Pedestrian traffic light signal analyzer / controller

Abstract

Disclosed is a traffic light signal analyzer / controller which measures and analyzes the status (on, off, or blinking) of the green and red lights of a pedestrian traffic light head by means of an optical measurement sensor, transmits a device control signal, and transmits traffic light failure information to a management server, and thus improves convenience and economic feasibility.

Description

Pedestrian traffic light signal analysis controller

[0001] The present invention relates to a traffic light signal analysis controller that measures and analyzes a pedestrian signal and transmits a control signal, and more specifically, to a traffic light signal analysis controller that increases convenience and economy by measuring and analyzing the flashing states (ON, OFF, BLINK) of the green and red signals of a pedestrian signal using a light measurement sensor and transmitting a device control signal.

[0002] Conventional audible signals and in-ground pedestrian signal controllers installed at crosswalks for the visually impaired measured the current flowing through the green and red lights of pedestrian signals to determine their flashing status (on, off, blink). Therefore, they have limitations: they can misdetect current levels in the event of a current leak or surge, sending false signals and increasing the risk of accidents.

[0003] Furthermore, the number of crosswalk safety systems has been increasing recently, and the demand for in-ground pedestrian signals is growing significantly. Consequently, the construction costs for wiring between pedestrian signals or traffic signal controllers and in-ground pedestrian signal controllers are also expected to increase significantly.

[0004] In addition, since the problem of pedestrian signal failure is directly related to pedestrian safety, a system that quickly determines and manages the presence or absence of a failure is necessary.

[0005] The matters described in the background art above are intended to help understand the background of the invention and may include matters that are not publicly disclosed prior art.

[0006] The present invention has been proposed to address the aforementioned issues. A traffic light signal analysis controller can receive pedestrian signal information by measuring the light source of a pedestrian signal using a light measurement sensor. This prevents signal misdetection caused by conventional current abnormalities, thereby enhancing safety.

[0007] In addition, since it is a method of measuring by attaching or installing it to a pedestrian signal light rather than receiving signals through wires from a conventional traffic signal controller or pedestrian signal light, the construction cost for wiring is also greatly reduced, which can increase convenience and economy.

[0008] Additionally, it is expected to be safe and efficient because it measures the blinking status (ON, OFF, BLINK) of the pedestrian signal light with a light measurement sensor, determines whether there is a malfunction, and sends it to the management server.

[0009] In order to achieve the above object, a pedestrian traffic light signal analysis controller according to an embodiment of the present invention is a traffic light signal analysis controller that measures and analyzes the blinking states (ON, OFF, BLINK) of a green signal light and a red signal light of a pedestrian traffic light, and may include a first light measurement sensor installed near the front of the green signal light of the pedestrian traffic light to measure the blinking state (ON, OFF, BLINK) of a green signal light source, a second light measurement sensor installed near the front of the red signal light of the pedestrian traffic light to measure the blinking state (ON, OFF, BLINK) of a red signal light source, and an analysis module that receives and analyzes a green signal light measurement signal from the first light measurement sensor and receives and analyzes a red signal light measurement signal from the second light measurement sensor.

[0010] The traffic light signal analysis controller may include an analysis module that receives a traffic light flashing analysis signal from the analysis module and transmits a device control signal.

[0011] The analysis module may be characterized in that it analyzes a green traffic light photometric signal or a red traffic light photometric signal and generates a traffic light failure signal when it determines that one or more pedestrian traffic lights do not blink for a predetermined period of time or longer.

[0012] The traffic light signal analysis controller may include a wireless communication module that receives a traffic light failure signal from the analysis module and transmits traffic light failure information to a management server.

[0013] The first light measurement sensor may include a first color sensor installed on the front cover of the green traffic light and photographing the green traffic light light source.

[0014] The second light measurement sensor may include a second color sensor installed on the front cover of the red traffic light and photographing the red traffic light light source.

[0015] The first light measurement sensor may include a first illuminance sensor that measures the illuminance of a green traffic light source.

[0016] The second light measurement sensor may include a second illuminance sensor that measures the illuminance of the red traffic light source.

[0017] It may be characterized in that at least one of the first light sensor and the second light sensor is installed on an LED cover of a pedestrian signal light corresponding to a spacing position between a plurality of LED lamps installed on the front of the pedestrian signal light.

[0018] At least one of the first light sensor and the second light sensor may be characterized in that the light sensor measurement direction is directed toward the pedestrian traffic light and includes a light sensor cover that covers the side and back of the light sensor to block external light other than the pedestrian traffic light light source.

