CN213042121U

CN213042121U - CAN bus switch panel

Info

Publication number: CN213042121U
Application number: CN202021768620.7U
Authority: CN
Inventors: 尚恩惠; 霍鹏鹏; 王真; 詹春磊; 汪飞; 娄言龙
Original assignee: Zhengzhou Senpeng Electronic Technology Co Ltd
Current assignee: Zhengzhou Senpeng Electronic Technology Co Ltd
Priority date: 2020-08-22
Filing date: 2020-08-22
Publication date: 2021-04-23
Anticipated expiration: 2030-08-22

Abstract

The utility model belongs to the technical field of the whole car control switch of car, concretely relates to CAN bus switch panel, left side switch panel and right side switch panel all include shell and the circuit board of shell inside, the circuit board includes power management module, MCU module, awakens and awakens detection module, CAN communication module, switch module, dazzles various atmosphere lamp module and external pencil interface; the circuit board of the left switch panel further comprises a double-flashing-lamp switch effective output module, and the double-flashing-lamp switch effective output module is connected with a control output port of the MCU module of the left switch panel. The utility model arranges a plurality of switches on the switch panel in a centralized way, which has less wiring, convenient installation and operation and simple and beautiful overall switch layout; in addition, a switch backlight, a switch state indicator lamp and a colorful atmosphere lamp are designed in a personalized mode, and the grade and the style of the vehicle are improved better.

Description

CAN bus switch panel

Technical Field

The utility model belongs to the technical field of the whole car control switch of car, concretely relates to CAN bus switch panel.

Background

The whole vehicle instrument desk is a control center for controlling the whole vehicle by a driver. The vehicle control system comprises an instrument panel, a steering wheel, a central control screen and the like, and all information related to vehicle control and state is seen in a glance in front of a driver. Various devices such as a carriage light, a driver light, a front door, a rear door, a driver window, a ventilation fan and the like are installed in the vehicle, and the various devices need to be opened and closed through a switch. As a driver of a vehicle, various device controls are required for the vehicle. In the traditional vehicle, a plurality of rocker switches and other types of different switches are arranged on a driver console, and parts of unimportant switches are hidden in a central control screen.

With the development of the times, the design requirements of people on friendly intelligent interaction, personalized customization and integration are higher and higher. In the information age, the intelligent products are spread over the air to fill the lives of people, and people are well accustomed to the quality of the lives of intelligent lives. For example, our smart phones are products of the intelligent era, and people do not like the rocker switch of the ancient board as what intelligent products are needed by vehicles. The rocker switch of the ancient plate of the user has less diversified colors, for example, the user likes to set the mobile phone with diversified theme styles such as different styles of desktop backgrounds and various ringtones. It is also a concern for many engineers whether the cab can be promoted with more highly personalized themes and settings.

In the production process of vehicles, a lot of wiring harnesses are needed to walk behind a warped plate switch type driver operating platform, and people cannot be clearly distinguished by dense, numb and numb. How many sets of wires are to be run for how many switches. Integrating these harnesses is also a good solution to be able to replace the currently cumbersome wiring process with a set of reliable and simple ways.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides a CAN bus switch panel, a plurality of switches are arranged on the switch panel in a centralized way, the wiring is less, the installation and the operation are convenient, and the overall switch layout is simple and beautiful; in addition, a switch backlight, a switch state indicator lamp and a colorful atmosphere lamp are designed in a personalized mode, and the grade and the style of the vehicle are improved better.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model discloses a CAN bus switch panel, divide into left side switch panel and right side switch panel, left side switch panel cascades with right side switch panel, left side switch panel connects whole car pencil; the left switch panel and the right switch panel respectively comprise a shell and a circuit board inside the shell, and the circuit board comprises a power management module, an MCU module, a wake-up and wake-up detection module, a CAN communication module, a switch module, a colorful atmosphere lamp module and an external wiring harness interface; the switch module is connected with a control input port of the MCU module, the power management module is connected with an output end of the awakening and awakening detection module, the awakening and awakening detection module and the CAN communication module are respectively in bidirectional communication connection with the MCU module, and the colorful atmosphere lamp module is connected with a control output port of the MCU module; the circuit board of the left switch panel further comprises a double-flashing-lamp switch effective output module, and the double-flashing-lamp switch effective output module is connected with a control output port of the MCU module of the left switch panel.

Further, the power management module adopts an LMR16020PDDAR power supply chip and an AMS1117 chip, the LMR16020PDDAR power supply chip is used for converting 9-32V power supplies of the automobile into 7.5V power supplies, and the AMS1117 chip is used for converting the 7.5V power supplies into 5V standard power supplies; the LMR16020PDDAR power chip is provided with a wake-up enabling port and is connected with a wake-up and wake-up detection module.

