System and method for monitoring humidity and water immersion of elevator shaft

Abstract

The invention discloses an elevator shaft humidity and water immersion monitoring system and method.The system comprises a signal collecting device, a signal processing device and a safety protection device, the signal collecting device is arranged on an elevator car of an elevator and used for collecting liquid signals of all positions where the elevator car arrives in the moving process in real time; the signal processing device is in signal connection with the signal acquisition device and is used for receiving the liquid signal, analyzing and processing the liquid signal and outputting a processing result; and the safety protection device is in signal connection with the signal processing device and is used for executing an opening or closing function according to the processing result. The humidity and water immersion conditions in the elevator shaft can be monitored in real time, an alarm can be given in time once a dangerous case occurs, a worker is reminded to handle the dangerous case in time, and the elevator running safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of use and management of elevators, and in particular to a system and method for monitoring moisture and water immersion in an elevator shaft. Background Art

[0002] The elevator shaft is a relatively closed space, especially the shaft pit, which will inevitably be affected by moisture or even water, causing damage to elevator-related metal parts, especially electrical parts. Moisture and / or water in the elevator shaft will reduce the insulation performance of the elevator electrical parts, seriously affect the normal operation of the elevator electrical circuit, and even cause a short circuit and cause electric shock. However, the existing solution only relies on maintenance and management personnel to actively discover in daily maintenance and management work. The means are single and there is inevitably the problem of untimely discovery. Therefore, it is impossible to monitor the moisture and / or water in the elevator shaft in real time, and it is impossible to deal with it in time, which poses a safety hazard to the operation of the elevator. Summary of the invention

[0003] In order to overcome the above-mentioned deficiencies in the prior art, the present invention proposes a system and method for monitoring moisture and water in an elevator shaft. The monitoring system and method are based on the principle of ultrasonic liquid level detection, and can promptly detect moisture and / or water in the elevator shaft and take effective measures in time to avoid accidents, thereby solving the technical problem that the existing means cannot promptly detect and deal with water immersion, thereby posing a safety hazard to the operation of the elevator.

[0004] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: In a first aspect, the present invention provides an elevator shaft moisture and water immersion monitoring system, comprising: A signal acquisition device is provided on the elevator car and is used to collect in real time liquid signals at various positions reached by the car during movement; A signal processing device, which is signal-connected to the signal acquisition device, and is used to receive the liquid signal, analyze and process the liquid signal, and output a processing result; A safety protection device is connected to the signal processing device by signal, and is used to execute an opening or closing function according to the processing result.

[0005] In some embodiments, the signal collection device includes at least one ultrasonic sensor, and the ultrasonic sensor is arranged at the bottom, top and / or both sides of the car.

[0006] In some embodiments, the signal processing device is arranged in the elevator machine room or in the elevator remote management center via a wireless connection.

[0007] In some embodiments, the signal processing device includes a receiving module, a storage module, a processing module and an output module. The receiving module is used to receive the liquid signal collected by any of the ultrasonic sensors, the storage module is used to store the electrical signal threshold, the processing module is used to process the liquid signal, and the output module is used to output the processing results.

[0008] In some embodiments, the safety protection device includes an elevator door protection unit and an alarm unit. The elevator door protection unit is used to trigger the elevator car door and floor door to remain open according to the processing result to interrupt the elevator operation, and the alarm unit is used to send a warning signal according to the processing result.

[0009] In some embodiments, the alarm unit includes a warning light and a warning bell, and the warning light and the warning bell are arranged in the car and are signal-connected to the signal processing device.

[0010] In some embodiments, the alarm unit further comprises a wireless communication phone, and the wireless communication phone is communicatively connected to the elevator remote management center.

[0011] In another aspect, the present invention provides a method for monitoring moisture and water in an elevator shaft, the monitoring method comprising the following steps: Collect liquid signals at each position reached by the elevator car during movement; Receiving the collected liquid signal, analyzing and processing the liquid signal, and outputting the processing result; Determine whether to issue an alarm and whether to initiate safety protection measures based on the processing results.

[0012] In some embodiments, the collection of liquid signals at various positions reached by the elevator car during movement is specifically performed by collecting liquid signals through at least one ultrasonic sensor arranged at the bottom, top and / or both sides of the car.

