KR101018868B1 - Intelligent, energy-saving bus stop guide - Google Patents

Abstract

The present invention provides a display in which bus-related information is displayed, a display controller for controlling turn-on and turn-off of the display, an ultrasonic sensor for detecting whether a passenger exists within a sensing distance from the display using ultrasonic waves, and an ultrasonic wave for controlling the ultrasonic sensor. An intelligent energy-saving bus stop guide includes an energy saving calculation unit for controlling whether to enter an energy saving mode for turning off the display according to a frequency of a passenger sensed by the sensor control unit and the ultrasonic sensor.

Intelligence, energy, bus

Description

BUS INFORMATION TERMINAL FOR CURTAILING ENERGY INTELLIGENTLY}

The present invention relates to an intelligent energy-saving bus stop guide.

In general, a bus information terminal (BIT) is installed near a bus stop and performs a function of displaying bus related information such as bus location information, route search, and announcements to bus waiting passengers.

Currently installed bus stop guides are equipped with 20-inch or larger Liquid Crystal Display (LCD) or Light Emitting Diode (LED) displays, and the demand for larger displays is increasing.

Accordingly, the bus stop guide is gradually increasing the power consumption, and in order to compensate for this remote display turn on / off function, but the energy saving effect was insignificant.

The technical problem to be achieved by the present invention is to intelligently control the turn-on turn-off of the display according to the bus stop situation, the current date or the current time, to provide an intelligent energy-saving bus stop guide that can effectively save energy will be.

Technical problems to be achieved by the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above are provided to those skilled in the art (hereinafter, those skilled in the art) from the following description. It will be clearly understood.

An intelligent energy-saving bus stop guide according to an embodiment of the present invention is a display for displaying bus-related information, a display control unit for controlling the turn-on and turn-off of the display, and a passenger within a sensing distance from the display using ultrasonic waves. And an energy saving operation unit for controlling whether to enter an energy saving mode for turning off the display according to a frequency of passengers detected by the ultrasonic sensor.

The intelligent energy-saving bus stop guide according to an embodiment of the present invention can effectively save energy by intelligently controlling the turn-on turn-off of the display according to the bus stop situation, the current date, or the current time.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Specific details of other embodiments are included in the detailed description and the drawings. Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. Like reference numerals refer to like elements throughout.

1 is a block diagram of an intelligent energy-saving bus stop guide according to an embodiment of the present invention, Figure 2 is an illustration of a table of busyness attribute table, Figure 3 is an illustration of a date attribute table, Figure 4 is a visual attribute 5 is an exemplary diagram of a table, FIG. 5 is an exemplary diagram of a policy attribute table 630, FIG. 6 is a flowchart of energy saving control, FIG. 7 is an exemplary diagram of a congestion coefficient table 650, and FIG. 8 is a congestion coefficient. 9 is a flow chart for extraction, FIG. 9 is a flow chart for energy saving factor calculation, and FIG. 10 is an exemplary diagram of energy saving factor calculation.

An intelligent energy-saving bus stop guide according to an embodiment of the present invention uses a display 300 for displaying bus-related information, a display controller 200 for controlling turn-on and turn-off of the display 300, and ultrasonic waves. Passenger detected by the ultrasonic sensor 500, the ultrasonic sensor control unit 400 for controlling the ultrasonic sensor 500 and the ultrasonic sensor 500 to detect whether there is a passenger within the sensing distance from the display 300 It may be configured to include an energy saving calculation unit 100 for controlling whether to enter the energy saving mode to turn off the display 300 according to the frequency of the.

Meanwhile, the database 600 includes a complexity attribute table 610, a time attribute table 620, a policy attribute table 630, a date attribute table 640, and a congestion coefficient table 650.

Here, the busyness attribute table 610 includes a sensing distance, a sensing period, a congestion coefficient, a waiting time, and a policy reflection period, as shown in FIG. 2.

The sensing distance may be set in integer type and in cm unit, for example, 100 cm.

The detection period may be set in integer type and in units of seconds, for example, 60 seconds.

The congestion coefficient may be set to a real type, which will be described later with reference to FIG. 7.

