CN203012406U - Novel door lock motor protective system for commercial vehicles - Google Patents
Novel door lock motor protective system for commercial vehicles Download PDFInfo
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- CN203012406U CN203012406U CN 201220727046 CN201220727046U CN203012406U CN 203012406 U CN203012406 U CN 203012406U CN 201220727046 CN201220727046 CN 201220727046 CN 201220727046 U CN201220727046 U CN 201220727046U CN 203012406 U CN203012406 U CN 203012406U
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- microcontroller
- bts724
- door
- driving chip
- lock motor
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Abstract
The application provides a novel door lock motor protective system for commercial vehicles. The novel door lock motor protective system comprises a microcontroller, a driving chip BTS724 and a relay group, wherein the driving chip BTS724 is connected with the microcontroller through an I/O interface, feeds back a circuit state to the microcontroller through a pin 8, and is controlled by a program in the microcontroller; and the relay group is connected with the microcontroller through the I/O interface and is connected with the driving chip BTS724 respectively, receives a control signal of the microcontroller, and controls a door lock motor to rotate forward and backward. The on-off of the relay group and the driving chip BTS724 is controlled by software algorithms in the microcontroller, so that non-electricity switching of a relay is guaranteed, a relay contact is effectively protected, and a problem of door lock circuit malfunction is solved. In addition, a self diagnosis function of the driving chip BTS724 is used to diagnose faults of open circuit and short circuit of the door lock driving circuit and faults of over-current, over-temperature and the like of the door lock motor, and a function of diagnosing faults of the door lock is realized.
Description
Technical field
The utility model relates to automobile door lock electric motor protecting technical field, in particular, relates to a kind of novel commercial car door-lock motor protection system.
Background technology
Along with the development in epoch, the progress of automotive engineering is also maked rapid progress.Automotive lock is the vitals of automobile self, is directly connected to the safety of passenger in running car, is also the anti-theft safety device of automobile.At present; in the passenger car system; the layout strategy of main flow is the minimum door-lock motor drive scheme of use cost; namely adopt relay directly to drive door-lock motor; but the commercial car electrical system belongs to the 24V system, therefore for the protection Strategy Design difficulty of door-lock motor far away higher than the passenger car system.
in the commercial car system, because the door-lock motor driving circuit becomes the 24V system from the 12V system, relay is driven door lock to be grafted directly to the commercial car system and to have very large problem, because the working current of the door-lock motor of commercial car system and locked rotor current have increased a lot, cause relay arcing when charged switching serious, and the door-lock motor employing is inductive load, therefore very large to the damage of relay contact, if directly use relay to drive, very easily damage relay contact, thereby relay occurs to be burnt, the insurance that the relay short circuit causes is burnt, lock drive circuit burns, door-lock motor burns and even the insurance of corresponding circuits such as burns at the series of problems, finally cause whole lock drive circuit to lose efficacy.
Therefore, provide a kind of novel commercial car door-lock motor protection system, whole door-lock motor circuit is controlled, protection lock drive circuit and door-lock motor solve the problem that door lock circuit lost efficacy, and are those skilled in the art's problem demanding prompt solutions.
The utility model content
In view of this, the utility model provides a kind of novel commercial car door-lock motor protection system, and whole door-lock motor circuit is controlled, and protection lock drive circuit and door-lock motor solve the problem that door lock circuit lost efficacy.
For achieving the above object, the utility model provides following technical scheme:
A kind of novel commercial car door-lock motor protection system comprises:
Microcontroller;
Be connected by the I/O mouth with described microcontroller, connect by pin circuit state is fed back to described microcontroller, and by the programme controlled driving chip BTS724 in described microcontroller;
Being connected by the I/O mouth with described microcontroller respectively is connected with described driving chip BTS724, receives the control signal of described microcontroller, and controls the relay group that door-lock motor carries out the rotating operation.
Wherein, be connected by a resistance between the pin 8 of described microcontroller and described driving chip BTS724, and be connected with VCC by pull-up resistor.
Wherein, the power pins of described driving chip BTS724 is connected with system power supply.
Wherein, be connected by a resistance between the pin (7) of described microcontroller and described driving chip BTS724 and pin (9), and carry out ground connection by pull down resistor.
