CN217739750U - Signal transmission circuit and circuit board applied to AGV - Google Patents
Signal transmission circuit and circuit board applied to AGV Download PDFInfo
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- CN217739750U CN217739750U CN202221273127.7U CN202221273127U CN217739750U CN 217739750 U CN217739750 U CN 217739750U CN 202221273127 U CN202221273127 U CN 202221273127U CN 217739750 U CN217739750 U CN 217739750U
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Abstract
The utility model discloses a signal transmission circuit and a circuit board applied to AGV, which comprises a working power supply, a singlechip, a first photoelectric coupler and a second photoelectric coupler; the singlechip is provided with a first control interface and a second signal control interface, one interface of the first photoelectric coupler is used for being connected with the signal input equipment, and the other interface of the first photoelectric coupler is electrically connected with the first control interface to form a first signal transmission loop; one interface of the second photoelectric coupler is used for being connected with the signal receiving equipment, and the other interface of the second photoelectric coupler is electrically connected with the second control interface to form a third signal transmission loop; and the working power supply, the input end of the second photoelectric coupler and the output end of the first photoelectric coupler are sequentially connected and grounded to form a second signal transmission loop. The single chip microcomputer outputs an error signal through any one of the control interfaces, and the signal transmission circuit can not output the signal, so that the single chip microcomputer can be effectively prevented from running away, the problem of outputting the error signal is solved, and the AGV misoperation is avoided, the working process is influenced, and the loss is caused.
Description
Technical Field
The utility model relates to an industrial robot field, concretely relates to be applied to AGV's signal transmission circuit and circuit board.
Background
The AGV main control equipment needs to be connected with each external device to receive or send data, an NPN output mode and a PNP output mode are arranged at the digital connection end of the external device, wherein interface transmission modes between the AGV transfer robot and the external device are generally single transmission modes, so that different interface types of the external device cannot be compatible, and great inconvenience and limitation are brought to daily work of the AGV transfer robot. The conventional AGV main control board enables the AGV main control equipment to be compatible with the input of the two modes at the same time by improving a circuit structure, for example, adding a scheme adopting program control switching. However, if the program is run off in the program control switching mode, various transmission signals of the circuit are disordered, and output error signals are derived, so that the AGV malfunctions, affects automatic operation and generates loss.
Disclosure of Invention
The utility model discloses a first invention aims at overcoming current programme-controlled switching input circuit program and running away when flying, can lead to the problem that transmission signal makes mistakes, provides one kind through the cooperation of singlechip and two optoelectronic couplers, prevents the circuit output error signal's circuit.
In order to realize the purpose, the utility model adopts the following technical proposal:
the signal transmission circuit applied to the AGV comprises a working power supply, a single chip microcomputer, a first photoelectric coupler and a second photoelectric coupler, wherein the working power supply is used for supplying power to the circuit; the singlechip is provided with a first control interface and a second signal control interface, the input end of the first photoelectric coupler comprises a pair of input interfaces, one input interface is used for being connected with signal input equipment, and the other input interface is electrically connected with the first control interface to form a first signal transmission loop; the output end of the second photoelectric coupler comprises a pair of output interfaces, wherein one output interface is used for being connected with the signal receiving equipment, and the other output interface is electrically connected with the second control interface to form a third signal transmission loop; the first photoelectric coupler is a bidirectional photoelectric coupler, and the working power supply, the input end of the second photoelectric coupler and the output end of the first photoelectric coupler are sequentially connected and then grounded to form a second signal transmission loop.
The utility model discloses a signal input and receiving equipment are connected respectively to first signal transmission return circuit, third signal transmission return circuit, through two above-mentioned signal transmission return circuits of second signal transmission return circuit wireless connection to realize signal transmission. When the automatic control system works, the first control signal interface outputs a level signal to control the conduction of the first signal transmission loop, the second control signal interface outputs a level signal to control the conduction of the third signal transmission loop, any control interface outputs an error signal or does not output a signal, and the signal transmission circuit can not output a signal, so that the automatic control system can effectively prevent a singlechip program from running away and outputting an error signal, and avoids the problems that an AGV (automatic guided vehicle) operates mistakenly, the working process is influenced and the loss is caused. Note, the utility model discloses a signal input equipment, signal reception equipment all can be AGV, make AGV can pass through this circuit received signal, still can pass through this circuit send signal.
