CN107021067B - Vehicle locking control system and method - Google Patents

Vehicle locking control system and method Download PDF

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Publication number
CN107021067B
CN107021067B CN201610069694.3A CN201610069694A CN107021067B CN 107021067 B CN107021067 B CN 107021067B CN 201610069694 A CN201610069694 A CN 201610069694A CN 107021067 B CN107021067 B CN 107021067B
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control
module
signal
delay
control module
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CN107021067A (en
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叶志聪
蔡运文
陈茹涛
肖振隆
汤益明
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XIAMEN YAXUN NETWORK CO Ltd
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XIAMEN YAXUN NETWORK CO Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20—Means to switch the anti-theft system on or off
    • B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle

Abstract

The invention discloses car locking control systems, which comprise a microprocessor, a signal coding module, a power supply control module, an RC delay control module and a control feedback module, wherein the microprocessor is respectively connected with the input end of the signal coding module and the control end of the power supply control module, the th control end of the RC delay control module is connected with the output end of the signal coding module, the second control end of the RC delay control module is connected with the output end of the power supply control module, and the output end of the RC delay control module is connected with the control feedback module.

Description

Vehicle locking control system and method
Technical Field
The invention relates to the technical field of electronics, in particular to vehicle locking control systems and methods.
Background
The conventional vehicle locking is characterized in that the IO of a CPU is used for directly controlling a relay switch or an IO output pulse is used for controlling a Schmidt trigger and then controlling the output of an MOS (metal oxide semiconductor) tube or a relay, and various protective measures are required to be taken by matching with software.
Disclosure of Invention
The invention aims to solve the technical problem of providing vehicle locking control systems and methods with multiple protections, which can realize safe and effective vehicle locking without software protection.
In order to solve the technical problems, the invention adopts the technical scheme that:
vehicle locking control system comprises a microprocessor, a signal coding module, a power supply control module, an RC delay control module and a control feedback module, wherein the microprocessor is respectively connected with the input end of the signal coding module and the control end of the power supply control module, the th control end of the RC delay control module is connected with the output end of the signal coding module, the second control end of the RC delay control module is connected with the output end of the power supply control module, and the output end of the RC delay control module is connected with the control feedback module.
The vehicle locking control system has the beneficial effects that: the input end of the signal coding module is connected with the microprocessor and can code the signal output by the microprocessor; the control end of the power control module is connected with the microprocessor, so that the power supply can be controlled to be turned on and off, the signal coding module can filter coded signals by being connected with the RC delay control module, whether voltage for locking the vehicle is output or not is controlled, and whether the voltage output by the RC delay control module is abnormal or not is detected by connecting the output end of the RC delay control module with the control feedback module, so that the purpose of locking the vehicle with multiple guarantees is achieved, and the vehicle locking control for multiple protection of the vehicle is realized.
A vehicle locking control method, comprising:
the signal coding module acquires a vehicle locking control signal of the microprocessor and codes the vehicle locking control signal;
the signal coding module outputs the coded signal to the RC delay control module, and the RC delay control module controls the second switch unit after carrying out delay filtering on the coded signal;
the second switch unit outputs a control voltage according to the coding signal;
the control feedback module collects the output control voltage and detects whether the output is abnormal.
The vehicle locking control method has the beneficial effects that: the signal coding module codes the lock control signal, and can realize various coded signals through a plurality of pins, so that the expansibility is improved; the RC delay control module carries out delay filtering on the coded signal and controls the second switch unit according to the coded signal so as to realize control on the output of control voltage for locking the vehicle; the control feedback module collects the output control voltage, so that abnormal conditions can be detected in time, the reliability of vehicle locking control is ensured, and the vehicle locking control with multiple protections is realized.
Drawings
Fig. 1 is a block diagram of a vehicle locking control system of embodiment of the present invention;
fig. 2 is a circuit diagram of a vehicle locking control system according to embodiment of the present invention;
fig. 3 shows a coding manner of a decoder U1 of the locking control system of embodiment of the present invention;
fig. 4 is a flowchart of a vehicle locking control method according to a third embodiment of the present invention.
Description of reference numerals:
1. the device comprises a signal coding module, a power supply control module, a switch unit (21, ), a RC delay control module (3, RC delay control module), a switch unit (31, 4) and a control feedback module.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
