CN201610104U - Automobile steering lamp control circuit - Google Patents
Automobile steering lamp control circuit Download PDFInfo
- Publication number
- CN201610104U CN201610104U CN2009202984368U CN200920298436U CN201610104U CN 201610104 U CN201610104 U CN 201610104U CN 2009202984368 U CN2009202984368 U CN 2009202984368U CN 200920298436 U CN200920298436 U CN 200920298436U CN 201610104 U CN201610104 U CN 201610104U
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- China
- Prior art keywords
- relay
- power supply
- steering lamp
- control circuit
- power chip
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- Expired - Fee Related
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Abstract
The utility model discloses an automobile steering lamp control circuit which comprises an MCU and a relay, wherein the MCU is connected with the relay; and the relay is connected with the power supply of steering lamps; and the automobile steering lamp control circuit also comprises an intelligent power chip, and the terminal of the intelligent power chip is respectively connected with the MCU and a contact of the relay; the MCU is connected with the coil of the relay; the coil and the contact of the relay are respectively connected with the power supply of the steering lamps; and the right steering lamp and the left steering lamp are respectively connected with a driving circuit of the intelligent power chip. The automobile steering lamp control circuit combines the driving mode of the relay with the driving mode of the intelligent power chip, solves the problem caused by the traditional single driving mode, has higher safety and reliability, reduces the requirement on the relay, and realizes reverse connection protection of the power supply and meets the sounding requirement by power supply of the relay control power supply.
Description
Technical field
The utility model relates to a kind of flasher, especially relates to a kind of motor turning lamp control circuit.
Background technology
Motor turning lamp control circuit commonly used at present is generally relay type of drive and smart power chip type of drive, but all there are some shortcomings in this dual mode.The relay type of drive is very big because of flasher loads on relay closes moment impact electric current, make relay contact connect moment generation electro spark, the relay contact lost of life, the steering indicating light control relay of present automotive use, the contact of using has all been passed through special processing and has been improved contact endurance, so increased productive costs, the life-span of the relay contact of process special processing simultaneously is also very limited.
And the smart power chip type of drive is because of using the switching of electronic switch control steering indicating light, do not produce electro spark, the relay contact life-span is longer, but smart power chip internal drive metal-oxide-semiconductor in-to-in diode meeting forward conduction when the power supply reversal connection, make all left and right steering indicating lights simultaneously bright, about about 9A, consume the power of about 9W this moment to electric current on smart power chip drives, smart power chip is burnt because of overheated greatly.In addition, when adopting the smart power chip type of drive, when steering indicating light is opened, can not sound, not satisfy the sounding requirement of conventional steering lamp.
The utility model content
The purpose of this utility model provides a kind of motor turning lamp control circuit; relay type of drive and smart power chip type of drive are combined; overcome the problem that traditional single drive mode brings; have higher safety and reliability; reduced requirement, realized power supply reverse connecting protection and sounding requirement by the power source for relay control power supply to relay.
To achieve these goals, the utility model is by the following technical solutions:
A kind of motor turning lamp control circuit, comprise MCU and relay, MCU is connected with relay, relay is connected with the steering indicating light power supply, wherein, also includes smart power chip, the terminals of smart power chip link to each other with MCU and relay contact respectively, MCU links to each other with the coil of relay, and the coil of relay and contact all are connected on the steering indicating light power supply, and right steering lamp and left steering lamp are connected with driving circuit on the smart power chip respectively.
Further, described smart power chip is BTS5020.
Further, described relay 871-1A-D M25.
The beneficial effects of the utility model are:
1, traditional type of drive is because the steering indicating light load current is bigger, and rush current is bigger, needs to consider the current capacity that bears of relay, and the utility model has reduced the requirement to relay by make the particular processing mode on software.Be specially, shifting to an earlier date 10-20ms when opening steering indicating light opens relay, postpone the 10-20ms closed relay when closing steering indicating light, when relay contact closure is with disconnection like this, obstructed excess current on the contact can not produce electro spark, can reduce the type selecting standard of relay far away, needn't use the steering indicating light special purpose relay, provide cost savings;
2, the utility model adopts smart power chip to drive steering indicating light, can gather load current separately, and the protection when overload or short circuit appear in control load has excess temperature, over-voltage protecting function simultaneously;
3, the steering indicating light power supply is controlled by relay, and this relay not only can be controlled the break-make of steering indicating light power supply, and can also satisfy the requirement of conventional steering lamp " patter patter " sounding when steering indicating light is opened.
