Door guardrail unlocking control system and intelligent door guardrail

Abstract

A door guardrail unlocking control system and an intelligent door guardrail. In the system, a passive pyroelectric infrared detector is mounted at a preset height position, and the passive pyroelectric infrared detector is used for outputting a first sensing signal when a human body moves within a first preset range around a door guardrail; an active detection sensor is mounted at a preset height position, the active detection sensor is used for outputting a second sensing signal when there is an object or human body having a height greater than or equal to the preset height position within a second preset range around the door guardrail; and a control circuit is connected to both the active detection sensor and the passive pyroelectric infrared detector, and the control circuit is used for controlling the unlocking of a locking apparatus of the door guardrail when the first sensing signal and the second sensing signal are received.

Description

Door and fence unlocking control system and smart door and fence Technical Field

[0001] This application relates to the field of door and fence unlocking control technology, and in particular to a door and fence unlocking control system and an intelligent door and fence. Background Technology

[0002] Currently, there are some smart unlocking door railing products on the market to improve the convenience for adults to pass through. However, the applicant found that traditional door railing products may accidentally trigger the automatic unlocking function, posing a safety hazard to children and pets.

[0003] Summary of the Invention

[0004] According to various embodiments disclosed in this application, a guardrail unlocking control system and an intelligent gate guardrail are provided.

[0005] A gate / fence unlocking control system includes:

[0006] A passive pyroelectric infrared detector is installed at a preset height position. The passive pyroelectric infrared detector is used to output a first sensing signal when there is human movement within a first preset range around the door guardrail.

[0007] An active detection sensor is installed at a preset height position. The active detection sensor is used to output a second sensing signal when there is an object or human body with a height greater than or equal to the preset height position within a second preset range around the door guardrail.

[0008] The control circuit is connected to both the active detection sensor and the passive pyroelectric infrared detector. The control circuit is used to unlock the locking device of the gate guardrail upon receiving the first and second sensing signals.

[0009] A smart gate railing includes:

[0010] Guardrail frame, with entrance and exit points;

[0011] The guardrail body has one side that is rotatably connected to the guardrail frame. The guardrail body is used to open or close the entrance / exit.

[0012] A locking device is provided on the guardrail body and / or guardrail frame, and the locking device is used to lock or unlock the guardrail body and the guardrail frame.

[0013] The aforementioned gate and railing unlocking control system.

[0014] Details of one or more embodiments of this application are set forth in the following drawings and description. Other features and advantages of this application will become apparent from the specification, drawings, and claims. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a schematic diagram of one of the door fence unlocking control system and smart door fence according to one or more embodiments;

[0017] Figure 2 is a schematic diagram of the circuit structure of the gate fence unlocking control system according to one or more embodiments;

[0018] Figure 3 is a schematic diagram of the passive pyroelectric infrared detector and the active detection sensor according to one or more embodiments;

[0019] Figure 4 is a second schematic diagram of the circuit structure of the gate fence unlocking control system according to one or more embodiments;

[0020] Figure 5 is a schematic diagram of the circuit structure of the gate fence unlocking control system according to one or more embodiments;

[0021] Figure 6 is a fourth schematic diagram of the circuit structure of the gate fence unlocking control system according to one or more embodiments;

[0022] Figure 7 is a fifth schematic diagram of the circuit structure of the gate fence unlocking control system according to one or more embodiments;

[0023] Figure 8 is a second schematic diagram of a door barrier unlocking control system and a smart door barrier according to one or more embodiments. Detailed Implementation

[0024] To make the technical solutions and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0026] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another.

[0027] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as “below,” “under,” or “below” will be oriented “above” the other element or feature. Therefore, the exemplary terms “below” and “under” can include both above and below orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0028] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. Furthermore, in the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if there is transmission of electrical signals or data between the connected objects.

