KR20190117305A - Start-up control system to prevent drunk driving - Google Patents

Abstract

The present invention relates to a start-up control system to prevent drunk driving, which prevents drunk driving by measuring blood alcohol concentration of a driver before starting up a vehicle to block starting when the concentration exceeds a reference value, and improves operation reliability through speed control by means of periodic measurement during driving and a precise measurement structure.

Description

Start-up control system to prevent drunk driving

The present invention relates to a starting control system of a vehicle, and in detail, by measuring the blood alcohol concentration of the driver before starting the vehicle to prevent the start of alcohol drinking by blocking the start when the reference is exceeded, but the speed control through the periodic measurement during driving and precise measurement structure The present invention relates to a start control system for preventing drunk driving with improved operational reliability.

The law stipulates that as a driver, no one should drive a car while intoxicated, and as a standard, regulates criminal law such as fines or imprisonment and suspension or cancellation of licenses with specific blood alcohol levels. Is provided.

In addition, when there is a significant reason for the police officials to admit that they are necessary to prevent traffic safety and danger, or that they drove a car, etc. while being intoxicated, they may measure whether the driver has been drunk by respiratory investigation. The government has stated that it should respond, and regular and sudden drinking crackdowns are taking place.

However, most vehicles are designed so that anyone can drive with a ignition key, so the driver can start and drive without any sanction even when the driver is intoxicated. As the number of vehicles increases year by year, the frequency of drunk driving and accidents also increases.

Since drunk driving can cause fatal thoughts not only to the driver but also to others, the law has recently been tightened, including punishment of passengers and assistants. .

In recent years, the alcohol interlock device has been researched and developed to prevent drunk drivers from driving, and there is a movement to legalize its mandatory application in developed countries such as North America, Europe and Japan.

The alcohol interlock device is basically a device that prevents the vehicle from starting when an alcohol component is detected in the driver's breath, and it is difficult to recognize the direction when the window of the vehicle is opened in the external windy weather, and it is difficult to recognize the direction. Not only cannot be performed, additional authentication and control during driving of the vehicle is practically difficult, and thus there is a problem that it cannot provide such a function. In other words, if the alcohol is not detected only during the first drunk driving authentication before driving, the vehicle is started. Therefore, there is a limit that is difficult to sanction even if the drunk driver boards after starting.

Publication No. 10-2017-0040890 (April 14, 2017)

The present invention was created to solve the above problems, the object of the present invention is to measure the driver's drinking from time to time during the drive from before driving and to control the start or speed of the vehicle so that only non-drinkers can operate normally. It is to provide a starting control system for preventing drunk driving with improved operational reliability.

In order to achieve the above object, the present invention provides a starter control system having a relay connected to a starter motor wiring part of a vehicle to control energization, an intake part for inhaling exhalation of external air and a user through an intake pump, and ethanol. A terminal comprising a gas sensor configured to calculate a blood alcohol concentration through air supplied to the intake unit, and a request unit requesting a user to measure alcohol consumption; A start control unit for requesting a drinking measurement through the request unit before starting the vehicle and blocking the relay when a blood alcohol concentration above a set value is measured or when the set time is not met; Requests alcohol measurement through the request unit 114 at a set period during vehicle operation, but when the blood alcohol concentration above the set value is measured or when the set time is not met, the vehicle speed is reduced by reducing the fuel injection amount at the same accelerator pedal angle in connection with the ECU and the accelerator pedal. Operation control unit for controlling the deceleration according to the setting step; Characterized in that consists of.

At this time, the terminal is a second sensor unit consisting of a temperature sensor and a pressure sensor for measuring the temperature and pressure of the air sucked through the intake unit, and the change analysis of the measured value of the second sensor unit in the activated state of the first sensor unit It is preferable to further include a determination unit for determining whether or not through the drinking measurement response.

The terminal may further include a preheating unit for preheating the first sensor unit and the second sensor unit for a preset time before activation of the first sensor unit, and operating the intake pump and preactivating a second sensor unit during the first setting time after preheating. Preferably, the timer unit further includes a timer for activating the first sensor unit during the second preset time period.