[0019] The traffic light signal analysis controller includes a first light measurement sensor cable having one end connected to the traffic light signal analysis controller and the other end connected to the first light measurement sensor to transmit a green traffic light light measurement signal of the first light measurement sensor to the analysis module, and at least a portion of the first light measurement sensor cable may include a green-colored sheathed cable.

[0020] The traffic light signal analysis controller includes a second light measurement sensor cable having one end connected to the traffic light signal analysis controller and the other end connected to a second light measurement sensor to transmit a red traffic light light measurement signal of the second light measurement sensor to the analysis module, and at least a portion of the second light measurement sensor cable may include a red-colored sheathed cable.

[0021] According to the present invention, a traffic light signal analysis controller can measure the light source of a pedestrian signal using a light measurement sensor, thereby preventing a signal misdetection phenomenon caused by a conventional current abnormality, thereby enhancing safety.

[0022] In addition, since it is installed on the pedestrian signal light cover or attached to the LED cover of the pedestrian signal light to measure the light source of the pedestrian signal light rather than receiving signals through wires from the conventional traffic signal controller or pedestrian signal light, the construction cost for wiring is also greatly reduced, which has the effect of increasing convenience and economy.

[0023] Additionally, it has the effect of increasing safety and convenience because it measures the blinking status (ON, OFF, BLINK) of the pedestrian signal light with a light measurement sensor to determine whether there is a malfunction and transmits the signal light malfunction information to the management server.

[0024] FIG. 1 is a drawing for explaining a traffic light signal analysis controller according to one embodiment of the present invention.

[0025] FIG. 2 is a block diagram illustrating a traffic light signal analysis controller according to one embodiment of the present invention.

[0026] Fig. 3 is a drawing for explaining the traffic light signal analysis controller of Fig. 1.

[0027] FIG. 4 is a perspective view showing a traffic light signal analysis controller having a color sensor attached to a pedestrian signal light according to one embodiment of the present invention.

[0028] FIG. 5 is a side view showing a traffic light signal analysis controller having a color sensor attached to a pedestrian signal light according to one embodiment of the present invention.

[0029] FIG. 6 is a perspective view showing a traffic light signal analysis controller having a light sensor attached to a pedestrian signal light according to one embodiment of the present invention.

[0030] Figures 7 and 8 are enlarged views of Figure 6.

[0031] FIG. 9 is a side view showing a traffic light signal analysis controller having a light sensor attached to a pedestrian signal light according to one embodiment of the present invention.

[0032] Figure 10 is an enlarged view of Figure 9.

[0033] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0034] These examples are provided to more fully illustrate the present invention to those skilled in the art. The following examples may be modified in various ways, and the scope of the present invention is not limited to the examples described below. Rather, these examples are provided to further faithfully and completely convey the spirit of the present invention.

[0035] The terminology used herein is used to describe specific embodiments and is not intended to limit the present invention. In addition, the singular form in this specification may include the plural form unless the context clearly indicates otherwise. It should be understood that the terms "comprise," "include," and "have" in this application are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof of the invention, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0036] In the description of the embodiments, when each layer (film), region, pattern or structure is described as being formed "on" or "under" the substrate, each layer (film), region, pad or pattern, "on" and "under" include both being formed "directly" or "indirectly" through another layer. In addition, the reference for above or below each layer is, in principle, based on the drawing.

[0037] The drawings are intended solely to facilitate understanding of the invention and should not be construed as limiting the scope of the invention. Furthermore, relative thicknesses, lengths, and sizes in the drawings may be exaggerated for convenience and clarity of explanation.

[0038] The connection of the traffic light signal analysis controller (1) and the floor pedestrian signal light (81) in the drawing according to one embodiment of the present invention is only shown as an example, and the device connected to the traffic light signal analysis controller (1) is not limited to the floor pedestrian signal light (81).

[0039] In addition, the first light measurement sensor (11) and the second light measurement sensor (12) in the drawing are shown as being located in front of the green traffic light (91) and the red traffic light (92) as an example, and are not limited to the locations in the drawing.

[0040] In addition, the first color sensor (111), the second color sensor (121), the first illuminance sensor (112) and the second illuminance sensor (122) belonging to the first light measurement sensor (11) and the second light measurement sensor (12) in the drawing are shown as an example to be located in front of the green traffic light (91) and the red traffic light (92), and are not limited to the locations in the drawing.