Further, the MCU module adopts an automobile-level chip S9S08DZ60 for data processing and control output.

Furthermore, the awakening and awakening detection module of the left switch panel and the right switch panel comprises an ON signal awakening detection circuit for detecting an ON signal taken from the whole vehicle, and awakening the power management module when the power is at a high level.

Furthermore, the detection module is awakened and awakened to the left side switch panel circuit board and also comprises a double-flash-lamp switch signal awakening detection circuit used for detecting double-flash-lamp switch signals of a double-flash-lamp switch on the left side switch panel, and when the signals are effective, the power management module is awakened.

Furthermore, the effective output module of the double-flashing-lamp switch is externally connected with the whole vehicle instrument and used for awakening the instrument when the signal of the double-flashing-lamp switch is effective.

Further, the CAN communication module adopts a TCAN1042HD main control chip and is responsible for communication with the whole vehicle, and the output end of the CAN communication module is connected with CAN _ H and CAN _ L communication ports of an external wiring harness interface.

Furthermore, the switch module adopts a 74HC595 chip, the input mode is a column scanning type input, and the left and right switch panels are respectively provided with 18 switches.

Further, dazzle various atmosphere lamp module and adopt TLC6C5724 main control chip for the atmosphere effect of show multiple color mode.

Furthermore, the circuit board also comprises a switch backlight module and a switch state indicating module which are connected with the control output port of the MCU module; the switch backlight module comprises a plurality of switch backlight LED lamps adopting a 7.5V power supply and is used for lighting and closing the switch backlight; the switch state indicating module adopts a 74HC595 chip and is used for indicating the state of each switch.

Compared with the prior art, the utility model has the advantages of it is following:

1. the circuit part of the utility model comprises a power management module, an MCU module, a wake-up and wake-up detection module, a CAN communication module, a switch module, a colorful atmosphere lamp module, a double-flashing lamp switch effective output module, an external wiring harness interface, a switch backlight module and a switch state indication module; the power management module supplies power to all circuit devices, the MCU module is the master control core of the switch panel circuit, awaken up and awaken up the detection module and control the power management module, the CAN communication module carries out two-way communication with the MCU module, the data communication with the whole vehicle is used, the switch module is the input of the MCU module, dazzle various atmosphere lamp module and be controlled by the MCU module, show the atmosphere effect of multiple color modes, the effective output module of the double flashing lamp switch is controlled by the MCU module, the pivot instrument is connected with the whole vehicle instrument and awakens up, the external wiring harness interface is connected with the whole vehicle, the switch backlight module is controlled by the MCU module, light up at night, the switch state indication module is controlled by the MCU module, and the state of each switch is indicated. The utility model has the advantages of circuit structure is simple, novel in design, low in manufacturing cost can assist the driver to carry out intelligent control to the vehicle.

2. When being in the parking state, when ON shelves are in invalid state simultaneously, press two flashing light switches, when two flashing light switches are effective, can awaken up whole car instrument through two flashing light switch effective output module, ensure that the instrument also can normally show when ON shelves signal is invalid.

3. The utility model discloses dazzle various atmosphere lamp in CAN bus switch panel back setting, the atmosphere lamp CAN send the astigmatism uniformly, that has certain luminance when driving a vehicle night, makes by soft halo cage around the switch panel, CAN promote the grade and the style of vehicle better.

4. Each switch key of the utility model is provided with two switch backlight lamps which are respectively positioned at two sides of the switch key, so that the switch key and the icons on the keys can be clearly seen under dark light, and a driver can conveniently find the switch key which needs to be operated; the switch state indicator light is distributed above each switch key and used for indicating the current switch state.

5. The utility model discloses concentrate a plurality of switches and arrange ON flush mounting plate of switch, panel disconnect-type about adopting, the appearance is succinct pleasing to the eye, uses the CAN bus to replace numerous switches back dense numb pencil, adopts CAN bus form, and except power cord, ground wire, the ON signal awakens up three lines of line, only 3 signal lines to whole car, 6 total, the wiring is few, and the fault point that exists is less, troubleshooting fault point easily.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

