KR101204374B1 - Parking place management system using PLC communication and method thereof - Google Patents

Abstract

PURPOSE: A system and method for managing a parking lot using a PLC communication method are provided to avoid unnecessary energy waste by selectively controlling the brightness of illumination. CONSTITUTION: A slave(200) senses the access of people or vehicles and controls the illumination in a parking lot. A master controller performs two-way communication through a power line which supplies power to each group of the slave. A monitoring control device outputs parking situations in each parking area on a display. A motion sensor(250) senses the movement of the vehicles or people. An infrared light module(230) outputs an infrared light to the parking area. A slave controller(220) selectively controls the brightness of a lamp. [Reference numerals] (210) Communication means; (220) Slave controller; (230) Infrared light module; (240) Camera; (250) Motion sensor; (260) Lighting means; (261) Lamp; (262) Alarm lamp

Description

Parking place management system using PLC communication and method

The present invention relates to a parking lot management system and method using the PLC communication method, and in detail, by using a sensor and a camera to check the movement of the vehicle or a person in the parking lot to select the illumination intensity of the parking lot according to the presence of the vehicle or person The present invention relates to a parking lot management system and method using a PLC communication method that can be controlled to prevent unnecessary energy consumption, and visually display the parking availability of each parking area to facilitate the driver's convenience.

Motion sensor is a sensor that detects motion and is widely used because of its low cost and easy application. However, the disadvantage is that even if there is an object in the detection area, the object cannot be detected if it does not move for a while.

In order to explain the disadvantage of such a motion sensor), when the user arrives at the entrance of the apartment, the lighting is turned on, but when the user waits for the elevator, the lighting is turned off.

Therefore, the motion sensor is not suitable as a sensor for continuously detecting while parked a vehicle parked due to the above problem.

In addition, the conventional parking lot system has proposed a technique for detecting a vehicle using a camera to overcome the disadvantages of the motion sensor as described above. Irrespective of the need to maintain a constant brightness, there was a problem that unnecessary energy consumption occurs.

Therefore, the present invention has been made to solve the above-mentioned conventional problems, an object of the present invention is to detect the movement of the vehicle and the movement of people in the parking lot to selectively turn on and off the illumination and selectively adjust the brightness of unnecessary energy It is to provide a parking lot management system and method using PLC communication method that can prevent consumption.

In addition, another object of the present invention is to detect the movement of a vehicle or person through a motion sensor, to track the movement of the vehicle or person detected by the motion sensor with a camera, and to accurately detect whether the vehicle is parked or not to park the parking area. It is to provide a parking lot management system and method using PLC communication method that can visually indicate whether or not.

In addition, another object of the present invention is a control device for the integrated control of each parking facility for the detection of the movement of the vehicle or people in the parking lot where a plurality of parking facilities are installed, the exact parking of the vehicle and the control of the lighting facility and each It is to provide a parking lot management system and method using PLC communication method that can facilitate communication between the parking facilities of the parking facilities to facilitate the cost and convenience of work.

The present invention includes the following embodiments in order to achieve the above object.

A first embodiment of the present invention is installed in a plurality of parking zones each divided into a slave that is sequentially connected to one or more sequentially to control the lighting in the parking zone to detect the approach of the vehicle and people; A master control unit configured to perform bidirectional communication with a power line for supplying power to each group to which the slave is connected; And a monitoring controller for outputting a parking situation in each parking zone received by the master controller to the display, wherein the master controller repeatedly repeats the phase of the power supplied to the slave through the power line. Switching and supplying so as to cross each other is characterized in that the supply of the communication signal and the power can be made at the same time.

In the second embodiment of the present invention, the slave includes a motion sensor for detecting the movement of the vehicle or person in the parking area; An infrared light module for outputting infrared light in the parking area when the motion of the motion processor is detected; A camera for photographing the corresponding area when the infrared light is irradiated in the parking area by the infrared light module; Lighting means having illumination lamps for outputting visible light in the parking area; And a slave controller for controlling the infrared light module and the camera to photograph the parking area by comparing the previously photographed data with the currently photographed data to selectively control the brightness of the lamp when the motion detection signal of the motion sensor is received. Include.

In a third embodiment of the present invention, the slave includes a motion sensor for detecting the movement of the vehicle or person in the parking area; A distance sensor for detecting a distance of the parking area; Lighting means including an illumination light for outputting visible light to the parking area and an alarm light for displaying whether the vehicle is parked in the parking area in different colors; And a slave controller for controlling the alarm of the lighting means by determining whether the vehicle is parked in the parking area by comparing the detected distance with the reference distance by driving the distance detection sensor after the motion detection of the motion sensor.

In a fourth embodiment of the present invention, the slave includes communication means for performing bidirectional communication through a power line, the communication means comprising: rectification means for rectifying power supplied through a power line connected to the master control unit; A regulator for outputting the power rectified by the rectifying means at a constant voltage to supply the camera, the infrared light module, the lighting means, the motion sensor, and the slave controller; First switching means for switching a communication signal received from the master controller to apply to the slave controller; And second switching means for generating a load on a power line connected to the master controller by shorting a power line connected to the regulator from the rectifying means by being turned on by a transmission signal output from the slave controller.

In the fifth embodiment of the present invention, the second switching means includes a transistor connected between the rectifying means and the regulator and turned on when the transmission signal is applied from the slave controller to short the line between the rectifying means and the regulator. .

In the sixth embodiment of the present invention, the master control unit comprises: power supply means for supplying power through a power line; A master controller for receiving information including the parking status received from the slave controller and transmitting the received information to the monitoring control device, and outputting a transmission signal to the slave under control of the monitoring control device; Inverting means for inverting a transmission signal output from the master controller; A first switching block which is switched on and off according to a transmission signal output from the master controller and outputs the signal to the slave as a signal in which a positive and a negative phase cross each other by switching power supplied from the power supply means; And a second switching block for switching the output signal inverted by the inverting means and outputting the signal to the first switching means, wherein the first switching block and the second switching block transmit the inverted signal. It features.

