Elevator maintenance projection warning device

Abstract

The utility model discloses an elevator maintenance projection warning device, and relates to the technical field of elevator maintenance. The device comprises a plurality of projection devices, and the projection devices are installed at the doorway of a multi-layer elevator in a one-to-one correspondence mode. The car roof maintenance box maintenance feedback circuit is used for generating a first high level signal in response to a maintenance starting operation which is triggered by a user and aims at the car roof maintenance box; the elevator control cabinet maintenance feedback control circuit is respectively connected with the plurality of projection devices and the car roof maintenance box maintenance feedback circuit, and the elevator control cabinet maintenance feedback control circuit is used for generating a second high-level signal in response to a maintenance starting operation which is triggered by a user and aims at the elevator control cabinet; and when the second high-level signal is generated or the car roof maintenance box maintenance feedback circuit generates the first high-level signal, the multiple projection devices are started. The elevator maintenance projection warning device disclosed by the utility model can be used for carrying out safety warning at elevator entrances of all floors when the elevator is maintained.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevator maintenance, and in particular relates to an elevator maintenance projection warning device. Background Art

[0002] Elevators are special equipment that are closely related to people's daily lives. People who have not received professional safety training will also come into contact with and use elevators in their daily lives. According to requirements, elevators must undergo maintenance work at regular intervals, and the maintenance work is not affected by holidays. It can be seen that a large number of elevators need maintenance work every day.

[0003] During elevator maintenance, staff members manually unlock and open floor doors to test the effectiveness of protective devices. If someone is not paying attention, such as by looking at their phone, they could fall into the shaft, posing a serious risk. Currently, elevators are equipped with fences as safety warnings during maintenance. However, floors are generally very high, and placing fences outside every elevator entrance would consume a significant amount of maintenance staff's time and energy, and would also require the preparation of a large number of fences, making this difficult to implement in current practice. Therefore, the common practice is to only place fences at the elevator entrance on the first floor, leaving significant safety hazards at the elevator entrances on other floors.

[0004] Therefore, how to provide an effective solution to provide safety warnings at the elevator entrances on each floor during elevator maintenance has become a difficult problem to be solved urgently in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide an elevator maintenance projection warning device to solve the above-mentioned problems existing in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An elevator maintenance projection warning device, comprising:

[0008] A plurality of projection devices, each of which is installed in a one-to-one correspondence at the door of a multi-story elevator;

[0009] a car top inspection box inspection feedback circuit, the car top inspection box inspection feedback circuit being configured to generate a first high level signal in response to a user-triggered inspection start operation for the car top inspection box;

[0010] An elevator control cabinet maintenance feedback control circuit is respectively connected to the multiple projection devices and the car top inspection box maintenance feedback circuit. The elevator control cabinet maintenance feedback control circuit is used to generate a second high-level signal in response to a user-triggered maintenance start operation for the elevator control cabinet, and to start the multiple projection devices when the second high-level signal is generated or the car top inspection box maintenance feedback circuit generates the first high-level signal.

[0011] Based on the above-disclosed content, the elevator maintenance projection warning device provided by the present invention is configured by setting multiple projection devices, a car top inspection box maintenance feedback circuit and an elevator control cabinet maintenance feedback control circuit. The elevator control cabinet maintenance feedback control circuit is respectively connected to the multiple projection devices and the car top inspection box maintenance feedback circuit, wherein the multiple projection devices are installed one-to-one at the door of a multi-story elevator. The car top inspection box maintenance feedback circuit is used to generate a first high-level signal in response to a user-triggered maintenance start operation for the car top inspection box. The elevator control cabinet maintenance feedback control circuit is used to generate a second high-level signal in response to a user-triggered maintenance start operation for the elevator control cabinet, and to start the multiple projection devices when the second high-level signal is generated or the car top inspection box maintenance feedback circuit generates the first high-level signal. In this way, during the elevator maintenance process, whether the maintenance start operation is triggered in the car top inspection box or in the elevator control cabinet, a high-level signal can be generated based on the maintenance start operation and the projection device at the elevator door of each floor can be controlled to start based on the generated high-level signal, thereby providing safety warnings at the elevator entrances on each floor through projection, reminding people to pay attention to safety and prevent the occurrence of safety accidents. At the same time, it can also avoid users' dissatisfaction and complaints caused by elevator failures, thereby improving the user experience.

[0012] In one possible design, the maintenance feedback circuit of the car top inspection box includes a first processor and a first IO detection circuit, the first processor is connected to the first IO detection circuit, and the first IO detection circuit is connected to the IO interface of the maintenance switch circuit of the car top inspection box.

[0013] In one possible design, the elevator maintenance projection warning device also includes a first switching switch, and the car top inspection box maintenance feedback circuit also includes a first switch detection circuit, and the first switch detection circuit is respectively connected to the first switching switch and the first processor.

