Pedestrian crossing assistance system
The pedestrian crossing assistance system uses an electric push rod to drive the barrier gate, combined with infrared and wind sensors, to automatically respond to traffic light signals and environmental changes, solving the problem of pedestrians running red lights and achieving orderly traffic management and equipment safety protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DISHANFANG (ZHEJIANG) INFORMATION TECHNOLOGY CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-03
AI Technical Summary
In existing technologies, pedestrian crossings mainly rely on traffic lights for guidance. However, the frequent occurrence of pedestrians running red lights increases the risk of traffic accidents and causes disorder. Manual intervention is also inefficient.
Design a pedestrian crossing assistance system that uses an electric push rod to drive the barrier gate, combined with infrared sensing, wind sensing and obstacle avoidance devices, to automatically respond to traffic light signals and environmental changes, realize the extension and retraction control of the barrier gate, and prevent running red lights.
It effectively discourages pedestrians from running red lights, ensures traffic order, prevents the barrier gate from injuring or damaging people, and enhances the stability and security of the system in extreme environments.
Smart Images
Figure CN224457494U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of traffic safety technology, and specifically relates to a pedestrian crossing assistance system. Background Technology
[0002] In urban traffic management, pedestrian crossings are crucial facilities for ensuring pedestrian safety. Currently, most pedestrian crossings rely on simple traffic light indicators to guide pedestrians. However, some pedestrians lack traffic safety awareness and choose to run red lights, which not only increases their own risk of traffic accidents but also leads to traffic chaos and affects the normal flow of vehicles. Although traffic wardens manually dissuade pedestrians, limited manpower makes it difficult to achieve comprehensive and continuous effective management, and it is impossible to fundamentally eliminate the phenomenon of pedestrians running red lights. Utility Model Content
[0003] To address the aforementioned problems, this utility model provides a pedestrian crossing assistance system that can effectively discourage pedestrians from running red lights and ensure their safe passage.
[0004] Therefore, the technical solution of this utility model is: a pedestrian crossing assistance system, comprising two opposing housings, with a control component, an electric push rod and a retractable barrier inside the housing; the side of the housing is provided with an exit for the barrier to pass through, and the electric push rod is used to drive the barrier to extend out of the housing or retract into the housing; an infrared sensor switch is provided on the side of the housing, and an obstacle avoidance baffle is provided on the outside of the barrier, with an obstacle avoidance limit switch inside the obstacle avoidance baffle;
[0005] The control component includes a red light control relay, a green light control relay, and an obstacle avoidance control relay. The power supply terminals of the red light control relay and the green light control relay are respectively connected to the red light and the green light in the traffic light signal, and the common terminal is connected to the transformer power supply. The power supply terminal of the obstacle avoidance control relay is connected to an infrared sensor switch and an obstacle avoidance limit switch arranged in parallel.
[0006] The normally open terminal of the green light control relay is reversed to the power supply terminal of the electric push rod, which drives the electric push rod to extend and the barrier gate to retract into the housing.
[0007] The normally open terminal of the red light control relay is connected to two common terminals of the obstacle avoidance control relay, and the normally closed terminals of these two terminals are connected to the power supply terminal of the electric push rod, which drives the electric push rod to retract and the barrier gate to extend out of the housing.
[0008] The other two common terminals of the obstacle avoidance control relay are connected to the transformer power supply, and the other two normally open terminals are reversed to the power supply terminal of the electric push rod, which drives the electric push rod to extend and the barrier gate to retract into the housing.
[0009] Based on the above scheme and as a preferred embodiment: the housing is equipped with a wind control component, which includes a wind deflector and a wind limit switch. Openings are provided on the top of three sides of the housing, and a wind deflector is installed in each opening. All three wind deflectors work in conjunction with the wind limit switch. The control component also includes a high-wind control relay, the power supply terminal of which is connected to the normally open terminal of the wind limit switch. The high-wind control relay is positioned between the positive common terminal of the red light control relay and the positive terminal of the transformer power supply; that is, the common terminal of the high-wind control relay is connected to the transformer power supply, and the normally closed terminal of the high-wind control relay is connected to the positive common terminal of the red light control relay.
