CN108280982A - A kind of portable car-mounted data wireless transmission circuit - Google Patents
A kind of portable car-mounted data wireless transmission circuit Download PDFInfo
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- CN108280982A CN108280982A CN201711197623.2A CN201711197623A CN108280982A CN 108280982 A CN108280982 A CN 108280982A CN 201711197623 A CN201711197623 A CN 201711197623A CN 108280982 A CN108280982 A CN 108280982A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Computer Networks & Wireless Communication (AREA)
- Selective Calling Equipment (AREA)
Abstract
The present invention provides a kind of portable car-mounted data wireless transmission circuits；Including governor circuit, WiFi communication circuit, CAN communication circuit, the present invention solves the problems, such as the CAN cable networks of engineering machinery or agricultural machinery to the data conversion of WIFI wireless networks, coordinate mobile phone or the APP at tablet computer end, it can make to realize interconnection between mobile phone or tablet computer and finished vehicle electronic equipment, on the one hand directly it can be carried out state with mobile phone or tablet computer reading vehicle floor data and be checked and analyzed, on the other hand the data such as parameter, software upgrading can be also sent in corresponding electronic equipment by mobile phone or tablet computer and realize that parameter or program update.In addition, since this equipment is extremely small and exquisite, and use and be wirelessly connected, it is not only easy to carry, and operating personnel can complete data upload or download in the case where keeping certain distance with machinery, i.e., convenient and safety.
Description
Technical field
The present invention relates to field of data transmission more particularly to a kind of portable car-mounted data wireless transmission circuits.
Background technology
Engineering machinery, agricultural machinery are typically equipped with the electronics such as engine controller, entire car controller and display instrument and set
Standby, between these electronic equipments is attached by CAN bus, to realize data exchange.When need from these
Data are read in equipment and carry out diagnostic analysis or into these equipment when write-in data, then can be connect by diagnosis reserved in advance
Mouthful, dedicated diagnostic device is connected to computer to realize.Such diagnostic mode has some limitations：On the one hand,
Due to using wired connection, the dynamic industrial and mineral data for obtaining machinery are more difficult, and on the other hand, engineering machinery, agricultural machinery are general
It all works in the wild, technical staff, which overhauls machinery, need to carry diagnostic device, computer etc., bring inconvenience to technical staff.
Invention content
In order to solve the above technical problems, the present invention provides a kind of portable car-mounted data wireless transmission circuit, pass through by
CAN network is connected with WIFI module, and the data of engineering machinery is enable remotely to send and receive.
The present invention is achieved by the following technical programs.
A kind of portable car-mounted data wireless transmission circuit provided by the invention；Including governor circuit, WIFI communication electricity
Road, CAN communication circuit, the governor circuit include main control chip, and the main control chip MCU carries CAN interface and UART
Serial ports is simultaneously connected with CAN communication circuit with WIFI communication circuit by CAN interface with UART serial ports, WIFI communication respectively
Circuit is also associated with RS485 interface circuits.
The CAN interface includes the FA11 pin and FA12 pins of main control chip MCU.
The UART serial ports includes the FA9 pin and FA10 pins of main control chip MCU.
Power end VDD/1, power end VDDA, power end VDD/2, power end VDD/ are provided on the main control chip MCU
3, cold end VSS/1, cold end VSSA, cold end VSS/2, cold end VSS/3, the power end VDD/1, electricity
Source VDDA, power end VDD/2, power end VDD/3 respectively connection+3V power supplys VCC and pass through the electricity of two different capabilities
It is connect with ground terminal GND after holding parallel connection, the cold end VSS/1, cold end VSSA, cold end VSS/2, low potential
End VSS/3 is connect with ground terminal GND, electric with+3V respectively after the resetting pin NRST connection resistance R8 of the control chip MCU
Source VCC is connected with ground terminal GND, and the PD0 feet of the control chip MCU connect oscillating circuit with PD1 feet.
The CAN communication circuit includes high potential outlet line CANH and low spot position outlet line road CANL, and high potential is defeated
Go out circuit CANH and low spot position outlet line road CANL is connected on 3 feet and 2 feet of common mode inductance U3, the common mode electricity
Feel 1 foot of U3 and 4 feet are separately connected fusible link F1 and fusible link F2, fusible link F1 and fusible link F2 are connected to CAN transmitting-receivings
6 foot of 7 foot of high potential and low spot position of device, 7 foot of high potential of the CAN transceiver pass through transient diode TVS1 and capacitance
It is connect with ground terminal GND after C11 parallel connections, 6 foot of low potential of the CAN transceiver passes through transient diode TVS2 and capacitance C13
It is connect with ground terminal GND after parallel connection, the power end of the CAN transceiver is connect with+3V power supplys, and the power end of CAN transceiver is also
It is connect jointly with ground terminal GND with its grounding leg after connection capacitance C12, the transmitting terminal and receiving terminal point of the CAN transceiver
It is not connect with the FA12 pins of main control chip MCU and FA11 pins.
