KR20080005667A - Tunnel recognition and control system using bws and method thereof - Google Patents

Abstract

A system for recognizing a tunnel using a BWS(Back Warning Sensor) and a method thereof are provided to improve driver convenience by executing automatically manipulation on the ventilator and small light of vehicles according to the external conditions of the vehicles. A system for recognizing a tunnel using a BWS(Back Warning Sensor) includes plural BWSs(10a-10n), a transmission sensor(30), a control unit(20), motors(12a-12n), vehicle equipments(40), and an alarming unit(50). The BWSs detect objects at rear or upper sides of vehicles by adjusting rotation angle. The transmission sensor detects the state of the transmission of the vehicle. The control unit determines whether the vehicle is in the tunnel based on the state of the transmission and signals from the BWSs, and outputs control signals for controlling a ventilator and a small light when the vehicle is in the tunnel. The motors adjust the rotation angle of the BWSs under control of the control unit. The vehicle equipments include a ventilator(42), a switch(44) for switching the ventilator, and a small light(46). The alarming unit outputs an alarm sound under control of the control unit.

Description

Tunnel Recognition and Control System Using BWS and Method

1 is a block diagram of a tunnel recognition and control system according to the present invention;

2 is a flowchart illustrating a tunnel recognition and control method according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: BWS 12: Control Motor

20: control unit 30: transmission sensor

40: controller 42: FATC

44: internal and external air conversion switch 46: taillight

50: alarm 60: object

The present invention relates to a tunnel recognition and control system using BWS, and more particularly, to a tunnel area using BWS (Back Warning Sensor), which is used as an auxiliary device for safe driving, and automatically measures the corresponding area. The present invention relates to a tunnel recognition and control system using BWS and its method, which can be used for convenience of the driver.

With the continuous development of automobiles, devices for the convenience of users continue to be developed, and in particular, many technologies for improving the correlation between systems that enable various functions through modification and improvement of existing systems are being developed.

On the other hand, the air conditioning system installed for the heating and cooling of the vehicle indoors through the inside and outside air door provided in the front of the vehicle to suck the inside or outside air to supply to the inside of the vehicle.

That is, the bet mode used to prevent the polluted air from outside the vehicle from entering the room or for rapid cooling and heating of the room prevents the inflow of outside air from the front of the vehicle, and the outdoor air mode allows the outside air to flow into the interior of the vehicle. .

In a general road environment, a situation in which a taillight and an outside air conversion are frequently required while driving.

In many mountainous areas, it often passes through dark and air-contaminated tunnel areas.In this case, every time the tunnel area is entered, the air flows into the vehicle interior and the collision with the front and rear cars is prevented. The taillights should be turned on while converting to bet mode, and after passing through the tunnel area, the taillights should be turned off after switching to the outdoor mode again.

However, when driving for a long time, there is a problem in that the internal and external air mode conversion and taillight operation behavior is inconvenient as well as a bad effect on the driver's safe driving.

The present invention has been made to solve the above-described problems, by using the BWS used as an auxiliary device for safe driving to recognize the tunnel area accordingly to facilitate the driver's convenience and safe driving by changing the bet mode and lighting the taillights. The purpose of the present invention is to provide a tunnel recognition and control system using BWS and a method thereof.

Tunnel recognition and control system using a BWS according to the present invention for achieving the above object, a plurality of BWS and the transmission gear position of the vehicle to detect and output the object of the rear or upper by adjusting the rotation angle Transmission sensor for detecting and outputting the reverse (R), neutral (N), forward (D), parking (P) state, the position of the transmission gear output from the transmission sensor, and whether the ultrasonic signal transmitted from the BWS It determines whether it is a tunnel area or not, and if it is determined that it is not a tunnel area, it performs the rear sensing and alarming function. A control unit for outputting, a control motor for respectively adjusting the rotation angle of the BWS by the operation control of the control unit, and an internal and external air conditioner by the control signal of the control unit. And the conversion is made of rear lights are turned off or outside FATC group selection switch and the control points P and detectors for outputting a warning sound by a control signal of the control unit.

