CN211830206U - Prevent motor control circuit of static circuit and metal button - Google Patents
Prevent motor control circuit of static circuit and metal button Download PDFInfo
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- CN211830206U CN211830206U CN202020437400.XU CN202020437400U CN211830206U CN 211830206 U CN211830206 U CN 211830206U CN 202020437400 U CN202020437400 U CN 202020437400U CN 211830206 U CN211830206 U CN 211830206U
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Abstract
The utility model relates to the field of electronic technology, especially, relate to a prevent motor control circuit of static circuit and metal button. The anti-static circuit includes: the capacitor comprises capacitors C1, C2, C3 and diodes D1 and D2, wherein one end of the capacitor C1 is connected with the metal key, the other end of the capacitor C2 is connected with one end of the capacitor C1 and the anode of the diode D2, the other end of the capacitor C2 is connected with the anode of the diode D1, one end of the capacitor C3 and the common ground, and the other end of the capacitor C3 is connected with the cathode of the diode D2 and a power supply end. Through using the utility model discloses, can realize beneficial effect: the electrostatic signal can be consumed by the capacitors C1 and C2 and the diodes D1 and D2, so that the electrostatic signal is prevented from directly reaching the chip, and the chip is protected.
Description
Technical Field
The utility model relates to the field of electronic technology, especially, relate to a prevent motor control circuit of static circuit and metal button.
Background
In view of the fact that the durability of metal keys is higher than that of general plastic keys or rubber keys, metal keys are used in many touch type operators. The metal keys are directly contacted by hands, and the problem of static electricity is inevitable. When the metal material is adopted as the touch key, static electricity can be directly conducted to the chip through the metal, so that the chip is damaged.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a prevent motor control circuit of static circuit and metal button.
An anti-static circuit comprising: the capacitor comprises capacitors C1, C2, C3 and diodes D1 and D2, wherein one end of the capacitor C1 is connected with the metal key, the other end of the capacitor C2 is connected with one end of the capacitor C1 and the anode of the diode D2, the other end of the capacitor C2 is connected with the anode of the diode D1, one end of the capacitor C3 and the common ground, and the other end of the capacitor C3 is connected with the cathode of the diode D2 and a power supply end.
The utility model provides a motor control circuit of metal button, its characterized in that, includes ascending keying circuit, decline keying circuit, signal acquisition circuit, processing module and control circuit, the keying circuit that rises includes above-mentioned one kind and prevents the static circuit, decline keying circuit includes above-mentioned one kind and prevents the static circuit, rises keying circuit and decline keying circuit and connects signal acquisition circuit respectively, signal acquisition circuit connection processing module, processing module connects control circuit.
Preferably, the signal acquisition circuit includes: the signal acquisition module U1, triodes Q1, Q2, resistors R1, R2 and a connector J1, wherein an input end of the signal acquisition module U1 is connected with output ends of a rising key circuit and a falling key circuit, a first output end of the signal acquisition module U1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with a base of a triode Q1, an emitter of the triode Q1 is connected with a common ground, a collector of a triode Q1 is connected with a first end of a connector J1, a second output end of the signal acquisition module U1 is connected with one end of a resistor R2, the other end of the resistor R2 is connected with a base of a triode Q2, an emitter of the triode Q2 is connected with the common ground, a collector of the triode Q2 is connected with a second end of a connector J1, a third end of the connector J1 is connected with a power supply end, and a fourth end of the connector J1.
Preferably, the signal acquisition circuit further comprises: one end of the capacitor C4 is connected to the signal acquisition module U1 and a power supply end, the other end of the capacitor C4 is connected to a common ground, one end of the capacitor C5 is connected to the signal acquisition module U1 and the power supply end, and the other end of the capacitor C5 is connected to the common ground.
Preferably, the processing module adopts a control chip with the model of MC9S 08.
Preferably, the control circuit includes: the input end of the control chip U2 is connected with the processing module, the first output end of the control chip U2 is connected with the first end of the relay KA1 and the anode of the diode D3, the second end of the relay KA1 is connected with a power supply end, the cathode of the diode D3 is connected with a ground power source end, the third end of the relay KA1 is connected with one end of the lifting motor, the fourth end of the relay KA1 is connected with the common ground, the fifth end of the relay KA1 is connected with the power supply end, the second output end of the control chip U2 is connected with the first end of the relay KA2 and the anode of the diode D4, the second end of the relay KA2 is connected with the power supply end, the cathode of the diode D4 is connected with the ground power source end, the third end of the relay KA 5 is connected with the other end of the lifting motor, the fourth end of the relay 2 823 is connected with the common ground, and the fifth end of the relay KA2 is connected with.