The WIFI communication circuit includes transmitting terminal TDX0 and the reception of WIFI driving chips U2, WIFI driving chip U2
End RXD0 is connect with the FA10 feet of main control chip and FA9 feet respectively, the RST pins and EN pins of the WIFI driving chips U2
Connect respectively with the PB13 pins of main control chip MCU and PB12 pins, the RST pins of the WIFI driving chips U2 also with+3V
The power end of power supply VCC connections, the WIFI driving chips U2 is connect with+3V power supplys, the GPIO15 of WIFI driving chips U2
Ground terminal GND is accessed jointly with the grounding pin of WIFI driving chips U2 after pin connection resistance R4.
The main control chip MCU is STM32F103C6T6 microcontrollers.
The CAN transceiver model SN65HVD232.
The WIFI driving chips are ESP8266-12F chips.
The beneficial effects of the present invention are：The CAN cable networks for solving engineering machinery or agricultural machinery are wireless to WIFI
The data conversion problem of network coordinates mobile phone or the APP at tablet computer end, can make mobile phone or tablet computer and finished vehicle electronic
Interconnection is realized between equipment, on the one hand can directly with mobile phone or tablet computer read vehicle floor data carries out state check with
On the other hand the data such as parameter, software upgrading also can be sent to corresponding electronics by mobile phone or tablet computer and set by analysis
Standby middle realization parameter or program update.In addition, since this equipment is extremely small and exquisite, and use and be wirelessly connected, it is not only easy to carry,
And operating personnel can complete data in the case where keeping certain distance with machinery and upload or download, i.e., convenient and safety.
Description of the drawings
Fig. 1 is the connection diagram of the present invention；
Fig. 2 is the governor circuit connection diagram of the present invention；
Fig. 3 is the CAN communication circuit connection diagram of the present invention；
Fig. 4 is the WIFI communication circuit connection diagram of the present invention；
Fig. 5 is the RS485 interface circuit connection diagrams of the present invention.
Specific implementation mode
Be described further below technical scheme of the present invention, but claimed range be not limited to it is described.
A kind of portable car-mounted data wireless transmission circuit as shown in Figures 1 to 5；Including governor circuit, WIFI communication
Circuit, CAN communication circuit, the governor circuit include main control chip, the main control chip MCU carry CAN interface and
UART serial ports is simultaneously connected with CAN communication circuit with WIFI communication circuit by CAN interface with UART serial ports, WIFI respectively
Communicating circuit is also associated with RS485 interface circuits.
The CAN interface includes the FA11 pin and FA12 pins of main control chip MCU.
The UART serial ports includes the FA9 pin and FA10 pins of main control chip MCU.
Power end VDD/1, power end VDDA, power end VDD/2, power end VDD/ are provided on the main control chip MCU
3, cold end VSS/1, cold end VSSA, cold end VSS/2, cold end VSS/3, the power end VDD/1, electricity
Source VDDA, power end VDD/2, power end VDD/3 respectively connection+3V power supplys VCC and pass through the electricity of two different capabilities
It is connect with ground terminal GND after holding parallel connection, the cold end VSS/1, cold end VSSA, cold end VSS/2, low potential
End VSS/3 is connect with ground terminal GND, electric with+3V respectively after the resetting pin NRST connection resistance R8 of the control chip MCU
Source VCC is connected with ground terminal GND, and the PD0 feet of the control chip MCU connect oscillating circuit with PD1 feet.
The CAN communication circuit includes high potential outlet line CANH and low spot position outlet line road CANL, and high potential is defeated
Go out circuit CANH and low spot position outlet line road CANL is connected on 3 feet and 2 feet of common mode inductance U3, the common mode electricity
Feel 1 foot of U3 and 4 feet are separately connected fusible link F1 and fusible link F2, fusible link F1 and fusible link F2 are connected to CAN transmitting-receivings
6 foot of 7 foot of high potential and low spot position of device, 7 foot of high potential of the CAN transceiver pass through transient diode TVS1 and capacitance C11
Connect with ground terminal GND after parallel connection, 6 foot of low potential of the CAN transceiver by transient diode TVS2 and capacitance C13 simultaneously
It is connect with ground terminal GND after connection, the power end of the CAN transceiver is connect with+3V power supplys, and the power end of CAN transceiver also connects
It is connect jointly with ground terminal GND with its grounding leg after meeting capacitance C12, transmitting terminal and the receiving terminal difference of the CAN transceiver
It is connect with the FA12 pins of main control chip MCU and FA11 pins.
