Motion sensor-based lighting control system with linear detection area

Abstract

The present invention relates to a system for automatically controlling lighting by detecting the movement of vehicles and pedestrians at entrances and exits of parking lots, logistics warehouses, etc. More specifically, it relates to a motion sensor-based lighting control system that prevents unnecessary lighting and maximizes energy efficiency by adjusting the sensor's detection area in a streamlined manner. To this end, the present invention utilizes detection technologies such as Doppler sensors, Doppler radar, and radar sensors, and forms a detection area in a specific direction using a directional antenna such as a patch antenna. By doing so, the detection range of vehicles and pedestrians for lighting control is optimized in a streamlined manner within the entrance and exit, thereby enabling effective management of lighting in various environments such as parking lots, logistics warehouses, underpasses, airports, and industrial facilities, and preventing unnecessary power waste. According to the present invention, the sensor detection area is implemented in a streamlined shape to set an optimized detection range according to the shape of the entrance and road. Accordingly, this resolves the problem of unnecessary lighting that occurred in existing technologies and allows lighting to naturally illuminate along the movement paths of vehicles and pedestrians. Through this, unnecessary lighting is prevented in parking lots, logistics warehouses, underground parking lots, etc., and power consumption is reduced by illuminating only the necessary areas.

Description

Technology Field

[0001] The present invention relates to a system for automatically controlling lighting by detecting the movement of vehicles and pedestrians at entrances and exits of parking lots, logistics warehouses, etc. More specifically, it relates to a motion sensor-based lighting control system that prevents unnecessary lighting and maximizes energy efficiency by adjusting the sensor's detection area in a streamlined manner. To this end, the present invention utilizes detection technologies such as Doppler sensors, Doppler radar, and radar sensors, and forms a detection area in a specific direction using a directional antenna such as a patch antenna. By doing so, the detection range of vehicles and pedestrians for lighting control is optimized in a streamlined manner within the entrance and exit, thereby enabling effective management of lighting in various environments such as parking lots, logistics warehouses, underpasses, airports, and industrial facilities, and preventing unnecessary power waste. Background Technology

[0002] Lighting control systems have continuously evolved to ensure efficient energy conservation and user convenience in environments such as parking lots, logistics warehouses, and large-scale facilities. Recently, technologies utilizing sensors to detect the movement of vehicles and pedestrians have been developed to prevent unnecessary lighting while allowing lights to illuminate naturally along the user's path. However, existing technologies have limitations, such as the inability to precisely control the detection area for object movement or to optimize the lighting system by integrating the detected information.

[0003] For example, Korean Registered Patent No. 10-2332067 proposed a technology regarding an LED lighting control device and method using a microwave sensor; however, it has limitations in that the lighting operates only within a fixed detection range due to a lack of a function to flexibly adjust the detection area, rather than illuminating according to the movement paths of vehicles or pedestrians. Consequently, there is a possibility of unnecessary lighting, and there is a disadvantage in that optimal lighting control is difficult depending on the environment because the sensor detection area is fixed.

[0004] Furthermore, Korean Patent Publication No. 10-2023-0093847 describes a smart lighting system utilizing microwave sensors. This technology complements the shortcomings of existing PIR (Photoinfrared) sensor methods and enables lighting to be turned on by tracking the movement path of an object. However, it lacks the capability to precisely and linearly adjust the detection area of ​​individual lights. Additionally, since the lighting control technology employs a movement path prediction method, there is a risk that lights may be turned on in a direction different from the actual movement of vehicles or pedestrians, potentially leading to unnecessary power waste.

[0005] In addition, Korean Patent Publication No. 10-2016-0103408 describes a line lighting device for parking lots that utilizes a microwave sensor to detect the movement of vehicles or people and enables the movement and placement of lighting modules within a track housing. This system wirelessly transmits detected signals to lighting modules to control whether the lights are turned on, and aims to save power by grouping the lighting modules so that the lights are turned on only within the detection range. However, existing technologies have the disadvantage that it is difficult to adjust the detection area in a specific direction because the detection area is set in a circular or radial shape rather than a linear one, and unnecessary lights may be turned on even in areas where lighting is not required if a vehicle or person enters the detection range. Prior art literature

[0006] (Patent Document 0001) KR 10-2332067 B1(Patent Document 0002) KR 10-2023-0093847 A(Patent Document 0003) KR 10-2016-0103408 A The problem to be solved

[0007] The present invention was developed to solve such problems and aims to provide a lighting control system capable of preventing unnecessary lighting by adjusting the sensor's detection area in a streamlined manner and providing a detection range optimized for entrances and movement paths, thereby improving lighting efficiency and maximizing energy savings. To this end, the invention aims to improve upon the limitations of existing circular or radial detection methods by utilizing a patch antenna array to form a streamlined detection area and optimizing the detection range in a specific direction.

