Elevator fault detection system and elevator device

Abstract

The embodiment of the invention discloses an elevator fault detection system and an elevator device. The elevator fault detection system comprises a plurality of first detection circuits, a signal processing circuit and a controller. The plurality of first detection circuits are in one-to-one correspondence with a plurality of floors, and the first detection circuits acquire first environment information of the corresponding floors; the signal processing circuit is connected with the plurality of first detection circuits; the controller is connected with the signal processing circuit and the elevator, the controller receives the multiple pieces of first environment information processed by the signal processing circuit and determines the state information of the floors based on the multiple pieces of first environment information, and when the controller determines that the corresponding floors are in the fault state, the controller is further used for controlling the elevator to stop nearby safely. According to the elevator fault detection system, the state information of different floors can be monitored in real time, and the floors in the fault state can be known in time so as to correspondingly control the elevator to stop nearby safely, so that people in the elevator can evacuate from the elevator and dangerous places in time, and certain safety is improved.

Description

Technical Field

[0001] The present application relates to the technical field of elevators, and in particular to an elevator fault detection system and an elevator device. Background Art

[0002] Elevators are widely used in residential buildings, shopping malls and other places as convenient lifting tools. When fire or gas leakage occurs in these places, the elevators in related technologies cannot obtain the dangerous information of the place and cannot stop in time, resulting in people in the car being unable to leave the elevator and dangerous places in time, posing certain safety hazards. Summary of the invention

[0003] The embodiments of the present application provide an elevator fault detection system and an elevator device, which are intended to improve the problem that when a fire or gas leakage occurs in the elevator location, people in the elevator are unable to leave the elevator and dangerous places in time, posing certain safety hazards.

[0004] In the first aspect, an embodiment of the present application provides an elevator fault detection system, comprising multiple first detection circuits, a signal processing circuit and a controller; the multiple first detection circuits correspond to multiple floors one by one, respectively, and each first detection circuit is used to obtain first environmental information of the corresponding floor, and the first environmental information includes at least gas information; the signal processing circuit is connected to the multiple first detection circuits, and is used to receive the first environmental information from the multiple first detection circuits; the controller is connected to the signal processing circuit and the elevator, and the controller is used to receive the multiple first environmental information processed by the signal processing circuit, and determine the status information of the floor based on the multiple first environmental information, the status information includes a fault state and a normal state, and when the controller determines that the corresponding floor is in a fault state based on one of the first environmental information, the controller is also used to control the elevator to stop safely nearby.

[0005] Based on the elevator fault detection system provided by the present application, the controller can monitor the status information of different floors in real time through multiple first environmental information, and promptly know the floors in the fault state to switch the operation mode of the elevator accordingly, so that the elevator can stop safely nearby with high timeliness, so that the personnel in the elevator can evacuate the elevator and dangerous places in time, thereby improving a certain degree of safety. Secondly, the multiple first environmental information obtained by the multiple first detection circuits can be centrally managed and numbered through a signal processing circuit. After the signal processing circuit numbers the multiple first environmental information, all the first environmental information is transmitted to the controller in a unified format, which is convenient for the subsequent data analysis and fault diagnosis of the controller. In addition, the multiple first detection circuits are electrically connected to the signal processing circuit, and do not need to be connected to the controller, which reduces the hardware complexity and wiring requirements and saves the port resources of the controller.

[0006] In some exemplary embodiments, the elevator fault detection system also includes a switching circuit; the first end of the switching circuit is connected to the power input end of the elevator, the second end of the switching circuit is connected to the power supply, and the controlled end of the switching circuit is connected to the controller; wherein, when the controller controls the elevator to stop safely nearby, the controller is also used to control the switching circuit to disconnect.

[0007] In the above technical solution, when the elevator is in the emergency avoidance operation mode, the controller is also used to control the switch circuit to disconnect, so that the power supply is disconnected from the branch where the power input terminal of the elevator is located, so as to realize the power-off protection of the elevator, thereby extending the service life of the elevator. In addition, the elevator is equipped with complex electrical and electronic equipment. After the elevator is powered off, the phenomenon of heating of the electrical and electronic equipment inside the elevator due to current overload can be reduced, and the risk of fire caused by electrical failure in the elevator can be avoided, so as to further improve safety.