[0010] Based on the above scheme and as a preferred embodiment of the above scheme: a light source chamber is provided inside the housing, and an LED bead and a light-sensing control switch are provided inside the light source chamber. The LED bead is connected to the transformer power supply through the normally closed terminal of the wind-powered limit switch. The light-sensing control switch is used to detect the on / off state of the LED bead and is used to connect the backup battery and the normally open terminal of the wind-powered limit switch.
[0011] Based on the above scheme and as a preferred embodiment of the above scheme: the backup battery is connected to the transformer power supply through a charging control chip.
[0012] Based on the above scheme and as a preferred embodiment of the above scheme: the housing is provided with a green light strip, which is connected to the normally open terminal of the green light control relay; the barrier gate is provided with a red light strip, which is connected to the normally open terminal of the red light control relay.
[0013] Based on the above scheme and as a preferred embodiment of the above scheme: the housing is further provided with a buzzer and a buzzer control relay, the buzzer is connected to the normally open terminal of the buzzer control relay, the power supply terminal of the buzzer control relay is connected in parallel with the power supply terminal of the obstacle avoidance control relay; the common terminal of the buzzer control relay is connected to the transformer power supply.
[0014] Based on the above scheme and as a preferred embodiment of the above scheme: the barrier gate is a scissor-type structure, with the inner side of the barrier gate placed inside the housing and the outer side of the barrier gate extending out from the side opening of the housing; the fixed end of the inner side of the barrier gate is rotatably installed inside the housing, and the free end is rotatably installed at the actuating end of the electric push rod; when the distance between the fixed end and the free end of the inner side of the barrier gate is at its maximum, the barrier gate is completely placed inside the housing.
[0015] Based on the above scheme and as a preferred embodiment of the above scheme: a cooling fan is provided inside the housing, and the cooling fan is connected to the transformer power supply.
[0016] Based on the above scheme and as a preferred embodiment of the above scheme: the housing outlet is located on the opposite side of the two housings, and the infrared sensor switch is located on one side of the housing outlet. The two housings are respectively provided with an infrared transmitter and an infrared receiver.
[0017] This utility model has the above-mentioned working states:
[0018] ① When the green light is on, the green light control relay is energized, the normally open terminal closes, the electric push rod is reverse-energized and extends, the barrier gate retracts into the housing, opening the closed pedestrian crossing, and pedestrians waiting for the red light can cross normally.
[0019] ② When the red light is on, the red light control relay is energized and its normally open terminal is closed. At the same time, the obstacle avoidance limit switch, infrared sensor switch, and wind power limit switch are not triggered, and the corresponding obstacle avoidance control relay and wind control relay are not energized. The red light control relay is connected to the electric push rod through the normally closed terminal of the obstacle avoidance control relay, so that the electric push rod is energized. At this time, the electric push rod retracts, thereby pushing the barrier gate out of the housing, closing the pedestrian crossing, effectively dissuading pedestrians from running red lights, and preventing pedestrians from running red lights.
[0020] ③ When the red light is on, the red light control relay is energized, and the normally open terminal closes. If the obstacle avoidance limit switch or infrared sensor switch is triggered at this time, but the wind-powered limit switch is not triggered, the obstacle avoidance control relay closes, and the normally open terminal connects, causing the electric push rod to extend in reverse connection, and the barrier gate retracts into the housing. In other words, if an obstacle is encountered during the extension of the barrier gate, the obstacle avoidance limit switch can be triggered by the infrared switch or by touching the obstacle avoidance baffle, which will cause the electric push rod to extend and retract the barrier gate, thereby preventing the barrier gate from injuring people or being damaged.
[0021] ④ When the red light is on, the red light control relay is energized and its normally open terminal is closed. If the wind is strong at this time and can push the wind deflector, triggering the wind limit switch, the normally closed terminal of the strong wind control relay will open, and the red light control relay will be de-energized. At the same time, the light source in the light source room will be de-energized, the LEDs will go out, the photosensitive switch will be triggered, the backup battery will start, the electric push rod will be energized in reverse and extend, and the barrier gate will retract into the housing, thus realizing the barrier gate retraction function in strong winds.
[0022] ⑤ When the traffic light circuit loses power, the light source in the light source room is de-energized, the lamp beads go out, the photosensitive switch is triggered, the backup battery starts, the electric push rod is reversed and extended, and the barrier gate retracts into the housing, thus realizing the barrier gate retraction function when power is off.