[0008] In addition, there is another objective to provide a lighting control system that optimizes the brightness and duration of lighting according to the environment by providing a detection distance adjustment function using remote control means such as a DIP switch, remote control, or smartphone, thereby allowing the detection range to be flexibly adjusted in various environments and maintaining optimal detection performance by considering the length of the entrance / exit path or the movement patterns of vehicles and pedestrians, and by adding a function to adjust the sensor's dimming level and lighting duration.

[0009] Furthermore, another objective is to enable the formation of smarter sensor detection area patterns by applying DSP-based beamforming or sensor detection area width adjustment technology according to characteristics such as the width of the entrance / exit path, thereby allowing the detection width to be dynamically adjusted. means of solving the problem

[0010] To achieve the above objective, a motion sensor-based lighting control system implementing a linear detection area according to the present invention comprises: an antenna unit having a patch antenna array composed of two or more patch antennas, transmitting a signal with a streamlined radiation pattern therefrom, and receiving a reflected signal from an object in response to the transmitted signal; and a sensor unit that generates an RF signal to be transmitted through the antenna unit and processes a reflected signal received from the antenna unit to determine whether a moving object is detected and performs lighting control accordingly, wherein the sensor unit includes a data setting unit and a radiation / detection width adjustment unit, the detection area of ​​the sensor unit is controlled in a streamlined manner, and the detection distance in the direction of entry and exit of the detection area of ​​the sensor unit can be controlled by changing according to sensor sensitivity level data set in the data setting unit while the output of the transmitted signal through the antenna unit is configured to be constant, and the radiation / detection width adjustment unit comprises a digital signal processing module; and a variable gain amplifier for adjusting the detection width of a received signal.and includes a phase shifter, wherein the digital signal processing module generates a control phase value to be applied to each digital signal generated to be transmitted to each antenna according to the detection width level data set in the data setting unit and transmits it to the phase shifter, and the phase shifter adjusts the phase difference between each antenna element of the patch antenna array according to the control phase value, thereby varying the radiation width of the streamlined beam by increasing the phase difference between each antenna element to make the beam narrower or decreasing the phase difference to make the beam wider, and the digital signal processing module calculates the arrival angle of each signal from the arrival time difference or phase difference by comparing each signal, which is a reflected signal received from each antenna of the antenna unit, and determines a control signal intensity value to be applied to a signal corresponding to a specific angle range corresponding to the detection width level data, and the variable gain amplifier prevents lighting malfunction caused by object detection in an adjacent passage by adjusting the signal intensity of the corresponding signal according to the control signal intensity value to adjust the detection width for the received signal, and the sensor sensitivity level data is the detection distance For control purposes, the detection width level data can be set separately for detection width control. According to another aspect of the present invention, a motion sensor-based lighting control system implementing a linear detection area comprises: an antenna unit having a patch antenna array composed of two or more patch antennas, transmitting a signal with a streamlined radiation pattern therefrom, and receiving a reflected signal from an object in response to the transmitted signal;and includes a sensor unit that generates an RF signal to be transmitted through the antenna unit and processes a reflected signal received from the antenna unit to determine whether a moving object is detected and performs lighting control accordingly, wherein the sensor unit includes a data setting unit and a radiation / detection width adjustment unit, wherein the detection area of ​​the sensor unit is controlled in a streamlined manner, and the detection distance in the direction of entry and exit of the detection area of ​​the sensor unit can be controlled by changing according to sensor sensitivity level data set in the data setting unit while the output of the transmitted signal through the antenna unit is configured to be constant, and the radiation / detection width adjustment unit comprises a digital signal processing module; ...and includes a variable gain amplifier, wherein the digital signal processing module calculates a control signal strength value to be applied to a signal generated to be transmitted to each antenna according to the detection width level data set in the data setting unit and transmits it to the variable gain amplifier, and the variable gain amplifier adjusts the amplification level for a specific antenna transmission signal upward or downward according to the control signal strength value, such that if the amplification level is increased, the transmission signal from the corresponding antenna becomes stronger and the detection range in that direction is widened, and if the amplification level is lowered, the transmission signal from the corresponding antenna becomes weaker and the detection range in that direction is narrowed, thereby varying the radiation width of the signal to be transmitted, and the digital signal processing module calculates the arrival angle of each signal from the arrival time difference or phase difference of each signal, which is a reflected signal received from the antenna unit, and determines a control signal strength value to be applied to a signal corresponding to a specific angle range corresponding to the detection width level data, and the variable gain amplifier controls the reception detection width to be narrowed by adjusting the signal strength of the corresponding signal to be attenuated according to the control signal strength value so as not to unnecessarily light up the lighting of the adjacent entrance / exit route. The sensor sensitivity level data is for controlling the detection distance, and the detection width level data is for controlling the detection width.

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[0014] delete

[0015] The above data setting unit is characterized by being configured as a DIP switch or configured to set data by receiving data wirelessly from a user's remote control means.

