CN106593147A - Passenger car door lock control unit - Google Patents
Passenger car door lock control unit Download PDFInfo
- Publication number
- CN106593147A CN106593147A CN201510671700.8A CN201510671700A CN106593147A CN 106593147 A CN106593147 A CN 106593147A CN 201510671700 A CN201510671700 A CN 201510671700A CN 106593147 A CN106593147 A CN 106593147A
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- mcu
- door lock
- passenger car
- system base
- base chip
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Abstract
The invention discloses a passenger car door lock control unit. The passenger car door lock control unit comprises an MCU. The MCU is connected with a system basis chip through an SPI bus and a RESET control line. The system basis chip is connected with the output end of a door lock relay through a force unlocking module. The SPI bus is used for transmitting set parameters of the MCU to the system basis chip and an MCU status signal. The RESET control line is used for transmitting a reset signal. The system basis chip is provided with an MCU status timing detection circuit and can provide a 5 V power source. The system basis chip can detect whether the MCU loses efficacy and provides an MCU reset signal. The system basis chip judges whether an unlocking signal is output to the force unlocking module according to whether the MCU loses efficacy and the ON gear status of an ignition switch. The invention further provides the other passenger car door lock control unit. Through the passenger car door lock control units, safe unlocking of a passenger car door lock can be ensured under the circumstance that the passenger car MCU loses efficacy.
Description
Technical field
The present invention relates to vehicle electric field, more particularly to a kind of doorlock control unit of passenger car.
Background technology
Doorlock control unit (referred to as gating) on existing passenger car using main flow is unlocked, is locked or super lock in control
Shi Tongchang adopts control mode as shown in Figure 1.That is, the control signal that user sends, example are gathered by doorlock control unit
Such as control switch in door lock, wireless key signal, mechanical lock switch etc., electronic control unit in doorlock control unit (with
Call MCU in the following text) according to the signal for collecting, after software carries out logical operationss, drive signal is sent to relay module,
By relay module output voltage/electric current, door-lock motor performs and locks accordingly, unlocks or super lock action.
The defect of existing doorlock control unit control mode is primarily present following two defects：
First, all control functions all rely on its core devices MCU, if MCU breaks down, or its in it is soft
Part program malfunctions (MCU failures), gate can lose the drive control to door-lock motor.This kind of situation is referred to as door lock
Failure mode, under failure mode, then there is potential safety hazard in situation about if it happens can not unlock, for example accident or car
When will intaking, cause user unlock and leave vehicle.
2nd, in gate motor drive module (relay) is if occur mechanical viscous, if drive module of locking is glued
Stagnant, then door-lock motor is locked direction driving always, can equally produce potential safety hazard, and for example accident or vehicle will enter
When water, cause user unlock and leave vehicle.
The content of the invention
The technical problem to be solved in the present invention is to provide one kind can safety under passenger car doorlock control unit MCU failure conditions
The doorlock control unit of the passenger car of unblock.
The invention solves the problems that another technical problem be to provide and a kind of fail or riding in passenger car doorlock control unit MCU
In car door control there is the doorlock control unit that can be unlocked safely in the case of machinery is viscous in motor drive module (relay).
The first passenger car doorlock control unit that the present invention is provided energy under passenger car doorlock control unit MCU failure conditions
Safety is unlocked, including：MCU, system base chip, compulsive unlocking module and door lock relay；
MCU passes through spi bus and RESET control line connection system base chips, and system base chip passes through compulsive unlocking
Module connects door lock relay input；
Spi bus are used to transmit arrange parameter and MCU status signal of the MCU to system base chip, RESET control lines
For transmitting reset signal, enable holding wire transmission unblock and enable signal, there is system base chip the timing of MCU states to examine
Slowdown monitoring circuit simultaneously can provide 5V power supplys；
System base chip can detect whether MCU fails and provide MCU reset signals, and system base chip according to MCU is
Whether no failure and ignition switch 0N shelves condition adjudgement export unlocking signal to compulsive unlocking module.
Second passenger car doorlock control unit that the present invention is provided fails in passenger car MCU or the interior motor of passenger car gate drives
Dynamic model block (relay) occurs to unlock safely in the case of machinery is viscous, and which is in above-mentioned the first Car Door lock control list
On the basis of unit, also include：One Acquisition Circuit；Two outfan of door lock relay connects Acquisition Circuit, and Acquisition Circuit can be examined
Survey door lock relay output end level and the level sent to MCU, MCU by the relay output end level for receiving with
MCU logic control instructions are compared, according to comparative result, MCU controls whether door lock relay unlocks.
