KR20170007508A - Apparatus preventing sudden unintended acceleration and malfunction using controling reverse current in surreounding circuit of vehicle - Google Patents

Abstract

An apparatus for preventing the sudden acceleration and malfunction of a vehicle. The apparatus includes a first unit including at least one of the vehicle control devices, a second unit connected to the first unit and integrally controlling the vehicle control device, and an external connector to which the electronic product used by the driver is connected, An insulating portion for rectifying the current from the first unit or the second unit toward the external connector is connected between the first unit and the external connector or between the second unit and the external connector. According to the present invention, stability can be secured against sudden acceleration or malfunction of a vehicle.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for preventing a sudden stoppage of an automobile,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for preventing a malfunction of an automobile control circuit module and a peripheral circuit. More particularly, the present invention relates to a method for securing stability against errors such as a sudden start of a peripheral circuit when driving.

In the past, some automakers' suspicions of sudden emergencies in their vehicles have often arisen. Many sensors and electronic equipment were introduced to automobiles, and it was not possible to confirm whether the specific equipment was malfunctioning, but malfunctions of which the cause was unknown were continuously generated. For example, after the vehicle has been locked, the door lock is released by itself, the handle of the car is shaken up and down, or the driver's seat is moved back and forth. Also, the setting values of the body control module (BCM) of the vehicle were changed regardless of the user's intention.

It is pointed out that a power outlet terminal is installed to use electronic equipment in the driver's seat or rear seat of a car. If a product requiring high power such as a black box or a mobile phone charger is connected, electric current may flow into the vehicle from the electronic device . That is, the possibility of occurrence of a reverse current phenomenon was expected. If the user connects the electronic device to the power outlet terminal even when the vehicle is turned off, current flows from a high voltage to a low voltage, so that a reverse current may flow to the vehicle electronic control device. In particular, in the case of a taxi vehicle, a number of external devices, such as a charge meter, a card dispenser, or a navigation device, are often connected to a vehicle power outlet through arbitrary wiring processing. At this time, it is expected that there is a possibility that an accident such as a sudden lightning may occur due to a malfunction of the vehicle control device (for example, ECU or BCM).

However, it is an unreasonable limitation to prevent users from using electronic devices such as a mobile phone charger, a navigation device, and a black box in a car, and a device for preventing sudden emergence and malfunction by controlling reverse current is required.

An object of the present invention is to provide a device for preventing a sudden start and a malfunction due to an electrical error between a vehicle control device and an electronic device.

Another object of the present invention is to provide a device for preventing the sudden start or malfunction of a vehicle due to the reverse supply of the battery current to an automobile which is not started when charging an electronic product with a built-in battery using an automobile power source .

According to one aspect of the present invention, an automobile idling prevention and malfunction prevention apparatus includes a first unit that includes at least one of the vehicle control devices, a second unit that is connected to the first unit and integrally controls the vehicle control device, And an insulating part for rectifying a current from the first unit or the second unit toward the external connector is connected between the first unit and the external connector or between the second unit and the external connector.

According to another aspect of the present invention, there is provided an apparatus for preventing sudden driving and malfunction of a vehicle, including a monitoring unit for detecting a state of the vehicle, a vehicle control device for controlling an automobile gearbox, a brake or an engine based on the monitored state of the vehicle, And an output connector portion in the form of a power outlet terminal for supplying electric power to the device, and an insulation portion for blocking current or noise flowing from the output connector portion to the monitoring portion and the output connector portion or between the vehicle control device and the output connector portion is connected .

According to another aspect of the present invention, when charging an electronic product having a built-in battery by using an automobile power source, the insulation portion prevents a vehicle suddenly emerging due to a reverse current of the battery being supplied to an automobile which is not started.

According to the present invention, stability can be secured against sudden acceleration or malfunction of a vehicle.

Industrial Applicability According to the present invention, when an electronic product is used using a vehicle power source, the influence on the interior of the vehicle can be minimized.