In the seventh embodiment of the present invention, the master controller generates a voltage difference generated by the load generated by the power line is short-circuited in the slave to restore the transmission signal of the slave controller to output to the master controller It further comprises a reception detecting means.

In an eighth embodiment of the present invention, the reception detecting means includes: a resistor for generating a voltage at both ends by a current generated by a short of the power line; A comparator for comparing and outputting a voltage difference generated between both ends of the resistor; And a pulse generator converting the voltage difference output from the comparator into a pulse and outputting the pulse to the master controller.

In the ninth embodiment of the present invention, the lighting means is preferably controlled by the brightness of the lamp by the control of the slave controller according to the presence or absence of the detection of a vehicle or a person.

A tenth embodiment of the present invention includes one or more groups having one or more slaves connected in series, and uses a PLC communication method having one or more master controllers connected to each group including the one or more slaves. A parking management method comprising: a motion detection step of receiving a motion detection signal in which a movement of a vehicle or a person is detected in a parking area; An infrared light emitting step of irradiating infrared light in the parking area where the motion is detected in the motion detection step; An image analysis step of driving an camera after the infrared light emitting step to take an image or an image in the parking area and compare the image with the reference image or image; A lighting control judging step of determining whether the brightness of a lamp should be adjusted by checking whether there is a movement of a person or a vehicle in the parking area through the analysis result of the image analyzing step; In the lighting control determination step, if it is determined that the movement of the vehicle or the person is detected to turn on the brightness of the lamp to illuminate the corresponding parking area at the normal output, the lighting step to turn on the brightness to the rated output brightness; A parking determination step of detecting whether the vehicle is parked or unloaded in the parking area after the lighting step; When the parking or the exit of the vehicle is detected, it comprises an alarm light display step of controlling the warning light having a different color to display whether the parking or exit.

In the eleventh embodiment of the present invention, the parking management method using the PLC communication method outputs the rated brightness of the lamp after the set time has elapsed if the movement of the vehicle or person is not detected in the parking determination step It further comprises a; off to control the lamp to maintain less than 50% of the.

In a twelfth embodiment of the present invention, the parking management method using the PLC communication method further includes a transmission step of transmitting whether or not the parking of the vehicle in the parking area in the master control unit after the alarm light off step.

In the thirteenth embodiment of the present invention, since the master control unit and the slave transmit the power to the slave by changing the phase of the power supplied to the slave according to the transmission signal output to the master control unit, It is characterized by performing bidirectional communication with the supply.

In a fourteenth embodiment of the present invention, the slave may short-circuit a power line connected to the master control unit to generate a load on the power line and transmit the load to the master control unit.

In the fifteenth embodiment of the present invention, it is preferable that the master control unit recovers the original signal transmitted from the slave by converting the voltage difference generated by the load generated from the power line into pulses.

Embodiment 16 of the present invention includes one or more groups having one or more slaves connected in series, the parking using the PLC communication method having one or more master controllers are connected to each group containing the one or more slaves A management method, comprising: a distance sensing step of sensing a distance in a parking area when motion in the parking area is detected; A lighting control judging step of determining whether to adjust the brightness of a lighting lamp by checking whether the vehicle is parked in the parking lot by comparing the current distance in the parking zone detected in the distance sensing step and the stored reference distance; If it is determined that the brightness of the lamp to illuminate the parking area to the normal output in the lighting control determination step, the lighting step of lighting the lamp to the rated output; A parking determination step of detecting whether the vehicle is parked or unloaded in the parking area after the lighting step; When the parking or the exit of the vehicle is detected, it comprises an alarm light display step of controlling the warning light having a different color to display whether the parking or exit.

In the seventeenth embodiment of the present invention, the parking management method using the PLC communication method outputs the rated brightness of the lamp after the set time has elapsed if the movement of the vehicle or person is not detected in the parking determination step It is preferable to further include a; lamp off step of controlling to maintain less than 50% of.

In the eighteenth embodiment of the present invention, the parking management method using the PLC communication method further includes a transmission step of transmitting whether or not the parking of the vehicle in the parking area in the master control unit after the alarm light off step.

In the nineteenth embodiment of the present invention, since the master control unit and the slave transmits to the slave by varying the phase of the power supplied to the slave in accordance with the transmission signal output to the master control unit of the power supply through the power line It is preferable to perform bidirectional communication with the supply, and the slave short-circuits the power line connected to the master control unit to generate a load on the power line and transmit the load to the master control unit.

The present invention can control the lighting in the parking lot sequentially by checking the movement of the vehicle and people and whether the parking is in the right position, thereby preventing the waste of energy due to unnecessary lighting, and visualizing whether parking is possible in the parking lot. Since it can be displayed as an effect to facilitate the drivers of vehicles entering the parking lot.

In addition, the present invention has the effect that it is possible to establish a parking management system at a lower cost because it is possible to perform communication through one line for each group in a parking system including a plurality of parking facilities including a plurality of parking facilities for each group have.

1 is a block diagram showing a parking lot management system using a PLC communication method according to the present invention,
Figure 2 is a block diagram showing a slave in the parking lot management system using the PL communication method according to the present invention,
3 is a block diagram illustrating a master controller and a slave in a parking lot management system using a PLC communication method according to the present invention;
Figure 4 is a circuit diagram showing a receiving detection means in the parking lot management system using the PL communication method according to the present invention,
5 is a circuit diagram showing a second switching means in the parking lot management system using the PLC communication method according to the present invention;
6 is a flowchart illustrating a parking lot management method using a PLC communication method according to the present invention;
7 is a waveform diagram showing the input and output signals of the parking lot management system using the PLC communication method according to the present invention,
8 is a block diagram showing a slave in another embodiment of the parking lot management system using the PLC communication method according to the present invention;
9 is a flowchart illustrating another embodiment of the parking lot management method using the PLC communication method according to the present invention.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the parking lot management system c and method using PLC communication method according to the present invention.

