Switching device and elevator personnel current limiting control device

Abstract

The utility model discloses a switch device and an elevator personnel current-limiting control device, and relates to the technical field of switch control, the switch device comprises an optical coupling relay U1 and a triode Q1, the optical coupling relay U1 comprises a light emitting body and a light receiving body, a first pin of the light emitting body is connected with a power supply, and a second pin of the light emitting body is connected with a collector electrode of the triode Q1; the base electrode of the triode Q1 is used for receiving a control signal; a first pin of the light receiving body is connected with a plurality of switches, the triode Q1 is set to control the on or off state of the triode Q1 through a control signal so as to control the light emitting state of the light emitting body, and the light emitting state of the light emitting body is set to switch the response state to the switches. According to the utility model, through the combination of the optocoupler relay and the triode, the control signal and the load circuit are electrically isolated, so that the light emitting state of the light emitting body is accurately controlled, and the purposes of realizing the electrical isolation of the signal and avoiding interference are achieved by using the optocoupler relay.

Description

TECHNICAL FIELD

[0001] The utility model relates to a switch control technical field, concretely relates to a switch device and ladder cage personnel current -limiting control device. BACKGROUND

[0002] The box type manway ladder is also called box type ladder cage and is mainly used for climbing on bridges, deep foundation pit subway construction and pier column construction, and can also be used as a safe pedestrian passageway during building foundation pit construction, and the main components are frame, ladder, handrail and protective net, etc.

[0003] The box type ladder cage has high structural strength, good overall stability, suitable width of the manway ladder, free staggered up and down, and is very convenient for carrying tools, etc.

[0004] However, the existing early warning equipment lacks electrical isolation, the control signal and the load circuit are usually directly connected, there is no effective isolation measure, the circuit is easily affected by external electromagnetic interference, leading to signal fluctuation, and the interference signal may be misidentified as an effective signal, thus triggering an error warning, so that the equipment cannot accurately and timely control the number of people in the ladder cage.

[0005] Therefore, the present application is proposed. UTILITY MODEL CONTENT

[0006] The utility model discloses a switch device and ladder cage personnel current -limiting control device, the combination of photoelectric coupling relay and triode is used to electrically isolate the control signal and the load circuit, so as to solve the problem that the control signal cannot accurately and timely control the switch response in the prior art.

[0007] The utility model discloses an embodiment of the utility model realizes through the following technical scheme: first, the utility model discloses an embodiment of a switch device, including photoelectric coupling relay U1 and triode Q1, the photoelectric coupling relay U1 includes luminous body and light receiver, the first pin of luminous body is connected power supply, and its second pin is connected with the collector of triode Q1;

[0008] The base of the triode Q1 is used to receive a control signal, and the emitter thereof is grounded;

[0009] The first pin of the light receiver is connected with a plurality of switches, and the second pin thereof is grounded. The triode Q1 is arranged to control the on or off state thereof by a control signal to control the light emitting state of the light emitter. The light emitting state of the light emitter is arranged to switch the response state of the switches.

[0010] Optionally, a first resistor R1 and a second resistor R2 are further included. The first pin of the light emitter is connected with a power supply through the first resistor R1. The base of the triode Q1 is used to connect an input device of the control signal through the second resistor R2.

[0011] Optionally, the second pin of each of the switches is connected with a power supply through one of the pull-up resistors. The second pin of each of the switches is connected with an input device of the control signal.

[0012] Optionally, when the triode Q1 is in the on state, the light emitter is in the light emitting state. The light receiver is arranged to switch the response state of the switches according to the light emitting state of the light emitter.

[0013] Optionally, the light emitter comprises a light emitting diode, and the light receiver comprises a photosensitive triode.

[0014] Optionally, the switches are arranged to be at least two, and the pull-up resistors are arranged to be at least two.

[0015] In order to better solve the above problems, the utility model embodiment further provides a ladder cage personnel flow control device, including image acquisition device, people detection device, ladder cage control device and above-mentioned switch device, image acquisition device is used to gather the image information in deep foundation pit ladder cage and sends to people detection device, people detection device is arranged to accept image information and statistics personnel quantity in the ladder cage, personnel quantity generates a trigger signal and sends to ladder cage control device, ladder cage control device is arranged to according to trigger signal control the response state of the ladder cage outside call button in switch device;

[0016] The base of the triode Q1 is connected to the signal output end of the ladder cage control device.