Further improve, Acquisition Circuit when high level is collected and MCU logic control instructions do not export high level, MCU
Two output ports of opening door lock relay simultaneously are forced, two output port isoelectric levels are made.
Further improve, after two output port isoelectric levels of door lock relay, close the output of door lock relay, collection electricity
Road disconnects unblock relay output when detecting low level.
Due to the time (generally less than 100ms) of motor rotation very little, it is possible to form actual frame for movement and lock,
So for relay high level feedback port, being input into preferably with interrupt or the sampling time being adjusted to extremely short (being less than
100ms), then take immediate measure holding circuit two ends isoelectric level.After the isoelectric level of motor two ends, gate can also be tasted
Examination recovery policy.Be first shut off locking the output of relay, detects and is fed back to low level, and expression relay of locking does not glue
When stagnant, then unblock relay output is disconnected, system recovery is normal afterwards, and function can be reused.
Further improve, the feedback collection at the relay high level output end is input into using interrupt.
Further improve, the Acquisition Circuit sampling time interval is less than or equal to 10ms.
The Acquisition Circuit has two collection terminals and two outfans, including：First resistor one end is used as the Acquisition Circuit
The first collection terminal other end as the Acquisition Circuit the first outfan and by 3rd resistor be grounded；Second resistance one end
As the Acquisition Circuit the second collection terminal other end as the collector the second outfan and connect by the 4th resistance
Ground；First collection terminal is grounded by the first diode, and the second collection terminal is grounded by the second diode.
Further improve, MCU sends MCU status signal to system base chip by spi bus by setting time interval
(being patrolled and examined using house dog), if system base chip time-out does not receive MCU status signals (equivalent to feeding-dog signal),
Then system base chip judges MCU failures/software fault (MCU failures), by RESET control line first time reset MCU
And record this reset；
If first time MCU reset after system base chip receive MCU status signals if remove first time MCU reset record；
If system base chip cannot still receive MCU status signals after first time MCU resets, start limp-home mould
Formula is until system base chip receives MCU status signals；
During limp-home mode and ignition switch 0N shelves, system base chip control compulsive unlocking module compulsive unlocking.
Compulsive unlocking：During limp-home mode and vehicle be in ON shelves, when system base chip sends control signal LIMPHOME
Afterwards, and power supply is powered effectively, the built-in timer of the compulsive unlocking module, export an about 500ms high level arteries and veins
Punching, drives lock motor unblock, output after 500ms to close.So the compulsive unlocking module is defeated according to effective control signal
Enter and successfully unlock.
A kind of compulsive unlocking module that the present invention is provided includes：
One power supply connect car load power supply and with pulse generator UNICOM；
One RC circuits and pulse generator UNICOM, the control signal that pulse generator reception system base chip sends are simultaneously defeated
Go out drive signal to door-lock motor.
Existing passenger car doorlock control unit MCU is directly acquire inputted signal, after being converted to logic output, drives output
Circuit, door lock control function.Existing passenger car doorlock control unit, if MCU occurs failure, user directly can lose
These functions, reduce satisfaction；If there is MCU failures in the case of car door is locked, electronic unlocking function is directly lost,
Cause user by it is locked in the car, above-mentioned two situations also result in the stranded in-car potential safety hazard of user.
The first passenger car doorlock control unit that the present invention is provided, firstly for the detection of door lock driving element, can be effective
Locked caused by avoiding driving element failure by mistake.Secondly, using system base chip to MCU implementing monitorings, monitor MCU
Whether state (fails), and can combine limp-home mode compulsive unlocking module by system base chip, loses in MCU
After effect, the compulsive unlocking module can be made to enter effective model, it is ensured that unlocking function, be prevented user locked feelings in the car
Condition, it is to avoid potential safety hazard, improves vehicle safety.
Second passenger car doorlock control unit that the present invention is provided is being above-mentioned the first passenger car doorlock control unit
On the basis of increase Acquisition Circuit, by two outfan level detection of door lock relay, MCU will be the relay for receiving defeated
Go out to hold level to be compared with MCU logic control instructions and judge whether that generation relay is viscous, MCU is according to comparative result control
Whether door lock relay processed unlocks.Second passenger car doorlock control unit of the present invention can be in passenger car doorlock control unit
MCU fails or the interior motor drive module (relay) of passenger car gate occurs to be unlocked in the case of machinery is viscous safely, it is ensured that
Unlocking function, prevents user locked situation in the car, it is to avoid potential safety hazard, improves vehicle safety.