1 is a block diagram illustrating a parking lot management system using a PLC communication method according to the present invention.

1, the parking lot management system using the PLC communication method according to the present invention is a master control unit (100, 100 ', 100 ``) and a number of parking zones in one or more of the divided parking zones A plurality of slaves 200, 200 ′, 200 ″ for controlling lighting, and a monitoring control device 300 for monitoring the parking situation in the entire parking lot through the master control unit 100 and displaying them on the display. .

A plurality of slaves 200 are connected in series to form a group, and a plurality of groups are constructed in two-way communication lines through power lines.

The master controllers 100, 100 ′ and 100 ″ are connected to respective groups of the slaves to transmit communication signals received from the slaves 200, 200 ′ and 200 ″ to the monitoring control device. The master controller performs bidirectional communication through a power line for supplying power to the slave.

That is, the first to fourth slaves 200 in the first group are connected in series to the power line connected to the master control unit 100 to transmit the parking and parking in the parking area. In addition, the slaves 200, 200 ′, 200 ″ for each group receive power from the master controllers 100, 100 ′, 100 ″, and the master controllers 100, 100 ′, 100 ″. Transmit and receive signals via power lines connected to

As the slave 200 is connected in series, each unique code is set, and when communicating with the master control unit 100 includes the respective unique code to perform communication.

That is, when the master control unit 100 outputs a control signal to a specific slave 200 of the connected group, the slave control unit 200 of the corresponding group receives the unique code included in the transmission signal of the master control unit 100. Check and apply the signal to the next slave. Therefore, the slave 200 receives the corresponding signal only when it compares its own code with the unique code included in the received signal. Similarly, when a signal is received from any one of the plurality of slaves 200, the master control unit 100 checks the corresponding slave 200 by checking the unique code included in the corresponding signal.

In addition, a plurality of master control unit (100, 100 ', 100' ') also includes a unique code to communicate with the monitoring control device 300.

Such a master control unit 100 and the slave 200 will be described with reference to FIGS. 2 to 4 below.

Figure 2 is a block diagram showing a slave in the parking lot management system using the PLC communication method according to the present invention.

Referring to FIG. 2, the slave 200 communicates with the master controller 100, an infrared light module 230 that outputs infrared light in a parking area, and a camera for capturing an image or an image. 240, the motion sensor 250 for detecting the movement of the vehicle and the person, the lighting means 260 for brightening the inside of the parking area, and the illumination signal through the output signals of the motion sensor 250 and the camera 240. And a slave controller 220 for controlling the means 260 and communicating with the master controller 100 via the communication means 210.

The motion sensor 250 detects a movement of a vehicle or a person and applies the motion to the slave controller 220. In this case, the motion sensor 250 detects the movement of a vehicle or a person in any one of a plurality of divided parking zones. For example, when the driver moves to a parking area where his vehicle is parked, when the vehicle reaches a predetermined distance from the parking area, the motion sensor 250 detects a movement around the vehicle and detects the detection signal to the slave controller 220. Send.

The lighting means 260 is an alarm light 262 (for example, green, red and yellow light) indicating that parking is possible, parking is not possible, and parking, and a lighting light that outputs visible light to illuminate the parking area and its surroundings ( 261) is turned on or off by the control of the slave controller 220.

The lighting means 260 turns on or off the lamp 261 and the alarm lamp 262 under the control of the slave controller 220. In particular, the lamp 261 illuminates the normal brightness at a brightness of 50% or less of the rated output, and is then illuminated at a brightness of 100% of the rated output by the control of the slave controller 220 according to the detection of a vehicle or a person. .

The warning light 262 displays whether the vehicle is available in the parking area, so that when the driver of the vehicle enters the parking lot, the parking situation of each parking area can be visually checked to facilitate the parking.

The infrared light module 230 outputs infrared light under the control of the slave controller 220 to create a state in which the camera 240 can photograph. In this case, the infrared light module 230 illuminates the infrared light in an area including any one parking area or more parking areas allocated in the plurality of parking areas.

In this case, the lighting means 260 normally illuminates the lighting state of the parking area with the brightness of 50% or less of the usual time to prevent unnecessary consumption of energy in the absence of a vehicle or a person. Therefore, when the camera 240 photographs the parking area, since the lamp 261 is turned on at a brightness of 50% or less of the rated output, the amount of light is low, so that the discrimination power of the object is reduced when shooting in visible light. Accordingly, the present invention captures an infrared image or an image by driving the infrared light module 230 instead of the visible light so as to prevent unnecessary energy consumption and to photograph by the camera 240.

The camera 240 photographs the corresponding parking area designated by the control of the slave controller 220 and applies the captured image signal to the slave controller 220. Here, the camera 240 may be photographed as an image or an image, which is a matter that can be selected by the designer and the operator. In addition, the camera 240 is characterized in that the camera capable of shooting in both visible and infrared light conditions. Such a camera is known, and since it is a commercially available product, its detailed description is omitted.

When the motion controller 250 detects a movement of a vehicle or a person in the parking area, the slave controller 220 drives the infrared light module 230 and the camera 240 to photograph the parking area to record a previous image. Or compare with the image. To this end, the slave controller 220 stores a reference image or a reference image to be compared and compares the image or image applied from the camera 240. As a result of comparison, the slave controller 220 controls the brightness of the lighting means 260 by comparing the image or image photographed by the camera 240 with the previous image or image where the vehicle is parked in the parking area.