[0029] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0030] The door fence unlocking control system 14 provided in this application embodiment can be applied to smart door fences. As shown in FIG1, the smart door fence 1 may include: a fence frame 11, a fence body 12, and a locking device 13; wherein, the fence frame 11 is provided with an entrance and exit, and one side of the fence body 12 is rotatably connected to the fence frame 11, and the fence body 12 is used to open or close the entrance and exit; the locking device 13 is provided on the fence body 12 and / or the fence frame 11, and the locking device 13 is used to lock or unlock the fence body 12 and the fence frame 11.

[0031] This application provides a door fence unlocking control system, which is applied to a door fence, as shown in Figures 2-4. The door fence unlocking control system includes: a passive pyroelectric infrared detector 141, an active detection sensor 142, and a control circuit 143.

[0032] The passive pyroelectric infrared detector is installed at a preset height position and is used to output a first sensing signal when there is human movement within a first preset range around the door railing.

[0033] The preset height can be determined based on a height that distinguishes adults from children and pets, and is generally set to around 1.4m. Of course, depending on the average height of people of different ages and regions, the preset height can be set to other values ​​besides 1.4m. The preset height can also be a range; for example, the set height of a passive pyroelectric infrared detector and the set height of an active detection sensor can differ within this range. A passive pyroelectric infrared detector is a non-contact sensor that can sense infrared radiation around a door or railing. A first preset range can be set for the passive pyroelectric infrared detector, covering both sides of the door or railing and distinct from the user's activity range during daily indoor activities. The first preset range can also be set based on prior data collection, acquiring the user's first activity trajectory each time the door is opened, and a second activity trajectory near the door or railing when the door is not needed. The first preset range is determined based on these two activity trajectories, and should be within the range of the first activity trajectory but not within the range of the second activity trajectory.

[0034] An active detection sensor is installed at a preset height position. The active detection sensor is used to output a second sensing signal when there is an object or human body with a height greater than or equal to the preset height position within a second preset range around the door guardrail.

[0035] An active detection sensor is a sensor with signal transmission and reception functions. Examples include infrared sensors and ultrasonic sensors, which will not be exhaustively listed here. The active detection sensor outputs different sensing signals depending on whether the transmitted signal can be received normally. These different sensing signals indicate whether an object or human body has entered the detection range. For example, optionally, when the active detection sensor is an infrared sensor, its emitted infrared signal can be received normally when there is no obstruction, outputting a high level (or low level). When an object or human body obstructs the infrared signal, the signal received on the receiving side is interrupted, and a low level (or high level) is output. The signal output by the active detection sensor when an object or human body with a height greater than or equal to a preset height is present within the second preset range is used as the second sensing signal and transmitted to the control circuit, providing a basis for the unlocking control of the control circuit.

[0036] The control circuit is connected to both an active detection sensor and a passive pyroelectric infrared detector. Upon receiving a first sensor signal and a second sensor signal, the control circuit unlocks the door's locking mechanism. Receiving the first sensor signal indicates that a person of a height greater than or equal to a preset height has entered and is moving within the first preset range. Receiving the second sensor signal indicates that a person of a height greater than or equal to a preset height has entered the second preset range. If this is determined to be an adult requiring door opening, the control circuit unlocks the door's locking mechanism. This combination of passive and active detection eliminates the possibility of children holding objects near the door, improving the accuracy and reliability of the automatic unlocking control and thus enhancing the protective effect of the door.

[0037] In one embodiment, the control circuit can be connected to the active detection sensor and the passive pyroelectric infrared detector via a wired or wireless connection. In an optional embodiment, the control circuit is connected to the active detection sensor and the passive pyroelectric infrared detector respectively via wires.

[0038] In one embodiment, the control circuit is also used to control the locking device to lock if the door guardrail is in a closed state for a preset time period after the output unlock control signal.

[0039] The control circuit outputs an unlocking control signal upon receiving the first and second sensor signals. This unlocking control signal instructs the door fence's locking device to unlock. The preset duration can be a timeframe determined based on the time required for an adult to move from the second preset range to the door fence. This preset duration can be slightly longer than the time required for an adult to move from the second preset range to the door fence. If the door fence remains closed within the preset duration, it indicates that the user has only approached the area but has no intention of entering or exiting. To prevent children and pets from running out due to the locking device remaining unlocked for an extended period, the control circuit locks the locking device, securing the fence frame and body to prevent children and pets from escaping and further improving the safety and reliability of the door fence product.

