A device for monitoring the operating status of an elevator using multisensor fusion

Abstract

A device for monitoring the operating state of an elevator with multisensor fusion, comprising an elevator car (1), characterized in that a main housing (2) is fixedly connected to the top of the elevator car (1), wherein a constant current supply circuit (3) is fixedly connected to the outer surface of the main housing (2) and an intermittent power supply circuit (4) is fixedly connected to the outer surface of the main housing (2); a trip switch (5) is positioned on the outer surface of the main housing (2) corresponding to the intermittent power supply circuit (4), an infrared sensor (6) is fixedly connected to the upper inner surface of the car (1) and the infrared sensor (6) is electrically connected to the main housing (2).

Description

Technical area

[0001] The present application relates to the field of elevator sensor technology, in particular a device for monitoring the operating state of an elevator with multisensor fusion. Technology in the background

[0002] As a central vertical transport device in modern buildings, the operational safety and reliability of elevators are of paramount importance. Conventional condition monitoring and maintenance of elevators primarily relies on regular manual inspections, the scheduled replacement of wear parts, and fault detection mechanisms based on simple sensors (such as level switches and safety contacts).

[0003] With the continuous advancement of intelligence and electrification in elevator systems, numerous active components that generate strong magnetic fields—such as motors, frequency converters, and electromagnetic brakes—are now being integrated on a large scale. At the same time, the sensor networks used for condition monitoring are becoming increasingly dense and complex. While this trend toward technological integration improves the functionality and observability of the system, it also leads to significant electromagnetic compatibility (EMC) issues.Especially when magnetoelectric speed sensors, Hall-effect current sensors, and other magnetically sensitive detection elements are used in close proximity, they are not only susceptible to electromagnetic interference from strong sources such as the host inverter, but also to mutual interference caused by magnetic field coupling or signal line crosstalk between sensors. This can degrade the signal-to-noise ratio of critical status signals such as vibration and current measurements, or even generate noise signals, significantly impairing the accuracy and reliability of fault diagnosis.

[0004] However, in existing scenarios, there are no monitoring devices that can be planned accordingly for different scenarios. Content of the utility model

[0005] The purpose of this application is to address the aforementioned problem of the lack of monitoring devices capable of planning various scenarios accordingly, and thus to provide a device for monitoring the operational status of an elevator using multisensor fusion.

[0006] The technical solution used in this application is as follows: A device for monitoring the operating status of an elevator with multisensor fusion comprises an elevator car, wherein a main housing is rigidly connected to the top of the elevator car and an intermittent power supply circuit is rigidly connected to the outer surface of the main housing. The outer surface of the main housing is rigidly connected to the intermittent power supply circuit. A trip switch is positioned on the main housing corresponding to the outer surface of the intermittent power supply circuit. An infrared sensor is rigidly connected to the upper inner surface of the elevator car, and the infrared sensor is electrically connected to the main housing.

[0007] By applying the aforementioned technical solution, the device is installed at various locations within the elevator car. The main housing integrates several sensors, with one-sided signal connections and synchronized power / signal connections on both sides. The constant current circuit is connected to sensor probes for extended operation. The infrared sensor scans the interior of the elevator car and, upon detecting a person, triggers an intermittent circuit via a switch, thereby activating the internal sensors.

[0008] In a preferred embodiment, the outer surface of the main housing, which is away from the constant current circuit, includes a signal transmission circuit.

[0009] By using the aforementioned technical solution, the signal transmission circuit offers a single signal connection that can be connected to components such as cameras or remote control circuits. This connection facilitates signal transmission and thereby reduces the temperature rise at the power connection.

[0010] In a preferred embodiment, a tilt sensor is fixedly attached to the outer surface of the main housing, its vertical center line being aligned with that of the main housing.

[0011] By implementing the aforementioned technical solution, the position above the center of the elevator car must be reserved for the tilt sensor. This sensor consists of a centrally suspended connecting rod with several symmetrical contact points arranged around its circumference. When the car tilts, the suspended connecting rod touches the peripheral contact points to establish an electrical connection and activate the measurement at the corresponding contact point. When the car is subjected to an angular tilt or sway, the tilt sensor operates most effectively during this swaying motion.