[0008] In some exemplary embodiments, the switch circuit is any one of a relay switch, a triode, or a metal oxide semiconductor field effect transistor.

[0009] In some exemplary embodiments, the elevator fault detection system also includes a second detection circuit; the second detection circuit is connected to the controller, the second detection circuit is used to obtain second environmental information of the elevator and send it to the controller, the controller is also used to determine the status information of the elevator based on the second environmental information, when the controller determines that the elevator is in a fault state based on the second environmental information, the controller is used to control the elevator to stop safely nearby; wherein the second environmental information includes at least fire source information, smoke information and gas information.

[0010] In the above technical solution, the controller can also monitor the status information inside the elevator in real time based on the second environmental information, and promptly know the elevator in a faulty state to switch the elevator's operating mode accordingly, so that the elevator can stop safely nearby or keep the door open, with high timeliness, so that people in the elevator can evacuate the elevator in time, avoiding the problem of people trapped inside the elevator inhaling too much smoke, so as to further improve safety.

[0011] In some exemplary embodiments, the second detection circuit includes a fire source detection sensor, a smoke detection sensor and a gas detection sensor; the fire source detection sensor is connected to the controller, and the fire source detection sensor is used to obtain fire source information and send it to the controller; the smoke detection sensor is connected to the controller, and the smoke detection sensor is used to obtain smoke information and send it to the controller; the gas detection sensor is connected to the controller, and the gas detection sensor is used to obtain gas information and send it to the controller.

[0012] In the above technical scheme, the fire source detection sensor, smoke detection sensor and gas detection sensor can respectively realize accurate detection of fire source information, smoke information and gas information to ensure the detection accuracy and detection reliability of the second detection circuit, thereby ensuring the reliability of the controller in judging the status information of the elevator based on the second environmental information.

[0013] In some exemplary embodiments, the elevator fault detection system also includes an alarm circuit; the alarm circuit is connected to the controller, and when the controller determines that the elevator is in a fault state based on the second environmental information, the controller is also used to control the alarm circuit to issue an alarm prompt.

[0014] In some exemplary embodiments, the elevator is provided with a frequency converter, and the elevator fault detection system also includes a third detection circuit; the third detection circuit is connected to the controller and the frequency converter, and the third detection circuit is used to obtain the current temperature of the frequency converter and send it to the controller, and the controller is also used to control the elevator to stop safely nearby when the current temperature is greater than the temperature threshold.

[0015] In some exemplary embodiments, the elevator fault detection system also includes a ventilation circuit; the ventilation circuit is connected to the controller and the external ventilation device, and when the current temperature is higher than the temperature threshold, the controller is also used to control the ventilation circuit to drive the external ventilation device to work.

[0016] In a second aspect, an embodiment of the present application provides an elevator device, including an elevator and an elevator fault detection system as described in any optional manner of the first aspect, wherein the elevator fault detection system is connected to the elevator.

[0017] In some exemplary embodiments, the elevator device further includes a display screen and a display system; the display screen is arranged inside the elevator; and the display system is connected to the display screen and the elevator fault detection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the module structure of an elevator device in one embodiment of the present application;

[0020] Figure 2 This is a schematic diagram of the module structure of an elevator device in another embodiment of the present application;

[0021] Figure 3 This is a schematic diagram of the module structure of an elevator device in another embodiment of the present application;

[0022] Figure 4 This is a schematic diagram of the module structure of an elevator device in another embodiment of the present application;

[0023] Figure 5 This is a schematic diagram of the module structure of an elevator device in another embodiment of the present application;

[0024] Figure 6 This is a schematic diagram of the module structure of an elevator device in another embodiment of the present application;

[0025] Figure 7 This is a schematic diagram of the module structure of an elevator device in another embodiment of the present application;

[0026] Figure 8 This is a schematic diagram of the module structure of an elevator device in another embodiment of the present application;

[0027] Fig. 9 This is a schematic diagram of the module structure of an elevator device in another embodiment of the present application;

[0028] Fig.10 This is a schematic diagram of the module structure of an elevator device in another embodiment of the present application.