[0013] In some embodiments, the receiving of the collected liquid signal, analyzing and processing the liquid signal, and outputting the processing result specifically include the following sub-steps: Receiving a liquid signal collected by any of the ultrasonic sensors; Comparing the liquid signal with a pre-stored electrical signal threshold; Output processing results.

[0014] Compared with the prior art, the present invention provides a system and method for monitoring moisture and flooding in the elevator shaft, which collects liquid signals at various positions reached by the car during movement through a signal acquisition device, and transmits the liquid signals to a signal processing device, which analyzes and processes the liquid signals and outputs the processing results. Finally, the safety protection device will perform an opening or closing function according to the processing results to remind the management personnel to stop the elevator operation at the same time, and continue to operate after the safety hazards are eliminated. Therefore, the present invention realizes real-time monitoring of moisture and flooding in the elevator shaft, and measures can be taken in time once a dangerous situation is found, thereby improving the safety of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural block diagram of the monitoring system of the present invention; Figure 2 is a structural block diagram of the signal processing device of the present invention; Figure 3 It is a structural block diagram of the alarm unit of the present invention; Figure 4 It is a schematic diagram of the position of the monitoring system of the present invention arranged on the elevator; Figure 5 is a step diagram of the monitoring method of the present invention; Figure 6 It is a control flow chart of the monitoring method of the present invention.

[0016] The following are the descriptions of the reference numerals: 100. Signal acquisition device; 200, signal processing device, 210, receiving module, 220, storage module, 230, processing module, 240, output module; 300, safety protection device, 310, warning light, 320, warning bell, 330, wireless communication phone; 400. Car. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] In view of the technical problem that currently only maintenance and management personnel can actively discover whether the elevator shaft is damp or flooded during daily inspections, but cannot monitor in real time and cannot deal with the flooding in time, which poses a safety hazard to the elevator, the present invention provides an elevator shaft moisture and flooding monitoring system and method.

[0019] It uses the characteristics of ultrasound with small amplitude, high acceleration, and strong penetration ability of directional linear propagation, which is suitable for detecting the propagation mode of longitudinal waves generated by liquid or air medium. When the ultrasound emitted by the system propagates to different interfaces of liquid and air medium, obvious reflection and transmission will occur. When the reflected energy reaches the predetermined threshold, the electric-acoustic-electric conversion device will be activated, sending a warning signal to the elevator's safety protection device, triggering an auditory / visual warning signal, and taking measures such as interrupting the normal service of the elevator to avoid safety accidents.

[0020] like Figures 1 to 4 As shown, on one hand, the present invention provides an elevator shaft moisture and water immersion monitoring system, including a signal acquisition device 100, a signal processing device 200 and a safety protection device 300. The signal acquisition device 100 is arranged on the elevator car 400 and moves with the car 400, and is used for real-time acquisition of liquid signals at various positions reached by the car 400 during the movement; the signal processing device 200 is signal-connected to the signal acquisition device 100, and is used for receiving the liquid signal and analyzing and processing the liquid signal, and outputting the processing result; the safety protection device 300 is signal-connected to the signal processing device 200, and is used for executing an opening or closing function according to the processing result.

[0021] In this way, the present invention can collect liquid signals generated by moisture or water immersion through the signal acquisition device 100, and transmit the liquid signals to the signal processing device 200. The signal processing device 200 analyzes and processes the liquid signals and outputs the results to the safety protection device 300 to determine whether the safety protection device 300 is turned on to warn the staff to handle the situation and prevent safety accidents. Therefore, compared with the prior art, the technical solution of the present invention can monitor the flooding of the elevator in real time, and can handle the dangerous situation in time once it occurs, thereby improving the safety of the elevator operation.

[0022] In one embodiment, the signal acquisition device 100 includes at least one ultrasonic sensor, and the ultrasonic sensor is disposed at the bottom, top and / or both sides of the car 400 .

[0023] In this embodiment, the installation position of the ultrasonic sensor is not limited to the appropriate position on the bottom, top and two side columns of the car 400. Its function is that when the car 400 moves, these ultrasonic sensors installed on the car 400 will emit ultrasonic signals. When emitted to the liquid or water in the elevator shaft, the ultrasonic signal can receive the echo from the surface of the liquid or water, and generate a reflected sound signal at the interface between the liquid or water and the gas. The input and output of the ultrasonic sensor are both electrical signals, and the ultrasonic sensor is not limited to using electrical analog signals or digital signals.