[0023] Compared with the prior art, the beneficial effects of this utility model are:
[0024] It can automatically track traffic light changes. When the red light is on, the electric pusher drives the barrier to extend and close the pedestrian crossing, physically blocking pedestrians from running red lights. This effectively discourages pedestrians from crossing against the light, constrains pedestrian behavior through practical actions, enhances pedestrians' awareness of obeying traffic rules, reduces the risk of traffic accidents, and ensures smooth traffic flow. When the green light is on, the electric pusher drives the barrier to retract and open the pedestrian crossing, achieving orderly management of pedestrian passage.
[0025] During the extension of the barrier gate, if an obstacle is encountered, the limit switch can be triggered by the infrared sensor switch or by touching the obstacle avoidance baffle to immediately extend the electric push rod and retract the barrier gate, preventing pedestrians from being pinched or equipment from being damaged by collision with obstacles, thus fully ensuring the safety of pedestrians and equipment.
[0026] In the event of a power outage or strong winds, the system can automatically trigger the backup power switch, using the backup power to extend the electric push rod and retract the barrier gate. This ensures the safe passage of pedestrians in special circumstances and avoids potential damage to the equipment caused by strong winds, enhancing the system's safety and stability in complex environments. The backup battery ensures the normal operation of critical system functions (such as barrier gate retraction), guaranteeing pedestrian safety and demonstrating a reasonable power management strategy and thorough preparation for emergencies. Attached Figure Description
[0027] Figure 1 This is a structural diagram of the extended state of the barrier gate of this utility model;
[0028] Figure 2 This is a structural diagram of the barrier gate in its retracted state according to this utility model;
[0029] Figure 3 This is a schematic diagram of the structure of the wind-powered limit switch of this utility model;
[0030] Figure 4 This is a system block diagram of the present invention;
[0031] Figure 5 This is the overall circuit diagram of this utility model;
[0032] Figure 6 This is a schematic diagram of the circuit of this utility model when the green light is on (other circuits are omitted);
[0033] Figure 7 This is a schematic diagram of the circuit of this utility model when the red light is on, there are no obstacles, and it is windy (other circuits are omitted).
[0034] Figure 8 This is a schematic diagram of the circuit of this utility model when the red light is on and an obstacle is encountered (other circuits are omitted).
[0035] Figure 9This is a schematic diagram of the circuit of this utility model in the event of strong winds or power outages (other circuits are omitted).
[0036] The components in the diagram are labeled as follows: housing 1, outlet 11, opening 12, green light strip 13, electric push rod 2, barrier gate 3, slider 31, red light strip 32, mounting plate 4, slide 41, infrared sensor switch 5, folded aluminum strip 6, obstacle avoidance baffle 7, wind deflector 8, first wind deflector 81, second wind deflector 82, third wind deflector 83, wind-powered travel switch SQ1, first obstacle avoidance travel switch SQ2, second obstacle avoidance travel switch SQ3, retraction position sensor SQ4, extension position sensor SQ5. Detailed Implementation
[0037] See the attached diagram. The pedestrian crossing assistance system described in this embodiment includes two opposing housings 1. Each housing 1 houses a control assembly, an electric actuator 2, and a retractable barrier gate 3. Each housing 1 has an exit 11 on its opposite side for the barrier gate 3 to pass through. The barrier gate 3 is a scissor-type structure formed by rotating and mounting profiles. The inner side of the barrier gate 3 is placed inside the housing 1, and the outer side of the barrier gate 3 can extend out from the side opening 11 of the housing 1. The fixed end (upper end) of the inner side of the barrier gate 3 is rotatably mounted inside the housing 1, and the free end (lower end) is rotatably mounted on the actuating end of the electric actuator 2. When the distance between the fixed end and the free end of the inner side of the barrier gate 3 is at its maximum, the barrier gate 3 is completely placed inside the housing 1. A folded anti-aluminum strip 6 is provided above the barrier gate 3 for shielding it.
[0038] An obstacle avoidance assembly is provided on the outside of the barrier gate 3. The obstacle avoidance assembly includes an obstacle avoidance mounting plate 4, a first obstacle avoidance travel switch SQ2, a second obstacle avoidance travel switch SQ3, and an obstacle avoidance baffle 7. The fixed end on the outside of the barrier gate 3 is rotatably connected to the obstacle avoidance mounting plate 4, and the free end on the outside of the barrier gate 3 is rotatably mounted on a slider 31. The mounting plate 4 is provided with a vertically arranged sliding groove 41 (or it can be set as an elongated slot structure, as long as the free end on the outside of the barrier gate can move up and down and rotate). The slider 31 can be slidably mounted on the sliding groove 41 of the mounting plate 4 to facilitate the opening and closing of the barrier gate 3.