[0040] Optionally, in one implementation, the preset duration can be set to 3 seconds. Of course, depending on the time required for the user to move to the gate after entering the second preset range, it can also be set to other durations such as 2 seconds or 4 seconds.

[0041] In one embodiment, as shown in Figure 4, the gate barrier unlocking control system further includes an alarm module.

[0042] The alarm module may include, but is not limited to, indicator lights, buzzers, and communication modules. Different alarm modules perform different alarm actions. For example, the alarm actions corresponding to indicator lights include, but are not limited to, turning on a red light or flashing. The alarm actions corresponding to buzzers include, but are not limited to, emitting a prompt sound. The alarm actions corresponding to communication modules include, but are not limited to, sending alarm information to terminals such as mobile phones. The alarm information is generated by the control circuit. Here, the control circuit should be understood in a broad sense as a circuit, which may include discrete components or integrated chips, etc., without being limited here.

[0043] The control circuit is connected to the alarm module, and the control circuit is also used to control the alarm module to sound an alarm when the door guardrail is open for a duration longer than a preset time.

[0044] The control circuit controls the alarm implementation process differently depending on the type of alarm module. For example, for indicator lights, the control circuit can turn the indicator light on and off by controlling the power supply to it; when the indicator light is on, it is an alarm. The control circuit can also change the modulation signal applied to the indicator light to make it flash, thus triggering an alarm.

[0045] The preset time is a duration determined based on the time required for a user to pass through the open gate after passing through the gate.

[0046] Specifically, in the door fence unlocking control system provided in this application embodiment, if the door fence remains open for a duration longer than a preset time, the control circuit considers there to be a risk that the user has forgotten to close the door fence. At this time, the control circuit controls the alarm module to sound an alarm to remind the user to close the door fence in time to prevent children and pets from running out. This improves the protective effect of the door fence product while realizing intelligent unlocking of the door fence.

[0047] In one embodiment, the preset time can be configured to be 3 seconds.

[0048] In one embodiment, the control circuit is also used to control the alarm module to continuously issue an alarm until the door guardrail is closed or the alarm duration reaches the preset alarm duration.

[0049] The door barrier unlocking control system provided in this application embodiment has a control circuit that continuously triggers an alarm module when the door barrier remains open for a duration exceeding a preset time, preventing users from forgetting to close the door due to not hearing the warning. The preset alarm duration exceeds the preset time.

[0050] If the door barrier is closed during continuous alarm operation controlled by the control circuit, the alarm module will stop alarming. If the door barrier remains open when the actual alarm duration reaches the preset duration, it indicates that the user needs to keep the door barrier open for an extended period due to waiting for someone, moving items, or other reasons. In this case, the control circuit will stop alarming. This serves to remind the user to close the door barrier promptly and avoids a degraded user experience caused by prolonged alarms when the door barrier needs to be left open for an extended period.

[0051] The control circuit can stop the alarm module from activating by stopping the transmission of drive signals, cutting off power, or halting communication, depending on the specific alarm module selected. For example, for an indicator light, disconnecting the power supply or stopping the output of drive signals to the indicator light will turn it off, thus stopping the alarm. For a buzzer, stopping the power supply will stop the buzzer from sounding, thus stopping the alarm. For a communication module, stopping the transmission of alarm information to the communication module or cutting off the power supply will stop the communication module from sending alarm information to terminals such as mobile phones, thus stopping the alarm.

[0052] In one embodiment, as shown in FIG5, the gate fence unlocking control system further includes a gate fence status detection device 145.

[0053] The gate railing status detection device 145 is connected to the control circuit 143. The gate railing status detection device 145 is used to detect the opening and closing of the gate railing and outputs a detection signal to the control circuit 143 to characterize whether the gate railing is open or closed.