For example, the slave controller 220 lights a red alarm light to control the lighting means 260 to indicate a non-parking state if there is a vehicle already parked in the parking area, and if the vehicle is not parked in the parking area. Turn on the green alarm that is available for parking. In addition, the slave controller 220 lights the lamp 261 to illuminate the surroundings in addition to the alarm lamp 262.

In addition, the slave controller 220 maintains the brightness of the lamp at 50% or less of the rated output at normal times, and when the approach of the vehicle or a person is confirmed as described above, the intensity of the lamp is 100% at the rated output of 100%. The lighting is controlled to the intensity of%, and when the parking is completed and the movement of the vehicle is not detected for a person or the set time, the lighting means 260 is controlled to control the illumination to the intensity of 50% or less of the rated output.

Here, the slave controller 220 transmits the parking or leaving of the vehicle to the master controller 100 as described above, and drives the lighting means 260 under the control of the master controller 100. To this end, the slave controller 220 further includes a communication means 210 to communicate with the master controller 100.

The communication means 210 will be described with reference to FIGS. 3 and 4 together with the configuration of the master control unit 100.

The master controller 100 performs bidirectional communication through a power line for supplying power to a group in which a plurality of slaves 200 are connected in series to transmit information on the parking status of the entire parking lot to the monitoring control device. can do.

A detailed configuration for this is as shown in FIG.

3 is a block diagram showing a master control unit in the parking lot management system using the PLC communication method according to the present invention;

Referring to FIG. 3, the master controller 100 includes a master controller 110 that controls transmission and reception from the slave 200, and a first controller configured to transfer an input / output signal between the master controller 110 and the slave 200. Switching block 130 of the second switching block 150, the inverting means 140 for inverting the signal of the master controller 110 and applying to the second switching block 150, and the slave 200 Receiving detection means 120 for detecting the output signal and transmitting to the master controller 110, and a power supply means 160 for supplying power to the slave 200.

When the first switching block 130 and the second switching block 150 are composed of a plurality of switching elements (for example, transistors) to output a serial communication signal Tx from the master controller 110, the slave Switching the signal of the line connected to the (200) so as to intersect the high and low signal to switch the phase of the voltage supplied from the power supply means 160 to supply power to the slave 200 And transmits the transmission signals AA and AB.

In the present invention, the master control unit 100 can perform bidirectional communication using a power line for supplying power between a group of slaves 200 in which a plurality of slaves are connected in series.

That is, the present invention supplies the 24V power supplied from the power supply means 160 of the master controller 100 through the power line connected to the slave 200. In this case, the power supply unit 160 switches the power of 24V through the first switching block 130 and supplies the power to each slave 200 in the corresponding group.

In this case, when the serial communication signal Tx is output from the master controller 110, the first switching block 130 and the second switching block 150 supply power to the power line (VCC) and negative (GND). By switching so that the phases cross each other, power is transmitted to the slave 200 and the transmission signal transmitted from the master controller 110 and the transmission signal transmitted from the slave controller 220 are transferred.

That is, when the signal output from the master controller 110 is high, the signal output from the first switching block 130 is GND, and the signal output from the second switching block 150 is 24V. When the signal output from the master controller 110 is low, the first switching block 130 is 24V and the second switching block 150 is GND.

That is, the first switching block 130 and the second switching block 150 change the phases of the power supplied to the slave 200 in accordance with the transmission signal of the master controller 110 to supply the power together with the power supply. The transmission signal of the master controller 110 is transmitted.

The inverting means 140 inverts the output signal of the master controller 110 and applies it to the second switching block 150. That is, when the high signal is applied from the master controller 110, the inverting means 140 inverts the low signal to output the low signal to the second switching means 213.

The reception detecting unit 120 turns on the received signal when the current is generated in the line between the first switching block 130 and the slave 200 as the original signal output from the slave 200 in the form of a pulse. Restore and apply to the master controller 110. At this time, the detailed circuit of the reception detecting means 120 is as shown in FIG.

Figure 5 is a circuit diagram showing a receiving detection means in the parking lot management system using the PLC communication method according to the present invention.

Referring to FIG. 5, the reception detecting means 120 senses a load generated by a short of a power line connected to a regulator in the rectifying means 211 (see FIGS. 3 and 4) of the slave 200, and then detects a voltage. A resistor 121 for generating a voltage, a comparator 122 for outputting a voltage difference generated at both ends of the resistor 121, and a voltage output from the comparator 122 to oscillate as a pulse to the master controller 110. And a pulse generator 123 outputted to the.

Here, the resistor 121 generates voltage at both ends due to the load generated by the power line short of the slave 200, and the voltage across the resistor 121 calculates the difference in the comparator 122. To the pulse generator 123. Accordingly, the pulse generator 123 oscillates the comparator voltage difference as a pulse signal, restores the transmission signal of the slave controller 220 and applies it to the master controller 110.

That is, the reception detecting unit 120 detects the load by the transmission signal output from the slave controller 220 in the slave 200, restores the original signal, and applies the restored signal to the master controller 110. do.

The communication means 210 of the slave 200 rectifies and outputs the input / output signal and the rectifying means 211 and the switching signal applied by the rectifying means 211 is applied to the slave controller 220 A first switching means 212, a second switching means 213 for switching the communication signal output from the slave controller 220 to the rectifying means 211, and a regulator 214 for outputting a constant voltage; do.

The rectifying means 211 rectifies and supplies the power sources AA and AB crossed in the positive and negative phases from the master control unit 100 to the regulator 214. In this case, the rectifying means 211, for example, the input terminal is connected to the first switching block 130, the output terminal is connected between the second switching block 150 and the first switching means 212. It is a bridge diode.

The regulator 214 outputs the power supplied through the rectifying means 211 to the slave controller 220 by outputting the voltage Vcc (for example, 5V) at a predetermined level. Here, the slave controller 220 supplies power supplied through the regulator 214 to the operating power of the camera 240, the infrared module, the lighting means 260, and the motion sensor 250, respectively.

