CN216918247U - Elevator light curtain capable of detecting transparent object - Google Patents
Elevator light curtain capable of detecting transparent object Download PDFInfo
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- CN216918247U CN216918247U CN202123068654.2U CN202123068654U CN216918247U CN 216918247 U CN216918247 U CN 216918247U CN 202123068654 U CN202123068654 U CN 202123068654U CN 216918247 U CN216918247 U CN 216918247U
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Abstract
The utility model relates to an elevator light curtain capable of detecting transparent objects, which comprises a plurality of signal transmitting units, a plurality of first signal receiving units and a plurality of second signal receiving units, wherein the plurality of signal transmitting units are arranged at a transmitter end, the plurality of first signal receiving units are arranged at a receiver end, each second signal receiving unit is matched with at least one corresponding signal transmitting unit to form at least one group of reflection detection assemblies, the second signal receiving units in the reflection detection assemblies can receive reflection signals, and the reflection signals are signals which are sent by the signal transmitting units in the reflection detection assemblies and reflected by the transparent objects. The utility model can detect transparent objects and avoid safety accidents.
Description
Technical Field
The utility model relates to the technical field of elevator equipment, in particular to an elevator light curtain capable of detecting transparent objects.
Background
The existing elevator light curtain is a safety protection device for an infrared elevator door, is suitable for various vertical elevators and protects the safety of passengers. The elevator car consists of four parts, namely an infrared transmitter and an infrared receiver which are arranged on two sides of a car door of an elevator, a power box arranged on the top of the car and a special flexible cable. Under the control of the MCU, the transmitting and receiving tubes are sequentially opened to continuously scan the car door area from top to bottom to form an intensive infrared protection area. When any beam of light is blocked, the control system immediately outputs a door opening signal, the car door stops closing and rotates reversely to open until the elevator door can be normally closed after the passenger or the blocking object leaves the warning area, so that the safety protection purpose is achieved, and the occurrence of accidents caused by people being in the elevator can be avoided. What elevator light curtain adopted is that the infrared detection principle, and the infrared ray has certain penetrability, detects no problem to non-transparent object, nevertheless to transparent object, for example glass, the infrared ray can pierce through glass, just can't detect out, causes glass to be pressed from both sides at the in-process of carrying into elevator car, arouses the incident, and this is the pain point of elevator light curtain also.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing an elevator light curtain capable of detecting transparent objects, which can detect the transparent objects and avoid safety accidents.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the elevator light curtain capable of detecting the transparent object comprises a plurality of signal emitting units, a plurality of first signal receiving units and a plurality of second signal receiving units, wherein the signal emitting units are arranged at an emitter end, the first signal receiving units are arranged at a receiver end, each second signal receiving unit is matched with at least one corresponding signal emitting unit to form at least one group of reflection detection assemblies, the second signal receiving units in the reflection detection assemblies can receive reflection signals, and the reflection signals are signals which are emitted by the signal emitting units in the reflection detection assemblies and reflected by the transparent object.
The second signal receiving unit is disposed at the transmitter end.
The number of the signal transmitting units is the same as that of the second signal receiving units, and the signal transmitting units and the second signal receiving units correspond to each other one by one.
The signal transmitting unit and the second signal receiving unit are arranged at intervals.
And a light-blocking device is arranged between the signal transmitting unit and the second signal receiving unit.
The signal transmitting unit is an infrared transmitting mechanism, and the first signal receiving unit and the second signal receiving unit are both infrared receiving mechanisms.
Advantageous effects
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following advantages and positive effects: the utility model utilizes the characteristic that the reflection energy of the transparent object can emit light, adds a group of receiving units in the emitter, and receives the light reflected by the transparent object through the receiving units, thereby realizing the detection of the transparent object.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a flow chart of the use of an embodiment of the present invention.
Detailed Description
The utility model will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The embodiment of the utility model relates to an elevator light curtain capable of detecting transparent objects, which comprises a plurality of signal transmitting units 1, a plurality of first signal receiving units 2 and a plurality of second signal receiving units 5, wherein the plurality of signal transmitting units 1 are arranged at a transmitter end 3, the plurality of first signal receiving units 2 are arranged at a receiver end 4, each second signal receiving unit 5 is matched with at least one corresponding signal transmitting unit 1 to form at least one group of reflection detection assemblies, the second signal receiving units 5 in the reflection detection assemblies can receive reflection signals 6, and the reflection signals 6 are signals which are emitted by the signal transmitting units 1 in the reflection detection assemblies and reflected by the transparent objects 7, as shown in figure 1. The signal transmitting unit 1 in the present embodiment may employ an infrared transmitting mechanism, such as an infrared transmitting tube; the first signal receiving unit 2 and the second signal receiving unit 5 may each employ an infrared receiving mechanism such as an infrared receiving tube.