In addition, the tunnel recognition and control method using the BWS according to the present invention is a step of determining whether the position of the vehicle transmission gear is backward, and when the position of the transmission gear is backward received from the BWS after transmitting the ultrasonic wave to the rear object Calculating a distance by measuring time, and outputting an alarm sound among various alarms according to the degree of the distance, and adjusting the position of the BWS upward when the position of the transmission gear is not backward. Determining whether it is a tunnel area according to whether it is received or not, if it is determined that the tunnel area is selected, switching from an outdoor mode to a bet mode and lighting a taillight, and determining that the tunnel area is not. If the previous judgment state is a tunnel area, the process includes switching from bet mode to outside mode and turning off the tail light. .

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a tunnel recognition and control system according to the present invention.

As shown, a plurality of BWSs 10a, 10b, ..., 10n and their control motors 12a, 12b, ..., 12n, a control unit 20, a transmission sensor 30, and a controller 40 ) And an alarm 50.

The BWS is originally attached to the rear bumper or the front bumper of the vehicle to compensate for the driver's lack of awareness of the rear object when parking or reversing, and uses an ultrasonic characteristic to detect obstacles in the rear view blind spot behind the vehicle. Auxiliary operation device that warns

In the present invention, the BWS (10a, 10b, ..., 10n) is the rotation angle is adjusted to detect not only the rear but also the upper object 60 and outputs to the control unit 20.

Transmission sensor 30 detects whether the position of the transmission gear is reverse (R), neutral (N), forward (D), parking (P) state and outputs to the control unit 20.

The control unit 20 controls the operation of the control motors 12a, 12b, ..., 12n according to the gear position of the transmission output from the transmission sensor 30 to adjust the rotation angle of the BWS 10a, 10b, ..., 10n. Adjust

That is, the control unit 20 controls the operation of the control motor 12a, 12b, ..., 12n so that the BWS (10a, 10b, ..., 10n) to the rear when the transmission gear position is in the reverse state, and reverse The control motors 12a, 12b, ..., 12n are controlled to face upward when not in a state.

The control motors 12a, 12b, ..., 12n control the BWSs 10a, 10b, ... by adjusting the angle so that the BWSs 10a, 10b, ..., 10n face backward or upward by the operation control of the control unit 20. 10n) can detect the object 60 behind or above the vehicle.

In the present invention, the control motors (12a, 12b, ..., 12n) is preferably a step motor that rotates by a predetermined angle unit in accordance with the input pulse.

In addition, the control unit 20 determines whether or not the tunnel area according to the position of the transmission gear output from the transmission sensor 30 and the reception of the ultrasonic signal transmitted from the BWS (10a, 10b, ..., 10n), If it is determined that it is not a tunnel area, the distance is calculated and the alarm sound is output differently according to the degree of the distance.

That is, BWS ((10a, 10b, ..., 10n) transmits the ultrasonic wave to the rear object 60, and then calculates the distance by measuring the time when the ultrasonic wave hits the object 60 and returns.

At this time, the transmission speed (v) of the ultrasonic waves in the air is represented by Equation 1, and the distance (D) is calculated by Equation 2 using the speed (v) and the travel time (T) of the ultrasonic waves.

[Equation 1]

Where t is the atmospheric temperature.

[Equation 2]

The control unit 20 calculates the distance D by the above-described method and outputs an alarm sound of any one of the first alarm, the second alarm, and the third alarm according to the proximity of the object 60.

For example, when the distance is 0.8 to 1.2 m, the first alarm is output, when the distance is 0.4 to 0.8 m, the second alarm is output, and when the distance is 0.4 m or less, an alarm sound corresponding to the third alarm is output.

The control unit 20 calculates the distance D with the upper object 60 by the above-described method when it is determined that the tunnel area, compares the distance with a threshold value and outputs an alarm sound according to the comparison result, Switch to bet mode and turn on tail light.

Here, the threshold value is the vehicle passing reference height, and when the distance is larger than the threshold value, the threshold mode is changed and the tail light is turned on.

If the distance is smaller than the threshold, the alarm sounds and the alarm mode is switched on and the tail light is turned on.