[0054] The selection of the gate and fence status detection device 145 can be determined based on factors such as cost and installation space. For example, the gate and fence status detection device 145 can be, but is not limited to, a Hall sensor, a photoelectric sensor, etc.

[0055] In one embodiment, the gate fence status detection device may include a Hall sensor. When the gate fence is opened, the magnetic field changes compared to when the gate fence is closed. The Hall sensor can sense this change in magnetic field and output an electrical signal accordingly. This electrical signal can characterize the open and closed state of the gate fence. The Hall sensor is connected to a control circuit and sends the electrical signal to the control circuit. The control circuit can then determine whether the gate fence is currently in an open or closed state, and then, in conjunction with the scheme described in the above embodiment, perform alarm control, etc.

[0056] In one embodiment, the gate fence status detection device may include a photoelectric sensor. The transmitter and receiver of the photoelectric sensor are respectively disposed on the fence frame and the fence body. When the gate fence is closed, the light emitted by the transmitter is received by the receiver. When the gate is open, the receiver cannot receive the light projected by the transmitter, and the output signal changes. Based on the difference in the output signal of the receiver in the two states of the gate fence being closed and open, the control circuit can determine the current opening and closing state of the gate fence, and then execute the control process in the above embodiment.

[0057] In one embodiment, as shown in FIG3, the first preset range covers the second preset range, and the active detection sensor 142 includes: a first transmitter 1421 and a first receiver 1422.

[0058] The first transmitter 1421 is installed at a preset height position to provide a transmission signal within a second preset range around the gate railing. The first receiver 1422 is correspondingly arranged with the first transmitter 1421. The first receiver 1422 is used to receive the transmission signal and output a second sensing signal when no transmission signal is received.

[0059] The control circuit 143 is used to control the first transmitter 1421 to provide a transmission signal when the first sensing signal is received.

[0060] In one embodiment, as shown in FIG6, the control circuit 143 includes a first controller 1431 and a second controller 1432.

[0061] The first controller 1431 is connected to the passive pyroelectric infrared detector 141 and the active detection sensor 142 respectively. The first controller 1431 is used to output a trigger signal when it receives the first sensing signal and the second sensing signal. The second controller 1432 is used to control the locking device 13 to unlock when it receives the trigger signal.

[0062] The first controller can be a microcontroller, a single-chip microcomputer, etc., and the second controller can also be a single-chip microcomputer, a microcontroller, etc., depending on cost and product size requirements.

[0063] Specifically, the first controller can be configured with multiple data ports that are connected to the output terminals of the passive pyroelectric infrared detector and the active detection sensor. When the first controller receives the first sensor signal and the second sensor signal, it indicates that an adult has moved to the vicinity of the door railing and may have a need to open the door. The first controller outputs a trigger signal to the second controller, which is used to control the unlocking and locking of the locking device. When the second controller receives the trigger signal, based on the door opening need represented by the signal, the second controller controls the locking device to unlock.

[0064] In one embodiment, as shown in FIG6, the alarm module 144 includes a first alarm indicator light 1441, and a first controller 1431 is connected to the first alarm indicator light 1441. When the first controller 1431 receives a first sensing signal and a second sensing signal, it controls the first alarm indicator light 1441 to light up. The first alarm indicator light 1441 can be a red light.

[0065] In one embodiment, as shown in FIG6, the alarm module 144 includes a second alarm indicator light 1442 and a buzzer 1443. The second controller 1432 is connected to the second alarm indicator light 1442 and the buzzer 1443 respectively. When the second controller 1432 receives a trigger signal, it controls the second alarm indicator light 1442 and the buzzer 1443 to work, the second alarm indicator light 1442 lights up, and the buzzer 1443 sounds an alarm.

[0066] In one embodiment, the trigger signal is a photoelectric signal.