The second signal receiving unit 5 can be disposed at any position such as the floor or the ceiling as long as it can receive the reflected signal 6. In this embodiment, the second signal receiving unit 5 is disposed at the transmitter end 3, so that it is ensured that one second signal receiving unit 5 can receive the reflected signal regardless of the distance between the transparent object 7 and the transmitter end 3. The number of the signal transmitting units 1 is the same as that of the second signal receiving units 5, and the signal transmitting units 1 and the second signal receiving units 5 are arranged at intervals. In order to prevent the interference of light inside the transmitter end 3, in the present embodiment, a light blocking sheet 8 is disposed between the signal transmitting unit 1 and the second signal receiving unit 5 as a light blocking device, so that the occurrence of false detection can be avoided.
The detection flow of the elevator light curtain capable of detecting the transparent object according to the present embodiment is shown in fig. 2.
The signal transmitting unit 1, the first signal receiving unit 2 and the second signal receiving unit 5 are synchronized according to the synchronization signal, the signal transmitting unit 1 transmits the infrared signals one by one in the top-bottom order, and the first signal receiving unit 2 and the second signal receiving unit 5 also receive the infrared signals one by one in the corresponding order. When the first signal receiving unit 2 does not receive the infrared signal, it indicates that an object is detected in the detection range, that is, a foreign object exists, and at this time, the controller opens the elevator door; when the first signal receiving unit 2 receives an infrared signal, it is necessary to determine whether the second signal receiving unit 5 receives the infrared signal. When the second signal receiving unit 5 does not receive the infrared signal, it indicates that there is no foreign object, and at this time, the controller will close the elevator door, and when the second signal receiving unit 5 receives the infrared signal, it indicates that there is a transparent object in the detection range, i.e., there is a foreign object, and at this time, the controller will open the elevator door.
It is not difficult to find that the utility model utilizes the characteristic that the reflection energy of the transparent object can emit light, adds a group of receiving units in the emitter, and receives the light reflected by the transparent object through the receiving units, thereby realizing the detection of the transparent object.
Claims (6)
1. The elevator light curtain capable of detecting the transparent object comprises a plurality of signal emitting units and a plurality of first signal receiving units, wherein the signal emitting units are arranged at an emitter end, the first signal receiving units are arranged at a receiver end, and the elevator light curtain is characterized by further comprising a plurality of second signal receiving units, each second signal receiving unit is matched with at least one corresponding signal emitting unit to form at least one group of reflection detection assemblies, the second signal receiving units in the reflection detection assemblies can receive reflection signals, and the reflection signals are signals which are sent by the signal emitting units in the reflection detection assemblies and reflected by the transparent object.
2. The elevator light curtain capable of detecting transparencies according to claim 1, characterized in that said second signal receiving unit is arranged at said transmitter end.
3. The elevator light curtain capable of detecting transparent objects as claimed in claim 1, wherein the number of the signal emitting units and the number of the second signal receiving units are the same and correspond to one another.
4. The elevator light curtain capable of detecting transparent objects as recited in claim 2, wherein the signal emitting unit and the second signal receiving unit are spaced apart.
5. The elevator light curtain capable of detecting transparent objects as claimed in claim 3, wherein a light-blocking device is disposed between the signal emitting unit and the second signal receiving unit.
6. The elevator light curtain capable of detecting transparent objects as claimed in claim 1, wherein the signal emitting unit is an infrared emitting mechanism, and the first signal receiving unit and the second signal receiving unit are both infrared receiving mechanisms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123068654.2U CN216918247U (en) | 2021-12-08 | 2021-12-08 | Elevator light curtain capable of detecting transparent object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123068654.2U CN216918247U (en) | 2021-12-08 | 2021-12-08 | Elevator light curtain capable of detecting transparent object |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216918247U true CN216918247U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123068654.2U Active CN216918247U (en) | 2021-12-08 | 2021-12-08 | Elevator light curtain capable of detecting transparent object |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216918247U (en) |
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2021
- 2021-12-08 CN CN202123068654.2U patent/CN216918247U/en active Active
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