Wherein, the pin (2) of described driving chip BTS724 and pin (6) carry out one-way conduction ground connection by a diode.
Wherein, the pin (13) of described driving chip BTS724 is connected with described door-lock motor with pin (14).
Wherein, described relay group is connected with system power supply VB2 by a pull-up resistor.
Wherein, described door-lock motor parallel diode carries out one-way conduction and afterflow connection to described door-lock motor.
Via above-mentioned technical scheme as can be known, compared with prior art, the utility model provides a kind of novel commercial car door-lock motor protection system, comprising: microcontroller; Be connected by the I/O mouth with described microcontroller, connect by pin circuit state is fed back to described microcontroller, and by the programme controlled driving chip BTS724 in described microcontroller; Being connected by the I/O mouth with described microcontroller respectively is connected with described driving chip BTS724, receives the control signal of described microcontroller, and controls the relay group that door-lock motor carries out the rotating operation.By the software algorithm in microcontroller; the break-make of pilot relay group and driving chip BTS724, thereby the not charged switching of assurance relay, protective relay contact effectively; avoid the damage of lock drive circuit and door-lock motor, solve the problem that door lock circuit lost efficacy.
In addition, utilize to drive the diagnostic function of chip BTS724 self, can diagnose open circuit and the short trouble of lock drive circuit, and the faults such as the overcurrent that door-lock motor is occurred and excess temperature judge, realize the fault diagnosis functions to door-lock motor.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to the accompanying drawing that provides other accompanying drawing.
Fig. 1 is the structural representation of the disclosed a kind of novel commercial car door-lock motor protection system of the utility model embodiment;
Fig. 2 is the concrete structure schematic diagram of the disclosed a kind of novel commercial car door-lock motor protection system of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of novel commercial car door-lock motor protection system, comprising: microcontroller; Be connected by the I/O mouth with microcontroller, connect by pin circuit state is fed back to microcontroller, and by the programme controlled driving chip BTS724 in microcontroller; Being connected by the I/O mouth with microcontroller respectively is connected with driving chip BTS724, receives the control signal of microcontroller, and controls the relay group that door-lock motor carries out the rotating operation.By the software algorithm in microcontroller; the break-make of pilot relay group and driving chip BTS724, thereby the not charged switching of assurance relay, protective relay contact effectively; avoid the damage of lock drive circuit and door-lock motor, solve the problem that door lock circuit lost efficacy.
In addition, utilize to drive the diagnostic function of chip BTS724 self, can diagnose open circuit and the short trouble of lock drive circuit, and the faults such as the overcurrent that door-lock motor is occurred and excess temperature judge, realize the fault diagnosis functions to door-lock motor.
The utility model embodiment discloses a kind of novel commercial car door-lock motor protection system, sees also accompanying drawing 1, is the structural representation of the disclosed a kind of novel commercial car door-lock motor protection system of the utility model embodiment.This system comprises: microcontroller 101; Drive chip BTS724102 and be connected by the I/O mouth with microcontroller by pin, circuit state is fed back to microcontroller, and by the programmed control in microcontroller; Relay group 103 is connected by the I/O mouth with microcontroller 101 respectively and is connected with driving chip BTS724102, is used for receiving the control signal of microcontroller 101, and controls the door lock motor M and carry out the rotating operation.
By the software algorithm in microcontroller; the break-make of pilot relay group and driving chip BTS724, thereby the not charged switching of assurance relay, protective relay contact effectively; avoid the damage of lock drive circuit and door-lock motor M, solve the problem that door lock circuit lost efficacy.In addition, utilize to drive the diagnostic function of chip BTS724 self, can diagnose open circuit and the short trouble of lock drive circuit, and the faults such as the overcurrent that the door lock motor M is occurred and excess temperature judge, realize the fault diagnosis functions to the door lock motor M.