[0067] In one embodiment, as shown in Figures 3 and 7, the gate barrier unlocking control system 14 further includes a second transmitter 16 and a second receiver 17. A first controller 1431 is connected to a passive pyroelectric infrared detector 141, an active detection sensor 142, and the second transmitter 16. When the first controller 1431 receives the first and second sensing signals, it controls the second transmitter 16 to emit a light signal. The second receiver 17 is correspondingly configured with the second transmitter 16, and when the second receiver 17 receives the light signal, it converts the light signal into an electrical signal and transmits it to the second controller 1432. Upon receiving the electrical signal, the second controller 1432 controls the locking device 13 to unlock.

[0068] In one embodiment, as shown in FIG8, the gate barrier unlocking control system 14 further includes a power supply battery 146. The power supply battery 146 is used to provide operating voltage for the connected passive pyroelectric infrared detector 141, active detection sensor 142 and control circuit 143; the control circuit 143 is used to detect the remaining power of the power supply battery 146, and control the alarm module 144 to issue an alarm when the remaining power is lower than a preset power threshold.

[0069] When the remaining power of the power supply battery is lower than a preset power threshold, the control circuit controls the alarm module to issue an alarm in a manner that may include any one or more of the alarm module alarm methods described in the above embodiments.

[0070] In one embodiment, the power supply battery may include a first battery and a second battery. The first battery is connected to a passive pyroelectric infrared detector, an active detection sensor, a first controller, a second transmitter, and a first alarm indicator, respectively. The second battery is connected to a second controller, a second alarm indicator, a buzzer, and a second receiver, respectively.

[0071] The first controller detects the remaining power of the first battery and, when the remaining power of the first battery is lower than a preset power threshold, controls the first alarm indicator light to activate, for example, by flashing for 5 seconds. The second controller detects the remaining power of the second battery and, when the remaining power of the second battery is lower than a preset power threshold, controls a buzzer to sound an alarm, for example, by emitting a "beep beep beep beep~" sound for 5 seconds.

[0072] In one embodiment, the first battery, passive pyroelectric infrared detector, active detection sensor, first controller, second transmitter, and first alarm indicator can be integrated into one housing. The second battery, second controller, second alarm indicator, buzzer, and second receiver can be integrated into another housing. Of course, the arrangement of these components can be determined based on the structural characteristics of the door / fence.

[0073] In one embodiment, the active detection sensor is an infrared sensor. Correspondingly, the first transmitter is an infrared transmitter, and the first receiver is an infrared receiver.

[0074] In one embodiment, the active detection sensor is an ultrasonic sensor. Correspondingly, the first transmitter is an ultrasonic transmitter, and the first receiver is an ultrasonic receiver.

[0075] In one embodiment, the passive pyroelectric infrared detector includes a pyroelectric sensor and a Fresnel lens. The Fresnel lens is fitted onto the pyroelectric sensor to receive infrared radiation emitted by the human body within a first preset range.

[0076] The human body has a constant body temperature, generally around 37 degrees Celsius, so it emits infrared rays with a specific wavelength of about 10 μm. Passive pyroelectric infrared detectors work by detecting the infrared rays of about 10 μm emitted by the human body.

[0077] The infrared radiation emitted by the human body, around 10µm, is amplified by a Fresnel lens and focused onto a pyroelectric sensor (infrared sensing source). When the temperature of the pyroelectric sensor changes upon receiving infrared radiation from the human body, it loses its charge balance, releases charge, and generates the first sensing signal.

[0078] In one embodiment, an intelligent gate fence is provided, as shown in Figure 1, including: a fence frame, a fence body, a locking device, and the aforementioned gate fence unlocking control system.

[0079] The guardrail frame has an entrance / exit. One side of the guardrail body is rotatably connected to the guardrail frame, and the guardrail body is used to open or close the entrance / exit. A locking device is provided on the guardrail body and / or the guardrail frame, and the locking device is used to lock or unlock the guardrail body to the guardrail frame.

[0080] The explanation of the door fence unlocking control system can be found in the description of the above embodiments, and will not be repeated here. The smart door fence equipped with the above-mentioned door fence unlocking control system can prevent accidental locking caused by children and pets accidentally entering the vicinity of the fence, thus improving the reliability of the door fence's protection.