Fig. 1 is a schematic diagram of the connection between a CAN bus switch panel and a vehicle system according to an embodiment of the present invention;

fig. 2 is a schematic circuit block diagram of a CAN bus switch panel according to an embodiment of the present invention;

fig. 3 is a circuit diagram of a power management module according to an embodiment of the present invention;

fig. 4 is a circuit diagram of the MCU module of the left switch panel according to the embodiment of the present invention;

fig. 5 is a circuit diagram of the MCU module of the right switch panel according to the embodiment of the present invention;

fig. 6 is a circuit diagram of a wake-up and wake-up detection module of the left switch panel according to the embodiment of the present invention;

fig. 7 is a circuit diagram of a wake-up and wake-up detection module of the right-side switch panel according to an embodiment of the present invention;

fig. 8 is a circuit diagram of a CAN communication module according to an embodiment of the present invention;

fig. 9 is a circuit diagram of an effective output module of a dual flash switch according to an embodiment of the present invention;

fig. 10 is a switch module circuit diagram of a left side switch panel of an embodiment of the present invention;

fig. 11 is a switch module circuit diagram of a right side switch panel of an embodiment of the present invention;

fig. 12 is a circuit diagram of a switching backlight module of a left-side switch panel according to an embodiment of the present invention;

fig. 13 is a circuit diagram of a switch state indicating module of the left switch panel according to the embodiment of the present invention;

fig. 14 is a circuit diagram of a switch status indication module of the right-side switch panel according to an embodiment of the present invention;

fig. 15 is a circuit diagram of one TLC6C5724 main control chip (U3) in the glare atmosphere lamp module according to the embodiment of the present invention;

fig. 16 is a circuit diagram of another TLC6C5724 main control chip (U9) in the glare atmosphere lamp module according to the embodiment of the present invention;

fig. 17 is a circuit diagram of a glare atmosphere lamp in a glare atmosphere lamp module according to an embodiment of the present invention;

fig. 18 is an external harness interface circuit diagram of the left-side switch panel according to the embodiment of the present invention;

fig. 19 is an external harness interface circuit diagram of the right-side switch panel according to the embodiment of the present invention;

fig. 20 is a circuit diagram of a switching backlight module of a right-side switch panel according to an embodiment of the present invention.

The reference numbers in the figures denote:

1. the device comprises a power management module, a MCU module, a 3 awakening and awakening detection module, a 4 CAN communication module, a 5 switch module, a 6 colorful atmosphere lamp module, a 7 external wire harness interface, an 8 double-flashing lamp switch effective output module, a 9 switch backlight module and a 10 switch state indication module.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below 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, but not all embodiments.

As shown in fig. 1 and fig. 2, the CAN bus switch panel of the present embodiment is divided into a left switch panel and a right switch panel, which CAN operate independently, the left switch panel and the right switch panel are cascaded, and the left switch panel is connected to a vehicle harness; the left switch panel and the right switch panel respectively comprise a shell and a circuit board inside the shell, rubber keys are arranged on the shell, and the circuit board comprises a power management module, an MCU module, a wake-up and wake-up detection module, a CAN communication module, a switch module, a colorful atmosphere lamp module, an external wiring harness interface, a switch backlight module and a switch state indication module; the switch module is connected with a control input port of the MCU module, the power management module is connected with an output end of the awakening and awakening detection module, the awakening and awakening detection module and the CAN communication module are respectively in bidirectional communication connection with the MCU module, and the colorful atmosphere lamp module, the switch backlight module and the switch state indication module are respectively connected with a control output port of the MCU module; the circuit board of the left switch panel further comprises a double-flashing-lamp switch effective output module, and the double-flashing-lamp switch effective output module is connected with a control output port of the MCU module of the left switch panel.

As shown in FIG. 3, the power management module adopts an LMR16020PDDAR power supply chip and an AMS1117 chip, the LMR16020PDDAR power supply chip is used for converting 9-32V power supplies of the automobile into 7.5V power supplies, and the AMS1117 chip is used for converting the 7.5V power supplies into 5V standard power supplies. The 7.5V power is used for switching on and off the power supply of LED lamp and dazzling various atmosphere LED lamp in a poor light, and all other circuits all use 5V power supply. The LMR16020PDDAR power chip is provided with a wake-up enabling port and is connected with the wake-up and wake-up detection module to control whether the whole board is powered on or not.

As shown in fig. 4 and 5, the MCU module is the core of software control in the hardware circuit, and is mainly responsible for switching the power lock, scheduling, data processing, and command processing of the CAN communication module, effective signal output control of the dual flash switch, input scanning of the switch module, control of the backlight module, control of the on-off state indicating module, and adjustment of the color mode of the colorful atmosphere light, using the automobile-level chip S9S08DZ 60.