The WIFI communication circuit includes transmitting terminal TDX0 and the reception of WIFI driving chips U2, WIFI driving chip U2
End RXD0 is connect with the FA10 feet of main control chip and FA9 feet respectively, the RST pins and EN pins of the WIFI driving chips U2
Connect respectively with the PB13 pins of main control chip MCU and PB12 pins, the RST pins of the WIFI driving chips U2 also with+3V
The power end of power supply VCC connections, the WIFI driving chips U2 is connect with+3V power supplys, the GPIO15 of WIFI driving chips U2
Ground terminal GND is accessed jointly with the grounding pin of WIFI driving chips U2 after pin connection resistance R4.
The main control chip MCU is STM32F103C6T6 microcontrollers.
The CAN transceiver model SN65HVD232.
The WIFI driving chips are ESP8266-12F chips.
The setting of the RS485 interface circuits can greatly facilitate debugging, the mode selection pin of RS485 interface circuits
The GPIO pin for accessing to WIFI driving chips carries out code rewriting so as to be based on RS485 interfaces to WIFI driving chips,
And debugging and code rewriting are carried out to main control chip MCU by WIFI driving chips.
CAN bus interface is formed by the MCU CAN physical layer interfaces carried and CAN transceiver chip, it can be total from CAN
Data, or the transmission data into CAN bus network are read in gauze network；On the other hand, turn WIFI module using one piece of serial ports,
The communication function of MCU and WIFI module are realized using the UART serial port functions of MCU.When the present apparatus works, WIFI modules will
AP modules are operated in, when the special APP in mobile phone or tablet is opened, this AP will be connected automatically to, can be started after successful connection
Exchange data.When needing that data are written into the CAN bus network of target machinery by mobile phone or tablet, mobile phone or tablet
Be sent to the present apparatus after being packaged data by WIFI, the present apparatus receives data packet is unlocked after WIFI data after by CAN numbers
Data are sent in sequence to by CAN interface in CAN bus network according to frame format；When needs are read from CAN bus network
When taking the data such as operating mode, mobile phone is sent to by WIFI after the CAN data read are packaged by certain format or is put down
Plate.
Claims (9)
1. a kind of portable car-mounted data wireless transmission circuit, it is characterised in that：Including governor circuit, WIFI communication circuit, CAN
Communicating circuit, the governor circuit include main control chip, and the main control chip MCU carries CAN interface and UART serial ports simultaneously
It is connected respectively with CAN communication circuit with WIFI communication circuit with UART serial ports by CAN interface, WIFI communication circuit also connects
It is connected to RS485 interface circuits.
2. portable car-mounted data wireless transmission circuit as described in claim 1, it is characterised in that：The CAN interface
FA11 pins including main control chip MCU and FA12 pins.
3. portable car-mounted data wireless transmission circuit as described in claim 1, it is characterised in that：The UART serial ports includes
The FA9 pins and FA10 pins of main control chip MCU.
4. portable car-mounted data wireless transmission circuit as described in claim 1, it is characterised in that：The main control chip MCU
On be provided with power end VDD/1, power end VDDA, power end VDD/2, power end VDD/3, cold end VSS/1, cold end
VSSA, cold end VSS/2, cold end VSS/3, the power end VDD/1, power end VDDA, power end VDD/2, power supply
Hold VDD/3 respectively connection+3V power supplys VCC and by being connect with ground terminal GND after the capacitance parallel connection of two different capabilities, institute
It states cold end VSS/1, cold end VSSA, cold end VSS/2, cold end VSS/3 to connect with ground terminal GND, institute
It is connect respectively with+3V power supplys VCC and ground terminal GND after stating the resetting pin NRST connection resistance R8 of control chip MCU, the control
The PD0 feet of chip MCU connect oscillating circuit with PD1 feet.