Preferably, the anti-shake circuit is further included, and the anti-shake circuit is disposed on the first signal transmission loop. The anti-shake circuit is used for preventing shake when the circuit is connected to a working power supply or the ground.
Preferably, the anti-shake circuit is connected in parallel with an input end of the first photoelectric coupler, the anti-shake circuit includes an anti-shake resistor and an anti-shake capacitor, and the anti-shake resistor is connected in parallel with two ends of the anti-shake capacitor. The specific circuit structure design of the anti-shake circuit is provided.
Preferably, the signal output device further comprises a first current limiting resistor, and the first current limiting resistor is connected between the input end of the first photocoupler and the signal output device in series. The scheme has a current limiting function on the first signal transmission loop.
Preferably, the current limiting circuit further comprises a second current limiting resistor, and the first current limiting resistor is connected in series between the input end of the second photocoupler and the output end of the first photocoupler. The scheme has a current limiting function on the second signal transmission loop.
Preferably, the signal transmission circuit is provided with 4 groups in parallel. The scheme enables the first control interface and the second control interface of the single chip microcomputer to simultaneously control 4 groups of circuits, and can be applied to transmission of parallel data.
Preferably, the second photocoupler is a solid-state relay.
A second object of the present invention is to provide a circuit board, which includes a circuit board body and a signal transmission circuit according to the above-mentioned scheme, wherein the signal transmission circuit is disposed on the circuit board body. Compared with the prior art, the utility model discloses a circuit of above-mentioned scheme is used to the circuit board, consequently, has all advantages of above-mentioned scheme.
Drawings
FIG. 1 is a schematic diagram of the present invention;
fig. 2 is an overall circuit layout diagram of the utility model.
Description of reference numerals:
working power VCC, singlechip MCU1, first photoelectric coupler U1, second photoelectric coupler U2, anti-shake resistance R1, anti-shake electric capacity C1, first current-limiting resistance R3, second current-limiting resistance R2.
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 signal transmission circuit applied to an AGV, which comprises a working power supply VCC, a single chip microcomputer MCU1, a first photoelectric coupler U1 and a second photoelectric coupler U2, wherein the working power supply VCC is used for circuit power supply; the singlechip MCU1 is provided with a first control interface, a second signal control interface and a first photoelectric coupler U1, wherein the input end of the first photoelectric coupler U1 comprises at least one pair of input interfaces, one input interface is used for being connected with signal input equipment, and the other input interface is electrically connected with the first control interface to form a first signal transmission loop; the output end of the second photoelectric coupler U2 comprises two output interfaces, wherein one output interface is used for being connected with the signal receiving equipment, and the other output interface is electrically connected with the second control interface to form a third signal transmission loop; first optoelectronic coupler U1 is two-way optoelectronic coupler, and work power VCC, second optoelectronic coupler U2's input, first optoelectronic coupler U1's output connect gradually the back ground connection, form second signal transmission return circuit.
In order to avoid the circuit from shaking when being connected to a working power supply VCC or ground, the circuit further comprises an anti-shaking circuit, and the anti-shaking circuit is arranged on the first signal transmission loop.
The specific scheme of the anti-shake circuit is as follows: the anti-shake circuit is connected with two ends of the first photoelectric coupler U1 in parallel, the anti-shake circuit comprises an anti-shake resistor R1 and an anti-shake capacitor C1, and the anti-shake resistor R1 is connected with two ends of the anti-shake capacitor C1 in parallel.
In order to prevent the current of the first signal transmission loop from being overlarge and damaging devices, the first signal transmission loop is further provided with a first current limiting resistor R3, and the first current limiting resistor R3 is connected between the input end of the first photoelectric coupler U1 and the signal output equipment in series.
