CN217159912U - Signal conversion circuit - Google Patents
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- CN217159912U CN217159912U CN202221746253.XU CN202221746253U CN217159912U CN 217159912 U CN217159912 U CN 217159912U CN 202221746253 U CN202221746253 U CN 202221746253U CN 217159912 U CN217159912 U CN 217159912U
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Abstract
The utility model discloses a signal conversion circuit is applied to underwater robot, include: the input end of the signal input circuit is connected with a plurality of sensors with different communication protocols, and the output end of the signal input circuit is connected with the conversion circuit; the conversion circuit is connected with the CAN output circuit; and the CAN output circuit is connected with the main control chip of the underwater robot and is used for transmitting the digital signals to the main control chip of the underwater robot. The sensor of many different communication protocols carries out the collection of environmental data to the environment that underwater robot is located, and then by signal input circuit with these environmental data transmission for converting circuit, converting circuit converts the required digital signal of CAN communication with the received environmental data to the master control chip of underwater robot is unified to export by CAN output circuit. After the environment data are uniformly output through the CAN output circuit, the circuit structure is simplified, the cost is reduced, and later maintenance and maintenance are facilitated.
Description
Technical Field
The utility model relates to a signal conversion technology field especially relates to a signal conversion circuit.
Background
An underwater robot is also called an unmanned remote control submersible, is a limit operation robot working underwater, has severe underwater environment and danger, and has limited diving depth, so the underwater robot becomes an important tool for developing underwater. The underwater robot carries out the testing job under water, because the complicacy of environment under water, the motion of robot under water is directly influenced, consequently need gather underwater environment data in real time, however because different environment data need different communication protocol's sensor to gather, among the prior art, when exporting these environment data to the outside, often also adopt to correspond communication protocol and transmit, this just leads to cost-push, and the circuit is loaded down with trivial details, is unfavorable for later maintenance and maintenance.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a signal conversion circuit in order to solve the above problems.
A signal conversion circuit is applied to an underwater robot and comprises:
the input end of the signal input circuit is connected with a plurality of sensors with different communication protocols, and the output end of the signal input circuit is connected with the conversion circuit and is used for amplifying or inhibiting the environmental data collected by the sensors and then transmitting the environmental data to the conversion circuit;
the conversion circuit is connected with the CAN output circuit and used for converting the received environmental data into digital signals required by CAN communication and transmitting the digital signals to the CAN output circuit;
and the CAN output circuit is connected with a main control chip of the underwater robot and is used for transmitting the digital signal to the main control chip of the underwater robot.
In one embodiment, the signal input circuit includes:
the input end of the voltage signal input circuit is connected with a first sensor for outputting a voltage signal, and the output end of the voltage signal input circuit is connected with the conversion circuit and used for transmitting the voltage signal to the conversion circuit;
the input end of the current signal input circuit is connected with the second sensor for outputting a current signal, and the output end of the current signal input circuit is connected with the conversion circuit and used for transmitting the current signal to the conversion circuit;
the input end of the switching signal input circuit is connected with a third sensor for outputting a switching signal, and the output end of the switching signal input circuit is connected with the conversion circuit and used for transmitting the switching signal to the conversion circuit;
the input end of the RS485 communication circuit is connected with a fourth sensor with an RS485 communication protocol, and the output end of the RS485 communication circuit is connected with the conversion circuit and used for transmitting a first differential signal output by the fourth sensor to the conversion circuit;
the input end of the RS422 communication circuit is connected with a fifth sensor with an RS422 communication protocol, and the output end of the RS422 communication circuit is connected with the conversion circuit and is used for transmitting a second differential signal output by the fifth sensor to the conversion circuit;
and the input end of the RS232 communication circuit is connected with a sixth sensor with an RS232 communication protocol, and the output end of the RS232 communication circuit is connected with the conversion circuit and is used for transmitting the level signal output by the sixth sensor to the conversion circuit.
In one embodiment, the voltage signal input circuit includes: a first bidirectional transient suppressor diode and a first resistor;
one end of the first bidirectional transient suppression diode is connected with one end of the first resistor and the first sensor, and the other end of the first bidirectional transient suppression diode is grounded; the other end of the first resistor is connected with the input end of the conversion circuit.