[0041] In addition, although the first light measurement sensor (11), the second light measurement sensor (12), the first light measurement sensor cable (16), and the second light measurement sensor cable (17) are expressed as separate components not included in the traffic light signal analysis controller (1), the first light measurement sensor (11), the second light measurement sensor (12), the first light measurement sensor cable (16), and the second light measurement sensor cable (17) are components included in the traffic light signal analysis controller (1).

[0042] Additionally, the first light measurement sensor (11) includes a first color sensor (111) and a first illuminance sensor (112), and the second light measurement sensor (12) includes a second color sensor (121) and a second illuminance sensor (122).

[0043] FIG. 1 is a drawing for explaining a traffic light signal analysis controller (1) according to one embodiment of the present invention.

[0044] As illustrated in Fig. 1, the traffic light signal analysis controller (1) is a traffic light signal analysis controller that measures and analyzes the flashing states (ON, OFF, BLINK) of the green signal light (91) and the red signal light (92) of the pedestrian signal light (9) and transmits a device control signal (D). The traffic light signal analysis controller (1) is a controller that can be connected to devices that receive and output pedestrian signal signals (H) of pedestrian signal lights, such as floor pedestrian signal lights (81), audible signals for the visually impaired, and pedestrian signal remaining time indicators.

[0045] The traffic light signal analysis controller (1) includes a first light measurement sensor (11), a second light measurement sensor (12), an analysis module (13), a control module (14), a wireless communication module (15), a first light measurement sensor cable (16), and a second light measurement sensor cable (17).

[0046] A traffic light signal analysis controller (1) measures the blinking state (ON, OFF, BLINK) of a green traffic light (91) light source with a first light measurement sensor (11) and transmits a green traffic light light measurement signal (A) to an analysis module (13) via a first light measurement sensor cable (16), and measures the blinking state (ON, OFF, BLINK) of a red traffic light (92) light source with a second light measurement sensor (12) and transmits a red traffic light light measurement signal (B) to an analysis module (13) via a second light measurement sensor cable (17). The analysis module (13) receives and analyzes the green traffic light light measurement signal (A) and the red traffic light light measurement signal (B) and transmits a traffic light blinking analysis signal (C) to a control module (14).

[0047] The first optical measurement sensor cable (16) is connected at one end to the traffic light signal analysis controller (1) and at the other end to the first optical measurement sensor (11) to transmit the green traffic light optical measurement signal (A) of the first optical measurement sensor (11) to the analysis module (13). At least a portion of the first optical measurement sensor cable (16) may be covered with a green color. The green color covering is applied to a portion of the first optical measurement sensor cable (16) and has the effect of preventing incorrect connection of the first optical measurement sensor cable (16) and the second optical measurement sensor cable (17) by increasing the intuitiveness during installation. Since incorrect connection of the cables may result in transmitting an incorrect signal, it may be effective to increase the intuitiveness and visibility of the cables. However, in order not to affect the pedestrian signal light (9) and the green signal light (91), a color of a similar series or a dark series may be applied to the overlapping portion of the pedestrian signal light (9) and the green signal light (91) so as not to interfere with the visibility of the pedestrian signal light (9) and the green signal light (91).

[0048] The second optical measurement sensor cable (17) is connected at one end to the traffic light signal analysis controller (1) and at the other end to the second optical measurement sensor (12) to transmit the red traffic light optical measurement signal (B) of the second optical measurement sensor (12) to the analysis module (13). At least a portion of the second optical measurement sensor cable (17) may be a red-colored covering cable. The red-colored covering is applied to a portion of the second optical measurement sensor cable (17) cable, which has the effect of increasing the intuitiveness during installation and preventing the incorrect connection of the first optical measurement sensor cable (16) and the second optical measurement sensor cable (17). Since incorrect connection of cables may result in transmitting an incorrect signal, it may be effective to increase the intuitiveness and visibility of the cables. However, in order not to affect the pedestrian signal light (9) and the red signal light (92), a color of a similar series or a dark series may be applied to the overlapping portion of the pedestrian signal light (9) and the red signal light (92) so as not to interfere with the visibility of the pedestrian signal light (9) and the red signal light (92).

[0049] The first optical measurement sensor cable (16) and the second optical measurement sensor cable (17) are omitted in the drawing, but are connected to the traffic light signal analysis controller (1).