[0014] In one possible design, the elevator maintenance projection warning device also includes a first Hall switch, and the car top inspection box maintenance feedback circuit also includes a first Hall signal amplification circuit. The first Hall signal amplification circuit is connected to the first processor, and the Hall element of the first Hall switch is externally mounted on the inspection circuit of the car top inspection box, and the output circuit of the first Hall switch is connected to the first Hall signal amplification circuit.

[0015] In one possible design, the car top inspection box inspection feedback circuit also includes a first power supply, and the first power supply is connected to the first processor.

[0016] In one possible design, the elevator control cabinet maintenance feedback control circuit includes a second processor, a second IO detection circuit and a projection interface circuit, the second processor is connected to the second IO detection circuit and the projection interface circuit respectively, the projection interface circuit is connected to the multiple projection devices, and the second IO detection circuit is connected to the IO interface of the maintenance switch circuit of the elevator control cabinet.

[0017] In one possible design, the elevator maintenance projection warning device also includes a second switching switch, and the elevator control cabinet maintenance feedback control circuit also includes a second switch detection circuit, and the second switch detection circuit is respectively connected to the second switching switch and the second processor.

[0018] In one possible design, the elevator maintenance projection warning device also includes a second Hall switch, and the elevator control cabinet maintenance feedback control circuit also includes a second Hall signal amplification circuit. The second Hall signal amplification circuit is connected to the second processor, and the Hall element of the second Hall switch is externally mounted on the maintenance circuit of the elevator control cabinet, and the output circuit of the second Hall switch is connected to the second Hall signal amplification circuit.

[0019] In one possible design, the elevator control cabinet maintenance feedback control circuit also includes a second power supply, and the second power supply is connected to the second processor.

[0020] In one possible design, the second processor uses an STM32 chip and its peripheral circuits.

[0021] Beneficial effects:

[0022] The elevator maintenance projection warning device provided by the present invention can generate a high-level signal based on the maintenance start operation during the elevator maintenance process, whether the maintenance start operation is triggered in the car top maintenance box or in the elevator control cabinet, and control the projection device at the elevator door of each floor to start based on the generated high-level signal, thereby providing safety warnings at the elevator door of each floor by projection, reminding people to pay attention to safety and preventing the occurrence of safety accidents. At the same time, it can also avoid users' dissatisfaction and complaints caused by elevator malfunctions, thereby improving users' usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A circuit block diagram of the elevator maintenance projection warning device provided in an embodiment of the present application;

[0024] Figure 2A circuit block diagram of the maintenance feedback circuit of the car top maintenance box provided in an embodiment of the present application;

[0025] Figure 3 This is a circuit block diagram of the elevator control cabinet maintenance feedback control circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly introduced below in conjunction with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structures of the drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0027] Example:

[0028] like Figure 1 As shown, this embodiment provides an elevator maintenance projection warning device for providing safety warnings during elevator maintenance. The elevator maintenance projection warning device includes multiple projection devices, a car top inspection box inspection feedback circuit, and an elevator control cabinet inspection feedback control circuit. The elevator control cabinet inspection feedback control circuit is respectively connected to the multiple projection devices and the car top inspection box inspection feedback circuit.

[0029] Among them, multiple projection devices are installed one by one at the door of a multi-story elevator to project a warning sign to remind users. For example, the warning sign can be a text sign saying "Elevator under maintenance, danger, do not approach." In this embodiment of the application, the warning sign projected by the projection device is located exactly in the elevator entrance area.

[0030] The maintenance feedback circuit of the car top inspection box is used to generate a first high-level signal in response to the maintenance start operation of the car top inspection box triggered by the user. The maintenance feedback circuit of the car top inspection box can generate a high-level signal by, but is not limited to, Hall current sampling, circuit on / off, or detecting the interface signal of the maintenance switch circuit of the car top inspection box.

[0031] See also Figure 2The maintenance feedback circuit of the car top inspection box includes a first processor and a first IO detection circuit. The first processor is connected to the first IO detection circuit, which is in turn connected to an IO interface of the maintenance switch circuit of the car top inspection box. During elevator maintenance, maintenance personnel can open the maintenance switch circuit of the car top inspection box. At this time, the maintenance switch circuit of the car top inspection box is energized. Due to the energization, the first IO detection circuit, which is connected to the IO interface of the maintenance switch circuit of the car top inspection box, generates a high-level signal. The first processor feeds the high-level signal back to the maintenance feedback control circuit of the elevator control cabinet, which then activates the multiple projection devices.