[0081] In one embodiment, as shown in FIG8, the locking device 13 may include a door lock driver (not shown), a transmission device 131, a lock tongue 132, and a limiting groove (not shown) that engages with the locking mechanism; wherein the lock tongue 132 and the limiting groove are respectively disposed on the guardrail frame 11 and the guardrail body 12. The door lock driver is connected to the control circuit 143.

[0082] In one embodiment, as shown in FIG8, the transmission device 131 includes an unlocking rack 1311, an unlocking lever 1312, and a gear 1313. The door lock driver drives the gear 1313 to rotate, and the gear 1313 drives the unlocking rack 1311 to move, thereby pushing the unlocking lever 1312, which in turn drives the lock tongue 132 to extend and retract, thereby achieving unlocking and locking.

[0083] In one embodiment, as shown in FIG8, gear 1313 is housed in a gearbox.

[0084] In one embodiment, the locking device may further include a housing, with the door lock driver, transmission device, and lock tongue all disposed on the guardrail frame and within the housing. The lock tongue is retractable and can pass through a through hole in the housing to lock with a limiting groove in the guardrail body.

[0085] In one embodiment, as shown in Figure 8, there can be multiple sets of locking tongue 132 and limiting grooves. These can be set at different heights on the door railing. Based on the redundancy design, the door railing can be prevented from opening abnormally due to the failure of one locking tongue 132, thereby improving the protective reliability of the door railing product.

[0086] In one embodiment, as shown in FIG8, a door frame pre-tightening screw 18 is also provided on the outside of the guardrail frame 11 so that the guardrail frame 11 can be stably connected to the door frame, and the pre-tightening screw 18 is adjustable to be applicable to doors of different widths, thereby improving versatility.

[0087] In one embodiment, as shown in FIG8, the guardrail body 12 is also provided with an upper rotating shaft 19 and a lower rotating shaft 20, so that the guardrail body 12 and the guardrail frame 11 are rotatably connected.

[0088] In one embodiment, the guardrail body 12 includes a plurality of spaced-apart bars, and the gaps between the bars ensure ventilation.

[0089] It should be noted that during installation, passive pyroelectric infrared detectors should be kept away from places sensitive to air temperature changes, such as air conditioners, refrigerators, and stoves, to avoid false triggering. Furthermore, passive pyroelectric infrared detectors should not be pointed directly at windows, otherwise, disturbances from hot air currents outside the window and movement of people may cause false alarms.

[0090] In the description of this specification, references to terms such as "some embodiments," "other embodiments," and "ideal embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0091] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A gate / fence unlocking control system, comprising: A passive pyroelectric infrared detector is installed at a preset height position. The passive pyroelectric infrared detector is used to output a first sensing signal when there is human movement within a first preset range around the door railing. An active detection sensor is installed at the preset height position. The active detection sensor is used to output a second sensing signal when there is an object or human body with a height greater than or equal to the preset height position within a second preset range around the door guardrail. as well as A control circuit is connected to the active detection sensor and the passive pyroelectric infrared detector, respectively. The control circuit is used to control the locking device of the door guardrail to unlock when it receives the first sensing signal and the second sensing signal.

2. The system according to claim 1, wherein the control circuit is further configured to control the locking device to lock when the door guardrail is in a closed state for a preset duration of outputting the unlocking control signal.

3. The system according to claim 1, further comprising: Alarm module; The control circuit is connected to the alarm module, and the control circuit is also used to control the alarm module to sound an alarm when the door guardrail is open for a duration longer than a preset time.

4. The system according to claim 3, wherein the control circuit is further configured to control the alarm module to continuously issue an alarm when the door barrier is open for a duration longer than a preset time, until the door barrier is closed or the alarm duration reaches the preset alarm duration.