4, the required relay of the utility model is chosen the commonality height, can use the contact not pass through the relay of special processing, needn't use the steering indicating light special purpose relay, the realization of commercialization preferably.
Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can from practice of the present utility model, obtain instruction to investigating hereinafter.Target of the present utility model and other advantages can realize and obtain by specifically noted structure in following specification sheets or the accompanying drawing.
Description of drawings
Fig. 1 is a functional block diagram of the present utility model;
Fig. 2 is schematic circuit diagram of the present utility model;
The specific embodiment
Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment:
As shown in Figure 1 and Figure 2, motor turning lamp control circuit 1 of the present utility model comprises MCU2, relay 3 and smart power chip 4, MCU2 is connected with relay 3, smart power chip 4 respectively, relay 3 connects the steering indicating light power supply, and the driving circuit in the smart power chip 4 is connected with left steering lamp and right steering lamp respectively; MCU2 control right steering light switch K1, left steering light switch K2 and danger warning K switch 3 are controlled the steering indicating light power supply, and smart power chip 4 couples of MCU2 provide current feedback.
The right steering lamp comprises preceding right steering lamp L4, back right steering lamp L5 and right turn indicator lamp L6, the equal ground connection of an end of preceding right steering lamp L4, back right steering lamp L5 and right turn indicator lamp L6; The left steering lamp comprises preceding left steering lamp L1, back left steering lamp L2 and left turn indicator lamp L3, the equal ground connection of an end of preceding left steering lamp L1, back left steering lamp L2 and left turn indicator lamp L3.
In the present embodiment, smart power chip 4 is selected BTS5020 for use, and relay 3 is selected 871-1A-DM25 for use, and MCU2 is the AW32 control chip.
Comprise right steering lamp drive circuit and left steering lamp drive circuit in the smart power chip 4, these two driving circuits are connected with right steering lamp and left steering lamp respectively, control the output of left and right steering indicating light; The steering indicating light power supply is by relay 3 controls, MCU2 is when detecting right steering K switch 1, left steering K switch 2 or danger warning K switch 3 and open or close, control the right-hand rotation lamp respectively or the left-hand rotation lamp drive circuit is opened and closed, the closed and disconnected of while control relay 3 is with the control of common realization to left and right steering indicating light.
The right steering lamp drive circuit and the left steering lamp drive circuit of smart power chip 4 are connected respectively on the relay contact, and the steering indicating light power supply is given left and right steering indicating light power supply through relay 3.The control system that smart power chip 4 combines with relay 3 when the reversal connection of steering indicating light power supply, provides protection when promptly turning to power supply one end ground connection, is unlikely to make smart power chip 4 to burn because of overheated.
Working process of the present utility model is: MCU2 is when detecting right steering K switch 1, left steering K switch 2 or danger warning K switch 3 and open, control the right steering lamp respectively or the left steering lamp drive circuit is open-minded, shift to an earlier date the closure of 10-20ms control relay 3 simultaneously, when MCU2 disconnects by smart power chip 4 control right steering lamps or left steering lamp drive circuit, relay 3 time-delay 10-20ms turn-off, with the control of the left and right steering indicating light of common realization.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, other modifications that those of ordinary skills make the technical solution of the utility model or be equal to replacement, only otherwise break away from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of the claim scope of the present utility model.
Claims (3)
1. motor turning lamp control circuit, comprise MCU and relay, MCU is connected with relay, relay is connected with the steering indicating light power supply, it is characterized in that: also include smart power chip, the terminals of smart power chip link to each other with MCU and relay contact respectively, and MCU links to each other with the coil of relay, the coil of relay and contact all are connected on the steering indicating light power supply, and right steering lamp and left steering lamp are connected with driving circuit on the smart power chip respectively.
2. motor turning lamp control circuit according to claim 1 is characterized in that: described smart power chip is BTS5020.
3. motor turning lamp control circuit according to claim 1 and 2 is characterized in that: described relay is 871-1A-D M25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202984368U CN201610104U (en) | 2009-12-31 | 2009-12-31 | Automobile steering lamp control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202984368U CN201610104U (en) | 2009-12-31 | 2009-12-31 | Automobile steering lamp control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201610104U true CN201610104U (en) | 2010-10-20 |
Family
ID=42960737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202984368U Expired - Fee Related CN201610104U (en) | 2009-12-31 | 2009-12-31 | Automobile steering lamp control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201610104U (en) |
-
2009
- 2009-12-31 CN CN2009202984368U patent/CN201610104U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101020 Termination date: 20131231 |