The control unit 40 is a device operated by the control of the control unit 20 and includes a FATC 42, an internal / outer air conversion switch 44, and a taillight 46.

The full automatic temperature controller (FATC) 42 detects the temperature of the vehicle interior for the convenience of the driver and the passenger, and compares the blowing direction, the blowing amount, the indoor temperature, and the outside temperature with the set temperature. Automatically adjusts the device to maintain a comfortable interior space regardless of the external conditions, the control unit 20 in the tunnel area under the control of the control unit 20 in the bet mode, in the bet mode if not in the tunnel The mode is switched to outside air.

The internal / external air conversion switch 44 is a switch for electrically switching between a bet mode and an external air mode when the vehicle is not equipped with a FATC 42, and bet in an external air mode when the tunnel area is controlled by the control unit 20. Mode, it switches from bet mode to outside mode when the tunnel area is not.

The tail light 46 is turned on when driving in an area or day where the driver's clock is not good, such as a tunnel, a night or a cloudy weather, so as to inform the driver of another vehicle of his vehicle location or presence, and so on. It is turned on in the tunnel area by control of the lights and turned off in the tunnel area.

The alarm unit 50 outputs any one of the first alarm, the second alarm, and the third alarm depending on the proximity to the rear object 60 when the vehicle 50 is driven back to the control unit 20. If not, an alarm sound is output when the distance to the upper object 60 is smaller than the threshold.

2 is a flowchart illustrating a tunnel recognition and control method according to the present invention.

When the vehicle is started (S201), the control unit 20 determines whether the position of the transmission gear is in the reverse (R) state from the transmission sensor 30 (S202), and if it is in the reverse state, the BWS (10a, 10b,..., 10n). After performing the original detection of the rear sense and alarm function (S230), and then go back to step S202 to determine whether the position of the transmission gear is in the reverse state.

In other words, in step S230, the rear of the vehicle is sensed to differently output an alarm sound according to the proximity of the rear object 60.

When the position of the transmission gear is not in the reverse state in step S202, that is, in the forward (D), neutral (N), parking (P) state, the control unit 20 is the control motor 12a, 12b, ..., 12n The BWS 10a, 10b,..., 10n facing backwards is controlled upward by controlling the operation of the step S204.

The BWSs 10a, 10b, 10n facing upward by the control of the control motors 12a, 12b, 12n transmit ultrasonic waves toward the upper object 60 (S206) and the control unit 20 Determines whether or not the tunnel area according to the reception of the ultrasound (S208).

If it is determined that the open area is not in the tunnel area, it is determined whether the position of the transmission gear is in the reverse state from the transmission sensor 30 (S240), and if the reverse state is activated, the control motors 12a, 12b, ..., 12n are operated. After returning (10a, 10b, ..., 10n) to the original position so that the BWS facing upwards (S260), the process returns to the step S230 and performs a rear sensing and alarming function.

When it is determined in step S208 that the tunnel area, the distance D is calculated by using Equation 2 using the difference between the transmission time and the reception time of the ultrasonic wave, that is, the movement time T (S210), and the calculated distance is a preset threshold. Compared with (S212).

If the distance is greater than the threshold value, the control unit 40 is controlled to convert the outside and the outside air from the outdoor mode to the bet mode, and the tail light 46 is turned on (S214).

Accordingly, the polluted air in the tunnel is blocked from entering the vehicle interior, and other vehicles are notified of their vehicle location or existence to prevent collision.

When the distance is smaller than the threshold value, the alarm 50 is controlled to output an alarm sound to the driver's attention (S213), and then the controller 40 is controlled to convert the inside and the outside into the bet mode and the tail light. Lights (S214).

Subsequently, the BWSs 10a, 10b, ..., 10n transmit ultrasonic waves toward the upper object 60 under the control of the control unit 20 (S216), and the control unit 20 determines whether or not the ultrasonic waves have been received. It is determined whether or not according to the tunnel area (S218).

