CN209305511U

CN209305511U - A kind of automobile-used decoder

Info

Publication number: CN209305511U
Application number: CN201821933755.7U
Authority: CN
Inventors: 刘磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-22
Filing date: 2018-11-22
Publication date: 2019-08-27
Anticipated expiration: 2028-11-22

Abstract

A kind of automobile-used decoder provided by the utility model, including single-chip microcontroller, bus transceiver, control circuit and power module, it is characterized in that car body main equipment issues signal in CAN or Lin bus, it is the input signal of automobile-used decoder after bus broadcast, the identifiable signal of single-chip microcontroller is converted to by bus transceiver, to make the MCU driving control circuit and then control output, the requirement for issuing the equipment for being installed at former vehicle outside and former vehicle from equipment sync response designated master device, as outer installation LED spotlight can start and close with former vehicle distance light, only with former stopping switch operation.

Description

A kind of automobile-used decoder

Technical field

The utility model belongs to automobile-used technical field, is related to a kind of automobile or motorcycle based on CAN or Lin bus protocol Control system.

Background technique

Increasing with vehicle on the market, requirement of the automobile friend to traffic safety is also improving, and many vehicles are all additional LED lamp floor light is installed additional, but additional LED light is usually all that switch by additionally installing additional and controller are bright to operate It goes out, if needed during driving motorcycle de- handle to go by additional switch, and automobile is also required to find additional switch and goes to grasp Make, this has certain risk when driving, and easy accidents happened due to misoperation.

Utility model content

A kind of automobile-used decoder provided by the utility model, can be installed in CAN the or Lin bus of former vehicle, use original Stopping switch can operate the electrical appliance installed additional outside, and such as outer installation LED shot-light can start and close with former vehicle distance light, It is only used with former stopping switch operation, or the reserved switch order position that former stopping switch has been not used, such as BMW motor For idler wheel in vehicle left handle when not installing navigation, idler wheel is idle, and such switch can be used, for operating other electricity consumptions Device or shot-light, but the operation of such switch is all hung in CAN the or Lin bus of former vehicle, and the electrical appliance of outer installation must install vehicle additional It just can be with former stopping switch sync response and work with decoder.

A kind of automobile-used decoder, including single-chip microcontroller (200), bus transceiver (300), control circuit (400) and power supply mould Block (100), it is characterised in that car body main equipment issues signal in CAN or Lin bus, is automobile-used decoding after bus broadcast The input signal of device is converted to the identifiable signal of single-chip microcontroller by bus transceiver, so that the MCU driving be made to control Circuit controls output in turn, requires with former vehicle from equipment sync response main equipment.Such as open former Che Yuanguang, the LED spotlight of installation Also it can only be operated with former stopping switch with the starting of former vehicle distance light or closing, or be reserved what former stopping switch had been not used Switch order position is used, and if the idler wheel in BMW motorcycle left handle is not when installing navigation, idler wheel is idle, such switch Can be used, for operating other electrical appliances or shot-light, but the operation of such switch all hang over former vehicle CAN or Lin it is total On line, the electrical appliance of exterior must install additional automobile-used decoder just can with former stopping switch sync response and work, with former Che Congshe Standby synchronous working.

The automobile-used decoder, it is characterised in that the automobile-used decoder be installed in CAN or Lin bus from Equipment, the automobile-used decoder only respond the signal that designated master device issues in CAN or Lin bus, and non-designated main equipment issues Signal will be differentiated by the frame ID of signal after be ignored, the single-chip microcontroller is by drawing high or dragging down signal drive control circuit (400).Such as the frame signal in Lin bus: 00 55B1 0F, 12 13 14 B7, wherein B1 is the ID of frame signal thus, except several Outside a specified ID, other signals can all be ignored, such as the frame signal in CAN bus: 00 0e 30 03 00 00 04 of 66cc F7 06 04 00 00 00 00 00 46, wherein 000004f7 i.e. this be frame signal frame ID, in addition to several specified ID, He can be ignored at signal.