FIG. 1 shows an example of a vehicle rapid acceleration and malfunction prevention device according to the present invention.
2 shows an example of a current monitoring unit applied to the present invention.
3 shows an example of a voltage monitoring unit applied to the present invention.
4 shows an example of a power supply unit according to the present invention.
Figs. 5, 6 and 7 show still another example of a vehicle sudden stop and malfunction prevention device according to the present invention.
FIG. 8 shows an example of a functional block diagram of the ADM3052 applied to the present invention.
9 shows an example of a functional block diagram of ADuM4470, ADuM4471, ADuM4472, ADuM4473 and ADuM4474 applied to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Also, in order to clearly illustrate the present invention in the drawings, portions not related to the present invention are omitted, and the same or similar reference numerals denote the same or similar components.

The objects and effects of the present invention can be understood or clarified naturally by the following description, and the objects and effects of the present invention are not limited only by the following description.

The objects, features and advantages of the present invention will become more apparent from the following detailed description. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The vehicle may be equipped with an electronic automatic control device. For example, the control device is connected to a wiper, an airbag, a power window, a power seat, a key, a lamp, and the like.

Automatic control devices are essential for automotive intelligence. Typically, there is a light control technique in which a light is automatically turned off when a car door is closed. Alternatively, there is a technique in which the rain sensor recognizes the precipitation or the precipitation and automatically adjusts the operating speed of the wiper.

An automatic control device can be understood as a small computer that controls and manages the main assembly of an automobile. More than 100 automatic control devices are applied to a single vehicle, and a digital information system (DIS) is applied to the vehicle, and each control device is dispersed according to a desired function.

Examples of frequently used automatic control devices and examples of major functions are shown in Table 1 below. Hereinafter, the term "automatic control device" refers to at least one of the control devices in Table 1.

FIG. 1 shows an example of a vehicle rapid acceleration and malfunction prevention device according to the present invention.

Referring to FIG. 1, a vehicle suddenly stopping and preventing device 100 includes a current monitoring unit 120 for monitoring the amount and direction of current flowing through an input connector 110 connected to a power source of a vehicle, A voltage monitoring unit 130 monitoring the magnitude of a voltage applied to the input connector unit or the output connector unit, a weight monitoring unit 150 sensing whether the driver is seated or not, a pedal monitoring unit A control unit 170 for controlling the vehicle gear box, the brake, and the engine based on signals transmitted from at least one of the plurality of monitoring units 120, 130, 140, 150, and 160, And a display unit 180 for displaying the control status of the display unit 170. [ The vehicle suddenly and malfunction prevention apparatus 100 supplies power of the vehicle through the input connector unit 110 or outputs the power through the monitoring units 120, 130, 140, 150, and 160 so that the controller 170 can operate. And a power supply unit 190 for interrupting or supplying an electrical signal to the connector unit 195.

Particularly, in the vehicle sudden driving and malfunction prevention device 100, the insulating part 198 is connected between the input connector part 110 and the power supply part 190, or the insulating part 199 is connected to at least one of the monitoring parts 120, 130, 140, Output connector portion 195, as shown in FIG. At this time, the insulation units 198 and 199 protect the control circuit of the vehicle and the electronic appliances of the user from the electric shock from the input connector unit 110 or the output connector unit 195 and noise introduced through the power source of the vehicle. In other words, the insulation units 198 and 199 separate the signals between the control circuit of the vehicle and the user's electronic product to prevent the signals from affecting each other. The insulation units 198 and 199 prevent electric shock (for example, And each of the user's electronic products. Accordingly, when the driver of the automobile equipped with the automatic gear shifts the gear box in the drive state and gets off, or when the driver leaves the vehicle door with the car door open, the monitoring unit 120, 130, 140, 150, It is possible to prevent accidents that may occur when getting off. Alternatively, the insulating portions 198 and 199 can prevent a malfunction of the automobile electronic circuit due to an electrical error such as a reverse current of the electronic product.

As another example, the insulating portion 199 connected between the power supply portion 190 and the output connector portion 195 blocks the reverse current that may flow from the output connector portion 195.

As another example, an insulated portion (e.g., a diode) is included in the power supply portion 190 to prevent a reverse current flowing from the output connector portion 195 itself from being transmitted to the input connector portion 110.