[0017] Optionally, the image acquisition device includes a first camera and a second camera. When the inner space of the deep foundation pit ladder cage is a quadrangular prism, the first camera and the second camera are respectively arranged at the diagonal positions of the top of the inner wall of the deep foundation pit ladder cage.

[0018] Optionally, the people detection device includes an image processor, and the image processor is connected with the first camera and the second camera.

[0019] Optionally, the ladder cage control device comprises a single chip.

[0020] Compared with the prior art, the embodiments of the utility model have the following advantages and beneficial effects:

[0021] 1、 the switch device provided by the utility model embodiment, through setting the photocoupler U1 including the luminous body and the light receiver, when the luminous body is turned on, the light irradiates the light receiver, triggers the conduction of the light receiver, thereby realizing the response state switching of the switch, the collector of the triode Q1 is connected with the second pin of the luminous body, provides the current path for the luminous body, the base receives the control signal, according to the level state (high level or low level) of the control signal, decides the conduction or cut-off state of the triode Q1. The switch device not only realizes the electrical isolation of the control signal and the load circuit, but also guarantees the accurate and timely response control of the control signal to the switch.

[0022] 2、 the ladder cage personnel flow control device provided by the utility model embodiment, the image acquisition device collects the image information in the ladder cage in real time, the number detection device receives the image information, the personnel quantity in the ladder cage is counted through the existing image processing technology, if the personnel quantity exceeds the preset threshold value, the number detection device generates a trigger signal (such as high level signal), if it does not exceed the threshold value, then another trigger signal (such as low level signal) is generated, the ladder cage control device receives the trigger signal of the number detection device, according to the state of the trigger signal, the ladder cage control device outputs the corresponding control signal to the base of the triode Q1 of the switch device, when the ladder cage control device outputs the high level signal, the triode Q1 is turned on, the current flows into the luminous body through the collector, so that it emits light, when the ladder cage control device outputs the low level signal, the triode Q1 is cut off, and the luminous body does not emit light. When the luminous body emits light, the light receiver is turned on, and the signal of the call button outside the ladder cage can be transmitted to the ladder cage control device, and the ladder cage responds to the button signal, when the luminous body does not emit light, the light receiver is cut off, and the signal of the call button outside the ladder cage is blocked, and the ladder cage does not respond to the button signal.

[0023] The utility model embodiment can count the personnel quantity in the ladder cage in real time and accurately through the image acquisition and number detection device, ensure the accuracy of the flow control, automatically block the call button signal when the number of people in the ladder cage reaches the preset threshold value, prevent the overloading operation of the ladder cage, ensure the safety of passengers, realize the intelligent personnel flow control by combining the existing image processing and artificial intelligence technology, reduce the manual intervention, realize the electrical isolation of the signal by using the photocoupler U1, avoid the interference of strong current to weak current signal, improve the stability and reliability of the system. The device can effectively solve the problem that the early warning equipment in the prior art cannot accurately and timely control the number of people in the ladder cage, and improve the safety and intelligent level of the ladder cage system.

[0024] Overall, the embodiment of the utility model provides a kind of switch device and ladder cage personnel current-limiting control device, which is combined by photocoupler relay and triode, control signal is electrically isolated with load circuit, to realize the accurate control to the luminous state of luminous body, photocoupler relay is used to realize the electrical isolation of signal, to avoid the purpose of interference. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawing needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying creative labor, other related drawings can also be obtained according to these drawings.

[0026] Figure 1 The switch device circuit structure schematic diagram provided for the embodiment 1 of the utility model;

[0027] Figure 2 The ladder cage personnel current-limiting control device structure schematic diagram provided for the embodiment 2 of the utility model. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantage of the embodiment of the utility model more clear, the following will be combined with the drawing in the embodiment of the utility model, the technical scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment.Usually the components of the embodiment of the utility model described and demonstrated in the drawing here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiment of the utility model provided in the drawing is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiment in the utility model, all other embodiments obtained by ordinary skilled person in the art without making creative labor are within the scope of the utility model protection.

[0030] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0031] In the description of the utility model, it should be explained that, the terms "first", "second", "third" and the like are only used for distinguishing description, and can not be understood as indicating or implying relative importance.

