protection based on current car mostly adopts the mode that software detected to realize, because the software scheme is reacted in the detection and is postponed, if MCU inefficacy, leads to the protection mechanism to become invalid to cause the technical problem of product trouble, the utility model provides an realize the protection mechanism of perceptual load with integrating circuit.
The utility model provides an protection mechanism with integral circuit realization inductive load, including resistance six, end of resistance six and the output electric connection who detects the motor, end electric connection in addition of resistance six has operational amplifier, operational amplifier's end and ground connection electric connection, the current output end and the voltage output end electric connection respectively of detecting the motor have resistance five and resistance seven, resistance seven end and ground connection electric connection, resistance five end and power electric connection, resistance seven in addition end and resistance five in addition end all with operational amplifier electric connection, operational amplifier's surface is provided with integral circuit device, integral circuit device is including electric capacity three.
Preferably, an end of the capacitor three is electrically connected to a surface of the resistor six, another end of the capacitor three is electrically connected to a surface of the operational amplifier, and the capacitor three and the resistor six constitute an integrating circuit.
Preferably, the end of the capacitor three and the end of the operational amplifier are both electrically connected with a diode, and the other end of the diode is respectively electrically connected with a capacitor and a resistor four.
Preferably, the end of the capacitor and the end of the resistor four are electrically connected to a P-channel insulated gate field effect transistor, and the end of the P-channel insulated gate field effect transistor is electrically connected to ground.
Preferably, the other end of the P-channel insulated gate field effect transistor is electrically connected with a second resistor, and the other end of the second resistor extends to the input or output end.
Preferably, the terminal of the operational amplifier is electrically connected to a power supply, the terminal of the operational amplifier is electrically connected to a second capacitor, and the terminal of the second capacitor is electrically connected to ground.
The utility model provides a beneficial effect does:
1. the surface through setting up operational amplifier is provided with the integral circuit device, the integral circuit device is including electric capacity three, thereby reached and utilized integral circuit's charge time to effectively distinguish two kinds of different situation, thereby realize can both effectively work to normal start and locked rotor, the motor starts the current that has a great amount very much, the operating current reduces to normal operating current after the start, current when the motor locked rotor is big with appearance of the current in the moment of starting, so can't distinguish starting current or the electric current that locked rotor produced with like the automatic negative feedback principle of circuit, the event adopts integral circuit can distinguish this condition, because the starting current time is short, the time that the electric current that starts from beginning to trigger to the start takes place is short, the change of electric current is big, and locked rotor after normal work, the electric current change from operating condition to locked rotor does not have the start.
Drawings
FIG. 1 is a schematic diagram of a protection mechanism for implementing an inductive load with an integration circuit;
in the figure, 1 is a resistor six, 2 is an operational amplifier, 3 is a resistor five, 4 is a resistor seven, 5 is a capacitor three, 6 is a diode, 7 is a capacitor , 8 is a resistor four, 9 is a P-channel insulated gate field effect transistor, 10 is a resistor two, 11 is a capacitor two.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments, not all embodiments, of the present invention .
Referring to fig. 1, protection mechanisms for realizing an inductive load by using an integrating circuit, including a resistor six 1, wherein an terminal of the resistor six 1 is electrically connected to an output terminal of a detection motor, another terminal of the resistor six 1 is electrically connected to an operational amplifier 2, a terminal of the operational amplifier 2 is electrically connected to ground, a terminal of the operational amplifier 2 is electrically connected to a power supply, a terminal of the operational amplifier 2 is electrically connected to a capacitor two 11, and a terminal of the capacitor two 11 is electrically connected to ground;
the surface of the operational amplifier 2 is provided with an integrating circuit device, the integrating circuit device comprises a capacitor three 5, a end of the capacitor three 5 is electrically connected with the surface of a resistor six 1, the other end of the capacitor three 5 is electrically connected with the surface of the operational amplifier 2, the capacitor three 5 and the resistor six 1 form an integrating circuit, both a end of the capacitor three 5 and a end of the operational amplifier 2 are electrically connected with a diode 6, the other end of the diode 6 is electrically connected with a capacitor and a resistor four 8 respectively, both an end of the capacitor 637 and a end of the resistor four 8 are electrically connected with a P-channel insulated gate field effect tube 9, a end of the P-channel insulated gate field effect tube 9 is electrically connected with the ground, the other end of the P-channel insulated gate field effect tube 9 is electrically connected with a resistor two 10, the other end of the resistor two 10 extends to an input end or output end, the integrating circuit device is arranged on the surface of the operational amplifier 2, the integrating circuit device comprises the capacitor three 5, thereby effectively distinguishing two charging time of the integrating circuit from different working conditions, effectively distinguishing the normal working current from the normal working current and the working current blocking condition of the starting current blocking and the starting current blocking when the motor is started, the motor starting current blocking is changed, the motor starting current blocking in a short time, the normal working condition that the motor starting current blocking condition can be changed, and the motor starting current blocking condition that the motor starting current blocking condition can be changed from the motor starting current blocking condition that the motor is.