[0012] In a preferred embodiment, a smoke detector is permanently attached to the underside of the main housing, next to a temperature and humidity probe.

[0013] The above-mentioned technical solution electrically connects the smoke detector and the temperature / humidity probe to the intermittent power supply circuit, thus enabling monitoring of the cabin's interior environment.

[0014] In a preferred embodiment, vibration sensors are rigidly connected to the tops of both sides of the cabin, with the vibration sensors being electrically connected to the main housing.

[0015] By using the aforementioned technical solution, the probe of the vibration sensor is positioned internally. After the cabin is shaken, the probe vibrates, thus enabling the measurement and identification of abnormal vibrations on both sides.

[0016] In a preferred embodiment, an optical encoder is fixedly connected to the outer surface of the main housing, while a laser distance sensor is fixedly connected to the inner surface of the lower edge of the cabin.

[0017] Using the aforementioned technical solution, the photoelectric encoder measures the cabin's travel speed from above, while the laser rangefinder attached to the bottom edge amplifies the light-shadow effect. It calculates the cabin's travel speed by detecting the reflected light.

[0018] In a preferred embodiment, a photoelectric sensor is fixedly attached to the central inner surface of the upper edge of the vehicle, while a U-shaped sensor is fixedly attached to the central inner surface of the lower edge of the vehicle.

[0019] By using the above-mentioned technical solution, the photoelectric sensor provides feedback on the closing status of the vehicle door via reflected light patterns from above, while the U-shaped sensor below calculates the opening / closing status of the vehicle door based on changes in the electromagnetic field strength.

[0020] In a preferred embodiment, a temperature and humidity monitoring board is permanently attached to the upper inner surface of the vehicle.

[0021] By applying the aforementioned technical solution, the temperature and humidity monitoring board has additional monitoring probes to extend the monitoring range, resulting in more stable and precise temperature and humidity measurements for the main housing.

[0022] In summary, the beneficial effects of the present application, achieved through the aforementioned technical solutions, can be described as follows: In this application, the device is installed at various locations within the elevator car. The main housing integrates multiple sensors, with one-sided signal connections and synchronized power / signal connections on both sides. The constant current circuit is connected to sensor probes requiring extended operation. The infrared sensor scans the elevator car interior and, upon detecting people, triggers an intermittent circuit via a switch, activating the internal sensors. This integrated approach achieves energy savings across all detection components. When deactivated, the impact of the environment on critical sensors is minimized, thereby improving monitoring quality. Description of the attached drawings Fig. Figure 1 is a schematic front view of the exterior of the device according to this application; Fig. Figure 2 is a schematic representation of the installation of the device in the elevator basket according to this application; Fig. Figure 3 is a perspective top view of the exterior of the main body of the device according to this application; Fig. Figure 4 is a perspective view from below of the exterior of the main body of the device according to this application.

[0023] Description of the markings applied: 1. Elevator basket; 2 Housing of the main body; 3 Constant current supply circuit; 4 Intermittent power supply circuit; 5 trigger switches; 6 Infrared sensor; 7 Tilt sensor; 8 vibration sensors; 9 smoke detectors; 10 Temperature and humidity probes; 11 Photoelectric encoder; 12 laser rangefinders; 13 Photoelectric sensor; 14 U-shaped sensor; 15 Temperature and humidity monitoring board; 16 Signal transmission circuit. Detailed description

[0024] To clarify the objectives, technical solutions, and advantages of the embodiments of the present application, the technical solutions described herein are clearly and completely explained in connection with the embodiments of the present application. It is evident that the described embodiments represent a part of the embodiments of the present application and not their entirety. All other embodiments that could be obtained by those skilled in the art based on the embodiments described herein without any creative work fall within the scope of protection of the present application. embodiment

[0025] With reference to the Fig. 1, Fig. 2, Fig. 3 to Fig. 4 comprises a device for monitoring the operating status of an elevator with multisensor fusion and an elevator car 1. A main housing 2 is fixedly connected to the top of the elevator car 1. A constant current supply circuit 3 is fixedly connected to the outer surface of the main housing 2. An intermittent power supply circuit 4 is fixedly connected to the outer surface of the main housing 2. A trip switch 5 is positioned on the outer surface of the main housing 2 corresponding to the intermittent power supply circuit 4. An infrared sensor 6 is fixedly attached to the upper inner surface of the car 1 and electrically connected to the main housing 2.