[0032] EMBODIMENT

[0033] Embodiment 1: asFigure 1 The utility model discloses an opening and closing device, opening and closing device includes photoelectric coupler U1, triode Q1, first resistance R1, second resistance R2 and with the same number of switch as a number of pull -up resistance, photoelectric coupler U1 includes luminous body and light receiver, wherein luminous body is light emitting diode, and light receiver is photosensitive triode. It needs to be explained that the switch here can be set as the cage call button, and the number of the cage call button and the pull -up resistance is not limited here, and can be set according to actual demand, for the convenience of understanding, the utility model embodiment is provided with the cage call button K1 and pull -up resistance R3 as shown in the figure, in other embodiments, still can set up the cage call button K2 and pull -up resistance R4 etc. with the cage call button K1 and pull -up resistance R3 in parallel. Wherein in the cage call button Kn and pull -up resistance Rn, n is the integer greater than 2.

[0034] The first pin of the luminous body is connected with the DC power supply +5V after the first resistance R1 is connected, the second pin of the luminous body is connected with the collector of the triode Q1, the base of the triode Q1 is connected with the signal output end of the cage control device after the second resistance R2 is connected, and the emitter of the triode Q1 is grounded.

[0035] The first pin of the light receiver is connected with the first pin of each cage call button, the second pin of each cage call button is connected with the DC power supply +5V after a pull -up resistance is connected, and the second pin of each cage call button is also connected with a signal input end of the cage control device, and the second pin of the light receiver is grounded.

[0036] Exemplarily, since the call button is arranged on the cage call panel in the prior art, and the number of the personnel who needs service in the deep foundation pit underground layer is n-2, for the convenience of understanding, the utility model embodiment is configured with 2 (n-2) pull -up resistances for 2 (n-2) cage call buttons, and the cage control device is correspondingly provided with 2 (n-2) signal input ends; in Figure 1 Exemplarily, since the call button is arranged on the cage call panel in the prior art, and the number of the personnel who needs service in the deep foundation pit underground layer is n-2, for the convenience of understanding, the utility model embodiment is configured with 2 (n-2) pull -up resistances for 2 (n-2) cage call buttons, and the cage control device is correspondingly provided with 2 (n-2) signal input ends; in

[0037] When the personnel go up and down the deep foundation pit cage, the overloading and overstaffing situation often occurs, to prevent the irrelevant personnel and non-operating personnel from entering the construction area, reduce the occurrence of the deep foundation pit safety accident, the number of the personnel in the deep foundation pit cage must be strictly controlled, the opening and closing device provided by the utility model embodiment can be applied to the scene, through the combination with the existing counting device, if the overstaffing situation occurs, the alarm directly appears, and the management personnel are informed to deal with the situation. Exemplarily, as follows embodiment 2:

[0038] Embodiment 2: as shown, a ladder cage personnel flow control device is provided, comprising an image acquisition device, a person number detection device, a ladder cage control device and the switch device provided in embodiment 1, wherein a plurality of ladder cage call buttons are connected with the ladder cage control device through the switch device. The image acquisition device is used for acquiring image information in the deep foundation pit ladder cage and sending to the person number detection device, the person number detection device generates a trigger signal according to the number of persons in the ladder cage counted from the image information and sends to the ladder cage control device, and the ladder cage control device switches the response state of the plurality of ladder cage call buttons according to the trigger signal, wherein the ladder cage control device comprises a single chip. Figure 2

[0039] As a preferred embodiment of the utility model, the image acquisition device comprises a first camera and a second camera, the first camera and the second camera are respectively arranged at the top diagonal positions of the inner surface of the deep foundation pit ladder cage, and the first camera and the second camera are used for collecting bird's-eye image data of persons inside the deep foundation pit ladder cage in the ladder cage scene. Compared with the prior art in which the camera is arranged at one corner of the top of the inner surface of the deep foundation pit ladder cage, the embodiment of the utility model can avoid the problem of incomplete single image acquisition caused by the dead angle of the camera area.

[0040] Of course, the existing image processor can be arranged in the person number detection device, the image processor is connected with the first camera and the second camera, is used for extracting the head bounding box of all persons inside the deep foundation pit ladder cage from the bird's-eye image data collected by the camera, counting the number of extracted head bounding boxes, and then obtaining the number of persons inside the deep foundation pit ladder cage, compared with the commonly used infrared sensor counting mode in the prior art, the accuracy of person number counting can be improved.