Description of the drawings
The present invention is further detailed explanation with specific embodiment below in conjunction with the accompanying drawings：
Fig. 1 is a kind of structural representation of existing passenger car doorlock control unit.
Fig. 2 is the structural representation of the first passenger car doorlock control unit embodiment that the present invention is provided.
Fig. 3 is the structural representation of second passenger car doorlock control unit embodiment that the present invention is provided.
Fig. 4 is one embodiment pin assignment schematic diagram of system base chip.
Fig. 5 is the structural representation of one embodiment of Acquisition Circuit of the present invention.
Fig. 6 is the structural representation of one embodiment of compulsive unlocking module that the present invention is provided.
Description of reference numerals
Door lock bridge type relay two input A, B
Door lock bridge type relay two outfan C, D
Acquisition Circuit Monitor
System base chip SBC
Compulsive unlocking module LIMPHOME LOGIC
Timely checking circuit Time Counter
Power supply KL15, KL30, Ubat
Pulse generator Pulse
Door lock bridge type relay Relay Coil Driver
Acquisition Circuit first, second collection terminal E, F
Acquisition Circuit first, second outfan G, H
Specific embodiment
As shown in Fig. 2 the present invention provide can unlock safely under passenger car doorlock control unit MCU failure conditions take advantage of
Car door lock control unit, an embodiment is used to include：MCU, system base chip, compulsive unlocking module and door lock bridge-type after
Electrical equipment；
MCU passes through spi bus and RESET control line connection system base chips SBC, and system base chip SBC passes through
Compulsive unlocking module LIMPHOME LOGIC connects door lock bridge type relay input A, B；
The interface pin point of a kind of possible embodiments of system base chip SBC, system base chip SBC and MCU is provided
Cloth, as shown in Figure 4；In the embodiment, system base chip SBC produces IC chip UJA107X series using NXP；
Wherein pin 9,10,11 is spi bus line, is connected with the SPI mouths of MCU, and pin 6 is resetting pin (RESET),
It is connected with the resetting pin (RESET) of MCU, pin 17 is that LIMPHOME enables holding wire, thus constitutes system
The basic connection in this application of base chip SBC.Pin other than the above has other work(in system base chip SBC
Can, because " the limp-home function " that proposed with the application is not directly dependent upon, belong to the intrinsic pin of the chip (conventional
Using method, shown in reference table 1) here is omitted.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| TXDL2 | RXDL2 | TXDL1 | V1 | RXDL1 | RSTN | INTN | EN |
| 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| SDI | SDO | SCK | SCSN | TXDC | RXDC | TEST1 | WDOFF |
| 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
| LIMP | WAKE1 | WAKE2 | V2 | CANH | CANL | GND | SPLIT |
| 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 |
| LIN1 | DLIN | LIN2 | WBIAS | VEXCC | TEST2 | VEXCTRL | BAT |
Table 1
Spi bus are used for MCU to system base chip SBC arrange parameter and transmission MCU status signals, RESET controls
Line transmits reset signal, enables holding wire LIMPHOME transmission unblocks and enables signal, and system base chip SBC has MCU
State timely checking circuit Time Counter simultaneously can provide 5V power supplys；
System base chip SBC can detect whether MCU fails and provide MCU reset signals, system base chip SBC root
Whether fail according to MCU and whether ignition switch 0N shelves condition adjudgement exports unlocking signal to compulsive unlocking module LIMPHOME
LOGIC；
MCU sends MCU status signal (using see to system base chip SBC by spi bus by setting time interval
Door is patrolled and examined by Canis familiaris L.), if system base chip SBC time-out does not receive MCU status signals (equivalent to feeding-dog signal), be
System base chip SBC judges MCU failures/software fault (MCU failures), by RESET control line first time reset MCU
And record this reset；The is removed if system base chip SBC after first time MCU resets receives MCU status signals
MCU resets and records；If system base chip SBC cannot still receive MCU status signals after first time MCU resets,
Then start limp-home mode until system base chip SBC receives MCU status signals；During limp-home mode
And ignition switch 0N shelves, system base chip SBC control compulsive unlocking module LIMPHOME LOGIC control door lock bridge-types
Relay compulsive unlocking；
Compulsive unlocking function is completed by a compulsive unlocking module LIMPHOME LOGIC, and its input derives from system
Control signal LIMPHOME and the input of ignition switch ON shelves that base chip SBC is provided, its output directly control solution
Lock relay.When system base chip SBC detects MCU failures, after providing control signal LIMPHOME, if this
When vehicle be in ON shelves, then the compulsive unlocking module forces one 500ms high level of output to unlocking relay so that
Gate completes the compulsive unlocking function under MCU failures.