[0016] The sensor unit is characterized by operating in any one of the following ways: a radar sensor, a Doppler sensor, and a Doppler radar. Effects of the invention

[0017] According to the present invention, the sensor detection area is implemented in a streamlined shape to set an optimized detection range according to the shape of the entrance and road. Accordingly, this resolves the problem of unnecessary lighting that occurred in existing technologies and allows lighting to naturally illuminate along the movement paths of vehicles and pedestrians. Through this, unnecessary lighting is prevented in parking lots, logistics warehouses, underground parking lots, etc., and power consumption is reduced by illuminating only the necessary areas.

[0018] In addition, by including a detection distance adjustment function, users can adjust the detection range via a DIP switch, remote control, or remote settings, thereby optimizing the detection distance according to environmental changes and flexibly setting detection performance in specific areas. Furthermore, by adding a function to adjust the sensor's dimming level and lighting duration, the brightness and duration of the lighting can be optimized according to the environment, which increases the flexibility of lighting control and enables optimal lighting performance in various spaces.

[0019] In addition, by applying technologies such as beamforming to dynamically adjust the detection width, the detection width can be set narrowly in narrow passageways, one-way roads, or specific sections to prevent unnecessary detection, and conversely, the detection width can be expanded in wide open spaces to effectively control lighting over a wider area, thereby minimizing detection blind spots and enabling efficient lighting. Brief explanation of the drawing

[0020] FIG. 1 is a diagram illustrating the detection range of a motion sensor mounted on a conventional sensor light. FIG. 2 is a diagram illustrating the detection range of a motion sensor mounted on a sensor light of the present invention. FIG. 3 is a drawing illustrating the shape of an embodiment of a sensor light equipped with a motion sensor of the present invention. FIG. 4 is a diagram showing the configuration of a motion sensor-based lighting control system implementing a linear sensing area of ​​the present invention. FIG. 5 is a diagram showing an embodiment of a data setting unit of a motion sensor-based lighting control system implementing a linear sensing area of ​​the present invention. FIG. 6 is a flowchart as an example of a process in which a motion sensor-based lighting control system implementing a linear sensing area of ​​the present invention performs lighting control by motion detection. FIG. 7 is a diagram illustrating an embodiment of a detection area according to a sensor sensitivity level set in a motion sensor-based lighting control system implementing a linear detection area of ​​the present invention. FIG. 8 is a diagram illustrating the detection area according to the sensor sensitivity level of FIG. 7 using measured data. FIG. 9 is a diagram showing the configuration in which the radiation / detection width adjustment unit of a motion sensor-based lighting control system implementing a linear detection area of ​​the present invention operates as a radiation width adjustment unit. FIG. 10 is a flowchart of the case where a motion sensor-based lighting control system implementing a linear sensing area of ​​the present invention performs adjustment of the radiation width of an antenna transmission signal during the process of performing lighting control by motion detection. FIG. 11 is a diagram showing the configuration of a motion sensor-based lighting control system implementing a linear sensing area of ​​the present invention when the radiation / sensing width adjustment unit operates as a sensing width adjustment unit. FIG. 12 is a flowchart of the case where a motion sensor-based lighting control system implementing a linear sensing area of ​​the present invention performs adjustment of the detection width of an antenna received signal during the process of performing lighting control by motion detection. FIG. 13 is a drawing illustrating an embodiment of a detection area according to a sensor detection width level set in a motion sensor-based lighting control system implementing a linear detection area of ​​the present invention. Specific details for implementing the invention

[0021] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention. Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely one preferred embodiment of the present invention and do not represent all aspects of the technical spirit of the present invention; therefore, it should be understood that various equivalents and modifications capable of replacing them may exist at the time of filing this application.

[0023] FIG. 1 is a diagram illustrating the detection range of a motion sensor mounted on a conventional sensor light, and FIG. 2 is a diagram illustrating the detection range of a motion sensor mounted on a sensor light of the present invention.

[0024] A device that detects vehicles or pedestrians and controls lighting in an entrance / exit route, such as a logistics warehouse or a parking lot inside a building equipped with a shelf rack (11, 12, 13, 14), has already been commercialized.

[0025] However, in the case of a motion sensor mounted on such a light to detect a vehicle or pedestrian, the detection range is circular and evenly spread in each direction as shown in FIG. 1. Referring to FIG. 1, when a forklift (20) for transporting goods enters the access path between shelf rack 2 (12) and shelf rack 3 (13), the sensor of sensor light 2 (32) detects the forklift (20) and controls the lighting of sensor light 2 (32). However, in this case, since the detection range (34, 35) of the sensors of sensor lights 1 and 2 (31, 32) is circular as shown, the sensor of sensor light 1 (31) in another access path where there is no vehicle entry also detects the forklift (20) and unnecessarily controls the lighting of sensor light 1 (31).