The first switching means 212 is switched on by a transmission signal applied from the second switching block 150 and the first switching block 130 and transmitted to the slave controller 220. For example, the first switching means 212 is low if the output signal AA of the first switching block is negative and the output signal AB of the second switching block is positive. ) And, in the opposite case, a high signal is output to receive the transmission signal of the master controller 100.

The second switching means 213 is switched on by the transmission signal Tx output from the slave controller 220 to short-circuit the power line between the rectifying means 211 and the regulator 214 in the rectifying means. The load is generated on the power line connected to the master control unit. The circuit diagram of the second switching means 213 is as shown in FIG.

Referring to FIG. 4, the second switching means 213 may include a diode D1 between the rectifying means 211 and the regulator 214, and a capacitor C connected to an output terminal of the slave controller 220. A base is connected to the capacitor C, and an input terminal is composed of a transistor Q1 connected between the rectifying means 211 and the diode D1.

Therefore, when the high signal is output from the output terminal of the slave controller 220, the second switching means 213 is turned on so that the current between the rectifying means 211 and the diode D1 is applied to the ground terminal GND. By shorting the line connected to the regulator 214. Such a short in the slave generates a load on the power line of the master controller 100, and the transmission signal of the slave controller 220 is restored by the above-described reception detecting means 120 to the master controller 110. Is applied to.

The present invention can implement a parking lot management method using the PLC communication method including the configuration as described above. This will be described in detail with reference to FIG.

6 is a flowchart illustrating a parking lot management method using a PLC communication method according to the present invention.

Referring to FIG. 6, the parking lot management method using the PLC communication method according to the present invention includes a motion detection step (S11) of detecting a movement in a parking area, and an infrared light emitting step of emitting infrared light and irradiating the parking area ( S12), an image analysis step (S13) of taking an image or image in the parking area and comparing it with a reference image or image, and determining whether to control the lighting in the parking area through the analysis result in the image analysis step (S13). In the lighting control determination step (S14), and when the motion is detected in the parking area in the lighting control determination step (S14), the lighting step (S15) for controlling the brightness of the lights in the parking area, and the vehicle in the parking area Parking or not judging step (S16) for detecting whether parking or leaving, and if parking or leaving is not detected in the parking whether or not (S16) to turn off the lights after a set time elapsed The light off step (S17), and when the vehicle is detected parking or leaving the car alarm display step (S18) to control the warning light to display whether the parking or leaving, and whether the parking of the vehicle in the parking area the master control unit 100 Transmission step (S19).

The motion detection step S11 is a step of receiving a detection signal of the motion sensor 250 at the slave controller 220. The motion sensor 250 is installed for each parking area divided into a plurality of sections and senses the approach of a vehicle or a person to apply a detection signal to the slave controller 220. At this time, the luminaire 260 illuminates the brightness of the luminaire installed in the parking area to be maintained at 50% or less of the rated output.

In the infrared light emitting step (S12), the infrared light module 230 emits the infrared light in the corresponding area by the control of the slave controller 220. When the slave controller 220 receives the motion detection signal of the motion sensor 250, the slave controller 220 drives the infrared light module 230 to output and control infrared light in a corresponding area.

 The image analyzing step (S13) is a step in which the slave controller 220 drives the camera 240 to take a region where motion is detected by the motion sensor 250, and compare the image with a reference image or an image. The slave controller 220 stores the stored reference image or image, and compares the image or image in the parking area photographed by the camera 240 with the reference image.

Here, the camera 240 is a camera 240 capable of shooting both in the infrared light and visible light conditions, the infrared light module 230 because the amount of light is insufficient when shooting in the visible light in the ambient situation where the brightness of the lamp is 50% or less. Photograph the parking zone in the infrared light environment output by That is, the present invention is characterized in that it is configured through the infrared light and the camera 240 in order to prevent unnecessary lighting and at the same time to increase the accuracy in detecting vehicles or people in the parking area.

The lighting control judging step S14 adjusts the intensity of a lamp that is illuminated at a brightness of 50% or less of the current rated power according to the result of the image analyzing step S13 in the slave controller 220 to 100% of the rated output. It is a step to determine if it should. Here, the slave controller 220 lights the lamp according to the result of the image analysis step (S13). The lighting lamp is a luminaire such as a general fluorescent lamp or an LED lamp that emits visible light by electrical energy, and other luminaires that output visible light may be selectively applied.

Therefore, the slave controller 220 compares the reference image or the reference image with the newly photographed image and the image as a result of the comparison in the image analysis step (S13) when it is confirmed that there is a movement of the vehicle or a person's access in the parking area. Control to turn on the lamp.

In the lighting step S15, when it is determined that the vehicle or a person approaches or moves in the lighting control determination step S14, the brightness of the lighting lamp outputting the visible light from the lighting unit 260 is the brightness at the normal output time. It is a step of lighting to be 100%. In the present invention, when the vehicle or person's approach is not normally detected, the brightness of the lamp 261 is maintained at 50% or less than the brightness at the rated output. The lamp 261 can be controlled to achieve 100% brightness of the output.

The parking determination step (S16) is a step in which the slave controller 220 determines whether the vehicle detected in the parking zone is parked or unloaded. The slave controller 220 determines whether the movement of the vehicle parked in the parking area is detected or whether the vehicle enters the empty parking space.

At this time, the slave controller 220 is provided with a sensor (not shown in the figure) at the entrance and the end of the parking area, respectively, to further install a sensor to receive a detection signal for departure or entry of the vehicle. desirable.

The detection sensor (not shown in the drawing) may be, for example, a pressure sensor installed on the floor of the parking lot to detect pressure when the vehicle enters or an optical sensor to detect a vehicle entering at the entrance or the end of the parking lot. It can be included so as to detect the entry or departure of the vehicle.

