CN212992307U - Drive circuit and circuit board based on AGV dolly - Google Patents
Drive circuit and circuit board based on AGV dolly Download PDFInfo
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- CN212992307U CN212992307U CN202021080818.6U CN202021080818U CN212992307U CN 212992307 U CN212992307 U CN 212992307U CN 202021080818 U CN202021080818 U CN 202021080818U CN 212992307 U CN212992307 U CN 212992307U
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Abstract
The utility model discloses a drive circuit and circuit board based on AGV dolly, including signal input module, signal output module, signal input module and singlechip communication connection are in order to insert driving signal, signal output module is connected with the output electricity of relay and is in order to switch on the output of relay after receiving driving signal, realize signal transmission through setting up optoelectronic coupler between signal input module and the signal output module, optoelectronic coupler's input is located on the signal input module, optoelectronic coupler's output is located on the signal output module. The utility model discloses a drive circuit passes through optoelectronic coupler to transmission signal in order to switch on the relay, makes the load circuit at relay output place switched on, and it utilizes the characteristic that optoelectronic coupler does not have mechanical contact to keep apart the signal input part of system and signal output part to the response speed and the anti electromagnetic wave interference ability of circuit have effectively been improved.
Description
Technical Field
The utility model relates to an industrial robot field, concretely relates to drive circuit and circuit board based on AGV dolly.
Background
With the development and application of the AGV robot, many enterprises attach more and more importance to the parts on the AGV robot. The relay is used as one of important parts on the AGV trolley, can be applied to various types of circuit control, and plays an important role in daily operation of the AGV; however, the common relay driving circuit has the conditions of poor anti-interference capability, no isolation of signal input and output, unstable signal after long-time work and the like. Compared with a relay, the contact of the photoelectric coupler is not mechanically opened or closed, the photoelectric coupler has the input and output isolation functions, the anti-interference capacity of a circuit can be improved, but the power is low, and the photoelectric coupler is not suitable for driving a heavy-current load.
Therefore, if the advantages of the relay and the photocoupler are combined, the signal can be more stable and the relay and the photocoupler can be used for controlling large current.
SUMMERY OF THE UTILITY MODEL
The first invention of the present invention is to provide a driving circuit based on an AGV car, which can be used as a supplementary circuit of a relay driving circuit to turn on the output end of a relay, and has the advantages of high circuit stability and fast response speed.
In order to realize the purpose, the utility model adopts the following technical proposal:
drive circuit based on AGV dolly, including signal input module, signal output module, signal input module and singlechip communication connection are in order to insert driving signal, the output of signal output module and relay is connected in order to switch on the relay after receiving driving signal with the output electricity of relay, realize signal transmission through setting up optoelectronic coupler between signal input module and the signal output module, on the signal input module was located to optoelectronic coupler's input, optoelectronic coupler's output was located on the signal output module.
Compared with the prior art, the utility model discloses a drive circuit based on AGV dolly passes through optoelectronic coupler to transmission signal in order to switch on the relay, makes the load circuit at relay place switched on, and it utilizes the characteristic that optoelectronic coupler does not have mechanical contact to keep apart the signal input part and the signal output part of system to effectively improved the response speed and the anti electromagnetic wave interference ability of circuit, with the response speed and the stability of this promoted circuit. In practical application, can add this circuit on current relay drive circuit, operating personnel can select the output that switches on the relay through this drive circuit as required according to the realization, makes the load circuit at relay output place switch on, or, selects the input that switches on the relay through current relay drive circuit, makes the output of relay switch on.
Preferably, the signal input module includes working power supply and field effect transistor, the positive pole electricity of working power supply and optoelectronic coupler input is connected, the negative pole of optoelectronic coupler input and the D utmost point electric connection of field effect transistor, the S utmost point ground connection of field effect transistor, the G utmost point and the singlechip of field effect transistor are connected to form signal input circuit, work as the signal of telecommunication that the singlechip sent is received to the field effect transistor, signal input circuit switches on. In the scheme, when the single chip microcomputer inputs a high-level signal to the G pole, the S pole and the D pole of the field effect transistor are conducted, the signal input circuit is conducted, the input end of the photoelectric coupler is conducted, and therefore the output end is excited to be conducted.
Preferably, the photoelectric coupler is a phomos photoelectric coupler, the output end of the photoelectric coupler comprises a third pin and a fourth pin, the third pin is electrically connected with the common end of the relay, and the fourth pin is electrically connected with the normally open contact of the relay. In this scheme, photoelectric coupler's output is equivalent to the switch between relay open contact and the public end, switches on when photoelectric coupler's output, and the output of relay switches on to the load circuit who makes the relay place switches on.
Preferably, the signal output module includes a transient suppression diode, and two ends of the transient suppression diode are connected in parallel with the output end of the photoelectric coupler.
Preferably, the signal output module comprises a safety resistor, and the safety resistor is connected in series between the output end of the photoelectric coupler and the relay.
Preferably, the signal input module comprises a voltage stabilizing resistor, and the voltage stabilizing resistor is connected in series between the working power supply and the positive electrode of the input end of the photoelectric coupler.