[0024] In one embodiment, the signal processing device 200 is arranged in the elevator machine room or in the elevator remote management center via a wireless connection.

[0025] In one embodiment, if Figure 2 As shown, the signal processing device 200 includes a receiving module 210, a storage module 220, a processing module 230 and an output module 240. The receiving module 210 is used to receive a liquid signal collected by any of the ultrasonic sensors, the storage module 220 is used to store the electrical signal threshold, the processing module 230 is used to process the liquid signal, and the output module 240 is used to output the processing result.

[0026] In this embodiment, the signal processing device 200 is an electrical device containing an electrical switch, which can process the output signal of the ultrasonic sensor: determine the threshold of the switch action by adjusting the electrical quantity of the signal and send a signal to the elevator's safety protection device 300 when the threshold reaches the set value.

[0027] In one embodiment, the safety protection device 300 includes an elevator door protection unit and an alarm unit. The elevator door protection unit is used to trigger the elevator car door and floor door to remain open to interrupt the elevator operation according to the processing result, and the alarm unit is used to send a warning signal according to the processing result.

[0028] In one embodiment, if Figure 3 As shown, the alarm unit includes a warning light 310 and a warning bell 320 , and the warning light 310 and the warning bell 320 are arranged in the elevator car 400 and are connected to the signal processing device 200 by signal.

[0029] In one embodiment, the alarm unit further includes a wireless communication phone 330, and the wireless communication phone 330 is communicatively connected to the elevator remote management center.

[0030] In this embodiment, the elevator door protection unit is a device defined in Section 4.12 of GB / T 7024, and the elevator door protection unit is triggered by the output signal of the signal processing device 200; when receiving the signal from the signal processing device, the elevator door protection unit is turned on, triggering the protection function, the car door and the floor door remain in the open state, and the elevator interrupts normal service; the warning light 310 and the warning bell 320 are arranged in the elevator shaft or inside the elevator car 400, and are triggered by the output signal of the signal processing device 200. When receiving the signal from the signal processing device 200, the warning light 310 and the warning bell 320 send out auditory and visual warning signals to remind relevant personnel that there are safety hazards in the elevator; keep in touch with the outside world through the wireless communication phone 330, waiting for the safety hazard problem to be eliminated. When the safety hazard problem is solved, the ultrasonic sensor cannot detect the echo signal, the system remains in the initialization state, and the elevator resumes normal service.

[0031] On the other hand, Figure 5 As shown, the present invention provides a method for monitoring moisture and water in an elevator shaft, comprising the following steps: Step 1, collecting liquid signals at various positions reached by the elevator car during movement; Step 2, receiving the collected liquid signal, analyzing and processing the liquid signal, and outputting the processing result; Step 3: Determine whether to issue an alarm and whether to activate safety protection measures based on the processing result.

[0032] In one of the embodiments, the collection of liquid signals at various positions reached by the elevator car during movement is specifically performed by collecting liquid signals through at least one ultrasonic sensor arranged at the bottom, top and / or both sides of the car.

[0033] In one embodiment, the receiving of the collected liquid signal, analyzing and processing the liquid signal, and outputting the processing result specifically include the following sub-steps: Receiving a liquid signal collected by any of the ultrasonic sensors; Comparing the liquid signal with a pre-stored electrical signal threshold; Output processing results.

[0034] like Figure 6 As shown, the working principle of the elevator shaft moisture and flooding monitoring system provided by the present invention is: First, n groups of ultrasonic sensors are installed at appropriate positions on the bottom, top or both sides of the car 400, and then the signal output terminals of the ultrasonic sensors are connected to the signal processing device 200. In this way, when any one of the ultrasonic sensors detects liquid and / or water immersion, an electrical signal is sent to the signal processing device 200, and the signal processing device 200 determines whether the value of the signal reaches the designed threshold: if it is judged as no, the elevator maintains normal service; if it is judged as yes, the following device actions are triggered at the same time: ① The elevator door protection unit is turned on to keep the elevator in the open state, and the elevator interrupts normal service; ② The warning light 310 and the warning bell 320 are turned on to send out a warning signal; ③ The wireless communication phone 330 of the elevator is connected to keep in touch with the outside world and wait for the safety hazard to be eliminated. When the safety hazard problem is solved, the ultrasonic sensor cannot detect the echo signal, the system remains in the initialization state, and the elevator resumes normal service.