Through using the utility model discloses, can realize following effect:
1. the electrostatic signal can be consumed by the capacitors C1 and C2 and the diodes D1 and D2, so that the electrostatic signal is prevented from directly reaching the chip, and the chip is protected.
2. The grounding capacitor is added at the input end of the metal key, so that abnormal phenomena such as automatic lifting of the product caused by static electricity are avoided.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a circuit diagram of an anti-static circuit according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a motor control circuit of a metal key according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a processing module in a motor control circuit of a metal key according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be further described below with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Example one
The present embodiment provides an anti-static circuit, as shown in fig. 1, including: the capacitor comprises capacitors C1, C2, C3 and diodes D1 and D2, wherein one end of the capacitor C1 is connected with the metal key, the other end of the capacitor C2 is connected with one end of the capacitor C1 and the anode of the diode D2, the other end of the capacitor C2 is connected with the anode of the diode D1, one end of the capacitor C3 and the common ground, and the other end of the capacitor C3 is connected with the cathode of the diode D2 and a power supply end.
If the metal key is pressed to generate an electrostatic signal, the electrostatic signal is consumed through the capacitors C1 and C2 and the diodes D1 and D2, so that the electrostatic signal is prevented from directly reaching the chip, and the chip is protected.
Example two
The embodiment provides a motor control circuit of a metal key, as shown in fig. 2, the motor control circuit comprises a rising key circuit, a falling key circuit, a signal acquisition circuit, a processing module and a control circuit, wherein the rising key circuit comprises an anti-static circuit according to the first embodiment, the falling key circuit comprises an anti-static circuit according to the first embodiment, the rising key circuit and the falling key circuit are respectively connected with the signal acquisition circuit, the signal acquisition circuit is connected with the processing module, and the processing module is connected with the control circuit.
The structure of the descending key circuit is the same as that of the ascending key circuit. The rise key circuit includes: the circuit comprises capacitors C1, C2, C3 and diodes D1 and D2, wherein one end of the capacitor C1 is connected with a metal key K1 (a rising key), the other end of the capacitor C2 is connected with one end of the capacitor C1, the cathode of the diode D1 and the anode of the diode D2, the other end of the capacitor C2 is connected with the anode of the diode D1, one end of the capacitor C3 and the common ground, and the other end of the capacitor C3 is connected with the cathode of the diode D2 and a power supply end. The falling key circuit includes: the circuit comprises capacitors C6, C7, C8 and diodes D5 and D6, one end of a capacitor C6 is connected with a metal key K2 (a descending key), the other end of the capacitor C6 is connected with one end of a capacitor C5, the cathode of the diode D5 and the anode of a diode D6, the other end of the capacitor C7 is connected with the anode of a diode D5, one end of a capacitor C8 and a common ground, and the other end of a capacitor C8 is connected with the cathode of a diode D6 and a power supply end.
Specifically, the signal acquisition circuit includes: the signal acquisition module U1, triodes Q1, Q2, resistors R1, R2 and a connector J1, wherein an input end of the signal acquisition module U1 is connected with output ends of a rising key circuit and a falling key circuit, a first output end of the signal acquisition module U1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with a base of a triode Q1, an emitter of the triode Q1 is connected with a common ground, a collector of a triode Q1 is connected with a first end of a connector J1, a second output end of the signal acquisition module U1 is connected with one end of a resistor R2, the other end of the resistor R2 is connected with a base of a triode Q2, an emitter of the triode Q2 is connected with the common ground, a collector of the triode Q2 is connected with a second end of a connector J1, a third end of the connector J1 is connected with a power supply end, and a fourth end of the connector J1.
Specifically, the signal acquisition circuit further includes: one end of the capacitor C4 is connected to the signal acquisition module U1 and a power supply end, the other end of the capacitor C4 is connected to a common ground, one end of the capacitor C5 is connected to the signal acquisition module U1 and the power supply end, and the other end of the capacitor C5 is connected to the common ground.
Specifically, as shown in fig. 3, the processing module adopts a control chip with model number MC9S 08.
Specifically, the control circuit includes: the input end of the control chip U2 is connected with the processing module, the first output end of the control chip U2 is connected with the first end of the relay KA1 and the anode of the diode D3, the second end of the relay KA1 is connected with a power supply end, the cathode of the diode D3 is connected with a ground power source end, the third end of the relay KA1 is connected with one end of the lifting motor, the fourth end of the relay KA1 is connected with the common ground, the fifth end of the relay KA1 is connected with the power supply end, the second output end of the control chip U2 is connected with the first end of the relay KA2 and the anode of the diode D4, the second end of the relay KA2 is connected with the power supply end, the cathode of the diode D4 is connected with the ground power source end, the third end of the relay KA 5 is connected with the other end of the lifting motor, the fourth end of the relay 2 823 is connected with the common ground, and the fifth end of the relay KA2 is connected with.