The wait time may be set in integer type and in seconds, for example, 30 seconds.

The policy reflection time may be set to a character string and days / hours / minutes, for example, 10 minutes when inputting 000/00/10.

In addition, the date attribute table 640 includes a policy attribute according to a date or a day, as shown in FIG. 3, and when there is a policy attribute according to a specific date, the corresponding policy attribute is selected, and the policy attribute according to a specific date If not, the policy attribute according to the day of the week is selected. For example, in the case of January 1, Policy B is selected because there is a policy attribute according to January 1, and in the case of February 13, there is no policy attribute according to February 13, so February 13 is Friday. , Then policy A is selected according to the weekday.

Meanwhile, as illustrated in FIG. 4, the time attribute table 620 includes a start time and an end time according to the first to seventh sections. For example, when the current time is 8 o'clock, the first section is selected, and when the current time is 5 o'clock, the seventh section is selected.

5 illustrates congestion coefficient division according to policy division and time division. For example, when the policy A and the first section are input, the congestion coefficient-phase is selected. When the policy A and the second section are input, the congestion factor-phase is selected, and the policy A and the fifth section are input. Congestion factor-low is selected. This congestion coefficient-phase is utilized during commute in the city or weekdays, and the display 300 is more likely to be turned on in the same passenger frequency, and the congestion coefficient is utilized in secluded provinces or holidays, and in the same passenger frequency. The probability that the display 300 is turned on is relatively low.

7 illustrates a congestion coefficient according to classification of congestion coefficients. For example, it is set to 0.5 in the case of congestion coefficient-up, to 0.0 in the case of congestion coefficient-, and to -0.5 in the case of congestion coefficient-lower. This congestion coefficient may change depending on the situation.

A method of extracting the congestion coefficient will be described with reference to FIG. 8.

First, the policy classification is extracted from the date attribute table 640 using the current date or the day of the week (S810).

Next, a time division is extracted from the time attribute table 620 using the current time (S820).

Next, the congestion coefficient classification is extracted from the policy attribute table 630 using the policy classification and the time classification (S830).

Next, a congestion coefficient is extracted from the congestion coefficient table 650 using the congestion coefficient division (S840).

With reference to FIG. 6, energy saving control is demonstrated.

First, the normal mode is started (S610), and the display 300 is turned on (S620).

Next, check whether it corresponds to the energy saving mode (S630), if the energy saving mode does not correspond to the normal mode (S610), if the energy saving mode is entered into the energy saving mode (S640). .

Next, the display 300 is turned off (S650), and it is detected (S660) whether a passenger exists within the sensing distance of the busyness attribute table 610.

If there is no passenger, the display 300 is continuously turned on (S650), and if there is a passenger, the display 300 is turned on (S670).

Next, check whether the waiting time of the busyness attribute table 610 has elapsed (S680). If the waiting time has not elapsed, the display 300 is continuously turned on (S670), and when the waiting time has elapsed, energy saving is performed. Check whether the mode is applicable (S690).

In the case of the energy saving mode, the display 300 is turned off (S650). If the energy saving mode does not correspond, the normal mode is started (S610).

An energy saving calculation will be described with reference to FIG. 9.

First, 0 is substituted into the energy saving coefficient (S910), and a congestion coefficient is extracted (S920).

Next, it is detected whether a passenger exists within a sensing distance for each sensing period of the complicatedness attribute table 610 (S930).

Next, the energy saving factor n according to Equation 1 is calculated (S940).

Energy saving factor (n) = energy saving factor (n-1) + detection factor (s) + congestion factor

Here, the energy saving factor n is a current energy saving factor, the energy saving factor n-1 is a previous energy saving factor, and the detection factor s is a coefficient for the presence of a passenger.

Next, after confirming whether or not the policy reflection cycle of the complicatedness attribute table 610 has elapsed (S950), if it has not elapsed, the energy saving factor is continuously calculated (S940).

Next, it is checked whether the energy saving factor is 0 or more (S960). When the energy saving factor is 0 or more, control is performed in the normal mode (S971). When the energy saving factor is less than 0, the control is performed in the energy saving mode (S972). do.