[0041] On this basis, the image processor is further used for generating a high-level trigger signal and transmitting it to the ladder cage control device when it is detected that the number of persons in the ladder cage is greater than or equal to a preset threshold, or generating a low-level trigger signal and transmitting it to the ladder cage control device when it is detected that the number of persons in the ladder cage is less than the preset threshold. Since the ladder cage control device is mainly used for realizing global control of the basic running state of the ladder cage, as a preferred embodiment of the utility model, by using the existing image processor to separately execute the person number detection and result feedback device, the running cost of the ladder cage control device can be reduced.

[0042] ​In use, the cage control device sends a high level signal to its signal output end after receiving the low level trigger signal sent by the image processor, so that the transistor Q1 is turned on, and then the photoelectric coupler enters the working mode; at this time, the person outside the deep foundation pit floor where the person is located presses the call button K1, and the signal input end of the cage control device receives the low level feedback signal to control the cage to stop at the deep foundation pit floor where the person is located.

[0043] Conversely, the cage control device sends a low level signal to its signal output end after receiving the high level trigger signal sent by the image processor, so that the transistor Q1 is not turned on, and then the photoelectric coupler U1 cannot work, and the power supply circuit of the call button K1 and the call button K2 is cut off; at this time, the construction personnel outside the deep foundation pit floor where the person is located press any one of the call buttons, which is invalid operation, and the cage control device will not control the cage to stop at the deep foundation pit floor where the person is located, thereby ensuring that the number of people inside the deep foundation pit cage does not increase.

[0044] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. It should be noted that the structures or components shown in the drawings are not necessarily drawn to scale, and the present application omits the description of known components and processing technologies and processes to avoid unnecessary limitation of the present application.

Claims

1. A switching device, characterized by The light coupling relay U1 includes a light emitter and a light receiver, the first pin of the light emitter is connected to a power supply, and the second pin thereof is connected to the collector of the transistor Q1; The base of the transistor Q1 is used to receive a control signal, and the emitter thereof is grounded; The first pin of the light receiver is connected to a plurality of switches, and the second pin thereof is grounded, the transistor Q1 is arranged to control its on or off state by a control signal to control the light emitting state of the light emitter, and the light emitting state of the light emitter is arranged to switch the response state of the switches.

2. A switching device according to claim 1, wherein Further comprising a first resistor R1 and a second resistor R2, the first pin of the light emitter is connected to a power supply through the first resistor R1, and the base of the transistor Q1 is used to connect the input device of the control signal through the second resistor R2.

3. A switching device according to claim 2, wherein Further comprising a plurality of pull-up resistors, the second pin of each switch is connected to a power supply through one of the pull-up resistors, and the second pin of each switch is connected to the input device of the control signal.

4. A switching device according to claim 3, wherein When the transistor Q1 is in the on state, the light emitter is in the light emitting state, and the light receiver is arranged to switch the response state of the switches according to the light emitting state of the light emitter.

5. A switching device according to claim 1, wherein The light emitter includes a light emitting diode, and the light receiver includes a photosensitive transistor.

6. A switching device according to claim 3, wherein The switches are arranged to be at least two, and the pull-up resistors are arranged to be at least two.

7. A personnel flow limiting control device for an elevator cage, characterized in that The image acquisition device is used to acquire image information in the deep foundation pit cage and send it to the number of people detection device, the number of people detection device is arranged to receive image information and count the number of personnel in the cage, and then generate a trigger signal to send to the cage control device, and the cage control device is arranged to control the response state of the cage call button in the switch device according to the trigger signal; The base of the transistor Q1 is connected to the signal output end of the cage control device.

8. A personnel flow control device for a ladder cage according to claim 7, characterised in that, The image acquisition device includes a first camera and a second camera, when the inner space of the deep foundation pit cage is a quadrangular prism, the first camera and the second camera are arranged at the opposite diagonal positions of the top of the inner wall of the deep foundation pit cage.

9. A personnel flow control device for a ladder cage according to claim 8, characterised in that, The number of people detection device includes an image processor, and the image processor is connected to the first camera and the second camera.

10. A personnel flow control device for a ladder cage according to claim 7, wherein, The cage control device includes a single chip.

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