[0039] The obstacle avoidance mounting plate 4 has two limit switch mounting holes for mounting the first obstacle avoidance limit switch SQ2 and the second obstacle avoidance limit switch SQ3, allowing the travel rods to pass through the mounting holes. The obstacle avoidance mounting plate 4 also has two pin holes. A pin is located inside the obstacle avoidance baffle 7, and the pin is inserted into the pin hole. A limiting block is provided at the end of the pin to prevent it from falling out of the pin hole. Initially, the obstacle avoidance baffle 7 is in contact with the travel rods of the first obstacle avoidance limit switch SQ2 and the second obstacle avoidance limit switch SQ3. Because the limit switches have internal springs, the travel rods can extend, allowing the obstacle avoidance baffle 7 to be in its furthest position.
[0040] The first obstacle avoidance limit switch SQ2 and the second obstacle avoidance limit switch SQ3 can be commercially available limit switches. When the obstacle avoidance baffle 7 is pushed, the travel rods of the first obstacle avoidance limit switch SQ2 and / or the second obstacle avoidance limit switch SQ3 can be pushed inward. The limit switch contains two sets of contacts, namely normally open and normally closed contacts. When the obstacle avoidance baffle is pushed, the normally open contacts of the obstacle avoidance limit switch are connected.
[0041] When the electric push rod 2 is reverse-connected (i.e., the positive terminal of the electric push rod is connected to the negative terminal of the power supply, and the negative terminal of the electric push rod is connected to the positive terminal of the power supply), the working end of the electric push rod 2 extends, causing the free end inside the barrier gate 3 to move downward, thereby causing the barrier gate 3 to retract into the housing. When the electric push rod 2 is forward-connected (i.e., the positive terminal of the electric push rod is connected to the positive terminal of the power supply, and the negative terminal of the electric push rod is connected to the negative terminal of the power supply), the working end of the electric push rod 2 retracts, causing the free end inside the barrier gate 3 to move upward, thereby causing the barrier gate 3 to extend out of the housing 1. The housing 1 is equipped with a retraction position sensor SQ4 and an extension position sensor SQ5, which can determine whether the barrier gate 3 is fully retracted into the housing 1 or fully extended.
[0042] Infrared sensor switches 5 are provided on both sides of the outlet of the housing 1. The infrared sensor switches 5 include matching infrared transmitters and infrared receivers, which are respectively installed on the two housings 1 to sense whether a person or object is approaching between the two housings. A total of 4 pairs of transmitters and receivers can be provided on the two housings. The transmitters are installed 200mm above and below the left and right sides of the housing, and the receivers are installed 200mm above and below the right and left sides of the housing, respectively. The two work together.
[0043] The housing 1 is equipped with a wind control component, which includes a wind deflector 8 and a wind-powered limit switch SQ1. Openings 12 are provided on the top of three sides of the housing 1 (excluding the side where the barrier gate is located). The wind deflector 8 is placed within the openings 12, and a spring is installed inside the wind deflector 8. When the wind force exceeds the spring force, the wind deflector 8 moves inward, pushing the travel lever of the wind-powered limit switch SQ1, thus activating its normally open contact. The wind-powered limit switch SQ1 can also be a commercially available limit switch.
[0044] The wind-powered limit switch SQ1 has a limit baffle inside, which is connected to the limit rod of the wind-powered limit switch SQ1. The wind deflectors 8 on the three sides have push rods inside, which can abut against the limit baffle. When there is no strong wind, the spring inside the limit rod can extend the limit rod, and the limit baffle can push the first wind deflector 81, the second wind deflector 82, and the third wind deflector 83 outward, so the wind-powered limit switch SQ1 will not be triggered.
[0045] The housing 1 contains a light source chamber housing an LED bead L and a photosensitive control switch K1. The LED bead L is connected to the transformer power supply T via the normally closed contact of the wind-powered limit switch SQ1. The photosensitive control switch K1 detects the on / off state of the LED bead L and connects to the backup battery C and the normally open contact of the wind-powered limit switch SQ1. Simultaneously, it reverses the connection to the electric push rod, causing it to extend and retract the barrier. The backup battery C is connected to the transformer power supply T via a charging control chip U and can be charged using the transformer power supply T.