With reference to FIG. 10, the method of calculating an energy saving coefficient is demonstrated.

Herein, the detection coefficient s is set to 1 when it is detected and -1 when it is not detected, and may be changed according to circumstances.

In addition, the congestion coefficient-phase was set to 0.5, the congestion coefficient to 0.0, the congestion coefficient to -0.5, the detection period was set to 60 seconds, and the policy reflection period was set to 10 minutes.

Accordingly, as a result of detecting the passengers ten times and calculating the energy saving coefficients for the congestion coefficient-up, the congestion coefficient-up, and the congestion coefficient-down, respectively, as shown in FIG. It was calculated as 0.0 for congestion coefficient- and -4.5 for congestion coefficient-lower.

Therefore, in the congestion coefficient-up and congestion coefficient- it is controlled in the normal mode, and in the congestion coefficient-lower it is controlled in the energy saving mode.

Intelligent energy-saving bus stop guide according to an embodiment of the present invention is energy-saving operation unit 100 according to the energy of the passengers detected by the ultrasonic sensor 500, the current date, the current time or the position of the bus stop You can control whether to enter saving mode.

In addition, the intelligent energy-saving bus stop guide according to an embodiment of the present invention is calculated by entering into the energy saving mode by the energy saving operation unit 100 so that the ultrasonic wave in the state that the display 300 is turned on If it is detected by the sensor 500 that the passenger is present, the display 300 may be turned on.

In addition, the intelligent energy-saving bus stop in accordance with an embodiment of the present invention enters the energy saving mode by the energy saving operation unit 100, the ultrasonic sensor 500 is detected that the passenger is present After the waiting time has elapsed while the display 300 is turned on, the display 300 may be turned off.

In addition, the intelligent energy-saving bus stop guide according to an embodiment of the present invention may control whether the energy saving operation unit 100 enters the energy saving mode at every policy reflection period.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims.

Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

1 is a block diagram of an intelligent energy-saving bus stop guide according to an embodiment of the present invention.

2 is an exemplary diagram of a complexity table.

3 is an illustration of a date attribute table.

4 is an exemplary view of a visual attribute table.

5 is an exemplary diagram of a policy attribute table.

6 is a flow chart for energy saving control.

7 is an illustration of a congestion coefficient table.

8 is a flow chart for congestion coefficient extraction.

9 is a flow chart for energy saving factor calculation.

10 illustrates an example of energy saving factor calculation.

Claims (7)

A display on which bus related information is displayed; A display controller configured to control turn on and turn off of the display; An ultrasonic sensor for detecting whether a passenger exists within a sensing distance from the display using ultrasonic waves; An ultrasonic sensor controller for controlling the ultrasonic sensor; And And an energy saving calculator configured to control whether to enter an energy saving mode of turning off the display according to the frequency of passengers sensed by the ultrasonic sensor. The energy saving operation unit intelligent energy-saving bus stop guide, characterized in that for controlling whether to enter the energy saving mode according to the frequency and the current date of the passenger sensed by the ultrasonic sensor. delete The method of claim 1, The energy saving operation unit intelligent energy-saving bus stop guide, characterized in that for controlling whether to enter into the energy saving mode according to the frequency and current time of the passenger sensed by the ultrasonic sensor. The method of claim 1, The energy saving operation unit intelligent energy-saving bus stop guide, characterized in that for controlling whether to enter the energy saving mode according to the frequency of the passenger and the location of the bus stop detected by the ultrasonic sensor. The method of claim 1, Intelligent energy, characterized in that the energy saving operation unit is calculated to enter the energy saving mode when the display is turned on when the presence of the passenger is detected by the ultrasonic sensor when the display is turned on intelligent energy Economy bus stop guide. The method of claim 5, The energy saving operation unit enters the energy saving mode, and after the waiting time has elapsed while the display is turned on by detecting that a passenger is present by the ultrasonic sensor, the display is turned off. Intelligent, energy-saving bus stop guide. The method of claim 1, The energy-saving operation unit intelligent energy-saving bus stop guide, characterized in that for controlling the entry into the energy-saving mode every policy reflection cycle.

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