[0026] In contrast, in the case of the motion sensor of the present invention mounted on the light to detect vehicles or pedestrians, the detection range is streamlined in the direction of the entrance / exit path as shown in FIG. 2. Accordingly, referring to FIG. 2, when a forklift (20) for transporting goods enters the entrance / exit path between shelf rack 2 (12) and shelf rack 3 (13), the sensor of sensor light 2 (32) detects the forklift (20) and controls the lighting of sensor light 2 (32). However, in this case, since the detection range (44, 45) of the sensors of sensor lights 1 and 2 (41, 42) is streamlined as shown, the sensor of sensor light 1 (41) in another entrance / exit path where there is no vehicle entry / exit also does not detect the forklift (20), so sensor light 1 (41) is not unnecessarily controlled to be lit.

[0027] The configuration and operation of the motion sensor-based lighting control system (1000) that implements a linear detection area of ​​the present invention, which can improve electrical energy efficiency by controlling the detection area by the sensor in a streamlined manner so that the lighting of other entry / exit routes where there is no entry / exit of vehicles / pedestrians, etc. in a logistics warehouse or parking lot is not unnecessarily turned on, will be described in detail below with reference to FIGS. 3 to 13.

[0029] FIG. 3 is a diagram illustrating the shape of an embodiment of a sensor light (100) equipped with a motion sensor of the present invention, FIG. 4 is a diagram showing the configuration of a motion sensor-based lighting control system (hereinafter referred to as the 'motion sensor-based lighting control system') (1000) that implements a linear detection area of ​​the present invention, FIG. 5 is a diagram showing an embodiment of a data setting unit (1140) of the motion sensor-based lighting control system (1000) of the present invention, and FIG. 6 is a flowchart of an embodiment of the process in which the motion sensor-based lighting control system (1000) of the present invention performs lighting control by motion detection.

[0030] FIG. 4 is a diagram showing the overall configuration of the motion sensor-based lighting control system (1000) of the present invention, wherein the system comprises a sensor unit (1100) and an antenna unit (1200).

[0032] As described with reference to FIG. 2, the antenna unit (1200) transmits a signal through the antenna in such a streamlined radiation pattern so that the detection range of the sensor can be streamlined, and receives the reflected signal. To this end, the present invention is configured to form a streamlined radiation pattern by using a patch antenna array composed of a plurality of patch antennas.

[0033] In the present invention, for example, as described below, the method of adjusting the detection distance of the reflected signal to M1, M2, M3, M4, etc. through the data setting unit (1140) is not done by adjusting the transmission output through the antenna, but by adjusting the sensor sensitivity level. That is, the magnitude of the output is kept constant, and the detection threshold of how weak a received signal can be detected is determined by setting the sensor's sensitivity level for the reflected signal. The higher the sensitivity, the weaker the signal can be detected, thus increasing the detection distance; conversely, the lower the sensitivity, the stronger the signal above a certain level is recognized, thus reducing the detection distance. However, in this case, since the detection width is related to the streamlined pattern according to the configuration of the transmitting patch antenna array, it is difficult to significantly change the detection width solely by adjusting the sensitivity of the sensor.

[0034] In summary, the streamlined radiation pattern of the antenna in the present invention is implemented by configuring a patch antenna array. In this case, it is difficult to significantly reduce or increase the detection width solely by adjusting sensor sensitivity, and sensor sensitivity adjustment primarily affects the detection distance.

[0036] The sensor unit (1100) is equipped with an RF signal generation and transmission unit (1110), an RF signal reception and processing unit (1120), a data setting unit (1140), a lighting control unit (1150), etc., and may further include a radiation / detection width adjustment unit (1130).

[0037] These components are designed to allow the selective use of Doppler sensors, Doppler radar, and radar sensors, and the detection method can be varied depending on the system's function and application environment.

[0038] The sensor unit (1100) detects the movement of vehicles and pedestrians and processes the signals to control the lighting system. This sensor unit can operate in various detection modes, including Doppler sensors, Doppler radar, and radar sensors, and includes the following detailed components.

[0039] The RF signal generation and transmission unit (1110) may include a high-frequency oscillator (1111), a frequency modulator (1112), a D / A converter (1113), and an amplifier (1114).

[0040] The high-frequency oscillator (1111) serves to generate electromagnetic waves (microwaves or millimeter waves) to be transmitted from the sensor unit (1100) (S1010, see FIG. 6). For Doppler sensors, a simple continuous wave (CW) is used, and for Doppler radar and radar sensors, a Frequency Modulated Continuous Wave (FMCW) method may be applied. The transmission of signals for such object detection can be carried out continuously and periodically.

[0041] A frequency modulator (1112) is not required for Doppler sensors, but for Doppler radar and radar sensors, a function to modulate the frequency (S1020) for distance measurement is required.

