An elevator light curtain structure with overvoltage protection function based on internet of things

Abstract

The application discloses an elevator light curtain structure with overvoltage protection function based on Internet of Things, and relates to the technical field of elevator light curtain, which comprises a transmitting assembly, a receiving assembly and a remote control terminal, the remote control terminal is wirelessly connected with the transmitting assembly and the receiving assembly respectively; the transmitting assembly comprises a fixed tube, a transmitting end and a plurality of reflecting units, the transmitting end is located at the end of the fixed tube, and each reflecting unit is arranged on the fixed tube in sequence; in the application, one transmitting end and a plurality of reflecting units can realize horizontal irradiation of multiple light beams to each corresponding receiving end, so that the cost of the light curtain is greatly reduced, and the uniformity of the product does not need to be considered when the product is shipped, thereby reducing the cost of shipment; meanwhile, the concentration of the inert gas can be adjusted to adjust the refractive index of the inert gas, and the refractive index of the air gas is matched, so that the refractive index of the air gas can be tracked synchronously when the refractive index of the air gas changes, the light can always be ensured to be horizontal, and the practicability of the elevator light curtain is improved.

Description

Technical Field

[0001] This invention relates to the field of elevator light curtain technology, specifically to an elevator light curtain structure based on the Internet of Things with overvoltage protection. Background Technology

[0002] An elevator light curtain, also known as a photoelectric protection device, is an infrared sensing device installed on both sides of the elevator car door. It primarily utilizes infrared or laser technology to detect the presence of objects by emitting and receiving light. Its working principle is that when a passenger or object enters the gap between the elevator car door and the floor door, blocking the infrared light, the light curtain immediately emits a signal, causing the elevator to stop and preventing accidents. For example, with a 100-beam light curtain, if the transmitter emits 100 beams and the receiver receives 100 beams, the light curtain identifies no obstruction, and the elevator closes normally. If the receiver receives 99 or fewer beams, it indicates an obstruction, and the elevator will forcibly open the door until the received beams match the emitted beams before initiating the closing action.

[0003] In existing elevator light curtains, the transmitting end uses multiple transmitting sources to emit light beams. This results in excessive power consumption of the elevator light curtain. In addition, it increases the requirement for uniformity of the transmitting sources. If one transmitting source malfunctions, the entire system needs to be replaced, increasing costs.

[0004] In summary, an elevator light curtain structure with overvoltage protection based on the Internet of Things was designed. Summary of the Invention

[0005] To overcome the above-mentioned shortcomings, the present invention provides an elevator light curtain structure with overvoltage protection based on the Internet of Things.

[0006] The present invention achieves the above objectives through the following technical solutions: An elevator light curtain structure with overvoltage protection based on the Internet of Things includes a transmitting component, a receiving component, and a remote control terminal, wherein the remote control terminal is wirelessly connected to the transmitting component and the receiving component, respectively. The transmitting assembly includes a fixed tube, a transmitting end, and several reflecting units. The transmitting end is located at the end of the fixed tube, and the reflecting units are arranged sequentially on the fixed tube. The reflective unit includes a refracting glass, a first reflective lens, and a second reflective lens. The interior of the fixed tube is filled with an inert gas. The refracting glass is located on the upper side wall of the fixed tube. The emitting end is tilted at 45 degrees. The first reflective lens is located above the upper side wall of the fixed tube and is located on one side of the refracting glass. The first emitting plate is tilted at 15 degrees. The second reflective lens is located on the lower side wall of the fixed tube. The receiving component includes a fixed plate and several receiving ends. The fixed plate and the fixed tube are parallel to each other, and the receiving ends are arranged sequentially on the fixed plate. Each receiving end corresponds to each of the first reflecting mirrors.

[0007] Preferably, there are two transmitters, located at opposite ends of the fixed tube and symmetrical about the central axis of the fixed tube. Each first reflective lens is mirror-symmetrical about the refracting glass. The two transmitters can solve the problem of light attenuation after a certain distance of illumination from one transmitter, which could lead to misjudgment by the corresponding receiver receiving the attenuated light.

[0008] Preferably, the light emitted by the emitting end and reflected off the refracting glass is reflected to the center of the adjacent second reflecting mirror.

[0009] Preferably, one side of the fixed tube is provided with a housing, and the housing contains a signal transceiver, a micro air pump, an air storage box, a drive module and a first controller. The first controller is wirelessly connected to the remote control terminal through the signal transceiver. The first controller controls the micro air pump to inject or extract inert gas from the air storage box into the fixed tube. The first controller controls the transmitter to emit infrared light through the drive module.

[0010] Preferably, a second controller is provided on one side of the fixed plate. The second controller is wirelessly connected to the remote control terminal and electrically connected to each receiving end. The second controller is equipped with a signal transceiver and a signal acquisition module. The MCU of the second controller is wirelessly connected to the remote control terminal through the signal transceiver and electrically connected to each receiving end through the signal acquisition module.

