CN211015073U - CAN bus interface equipment - Google Patents
CAN bus interface equipment Download PDFInfo
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- CN211015073U CN211015073U CN201922436313.2U CN201922436313U CN211015073U CN 211015073 U CN211015073 U CN 211015073U CN 201922436313 U CN201922436313 U CN 201922436313U CN 211015073 U CN211015073 U CN 211015073U
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- 230000003993 interaction Effects 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000004088 simulation Methods 0.000 abstract description 10
- 230000008054 signal transmission Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 26
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model relates to a CAN bus interface equipment, this CAN bus interface equipment includes: the system comprises a processor module, a USB interface module and a CAN bus interface module, wherein the USB interface module and the CAN bus interface module are electrically connected with the processor module; wherein the processor module is suitable for being connected with an upper computer through a USB interface module; the processor module is also suitable for being connected with a CAN bus through a CAN bus interface module, namely, information interaction between the upper computer and the CAN bus is realized; the utility model discloses a processor module connects host computer and CAN bus interface module connection CAN bus as the transfer station through USB interface module respectively, CAN present CAN bus message and signal at the host computer, perhaps through the host computer with required message, on signal transmission to the CAN bus, perhaps simulate whole network environment when network node develops, carry out virtual simulation, semi-physical simulation, physical simulation.
Description
Technical Field
The utility model relates to a CAN bus transmission field especially relates to a CAN bus interface equipment.
Background
The CAN bus is used as a novel field bus technology, is mainly applied to the fields of automobiles, industrial control and the like, and CAN present CAN bus messages and signals in PC (personal computer) software for the convenience of development and debugging of a CAN bus system, or send required messages and signals to the CAN bus through an upper computer, or simulate the whole network environment during network node development to perform virtual simulation, semi-physical simulation and physical simulation.
Therefore, it is necessary to develop a new CAN bus interface device to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a CAN bus interface equipment to solve the problem of how to realize the information interaction between host computer and the CAN bus.
In order to solve the technical problem, the utility model provides a CAN bus interface equipment, it includes: the system comprises a processor module, a USB interface module and a CAN bus interface module, wherein the USB interface module and the CAN bus interface module are electrically connected with the processor module; wherein the processor module is suitable for being connected with an upper computer through a USB interface module; and the processor module is also suitable for being connected with a CAN bus through a CAN bus interface module, namely, the information interaction between the upper computer and the CAN bus is realized.
Further, the USB interface module is suitable for data transmission with the processor module through a high-speed USB data transmission chip.
Further, the CAN bus interface module includes: the CAN transceiver is electrically connected with the digital isolator; the CAN transceiver is suitable for being connected with a CAN bus; the CAN transceiver is suitable for information interaction with a CAN bus and performs data transmission with the processor module through the digital isolator.
Further, the CAN bus interface module further includes: the switch circuit is electrically connected with the CAN transceiver; the switch circuit is suitable for controlling whether the CAN bus terminal resistor is connected or not.
Further, the switching circuit includes: the MOS tube is electrically connected with the processor module, and the relay is electrically connected with the CAN transceiver; the processor module is suitable for driving the relay to act by controlling the MOS tube so as to control the connection or disconnection of the CAN bus with the terminal resistor.
Further, the CAN bus interface device further includes: an electrostatic protection circuit; the electrostatic protection circuit is suitable for eliminating static electricity through the electrostatic protection tube.
Further, the CAN bus interface device further includes: a power supply module; the power module is suitable for supplying power.
The beneficial effects of the utility model are that, the utility model discloses a processor module connects host computer and CAN bus interface module connection CAN bus as the transfer station respectively through USB interface module, CAN present CAN bus message and signal at the host computer, perhaps through the host computer with required message, on signal transmission to the CAN bus, perhaps simulate whole network environment when network node develops, carry out virtual simulation, semi-physical simulation, physical simulation.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic block diagram of a CAN bus interface device of the present invention;
fig. 2-1 is a circuit diagram of a first portion of a processor module of the present invention;
2-2 are circuit diagrams of a second portion of the processor module of the present invention;
2-3 are circuit diagrams of a third portion of the processor module of the present invention;
2-4 are circuit diagrams of a fourth portion of the processor module of the present invention;
2-5 are circuit diagrams of a fifth portion of the processor module of the present invention;
fig. 3 is a circuit diagram of the high-speed USB data transmission chip of the present invention;
fig. 4-1 is a circuit diagram of the digital isolator of the present invention;
fig. 4-2 is a circuit diagram of the CAN transceiver of the present invention;
fig. 4-3 are circuit diagrams of a first portion of the switching circuit of the present invention;
fig. 4-4 are circuit diagrams of a second portion of the switching circuit of the present invention;
fig. 5 is a circuit diagram of an electrostatic protection circuit of the present invention;
fig. 6 is a circuit diagram of the power module of the present invention.