[0026] The device is installed at various positions within the elevator car 1. The main housing 2 integrates several sensors and has individual signal connections and synchronized power / signal connections on both sides. The continuous power supply circuit 3 is connected to sensors that operate for extended periods. The infrared sensor 6 scans the interior of the car and, upon detecting a person entering the car, triggers the intermittent power supply circuit 4 via the release switch 5, thereby activating the internal sensors.

[0027] With reference to the Fig. 1, Fig. 2, Fig. 3 to Fig. 4 is the outer surface of the main housing 2 on the side that is away from the constant current supply circuit 3, provided with a signal transmission circuit 16.

[0028] The signal transmission circuit 16 provides a single signal connection that can be connected to components such as cameras or remote control circuits. This connection facilitates signal transmission and thereby reduces the temperature rise at the power supply connection.

[0029] Referring to the Fig. 1-4 a tilt sensor 7 is fixedly attached to the outer surface of the main housing 2, its vertical center line being aligned with that of the main housing 2.

[0030] The position directly above the center of cabin 1 is reserved for the tilt sensor 7. This sensor comprises a centrally suspended connecting rod with several symmetrically arranged circumferential contacts. When the cabin tilts, the suspended connecting rod touches the circumferential contacts to establish the circuit connection and activate the measurement of the corresponding contact. If cabin 1 experiences an angular tilt or oscillations, the corresponding tilt sensor 7 functions most effectively during these oscillations.

[0031] With reference to the Fig. 1, Fig. 2, Fig. 3 to Fig. 4 is a smoke detector 9 permanently attached to the underside of the main housing 2, and a temperature and humidity probe 10 is permanently attached to the underside of the main housing 2.

[0032] The smoke detector 9 and the temperature and humidity probe 10 are electrically connected to the intermittent power supply circuit 4 to monitor the interior environment of cabin 1.

[0033] Referring to the Fig. Vibration sensors 8 are fixedly connected to the top surfaces on both sides of cabin 1. These vibration sensors 8 are electrically connected to the main housing 2.

[0034] The probes of the vibration sensors 8 are positioned internally. After each jolt of the cabin 1, the probes vibrate, enabling corresponding calculations on both sides to determine whether abnormal vibrations have occurred.

[0035] With reference to the Fig. 1, Fig. 2, Fig. 3 to Fig. 4 a photoelectric encoder 11 is fixed to the outer surface of the main housing 2, while a laser distance sensor 12 is fixed to the inner surface of the lower edge of the carriage 1.

[0036] The photoelectric encoder 11 measures the travel speed of the landing gear from above, while the laser distance sensor 12 attached to the lower edge enhances the light-shadow effect and calculates the travel speed of the landing gear by detecting the reflected light.

[0037] With reference to the Fig. 1-4 a photoelectric sensor 13 is fixedly attached to the inner surface in the middle of the upper edge of the cabin 1, while a U-shaped sensor 14 is fixedly attached to the inner surface in the middle of the lower edge of the cabin 1.

[0038] The photoelectric sensor 13 provides feedback on the door locking status of vehicle 1 by detecting light reflection and shadows from above. The U-shaped sensor 14 below calculates and provides the door opening / closing status of vehicle 1 by detecting changes in the electromagnetic field strength.

[0039] With reference to the Fig. 1, Fig. 2, Fig. 3 to Fig. 4 is a temperature and humidity monitoring board 15 firmly connected to the upper inner surface of the carriage 1.

[0040] The temperature and humidity monitoring board 15 includes an extended monitoring range via temperature and humidity probes 10, giving the main housing 2 more stable and precise temperature and humidity measurements.