In order to prevent the current of the first signal transmission loop from being overlarge and damaging devices, the second signal transmission loop is further provided with a second current limiting resistor R2, and the first current limiting resistor R3 is connected in series between the input end of the second photoelectric coupler U2 and the output end of the first photoelectric coupler U1. Preferably, the signal transmission circuit is provided with 4 groups in parallel. According to the scheme, the first control interface and the second control interface of the single chip microcomputer MCU1 simultaneously control 4 groups of circuits, and the circuit can be applied to transmission of parallel data, such as signal transmission of 4-path sensors.
The second photoelectric coupler U2 is a solid-state relay.
The solid-state relay is AQY210HLA type.
The utility model discloses a signal input and receiving equipment are connected respectively to first signal transmission return circuit, third signal transmission return circuit, through two above-mentioned signal transmission return circuits of second signal transmission return circuit wireless connection to realize signal transmission. During operation, the first signal transmission loop is controlled to be conducted by the output level signal of the first control signal interface, the third signal transmission loop is controlled by the output level signal of the second control signal interface, any control interface outputs an error signal, and the signal transmission circuit can not output signals, so that the programs of the single chip microcomputer MCU1 can be effectively prevented from flying, the problem of outputting the error signal is solved, and the AGV misoperation, which influences the working process and causes loss, is avoided.
The utility model also discloses a circuit board, including the circuit board body to and the signal transmission circuit of above-mentioned embodiment, signal transmission circuit locates on the circuit board body. Compared with the prior art, the utility model discloses a circuit board, its circuit structure is simple nevertheless protects the rank height, can effectively reduce production and maintenance cost.
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, such terms are used for convenience of description and are not to be construed as limiting the invention in any way.
Claims (8)
1. A signal transmission circuit for an AGV, comprising:
the working power supply is used for supplying power to the circuit;
the singlechip is provided with a first control interface and a second signal control interface,
the input end of the first photoelectric coupler comprises at least one pair of input interfaces, wherein one input interface is used for being connected with signal input equipment, and the other input interface is electrically connected with the first control interface to form a first signal transmission loop;
the output end of the second photoelectric coupler comprises a pair of output interfaces, wherein one output interface is used for being connected with the signal receiving equipment, and the other output interface is electrically connected with the second control interface to form a third signal transmission loop;
the first photoelectric coupler is a bidirectional photoelectric coupler, and the working power supply, the input end of the second photoelectric coupler and the output end of the first photoelectric coupler are sequentially connected and then grounded to form a second signal transmission loop.
2. The signal transmission circuit according to claim 1, characterized in that: the anti-shake circuit is arranged on the first signal transmission loop.
3. The signal transmission circuit according to claim 2, characterized in that: the anti-shake circuit is connected with the input end of the first photoelectric coupler in parallel, the anti-shake circuit comprises an anti-shake resistor and an anti-shake capacitor, and the anti-shake resistor is connected with two ends of the anti-shake capacitor in parallel.
4. The signal transmission circuit according to claim 1, characterized in that: the first current-limiting resistor is connected between the input end of the first photoelectric coupler and the signal output equipment in series.
5. The signal transmission circuit of claim 4, wherein: the current limiting circuit further comprises a second current limiting resistor, and the first current limiting resistor is connected between the input end of the second photoelectric coupler and the output end of the first photoelectric coupler in series.
6. The signal transmission circuit according to claim 1, characterized in that: the signal transmission circuit is provided with 4 groups in parallel.
7. The signal transmission circuit according to claim 1, characterized in that: the second photoelectric coupler is a solid-state relay.
8. Circuit board, its characterized in that: comprising a circuit board body and a signal transmission circuit according to any of claims 1-7, said signal transmission circuit being provided on the circuit board body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221273127.7U CN217739750U (en) | 2022-05-24 | 2022-05-24 | Signal transmission circuit and circuit board applied to AGV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221273127.7U CN217739750U (en) | 2022-05-24 | 2022-05-24 | Signal transmission circuit and circuit board applied to AGV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217739750U true CN217739750U (en) | 2022-11-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221273127.7U Active CN217739750U (en) | 2022-05-24 | 2022-05-24 | Signal transmission circuit and circuit board applied to AGV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217739750U (en) |
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2022
- 2022-05-24 CN CN202221273127.7U patent/CN217739750U/en active Active
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