Preferably, the signal input module comprises a light emitting diode, and two ends of the light emitting diode are connected with two ends of the output end of the photoelectric coupler in parallel one by one. The scheme is used for indicating the working state of the driving circuit, when the signal input module receives a signal of the single chip microcomputer, the signal input circuit is conducted, the light emitting diode is conducted to emit light, and when the signal input module does not receive the signal, the light emitting diode is cut off.
Preferably, the signal input module includes a filter circuit, the filter circuit includes a first capacitor and a second capacitor, current input ends of the first capacitor and the second capacitor are electrically connected to the working power supply, and a negative electrode of the first capacitor and a negative electrode of the second capacitor are grounded. The filter circuit of the scheme is provided with an electric signal for conditioning the output of the power supply.
Preferably, the LED lamp also comprises a first current-limiting resistor, a second current-limiting resistor and a third current-limiting resistor, wherein the first current-limiting resistor is connected in series between the singlechip and the G pole of the field-effect tube, one end of the second current-limiting resistor is connected in parallel with the G pole of the field-effect tube, the other end of the second current-limiting resistor is grounded, and the third current-limiting resistor is connected in series between the LED and the input end of the photoelectric coupler. In the scheme, the first current-limiting resistor and the second current-limiting resistor can prevent the device from being damaged by overlarge current flowing to the G pole of the singlechip, and the third current-limiting resistor can prevent the light-emitting diode from being damaged by the overlarge current flowing to the diode.
Another object of the present invention is to provide a circuit board, which includes a circuit board body and the driving circuit of the above-mentioned scheme. The utility model discloses a circuit board is owing to applied the drive circuit of above-mentioned scheme, consequently, has all advantages of above-mentioned scheme.
Drawings
FIG. 1 is a schematic diagram of the present invention;
fig. 2 is a circuit layout diagram of the present invention.
Description of reference numerals:
the LED driving circuit comprises a first current-limiting resistor R1, a second current-limiting resistor R2, a third current-limiting resistor R3, a voltage-stabilizing resistor R4, a fuse resistor F1, a light-emitting diode D1, a first capacitor C1, a second capacitor C2, a photoelectric coupler U1 and a field-effect tube U2.
Detailed Description
The technical scheme of the utility model is further explained according to the attached drawings as follows:
referring to fig. 1-2, the utility model discloses a drive circuit based on AGV dolly, including signal input module, signal output module, signal input module and singlechip communication connection are in order to insert drive signal, the output of signal output module and relay is connected in order to switch on the relay after receiving drive signal, realize signal transmission through setting up optoelectronic coupler U1 between signal input module and the signal output module, optoelectronic coupler U1's input is located on the signal input module, optoelectronic coupler U1's output is located on the signal output module.
The signal input module comprises a working power supply and a field-effect tube U2, wherein the working power supply is electrically connected with the positive electrode of the input end of a photoelectric coupler U1, the negative electrode of the input end of the photoelectric coupler U1 is electrically connected with the D electrode of the field-effect tube U2, the S electrode of the field-effect tube U2 is grounded, the G electrode of the field-effect tube U2 is connected with the single chip microcomputer to form a signal input circuit, when the field-effect tube U2 receives an electric signal sent by the single chip microcomputer, and the signal input circuit is conducted. In the scheme, when the single chip microcomputer inputs a high-level signal to the G pole, the S pole and the D pole of the field effect transistor U2 are conducted, the signal input circuit is conducted, the input end of the photoelectric coupler U1 is conducted, and therefore the output end is excited to be conducted.
The photoelectric coupler U1 is a PhotoMOS photoelectric coupler U1, the output end of the photoelectric coupler U1 comprises a third pin and a fourth pin, the third pin is electrically connected with the common end of the relay, and the fourth pin is electrically connected with the normally open contact of the relay. In this scheme, photoelectric coupler U1's output is equivalent to the switch between relay open contact and the public end, and when photoelectric coupler U1's output switched on, the output of relay switched on to the load circuit who makes the relay place switches on.
The signal output module comprises a transient suppression diode, and two ends of the transient suppression diode are connected with the output end of the photoelectric coupler U1 in parallel.
The signal output module comprises a fuse resistor F1, and the fuse resistor F1 is connected in series between the output end of the photoelectric coupler U1 and the relay.
The signal input module comprises a voltage-stabilizing resistor R4, and the voltage-stabilizing resistor R4 is connected in series between the working power supply and the positive electrode of the input end of the photoelectric coupler U1.
The signal input module comprises a light emitting diode D1, and two ends of the light emitting diode D1 are connected with two ends of the output end of the photoelectric coupler U1 in parallel one by one. The scheme is used for indicating the working state of the driving circuit, when the signal input module receives a signal of the single chip microcomputer, the signal input circuit is conducted, the light emitting diode D1 is conducted to emit light, and when the signal input module does not receive the signal, the light emitting diode D1 is cut off.
The signal input module comprises a filter circuit, the filter circuit comprises a first capacitor C1 and a second capacitor C2, current input ends of the first capacitor C1 and the second capacitor C2 are electrically connected with a working power supply, and a negative electrode of the first capacitor C1 and a negative electrode of the second capacitor C2 are grounded.