The working principle is that a circuit adopts the voltage division setting of a resistor five 3 and a resistor seven 4, the reference value of the corresponding current and the corresponding voltage value when the motor normally works can be obtained, a resistor six 1 detects the actual output current and the corresponding voltage value output by the motor, a capacitor three 5 and a resistor six 1 form an integrating circuit, the time constant of integration is adjusted by adjusting the capacitor three 5 and the resistor six 1, when the load is subjected to overcurrent protection, the integrating circuit formed by an operational amplifier 2 is charged by the resistor six 1 and the capacitor three 5, the diode 6 is enabled to protect output and drive a P-channel insulated gate field effect tube 9 by exceeding the voltage division value of the resistor five 3 and the resistor seven 4, the input can be locked, the output is disabled, the actual control effect is achieved, when saturation is cancelled, the recovery is not immediately realized, the equal voltage of the resistor four 8 and the capacitor 7 is discharged until the output of the P-channel insulated gate field effect tube 9 is closed, the normal working state is recovered, and in addition, the protection of the circuit can automatically eliminate the protection error protection caused by various.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
- The protection mechanism for realizing the inductive load by using the integrating circuit comprises a resistor six (1), and is characterized in that a end of the resistor six (1) is electrically connected with an output end of a detection motor, the other end of the resistor six (1) is electrically connected with an operational amplifier (2), a end of the operational amplifier (2) is electrically connected with the ground, a current output end and a voltage output end of the detection motor are respectively electrically connected with a resistor five (3) and a resistor seven (4), a end of the resistor seven (4) is electrically connected with the ground, a end of the resistor five (3) is electrically connected with a power supply, the other end of the resistor seven (4) and the other end of the resistor five (3) are electrically connected with the operational amplifier (2), an integrating circuit device is arranged on the surface of the operational amplifier (2), and comprises a capacitor three (5).
- 2. The protection mechanism for inductive loads by using an integration circuit according to claim 1, wherein the terminal of the capacitor three (5) is electrically connected to the surface of the resistor six (1), the other terminal of the capacitor three (5) is electrically connected to the surface of the operational amplifier (2), and the capacitor three (5) and the resistor six (1) constitute the integration circuit.
- 3. The protection mechanism for inductive loads by using an integration circuit according to claim 1, wherein a diode (6) is electrically connected to both the terminal of the capacitor three (5) and the terminal of the operational amplifier (2), and a capacitor (7) and a resistor four (8) are electrically connected to the other terminal of the diode (6), respectively.
- 4. The protection mechanism for realizing inductive load by using integration circuit as claimed in claim 3, wherein the terminal of the capacitor (7) and the terminal of the resistor IV (8) are both electrically connected to a P-channel insulated gate field effect transistor (9), and the terminal of the P-channel insulated gate field effect transistor (9) is electrically connected to ground.
- 5. The protection mechanism for inductive loads by using an integration circuit according to claim 4, wherein a second resistor (10) is electrically connected to the other terminal of the P-channel IGBT (9), and the other terminal of the second resistor (10) extends to the input or output terminal.
- 6. The protection mechanism for inductive loads using integration circuit as claimed in claim 1, wherein the terminal of the operational amplifier (2) is electrically connected to a power supply, the terminal of the operational amplifier (2) is electrically connected to the second capacitor (11), and the terminal of the second capacitor (11) is electrically connected to ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920715130.1U CN210000286U (en) | 2019-05-19 | 2019-05-19 | protection mechanism for realizing inductive load by using integrating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920715130.1U CN210000286U (en) | 2019-05-19 | 2019-05-19 | protection mechanism for realizing inductive load by using integrating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210000286U true CN210000286U (en) | 2020-01-31 |
Family
ID=69307218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920715130.1U Expired - Fee Related CN210000286U (en) | 2019-05-19 | 2019-05-19 | protection mechanism for realizing inductive load by using integrating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210000286U (en) |
-
2019
- 2019-05-19 CN CN201920715130.1U patent/CN210000286U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 705, Yibo science and technology innovation center, no.1999, Wenchuan Road, Baoshan District, Shanghai, 201209 Patentee after: Shanghai Fangyan Intelligent Technology Co.,Ltd. Address before: Room 705, Yibo science and technology innovation center, no.1999, Wenchuan Road, Baoshan District, Shanghai, 201209 Patentee before: SHANGHAI FANGYAN INDUSTRY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200131 |