[0011] Preferably, the housing also includes a voltage sensor and a power module. The power module provides a stable operating voltage. The voltage sensor is electrically connected to the input terminal of the power module. A voltage acquisition module is provided between the first controller and the voltage sensor. The voltage sensor detects the input voltage of the power module to prevent overvoltage damage to the transmitter and other modules caused by voltage fluctuations.

[0012] Preferably, the fixed tube is equipped with a pressure sensor, which is electrically connected to the first controller. The pressure sensor can detect the pressure inside the fixed tube and calculate the concentration of the inert gas inside by means of the data, thereby changing the refractive index of the incident medium.

[0013] The beneficial effects of this invention are as follows: In this IoT-based elevator light curtain structure with overvoltage protection, multiple beams of light can be horizontally irradiated to each corresponding receiver by a single transmitter and multiple reflective units, thereby greatly reducing the cost of the light curtain. Furthermore, there is no need to consider product uniformity at the factory, further reducing manufacturing costs. Simultaneously, adjusting the inert gas concentration can adjust the inert gas refractive index, which, in conjunction with the air refractive index, allows for synchronous tracking when the air refractive index changes, ensuring that the light remains horizontal and improving the practicality of the elevator light curtain. Moreover, the voltage sensor detects the input voltage of the power module, preventing overvoltage damage to the transmitter and other modules due to voltage fluctuations. Attached Figure Description

[0014] The present invention will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an enlarged view of part A of the present invention. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0016] like Figure 1 and Figure 2 As shown, an elevator light curtain structure with overvoltage protection based on the Internet of Things includes a transmitting component 3, a receiving component 4, and a remote control terminal 1. The remote control terminal 1 is wirelessly connected to the transmitting component 3 and the receiving component 4 respectively. The transmitting component 3 includes a fixed tube 5, a transmitting end 6, and several reflecting units. The transmitting end 6 is located at the end of the fixed tube 5, and the reflecting units are arranged sequentially on the fixed tube 5. The reflecting unit includes a refracting glass 7, a first reflecting lens 8, and a second reflecting lens 9. An inert gas 10 is provided inside the fixed tube 5. The refracting glass 7 is located on the upper side wall of the fixed tube 5. The transmitting end 6 is tilted at an angle of 45 degrees. The first reflecting lens 8 is located above the upper side wall of the fixed tube 5 and is located on one side of the refracting glass 7. The first transmitting plate is tilted at an angle of 15 degrees. The second reflecting lens 9 is located on the lower side wall of the fixed tube 5. The receiving component 4 includes a fixed plate 12 and several receiving ends 13. The fixed plate 12 is parallel to the fixed tube 5. The receiving ends 13 are arranged sequentially on the fixed plate 12, and each receiving end 13 corresponds to each first reflecting lens 8.

[0017] The working principle of this IoT-based elevator light curtain structure with overvoltage protection is as follows: Remote control terminal 1 receives signals from transmitting component 3 and receiving component 4 to achieve remote control functionality. In transmitting component 3, the transmitting end 6 is tilted at 45 degrees and emits infrared light. After passing through the nearest refractive glass 7, the light is split into two beams. One beam is refracted by the refractive glass 7 and then passes through the first reflecting lens 8. This beam is then directed perpendicularly towards the corresponding receiving end 13 on the opposite side, where it is received. The other beam is reflected by the refractive glass 7 and then emitted through the second transmitting lens, also at a 45-degree angle towards the next refractive glass 7, and so on. This allows one transmitting end 6 to achieve the effect of multiple transmitting ends 6, significantly reducing the cost of the light curtain. Furthermore, product uniformity does not need to be considered during manufacturing, reducing production costs.

[0018] According to the law of refraction of light (Snell's law): ,in The refractive index of the incident medium is... (Angle of incidence) The refractive index of the incident medium is... (Angle of refraction), substituting the data yields... .

[0019] Therefore, there are three media with varying refractive indices: the first is the refractive index of the inert gas 10 in the fixed tube 5, the second is the refractive index of the refracting glass 7, and the third is the refractive index of the air. The refractive index of the air changes according to temperature, humidity, and density. Temperature, humidity, and air pressure sensors installed in the elevator are used to collect this data, which is then used by the remote control terminal 1 to calculate the air's refractive index. This allows the required concentration of the inert gas 10 in the fixed tube 5 to be calculated, thereby adjusting the refractive index of the inert gas 10. This ensures that the light emitted from each of the first reflecting mirrors 8 on the fixed tube 5 is perpendicular to the fixed plate 12 and reliably received by the corresponding receiver 13.