In addition, the operation control unit is a storage unit for setting and storing the time interval and step-by-step speed reduction ratio according to the angle and fuel injection amount of the accelerator pedal, in connection with the ECU and the accelerator pedal when the blood alcohol concentration above the set value is measured or when the set time is not responded It is preferable that the vehicle is configured to reduce the vehicle speed according to the setting of the storage unit, and a limiting unit for applying the alcohol measurement request and the step-down deceleration ratio as a setting cycle, and a normalizing unit for normalizing the decelerated speed when the blood alcohol concentration above the set value is measured.

In addition, the first sensor unit and the second sensor unit to switch to the test mode, generating a scan signal and applying a scan signal after collecting the response signal as a result value, and analyzing the results of the scan unit to determine the connection state and abnormal state And a failure detection unit for applying a reference signal to the connection unit of the terminal and the ECU and receiving a result signal corresponding to the reference signal, and comparing and analyzing the result signal over time to determine damage or unauthorized change. Self-diagnostics; It is preferable to further include.

According to the present invention, when the driver detects an alcohol component during breathing before starting the vehicle after drinking, the engine is blocked, and while driving, the driver periodically measures the drinking state of the driver and controls the speed and the driving of the vehicle, thereby controlling drinking. The car accident can be prevented in advance. This can greatly contribute to reducing the physical, mental, economic and social losses of drunk driving accidents.

1 is a block diagram showing a configuration and a connection relationship according to an embodiment of the present invention;
2 is a conceptual diagram schematically showing an internal configuration of a terminal of the present invention;
3 is a conceptual diagram schematically showing the internal configuration of the ECU of the present invention;
4 is a schematic circuit diagram according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the start control system for preventing drunk driving of the present invention.

1 is a block diagram showing the configuration and connection relationship according to an embodiment of the present invention, Figure 2 is a schematic diagram showing the internal configuration of the terminal of the present invention, Figure 3 is a schematic diagram showing the internal configuration of the ECU of the present invention, 4 is a schematic circuit diagram according to an embodiment of the present invention.

In order to prevent drunk driving, the present invention is divided into a terminal portion 110 for controlling a driver's drinking and a vehicle portion for controlling a vehicle as shown in FIG. 2. Specifically, interlocking with the ECU 10 is made so as to control the starting and running speed of the vehicle, and basically, it is important to block the drinker's driving of the vehicle, thereby supplying power to the starting motor 20 for starting the vehicle. It is connected to the wiring portion is provided with a relay 30 for controlling the energization. In a more detailed configuration, the main control unit 120 includes a main control unit 120, a driving control unit 130, and a self-diagnosis unit.

The terminal 110 is installed near the driver's seat in order to measure the alcohol consumption before the vehicle is started and during the driving of the driver so that the user can easily grasp, the start control unit 120 and the operation control unit 130 which is a vehicle part. And may be connected in a wired manner or, if necessary, can be configured to enable wireless communication with the vehicle portion, in detail the intake pump 111, the intake 112, the first sensor 113, The request unit 114, the second sensor unit 115, the determination unit 116, the preheating unit 117, and the detailed configuration of the timer unit 118 are provided.

The intake portion 112 is provided with a mouthpiece that is close to the user's mouth in a configuration for sucking the outside air and the exhalation of the user through the intake pump 111. As will be described in detail later, in the existing breath measurement method, the user intentionally needs to blow out the breath strongly toward the mouthpiece. If the blowing force is weak, a smooth measurement cannot be made. On the other hand, in the present invention, even if the force to blow as the air is sucked through the mouthpiece through the intake pump 111 is configured to be able to make a smooth measurement.

The first sensor unit 113 is composed of an ethanol gas sensor to calculate the blood alcohol concentration (BAC) through the air supplied to the intake unit (112). That is, by using the ethanol gas sensor to measure the respiratory alcohol concentration (BrAC), which is the amount of ethanol present in the respiration, the blood alcohol concentration is calculated by converting the measured BrAC into BAC.