In one embodiment, the current signal input circuit includes: the circuit comprises a first chip, a second resistor, a third capacitor and a fuse;
the positive input end and the negative input end of the first chip are respectively connected with two ends of the second resistor; the grounding end of the first chip is grounded; the power supply end of the first chip is connected with an external power supply; two ends of the third capacitor are respectively connected with the grounding end and the power supply end of the first chip; the output end of the first chip is connected with the signal input end of the conversion circuit; one end of the fuse is connected with the positive input end of the first chip; the other end of the fuse and the negative electrode input end of the first chip are connected with the second sensor.
In one embodiment, the switching signal input circuit includes: a first optocoupler and a first diode;
the emitter of the first optical coupler is grounded; the collector of the first optocoupler is connected with the cathode of the first diode and the signal input end of the conversion circuit; the anode of the first diode is connected with an external power supply; and the negative electrode and the positive electrode of the first optocoupler are connected with the third sensor for collection.
In one embodiment, the RS485 communication circuit includes: the second chip, the second bidirectional transient suppression diode, the second diode and the fourth capacitor;
the first communication input end of the second chip is connected with the communication output end of the conversion circuit; the first communication output end of the second chip is connected with the communication input end of the conversion circuit; the power supply end of the second chip is connected with an external power supply, and the grounding end of the second chip is grounded; the cathode of the second diode is connected with the power supply end of the second chip; the anode of the second diode is connected with the grounding end of the second chip; the fourth capacitor is connected with the second diode in parallel; two ends of the second bidirectional transient suppression diode are respectively connected with the first 485 pin and the second 485 pin of the second chip; and the first 485 pin and the second 485 pin of the second chip are connected with the fourth sensor.
In one embodiment, the RS232 communication circuitry comprises: a third chip and a fourth chip; the conversion circuit includes: a fifth chip;
the first communication input end of the third chip is connected with the first communication output end of the fourth chip, and the first communication output end of the third chip is connected with the first communication input end of the fourth chip; the second communication input end of the third chip is connected with the first communication output end of the fifth chip; the second communication output end of the third chip is connected with the first communication input end of the fifth chip; the first power supply end of the third chip is connected with an external power supply, and the first grounding end of the third chip is grounded; a second power supply end of the third chip is connected with an external power supply, and a second grounding end of the third chip is grounded; and a second communication input end and a second communication output end of the fourth chip are connected with the sixth sensor.
In one embodiment, the RS232 communication circuit further comprises: a fifth capacitor, a sixth capacitor, a seventh capacitor and an eighth capacitor;
two ends of the fifth capacitor are respectively connected with the first power supply end and the first grounding end of the third chip; the sixth capacitor is connected with the fifth capacitor in parallel; two ends of the seventh capacitor are respectively connected with the second power supply end and the second grounding end of the third chip; the eighth capacitor is connected in parallel with the seventh capacitor.
In one embodiment, the RS422 communication circuitry comprises: the third chip, the third bidirectional transient suppression diode, the fourth bidirectional transient suppression diode, the third resistor and the fourth resistor are connected in series;
a receiver in-phase input end, a receiver reverse-phase input end, a driver in-phase output end and a driver reverse-phase input end of the sixth chip are connected with the fifth sensor; a receiver non-inverting input end and a receiver inverting input end of the sixth chip are connected with two ends of the third bidirectional transient suppression diode; a driver in-phase output end and a driver reverse-phase input end of the sixth chip are connected with two ends of the fourth bidirectional transient suppression diode; the third resistor and the third bidirectional transient suppression diode are connected in parallel; the fourth resistor and the fourth bidirectional transient suppression diode are connected in parallel.
In one embodiment, the CAN output circuit includes: a seventh chip, a ninth capacitor, a tenth capacitor, a fifth bidirectional transient suppression diode, and a sixth bidirectional transient suppression diode;
a first communication input end and a first communication output end of the seventh chip are connected with a communication input end and a communication output end of the conversion circuit; a high-level output end and a ground end of the seventh chip are respectively connected with two ends of the fifth bidirectional transient suppressor diode, and a low-level output end and a ground end of the seventh chip are respectively connected with two ends of the sixth bidirectional transient suppressor diode; the ninth capacitor is connected in parallel with the sixth bidirectional transient suppression diode; the tenth capacitor is connected in parallel with the fifth bidirectional transient suppressor diode.