5. The system according to any one of claims 2-4, further comprising: A gate railing status detection device is connected to the control circuit. The gate railing status detection device is used to detect the opening and closing of the gate railing and outputs a detection signal to the control circuit to characterize whether the gate railing is open or closed.

6. The system according to claim 1, wherein the first preset range covers the second preset range, and the active detection sensor comprises: The first transmitter is installed at the preset height position and is used to provide a transmission signal within a second preset range around the door railing; A first receiver is configured corresponding to the first transmitter. The first receiver is used to receive the transmitted signal and output the second sensing signal when the transmitted signal is not received. The control circuit is used to control the first transmitter to provide a transmission signal upon receiving the first sensing signal.

7. The system according to claim 1, 2, 3, 4, or 6, wherein the control circuit comprises: A first controller is connected to the passive pyroelectric infrared detector and the active detection sensor respectively. The first controller is used to output a trigger signal when it receives the first sensing signal and the second sensing signal. as well as A second controller is used to control the locking device to unlock when the trigger signal is received.

8. The system according to claim 7, wherein when an alarm module is included, the alarm module includes a first alarm indicator light, and the first controller is connected to the first alarm indicator light.

9. The system according to claim 7, wherein when an alarm module is included, the alarm module includes a second alarm indicator light and a buzzer, and the second controller is connected to the second alarm indicator light and the buzzer respectively.

10. The system according to claim 7, wherein the gate railing unlocking control system further comprises a second transmitter and a second receiver; the second receiver is configured correspondingly to the second transmitter, the first controller is respectively connected to the passive pyroelectric infrared detector, the active detection sensor and the second transmitter, the first controller controls the second transmitter to emit an optical signal when receiving the first sensing signal and the second sensing signal, the second receiver converts the optical signal into an electrical signal and transmits it to the second controller when receiving the optical signal, and the second controller controls the locking device to unlock when receiving the electrical signal.

11. The system according to claim 3, 4, 8, 9, or 10, wherein the system comprises: A power supply battery is provided to provide operating voltage for the connected passive pyroelectric infrared detector, the active detection sensor, and the control circuit. The control circuit is used to detect the remaining power of the power supply battery, and when the remaining power is lower than a preset power threshold, it controls the alarm module to issue an alarm.

12. The system according to claim 11, wherein the system includes a first controller, a second controller, a second transmitter, and a second receiver, the power supply battery includes a first battery and a second battery, the first battery being connected to the passive pyroelectric infrared detector, the active detection sensor, the first controller, the second transmitter, and the first alarm indicator light, respectively, and the second battery being connected to the second controller, the second alarm indicator light, the buzzer, and the second receiver, respectively.

13. The system according to claim 1, 2, 3, 4, 6, 8, 9, 10, or 12, wherein the active detection sensor is an infrared sensor; and / or, The passive pyroelectric infrared detector includes: Pyroelectric sensor; A Fresnel lens is fitted onto the pyroelectric sensor to receive infrared radiation emitted by the human body within the first preset range.

14. In the system according to claim 5, the gate guardrail status detection device is a Hall sensor.

15. A smart gate fence, comprising: A guardrail frame, wherein the guardrail frame is provided with an entrance and exit; The guardrail body has one side rotatably connected to the guardrail frame, and the guardrail body is used to open or close the entrance / exit. A locking device, wherein the locking device is disposed on the guardrail body and / or the guardrail frame, the locking device being used to lock or unlock the guardrail body and the guardrail frame; and The gate and fence unlocking control system as described in any one of claims 1-9.

16. The intelligent door guardrail according to claim 15, wherein the locking device includes a door lock driver, a transmission device, a lock tongue, and a limiting groove that cooperates with the locking; in, The latch and the limiting groove are respectively provided on the guardrail frame and the guardrail body. The door lock driver is connected to the control circuit and the transmission device, and the transmission device is connected to the latch.

17. The intelligent door guardrail according to claim 16, wherein there are multiple locking tongues and limiting grooves.

18. The intelligent gate railing according to claim 15, wherein the railing body comprises a plurality of spaced-apart bars.

Images