The brightness control step (S17) is the time after the brightness of the lamp 261 is adjusted to 100% of the rated output without the parking or leaving of the vehicle or the user's access in the parking zone in the slave controller 220 When the set time elapses by counting, 50% or less is adjusted.

The alarm lamp display step S18 is a step of displaying whether or not the vehicle is parked and discharged through the alarm lamp 262 by the control of the slave controller 220 in the parking determination step S16. The warning light 262 displays the parking available state (eg, green) and the unparkable state (eg, red) in different colors. Alternatively, the lighting means 260 displays the parking state (for example, red) and the leaving state (for example, yellow) of the vehicle in different colors together with an alarm sound so as to be recognized by another person or the vehicle. It is also possible.

In the transmitting step S19, the slave controller 220 transmits the state of the parking area to the master controller 100. That is, the slave controller 220 transmits the parking or leaving of the vehicle to the master controller 100 through the serial communication port Tx. At this time, the second switching means 213 is turned on when a signal is applied from the slave controller 220 to short-circuit the power line between the rectifying means 211 and the regulator 214.

Therefore, a load is generated in the power line of the master controller 100, and the load is sensed by the reception detecting means 120. That is, the reception detecting means 120 generates a voltage at both ends of the resistor 121 by the load generated from the power line, and calculates the difference in the comparator 122 and applies it to the pulse generator 123. Accordingly, the pulse generator 123 restores the signal output from the comparator 122 to the original signal output from the slave controller 220 as a pulse signal and transmits the signal to the master controller 110.

The master controller 110 checks the signal transmitted from the slave controller 220 and transmits it to the monitoring control device. Then, the monitoring control device 300 checks the unique codes assigned to the master control unit 100 and the slave 200, updates the parking situation information in the entire parking area and outputs them to the display.

In addition, the master controller 110 outputs an acknowledgment signal, and the first switching block 130 and the second switching block 150 phase the power supplied from the power supply means 160 as a positive and negative signal. Outputs the acknowledgment signal to the slave 200 while crossing.
The inverting means 140 inverts the signal output from the master controller 110 and applies it to the second switching block 150. The output signals of the first switching block 130 and the second switching block 150 are turned on and off by the acknowledgment signal output from the master controller 110 to switch the power supplied from the power supply to change the phase. By varying, the acknowledgment signal output from the master controller 110 is included in the power supplied from the power supply means 160.

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The power supplied from the power supply means 160 outputs, for example, 24V power. At this time, when the master controller 110 outputs an acknowledgment signal that is a 5V serial communication signal, the first switching block 130 and the second switching block 150 are turned on and off oppositely by the acknowledgment signal. The phase of the power output from the power supply means 160 is switched so that the positive VCC and the negative GND intersect.

That is, in the present invention, communication between the slave 200 and the master control unit 100 may be performed through a power line supplied with power to the slave 200 installed in each parking area.

Therefore, the first switching block 130 and the second switching block 150 is repeatedly turned on and off by the acknowledgment signal output from the master controller 110, the phase of the power supplied from the power supply means 160 Is variable to transmit the acknowledgment signal to the slave 100. At this time, it is obvious that the signal transmitted to the slave 200 includes a unique code of the slave 200.

Accordingly, the slave 200 receives the acknowledgment signal of the master controller 100 while the first switching means 212 is turned on and off by the signal received from the master controller 100. To apply. The slave controller 220 receives the corresponding signal, checks whether its own code is included, and if it does not match its own code, applies the slave controller 220 to the next slave 200 connected to the same power line.

Accordingly, the slave 200 may confirm that its own transmission signal is transmitted to the master controller 100 through the confirmation signal received from the master controller 100.

In addition, the master controller 110 transmits a signal received from the slave 200 to the monitoring control device 300. And the monitoring control device 300 displays the presence or absence of parking of the vehicle in each parking area through the display installed.

As described above, the present invention illuminates the illumination lamps installed in each of the plurality of parking zones at a brightness intensity of 50% or less of the normal output power, and is parked through the camera 240, the infrared light module 230, and the motion sensor 250. By detecting the movement of vehicles or people in the area, the brightness of the lights can be selectively controlled to prevent unnecessary waste of energy.

In addition, according to the present invention, by installing an alarm light 262 to visually indicate whether parking is possible in each parking area, the vehicle can be parked to facilitate the driver's convenience.

In addition, the present invention can detect the vehicle in the parking lot through the distance sensor 270 in addition to the above-described motion sensor 250 and the camera 240. This will be described below as another embodiment of the present invention, and description of the same components as the above-described embodiment will be omitted.

8 is a block diagram showing a slave in another embodiment of the parking lot management system using the PLC communication method according to the present invention.

Referring to FIG. 8, another embodiment of the present invention differs from the application of the infrared light module 230, the motion sensor 250, and the camera 240 in the above-described embodiment, the motion sensor 250 and the distance sensor 270. ) Was applied. The motion sensor 250 generally detects heat and detects a movement of a vehicle or a person. However, since the motion sensor 250 may malfunction due to an animal or a heating element having a temperature other than a vehicle or a person, the camera 240 is applied at the same time.

Therefore, another embodiment of the present invention improves the accuracy of detection by applying the distance sensor 270 using a laser element after the detection of the heating element by the motion sensor 250. The distance sensor may emit a laser beam toward the bottom of the parking area, and detect whether the vehicle is parked in the parking area through the time until the reflected light is received.

When the slave controller 220 sets and stores the reference distance and receives the motion detection signal of the motion sensor 250, the slave controller 220 drives the distance sensor 270_ to compare the detected distance with the reference distance to the vehicle in the parking area. Or you can judge a person's approach.

According to the detection signal of the distance sensor, the slave controller 220 controls the alarm light 262 and the lamp 261 of the lighting means 260 to visually express the presence or absence of parking of the vehicle through different colors. do.