[0041] The operating principle of the implementation of a multi-sensor fusion elevator operating condition monitoring device described in the present application is as follows: The equipment is installed at various positions within cabin 1. The central position above cabin 1 must be reserved for the tilt sensor 7. The tilt sensor 7 has a centrally suspended connecting rod with several symmetrically arranged peripheral contact points. When tilted, the suspended connecting rod touches the peripheral contacts to close the circuit and activate the measurement of the corresponding contact. If cabin 1 experiences an angular tilt or oscillations, the corresponding tilt sensor 7 operates most effectively during oscillations. The main housing 2 integrates several sensors. On both sides of the main housing 2 are individual signal terminals and synchronized power / signal terminals. The constant current circuit 3 is connected to sensors requiring extended operation.The infrared sensor 6 scans the interior of cabin 1; when it detects the entry of a person, it triggers the intermittent power supply circuit 4 via the trigger switch 5, activating the internal sensors for operation. The signal transmission circuit 16 provides individual signal connections for linking to cameras, remote control circuits, etc., and transmits signal data to reduce the temperature rise on the power supply side. The smoke detector 9 and the temperature / humidity probe 10 are electrically connected to the intermittent power supply circuit 4 to monitor the environment of cabin 1. The probe of the vibration sensor 8 is positioned inside. When cabin 1 is subjected to vibrations, the probe vibrates, allowing corresponding measurements to be taken on both sides to identify abnormal vibrations.The photoelectric sensor 13 located at the top provides feedback on the status of the cabin door 1 via reflected light patterns. The U-shaped sensor 14 located at the bottom detects changes in the electromagnetic field strength to determine the open / closed status of the cabin door 1.

[0042] The foregoing embodiments serve only to illustrate the technical solutions of the present application and are not intended to limit its scope. Although the present application has been described in detail with reference to the aforementioned embodiments, it should be obvious to those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or that certain technical features therein can be replaced by equivalent substitute solutions. Such modifications or substitutions do not result in the corresponding technical solutions deviating from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

[1] A device for monitoring the operating state of an elevator with multisensor fusion, comprising an elevator car (1), characterized by , that a main housing (2) is fixedly connected to the top of the elevator car (1), wherein a constant current supply circuit (3) is fixedly connected to the outer surface of the main housing (2) and an intermittent power supply circuit (4) is fixedly connected to the outer surface of the main housing (2); a trip switch (5) is positioned on the outer surface of the main housing (2) corresponding to the intermittent power supply circuit (4), an infrared sensor (6) is fixedly connected to the upper inner surface of the car (1) and the infrared sensor (6) is electrically connected to the main housing (2). [2] A device for monitoring the operating state of an elevator with multisensor fusion according to claim 1, characterized by, that a signal transmission circuit (16) is provided on the outer surface of the main housing (2) on the side furthest from the constant current supply circuit (3). [3] A device for monitoring the operating state of an elevator with multisensor fusion according to claim 1, characterized by , that a tilt sensor (7) is fixedly connected to the outer surface of the main housing (2), wherein the vertical center line of the tilt sensor (7) coincides with the vertical center line of the main housing (2). [4] A device for monitoring the operating state of an elevator with multisensor fusion according to claim 1, characterized by , that a smoke detector (9) is permanently attached to the underside of the main housing (2) and a temperature and humidity probe (10) is permanently attached to the underside of the main housing (2). [5] A device for monitoring the operating state of an elevator with multisensor fusion according to claim 1, characterized by, that vibration sensors (8) are firmly connected to the upper surfaces on both sides of the elevator car (1) and the vibration sensors (8) are electrically connected to the main housing (2). [6] A device for monitoring the operating state of an elevator with multisensor fusion according to claim 1, characterized by , that a photoelectric encoder (11) is fixedly connected to the outer surface of the main housing (2) and a laser distance sensor (12) is fixedly connected to the inner surface of the lower edge of the elevator car (1). [7] A device for monitoring the operating state of an elevator with multisensor fusion according to claim 1, characterized by , that a photoelectric sensor (13) is fixedly connected to the central inner surface of the upper edge of the elevator car (1) and a U-shaped sensor (14) is fixedly connected to the central inner surface of the lower edge of the elevator car (1). [8] A device for monitoring the operating state of an elevator with multisensor fusion according to claim 1, characterized by , that a temperature and humidity monitoring board (15) is permanently attached to the upper inner surface of the elevator car (1).

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