The invention has the key conception that the power supply control module controls whether the power supply is switched on or not according to the vehicle locking control signal output by the microprocessor; the signal coding module codes the vehicle locking signal output by the microprocessor; filtering the coded signals and controlling the output of control voltage for locking the vehicle; the control feedback module detects the output control voltage.
Referring to fig. 1 to 3 of the drawings,
vehicle locking control systems comprise a microprocessor MCU, a signal coding module 1, a power supply control module 2, an RC delay control module 3 and a control feedback module 4, wherein the microprocessor MCU is respectively connected with the input end of the signal coding module 1 and the control end of the power supply control module 2, the th control end of the RC delay control module 3 is connected with the output end of the signal coding module 1, the second control end is connected with the output end of the power supply control module 2, and the output end is connected with the control feedback module 4.
From the above description, the vehicle locking control system of the present invention has the following beneficial effects: the input end of the signal coding module 1 is connected with the microprocessor MCU and can code signals output by the microprocessor MCU; the control end of the power control module 2 is connected with the MCU, the power supply can be controlled to be turned on and off, the signal coding module 1 can filter coded signals by being connected with the RC delay control module 3, whether voltage for locking the vehicle is output or not is controlled, whether the voltage output by the RC delay control module 3 is abnormal or not is detected by being connected with the control feedback module 4 through the output end of the RC delay control module 3, the purpose of locking the vehicle with multiple guarantees is achieved, and vehicle locking control for multiple protection of the vehicle is achieved.
, the signal encoding module 1 includes a decoder , a decoder U1, and the decoder U1 includes a plurality of encoding pins.
From the above description, it can be known that various coding signals can be realized through a plurality of pins, so that the expansibility is improved, and the requirement on the pins of the microprocessor MCU is reduced.
, the power control module 2 includes a switching unit 21 and a control transistor Q1, the switching unit 21 is a P-channel MOS transistor Q2, the base of the control transistor Q1 is connected to the microprocessor MCU, the collector is connected to the gate of the MOS transistor Q2, the emitter is grounded, and the drain of the MOS transistor Q2 is connected to the second control terminal of the RC delay control module 3.
As can be seen from the above description, the transistor Q1 is controlled to turn on and off the th switching unit 21, so as to control the voltage to be turned on or off, and the circuit is simple by using the P-channel MOS transistor Q2 as the th switching unit 21.
, the power control module 2 comprises a relay, the input end of the relay is connected with the microprocessor MCU, and the output end of the relay is connected with the second control end of the RC delay control module 3.
As can be seen from the above description, the power supply is controlled by switching on or off the relay.
, the RC delay control module 3 includes a resistor R1, a 0 capacitor C1, and a 1 second switch unit 31, where a end of the resistor R1 and a end of the capacitor C1 are connected in parallel to a control end of the second switch unit 31, another end of the resistor R1 is connected to the output end of the signal encoding module 1, and another end of the capacitor C1 is grounded.
As can be seen from the above description, the encoding signal output by the signal encoding module 1 is subjected to delay filtering by RC circuits, and the second switch unit 31 is controlled to be turned on or off by charging and discharging the th capacitor C1.
, the RC delay control module 3 further includes a th diode D1, wherein the anode of the th diode D1 is connected to the power control module 2, and the cathode is connected to the second switch unit 31.
, the control feedback module 4 includes at least diodes D2.
As can be seen from the above description, the control voltages of the respective lines are fed back through the diode D2.
Referring to fig. 4 of the drawings, a schematic diagram of a display device,
A vehicle locking control method, comprising:
s1, the signal coding module 1 acquires a locking control signal of the microprocessor MCU and codes the locking control signal;
s2, the signal encoding module 1 outputs the encoded signal to the RC delay control module 3, and the RC delay control module 3 performs delay filtering on the encoded signal and controls the second switch unit 31;
s3, the second switch unit 31 outputs a control voltage according to the coding signal;
and S4, the control feedback module 4 collects the output control voltage and detects whether the output is abnormal.
From the above description, the car locking control method of the present invention has the following beneficial effects: the signal coding module 1 codes the locking control signals, and can realize various coded signals through a plurality of pins, so that the expansibility is improved; the RC delay control module 3 carries out delay filtering on the coded signal and controls the second switch unit 31 according to the coded signal so as to realize control on the output of control voltage for locking the vehicle; the control feedback module 4 collects the output control voltage, so that abnormal conditions can be detected in time, the reliability of vehicle locking control is ensured, and the vehicle locking control with multiple protections is realized.
And step , the signal coding module 1 codes the locking control signals and then filters the locking control signals with the codes of all 0 and all 1.
As can be seen from the above description, since the IO port output of the MCU is usually all 0 or all 1 when the MCU is abnormally started, the abnormal condition of the MCU is filtered out by filtering the lock control signals of all 0 and all 1.
, further comprising:
the power control module 2 obtains a locking control signal of the microprocessor MCU, controls the th switch unit 21 according to the locking control signal, and the th switch unit 21 is electrically connected with the second switch unit 31.