[0042] The D / A converter (1113) converts the digital signal into an analog RF signal and enables it to be transmitted (S1030).

[0043] The power amplifier (1114) increases the strength of the transmitted RF signal to adjust the detection distance (S1030). A low-power signal is sufficient for a Doppler sensor, but a high-power amplifier may be required for Doppler radar and radar sensors to extend the detection range.

[0044] The amplified RF signal is transmitted through the antenna section (1200) in a streamlined radiation pattern (S1040).

[0045] The RF signal receiving and processing unit (1120) may include a low-noise amplifier (1121), an intermediate frequency converter (1122), an intermediate frequency amplifier (1123), an A / D converter (1124), and a detection determination unit (1125).

[0046] A low-noise amplifier (LNA) (1121) functions to amplify the detection signal received (S1050) from the antenna unit (1200) while minimizing signal loss (S1060) because the signal is very weak.

[0047] An intermediate frequency converter (1122) converts the reflected signal into an intermediate frequency (IF) (S1060) to facilitate signal analysis. Intermediate frequency (IF) is a frequency band that facilitates analysis and processing by converting the signal when it is difficult to directly process a radio frequency (RF) signal. The reason for converting to an intermediate frequency (IF) is that it is difficult to directly process the radio frequency (RF) signal. Through IF conversion, signal amplification and filtering become easier, digital conversion (A / D conversion) performance is improved, and detection accuracy and distance measurement performance are enhanced.

[0048] An intermediate frequency amplifier (IF Amplifier) ​​(1123) further amplifies the IF signal (S1060) to improve signal quality.

[0049] The A / D converter (1124) converts the received analog signal into a digital signal to enable signal processing (S1070).

[0050] The detection judgment unit (1125) analyzes the received signal data to detect whether an object is detected, the speed of the detected object, etc., and determines whether there is an object moving in the entrance / exit path (S1080). At this time, it can determine whether the received signal is a meaningful signal according to the sensor sensitivity level set in the data setting unit (1140). For example, if the sensor sensitivity level is set to M1 mode (see FIG. 7 and FIG. 8), even a weak signal can be determined as a signal detected. Thus, the detection distance is set to be longer.

[0051] The lighting control unit (1150) controls the lighting in a standby state to an on state when there is a moving object, and then starts the lighting maintenance time to the time set in the data setting unit (1140). Additionally, if a moving object is detected while the lighting is already on, the lighting maintenance time is updated and started again to the time set in the data setting unit (1140). Furthermore, if a moving object is not detected and the lighting maintenance time has elapsed, the lighting is controlled to a standby state.

[0053] An example of the data setting unit (1140) of FIG. 4 is shown in FIG. 5.

[0054] FIG. 5(a) shows a case where the data setting unit (1140) is configured as a DIP switch, and FIG. 5(b) shows a case where the data setting unit (1140) can be set remotely by a user.

[0055] The DIP switch of FIG. 5(a) is configured with six setting pins in the form of one embodiment. In this case, for example, two pins (S1 and S2) correspond to setting the sensor sensitivity level, two other pins (S3 and S4) correspond to setting the lighting maintenance time, and two other pins (S5 and S6) correspond to setting the brightness when the light is in a standby state, i.e., setting the dimming operation level, and the setting values ​​can be determined as follows.

[0056] - Sensor sensitivity level setting

[0057] S1 S2 item 0 (ON) 0 (ON) M1 0 (ON) 1 (OFF) M2 1 (OFF) 0 (ON) M3 1 (OFF) 1 (OFF) M4

[0058] - Set lighting duration

[0059] S3 S4 item 0 (ON) 0 (ON) Lights up for 3 minutes 0 (ON) 1 (OFF) Lights up for 1 minute 1 (OFF) 0 (ON) Lights up for 30 seconds 1 (OFF) 1 (OFF) Lights up for 3 seconds

[0060] - Dimming operation level setting

[0061] S5 S6 item 0 (ON) 0 (ON) 50% 0 (ON) 1 (OFF) 30% 1 (OFF) 0 (ON) 10% 1 (OFF) 1 (OFF) OFF

[0063] The DIP switch may be equipped with additional pins as needed. For example, if pins S7 and S8 are provided, pins S7 and S8 may be used to set the brightness level when the light is turned on.

[0065] Figure 5(b) shows the configuration of a data setting unit (1140) in which, for example, a user remotely sets data using a remote control means such as a smartphone or a remote control. A communication module (1141) transmits and receives control signals from the user's remote control means via communication. A data receiving / setting module (1142) can set data for each item from the control signal data received by the communication module. That is, for example, sensor sensitivity level, lighting maintenance time, dimming operation level, lighting maintenance time, etc., as described through a DIP switch, are set using data received from the remote control means. A setting data storage module (1143) stores the data set in this manner.