The request unit 114 is a configuration for requesting the user to measure the alcohol, by using a visual and auditory manner to require a measurement before and after the driver's boarding periodically during driving. In particular, it may be difficult to recognize the visual notification while driving, so it is desirable to request the voice notification.

The second sensor unit 115 is a temperature sensor for measuring the temperature and pressure of the intake air as a configuration for distinguishing whether the air sucked through the intake unit 112 is air caused by a driver's exhalation or a simple draft And a pressure sensor, and continuously measure the temperature and pressure of the air sucked in during the operation time of the intake pump 111 and temporarily store the change in time.

The determination unit 116 is configured to determine whether or not the alcohol measurement response by analyzing the change of the measurement value of the second sensor unit 115 in the activated state of the first sensor unit 113, the air is inhaled and alcohol If the temperature and pressure rise above the reference value is not observed during the concentration measurement, it is determined that the driver does not breathe normally and through the request unit 114 until it is determined that the measurement is normally answered. You will be asked to measure.

The preheating unit 117 is a configuration corresponding to a compact electric heater for preheating the first sensor unit 113 and the second sensor unit 115 during a set time before activation of the first sensor unit 113. In general, the operating temperature of the ethanol gas sensor for measuring BAC is -10 ~ 70 ℃, but the reliability cannot be guaranteed in the low temperature environment in winter, and it is due to the moisture contained in the driver's exhalation or freezing of residual moisture inside. Errors are likely to occur.

Therefore, the preheating unit 117 before the drinking measurement by preheating the first sensor unit 113 and the second sensor unit 115 it is possible to ensure the accuracy of the measurement results. At this time, the preheating time should be as short as a few seconds, because the performance of the sensor deteriorates when the preheating continues for more than a certain time due to the characteristics of the sensor provided, it is necessary to set the time so that it can be preheated only during measurement.

To this end, a measurement button is provided to allow the user to press by hand to start the measurement on the outside of the terminal 110 so that the sensor can be preheated by pressing a button before the measurement and after the set time, the intake pump 111 and the first It is preferable to enable smooth measurement by activating the sensor unit 113 and the second sensor unit 115.

The timer unit 118 is literally a timer circuit, and operates the intake pump 111 and activates the second sensor unit 115 during the first set time after preheating through the preheater 117. The first sensor unit 113 is activated during the second setting time of the setting time.

Various time settings are possible, and preferably, the operation time of the preheating unit 117 is about 10 seconds while the suction is performed during the first setting time for 5 seconds through the operation of the intake pump 111. It activates, and activates the first sensor unit 113 in the second set time of the middle 2 to 3 seconds interval can be set to make the measurement.

In addition, the display unit capable of displaying the operating state and the BAC measurement value of the terminal 110 and the ECU 10 on the outside of the terminal 110, and the LED that can display the operating state, such as Ready, Pass, Lock, Error It may be provided. In other words, when ready lamp is 'OFF', it is not measured and 'ON' is ready for measurement. In addition, the pass lamp is 'ON' when the measurement is completed normally and the BAC is less than 0.02% to indicate that the measurement was made normally. In addition, the lock lamp is 'OFF' when the measurement is completed normally and the pass is passed, and the error lamp is 'ON' when there is a problem with the device or other problem.

In addition, the display unit displays the BAC% value display and other error value displays numerically, and can display the BAC% value in 0.01% units, such as 0.00 to 0.35, during measurement. In addition, any error code can be displayed when an error occurs.

The starter control unit 120 is configured to control the start-up before the vehicle starts after boarding the driver to request a drinking measurement through the request unit 114, the blood alcohol concentration of the measurement result or more than the set value is measured or the set time does not correspond to the relay ( 30) will be blocked. As mentioned above, the power supply wiring of the starting motor 20 is basically controlled, and the same effect can be obtained by controlling the ignition system, but it is not preferable for safety while driving.

The driving control unit 130 requests the alcohol measurement through the request unit 114 at a set period during the vehicle driving, when the blood alcohol concentration above the set value is measured or when the set time is not met, the vehicle speed is linked with the ECU 10 and the accelerator pedal. It is a configuration to control the deceleration by setting step.