If it is determined that the tunnel region receives the ultrasonic waves, it is determined whether the position of the transmission gear is in the reverse state from the transmission sensor 30 (S220), and if it is not the reverse state, the process returns to step S216 and transmits the ultrasonic waves, In case of returning to step S260, the BWSs 10a, 10b, ..., 10n are returned to their original positions.

If it is determined in step 218 that the open area is not a tunnel area, after passing through the tunnel area, the controller 50 is controlled again to turn off the taillights while switching from the bet mode to the outside mode (S250), and in step S240. Return to determine if the transmission gear is in the reverse position.

As in the above system and flow chart, the present invention recognizes whether or not the tunnel area by using the BWS (10a, 10b, ..., 10n), and automatically performs the internal and external air mode conversion and the flashing of the tail light 46 of the driver. It can be convenient and allows the driver to drive safely.

As described above, according to the present invention, it realizes the recognition of the enclosed space such as the tunnel area by using the BWS, and thereby reduces unnecessary operations such as internal / external air mode conversion and taillight operation that require frequent actions of the user. It can provide drivers a safer, more comfortable and more comfortable environment.

Claims (7)

A plurality of BWS (10a, 10b, ..., 10n) for detecting the output of the object behind or above the vehicle by adjusting the rotation angle; A transmission sensor 30 which detects and outputs a transmission gear position of the vehicle in a reverse (R), neutral (N), forward (D), and parking (P) state; When it is determined whether or not the tunnel area according to the position of the transmission gear output from the transmission sensor 30 and whether or not the ultrasonic signal transmitted from the BWS (10a, 10b, ..., 10n) is received, and determines that the tunnel area is not A control unit 20 that performs a rear sensing and alarming function and outputs a control signal to turn on the tail light while converting the internal / external air mode into the bet mode when it is determined that the tunnel area; Control motors 12a, 12b, ..., 12n for respectively adjusting the rotation angles of the BWSs 10a, 10b, ..., 10n by operation control of the control unit 20; A controller 40 including a FATC 42 or an internal / external air conversion switch 44 and a tail light 46 that are turned off by the control signal of the control unit 20; And Tunnel recognition and control system using a BWS comprising an alarm (50) for outputting an alarm sound by the control signal of the control unit (20). The method of claim 1, The control unit 20 calculates the distance to the rear object by the rear sensing and alarming function, and the tunnel recognition using the BWS, characterized in that for outputting any one of several alarms according to the degree of the distance Control system. The method of claim 1, If it is determined that the control unit 20 is a tunnel area, and calculates the distance to the upper object 60 and compares the distance with the threshold value, if the distance is smaller than the threshold value, after outputting the alarm sound to bet mode and the taillight Tunnel recognition and control system using a BWS, characterized in that for outputting a control signal to turn on. The method of claim 1, The control motor (12a, 12b, ..., 12n) is a tunnel recognition and control system using a BWS, characterized in that the step motor rotates by a predetermined angle unit in accordance with the input pulse. A first step of determining whether the position of the vehicle transmission gear is in reverse (R); When the position of the transmission gear is reverse, the distance is calculated by measuring the time received after transmitting the ultrasonic wave from the BWS (10a, 10b, ..., 10n) to the rear object, and according to the degree of the distance, A second step of outputting one alarm sound; If the position of the transmission gear is not backward, by adjusting the position of the BWS 10a, 10b, ..., 10n upwards, transmitting ultrasonic waves to an upper object, and then determining whether or not it is a tunnel area according to reception step; A fourth step of switching from an outdoor mode to a bet mode and lighting a tail light when it is determined that the tunnel area is present; And And a fifth step of converting from the bet mode to the outside air mode and turning off the tail light when it is determined that the tunnel area is not the tunnel area. The method of claim 5, In the fourth step, by using the ultrasonic wave to calculate the distance to the upper object 60, comparing the distance with a predetermined threshold value and outputs an alarm sound when the distance is smaller than the threshold value Tunnel recognition and control method using BWS. The method of claim 6 After the fourth step and the fifth step, it is determined whether the position of the transmission gear is reverse (R), and in case of reversing, the BWS (10a, 10b, ..., 10n) is returned to its original position and then the second step is performed. Tunnel recognition and control method using BWS.

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