[0067] The radiation / detection width adjustment unit (1130) serves to adjust the radiation width of a signal to be transmitted through an antenna or to adjust the detection width of a signal received from an antenna. In this case, the data set by the data setting unit (1140) may further include a detection width level, and accordingly, the adjustment of the radiation width of a signal to be transmitted through an antenna or the adjustment of the detection width of a signal received from an antenna follows the detection width level set by the data setting unit (1140).

[0068] As described above, in the present invention, the detection area of ​​the sensor for the reflected signal is formed in a streamlined shape according to the radiation pattern according to the configuration of the patch antenna array of the antenna unit (1200), and accordingly, the detection width of the streamlined shape is mainly determined by the configuration of the patch antenna array, and the sensor sensitivity level adjustment is mainly adjusted by the detection distance of the streamlined shape as described later with reference to FIGS. 7 and 8.

[0069] However, the radiation / detection width adjustment unit (1130) can adjust the width of the antenna radiation pattern or adjust the width of the detection area of ​​the sensor, thereby changing the streamlined shape to be wider or narrower while maintaining the distance of the streamlined shape of the detection area.

[0070] The adjustment of the radiation pattern width of the signal to be transmitted through the antenna will be described later with reference to FIGS. 9 and 10, and the adjustment of the detection area width of the signal received from the antenna will be described later with reference to FIGS. 11 and 12.

[0071] If the radiation / detection width adjustment unit (1130) is not provided, adjustment is only possible according to the sensor sensitivity level set in the data setting unit (1140), and in this case, as described above, mainly only the increase or decrease of the detection distance in the entry / exit direction is possible.

[0073] FIG. 7 is a diagram illustrating an example of a detection area according to a sensor sensitivity level set in the motion sensor-based lighting control system (1000) of the present invention, and FIG. 8 is a diagram illustrating the detection area according to the sensor sensitivity level of FIG. 7 using measured data.

[0074] As previously described in the explanation with reference to FIG. 4, since the detection width is related to the streamlined pattern according to the configuration of the transmitting patch antenna array, it is difficult to significantly change the detection width solely by adjusting the sensitivity of such sensors.

[0075] In the present invention, the output of the transmitted signal through the antenna is configured to be constant. Therefore, the size of the detection area of ​​the reflected signal can be changed according to the sensitivity level setting of the sensor. At this time, forming the radiation pattern of the antenna in a streamlined shape is implemented by configuring a patch antenna array. Accordingly, it is difficult to significantly reduce or widen the detection width solely by adjusting the sensor sensitivity, and the adjustment of sensor sensitivity mainly affects the detection distance.

[0076] As shown in FIGS. 7 and 8, it can be seen that the front-to-back detection distance is longest in the case of level M1, where the sensor sensitivity level set in the data setting unit (1140) is the highest, and the front-to-back detection distance is shortest in the case of level M4, where the sensor sensitivity level is the lowest.

[0077] In the motion sensor-based lighting control system (1000) of the present invention, as described above, regarding the streamlined radiation pattern by the antenna unit (1200), it can be seen that the detection distance in the front-rear direction, which is the direction of entry and exit of the vehicle, is clearly changed by adjusting the sensor sensitivity level of the sensor that detects the reflected signal, as shown in FIGS. 7 and FIGS. 8.

[0078] In addition, the motion sensor-based lighting control system (1000) of the present invention includes a configuration that can also adjust the detection width, as described above with reference to FIG. 4, and this will be described in detail below with reference to FIG. 9 to FIG. 13.

[0080] FIG. 9 is a diagram showing the configuration when the radiation / detection width adjustment unit (1130) of the motion sensor-based lighting control system (1000) of the present invention operates as a radiation width adjustment unit, and FIG. 10 is a flowchart showing the case where the motion sensor-based lighting control system (1000) of the present invention performs radiation width adjustment of an antenna transmission signal during the process of performing lighting control by motion detection.

[0081] In specific environments of entrances and exits such as logistics warehouses or parking lots (narrow passages, entrances, detection of specific directions, etc.), it is necessary to reduce the radiation width to reduce unnecessary detection, while conversely, in wide entrance and exit spaces, it is necessary to expand the radiation width to increase the detection range. The radiation / detection width adjustment unit (1130) of the present invention performs the role of increasing / decreasing the detection range in such width directions. In particular, the embodiments of FIGS. 9 and 10 illustrate cases where the radiation / detection width adjustment unit (1130) adjusts the radiation width of an antenna transmission signal.

[0082] The digital signal processing module (1131) can be composed of, for example, a DSP (Digital Signal Processor) chip.

[0083] The phase shifter (1132) performs the role of adjusting the beam width by adjusting the signal transmitted from each patch antenna element of the antenna section (1200) to have a specific time difference (Phase Delay). That is, for example, it can perform the role of increasing the phase difference between each antenna element to make the beam narrower, or conversely, reducing the phase difference between each antenna element to make the beam wider.