On the other hand, the control unit 170 grasps the state of the vehicle from the monitoring signals transmitted from the monitoring units 120, 130, 140, 150 and 160, performs appropriate operations for each state, and transmits a control signal to the vehicle automatic control apparatus through the signal output unit 175 do.

In addition, the controller 170 transmits data indicating the current state and operation state of the vehicle to the display unit 180. [ The display unit 180 receives data on the current state and the operation state from the controller 170 and displays the data to the user.

The control unit 170 determines vehicle driving conditions through signals transmitted from the monitoring units 120, 130, 140, 150, and 160, and transmits the determined vehicle driving conditions to an automobile control electronic circuit (e.g., ECU, BCM, etc.). Alternatively, the control unit 170 may include an automobile control electronic circuit (e.g., an ECU or BCM), that is, a vehicle control apparatus. Hereinafter, the control unit 170 may refer to a vehicle control device.

For example, a vehicle driving condition (or a normal driving condition) determined by the control unit 170 may be determined based on at least one of the following conditions in Table 2.

Referring to Table 2, for example, the controller 170 may control the vehicle to run when the first to fourth conditions are all satisfied. As another example, the control unit 170 can control to stop the automobile if the third condition is satisfied but the first condition and the second condition are not satisfied. As another example, the control unit 170 may control to stop the automobile if the fourth condition is satisfied but the first condition and the second condition are not satisfied.

The monitoring units 120, 130, 140, 150 and 160 include a current monitoring unit 120, a voltage monitoring unit 130, a pedal monitoring unit 140, a weight sensing unit 150 or a door monitoring unit 160, The weight of the pedal, and the state of the door. For example, the current monitoring unit 120 transmits to the controller 170 data indicating the amount of the current flowing to the output connector unit 195 through the input connector unit 110 and the flow direction of the current. In another example, the voltage monitoring unit 130 measures a magnitude and a variation amount of a voltage input through the input connector unit 110, and transmits data to the controller 170 to determine the overvoltage and the undervoltage. That is, the current monitoring unit 120 and the voltage monitoring unit 130 continuously monitor the voltage of the automobile battery, and can sense the overvoltage and the undervoltage, so that the automobile battery can be discharged in advance. As another example, the pedal monitoring unit 140 monitors the operation of the accelerator pedal and the brake pedal of the vehicle, and transmits the measured data to the controller 170. In another example, the weight sensing unit 150 measures the weight of the driver's seat and transmits the measured weight to the control unit 170. [ As another example, the door monitoring unit 160 transmits data monitoring the door open / closed status of the vehicle to the control unit 170. [

2 shows an example of a current monitoring unit applied to the present invention.

2, a current sensing resistor 220 and an OP AMP 240 are connected between an input current 210 and an output current 230 and a NOISE FILTER 250 is connected to an output terminal of the OP AMP 240. [ And outputs the measurement data 260. That is, the current monitoring unit 120 can measure the amount or direction of the current flowing through the current sensing resistor through the Ohm's law, converts the detected amount of current into a voltage value, And noise is removed by a NOISE FILTER to obtain output data, and this value is transmitted to the control unit

3 shows an example of a voltage monitoring unit applied to the present invention.

3, a voltage distribution resistor 320 is connected to the input voltage 310, a NOISE filter 330 is connected to the voltage distribution resistor 320, an analog to digital converter (ADC) 330 is connected to the NOISE FILTER 330, And 340 are connected to output the measurement data 350. The voltage monitoring unit 130 distributes the input voltage 310 to the voltage dividing resistor 320 and the NOISE FILTER 330, that is, the two resistors, and the divided input voltage 310 reduces the measured voltage At the same time, noise and ripple are removed through a NOISE FILTER 330, that is, a capacitor, and measurement data converted into an analog-to-digital converter is obtained, and this value is transmitted to the control unit.

In addition, the weight monitor 140 may be a sensor capable of measuring the weight of the driver's seat on a driver's seat. The sensor may be provided on the driver's seat so as to measure the weight applied to the driver's seat. To the controller (170).