[0050] The first optical measurement sensor cable (16) and the second optical measurement sensor cable (17) may be installed in a buried form in the green signal light (91) and the red signal light (92) or installed on the exterior of the pedestrian signal light (9), and may be installed so as not to affect the exterior or flashing of the green signal light (91) and the red signal light (92) as much as possible. The power for driving the signal analysis controller (1) may be connected to an existing power source installed on the pedestrian signal light pole (95).

[0051] The traffic light signal analysis controller (1) detects pedestrian signal information (G) of a pedestrian signal using a light measuring sensor, thereby preventing the phenomenon of false detection of pedestrian signals due to abnormal current in the past. In addition, since it is a method of measuring the light source of the pedestrian signal (9) by being attached to the pedestrian signal cover or the LED cover (943) of the pedestrian signal (9) rather than receiving the signal through a wire with the pedestrian signal (9) or the traffic signal controller (6), the construction cost for wiring is also greatly reduced, thereby increasing convenience and economy. In addition, by measuring the blinking state (ON, OFF, BLINK) of the pedestrian signal (9) to determine whether there is a failure and transmitting traffic light failure information (F) to the management server (7), safety and convenience can be improved.

[0052] FIG. 2 and FIG. 3 are block diagrams for explaining a traffic light signal analysis controller (1) according to one embodiment of the present invention.

[0053] Referring to FIGS. 2 and 3, a first light measurement sensor (11) attached to the front of a green traffic light (91) measures the light source of a green traffic light (91) and transmits a green traffic light light measurement signal (A) to an analysis module (13), and a second light measurement sensor (12) attached to the front of a red traffic light (92) measures the light source of a red traffic light (92) and transmits a red traffic light light measurement signal (B) to an analysis module (13). The analysis module (13) analyzes the green traffic light light measurement signal (A) and the red traffic light light measurement signal (B) and transmits a traffic light flashing analysis signal (C) to a control module (14). The control module (14) controls the traffic light flashing analysis signal (C) and transmits a device control signal (D) to a floor pedestrian signal (81). The analysis module (13) analyzes the green traffic light optical measurement signal (A) or the red traffic light optical measurement signal (B) and, if at least one of the two abnormal blinking states (for example, a phenomenon in which the green traffic light (91) or the red traffic light (92) continues to blink, a phenomenon in which the brightness of the green traffic light (91) or the red traffic light (92) decreases by 20% or more, a phenomenon in which ON, OFF, and BLINK of the green traffic light (91) or the red traffic light (92) are not detected) is detected, the analysis module determines that there is a malfunction and transmits a traffic light malfunction signal (E) to the wireless communication module (15). In addition, if it is determined that at least one pedestrian signal light (9) among the green traffic light optical measurement signal (A) or the red traffic light optical measurement signal (B) does not blink for a predetermined period of time (a period of time set by the management server (7), for example, 5 minutes), the analysis module transmits a traffic light malfunction signal (E) to the wireless communication module (15). The wireless communication module (15) receives a traffic light failure signal (E) from the analysis module (13) and transmits traffic light failure information (F) to the management server (7).

[0054] Although the first light measurement sensor (11), the second light measurement sensor (12), the first light measurement sensor cable (16), and the second light measurement sensor cable (17) are expressed as separate components not included in the traffic light signal analysis controller (1), the first light measurement sensor (11), the second light measurement sensor (12), the first light measurement sensor cable (16), and the second light measurement sensor cable (17) are components included in the traffic light signal analysis controller (1).

[0055] Since pedestrian signal failures are directly linked to pedestrian safety and even life, a system capable of real-time detection and management of failures is necessary. According to one embodiment of the present invention, real-time management is possible by transmitting signal signal failure information (F) to a management server (7) using a wireless communication module (15), thereby maximizing pedestrian safety and administrator convenience.

[0056] FIG. 4 is a perspective view showing a traffic light signal analysis controller having a color sensor attached to a pedestrian signal light according to one embodiment of the present invention.

[0057] Referring to Fig. 4, the first color sensor (111) is installed in a green traffic light cover (931) and the second color sensor (121) is installed in a red traffic light cover (932). The traffic light signal analysis controller (1) is installed in a pedestrian traffic light pole (95). The first color sensor (111) photographs the green traffic light (91) light source and transmits a green traffic light light measurement signal (A) to the analysis module (13). The second color sensor (121) photographs the red traffic light (92) light source and transmits a red traffic light light measurement signal (B) to the analysis module (13).