That is, the driver who is in a drunk state through the start control unit 120 may prevent the drunk driving by blocking the start according to the drunk measurement result when boarding, but in the state of starting the drunk after starting the drunk measurement through another person who has not drunk other than the driver There is a problem that drunk drivers can grab the steering wheel. Therefore, in the present invention, it is possible to block the above-mentioned problem by measuring the alcohol at any time at a set cycle even while driving, not the alcohol measurement limited to the first one.

At this time, unlike the start control unit, the operation control unit 130 is already started and stops driving during the operation of the vehicle, and the speed of the vehicle in connection with the ECU 10 and the accelerator pedal is not immediately stopped for safety. By decelerating control step by step to prevent the collision with the subsequent vehicle. That is, the speed of the vehicle is basically determined by the amount of fuel injected according to the driver's accelerator pedal operation, so if there is a drunk driving sign, the amount of fuel injected is reduced even at the same accelerator pedal angle so that the speed does not come out normally.

In the present invention, the driving control unit has a detailed configuration of the storage unit 131, the limiting unit 132, and the normalization unit 133 for this specific deceleration control.

The storage unit 131 is a memory configuration in which time intervals and step-by-step speed reduction ratios are set and stored in correspondence with fuel amount according to an accelerator pedal angle, and may be differentially applied by reflecting a driving period and a vehicle model of the vehicle. For example, in a commercial vehicle in which the present invention is considered to be subject to first application, a vehicle with a slow average speed and frequent stops, such as a city bus, may have a shorter time interval for requesting measurement and a smaller step reduction rate. On the other hand, in the case of trucks operating on highways, the time reduction can be operated in a manner that increases the speed reduction ratio step by step.

At this time, as described above, the fuel injection amount for deceleration for each angular section of the accelerator pedal is set in conjunction with the ECU 10, so that even when the user presses the accelerator pedal, the fuel amount according to the setting is not reduced and speed is inconvenient to operate. This allows them to respond to alcohol measurement while creating a relatively safe situation in case of an accident.

The limiting unit 132 is configured to reduce the vehicle speed in association with the ECU 10 and the accelerator pedal when the blood alcohol concentration above the set value is measured or does not correspond to the set time, but applies the alcohol measurement request and the step-down deceleration rate at a set cycle. In other words, according to the first measurement request during operation, the first step is decelerated, then the second measurement request is made after a certain time, and the second step is decelerated if not responded again. The amount of fuel reduction according to the accelerator pedal angle range is reflected.

The normalizing unit 133 is configured to normalize the decelerated speed when the blood alcohol concentration above the set value is measured, and again when it is determined that the drinking state is not in response to the measurement in the decelerated state of the vehicle through the limiting unit 132. Can return to normal speed.

 In addition, if it is determined that alcohol is not measured in the first measurement, but not in response, the limiting unit 132 may apply a method of decelerating the speed to a greater extent or stopping the vehicle in stages without remeasurement.

The self-diagnosis unit 140 ensures safety by determining whether the user acts intentionally such as remodeling or incapacitating the system, including whether or not normal operation such as unintended failure or damage throughout the system according to the present invention. In order to support this, a detailed configuration of the scan unit 141, the abnormality detection unit 142, and the damage detection unit 143 is provided.

The scan unit 141 switches the first sensor unit 113 and the second sensor unit 115 to the test mode, generates and applies a scan signal, and collects a response signal as a result value.

The abnormality detection unit 142 is configured to determine a connection state and an abnormal state by analyzing the result of the scan unit 141, and the first sensor unit in response to a scan signal for a test mode through the scan unit 141. Through the response signals generated from the 113 and the second sensor unit 115, it is possible to check whether each sensor unit is normally operating, and thereby determine the overall connection state and normal operation of the terminal.