As is apparent from the above description, only when both the th switching unit 21 and the second switching unit 31 satisfy the condition, the control voltage for locking the vehicle can be output, increasing reliability.
Example
Referring to fig. 1 to 3, an embodiment of the present invention is:
vehicle locking control systems are shown in figure 1 and comprise a microprocessor MCU which comprises a signal coding module 1, a power supply control module 2, an RC delay control module 3 and a control feedback module 4, wherein the microprocessor MCU is respectively connected with the input end of the signal coding module 1 and the control end of the power supply control module 2, the th control end of the RC delay control module 3 is connected with the output end of the signal coding module 1, the second control end is connected with the output end of the power supply control module 2, and the output end is connected with the control feedback module 4.
Specifically, as shown in fig. 2, the signal coding module 1 includes a decoder U1, the decoder U1 includes a plurality of coding pins, preferably three pins, such as MCU _ IO _ A, MCU _ IO _ B and MCU _ IO _ C shown in fig. 2, the pins are connected to a microprocessor MCU, decoder U1 encodes the lock control signal output by the microprocessor MCU, as shown in fig. 3, a decoder U1 coding mode is shown, A, B, C corresponds to three pins MCU _ IO _ A, MCU _ IO _ B and MCU _ IO _ C, different IO input signals correspond to different decoder outputs, and a suitable pin is selected according to the control signal to control the RC delay control module 3, so that lock control can be implemented.
The RC delay control module 3 mainly includes an th resistor R1, a th capacitor C1, a th switch unit 31, a th diode D1, a th switch unit R2, and preferably, the second switch unit 31 is a P-channel MOS transistor Q3.
The control feedback module 4 comprises at least diodes D2.
The power control module 2 mainly includes the switching unit 21, control the triode Q1, the third resistor R3, the fourth resistor R4 and the fifth resistor R5, the switching unit 21 is the P-channel MOS transistor Q2.
The base electrode of the control triode Q is connected with a control signal MCU _ IO _ CON of the microprocessor MCU, preferably, the control signal MCU _ IO _ CON of the microprocessor MCU is connected through a fifth resistor R, the collector electrode is connected with the grid electrode of the MOS tube Q, the emitter electrode is grounded, the drain electrode of the MOS tube Q is connected with a second capacitor C of the RC delay control module 3, the end of the third resistor R is connected with the base electrode of the control triode Q, the other end 0 is grounded, the end of the fourth resistor R1 is connected with the source electrode of the MOS tube Q, the other end 2 is connected with the grid electrode of the MOS tube Q, the end 4 of the 3 rd resistor R and the end of the 5 th capacitor C are connected in parallel with the grid electrode of the MOS tube Q, the other end of the third resistor R is connected with the output end Y of the decoder U, for example, the other end of the second capacitor C is grounded, the positive electrode of the second diode D is connected with the drain electrode of the MOS tube Q in the power control module 2, the negative electrode is connected with the source electrode of the MOS tube Q, the positive electrode of the second resistor R is connected with the drain electrode of the MCU tube Q.
The vehicle locking process flow of the vehicle locking control system is as follows:
the method includes that an IO output of a microprocessor MCU corresponds to a lock control signal gate corresponding to a pin of a decoder U1, if MCU _ IO _ A is '1', MCU _ IO _ B is '0' and MCU _ IO _ C is '0', a Y1 pin of the decoder U1 is gated, a corresponding pin Y1 outputs a low level, charges of a th capacitor C1 are discharged through a th resistor R1, after passing through an RC delay filter circuit, the voltage is lower than threshold voltage of an MOS tube Q3, the MOS tube Q3 is controlled to be conducted, an IO port MCU _ IO _ CON of the microprocessor MCU outputs a high level, a transistor Q1 is controlled through a fifth resistor R5 and a third resistor R3 to conduct a base of a P-channel MOS tube Q2 to be pulled down, a source and a drain of the MOS tube Q2 conduct a power supply to a source of an MOS tube Q3, and the front MOS tube Q3 is conducted, so that a control voltage CON of a lock control signal is output, and lock control voltage CON _ OUT is achieved.
The unlocking process flow of the vehicle locking control system is as follows:
when the lock-up vehicle is not needed, the IO port MCU _ IO _ CON of the microprocessor MCU outputs a low level or selects a pin corresponding to the low level after MCU _ IO _ A, MCU _ IO _ B and MCU _ IO _ C output signal coding, if a Y1 pin is selected, the coding of the microprocessor is MCU _ IO _ A ═ 0 ', MCU _ IO _ B ═ 1 ', and MCU _ IO _ C ═ 0 ', the lock-up vehicle output can be closed, and the lock-up vehicle is unlocked.
The feedback control method of the vehicle locking control system comprises the following steps:
feeding back the control voltage output by the CON _ OUT to an MCU _ IO _ AD port of the microprocessor through a diode D2;
when the vehicle locking control signal is output, the MCU _ IO _ AD port of the microprocessor cannot acquire control voltage, and then the control port CON _ OUT is judged to be an open circuit, and the vehicle locking control system works abnormally;
when the locking control signal is turned on or off, the MCU _ IO _ AD port of the microprocessor acquires power supply voltage, and then the control port CON _ OUT is judged to be short-circuited to a power supply, so that the locking control system works abnormally;
when the locking control signal is turned on or off, the MCU _ IO _ AD port of the processor acquires the ground voltage, and then the control port CON _ OUT is judged to be short-circuited to the ground, so that the locking control system works abnormally;