[0084] In this case, the digital signal processing module (1131) generates a phase value to be adjusted for each digital signal generated to be transmitted to each frequency-modulated (S1020, see FIG. 10) antenna and transmits it to the phase shifter (1132). This adjustment phase value can be generated as a different value for each antenna's transmission signal, and is calculated and generated according to the detection width level data set in the data setting unit (1140).

[0085] The phase shifter (1132) receives a signal that has been amplified (S1030) by converting a digital signal generated to be transmitted to each antenna into an analog signal (D / A conversion), and converts a control phase value received from a digital signal processing module (1131) into an analog value. Accordingly, the control phase value generated for each analog signal for each antenna is applied to generate an analog signal with a changed phase to be transmitted to each antenna (S1031), and this is transmitted to each antenna to be transmitted (S1040).

[0087] The variable gain amplifier (1133) controls the radiation width by varying the strength of the signal transmitted to each antenna. When the amplification level of the variable gain amplifier (1133) for a specific antenna transmission signal is increased, a strong signal is transmitted from that antenna, widening the detection range in that direction; conversely, when the amplification level for a specific antenna transmission signal is lowered, the signal transmitted from that antenna becomes weaker, narrowing the detection range. In this way, the radiation width of the antenna transmission signal can be controlled.

[0088] In this case, the digital signal processing module (1131) generates a signal strength value to be adjusted for each digital signal generated to be transmitted to each antenna that is frequency-modulated (S1020, see FIG. 10) and transmits it to the variable gain amplifier (1133). This adjustment signal strength value can be generated as a different value for each antenna's transmission signal, and is calculated and generated according to the detection width level data set in the data setting unit (1140). The variable gain amplifier (1133) receives the signal amplified (S1030) by converting the digital signal generated to be transmitted to each antenna into an analog signal (D / A conversion), and converts the adjustment signal strength value received from the digital signal processing module (1131) into an analog value. Accordingly, the adjustment signal strength value generated for each analog signal for each antenna is applied to generate an analog transmission signal with a changed signal strength to be transmitted to each antenna (S1031), and this is transmitted to each antenna to be transmitted (S1040).

[0089] The radiation width adjustment unit (1130) can selectively implement a method of adjusting the radiation width of an antenna transmission signal by selectively providing either a phase shifter (1132) or a variable gain amplifier (1133) to adjust the phase differently for each antenna transmission signal or adjust the signal strength differently for each antenna transmission signal.

[0091] FIG. 11 is a diagram showing the configuration when the radiation / detection width adjustment unit (1130) of the motion sensor-based lighting control system (1000) of the present invention operates as a detection width adjustment unit, and FIG. 12 is a flowchart showing the case where the motion sensor-based lighting control system (1000) of the present invention performs detection width adjustment of an antenna reception signal during the process of performing lighting control by motion detection.

[0092] The embodiments of FIGS. 11 and 12 illustrate cases where the radiation / detection width adjustment unit (1130) adjusts the width of the detection area of ​​the received reflected signal.

[0093] The digital signal processing module (1131) can be composed of, for example, a DSP chip.

[0094] The digital signal processing module (1131) receives the A / D converted signal (S1070) for each signal received from each patch antenna of the antenna unit (1200), compares each of these signals to calculate the arrival time difference or phase difference of each signal, and can calculate the arrival angle of each signal from this. Accordingly, a control signal strength value can be determined to adjust the signal strength for a signal corresponding to a specific angle range, and this is calculated and generated according to the detection width level data set in the data setting unit (1140).

[0095] The determined control signal strength value is transmitted to the variable gain amplifier (1133), and the variable gain amplifier (1133) can adjust the signal strength of the corresponding signal according to the control value to adjust the detection width of the received signal (S1071).

[0097] FIG. 13 is a diagram illustrating an example of a detection area according to a sensor detection width level set in the motion sensor-based lighting control system (1000) of the present invention.

[0098] As shown in FIG. 13, it can be seen that the detection width is widest in the case of L1 level, where the sensor detection width level set in the data setting unit (1140) is set to the highest, and the detection width is narrowest in the case of L4 level, where the sensor sensitivity level is set to the lowest. Explanation of the symbols

[0099] 11, 12, 13, 14 : Shelf Rack 20 : Forklift 31 : Conventional sensor lighting 1 32 : Conventional sensor lighting 2 33 : Conventional sensor lighting 3 34: Detection range of the sensor mounted on conventional sensor lighting 1 35 : Detection range of the sensor mounted on conventional sensor lighting 2 41 : Sensor lighting of the present invention 1 42 : Sensor lighting of the present invention 2 43 : Sensor lighting of the present invention 3 44: Detection range of the sensor mounted on the sensor illumination 1 of the present invention 45: Detection range of the sensor mounted on the sensor illumination 2 of the present invention 100 : Sensor light 1000: Motion sensor-based lighting control system implementing a linear detection area 1100 : Sensor section 1110: RF signal generation and transmission unit 1120: RF signal reception and processing unit 1130 : Radiation / Detection Width Adjustment Unit 1140 : Data setting section 1150 : Lighting control unit 1200 : Antenna section