The automobile-used decoder, it is characterised in that control circuit is the drivable N-MOS of single-chip microcontroller (401) and then drives Dynamic P-MOS (402) (Fig. 2) or MCU driving optocoupler (403) isolation route (Fig. 3), or similar driving circuit scheme, monolithic The driving capability of machine itself is limited, needs to go the output of switch high current using the second pole, or only former stopping switch exists The switching signal of external circuit low and high level is supplied to after switching signal decoding in CAN or Lin bus.Make output In open and close or PWM state；The PWM state can be 0~1MHZ frequency, single-chip microcontroller (200) drive control circuit it is defeated Outlet is single channel or multichannel.

The automobile-used decoder, it is characterised in that the input terminal VBAT of the power module (100) be vehicle body battery just Cathode voltage on pole or car body route can be completed with lossless switching power taking plug or directly plug-in bottle is positive, the power supply mould Block is single-chip microcontroller (200), bus transceiver (300) and control circuit (400) power supply, institute's voltage supplied are not quite similar (Fig. 4), such as single Piece machine is 3.3V or 5V, and when bus transceiver is CAN bus, the voltage as required for TJA1050 is 5V, bus transceiver Lin When bus, when such as TJA1021 required for voltage be 3.3V and 12V.And driving circuit is 3.3V, 5V or 12V.

The automobile-used decoder, it is characterised in that the input signal cable of the bus transceiver is Lin scheme (301) When there was only an input signal cable (311), by taking TJA1021 as an example, this signal wire can be passed through lossless patchplug or its other party Formula is connected in parallel in Lin bus, has serial capacitance between the Lin signal wire and ground, be when being CAN scheme (302) CAN_H and Two signal line of CAN_L (312).

The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle Within the scope of shield.

Detailed description of the invention

Fig. 1 is automobile-used decoder circuit schematic diagram.

Fig. 2 is electric operation control circuit figure one.

Fig. 3 is electric operation control circuit figure two.

Fig. 4 is power module circuitry figure.

Fig. 5 is Lin bus transceiver.

Fig. 6 is CAN bus transceiver.

Specific embodiment

The technical issues of in order to solve the utility model, technical solution and advantage are more clearly understood, below in conjunction with attached Figure and specific embodiment, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein Only to explain the utility model, it is not used to limit the utility model.

1, shown in as shown in Figure 1, Figure 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of automobile-used decoder, including single-chip microcontroller 200, bus are received Send out device 300, control circuit 400 and power module 100, it is characterised in that car body main equipment issues letter in CAN or Lin bus Number, it is the input signal of automobile-used decoder after bus broadcast, is converted to the identifiable signal of single-chip microcontroller by bus transceiver, To make the MCU driving control circuit and then control output, required with former vehicle from equipment sync response main equipment.As beaten Kaiyuan vehicle distance light, the LED spotlight of installation also can start or close with former vehicle distance light, only use former stopping switch operation, or The reserved switch order position that former stopping switch has been not used is used, as the idler wheel in BMW motorcycle left handle is not being installed When navigation, idler wheel is idle, and such switch can be used, for operating other electrical appliances or shot-light, but the behaviour of such switch It all hangs in CAN the or Lin bus of former vehicle, the electrical appliance of exterior must install automobile-used decoder additional just can be same with former stopping switch Step response and work, it is synchronous from equipment with former vehicle.

2, shown in as shown in Figure 1, Figure 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the automobile-used decoder, it is characterised in that described automobile-used Decoder is the slave equipment being installed in CAN or Lin bus, is equipped with CAN or Lin in the single-chip microcontroller 200 of the automobile-used decoder The decoding program of bus signals, only responds the signal that designated master device issues in CAN or Lin bus, and non-designated main equipment issues Signal will be differentiated by the frame ID of signal after be ignored, the single-chip microcontroller is by drawing high or dragging down signal drive control circuit 400.Such as the frame signal in Lin bus: 00 55 B1 0F, 12 13 14 B7, wherein B1 is the ID of frame signal thus, except several Outside a specified ID, other signals can all be ignored, such as the frame signal in CAN bus: 66 cc, 00 0e 30 03 00 00 04 f7 06 04 00 00 00 00 00 46, wherein 000004f7 i.e. this be frame signal frame ID, except several specified ID Outside, other signals can all be ignored.