See also accompanying drawing 2, be the concrete structure schematic diagram of the disclosed a kind of novel commercial car door-lock motor protection system of the utility model embodiment.Specifically see also shown in accompanying drawing 2, be connected by R3 resistance between the I/O mouth of microcontroller and the pin 8 that drives chip BTS724, and pass through pull-up resistor R2 and be connected with VCC.The power pins 15, pin 16, pin 19, pin 20, pin 12, pin 11, pin 10 and the pin 1 that drive chip BTS724 are connected with system power supply VB1.Be connected by resistance R 4 between the I/O mouth of microcontroller and the pin 7 that drives chip BTS724 and pin 9, and carry out ground connection by pull down resistor R5.The pin 2 and the pin 6 that drive chip BTS724 carry out one-way conduction ground connection by a diode D3.The pin 13 that drives chip BTS724 is connected with door-lock motor with pin 14, for door-lock motor provides system power supply VB1.
Preferably, the relay group is connected with system power supply VB2 by a pull-up resistor R1, and load door lock motor M sustained diode 1 in parallel is connected the door lock motor M and carries out one-way conduction and afterflow connection with D2.Fly-wheel diode is all the two ends that are connected in parallel on door-lock motor M, by electric current the time, can produce induction electromotive force as door-lock motor M at its two ends.When current vanishes, the induction electromotive force of door-lock motor M can produce reverse voltage to the components and parts in circuit., can and drive chip BTS724 to relay and cause damage during higher than breakdown reverse voltage when reverse voltage.Fly-wheel diode is connected in parallel on the coil two ends of door-lock motor M; during current vanishes in flowing through coil; the induction electromotive force that coil produces consumes by the loop acting that diode and coil consist of, thereby has protected the safety of the relay group in the circuit and driving chip BTS724.
This design proposal is by driving the diagnostic function of chip BTS724 self, simultaneously by the programmed control in microcontroller.Open circuit and short trouble to lock drive circuit are diagnosed: when the load that drives chip BTS724 driving is in open-circuit condition, can through the IO mouth, open-circuit condition be fed back to microcontroller 101 by chip pin shown in accompanying drawing 28, microcontroller 101 Programs can be processed by the open-circuit state; When the load that drives chip BTS724102 driving is in short-circuit condition; can through the IO mouth, short-circuit condition be fed back to microcontroller 101 by chip pin shown in accompanying drawing 28, thereby protection drives all components and parts and door-lock motor on chip BTS724102, lock drive circuit.
When adopting lock drive circuit: carry out opening/during the locking order, at first open the relay group, then open and drive chip BTS724, door-lock motor M begins output; When door-lock motor M closes, at first will close and drive chip BTS724, then closed relay again, guarantee the not charged switching of relay, thereby can effectively avoid losing efficacy because relay contact damages the lock drive circuit that causes.After adopting driving chip BTS724, can guarantee the not charged switching of relay realization, thereby avoid the generation of arcing, also just relay contact be protected, prevent from burning the generation of fault.Simultaneously, this driving chip BTS724 carries the diagnostic functions such as open circuit and short circuit, can be at out of order output, the protection lock drive circuit of closing simultaneously of diagnosis.
Above-mentioned relay group comprises two relay: K1 and K2, controls the rotating of door lock motor M by closure and the shutoff of microprocessor controls relay K 1 and relay K 2.In the idle situation of door-lock motor M, relay K 1 and relay K 2 are in off-state, see also accompanying drawing 2, and the contact of relay K 1 is connected to the 4th contact, the contact of relay K 2 is connected to the 10th contact, like this door-lock motor M is connected in whole control circuit.When the electromagnetic induction end of relay K 1 by in I/O mouth place in circuit, the electromagnetism adhesive, relay K 1 contact is connected on the 5th contact, realizes that like this forward of door-lock motor M is controlled; When the electromagnetic induction end of relay K 2 by in I/O mouth place in circuit, the electromagnetism adhesive, relay K 2 contacts are connected to the 9th contact, realize that like this counter-rotating of door-lock motor M is controlled.The electromagnetic induction end of relay K 1 and relay K 2 is connected to system power supply VB2 end; microprocessor controls drives chip BTS724 relay is carried out Power supply; can guarantee the not charged switching of relay realization; thereby avoid the generation of arcing; and then relay contact protects, and prevents from burning the generation of fault.
The diagnostic process process that drives chip BTS724 is: close output when checking to fault, when fault recovery, drive chip BTS724 and recover the Normal Diagnosis state, normally output.If there is the situation of open circuit or overcurrent (excess temperature), can close the door lock driver output, thus the protection lock drive circuit.