[0032] In one or more embodiments, the elevator maintenance projection warning device further includes a first switch (not shown), and the car top inspection box maintenance feedback circuit further includes a first switch detection circuit, which is connected to the first switch and the first processor, respectively. During elevator maintenance, maintenance personnel may close the first switch, at which point the first switch detection circuit detects current and generates a high-level signal. The first processor feeds the high-level signal back to the elevator control cabinet maintenance feedback control circuit, which then activates the multiple projection devices. The first switch may be, but is not limited to, a rocker switch or a push button switch.

[0033] In one or more embodiments, the elevator maintenance projection warning device further includes a first Hall switch, and the car top inspection box inspection feedback circuit further includes a first Hall signal amplification circuit. The first Hall signal amplification circuit is connected to the first processor, and the Hall element of the first Hall switch is externally mounted on the inspection circuit of the car top inspection box. The output circuit of the first Hall switch is connected to the first Hall signal amplification circuit. During elevator maintenance, maintenance personnel can open the inspection switch circuit of the car top inspection box. At this time, the inspection circuit of the car top inspection box is energized. The Hall element generates a Hall signal due to the energization of the inspection circuit, which is amplified by the first Hall signal amplification circuit to generate a high-level signal. The first processor feeds the high-level signal back to the elevator control cabinet inspection feedback control circuit, and the elevator control cabinet inspection feedback control circuit activates the multiple projection devices.

[0034] In addition, the maintenance feedback circuit of the car top maintenance box may further include a first power supply connected to the first processor. By setting the first power supply, power can be supplied to components in the maintenance feedback circuit of the car top maintenance box.

[0035] The elevator control cabinet maintenance feedback control circuit is configured to generate a second high-level signal in response to a user-triggered maintenance initiation operation for the elevator control cabinet, and to activate the multiple projection devices when the second high-level signal is generated or the car-top maintenance box maintenance feedback circuit generates a first high-level signal. The elevator control cabinet maintenance feedback control circuit may generate the high-level signal by, but is not limited to, sampling Hall current, detecting circuit continuity, or detecting an interface signal from a maintenance switch circuit of the car-top maintenance box.

[0036] See also Figure 3 The elevator control cabinet maintenance feedback control circuit includes a second processor, a second I / O detection circuit, and a projection interface circuit. The second processor is connected to the second I / O detection circuit and the projection interface circuit, respectively. The projection interface circuit is connected to multiple projection devices. The second I / O detection circuit is connected to the I / O interface of the maintenance switch circuit of the elevator control cabinet. During elevator maintenance, maintenance personnel can open the maintenance switch circuit of the elevator control cabinet. At this time, the maintenance switch circuit of the elevator control cabinet is energized. The second I / O detection circuit connected to the I / O interface of the maintenance switch circuit of the elevator control cabinet generates a high-level signal due to the energization, and the multiple projection devices are activated by the elevator control cabinet maintenance feedback control circuit.

[0037] In one or more embodiments, the elevator maintenance projection warning device further includes a second switch (not shown), and the elevator control cabinet maintenance feedback control circuit further includes a second switch detection circuit, which is connected to the second switch and the second processor, respectively. During elevator maintenance, maintenance personnel may close the second switch, at which point the second switch detection circuit detects current and generates a high-level signal, activating the multiple projection devices via the elevator control cabinet maintenance feedback control circuit. The second switch may be, but is not limited to, a rocker switch or a pushbutton switch.

[0038] In one or more embodiments, the elevator maintenance projection warning device further includes a second Hall switch, and the elevator control cabinet maintenance feedback control circuit further includes a second Hall signal amplification circuit. The second Hall signal amplification circuit is connected to the second processor, and the Hall element of the second Hall switch is externally mounted on the maintenance circuit of the elevator control cabinet. The output circuit of the second Hall switch is connected to the second Hall signal amplification circuit. During elevator maintenance, maintenance personnel can open the maintenance switch circuit of the elevator control cabinet. At this time, the maintenance circuit of the elevator control cabinet is energized. The Hall element of the second Hall switch generates a Hall signal due to the energization of the maintenance circuit, which is amplified by the second Hall signal amplification circuit to generate a high-level signal. The multiple projection devices are then activated by the elevator control cabinet maintenance feedback control circuit.

[0039] In addition, the elevator control cabinet maintenance feedback control circuit may further include a second power supply connected to the second processor. By setting the second power supply, components in the elevator control cabinet maintenance feedback control circuit can be powered.

[0040] In the embodiment of the present application, the first processor and the second processor may be, but are not limited to, an STM32 chip and its peripheral circuits or an MSP430 chip and its peripheral circuits.

[0041] In an embodiment of the present application, the maintenance feedback circuit of the car-top inspection box is electrically connected to the maintenance feedback control circuit of the elevator control cabinet via a signal line. The signal line can utilize a spare reserved line in the traveling cable of the elevator car. In one or more embodiments, if there is no spare reserved line in the traveling cable, the maintenance feedback circuit of the car-top inspection box and the maintenance feedback control circuit of the elevator control cabinet can also be connected via wireless communication.