As shown in fig. 7, the wake-up and wake-up detection module of the right switch panel circuit board includes an ON signal wake-up detection circuit, the ON signal is a signal existing ON the external harness interface, the signal is taken from the ON signal of the entire vehicle (which can be matched with the corresponding wake-up signal according to the conditions of the actual vehicle, and does not limit the ON level signal), when the ON signal is valid (high level), the Power management module is woken up, the Power supply system starts to work, and the ON wake-up detection is connected to the ON _ Power pin of the MCU.

As shown in fig. 6, the wake-up and wake-up detection module of the left switch panel circuit board includes two parts, namely an ON signal wake-up detection circuit and a dual flashing light switch signal wake-up detection circuit, which respectively detect an ON signal and a dual flashing light switch signal; for ON signal wake-up, when the ON signal is valid (high level), the power management module is woken up, the power supply system starts to work, and the wake-up port input _ ON is led out and needs to be connected with the ON signal of the whole vehicle. For the wake-up of the double-flashing-light switch signal, the wake-up port input _ double _ flush is connected with the double-flashing-light switch key (SW 7 in fig. 10), when the double-flashing-light switch is pressed down, the wake-up signal is effective, the power supply management module is waken up, the power supply system starts to work, and the double-flashing-light switch is arranged on the left switch panel, so that the wake-up is not carried out on the right switch panel; the ON awakening detection is connected with an ON _ Power pin of the MCU, and the Double-flashing-light switch signal detection is connected with a Double _ Flash pin of the MCU. The two wake-up lines form a multi-path wake-up mechanism, lead out one wake-up line and are connected with a VCC _ CTRL enabling pin of the LMR16020PDDAR power supply chip.

Awakening and awakening the detection module and still including the power Lock, the power Lock regards the effective state of double flashing light switch signal as the judgement condition, MCU passes through MCU _ Pow _ Lock pin control power Lock and locks, locks the back, even awaken the line inefficacy, also can guarantee circuit and system work still.

As shown in fig. 8, the CAN communication module is mainly responsible for communicating with the entire vehicle, and adopts a TCAN1042HD main control chip, and the output end is connected to the CAN _ H and CAN _ L communication ports of the external harness interface. For example, the controller receives a color mode adjusting command and a small lamp signal state of the colorful atmosphere lamp from the CAN bus and also sends all switch states of the switch panel. The CANTX pin of the TCAN1042HD main control chip is correspondingly connected with the CANTX pin of the MCU, and the CANRX pin is correspondingly connected with the CANRX pin of the MCU.

As shown in fig. 9, the dual flashing light switch active output module is only provided on the left switch panel, but not on the right switch panel, and the output signal of this module is used to wake up the meter. When the double-flash-lamp switch is effective, the double-flash-lamp switch may be in a parking state at the moment, and meanwhile, the ON gear may be in an invalid state. The awakening output signal of the module belongs to negative control grounding output, when the double-flash lamp switch is invalid, the pin is in a suspended state, and when the double-flash lamp switch is valid, the pin is in a grounding state. The control end of the module is correspondingly connected with a meter _ signal _ ctrl pin of the MCU, and the output end of the module is connected with a Double _ flash _ awake _ sig port of an external harness interface.

As shown in fig. 10 and 11, the switch module is an input module, a 74HC595 chip with high stability and reliability is used, the circuit adopts a row-column scanning type input module, the 74HC595 chip is used for column control, and the MCU three input ports Key _ Read1, Key _ Read2, and Key _ Read3 (not provided in the switch module of the right switch panel) are used for row control. The switch module of this example, the left and right sides respectively sets up 18 switches, and left side switch panel SW19 is the reservation switch, and the right side switch panel only shows 14 switches in the figure, and 4 switches (door switch) in addition directly link to each other with MCU and constitute 18 switches.

As shown in fig. 12 and 20, when the switching backlight module is applied to a night scene, and the system acquires that a night-related semaphore (for example, a small light signal is acquired) is valid, the MCU controls the power supply of the switching backlight module to turn on the switching backlight. For each switch, two switch backlight lamps are arranged and respectively positioned at two sides of the switch key, surround a transparent area of the key for one circle and illuminate icons on the switch key. The BackLight lamp is switched on and off by adopting a 7.5V power supply and is controlled by a BackLight _ Ctl pin of the MCU.

As shown in fig. 13 and 14, the switch status indication module controls three switch status indication lamps on each switch, and the current status indication mode can be modified according to different requirements. The switch state indication module adopts three 74HC595 chips to cascade, and realizes a scanning type indication mode through the MCU. The current switch is only set to be in an effective state and an ineffective state, the three indicator lamps indicate whether the current switch is effective or not through a synchronous flashing state, and if the current switch is not flashed (including being always on or being always off), the switch is indicated to be ineffective. The switch state indicator lamps are distributed above each switch, wherein 4 vehicle door switches of the right switch panel adopt special switches and do not have switch state indicator lamps.