The pedal monitoring unit 150 according to the present invention continuously monitors whether or not the accelerator pedal, the brake pedal, and the gear bar of the vehicle operate, and transmits the status information obtained through the monitoring to the controller 170.

Which is a sensor mounted on an automobile door of a door monitoring unit 160 applied to the present invention, measures a closed or open state of the door, and transmits the measured door state information to the controller 170. [

The power supply unit 190 supplies the vehicle power to the control unit through the input connector unit 110 and the output connector unit 195 through the monitoring unit 120, 130, 140, 150, Or the electric signal to be connected to the power source.

The output connector portion 195 may be configured in the form of a power outlet terminal such as a cigar jack in a vehicle, and may supply vehicle power to the user's electronic product. Alternatively, the power supply unit 190 may connect the external electronic product to the vehicle power.

5 shows still another example of a vehicle sudden stop and malfunction prevention device according to the present invention.

5, a diode 540 is connected between the vehicle battery 510 or the vehicle control device 530 and the external connector 550. [ As an example, a fuse box 520 may further be connected between the vehicle battery, the diode, and the vehicle control device.

Fig. 6 shows another example of an automobile suddenly stopping and malfunction prevention apparatus according to the present invention.

6, a field effect transistor or a solid state relay (SSR) 640 or a relay is connected between the vehicle battery 610 or the vehicle control unit 630 and the external connector 650. As an example, a fuse box 620 may be further connected between the vehicle battery, the diode, and the vehicle control device.

Another object of the present invention is to provide an OBD for detecting a vehicle condition, which may malfunction a control device due to a reverse current, so that the OBD and the vehicle control device (e.g. ECU or BCM) A diode is installed.

In another example of a vehicle rapid acceleration and malfunction prevention device according to the present invention, a diode or an FET or SSR is connected between a vehicle battery and a vehicle control device. The diode or the FET or the SSR serves as an insulating part so that a reverse current can be prevented from flowing to the vehicle control device.

Fig. 7 shows another example of a vehicle rapid acceleration and malfunction prevention device according to the present invention.

Referring to FIG. 7, the vehicle sudden driving and malfunction prevention device includes a first unit 710 including at least one of the vehicle control devices, a second unit 710 connected to the vehicle control device, A second unit 720, and an external connector 730 for connecting electronic products used by the driver.

At this time, an insulating portion 740 (e.g., diode or FET or SSR or relay) that rectifies current from the first unit 710 or the second unit 720 in the direction of the external connector is connected to the units 710 and 720, (Not shown).

As an example, the insulating portion 740 may be a controller area network (CAN) communication isolation device that is widely used in automobiles. For example, there is an ADM3052, and an example of a functional block diagram of the ADM3052 is shown in FIG.

As another example, a device capable of separating power from the insulating portion 740 may be used. For example, there are ADuM4470, ADuM4471, ADuM4472, ADuM4473 and ADuM4474, and an example of a functional block diagram of ADuM4470, ADuM4471, ADuM4472, ADuM4473 and ADuM4474 is shown in FIG.

There are many automatic control devices in the vehicle, and the data is transferred through the interface between these devices (for example, power, communication line, etc.). In this case, it is possible to secure stability more by providing electrical isolation between the connectors (e.g., input connector and output connector) to isolate power noise and electrical errors that may occur in each device.

1 to 7, a diode or the like used as an example of the insulation part serves to advance the current in only one direction. The rectifier diode may be provided to intercept the flow of current from the peripheral device (e.g., a mobile phone charger) to the interior of the vehicle because of possible interference of the vehicle control device (e.g., ECU, BCM, IMS) due to the reverse current.

For example, the rectifier diode can be a 4A diode and can be mounted to the power outlet terminal wiring. Notebook, black box, charger, etc. can be connected to the car through external connector, laptop can deliver current of 3 ~ 4A, black box of 1A, and mobile phone charger of 1 ~ 2A. The diode 4A is only an example, and a larger diode is also possible.