[0042] In summary, the elevator maintenance projection warning device provided by the present invention is configured by arranging multiple projection devices, a car top inspection box maintenance feedback circuit and an elevator control cabinet maintenance feedback control circuit. The elevator control cabinet maintenance feedback control circuit is respectively connected to the multiple projection devices and the car top inspection box maintenance feedback circuit, wherein the multiple projection devices are installed one-to-one at the door of a multi-story elevator. The car top inspection box maintenance feedback circuit is used to generate a first high-level signal in response to a user-triggered maintenance start operation for the car top inspection box. The elevator control cabinet maintenance feedback control circuit is used to generate a second high-level signal in response to a user-triggered maintenance start operation for the elevator control cabinet, and to start the multiple projection devices when the second high-level signal is generated or the car top inspection box maintenance feedback circuit generates the first high-level signal. In this way, during the elevator maintenance process, whether the maintenance start operation is triggered in the car top inspection box or in the elevator control cabinet, a high-level signal can be generated based on the maintenance start operation and the projection device at the elevator door of each floor can be controlled to start based on the generated high-level signal, thereby providing safety warnings at the elevator entrances on each floor through projection, reminding people to pay attention to safety and prevent the occurrence of safety accidents. At the same time, it can also avoid users' dissatisfaction and complaints caused by elevator failures, thereby improving the user experience.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An elevator maintenance projection warning device, characterized in that: include: A plurality of projection devices, each of which is installed in a one-to-one correspondence at the door of a multi-story elevator; a car top inspection box inspection feedback circuit, the car top inspection box inspection feedback circuit being configured to generate a first high level signal in response to a user-triggered inspection start operation for the car top inspection box; An elevator control cabinet maintenance feedback control circuit is respectively connected to the multiple projection devices and the car top inspection box maintenance feedback circuit. The elevator control cabinet maintenance feedback control circuit is used to generate a second high-level signal in response to a user-triggered maintenance start operation for the elevator control cabinet, and to start the multiple projection devices when the second high-level signal is generated or the car top inspection box maintenance feedback circuit generates the first high-level signal.

2. The elevator maintenance projection warning device according to claim 1, characterized in that: The maintenance feedback circuit of the car top maintenance box includes a first processor and a first IO detection circuit. The first processor is connected to the first IO detection circuit, and the first IO detection circuit is connected to the IO interface of the maintenance switch circuit of the car top maintenance box.

3. The elevator maintenance projection warning device according to claim 2, characterized in that: It also includes a first switching switch, and the car top inspection box inspection feedback circuit also includes a first switch detection circuit, and the first switch detection circuit is connected to the first switching switch and the first processor respectively.

4. The elevator maintenance projection warning device according to claim 2, characterized in that: It also includes a first Hall switch, and the maintenance feedback circuit of the car top inspection box also includes a first Hall signal amplification circuit. The first Hall signal amplification circuit is connected to the first processor. The Hall element of the first Hall switch is externally mounted on the maintenance circuit of the car top inspection box, and the output circuit of the first Hall switch is connected to the first Hall signal amplification circuit.

5. The elevator maintenance projection warning device according to claim 2, characterized in that: The car top inspection box inspection feedback circuit also includes a first power supply, and the first power supply is connected to the first processor.

6. The elevator maintenance projection warning device according to claim 1, characterized in that: The elevator control cabinet maintenance feedback control circuit includes a second processor, a second IO detection circuit and a projection interface circuit. The second processor is connected to the second IO detection circuit and the projection interface circuit respectively. The projection interface circuit is connected to the multiple projection devices. The second IO detection circuit is connected to the IO interface of the maintenance switch circuit of the elevator control cabinet.

7. The elevator maintenance projection warning device according to claim 6, characterized in that: It also includes a second switching switch, and the elevator control cabinet maintenance feedback control circuit also includes a second switch detection circuit, and the second switch detection circuit is connected to the second switching switch and the second processor respectively.

8. The elevator maintenance projection warning device according to claim 6, characterized in that: It also includes a second Hall switch, and the elevator control cabinet maintenance feedback control circuit also includes a second Hall signal amplifying circuit. The second Hall signal amplifying circuit is connected to the second processor. The Hall element of the second Hall switch is externally mounted on the maintenance circuit of the elevator control cabinet, and the output circuit of the second Hall switch is connected to the second Hall signal amplifying circuit.

9. The elevator maintenance projection warning device according to claim 6, characterized in that: The elevator control cabinet maintenance feedback control circuit further includes a second power supply connected to the second processor.

10. The elevator maintenance projection warning device according to claim 6, characterized in that: The second processor uses an STM32 chip and its peripheral circuits.

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