As shown in figure 3, motor drive module (the relay in passenger car MCU fails or passenger car is gated that the present invention is provided
Device) occur machinery it is viscous in the case of one embodiment of doorlock control unit that can unlock safely, on the basis of the first embodiment
On also include：One Acquisition Circuit Monitor, MCU connections door lock bridge type relay two input A, B, door lock bridge-type after
Electrical equipment two outfan C, D connect Acquisition Circuit Monitor, Acquisition Circuit Monitor feedback signal to the MCU；MCU
The relay output end level for receiving and MCU logic control instructions are compared, MCU controls door according to comparative result
Whether lock bridge type relay unlocks.
Acquisition Circuit Monitor can detect door lock bridge type relay outfan level (such as high level) and send out the level
MCU is delivered to, whether the door lock bridge type relay outfan level for receiving (is required by MCU with MCU logic control instructions
Output high level) it is compared, according to comparative result, MCU controls whether door lock bridge type relay unlocks.
, when high level is collected and MCU logic control instructions do not export high level, MCU is strong for Acquisition Circuit Monitor
System is while opening door lock bridge type relay two output ports C, D, make two output port C, D isoelectric levels；
Due to the time (generally less than 100ms) of motor rotation very little, it is possible to form actual frame for movement and lock,
So for relay high level feedback port, being input into preferably with interrupt or the sampling time being adjusted to extremely short, Ran Houli
Take measures at quarter to keep bridge circuit two ends isoelectric level.After the isoelectric level of motor two ends, gate can also attempt to recovery policy.
Be first shut off locking the output of relay, detects and is fed back to low level, expression lock relay it is not viscous when, then
Unblock relay output is disconnected, system recovery is normal afterwards, and unlocking function can be reused；
Further improve, the door lock bridge type relay high level output end is input into using interrupt or the Acquisition Circuit
Monitor can also be in the form of sampling time interval be less than or equal to 10ms.
As shown in figure 5, one embodiment of Acquisition Circuit of the present invention, Acquisition Circuit have two collection terminals E, F and two it is defeated
Go out and hold G, H, first resistor R1 one end as the Acquisition Circuit the first collection terminal E other ends as the Acquisition Circuit
First outfan G is simultaneously grounded by 3rd resistor R3；Second collection terminal of the second resistance R2 one end as the Acquisition Circuit
The F other ends as the collector the second outfan H and by the 4th resistance R4 be grounded；First collection terminal E is by the
One diode D1 is grounded, and the second collection terminal F is grounded by the second diode D2.
When the Acquisition Circuit works, its first, second collection terminal connects door lock two outfans of bridge type relay, the first,
The output of second outfan gathers signal to MCU.
As shown in fig. 6, a kind of compulsive unlocking module LIMPHOME LOGIC that the present invention is provided includes：
One power supply KL15 connect car load power supply and with pulse generator Pulse UNICOMs；
One RC circuits and pulse generator Pulse UNICOMs, pulse generator Pulse reception systems base chip SBC are sent out
Control signal LIMPHOME that goes out output drive signal is to door-lock motor.
The present invention is described in detail above by specific embodiment and embodiment, but these have not been constituted to this
The restriction of invention.Without departing from the principles of the present invention, those skilled in the art can also make many deformations and change
Enter, these also should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of passenger car doorlock control unit, it is characterised in that include：MCU, system base chip, compulsive unlocking
Module and door lock relay；
MCU passes through spi bus and RESET control line connection system base chips, and system base chip is by enabling signal
Line connects compulsive unlocking module, compulsive unlocking module connection door lock relay input；
Spi bus are used to transmit arrange parameter and MCU status signal of the MCU to system base chip, RESET control lines
For transmitting reset signal, enable holding wire transmission unblock and enable signal, there is system base chip the timing of MCU states to examine
Slowdown monitoring circuit simultaneously can provide 5V power supplys；
System base chip can detect whether MCU fails and provide MCU reset signals, and system base chip according to MCU is
Whether no failure and ignition switch 0N shelves condition adjudgement export unlocking signal to compulsive unlocking module.