3, as shown in Figure 1, Figure 2, Figure 3 and Figure 4, the automobile-used decoder, it is characterised in that control circuit is single-chip microcontroller Route, or similar driving circuit is isolated in drivable N-MOS 401 and then driving P-MOS 402 or MCU driving optocoupler 403 The driving capability of scheme, single-chip microcontroller itself is limited, needs to go the output of switch high current using the second pole, or only by former vehicle Switch the switching signal that external circuit low and high level is supplied to after the switching signal decoding in CAN or Lin bus.Make defeated Outlet is in open and close or PWM state；The PWM state can be the frequency of 0~1MHZ, 200 drive control circuit of single-chip microcontroller Output end be single channel or multichannel.

4, shown in as shown in Figure 1, Figure 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the automobile-used decoder, it is characterised in that the power supply The input terminal VBAT of module 100 is the cathode voltage on vehicle body battery anode or car body route, can use lossless switching power taking plug It completes or directly plug-in bottle anode, the power module is that single-chip microcontroller 200, bus transceiver 300 and control circuit 400 are powered, Institute's voltage supplied is not quite similar, if single-chip microcontroller is 3.3V or 5V, when bus transceiver is CAN bus, and the voltage as required for TJA1050 For 5V, when bus transceiver is Lin bus, when such as TJA1021 required for voltage be 3.3V and 12V.And driving circuit be 3.3V, 5V or 12V.

5, shown in as shown in Figure 1, Figure 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the automobile-used decoder, it is characterised in that the bus The input signal cable of transceiver only has an input signal cable 311, by taking TJA1021O as an example, can believe this when being Lin scheme 301 Number line is connected in parallel in Lin bus by lossless patchplug or other modes, concatenates electricity between the Lin signal wire and ground Hold, is CAN_H when being CAN scheme 302 and two signal line 312 of CAN_L.

Claims

1. a kind of automobile-used decoder, including single-chip microcontroller (200), bus transceiver (300), control circuit (400) and power module (100), it is characterised in that car body main equipment issues signal in CAN or Lin bus, is automobile-used decoder after bus broadcast Input signal is converted to the identifiable signal of single-chip microcontroller by bus transceiver, to make the MCU driving control circuit And then output is controlled, it is required with former vehicle from equipment sync response main equipment.

2. automobile-used decoder according to claim 1, which is characterized in that the automobile-used decoder is to be installed at CAN or Lin Slave equipment in bus, the automobile-used decoder only responds the signal that designated master device issues in CAN or Lin bus, non-designated The signal that main equipment issues is ignored after being differentiated by the frame ID of signal, and the single-chip microcontroller is by drawing high or dragging down signal drive Dynamic control circuit (400).

3. automobile-used decoder according to claim 1, which is characterized in that the control circuit is the drivable N- of single-chip microcontroller Route, or similar driving circuit scheme is isolated in MOS (401) and then driving P-MOS (402) or MCU driving optocoupler (403), makes Output is in open and close or PWM state；The PWM state can be the frequency of 0~1MHZ, single-chip microcontroller (200) drive control The output end of circuit is single channel or multichannel.

4. automobile-used decoder according to claim 1, which is characterized in that the input terminal VBAT of the power module (100) For the cathode voltage on vehicle body battery anode or car body route, the power module is single-chip microcontroller (200), bus transceiver (300) it is not quite similar with control circuit (400) power supply, institute's voltage supplied.

5. automobile-used decoder according to claim 1, it is characterised in that: the input signal cable of the bus transceiver is There was only an input signal cable (311) when Lin scheme (301), have serial capacitance between the Lin signal wire and ground, is the side CAN It is CAN_H and two signal line of CAN_L (312) when case (302).