[0046] The housing 1 is equipped with a cooling fan M, which is connected to a transformer power supply T. A vent 13 is located on the top of the housing 1, which can cooperate with the cooling fan M to dissipate heat from the interior. At the same time, in order to prevent moisture from entering the housing, a semi-enclosed protective cover 14 can be installed on the outside of the vent 13.
[0047] The control components include a red light control relay KA1, a green light control relay KA2, an obstacle avoidance control relay KA3, a buzzer control relay KA4, and a strong wind control relay KA5. The red light control relay KA1, green light control relay KA2, obstacle avoidance control relay KA3, and buzzer control relay KA4 are conventional 14-pin relays, where pins 1, 2, 3, and 4 are normally closed terminals, pins 5, 6, 7, and 8 are normally open terminals, pins 9, 10, 11, and 12 are common terminals, and pins 13 and 14 are power supply terminals. The strong wind control relay KA5 is a conventional 8-pin relay, where pins 1 and 2 are normally closed terminals, pins 3 and 4 are normally open terminals, pins 5 and 6 are common terminals, and pins 7 and 8 are power supply terminals.
[0048] The power supply terminals 13 and 14 of the green light control relay KA2 are connected to the negative and positive terminals of the green light in the traffic light signal, respectively. The common terminals 9 and 10 are connected to the negative terminal of the transformer power supply T, and the common terminals 11 and 12 are connected to the positive terminal (-) of the transformer power supply T. The normally open terminal 6 (-) is connected to the positive terminal (+) of the electric push rod, and the normally open terminal 8 (+) is connected to the negative terminal of the electric push rod, i.e., the electric push rod is reversed. The housing 1 is also provided with a green light strip 13. The normally open terminal 5 (-) is connected to the negative terminal of the green light strip, and the normally open terminal 7 (+) is connected to the positive terminal of the green light strip.
[0049] When the green light is on, pins 13 and 14 of the green light control relay KA2 are energized, while pins 5, 6, 7, and 8 (normally open terminals) are closed. Pins 6 and 8 reverse the power supply to the electric push rod, causing its actuating end to extend and retract the barrier gate into its housing, opening the pedestrian crossing and allowing pedestrians waiting for the red light to cross normally. Simultaneously, pins 5 and 7 illuminate the green light strip, providing a visual reminder to pedestrians in the waiting area.
[0050] The power supply terminals 13 and 14 of the red light control relay KA1 are connected to the negative and positive terminals of the red light in the traffic light signal, respectively. The common terminals 9 and 10 are connected to the negative terminal of the transformer power supply T. The common terminals 11 and 12 are connected to the normally closed terminal 1 of the wind control relay KA5. The corresponding common terminal 5 is connected to the positive terminal of the transformer power supply T. That is, when the wind control relay KA5 is not triggered, the common terminals 11 and 12 are connected to the positive terminal of the transformer power supply T.
[0051] Meanwhile, pin 8 (+) of the power supply terminal of the strong wind control relay KA5 is connected to the normally open contact of the wind power limit switch SQ1. When the wind deflector pushes the limit rod of the wind power limit switch SQ1, the normally open contact of the wind power limit switch SQ1 is turned on, and pins 5 and 1 of the strong wind control relay KA5 are disconnected, so that the circuit containing pins 11 and 12 of the red light control relay KA1 can no longer be turned on.
[0052] The barrier gate 3 is equipped with a red light strip 32. The normally open pins 6 and 8 are connected to the negative and positive terminals of the red light strip, respectively, so that the red light strip can be lit up.
[0053] The normally open terminal 5 (-) of the red light control relay KA1 is connected to the common terminal 10 of the obstacle avoidance control relay KA3. The normally closed terminal 2 (-) of the corresponding circuit of KA10 is connected to the negative power supply (-) of the electric push rod. The normally open terminal 7 (+) of KA1 is connected to the common terminal 12 of the obstacle avoidance control relay KA3. The normally closed terminal 4 (+) of the corresponding circuit of KA12 is connected to the positive power supply (+) of the electric push rod, i.e., the electric push rod is positively connected.