Implement the embodiment of the utility model provides a, will have following beneficial effect:
the sensor with various different communication protocols collects environmental data of the environment where the underwater robot is located, the signal input circuit transmits the environmental data to the conversion circuit, the conversion circuit converts the received environmental data into digital signals required by CAN communication, and the digital signals are uniformly output to a main control chip of the underwater robot through a CAN output circuit. After the environmental data are uniformly output through the CAN output circuit, the circuit structure is simplified, the cost is reduced, and later maintenance and maintenance are facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Wherein:
FIG. 1 is a block diagram of a signal conversion circuit according to an embodiment;
FIG. 2 is a circuit diagram of a voltage signal input circuit in one embodiment;
FIG. 3 is a circuit diagram of a current signal input circuit in one embodiment;
FIG. 4 is a circuit diagram of a switching signal input circuit in one embodiment;
FIG. 5 is a circuit diagram of an RS485 communication circuit in one embodiment;
FIG. 6 is a circuit diagram of RS422 communication circuitry in one embodiment;
FIG. 7 is a circuit diagram of a third chip in the RS232 communication circuit in one embodiment;
FIG. 8 is a circuit diagram of a fourth chip in the RS232 communication circuit in one embodiment;
FIG. 9 is a circuit diagram of a conversion circuit in one embodiment;
fig. 10 is a circuit diagram of a CAN output circuit in one embodiment.
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 of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The application provides a signal conversion circuit, which is applied to an underwater robot and used for converting underwater environment data of the underwater robot, and fig. 1 is a circuit diagram of the signal conversion circuit in one embodiment. Referring to fig. 1, includes: the device comprises a signal input circuit 10, a conversion circuit 20 and a CAN output circuit 30, wherein the input end of the signal input circuit 10 is connected with a plurality of sensors with different communication protocols, and the output end of the signal input circuit is connected with the conversion circuit 20, and is used for amplifying or inhibiting environmental data collected by the sensors and then transmitting the environmental data to the conversion circuit 20; the conversion circuit 20 is connected with the CAN output circuit 30, and is configured to convert the received environmental data into a digital signal required by CAN communication, and transmit the digital signal to the CAN output circuit 30; the CAN output circuit 30 is connected with a main control chip of the underwater robot and used for transmitting the digital signals to the main control chip of the underwater robot. The sensor with various different communication protocols collects environmental data of the environment where the underwater robot is located, the signal input circuit transmits the environmental data to the conversion circuit, the conversion circuit converts the received environmental data into digital signals required by CAN communication, and the digital signals are uniformly output to a main control chip of the underwater robot through a CAN output circuit. After the environment data are uniformly output through the CAN output circuit, the circuit structure is simplified, the cost is reduced, and later maintenance and maintenance are facilitated.
In one embodiment, the signal input circuit 10 includes: a voltage signal input circuit 101, a current signal input circuit 102, a switch signal input circuit 103, an RS485 communication circuit 104, an RS422 communication circuit 105, and an RS232 communication circuit 106; the input end of the voltage signal input circuit 101 is connected to a first sensor that outputs a voltage signal, and the output end of the voltage signal input circuit is connected to the conversion circuit 20, so as to transmit the voltage signal to the conversion circuit 20; the input end of the current signal input circuit 102 is connected to a second sensor that outputs a current signal, and the output end is connected to the conversion circuit 20, so as to transmit the current signal to the conversion circuit 20; the input end of the switching signal input circuit 103 is connected to a third sensor that outputs a switching signal, and the output end is connected to the conversion circuit 20, so as to transmit the switching signal to the conversion circuit 20; the input end of the RS485 communication circuit 104 is connected to a fourth sensor having an RS485 communication protocol, and the output end is connected to the conversion circuit 20, and is configured to transmit a first differential signal output by the fourth sensor to the conversion circuit 20; the input end of the RS422 communication circuit 105 is connected to a fifth sensor having an RS422 communication protocol, and the output end of the RS422 communication circuit is connected to the conversion circuit 20, so as to transmit a second differential signal output by the fifth sensor to the conversion circuit 20; the input end of the RS232 communication circuit 106 is connected to a sixth sensor with RS232 communication protocol, and the output end is connected to the conversion circuit 20, so as to transmit the level signal output by the sixth sensor to the conversion circuit 20; the first differential signal, the second differential signal and the level signal correspond to a heading angle, a pitching angle and a roll angle; the voltage signal, the current signal, the switching signal, the heading angle, the pitch angle and the roll angle are the environment data.
In one embodiment, as shown in fig. 2, the voltage signal input circuit 101 includes: a first bi-directional transient suppression diode D26 and a first resistor R27; wherein one end of the first bi-directional transient suppression diode D26 is connected to one end of the first resistor R27 and the first sensor, and the other end is grounded; the other end of the first resistor R27 is connected to the input terminal of the conversion circuit 20.