If the metal key is pressed to generate an electrostatic signal, the electrostatic signal is consumed through the capacitors C1 and C2 and the diodes D1 and D2, so that the electrostatic signal is prevented from directly reaching the chip, and the chip is protected.
When the up key is pressed and the down key is not pressed, the signal acquisition module U1 acquires a voltage signal output by the up key circuit and outputs a high-level signal to control the conduction of the triode Q1, so that the voltage of the first end O1 of the connector J1 is pulled down. At this time, the two I/O ports of the processing module respectively receive the low voltage of the first terminal O1 and the high voltage of the second terminal O2 of the connector J1 and transmit a control signal to the control chip U2. After receiving the control signal, the control chip U2 outputs a voltage signal to control the relay KA1 to be switched on, so that the lifting motor can rotate forwards.
When the descending key is pressed and the ascending key is not pressed, the reverse rotation of the lifting motor is realized, and the principle of the reverse rotation is the same as that of the forward rotation, so the repeated description is omitted.
Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. An anti-static circuit, comprising: the capacitor comprises capacitors C1, C2, C3 and diodes D1 and D2, wherein one end of the capacitor C1 is connected with the metal key, the other end of the capacitor C2 is connected with one end of the capacitor C1 and the anode of the diode D2, the other end of the capacitor C2 is connected with the anode of the diode D1, one end of the capacitor C3 and the common ground, and the other end of the capacitor C3 is connected with the cathode of the diode D2 and a power supply end.
2. The motor control circuit of the metal key is characterized by comprising a rising key circuit, a falling key circuit, a signal acquisition circuit, a processing module and a control circuit, wherein the rising key circuit comprises the anti-static circuit as claimed in claim 1, the falling key circuit comprises the anti-static circuit as claimed in claim 1, the rising key circuit and the falling key circuit are respectively connected with the signal acquisition circuit, the signal acquisition circuit is connected with the processing module, and the processing module is connected with the control circuit.
3. The metal button motor control circuit of claim 2, wherein the signal acquisition circuit comprises: the signal acquisition module U1, triodes Q1, Q2, resistors R1, R2 and a connector J1, wherein an input end of the signal acquisition module U1 is connected with output ends of a rising key circuit and a falling key circuit, a first output end of the signal acquisition module U1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with a base of a triode Q1, an emitter of the triode Q1 is connected with a common ground, a collector of a triode Q1 is connected with a first end of a connector J1, a second output end of the signal acquisition module U1 is connected with one end of a resistor R2, the other end of the resistor R2 is connected with a base of a triode Q2, an emitter of the triode Q2 is connected with the common ground, a collector of the triode Q2 is connected with a second end of a connector J1, a third end of the connector J1 is connected with a power supply end, and a fourth end of the connector J1.
4. The metal button motor control circuit of claim 3, wherein the signal acquisition circuit further comprises: one end of the capacitor C4 is connected to the signal acquisition module U1 and a power supply end, the other end of the capacitor C4 is connected to a common ground, one end of the capacitor C5 is connected to the signal acquisition module U1 and the power supply end, and the other end of the capacitor C5 is connected to the common ground.
5. The metal button motor control circuit as claimed in claim 2, wherein the processing module is a control chip of type MC9S 08.
6. The metal button motor control circuit according to claim 2, wherein the control circuit comprises: the input end of the control chip U2 is connected with the processing module, the first output end of the control chip U2 is connected with the first end of the relay KA1 and the anode of the diode D3, the second end of the relay KA1 is connected with a power supply end, the cathode of the diode D3 is connected with a ground power source end, the third end of the relay KA1 is connected with one end of the lifting motor, the fourth end of the relay KA1 is connected with the common ground, the fifth end of the relay KA1 is connected with the power supply end, the second output end of the control chip U2 is connected with the first end of the relay KA2 and the anode of the diode D4, the second end of the relay KA2 is connected with the power supply end, the cathode of the diode D4 is connected with the ground power source end, the third end of the relay KA 5 is connected with the other end of the lifting motor, the fourth end of the relay 2 823 is connected with the common ground, and the fifth end of the relay KA2 is connected with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020437400.XU CN211830206U (en) | 2020-03-31 | 2020-03-31 | Prevent motor control circuit of static circuit and metal button |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020437400.XU CN211830206U (en) | 2020-03-31 | 2020-03-31 | Prevent motor control circuit of static circuit and metal button |
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| Publication Number | Publication Date |
|---|---|
| CN211830206U true CN211830206U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020437400.XU Active CN211830206U (en) | 2020-03-31 | 2020-03-31 | Prevent motor control circuit of static circuit and metal button |
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| CN (1) | CN211830206U (en) |
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- 2020-03-31 CN CN202020437400.XU patent/CN211830206U/en active Active
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