2. passenger car doorlock control unit as claimed in claim 1, it is characterised in that also include：One Acquisition Circuit,
Two outfan of door lock relay connects Acquisition Circuit, and Acquisition Circuit can detect that door lock relay output end level simultaneously should
Level is sent to MCU, and the relay output end level for receiving and MCU logic control instructions are compared by MCU, MCU
Control whether door lock relay unlocks according to comparative result.
3. passenger car doorlock control unit as claimed in claim 2, it is characterised in that：
When high level is collected and MCU logic control instructions do not export high level, MCU forces same the Acquisition Circuit
When opening door lock two output ports of relay, make two output port isoelectric levels.
4. passenger car doorlock control unit as claimed in claim 3, it is characterised in that：
After two output port isoelectric levels of door lock relay, the output of door lock relay is closed, and Acquisition Circuit detects low electricity
Unblock relay output is disconnected at ordinary times.
5. passenger car doorlock control unit as claimed in claim 2, it is characterised in that：The door lock relay high level
The feedback collection of outfan is input into using interrupt.
6. passenger car doorlock control unit as claimed in claim 2, it is characterised in that：The Acquisition Circuit sampling time
Interval is less than or equal to 10ms.
7. passenger car doorlock control unit as claimed in claim 2, it is characterised in that：The Acquisition Circuit has two
Collection terminal and two outfans, including：First resistor one end as the Acquisition Circuit the first collection terminal other end as this
First outfan of Acquisition Circuit is simultaneously grounded by 3rd resistor；Second resistance one end is gathered as the second of the Acquisition Circuit
Hold the other end as the second outfan of the collector and pass through the 4th resistance eutral grounding；First collection terminal passes through the one or two pole
Pipe is grounded, and the second collection terminal is grounded by the second diode.
8. the passenger car doorlock control unit as described in claim 1 to 7 any one, it is characterised in that：MCU is by setting
Fix time to be spaced and send MCU status signal to system base chip by spi bus, if system base chip time-out does not connect
MCU status signals are received, then system base chip judges MCU failures/software fault, by RESET control lines first
Secondary reset MCU simultaneously records this reset；
If first time MCU reset after system base chip receive MCU status signals if remove first time MCU reset record；
If system base chip cannot still receive MCU status signals after first time MCU resets, start limp-home mould
Formula is until system base chip receives MCU status signals；
During limp-home mode and ignition switch 0N shelves, system base chip control compulsive unlocking module compulsive unlocking.
9. the passenger car doorlock control unit as described in claim 1 to 7 any one, it is characterised in that：
Compulsive unlocking module includes：
One power supply connect car load power supply and with pulse generator UNICOM；
One RC circuits and pulse generator UNICOM, the control signal that pulse generator reception system base chip sends are simultaneously defeated
Go out drive signal to door-lock motor.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510671700.8A CN106593147B (en) | 2015-10-16 | 2015-10-16 | Passenger car doorlock control unit |
| GB1806778.5A GB2557850B (en) | 2015-10-16 | 2016-09-28 | Passenger vehicle door lock control device |
| PCT/CN2016/100488 WO2017063501A1 (en) | 2015-10-16 | 2016-09-28 | Passenger vehicle door lock control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510671700.8A CN106593147B (en) | 2015-10-16 | 2015-10-16 | Passenger car doorlock control unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106593147A true CN106593147A (en) | 2017-04-26 |
| CN106593147B CN106593147B (en) | 2019-08-13 |
Family
ID=58555061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510671700.8A Active CN106593147B (en) | 2015-10-16 | 2015-10-16 | Passenger car doorlock control unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN106593147B (en) |
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| CN107942772A (en) * | 2017-10-27 | 2018-04-20 | 德韧干巷汽车系统（上海）有限公司 | A kind of limphome circuits of electronic selector |
| CN108091026A (en) * | 2018-01-18 | 2018-05-29 | 深圳市赛礴瑞科技有限公司 | A kind of two-wire system access control system |
| CN108363003A (en) * | 2018-05-08 | 2018-08-03 | 新乡市荣泰电器有限公司 | A kind of vehicle-mounted relay state monitoring method and system |
| CN110374415A (en) * | 2019-08-20 | 2019-10-25 | 深圳市志诚科莱帝科技有限公司 | Door lock control system |
| CN113147633A (en) * | 2021-04-13 | 2021-07-23 | 联合汽车电子有限公司 | Power distribution module and automobile body controller |
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| CN113147633B (en) * | 2021-04-13 | 2023-03-31 | 联合汽车电子有限公司 | Power distribution module and automobile body controller |
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