[0058] The first color sensor (111) and the second color sensor (121) include not only color sensors that detect RGB values ​​(detectors that detect the wavelength of light emitted or reflected by an object to determine color. A device that uses a MOS-type camera or other light-receiving element using a CCD, processes the output by converting the wavelength into voltage, and determines color), but also devices that detect color by taking pictures with a camera.

[0059] FIG. 5 is a side view showing a traffic light signal analysis controller having a color sensor attached to a pedestrian signal light according to one embodiment of the present invention.

[0060] Referring to Fig. 5, the first color sensor (111) is installed in the green traffic light cover (931) and the second color sensor (121) is installed in the red traffic light cover (932). The first color sensor (111) photographs the green traffic light (91) light source and transmits a green traffic light light measurement signal (A) to the analysis module (13). The second color sensor (121) photographs the red traffic light (92) light source and transmits a red traffic light light measurement signal (B) to the analysis module (13).

[0061] FIG. 6 is a perspective view showing a traffic light signal analysis controller having a light sensor attached to a pedestrian signal light according to one embodiment of the present invention.

[0062] Referring to Fig. 6, the first illuminance sensor (112) is installed in the LED cover (943) of the green signal light (91), and the second illuminance sensor (122) is installed in the LED cover (943) of the red signal light (92). The signal analysis controller (1) is installed in the pedestrian signal light pole (95). The first illuminance sensor (112) measures the illuminance of the light source of the green signal light (91) and transmits a green signal light measurement signal (A) to the analysis module (13). The second illuminance sensor (122) measures the illuminance of the light source of the red signal light (92) and transmits a red signal light measurement signal (B) to the analysis module (13).

[0063] The first illuminance sensor (112) and the second illuminance sensor (122) are sensors that measure the ambient brightness and send it as an input value. At least one of the first illuminance sensor (112) and the second illuminance sensor (122) is characterized in that it is installed in an LED cover (943) corresponding to a spacing position between a plurality of LED lamps installed on the front of the pedestrian signal light (9), and the illuminance sensor measurement direction may be characterized in that it includes an illuminance sensor cover (100) that faces the pedestrian signal light and covers the side and back of the illuminance sensor to block external light other than the light source of the pedestrian signal light (9). In addition, the illuminance sensor cover (100) may be applied with a color of a similar series or a dark series of colors to the parts of the green signal light (91) and the red signal light (92) of the pedestrian signal light (9) to which the illuminance sensor cover (100) is attached so as not to obstruct the visibility of the pedestrian signal light (9), the green signal light (91), and the red signal light (92).

[0064] Figures 7 and 8 are enlarged views of Figure 6.

[0065] Referring to Fig. 7, which is an enlarged view of part A' of Fig. 6, the first illuminance sensor (112) measures the illuminance of a green LED (941) and transmits a green traffic light light measurement signal (A) to the traffic light signal analysis controller (1) via the first light measurement sensor cable (16). The first illuminance sensor (112) is installed so as not to affect the blinking and visibility of the green LED (941).

[0066] Referring to Fig. 8, which is an enlarged view of part B' of Fig. 6, the second light sensor (122) measures the light intensity of a red LED (942) and transmits a red traffic light light measurement signal (B) to the traffic light signal analysis controller (1) via the second light measurement sensor cable (17). The second light sensor (122) is installed so as not to affect the blinking and visibility of the red LED (942).

[0067] FIG. 9 is a side view showing a traffic light signal analysis controller having a light sensor attached to a pedestrian signal light according to one embodiment of the present invention.

[0068] Referring to Fig. 9, the first illuminance sensor (112) is installed in the LED cover (943) of the green signal light (91), and the second illuminance sensor (122) is installed in the LED cover (943) of the red signal light (92). The first illuminance sensor (112) measures the illuminance of the green LED (941) and transmits a green signal light optical measurement signal (A) to the signal light analysis controller (1) via the first optical measurement sensor cable (16). The second illuminance sensor (122) measures the illuminance of the red LED (942) and transmits a red signal light optical measurement signal (B) to the signal light analysis controller (1) via the second optical measurement sensor cable (17).

[0069] The first illuminance sensor (112) and the second illuminance sensor (122) are installed on the LED cover (943) corresponding to the spacing between the multiple LED lamps installed on the front of the pedestrian signal light (9). Therefore, they can be installed without affecting the appearance or flashing of the green signal light (91) and the red signal light (92). This can increase the convenience of wiring work and economic efficiency due to cost reduction.