In sum: the utility model provides a kind of novel commercial car door-lock motor protection system, comprising: microcontroller; Be connected by the I/O mouth with microcontroller, connect by pin circuit state is fed back to microcontroller, and by the programme controlled driving chip BTS724 in microcontroller; Being connected by the I/O mouth with microcontroller respectively is connected with driving chip BTS724, receives the control signal of microcontroller, and controls the relay group that door-lock motor carries out the rotating operation.By the software algorithm in microcontroller; the break-make of pilot relay group and driving chip BTS724, thereby the not charged switching of assurance relay, protective relay contact effectively; avoid the damage of lock drive circuit and door-lock motor, solve the problem that door lock circuit lost efficacy.
In addition, utilize to drive the diagnostic function of chip BTS724 self, can diagnose open circuit and the short trouble of lock drive circuit, and the faults such as the overcurrent that door-lock motor is occurred and excess temperature judge, realize the fault diagnosis functions to door-lock motor.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from spirit or scope of the present utility model, realization in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a novel commercial car door-lock motor protection system, is characterized in that, comprising:
Microcontroller;
Be connected by the I/O mouth with described microcontroller, connect by pin circuit state is fed back to described microcontroller, and by the programme controlled driving chip BTS724 in described microcontroller;
Being connected by the I/O mouth with described microcontroller respectively is connected with described driving chip BTS724, receives the control signal of described microcontroller, and controls the relay group that door-lock motor carries out the rotating operation.
2. protection system for motor according to claim 1, is characterized in that, is connected by a resistance between the pin (8) of described microcontroller and described driving chip BTS724, and is connected with VCC by pull-up resistor.
3. protection system for motor according to claim 2, is characterized in that, the power pins of described driving chip BTS724 is connected with system power supply VB1.
4. protection system for motor according to claim 3, is characterized in that, is connected by a resistance between the pin (7) of described microcontroller and described driving chip BTS724 and pin (9), and carries out ground connection by pull down resistor.
5. protection system for motor according to claim 4, is characterized in that, pin (2) and the pin (6) of described driving chip BTS724 carry out one-way conduction ground connection by a diode.
6. protection system for motor according to claim 5, is characterized in that, the pin (13) of described driving chip BTS724 is connected with described door-lock motor with pin (14).
7. protection system for motor according to claim 1, is characterized in that, described relay group is connected with system power supply VB2 by a pull-up resistor.
8. protection system for motor according to claim 1, is characterized in that, described door-lock motor is carried out one-way conduction to described door-lock motor parallel diode and afterflow connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220727046 CN203012406U (en) | 2012-12-25 | 2012-12-25 | Novel door lock motor protective system for commercial vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220727046 CN203012406U (en) | 2012-12-25 | 2012-12-25 | Novel door lock motor protective system for commercial vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203012406U true CN203012406U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220727046 Expired - Lifetime CN203012406U (en) | 2012-12-25 | 2012-12-25 | Novel door lock motor protective system for commercial vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203012406U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490683A (en) * | 2013-09-09 | 2014-01-01 | 南京康尼电子科技有限公司 | Three-phase motor operation direction control device |
| CN105281211A (en) * | 2015-11-18 | 2016-01-27 | 浙江中科正方电子技术有限公司 | A control device for a vehicle high-tension distribution box |
-
2012
- 2012-12-25 CN CN 201220727046 patent/CN203012406U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490683A (en) * | 2013-09-09 | 2014-01-01 | 南京康尼电子科技有限公司 | Three-phase motor operation direction control device |
| CN103490683B (en) * | 2013-09-09 | 2017-12-01 | 南京康尼电子科技有限公司 | Three phase electric machine rotation direction control device |
| CN105281211A (en) * | 2015-11-18 | 2016-01-27 | 浙江中科正方电子技术有限公司 | A control device for a vehicle high-tension distribution box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 4 / F, building 1, No.14 Jiuxianqiao Road, Chaoyang District, Beijing 100020 Patentee after: Beijing Jingwei Hengrun Technology Co.,Ltd. Address before: 100101 Beijing city Chaoyang District Anxiang Beili 11 B block 8 layer Patentee before: Beijing Jingwei HiRain Technologies Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |
|
| CX01 | Expiry of patent term |