9 is a flowchart illustrating another embodiment of the parking lot management method using the PLC communication method according to the present invention.

9, another embodiment of the parking lot management method using the PLC communication method of the present invention is a distance sensing step (S21) for detecting a distance change in the parking area after the motion in the parking area is detected, the distance detection The lighting control judging step (S22) for determining whether to control the lighting in comparison with the reference distance set after receiving the signal, and if the detected distance in the parking area in the lighting control judging step (S22) is different from the reference distance, Illumination step (S23) for controlling the brightness, and whether the parking whether the parking or leaving the vehicle in the parking zone (S24), and if the parking or leaving is not detected in the parking determination step (S24) Light brightness control step (S25) to reduce the intensity of the light after the set time, and when the parking or exit of the vehicle is detected by controlling the alarm light to display whether the parking or departure A display step (S27), and a transmission step (S26) for transmitting whether the parking of the vehicle in the parking area to the master control unit (100).

The distance sensing step S21 is a step of receiving the distance sensing signal by driving the distance sensor 270 when the slave controller 220 receives the motion detection signal of the motion sensor 250. The distance sensor 270 is installed for each parking area and emits laser light toward one side or the other side of the parking area from the bottom or one side of the parking area. Therefore, when the vehicle is present in the parking area, the irradiated laser light is reflected and re-received, so that the distance can be detected by calculating the time from light emission to light reception.

The lighting control determination step (S22) is a step in which the slave controller 220 receives the distance detection signal of the distance sensor 270 and compares the stored reference distance with the received detection distance to determine the control of the lighting.

In the lighting step S23, when it is determined that the vehicle enters or exits the parking area in the lighting control determination step S14, the slave controller 220 controls the lighting means 260 to control the lighting means (260). 261) to control the brightness to the brightness of the rated output 100%. The slave controller 220 compares the sensed distance of the distance sensor 270 with the stored reference distance, and if there is a difference, it may be controlled to 100% if the brightness of the current lamp is less than 50% of the rated output.

The parking determination step (S24) is a step in which the slave controller 220 determines whether the vehicle detected in the parking zone is parked or unloaded. The slave controller 220 compares the detected distance of the distance sensor 270 and compares the detected distance with the reference distance (for example, when the vehicle is parked). If there is a difference, the slave controller 220 determines that the vehicle is parked in the parking area. Or it is determined to be released.

The lighting brightness control step (S25) is counting the time after the brightness of the lamp 261 is adjusted to 100% of the rated output in the parking zone in the slave controller 220, parking, leaving or leaving the vehicle. When the set time elapses without access to the control unit, the brightness of the lamp 261 is adjusted to 50% or less.

The alarm lamp display step S27 is a step of displaying whether or not the vehicle is parked and discharged through the alarm lamp 262 by the control of the slave controller 220 in the parking decision determination step S16. The warning light 262 displays the parking available state (eg, green) and the unparkable state (eg, red) in different colors.

The transmitting step (S26) is a step in which the slave controller 220 transmits the state of the parking zone to the master controller 100. In addition, the master controller 110 transmits a signal received from the slave 200 to the monitoring control device 300. And the monitoring control device 300 displays the presence or absence of parking of the vehicle in each parking area through the display installed.

As described above, the present invention displays an installation of an alarm lamp to visually display whether parking is possible in each parking area according to the detection signal of the distance sensor, and indicates whether the vehicle is parked. We can plan.

Although the present invention has been described in detail with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and such modifications and variations belong to the appended claims.

100: master controller 110: master controller
120: reception detection means 121: resistance
122: comparator 123: pulse generator
130: first switching block 140: reversing means
150: second switching block 160: power supply means
200: slave 210: communication means
211: rectification means 212: first switching means
213: second switching means 214: regulator
220: slave controller 230: infrared light module
240: camera 250: motion sensor
260: lighting means 300: monitoring control device

Claims (19)