[0070] Figure 10 is an enlarged view of Figure 9.

[0071] Referring to Fig. 10, which is an enlarged view of part C' of Fig. 9, the second light sensor (122) may be characterized by being installed in an LED cover (943) corresponding to a spacing position between the red LED (942) lamps of the red signal light (92). Therefore, it can be installed without affecting the appearance or blinking of the red LED (942). The light sensor cover (100) can block external light other than the light source, thereby reducing malfunction of signal detection and increasing safety. In addition, the light sensor cover (100) can be applied with a color of a similar series or a dark series of colors to the parts of the green signal light (91) and the red signal light (92) of the pedestrian signal light (9) to which the light sensor cover (100) is attached, so as not to interfere with the visibility of the pedestrian signal light (9), the green signal light (91), and the red signal light (92).

[0072] The above description is merely an illustrative illustration of the technical idea of ​​the present invention, and those skilled in the art will appreciate that various modifications and variations can be made without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the technical idea of ​​the present invention, and the scope of the technical idea of ​​the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

[0073] The present invention relates to a traffic light signal analysis controller that measures and analyzes a pedestrian signal and transmits a control signal, and more specifically, to a traffic light signal analysis controller that increases convenience and economy by measuring and analyzing the flashing states (ON, OFF, BLINK) of the green and red signals of a pedestrian signal using a light measurement sensor and transmitting a device control signal.

Claims

1. A traffic light signal analysis controller that measures, analyzes, and controls the flashing status of the green and red traffic lights of a pedestrian signal. A first light measuring sensor installed near the front of the green signal light of a pedestrian signal light and measuring the blinking state of the green signal light source; A second light measuring sensor installed near the front of the red signal light of the pedestrian signal light to measure the blinking state of the red signal light source; and An analysis module comprising: an analysis module that receives and analyzes a green traffic light photometric signal from the first light measurement sensor and receives and analyzes a red traffic light photometric signal from the second light measurement sensor; Traffic light signal analysis controller.

2. In paragraph 1, A control module including: a control module that receives a signal light blinking analysis signal from the above analysis module and transmits a device control signal; Traffic light signal analysis controller.

3. In paragraph 1, The above analysis module, A method characterized in that, when it is determined by analyzing the green traffic light optical measurement signal or the red traffic light optical measurement signal that one or more pedestrian traffic lights do not blink for a predetermined period of time, a traffic light failure signal is generated. Traffic light signal analysis controller.

4. In paragraph 3, A wireless communication module that receives the traffic light failure signal from the analysis module and transmits traffic light failure information to the management server; Traffic light signal analysis controller.

5. In paragraph 1, The above first optical measurement sensor, A first color sensor installed on the front cover of the green traffic light and photographing the green traffic light light source; Traffic light signal analysis controller.

6. In paragraph 1, The above second optical measurement sensor, A second color sensor installed on the front cover of the red traffic light and photographing the red traffic light light source; Traffic light signal analysis controller.

7. In paragraph 1, The above first optical measurement sensor, A first illuminance sensor for measuring the illuminance of the green traffic light source; The above second optical measurement sensor, A second illuminance sensor for measuring the illuminance of the red traffic light source; Traffic light signal analysis controller.

8. In paragraph 7, At least one of the first light sensor and the second light sensor, Characterized in that it is installed on the LED cover of a pedestrian signal light corresponding to the spacing position between a plurality of LED lamps installed on the front of the pedestrian signal light. Traffic light signal analysis controller.

9. In paragraph 7, At least one of the first light sensor and the second light sensor, The light sensor measurement direction is directed toward the pedestrian signal light, and the light sensor cover is characterized by covering the side and back of the light sensor to block external light other than the pedestrian signal light source. Traffic light signal analysis controller.

10. In paragraph 1, A first optical measurement sensor cable, which has one end connected to the traffic light signal analysis controller and the other end connected to the first optical measurement sensor to transmit the green traffic light optical measurement signal of the first optical measurement sensor to the analysis module; At least a portion of the above first optical measurement sensor cable is a green colored sheathed cable, Traffic light signal analysis controller.

11. In paragraph 1, A second optical measurement sensor cable, which has one end connected to the traffic light signal analysis controller and the other end connected to the second optical measurement sensor to transmit the red traffic light optical measurement signal of the second optical measurement sensor to the analysis module; At least a portion of the second optical measurement sensor cable is a red-colored sheathed cable, Traffic light signal analysis controller.

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