In an embodiment, the light-emitting diode further comprises a first current-limiting resistor R1, a second current-limiting resistor R2 and a third current-limiting resistor R3, the first current-limiting resistor R1 is connected in series between the single chip microcomputer and the G pole of the field-effect transistor U2, one end of the second current-limiting resistor R2 is connected in parallel with the G pole of the field-effect transistor U2, the other end of the second current-limiting resistor R2 is grounded, and the third current-limiting resistor R3 is connected in series between the light-emitting diode D1 and the input end of the photocoupler U1.
Compared with the prior art, the utility model discloses a drive circuit based on AGV dolly passes through optoelectronic coupler U1 to transmission signal in order to switch on the relay, makes the load circuit at relay place switched on, and it utilizes the characteristic that optoelectronic coupler U1 does not have mechanical contact to be isolated with the signal input part and the signal output part of system to effectively improved the response speed and the anti electromagnetic wave interference ability of circuit, with the response speed and the stability of this promoted circuit. In practical application, can add this circuit on current relay drive circuit, operating personnel can select the output that switches on the relay through this drive circuit as required according to the realization, makes the load circuit at relay output place switch on, or, selects the input that switches on the relay through current relay drive circuit, makes the output of relay switch on.
The utility model discloses still disclose a circuit board, the circuit board includes circuit board body and the drive circuit of above-mentioned embodiment.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The utility model provides a drive circuit based on AGV dolly which characterized in that: including signal input module, signal output module, signal input module and singlechip communication connection are in order to insert drive signal, the output that signal output module and relay's output electricity are connected in order to switch on the relay after receiving drive signal, realize signal transmission through setting up photoelectric coupler between signal input module and the signal output module, photoelectric coupler's input is located on the signal input module, photoelectric coupler's output is located on the signal output module.
2. The AGV-based drive circuit of claim 1, further comprising: the signal input module includes working power supply and field effect transistor, the positive pole electricity of working power supply and optoelectronic coupler input is connected, the negative pole of optoelectronic coupler input and the D utmost point electric connection of field effect transistor, the S utmost point ground connection of field effect transistor, the G utmost point and the singlechip of field effect transistor are connected to form signal input circuit, work as the signal of telecommunication that the singlechip sent is received to the field effect transistor, signal input circuit switches on.
3. The AGV drive circuit of claim 1 or 2 wherein: the photoelectric coupler is a PhotoMOS type photoelectric coupler, the output end of the photoelectric coupler comprises a third pin and a fourth pin, the third pin is electrically connected with the common end of the relay, and the fourth pin is electrically connected with the normally open contact of the relay.
4. The AGV drive circuit of claim 3 wherein: the signal output module comprises a transient suppression diode, and two ends of the transient suppression diode are connected with the output end of the photoelectric coupler in parallel.
5. The AGV drive circuit of claim 3 wherein: the signal output module comprises a safety resistor, and the safety resistor is connected between the output end of the photoelectric coupler and the relay in series.
6. The AGV-based drive circuit of claim 2, further comprising: the signal input module comprises a voltage stabilizing resistor, and the voltage stabilizing resistor is connected in series between the working power supply and the positive electrode of the input end of the photoelectric coupler.
7. The AGV drive circuit of claim 3 wherein: the signal input module comprises light emitting diodes, and two ends of the light emitting diodes are connected with two ends of the output end of the photoelectric coupler in parallel one by one.
8. The AGV-based drive circuit of claim 2, further comprising: the signal input module comprises a filter circuit, the filter circuit comprises a first capacitor and a second capacitor, current input ends of the first capacitor and the second capacitor are electrically connected with a working power supply, and a negative electrode of the first capacitor and a negative electrode of the second capacitor are grounded.
9. The AGV drive circuit of claim 7 wherein: the LED driving circuit further comprises a first current limiting resistor, a second current limiting resistor and a third current limiting resistor, wherein the first current limiting resistor is connected between the single chip microcomputer and the G pole of the field effect transistor in series, one end of the second current limiting resistor is connected with the G pole of the field effect transistor in parallel, the other end of the second current limiting resistor is grounded, and the third current limiting resistor is connected between the light emitting diode and the input end of the photoelectric coupler in series.
10. The circuit board, including the circuit board body with set up circuit on the circuit board body, its characterized in that: the circuit is an AGV cart based drive circuit according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021080818.6U CN212992307U (en) | 2020-06-12 | 2020-06-12 | Drive circuit and circuit board based on AGV dolly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021080818.6U CN212992307U (en) | 2020-06-12 | 2020-06-12 | Drive circuit and circuit board based on AGV dolly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212992307U true CN212992307U (en) | 2021-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021080818.6U Active CN212992307U (en) | 2020-06-12 | 2020-06-12 | Drive circuit and circuit board based on AGV dolly |
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| Country | Link |
|---|---|
| CN (1) | CN212992307U (en) |
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2020
- 2020-06-12 CN CN202021080818.6U patent/CN212992307U/en active Active
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