Claims

Claim 1 A motion sensor-based lighting control system implementing a linear detection area, comprising: an antenna unit having a patch antenna array composed of two or more patch antennas to transmit a signal with a streamlined radiation pattern therefrom and to receive a reflected signal from an object in response to the transmitted signal; and a sensor unit that generates an RF signal to be transmitted through the antenna unit and processes a reflected signal received from the antenna unit to determine whether a moving object is detected and performs lighting control accordingly, wherein the sensor unit includes a data setting unit and a radiation / detection width adjustment unit, wherein the detection area of ​​the sensor unit is controlled in a streamlined manner, and the detection distance in the direction of entry and exit of the detection area of ​​the sensor unit is controllable by changing according to sensor sensitivity level data set in the data setting unit while the output of the transmitted signal through the antenna unit is configured to be constant, and wherein the radiation / detection width adjustment unit includes a digital signal processing module; and a variable gain amplifier for adjusting the detection width of a received signal.and, including a phase shifter, the digital signal processing module generates a control phase value to be applied to each digital signal generated to be transmitted to each antenna according to the detection width level data set in the data setting unit and transmits it to the phase shifter; the phase shifter adjusts the phase difference between each antenna element of the patch antenna array according to the control phase value, thereby increasing the phase difference between each antenna element to make the beam narrower or decreasing the phase difference to make the beam wider, thereby varying the radiation width of the streamlined beam; the digital signal processing module compares each signal, which is a reflected signal received from each antenna of the antenna unit, calculates the arrival angle of each signal from the arrival time difference or phase difference, and determines a control signal intensity value to be applied to a signal corresponding to a specific angle range corresponding to the detection width level data; the variable gain amplifier adjusts the signal intensity of the corresponding signal according to the control signal intensity value to adjust the detection width for the received signal, thereby preventing lighting malfunction caused by object detection in an adjacent passage; and the sensor sensitivity level data is the detection distance A motion sensor-based lighting control system implementing a linear sensing area, wherein the sensing width level data is for control and can be set separately from each other as for sensing width control. Claim 2 A motion sensor-based lighting control system implementing a linear detection area, comprising: an antenna unit having a patch antenna array composed of two or more patch antennas to transmit a signal with a streamlined radiation pattern therefrom and to receive a reflected signal from an object in response to the transmitted signal; and a sensor unit that generates an RF signal to be transmitted through the antenna unit and processes the reflected signal received from the antenna unit to determine whether a moving object is detected and performs lighting control accordingly, wherein the sensor unit includes a data setting unit and a radiation / detection width adjustment unit, wherein the detection area of ​​the sensor unit is controlled in a streamlined manner, and the detection distance in the direction of entry and exit of the detection area of ​​the sensor unit is controllable by changing according to sensor sensitivity level data set in the data setting unit while the output of the transmitted signal through the antenna unit is configured to be constant, and the radiation / detection width adjustment unit comprises a digital signal processing module;...and includes a variable gain amplifier. The digital signal processing module calculates a control signal strength value to be applied to a signal generated to be transmitted to each antenna according to the detection width level data set in the data setting unit and transmits it to the variable gain amplifier. The variable gain amplifier adjusts the amplification level of a specific antenna transmission signal upward or downward according to the control signal strength value. If the amplification level is increased, the transmission signal from the corresponding antenna becomes stronger, thereby widening the detection range in that direction. If the amplification level is lowered, the transmission signal from the corresponding antenna becomes weaker, thereby narrowing the detection range in that direction. By doing so, the radiation width of the signal to be transmitted is varied. The digital signal processing module calculates the arrival angle of each signal from the arrival time difference or phase difference of each signal, which is a reflected signal received from the antenna unit, and determines a control signal strength value to be applied to a signal corresponding to a specific angle range corresponding to the detection width level data. The variable gain amplifier adjusts the reception detection width narrowly by adjusting the signal strength of the corresponding signal to attenuate according to the control signal strength value, thereby preventing the lighting of adjacent entrance / exit routes from being unnecessarily illuminated. A motion sensor-based lighting control system implementing a linear detection area, wherein the sensor sensitivity level data is for controlling the detection distance and the detection width level data is for controlling the detection width. Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 A motion sensor-based lighting control system implementing a linear sensing area, characterized in that, in claim 1 or claim 2, the data setting unit is configured to be composed of a DIP switch or configured to set data by receiving data wirelessly from a user's remote control means. Claim 7 A motion sensor-based lighting control system implementing a linear detection area, wherein, in claim 1 or claim 2, the sensor unit operates in any one of a radar sensor, a Doppler sensor, and a Doppler radar.

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