The breakage detecting unit 143 applies a reference signal to the connection unit of the terminal 110 and the ECU 10 and receives a result signal corresponding to the reference signal, but compares and analyzes the result signal according to time and is broken or unauthorized. It is a configuration for judging a change. If it is possible to check the state of the terminal 110 through the above-described scan unit 141 and the abnormality detection unit 142 can determine whether the vehicle portion is normal through the damage detection unit 143, ECU 10 In addition, the reference signal is applied to the circuits of the starter control unit 120 and the operation control unit 130 including the relay 30 connected to the starter motor 20 wiring part, and the resultant signal corresponding to the reference signal is received and the result is compared with the set value. Therefore, it is possible to determine the abnormality including damage or modification through impedance change.

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and those skilled in the art can make various modifications and adaptations within the scope of the claims. It is self-evident.

10: ECU 20: starting motor
30: relay 110: terminal
111: intake pump 112: intake section
113: first sensor unit 114: request unit
115: second sensor unit 116: determination unit
117: preheating unit 118: timer unit
120: start control unit 130: driving control unit
131: storage unit 132: restriction unit
133: normalization unit 140: self-diagnosis unit
141: scan unit 142: abnormality detection unit
143: damage detection unit

Claims (5)

In the start control system having a relay 30 connected to the start motor 20 of the vehicle to control the energization,
The first sensor unit for calculating the blood alcohol concentration through the air supplied to the intake unit 112 and the intake unit 112 and the ethanol gas sensor to suck the exhalation of the outside air and the user through the intake pump 111 A terminal 110 having a request unit 114 for requesting a user to measure alcohol consumption;
A start control unit 120 for requesting a drinking measurement through the request unit 114 before starting the vehicle and blocking the relay when a blood alcohol concentration above a set value is measured or when the set time is not met;
Requests alcohol measurement through the request unit 114 at a set cycle during vehicle operation, but reduces the amount of fuel injection at the same accelerator pedal angle in connection with the ECU 10 and the accelerator pedal when the blood alcohol concentration above the set value is measured or when the set time is not met. A driving control unit 130 for decelerating and controlling the vehicle speed according to a setting step; Starting control system for preventing drunk driving, characterized in that consisting of.
The method of claim 1,
The terminal 110 includes a second sensor unit 115 including a temperature sensor and a pressure sensor for measuring a temperature and a pressure of air sucked through the intake unit 112, and the first sensor unit 113. Starting control system for preventing drunk driving, characterized in that it further comprises a determination unit (116) for determining whether the drinking measurement response by analyzing the change of the measured value of the second sensor unit 115 in the activated state.
The method of claim 2,
The terminal 110 is a preheating unit 117 for preheating the first sensor unit 113 and the second sensor unit 115 during the set time before activation of the first sensor unit 113, and the first setting after preheating It further includes a timer unit 118 to operate the intake pump 111 for the time and to activate the second sensor unit 115, but to activate the first sensor unit 113 during the second set time of the first set time. Starting control system for preventing drunk driving, characterized in that.
The method of claim 1,
The driving controller 130 is a storage unit 131 in which time intervals and step-by-step speed reduction ratios are set and stored according to the angle of the accelerator pedal and the fuel injection amount, and the blood alcohol concentration above the set value is measured or the ECU does not correspond to the set time. And a limiting unit 132 for depressing the vehicle speed according to the setting of the storage unit 131 in association with the accelerator pedal and applying the alcohol measurement request and the step-down deceleration rate at a set cycle, and when the blood alcohol concentration above the set value is measured. Starting control system for preventing drunk driving, characterized in that consisting of a normalization unit 133 to normalize the reduced speed.
The method of claim 2,
A scan unit 141 for converting the first sensor unit 113 and the second sensor unit 115 into a test mode, generating and applying a scan signal, and collecting a response signal as a result; and the scan unit 141 The abnormality detection unit 142 for determining a connection state and an abnormal state by analyzing the result value of the signal, and applying a reference signal to the connection unit of the terminal 110 and the ECU 10 and receiving a result signal corresponding to the reference signal A self-diagnosis unit 140 including a breakage detection unit 143 which compares and analyzes signals over time to determine breakage or unauthorized changes; Starting control system for preventing drunk driving, further comprising a.

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