[0054] The obstacle avoidance control relay KA3 has its power supply pin 13 connected to the negative terminal (ground) of the transformer power supply T, and its pin 14 connected in parallel to the normally open contacts of the infrared sensor switch and two obstacle avoidance limit switches. Whenever the infrared sensor switch or any one of the obstacle avoidance limit switches is triggered, the obstacle avoidance control relay KA3 will be energized and triggered. The common terminals 9 and 11 of the obstacle avoidance control relay KA3 are connected to the negative and positive terminals of the transformer power supply T, respectively. The normally open terminal 5 (-) corresponding to pin 9 is connected to the positive (+) terminal of the electric push rod's power supply, and the normally open terminal 7 (+) corresponding to pin 11 is connected to the negative (-) terminal of the electric push rod's power supply, meaning the electric push rod is reversed.
[0055] The power supply terminals 13 and 14 of the buzzer control relay KA4 are connected in parallel with the terminals 13 and 14 of the obstacle avoidance control relay KA3. This means that when the obstacle avoidance control relay KA3 is triggered, the buzzer control relay KA4 is triggered synchronously. Pin 9 of the buzzer control relay KA4 is connected to the negative terminal of the transformer power supply T, and pin 12 is connected to the positive terminal of the transformer power supply T. A buzzer HA is connected in series between the normally open terminals 5 and 8. When the buzzer HA triggers the control relay KA4, the circuit containing the buzzer HA is connected, and the buzzer HA emits an alarm sound.
[0056] The lamp L in the light source chamber is connected to the transformer power supply T through the normally closed contact of the wind-powered limit switch SQ1. When there is a strong wind or a power outage, the normally closed contact of the wind-powered limit switch SQ1 opens or loses power, and the lamp L will turn off. The light-sensing control switch K can detect the lamp L's off status, thereby connecting the backup battery C and the normally open contact of the wind-powered limit switch SQ1. In the case of a strong wind, it sends a trigger signal to the strong wind control relay KA5. At the same time, the backup battery C is reverse-connected to the electric push rod, which can retract the barrier gate in the case of a power outage or strong wind.
[0057] When the red light is on, the following situations may occur:
[0058] In the absence of strong winds, power outages, or obstacles: pins 13 and 14 of the red light control relay KA1 are normally open and closed. At the same time, the obstacle avoidance limit switch, infrared sensor switch, and wind force limit switch SQ1 are not triggered. Consequently, the corresponding obstacle avoidance control relay KA3 and strong wind control relay KA5 are not energized. Pins 5 and 7 of the red light control relay KA1 are connected to the electric push rod through pins 2 and 4 of the normally closed terminal of the obstacle avoidance control relay KA3, making the electric push rod positively energized. At this time, the electric push rod retracts, thereby pushing the barrier gate out of the housing, closing the pedestrian crossing, and effectively dissuading pedestrians from running red lights.
[0059] In the absence of strong winds or power outages, but with obstacles present: Pins 13 and 14 of the red light control relay KA1, normally open terminals, close. Simultaneously, the obstacle avoidance limit switch or infrared sensor switch is triggered, but the wind-powered limit switch SQ1 is not triggered. At this time, the obstacle avoidance control relay KA3 closes, and its normally open terminals 5 and 7 are reverse-connected to the electric push rod, causing it to extend and retract the barrier gate into its housing. In other words, if an obstacle is encountered during the barrier gate's extension, triggering the obstacle avoidance limit switch via the infrared switch or by touching the obstacle avoidance baffle will extend the electric push rod and retract the barrier gate, thus preventing injury or damage.
[0060] In case of strong winds: When the wind is strong enough to push the wind deflector and trigger the wind limit switch SQ1, the normally closed terminal of the strong wind control relay KA5 will open, and the red light control relay KA1 will be de-energized. At the same time, the light source in the light source room will be de-energized, the lamp L will turn off, the photosensitive switch will be triggered, the backup battery C will start, the electric push rod will be reverse-energized and extended, and the barrier gate will retract into the housing, thus realizing the barrier gate retraction function in case of strong winds.
[0061] In case of power failure: When the traffic light circuit loses power, the transformer power supply T also loses power, the light source in the light source room loses power, the lamp L goes out, the photosensitive switch is triggered, which starts the backup battery C, the electric push rod is reversed and extended, and the barrier gate retracts into the housing, thus realizing the barrier gate retraction function in the event of a power outage.