the collected feedback voltage is compared with the power supply voltage, whether the current is abnormal or not can be identified, and when the current is abnormal, the current of the control port CON _ OUT is judged to be abnormal, and the work of the vehicle locking control system is abnormal.
Example two:
the second embodiment of the present invention is an improvement on the basis of the second embodiment , and the relay is used to replace the power control module 2 in fig. 2, so as to control the power.
EXAMPLE III
Referring to fig. 4, a third embodiment of the present invention is:
A method for controlling locking of a vehicle with the vehicle locking control system of embodiment or embodiment two, comprising:
the power control module 2 acquires a locking control signal of the microprocessor MCU, controls the th switch unit 21 according to the locking control signal, and the th switch unit 21 is electrically connected with the second switch unit 31;
the method comprises the following steps that a signal coding module 1 obtains a vehicle locking control signal of a microprocessor, wherein the vehicle locking control signal comprises a vehicle locking signal and an unlocking signal; coding the vehicle locking control signals, and filtering the vehicle locking control signals with the codes of all 0 and all 1; specifically, because the IO port of the microprocessor MCU is usually all 0 or all 1 when the microprocessor MCU is turned on, reset or fails, the output pin of the corresponding signal coding module when the IO port of the microprocessor MCU is all 0 or all 1 is not used after the lock control signal in the signal coding module 1 is coded, thereby filtering the abnormal condition of the microprocessor MCU.
The signal coding module 1 outputs a coded signal to the RC delay control module 3, the RC delay control module 3 performs delay filtering on the coded signal to control the second switch unit 31, specifically, when the car locking control signal is a car locking signal, namely, when a car needs to be locked, the signal coding module 1 codes the car locking signal output by the microprocessor MCU and selects an output pin outputting a low-level signal to be connected to the RC delay control module 3, namely, the low-level signal is input into the RC delay control module 3, the RC delay control module 3 performs delay filtering on the low level, so that the voltage after delay filtering is lower than a threshold voltage of the second switch unit , the second switch unit 31 is conducted, meanwhile, the power control module 2 acquires a high level output by an IO port MCU _ IO _ CON of the microprocessor MCU, the switch unit 21 of the power control module 2 is conducted to output power to the second switch unit 31, and the second switch unit 31 is electrically connected as the second switch unit 31 is already opened, so that the power supply output from the second switch unit 31, namely, the second switch 31 is used for outputting the car locking voltage, and the switch 6321 and the second switch 31 is electrically connected to the second switch unit 31, so that the car locking voltage can be output only when the second switch 31 and the second switch 6335 are electrically connected.
When the locking control signal is an unlocking signal, namely the vehicle needs to be unlocked, the signal coding module 1 codes the locking control signal output by the microprocessor MCU and selects an output pin which outputs a high-level signal to be connected to the RC delay control module 3, namely the high-level signal is input into the RC delay control module 3, the RC delay control module 3 carries out delay filtering on the high level, so that the voltage after delay filtering is higher than the threshold voltage of the second switch unit 31, the second switch unit 31 is not conducted, or the power control module 2 obtains the low level output by the MCU _ IO _ CON of the microprocessor, the switch unit 21 of the power control module 2 is not conducted and cannot output power to the second switch unit 31, and finally the control voltage for locking the vehicle cannot be output, so that the vehicle is unlocked.
The control feedback module 4 collects the output control voltage and detects whether the output is abnormal, specifically, when the vehicle locking control signal is output but the control voltage cannot be collected, the system fault can be judged to be an open circuit; when the vehicle locking control signal is a vehicle locking signal or an unlocking signal, the control voltage is acquired as the power supply voltage, and the fault can be judged to be the output short circuit of the second switch unit to the power supply; when the vehicle locking control signal is a vehicle locking signal or an unlocking signal, the control voltage is collected to be the ground voltage, and then the fault can be judged to be the output short circuit of the second switch unit to the ground; and comparing the acquired control voltage with the power supply voltage to identify current abnormity.
In summary, the car locking control system and method provided by the invention have the advantages that the signal coding module codes car locking control signals output by the microprocessor and filters car locking control signals with codes of all 0 and all 1, so that abnormal conditions of the microprocessor are filtered, the coded signals are subjected to delay filtering by the RC delay control module and then control the second switch unit to be switched on or switched off, the power supply control module obtains the car locking control signals of the microprocessor and controls the switch unit to be switched on or switched off according to the car locking control signals, the switch unit is electrically connected with the second switch unit, so that control voltage for locking a car can be output only when the switch unit and the second switch unit simultaneously meet output conditions, wrong car locking is avoided, the feedback module is controlled to collect the output control voltage and detect whether the output is abnormal or not, so that abnormal conditions can be found in time, the guarantee of car locking control is improved, and the car locking control system and method with multiple protections are realized.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.