As shown in fig. 15, 16 and 17, the dazzle color atmosphere lamp is located at the back of the CAN bus switch panel, surrounds the CAN bus switch panel for a circle, and after the CAN bus switch panel is installed, the projection direction of the dazzle color atmosphere lamp is downward. Dazzle various atmosphere lamp module and adopt two TLC6C5724 main control chip cascades, and a RGB adjustable chip communicates with MCU with the serial form, totally 32 RGBLED. Dazzle various atmosphere lamp colour adjustment instruction to CAN bus switch panel input through outside CAN communication module, through MCU's data processing, issue TLC6C5724 main control chip with the instruction, update TLC6C5724 main control chip output state to reach the purpose that various atmosphere lamp was dazzled in dynamic adjustment.

As shown in fig. 1, two switch panels on the left and right sides of the external harness interface have two same plug-in interfaces, which are used for cascading the left and right switch panels, and the left switch panel is connected to the entire harness during cascading, as shown in fig. 18 and 19, the interface pins are defined as follows:

unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this application do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Finally, it is to be noted that: the above description is only the preferred embodiment of the present invention, which is only used to illustrate the technical solution of the present invention, and is not used to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention is included in the protection scope of the present invention.

Claims

1. A CAN bus switch panel is divided into a left switch panel and a right switch panel, wherein the left switch panel and the right switch panel are cascaded, and the left switch panel is connected with a whole vehicle wire harness; the intelligent control system is characterized in that the left switch panel and the right switch panel respectively comprise a shell and a circuit board inside the shell, and the circuit board comprises a power management module, an MCU module, a wake-up and wake-up detection module, a CAN communication module, a switch module, a colorful atmosphere lamp module and an external wiring harness interface; the switch module is connected with a control input port of the MCU module, the power management module is connected with an output end of the awakening and awakening detection module, the awakening and awakening detection module and the CAN communication module are respectively in bidirectional communication connection with the MCU module, and the colorful atmosphere lamp module is connected with a control output port of the MCU module; the circuit board of the left switch panel further comprises a double-flashing-lamp switch effective output module, and the double-flashing-lamp switch effective output module is connected with a control output port of the MCU module of the left switch panel.

2. The CAN bus switch panel of claim 1, wherein the power management module employs an LMR16020PDDAR power chip and an AMS1117 chip, the LMR16020PDDAR power chip being configured to convert a car 9-32V power supply to a 7.5V power supply, the AMS1117 chip being configured to convert a 7.5V power supply to a 5V standard power supply; the LMR16020PDDAR power chip is provided with a wake-up enabling port and is connected with a wake-up and wake-up detection module.

3. The CAN bus switch panel of claim 1, wherein said MCU module employs an automotive grade chip S9S08DZ60 for data processing and control output.

4. The CAN bus switch panel of claim 2, wherein the wake-up and wake-up detection modules of the left and right switch panel circuit boards comprise an ON signal wake-up detection circuit for detecting an ON signal taken from the entire vehicle to wake-up the power management module when high.

5. The CAN bus switch panel of claim 4, wherein the wake-up and wake-up detection module of the left switch panel circuit board further comprises a wake-up detection circuit for detecting a wake-up signal of a dual flashing light switch on the left switch panel, and when the wake-up signal is valid, the wake-up detection circuit wakes up the power management module.

6. The CAN bus switch panel of claim 5, wherein the dual flashing light switch active output module is externally connected to a vehicle instrument for waking up the instrument when the dual flashing light switch signal is active.

7. The CAN bus switch panel of claim 1, wherein the CAN communication module employs a TCAN1042HD master control chip, which is responsible for communicating with the entire vehicle, and the output terminal is connected to CAN _ H and CAN _ L communication ports of the external harness interface.

8. The CAN bus switch panel of claim 1, wherein the switch module is a 74HC595 chip, the input mode is a column-row scanning input, and each of the left and right switch panels has 18 switches.

9. The CAN bus switch panel of claim 1, wherein the glare atmosphere light module employs a TLC6C5724 main control chip for displaying atmosphere effects of multiple color modes.

10. The CAN bus switch panel of claim 2, wherein the circuit board further comprises a switch backlight module and a switch status indication module, both connected to the control output port of the MCU module; the switch backlight module comprises a plurality of switch backlight LED lamps adopting a 7.5V power supply and is used for lighting and closing the switch backlight; the switch state indicating module adopts a 74HC595 chip and is used for indicating the state of each switch.