[0062] Meanwhile, during obstacle avoidance, the barrier gate stops extending and retracting when it encounters an obstacle. Once the obstacle disappears, the barrier gate stops retracting and immediately resumes extending. The barrier gate will only retract into its housing during traffic light outages or strong winds.
Claims
1. A pedestrian crossing assist system, characterized in that: It includes two opposing housings, each housing containing a control assembly, an electric push rod, and a retractable barrier gate; the side of each housing has an exit for the barrier gate to pass through, and the electric push rod is used to drive the barrier gate to extend out of the housing or retract into the housing; the side of each housing has an infrared sensor switch, and the outside of the barrier gate has an obstacle avoidance baffle, inside which is an obstacle avoidance limit switch. The control component includes a red light control relay, a green light control relay, and an obstacle avoidance control relay. The power supply terminals of the red light control relay and the green light control relay are respectively connected to the red light and the green light in the traffic light signal, and the common terminal is connected to the transformer power supply. The power supply terminal of the obstacle avoidance control relay is connected to an infrared sensor switch and an obstacle avoidance limit switch arranged in parallel. The normally open terminal of the green light control relay is reversed to the power supply terminal of the electric push rod, which drives the electric push rod to extend and the barrier gate to retract into the housing. The normally open terminal of the red light control relay is connected to two common terminals of the obstacle avoidance control relay, and the normally closed terminals of these two terminals are connected to the power supply terminal of the electric push rod, which drives the electric push rod to retract and the barrier gate to extend out of the housing. The other two common terminals of the obstacle avoidance control relay are connected to the transformer power supply, and the other two normally open terminals are reversed to the power supply terminal of the electric push rod, which drives the electric push rod to extend and the barrier gate to retract into the housing.
2. A crosswalk assistance system as defined in claim 1, wherein: The housing is equipped with a wind control component, which includes a wind deflector and a wind limit switch. Openings are located on the top of three sides of the housing, and a wind deflector is installed in each opening. All three wind deflectors work in conjunction with the wind limit switch. The control component also includes a high-wind control relay, the power supply terminal of which is connected to the normally open terminal of the wind limit switch. The high-wind control relay is positioned between the positive common terminal of the red light control relay and the positive terminal of the transformer power supply; that is, the common terminal of the high-wind control relay is connected to the transformer power supply, and the normally closed terminal of the high-wind control relay is connected to the positive common terminal of the red light control relay.
3. A crosswalk assistance system as defined in claim 2, wherein: The housing contains a light source chamber, which houses an LED and a photosensitive control switch. The LED is connected to a transformer power supply via the normally closed terminal of a wind-powered limit switch. The photosensitive control switch is used to detect whether the LED is on or off, and it is also used to connect a backup battery and the normally open terminal of the wind-powered limit switch.
4. The pedestrian crossing assist system as described in claim 3, characterized in that: The backup battery is connected to the transformer power supply via a charging control chip.
5. The crosswalk assistance system of claim 1, wherein: The housing is equipped with a green light strip, which is connected to the normally open terminal of the green light control relay; the barrier gate is equipped with a red light strip, which is connected to the normally open terminal of the red light control relay.
6. A crosswalk assistance system as defined in claim 1, wherein: The housing also includes a buzzer and a buzzer control relay. The buzzer is connected to the normally open terminal of the buzzer control relay. The power supply terminal of the buzzer control relay is connected in parallel with the power supply terminal of the obstacle avoidance control relay. The common terminal of the buzzer control relay is connected to the transformer power supply.
7. A crosswalk assistance system as defined in claim 1, wherein: The barrier gate has a scissor-type structure, with the inner side of the barrier gate placed inside the housing and the outer side of the barrier gate extending out from the side opening of the housing; the fixed end of the inner side of the barrier gate is rotatably installed inside the housing, and the free end is rotatably installed at the actuating end of the electric push rod; when the distance between the fixed end and the free end of the inner side of the barrier gate is at its maximum, the barrier gate is completely placed inside the housing.
8. The crosswalk assistance system of claim 1, wherein: The housing is equipped with a cooling fan, which is connected to the transformer power supply.
9. The crosswalk assistance system of claim 1, wherein: The shell outlet is arranged on opposite sides of the two shells, and the infrared induction switch is arranged on one side of the shell outlet, and the infrared transmitting end and the infrared receiving end are correspondingly arranged on the two shells.