In one embodiment, as shown in fig. 3, the current signal input circuit 102 includes: the circuit comprises a first chip U17, a second resistor R31, a third capacitor C48 and a fuse F1; the positive input end IN + and the negative input end IN-of the first chip U17 are respectively connected with two ends of the second resistor R31; the grounding end GND of the first chip U17 is grounded; the power supply end V + of the first chip U17 is connected with an external power supply; two ends of the third capacitor C48 are respectively connected with a ground terminal GND and a power supply terminal V + of the first chip U17; the output end of the first chip U17 is connected with the signal input end of the conversion circuit 20; one end of the fuse F1 is connected with the positive input end IN + of the first chip U17; the other end of the fuse F1 and the negative input end IN-of the first chip U17 are both connected with the second sensor.
In one embodiment, as shown in fig. 4, the switching signal input circuit 103 includes: a first optocoupler U13 and a first diode LED 5; wherein an emitter of the first optical coupler U13 is grounded; a collector of the first optical coupler U13 is connected with a cathode of the first diode LED5 and a signal input end of the conversion circuit 20; the anode of the first diode LED5 is connected to an external power supply; and the negative electrode and the positive electrode of the first optocoupler U13 are connected with the third sensor.
In one embodiment, as shown in fig. 5, the RS485 communication circuit 104 includes: a second chip U10, a second bidirectional transient suppressor diode D30, a second diode D27, and a fourth capacitor C20; wherein, the first communication input terminal RXD of the second chip U10 is connected with the communication output terminal of the conversion circuit 20; the first communication output TXD of the second chip U10 is connected with a communication input of the conversion circuit 20; the power supply terminal VCC of the second chip U10 is connected with an external power supply, and the ground terminal GND of the second chip U10 is grounded; the cathode of the second diode D27 is connected with the power supply terminal VCC of the second chip U10; the anode of the second diode D27 is connected to the ground GND of the second chip U10; the fourth capacitor C20 is connected in parallel with the second diode D27; two ends of the second bidirectional transient suppression diode D30 are respectively connected with the first 485 pin A and the second 485 pin B of the second chip U10; and a first 485 pin A and a second 485 pin B of the second chip U10 are connected with a fourth sensor for collecting temperature and humidity.
In one embodiment, as shown in fig. 7 and 8, the RS232 communication circuit 106 includes: a third chip U4 and a fourth chip U6; as shown in fig. 9, the conversion circuit 20 includes: a fifth chip U1; the first communication input VID of the third chip U4 is connected with the first communication output R1OUT of the fourth chip U6, and the first communication output VOB of the third chip U4 is connected with the first communication input R1OUT T1IN of the fourth chip U6; the second communication input VOD of the third chip U4 is connected with the first communication output PC11 of the fifth chip U1; the second communication output end VIB of the third chip U4 is connected to the first communication input end PC10 of the fifth chip U1; the first power supply end VDD1 of the third chip U4 is connected with an external power supply, and the first ground end GND1 of the third chip U4 is grounded; the second power supply terminal VDD2 of the third chip U4 is connected to an external power supply, and the second ground terminal GND2 of the third chip U4 is grounded; the second communication input terminal R1IN and the second communication output terminal T1OUT of the fourth chip U6 are connected to the sixth sensor.
In one embodiment, as shown in fig. 7, the RS232 communication circuit 106 further includes: a fifth capacitor C21, a sixth capacitor C22, a seventh capacitor C23, and an eighth capacitor C22; two ends of the fifth capacitor C21 are respectively connected to the first power supply terminal VDD1 and the first ground terminal GND1 of the third chip U4; the sixth capacitor C22 is connected in parallel with the fifth capacitor C21; two ends of the seventh capacitor C23 are respectively connected to the second power supply terminal VDD2 and the second ground terminal GND2 of the third chip U4; the eighth capacitor C22 is connected in parallel with the seventh capacitor C23.
In one embodiment, as shown in fig. 6, the RS422 communication circuit 105 includes: a sixth chip U8, a third bi-directional transient suppression diode D20, a fourth bi-directional transient suppression diode D21, a third resistor R19, and a fourth resistor R20; the receiver non-inverting input end A, the receiver inverting input end B, the driver non-inverting output end Y and the driver inverting input end Z of the sixth chip U8 are connected with the fifth sensor; a receiver non-inverting input end A and a receiver inverting input end B of the sixth chip U8 are connected with two ends of the third bidirectional transient suppression diode D20; a driver non-inverting output terminal Y and a driver inverting input terminal Z of the sixth chip U8 are connected to two ends of the fourth bidirectional transient suppression diode D21; the third resistor R19 and the third bidirectional transient suppression diode D20 are connected in parallel; the fourth resistor R20 and the fourth bi-directional transient suppression diode D21 are connected in parallel.