In the figure: the high-speed USB data transmission device comprises a high-speed USB data transmission chip U2, a digital isolator U3, a CAN transceiver U4, a MOS tube U5, an electrostatic protection tube U6 and a power supply module U7.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
Example 1
FIG. 1 is a schematic block diagram of a CAN bus interface device of the present invention;
fig. 2-1 is a circuit diagram of a first portion of a processor module of the present invention;
2-2 are circuit diagrams of a second portion of the processor module of the present invention;
2-3 are circuit diagrams of a third portion of the processor module of the present invention;
2-4 are circuit diagrams of a fourth portion of the processor module of the present invention;
fig. 2-5 are circuit diagrams of a fifth portion of the processor module of the present invention.
In the present embodiment, as shown in fig. 1, fig. 2-2, fig. 2-3, fig. 2-4, and fig. 2-5, the present embodiment provides a CAN bus interface apparatus, including: the system comprises a processor module, a USB interface module and a CAN bus interface module, wherein the USB interface module and the CAN bus interface module are electrically connected with the processor module; wherein the processor module is suitable for being connected with an upper computer through a USB interface module; and the processor module is also suitable for being connected with a CAN bus through a CAN bus interface module, namely, the information interaction between the upper computer and the CAN bus is realized.
In the present embodiment, the processor module may employ, but is not limited to, STM32F407VET 6.
In this embodiment, the upper computer may adopt, but is not limited to, including: industrial personal computer, PC, on-vehicle ECU system.
In this embodiment, the processor module serves as a transfer station, and is connected with the upper computer and the CAN bus interface module through the USB interface module, respectively, so that CAN present CAN bus messages and signals to the upper computer, or send required messages and signals to the CAN bus through the upper computer, or simulate the whole network environment during network node development to perform virtual simulation, semi-physical simulation, and physical simulation.
Fig. 3 is a circuit diagram of the high-speed USB data transmission chip of the present invention.
In this embodiment, as an alternative implementation, as shown in fig. 3, the USB interface module is adapted to perform data transmission with the processor module through a high-speed USB data transmission chip U2, so as to implement high-speed data transmission.
In this embodiment, the high-speed USB data transmission chip U2 can be, but is not limited to, a USB3300 high-speed USB data transmission chip.
Fig. 4-1 is a circuit diagram of the digital isolator of the present invention;
fig. 4-2 is a circuit diagram of the CAN transceiver of the present invention.
In this embodiment, as an optional implementation manner, as shown in fig. 4-1 and 4-2, the CAN bus interface module includes: the CAN transceiver U4 is electrically connected with the digital isolator U3 and the digital isolator U3; the CAN transceiver U4 is suitable for being connected with a CAN bus; the CAN transceiver U4 is suitable for information interaction with a CAN bus and data transmission with the processor module through the digital isolator U3.
In this embodiment, signal interference can be avoided by using the digital isolator U3, and the integrity of data transmission is improved.
In the present embodiment, the digital isolator U3 can be, but is not limited to, an ADUM1201 digital isolator.
In the present embodiment, the CAN transceiver U4 may be, but is not limited to, a TJA1050 type CAN transceiver.
Fig. 4-3 are circuit diagrams of a first portion of the switching circuit of the present invention;
fig. 4-4 are circuit diagrams of a second portion of the switching circuit of the present invention.
In this embodiment, as an optional implementation manner, as shown in fig. 4-3 and 4-4, the CAN bus interface module further includes: the switch circuit is electrically connected with the CAN transceiver U4; the switch circuit is suitable for controlling whether the CAN bus terminal resistor is connected or not.