A slave, each of which is installed in a plurality of divided parking zones, one or more of which are sequentially connected in series so as to control the lighting in the parking zone by detecting the approach of a vehicle and a person;
A master control unit configured to perform bidirectional communication with a power line for supplying power to each group to which the slave is connected; And
It includes a monitoring control device for outputting the parking situation in each parking zone received from the master control unit on the display,
The master control unit is a parking lot management system, characterized in that the supply of communication signals and power can be made at the same time by switching the phase of the power supplied to the slave through the power line so that the positive and negative phase repeatedly cross. The method of claim 1, wherein the slave
A motion sensor for detecting a movement of a vehicle or a person in the parking area;
An infrared light module for outputting infrared light in the parking area when the motion of the motion processor is detected;
A camera for photographing the corresponding area when the infrared light is irradiated in the parking area by the infrared light module;
Lighting means having illumination lamps for outputting visible light in the parking area;
When the motion detection signal of the motion sensor is received, the slave controller for controlling the infrared light module and the camera to photograph the parking zone to compare the previous photographing data and the current photographed data to selectively control the brightness of the lamp; And
A communication means for performing bidirectional communication through a power line,
The communication means
Rectifying means for rectifying power supplied through a power line connected to the master control unit; And
And a regulator for outputting the power rectified by the rectifying means at a constant voltage to supply the camera, the infrared light module, the lighting means, and the motion sensor and the slave controller. The method of claim 1, wherein the slave
A motion sensor for detecting a movement of a vehicle or a person in the parking area;
A distance sensor for detecting a distance of the parking area;
Lighting means including an illumination light for outputting visible light to the parking area and an alarm light for displaying whether the vehicle is parked in the parking area in different colors;
A slave controller which controls the alarm lamp of the lighting means by determining whether the vehicle is parked in the parking area by comparing the detected distance with the reference distance by driving the distance detecting sensor after the motion detection of the motion sensor; And
A communication means for performing bidirectional communication through a power line,
The communication means
Rectifying means for rectifying power supplied through a power line connected to the master control unit; And
And a regulator for outputting the power rectified by the rectifying means with a constant voltage and supplying the lighting means, the motion sensor, the distance sensing sensor, and the slave controller. The method of claim 2 or 3, wherein the communication means
First switching means for switching a communication signal received from the master controller to apply to the slave controller; And
And a second switching means for generating a load on a power line connected to the master controller by shorting a power line connected to the regulator from the rectifying means by being turned on by the transmission signal output from the slave controller. Parking management system using. The method of claim 4, wherein the second switching means
And a transistor connected between the rectifying means and the regulator and turned on when a transmission signal is applied from the slave controller to short the line between the rectifying means and the regulator. The method of claim 1, wherein the master control unit
Power supply means for supplying power through a power line;
A master controller for receiving information including the parking status received from the slave and transmitting the received information to the monitoring controller, and outputting a transmission signal to the slave under control of the monitoring controller;
Inverting means for inverting a transmission signal output from the master controller;
A first switching block which is switched on and off according to a transmission signal output from the master controller and outputs the signal to the slave as a signal in which a positive and a negative phase cross each other by switching power supplied from the power supply means; And
And a second switching block for switching the transmission signal inverted by the inverting means and outputting the switching signal to the slave.
And the first switching block and the second switching block transmit the inverted signal to each other. The method of claim 6, wherein the master control unit
Parking management using the PLC communication method further comprises a receiving detection means for generating a pulse voltage difference generated by the load generated by the power line in the slave to restore the transmission signal of the slave to output to the master controller system. The method of claim 7, wherein the receiving detecting means
A resistor for generating a voltage at both ends by the current generated by the short of the power line;
A comparator for comparing and outputting a voltage difference generated between both ends of the resistor; And
And a pulse generator converting the voltage difference output from the comparator into a pulse and outputting the pulse to the master controller. The method of claim 2 or 3, wherein the lighting means
A parking management system using a PLC communication method in which the brightness of the lamp is selectively controlled by the control of the slave controller according to the detection of the vehicle or the person. In the parking management method using a PLC communication method comprising at least one group having one or more slaves connected in series, and having at least one master control unit connected to each group containing the at least one slave,
A motion detection step of receiving a motion detection signal in which the movement of the vehicle or person is detected in the parking area;
An infrared light emitting step of irradiating infrared light in the parking area where the motion is detected in the motion detection step;
An image analysis step of driving an camera after the infrared light emitting step to take an image or an image in the parking area and compare the image with the reference image or image;
A lighting control judging step of determining whether the brightness of a lamp should be adjusted by checking whether there is a movement of a person or a vehicle in the parking area through the analysis result of the image analyzing step;
In the lighting control determination step, if it is determined that the movement of the vehicle or the person is detected to turn on the brightness of the lamp to illuminate the corresponding parking area at the normal output, the lighting step to turn on the brightness to the rated power;
A parking determination step of detecting whether the vehicle is parked or unloaded in the parking area after the lighting step;
When the parking or the exit of the vehicle is detected, the parking management method using a PLC communication method comprising an alarm light display step of controlling whether the light having a different color to display whether or not parking. The method of claim 10, wherein the parking management method using the PLC communication method
The off-lamp communication step of controlling whether to maintain the brightness of the lamp to less than 50% of the rated output after a set time has elapsed if the movement of the vehicle or person is not detected in the parking determination step; Parking management method using. The method of claim 10, wherein the parking management method using the PLC communication method
And a transmitting step of transmitting, by the master control unit, whether the vehicle is parked in the parking area after the alarm light display step. The method of claim 10, wherein the master control unit and the slave
Since the phase of the power supplied to the slave is transmitted to the slave according to the transmission signal output from the master controller, the PLC communication method performs bidirectional communication with power supply through a power line. Parking management method using. The method of claim 12 or 13, wherein the slave is
Parking management method using a PLC communication method to short-circuit the power line connected to the master control unit to generate a load on the power line to transmit to the master control unit. The method of claim 14, wherein the master control unit
Parking management method using the PLC communication method to restore the original signal transmitted from the slave by converting the voltage difference generated by the load generated in the power line into a pulse. In the parking management method using a PLC communication method comprising at least one group having one or more slaves connected in series, and having at least one master control unit connected to each group containing the at least one slave,
Detecting a distance in the parking area, the distance detecting step of detecting a distance in the parking area;
A lighting control judging step of determining whether to adjust the brightness of a lighting lamp by checking whether the vehicle is parked in the parking lot by comparing the current distance in the parking zone detected in the distance sensing step and the stored reference distance;
If it is determined that the brightness of the lamp to illuminate the parking area to the normal output in the lighting control determination step, the lighting step of turning on the brightness to the rated output brightness;
A parking determination step of detecting whether the vehicle is parked or unloaded in the parking area after the lighting step;
When the parking or the exit of the vehicle is detected, the parking management method using a PLC communication method comprising an alarm light display step of controlling whether the light having a different color to display whether or not parking. The method of claim 16, wherein the parking management method using the PLC communication method
The off-lamp communication step of controlling whether to maintain the brightness of the lamp to less than 50% of the rated output after a set time has elapsed if the movement of the vehicle or person is not detected in the parking determination step; Parking management method using. The method of claim 16, wherein the parking management method using the PLC communication method
And a transmitting step of transmitting, by the master control unit, whether the vehicle is parked in the parking area after the alarm light display step. The method of claim 16, wherein the master control unit and the slave
Since the phase of the power supplied to the slave is transmitted to the slave according to the transmission signal output to the master controller, the bidirectional communication is performed with the supply of power through the power line.
The slave short-circuit the power line connected to the master control unit to generate a load on the power line to transmit to the master control unit parking management method using a PLC communication method.

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