In one embodiment, as shown in fig. 10, the CAN output circuit 30 includes: a seventh chip U12, a ninth capacitor C43, a tenth capacitor C44, a fifth bi-directional transient suppression diode D19 and a sixth bi-directional transient suppression diode D18; the first communication input terminal RXD and the first communication output terminal TXD of the seventh chip U12 are connected with the communication input terminal and the communication output terminal of the conversion circuit 20; a high-level output terminal CANH and a ground terminal GND2 of the seventh chip U12 are connected to both ends of the fifth bidirectional transient suppression diode D19, respectively, and a low-level output terminal CANL and a ground terminal GND2 of the seventh chip U12 are connected to both ends of the sixth bidirectional transient suppression diode D18, respectively; the ninth capacitor C43 is connected in parallel with the sixth bidirectional transient suppression diode D18; the tenth capacitor C44 is connected in parallel with the fifth bi-directional transient suppression diode D19.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (10)
1. A signal conversion circuit applied to an underwater robot is characterized by comprising:
the input end of the signal input circuit is connected with a plurality of sensors with different communication protocols, and the output end of the signal input circuit is connected with the conversion circuit and is used for amplifying or inhibiting the environmental data collected by the sensors and then transmitting the environmental data to the conversion circuit;
the conversion circuit is connected with the CAN output circuit and used for converting the received environmental data into digital signals required by CAN communication and transmitting the digital signals to the CAN output circuit;
and the CAN output circuit is connected with a main control chip of the underwater robot and is used for transmitting the digital signal to the main control chip of the underwater robot.
2. The signal conversion circuit according to claim 1, wherein the signal input circuit comprises:
the input end of the voltage signal input circuit is connected with a first sensor for outputting a voltage signal, and the output end of the voltage signal input circuit is connected with the conversion circuit and used for transmitting the voltage signal to the conversion circuit;
the input end of the current signal input circuit is connected with the second sensor for outputting a current signal, and the output end of the current signal input circuit is connected with the conversion circuit and used for transmitting the current signal to the conversion circuit;
the input end of the switching signal input circuit is connected with a third sensor for outputting a switching signal, and the output end of the switching signal input circuit is connected with the conversion circuit and used for transmitting the switching signal to the conversion circuit;
the input end of the RS485 communication circuit is connected with a fourth sensor with an RS485 communication protocol, and the output end of the RS485 communication circuit is connected with the conversion circuit and used for transmitting a first differential signal output by the fourth sensor to the conversion circuit;
the input end of the RS422 communication circuit is connected with a fifth sensor with an RS422 communication protocol, and the output end of the RS422 communication circuit is connected with the conversion circuit and is used for transmitting a second differential signal output by the fifth sensor to the conversion circuit;
and the input end of the RS232 communication circuit is connected with a sixth sensor with an RS232 communication protocol, and the output end of the RS232 communication circuit is connected with the conversion circuit and is used for transmitting the level signal output by the sixth sensor to the conversion circuit.
3. The signal conversion circuit of claim 2, wherein the voltage signal input circuit comprises: a first bidirectional transient suppressor diode and a first resistor;
one end of the first bidirectional transient suppression diode is connected with one end of the first resistor and the first sensor, and the other end of the first bidirectional transient suppression diode is grounded; the other end of the first resistor is connected with the input end of the conversion circuit.
4. The signal conversion circuit according to claim 2, wherein the current signal input circuit comprises: the circuit comprises a first chip, a second resistor, a third capacitor and a fuse;
the positive input end and the negative input end of the first chip are respectively connected with two ends of the second resistor; the grounding end of the first chip is grounded; the power supply end of the first chip is connected with an external power supply; two ends of the third capacitor are respectively connected with the grounding end and the power supply end of the first chip; the output end of the first chip is connected with the signal input end of the conversion circuit; one end of the fuse is connected with the positive input end of the first chip; the other end of the fuse and the negative electrode input end of the first chip are connected with the second sensor.