Solid state relays (SSR), MOSFETs, or relays can be used instead of diodes. When a fuse box is connected to the ECU, an SSR or MOSFET or relay is connected between the fuse box and the external connector.

Diodes, SSRs, MOSFETs, relays, etc., block electrical flow from external devices through the power outlet jack and cigar jack when the vehicle is switched off.

In another embodiment according to the present invention, a vehicle control device (e.g., ECU or BCM) may be provided in a form capable of withstanding 3.0V to 8.0V. The free space of the operating voltage of each automatic control device is ensured and safety is secured from the overcurrent or the reverse current. Because the conventional control system uses 3.0V ~ 15V operating voltage, there is a high possibility that the voltage of 3.0V ~ 15V will be applied due to the reverse current through the cigar jack. In this case, even if the vehicle start is turned off, the ECU or BCM malfunctions This can be a cause of the problem. Therefore, the ECU or the BCM can be provided in the vehicle so as to withstand 3.0V to 15.0V.

It will be apparent to those skilled in the art that various modifications, additions and substitutions are possible, without departing from the spirit and scope of the invention as defined by the appended claims. Should be regarded as belonging to the above-mentioned patent claims.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept as defined by the appended claims. But is not limited thereto.

In the above-described exemplary system, the methods are described on the basis of a flowchart as a series of steps or blocks, but the present invention is not limited to the order of the steps, and some steps may occur in different orders . It will also be understood by those skilled in the art that the steps shown in the flowchart are not exclusive and that other steps may be included or that one or more steps in the flowchart may be deleted without affecting the scope of the invention.

Claims (7)

An apparatus for preventing sudden acceleration and malfunction of a vehicle,
A monitoring unit for sensing a state of the vehicle;
A vehicle control device for controlling the vehicle gear box, the brake or the engine based on the monitored state of the vehicle; And
And an output connector portion in the form of a power outlet terminal for supplying power to the user's external electronic device,
An insulating portion for blocking a current or noise flowing from the output connector portion is connected between the monitoring portion and the output connector portion or between the vehicle control device and the output connector portion,
An input connector portion connected to a vehicle power source; And
Further comprising a power supply unit for supplying the vehicle power through the input connector unit so that the vehicle control apparatus can operate,
And the insulation part is connected between the input connector part and the power supply part.
The method according to claim 1,
Wherein the insulation part comprises at least one of a rectifier diode, a field effect transistor (FET), a solid state relay (SSR), and a relay.
The plasma display apparatus of claim 1, wherein the power supply unit
Further comprising a power cut-off unit connected between the input power and the output power and for blocking the connection between the input power and the output power by being turned on / off by the vehicle control device.
The apparatus of claim 1, wherein the monitoring unit
A current monitor for monitoring the amount and direction of current flowing through the input connector;
A voltage monitoring unit monitoring a magnitude of a voltage applied to the input connecting unit or the output connecting unit;
A weight detecting unit for detecting whether or not the driver is seated;
A pedal monitoring unit for monitoring an operation of the accelerator pedal; And
And a door monitoring unit for monitoring whether the vehicle door is open or closed.
An apparatus for preventing sudden acceleration and malfunction of a vehicle,
battery;
A vehicle control device for controlling the vehicle gear box, the brake or the engine based on the state of the vehicle; And
And an external connector in the form of a power outlet terminal for supplying power to the user's external electronic device,
Diode, FET or SSR or relay is connected between the vehicle control device and the external connector.
An apparatus for preventing sudden acceleration and malfunction of a vehicle,
A first unit comprising at least one of the vehicle control devices;
A second unit coupled to the first unit for integrally controlling the vehicle control device; And
And an external connector to which an electronic product used by a driver is connected,
And an insulating portion for rectifying a current from the first unit or the second unit toward the external connector is connected between the first unit and the external connector or between the second unit and the external connector. Prevention device.
7. The apparatus of claim 6, wherein the insulating portion
ADM3052, which is a controller area network (CAN) communication isolation device, or at least one of ADuM4470, ADuM4471, ADuM4472, ADuM4473 and ADuM4474 which are power disconnectable devices.

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