5. portable car-mounted data wireless transmission circuit as described in claim 1, it is characterised in that：The CAN communication circuit
Including high potential outlet line CANH and low spot position outlet line road CANL, high potential outlet line CANH and low spot position output line
Road road CANL is connected on 3 feet and 2 feet of common mode inductance U3, and 1 foot and 4 feet of the common mode inductance U3 are separately connected fusing
Silk F1 and fusible link F2, fusible link F1 and fusible link F2 are connected to 6 foot of 7 foot of high potential and low spot position of CAN transceiver, institute
7 foot of high potential of CAN transceiver is stated by being connect with ground terminal GND after transient diode TVS1 and capacitance C11 parallel connections, it is described
6 foot of low potential of CAN transceiver after transient diode TVS2 and capacitance C13 parallel connections with ground terminal GND by connecting, the CAN
The power end of transceiver is connect with+3V power supplys, the power end of CAN transceiver be also connected with after capacitance C12 with its grounding leg jointly with
Ground terminal GND connections, the transmitting terminal and receiving terminal of the CAN transceiver respectively with the FA12 pins and FA11 of main control chip MCU
Pin connects.
6. portable car-mounted data wireless transmission circuit as described in claim 1, it is characterised in that：The WIFI communication circuit
Transmitting terminal TDX0 and receiving terminal RXD0 including WIFI driving chips U2, WIFI driving chip U2 respectively with the FA10 of main control chip
Foot is connected with FA9 feet, the RST pins and EN pins of the WIFI driving chips U2 respectively with the PB13 pins of main control chip MCU
It is connected with PB12 pins, the RST pins of the WIFI driving chips U2 are also connect with+3V power supplys VCC, the WIFI driving chips
The power end of U2 is connect with+3V power supplys, after the GPIO15 pins of WIFI driving chips U2 connection resistance R4 with WIFI driving chips
The grounding pin of U2 accesses ground terminal GND jointly.
7. portable car-mounted data wireless transmission circuit as described in claim 1, it is characterised in that：The main control chip MCU
For STM32F103C6T6 microcontrollers.
8. portable car-mounted data wireless transmission circuit as described in claim 1, it is characterised in that：The CAN transceiver type
Number be SN65HVD232.
9. portable car-mounted data wireless transmission circuit as described in claim 1, it is characterised in that：The WIFI driving chips
For ESP8266-12F chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711197623.2A CN108280982A (en) | 2017-11-25 | 2017-11-25 | A kind of portable car-mounted data wireless transmission circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711197623.2A CN108280982A (en) | 2017-11-25 | 2017-11-25 | A kind of portable car-mounted data wireless transmission circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108280982A true CN108280982A (en) | 2018-07-13 |
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ID=62801424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711197623.2A Pending CN108280982A (en) | 2017-11-25 | 2017-11-25 | A kind of portable car-mounted data wireless transmission circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN108280982A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110722572A (en) * | 2019-11-15 | 2020-01-24 | 北京云迹科技有限公司 | Data switching device of control system and robot |
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| CN204679851U (en) * | 2015-04-21 | 2015-09-30 | 杭州轩平电子科技有限公司 | A kind of embedded type automobile remote failure monitoring device |
| CN205427606U (en) * | 2015-12-15 | 2016-08-03 | 合肥晟泰克汽车电子有限公司 | Vehicle OBD diagnostic data collection system |
| CN206573885U (en) * | 2016-12-25 | 2017-10-20 | 广东交通职业技术学院 | A kind of vehicle diagnosis instrument circuit |
| CN206585765U (en) * | 2016-11-18 | 2017-10-24 | 杭州智磁传感器有限公司 | A kind of multinode networking type data wireless transmission circuit |
-
2017
- 2017-11-25 CN CN201711197623.2A patent/CN108280982A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203909780U (en) * | 2014-05-07 | 2014-10-29 | 浙江万向亿能动力电池有限公司 | Vehicle remote upgrading device |
| CN204679851U (en) * | 2015-04-21 | 2015-09-30 | 杭州轩平电子科技有限公司 | A kind of embedded type automobile remote failure monitoring device |
| CN205427606U (en) * | 2015-12-15 | 2016-08-03 | 合肥晟泰克汽车电子有限公司 | Vehicle OBD diagnostic data collection system |
| CN206585765U (en) * | 2016-11-18 | 2017-10-24 | 杭州智磁传感器有限公司 | A kind of multinode networking type data wireless transmission circuit |
| CN206573885U (en) * | 2016-12-25 | 2017-10-20 | 广东交通职业技术学院 | A kind of vehicle diagnosis instrument circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110722572A (en) * | 2019-11-15 | 2020-01-24 | 北京云迹科技有限公司 | Data switching device of control system and robot |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180713 |
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| RJ01 | Rejection of invention patent application after publication |