[0035] In summary, the elevator shaft moisture and water immersion monitoring device and method provided by the present invention have the following beneficial effects: 1. Ultrasonic sensing is used to detect water media in the elevator shaft. Compared with other detection methods, it has the great advantages of simple structure, safety and reliability, and low manufacturing, installation and maintenance costs; 2. Ultrasonic sensor devices can use analog or digital quantities, the technology is mature, easy to purchase and match, and the cooperative relationship is good; 3. It can timely solve the post-event disposal method of elevator shaft flooding that relies on manual inspections, and can automatically discover problems, which is of positive significance for timely avoiding and eliminating safety hazards; 4. It solves the hidden dangers of failure of elevator electrical components, electrical short circuit, component corrosion, etc. that may be caused by water immersion and / or moisture in the elevator shaft, ensuring the safe use of the elevator; 5. It can start the door protection function, alarm function and remote communication rescue function at the same time as the signal is triggered, realize the synchronous linkage of safety protection and information transmission, and quickly restore the normal operation of the elevator to ensure the safety of passengers and property, with good social effects.

[0036] It can be understood that the technical solution of the present invention can be configured when a new elevator is manufactured, is suitable for retrofitting to existing elevators, and can also be used on-site as a separate monitoring device, having the beneficial effects of monitoring and early warning.

[0037] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An elevator shaft moisture and flooding monitoring system, characterized in that: include: A signal acquisition device is provided on the elevator car and is used to collect in real time liquid signals at various positions reached by the car during movement; A signal processing device, which is signal-connected to the signal acquisition device, and is used to receive the liquid signal, analyze and process the liquid signal, and output a processing result; A safety protection device is connected to the signal processing device by signal, and is used to execute an opening or closing function according to the processing result.

2. The elevator shaft moisture and flooding monitoring system according to claim 1 is characterized in that: The signal collection device includes at least one ultrasonic sensor, and the ultrasonic sensor is arranged at the bottom, top and / or both sides of the car.

3. The elevator shaft moisture and flooding monitoring system according to claim 2 is characterized in that: The signal processing device is arranged in the elevator machine room or in the elevator remote management center through a wireless connection.

4. The elevator shaft moisture and flooding monitoring system according to claim 3 is characterized in that: The signal processing device includes a receiving module, a storage module, a processing module and an output module. The receiving module is used to receive the liquid signal collected by any one of the ultrasonic sensors, the storage module is used to store the electrical signal threshold, the processing module is used to process the liquid signal, and the output module is used to output the processing result.

5. The elevator shaft moisture and flooding monitoring system according to claim 3 is characterized in that: The safety protection device includes an elevator door protection unit and an alarm unit. The elevator door protection unit is used to trigger the elevator car door and floor door to remain open to interrupt the elevator operation according to the processing result, and the alarm unit is used to send a warning signal according to the processing result.

6. The elevator shaft moisture and flooding monitoring system according to claim 5 is characterized in that: The alarm unit comprises a warning light and a warning bell, wherein the warning light and the warning bell are arranged in the car and are connected to the signal processing device by signals.

7. The elevator shaft moisture and flooding monitoring system according to claim 6 is characterized in that: The alarm unit also includes a wireless communication phone, and the wireless communication phone is communicatively connected with the elevator remote management center.

8. A monitoring method for an elevator shaft moisture and water immersion monitoring system according to any one of claims 1 to 7, characterized in that: The monitoring method comprises the following steps: Collect liquid signals at each position reached by the elevator car during movement; Receiving the collected liquid signal, analyzing and processing the liquid signal, and outputting the processing result; Determine whether to issue an alarm and whether to initiate safety protection measures based on the processing results.

9. The elevator shaft moisture and water immersion monitoring method according to claim 8, characterized in that: The collection of liquid signals at various positions reached by the elevator car during movement is specifically carried out by collecting liquid signals through at least one ultrasonic sensor arranged at the bottom, top and / or both sides of the car.

10. The elevator shaft moisture and water immersion monitoring method according to claim 9, characterized in that: The receiving the collected liquid signal, analyzing and processing the liquid signal, and outputting the processing result specifically comprises the following sub-steps: Receiving a liquid signal collected by any of the ultrasonic sensors; Comparing the liquid signal with a pre-stored electrical signal threshold; Output processing results.

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