5. The signal conversion circuit of claim 2, wherein the switching signal input circuit comprises: a first optocoupler and a first diode;
the emitter of the first optical coupler is grounded; the collector of the first optocoupler is connected with the cathode of the first diode and the signal input end of the conversion circuit; the anode of the first diode is connected with an external power supply; and the negative electrode and the positive electrode of the first optocoupler are connected with the third sensor for collection.
6. The signal conversion circuit of claim 2, wherein the RS485 communication circuit comprises: the second chip, the second bidirectional transient suppression diode, the second diode and the fourth capacitor;
the first communication input end of the second chip is connected with the communication output end of the conversion circuit; the first communication output end of the second chip is connected with the communication input end of the conversion circuit; the power supply end of the second chip is connected with an external power supply, and the grounding end of the second chip is grounded; the cathode of the second diode is connected with the power supply end of the second chip; the anode of the second diode is connected with the grounding end of the second chip; the fourth capacitor is connected with the second diode in parallel; two ends of the second bidirectional transient suppression diode are respectively connected with the first 485 pin and the second 485 pin of the second chip; and the first 485 pin and the second 485 pin of the second chip are connected with the fourth sensor.
7. The signal conversion circuit of claim 2, wherein the RS232 communication circuit comprises: a third chip and a fourth chip; the conversion circuit includes: a fifth chip;
the first communication input end of the third chip is connected with the first communication output end of the fourth chip, and the first communication output end of the third chip is connected with the first communication input end of the fourth chip; the second communication input end of the third chip is connected with the first communication output end of the fifth chip; the second communication output end of the third chip is connected with the first communication input end of the fifth chip; the first power supply end of the third chip is connected with an external power supply, and the first grounding end of the third chip is grounded; a second power supply end of the third chip is connected with an external power supply, and a second grounding end of the third chip is grounded; and a second communication input end and a second communication output end of the fourth chip are connected with the sixth sensor.
8. The signal conversion circuit of claim 7, wherein the RS232 communication circuit further comprises: a fifth capacitor, a sixth capacitor, a seventh capacitor and an eighth capacitor;
two ends of the fifth capacitor are respectively connected with the first power supply end and the first grounding end of the third chip; the sixth capacitor is connected with the fifth capacitor in parallel; two ends of the seventh capacitor are respectively connected with the second power supply end and the second grounding end of the third chip; the eighth capacitor is connected in parallel with the seventh capacitor.
9. The signal conversion circuit of claim 2, wherein the RS422 communication circuit comprises: the third chip, the third bidirectional transient suppression diode, the fourth bidirectional transient suppression diode, the third resistor and the fourth resistor are connected in series;
a receiver in-phase input end, a receiver reverse-phase input end, a driver in-phase output end and a driver reverse-phase input end of the sixth chip are connected with the fifth sensor; a receiver non-inverting input end and a receiver inverting input end of the sixth chip are connected with two ends of the third bidirectional transient suppression diode; a driver in-phase output end and a driver reverse-phase input end of the sixth chip are connected with two ends of the fourth bidirectional transient suppression diode; the third resistor and the third bidirectional transient suppression diode are connected in parallel; the fourth resistor and the fourth bidirectional transient suppression diode are connected in parallel.
10. The signal conversion circuit of claim 1, wherein the CAN output circuit comprises: a seventh chip, a ninth capacitor, a tenth capacitor, a fifth bidirectional transient suppression diode, and a sixth bidirectional transient suppression diode;
a first communication input end and a first communication output end of the seventh chip are connected with a communication input end and a communication output end of the conversion circuit; a high-level output end and a ground end of the seventh chip are respectively connected with two ends of the fifth bidirectional instantaneous suppressor diode, and a low-level output end and a ground end of the seventh chip are respectively connected with two ends of the sixth bidirectional instantaneous suppressor diode; the ninth capacitor is connected in parallel with the sixth bidirectional transient suppression diode; the tenth capacitor is connected in parallel with the fifth bidirectional transient suppression diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221746253.XU CN217159912U (en) | 2022-07-08 | 2022-07-08 | Signal conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221746253.XU CN217159912U (en) | 2022-07-08 | 2022-07-08 | Signal conversion circuit |
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| Publication Number | Publication Date |
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| CN217159912U true CN217159912U (en) | 2022-08-09 |
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| CN202221746253.XU Active CN217159912U (en) | 2022-07-08 | 2022-07-08 | Signal conversion circuit |
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- 2022-07-08 CN CN202221746253.XU patent/CN217159912U/en active Active
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