Claims (10)

  1. The vehicle locking control system comprises a microprocessor, and is characterized by further comprising a signal coding module, a power supply control module, an RC delay control module and a control feedback module, wherein the microprocessor is respectively connected with the input end of the signal coding module and the control end of the power supply control module, the th control end of the RC delay control module is connected with the output end of the signal coding module, the second control end of the RC delay control module is connected with the output end of the power supply control module, and the output end of the RC delay control module is connected with the control feedback module.
  2. 2. The lock car control system of claim 1, wherein the signal encoding module comprises an decoder, the decoder comprising a plurality of encoding pins.
  3. 3. The locking control system of claim 1, wherein the power control module comprises a switching unit and a control transistor, the switching unit is a P-channel MOS transistor, a base of the control transistor is connected to the microprocessor, a collector of the control transistor is connected to a gate of the MOS transistor, an emitter of the control transistor is grounded, and a drain of the MOS transistor is connected to the second control terminal of the RC delay control module.
  4. 4. The vehicle locking control system of claim 1, wherein the power control module comprises an relay, an input end of the relay is connected with the microprocessor, and an output end of the relay is connected with the second control end of the RC delay control module.
  5. 5. The vehicle locking control system according to any of claims 1-4, wherein the RC delay control module comprises a th resistor, a 0 th capacitor and a 1 second switch unit, a terminal of the th resistor and a terminal of an th capacitor are connected in parallel to a control terminal of the second switch unit, another terminal of the th resistor is connected with the output terminal of the signal coding module, and another terminal of the th capacitor is connected to ground.
  6. 6. The locking control system of claim 5, wherein the RC time delay control module further comprises diode, the diode having its anode connected to the power control module and its cathode connected to the second switch unit.
  7. 7. The latch car control system of claim 1, wherein said control feedback module comprises at least diodes.
  8. 8, kinds of lock car control method, characterized by, including:
    the signal coding module acquires a vehicle locking control signal of the microprocessor and codes the vehicle locking control signal;
    the signal coding module outputs the coded signal to the RC delay control module, and the RC delay control module controls the second switch unit after carrying out delay filtering on the coded signal;
    the second switch unit outputs a control voltage according to the coding signal;
    the control feedback module collects the output control voltage and detects whether the output is abnormal.
  9. 9. The vehicle locking control method according to claim 8, wherein the signal encoding module encodes the vehicle locking control signal and filters the vehicle locking control signal with all 0 and all 1 encoding.
  10. 10. The lock vehicle control method according to claim 8, further comprising:
    the power control module acquires a vehicle locking control signal of the microprocessor, controls the th switch unit according to the vehicle locking control signal, and the th switch unit is electrically connected with the second switch unit.
CN201610069694.3A 2016-02-01 2016-02-01 Vehicle locking control system and method Active CN107021067B (en)

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2205863Y (en) * 1994-12-03 1995-08-23 吴远彪 Controller for door lock of automobile
CN2310386Y (en) * 1997-05-21 1999-03-10 大连机车车辆厂 Electronic control relay
DE102012007835A1 (en) * 2012-04-19 2013-10-24 Audi Ag Motor vehicle and method relating to switching off a drive device of the motor vehicle
TW201536606A (en) * 2014-03-31 2015-10-01 Hon Hai Prec Ind Co Ltd Control system and control method for vehicle
CN204046252U (en) * 2014-07-30 2014-12-24 广东高标电子科技有限公司 Power supply circuits and electric motor car

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