[0020] Specifically, there are two transmitters 6, which are located at the two ends of the fixed tube 5 respectively. The two transmitters 6 are symmetrical about the central axis of the fixed tube 5. Each first reflective lens 8 is mirror-symmetrical about the refracting glass 7. The two transmitters 6 can solve the problem of light attenuation after a certain distance of illumination by a transmitter 6, which would cause the corresponding receiver 13 on the other side to receive the attenuated light and make a misjudgment.

[0021] Specifically, the light emitted by the transmitting end 6 and reflected off the refracting glass 7 is reflected to the center of the adjacent second reflecting mirror 9.

[0022] Specifically, a housing is provided on one side of the fixed tube 5. Inside the housing are a signal transceiver, a micro air pump, an air storage box, a drive module, and a first controller 2. The first controller 2 is wirelessly connected to the remote control terminal 1 through the signal transceiver. The first controller 2 controls the micro air pump to inject or extract the inert gas 10 from the air storage box into the fixed tube 5. The first controller 2 controls the transmitter 6 to emit infrared rays through the drive module.

[0023] Specifically, a second controller 11 is provided on one side of the fixed plate 12. The second controller 11 is wirelessly connected to the remote control terminal 1 and electrically connected to each receiver 13. The second controller 11 is equipped with a signal transceiver and a signal acquisition module. The MCU of the second controller 11 is wirelessly connected to the remote control terminal 1 through the signal transceiver, and the MCU of the second controller 11 is electrically connected to each receiver 13 through the signal acquisition module.

[0024] Specifically, the housing also includes a voltage sensor and a power module. The power module provides a stable operating voltage. The voltage sensor is electrically connected to the input terminal of the power module. A voltage acquisition module is provided between the first controller 2 and the voltage sensor. The voltage sensor detects the input voltage of the power module to prevent overvoltage damage to the transmitter 6 and other modules caused by voltage fluctuations.

[0025] Specifically, the fixed tube 5 is equipped with a pressure sensor, which is electrically connected to the first controller 2. The pressure sensor can detect the pressure inside the fixed tube 5 and calculate the concentration of the inert gas 10 inside by means of the data, thereby changing the refractive index of the incident medium.

[0026] Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this invention. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An elevator light curtain structure with overvoltage protection based on the Internet of Things, characterized in that: It includes a transmitting component, a receiving component, and a remote control terminal, with the remote control terminal wirelessly connected to both the transmitting component and the receiving component. The transmitting assembly includes a fixed tube, a transmitting end, and several reflecting units. The transmitting end is located at the end of the fixed tube, and the reflecting units are arranged sequentially on the fixed tube. The reflective unit includes a refracting glass, a first reflective lens, and a second reflective lens. The interior of the fixed tube is filled with an inert gas. The refracting glass is located on the upper side wall of the fixed tube. The emitting end is tilted at 45 degrees. The first reflective lens is located above the upper side wall of the fixed tube and is located on one side of the refracting glass. The first emitting plate is tilted at 15 degrees. The second reflective lens is located on the lower side wall of the fixed tube. The receiving component includes a fixed plate and several receiving ends. The fixed plate and the fixed tube are parallel to each other, and the receiving ends are arranged sequentially on the fixed plate. Each receiving end corresponds to each of the first reflecting mirrors.

2. The elevator light curtain structure with overvoltage protection based on the Internet of Things as described in claim 1, characterized in that: The number of transmitters is two, with the two transmitters located at the two ends of the fixed tube respectively, and the two transmitters are symmetrical about the central axis of the fixed tube. Each first reflective lens is provided with a first reflective lens that is mirror-symmetrical about the refracting glass.

3. The elevator light curtain structure with overvoltage protection based on the Internet of Things as described in claim 1, characterized in that: The light emitted from the transmitting end and reflected off the refracting glass is reflected to the center of the adjacent second reflecting mirror.

4. The elevator light curtain structure with overvoltage protection based on the Internet of Things as described in claim 1, characterized in that: One side of the fixed tube is provided with a housing, inside which are a signal transceiver, a micro air pump, an air storage box, a drive module and a first controller. The first controller is wirelessly connected to the remote control terminal through the signal transceiver. The first controller controls the micro air pump to inject or extract inert gas from the air storage box into the fixed tube. The first controller controls the transmitter to emit infrared light through the drive module.

5. The elevator light curtain structure with overvoltage protection based on the Internet of Things as described in claim 1, characterized in that: A second controller is provided on one side of the fixed plate. The second controller is wirelessly connected to the remote control terminal and electrically connected to each receiver.

6. The elevator light curtain structure with overvoltage protection based on the Internet of Things as described in claim 4, characterized in that: The housing also includes a voltage sensor and a power module. The power module provides a stable operating voltage. The voltage sensor is electrically connected to the input terminal of the power module. A voltage acquisition module is provided between the first controller and the voltage sensor.

7. The elevator light curtain structure with overvoltage protection based on the Internet of Things as described in claim 4, characterized in that: A pressure sensor is installed in the fixed tube, and the pressure sensor is electrically connected to the first controller.

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