In this embodiment, as an optional implementation manner, the switch circuit includes: a MOS transistor U5 electrically connected to the processor module, a relay (in this embodiment, but not limited to, a HFD4 type relay) electrically connected to the CAN transceiver U4; the processor module is suitable for driving the relay to act by controlling the MOS tube U5 so as to control the connection or disconnection of the CAN bus with the terminal resistor.
In this embodiment, the CANH terminal and the CAN L terminal of the switch circuit are connected to the CAN transceiver U4 and the P1 terminal is connected to the CAN bus, the CANH terminal and the CAN L terminal, and the relay 5, 6 and 7 pins are suspended, that is, the CANH terminal and the CAN L terminal are controlled to be connected to the 120 ohm terminating resistor when the relay is turned on, and the CANH terminal and the CAN L terminal are not connected to the 120 ohm terminating resistor when the relay is turned off.
Fig. 5 is a circuit diagram of an electrostatic protection circuit according to the present invention.
In this embodiment, as an optional implementation manner, as shown in fig. 5, the CAN bus interface device further includes: an electrostatic protection circuit; the electrostatic protection circuit is suitable for eliminating static electricity through an electrostatic protection tube U6.
In the present embodiment, the electrostatic protection tube U6 may be, but is not limited to, a PESD1CAN type electrostatic protection tube.
Fig. 6 is a circuit diagram of the power module of the present invention.
In this embodiment, as an optional implementation manner, as shown in fig. 6, the CAN bus interface device further includes: a power supply module U7; the power module U7 is adapted to supply power.
In the present embodiment, the power module U7 can be, but is not limited to, an F0505S-1W power module.
To sum up, the utility model discloses a processor module connects host computer and CAN bus interface module connection CAN bus as the transfer station through USB interface module respectively, CAN present CAN bus message and signal at the host computer, perhaps through the host computer with required message, on signal transmission to the CAN bus, perhaps simulate whole network environment when network node develops, carry out virtual simulation, semi-physical simulation, physical simulation.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. A CAN bus interface device, comprising:
the system comprises a processor module, a USB interface module and a CAN bus interface module, wherein the USB interface module and the CAN bus interface module are electrically connected with the processor module; wherein
The processor module is suitable for being connected with an upper computer through a USB interface module; and
the processor module is further adapted to connect to a CAN bus via a CAN bus interface module, i.e.
And information interaction between the upper computer and the CAN bus is realized.
2. The CAN-bus interface device of claim 1,
the USB interface module is suitable for data transmission with the processor module through a high-speed USB data transmission chip.
3. The CAN-bus interface device of claim 1,
the CAN bus interface module comprises: the CAN transceiver is electrically connected with the digital isolator;
the CAN transceiver is suitable for being connected with a CAN bus;
the CAN transceiver is suitable for information interaction with a CAN bus and performs data transmission with the processor module through the digital isolator.
4. The CAN-bus interface device of claim 3,
the CAN bus interface module further comprises: the switch circuit is electrically connected with the CAN transceiver;
the switch circuit is suitable for controlling whether the CAN bus terminal resistor is connected or not.
5. The CAN-bus interface device of claim 4,
the switching circuit includes: the MOS tube is electrically connected with the processor module, and the relay is electrically connected with the CAN transceiver;
the processor module is suitable for driving the relay to act by controlling the MOS tube so as to control the connection or disconnection of the CAN bus with the terminal resistor.
6. The CAN-bus interface device of claim 1,
the CAN bus interface device further includes: an electrostatic protection circuit;
the electrostatic protection circuit is suitable for eliminating static electricity through the electrostatic protection tube.
7. The CAN-bus interface device of claim 1,
the CAN bus interface device further includes: a power supply module;
the power module is suitable for supplying power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922436313.2U CN211015073U (en) | 2019-12-30 | 2019-12-30 | CAN bus interface equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922436313.2U CN211015073U (en) | 2019-12-30 | 2019-12-30 | CAN bus interface equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211015073U true CN211015073U (en) | 2020-07-14 |
Family
ID=71476143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922436313.2U Active CN211015073U (en) | 2019-12-30 | 2019-12-30 | CAN bus interface equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211015073U (en) |
-
2019
- 2019-12-30 CN CN201922436313.2U patent/CN211015073U/en active Active
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