[0029] Description of reference numerals:

[0030] 1. Elevator; 11. Frequency converter; 2. Elevator fault detection system; 21. First detection circuit; 22. Signal processing circuit; 23. Controller; 24. Second detection circuit; 25. Switch circuit; 26. Alarm circuit; 27. Third detection circuit; 28. Ventilation circuit; 3. Power supply; 4. External ventilation device; 5. Display screen; 6. Display system;

[0031] K1, the first switch; K2, the second switch; K3, the third switch; K4, the fourth switch; K5, the fifth switch; K6, the sixth switch. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application 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 application and are not used to limit the present application.

[0033] Elevators are widely used in places such as residential buildings and shopping malls as convenient lifting tools. When a fire or gas leak occurs at a certain location or floor in these places, the elevators in the relevant technology cannot obtain the dangerous information of the place in time, that is, the elevator cannot obtain the abnormal situation in time and cannot stop in time, resulting in the inability of people in the car to leave the elevator and dangerous places in time, which poses certain safety hazards. Secondly, there may be abnormalities inside the elevator. For example, when the battery of the electric vehicle inside the elevator burns, a lot of smoke will be generated inside the elevator, and even a fire may occur in serious cases. At this time, the people in the car cannot get out of the elevator in time. The elevator will only open the door after it reaches the corresponding floor according to the preset program, resulting in the trapped people in the car having inhaled too much smoke, which poses a great safety hazard.

[0034] To this end, an embodiment of the present application provides an elevator fault detection system and an elevator device. The elevator fault detection system can monitor the status information of different floors in real time, and promptly know the floor in a faulty state to control the elevator to stop safely nearby, so that people in the elevator can evacuate the elevator and dangerous places in time, thereby improving a certain degree of safety.

[0035] The elevator fault detection system and elevator device provided in the present application are exemplarily introduced below in conjunction with the accompanying drawings.

[0036] The present application embodiment provides an elevator device, such as Figure 1 As shown, the elevator device includes an elevator 1 and an elevator fault detection system 2, and the elevator 1 and the elevator fault detection system 2 are connected, wherein the elevator 1 is used to carry people or objects for lifting and lowering, and the elevator fault detection system 2 can perform fault detection on the place where the elevator 1 is located. When a fault is detected in the place where the elevator 1 is located, the elevator 1 can be controlled to stop safely nearby, so that people in the car can evacuate the elevator, that is, the dangerous place, in time, thereby improving safety.

[0037] In one example, if Figure 2 As shown, the elevator fault detection system 2 includes multiple first detection circuits 21, a signal processing circuit 22 and a controller 23. The multiple first detection circuits 21 correspond one-to-one to multiple floors respectively, the signal processing circuit 22 is connected to the multiple first detection circuits 21, and the controller 23 is connected to the signal processing circuit 22 and the elevator 1.

[0038] Among them, the first environmental information obtained by the first detection circuit 21 includes at least gas information (such as toxic gas, combustible gas, etc.), and it is worth noting that the specific application scenario of the first detection circuit 21 can be set according to actual needs. For example, assuming that the elevator 1 is applied to an office building or a residential building, the office building and the residential building have a large number of floors and a small floor area, then a first detection circuit 21 can be set for each floor, and the first environmental information corresponding to different floors is detected by different first detection circuits 21. For another example, assuming that the elevator 1 is applied to a shopping mall, the shopping mall has a small number of floors and a large floor area, then multiple first detection circuits 21 can be set for each floor, which are used to detect that different first detection circuits 21 on the same floor are located at different positions on the same floor, so as to realize the detection of different areas on the same floor, and the first environmental information corresponding to different areas on the same floor is detected by different first detection circuits 21 on the same floor. When the elevator 1 is applied to special scenes (such as hospitals, underground mines, etc.), the first detection circuit 21 can be arranged accordingly based on the special scene to cover the entire scene, and this application does not make specific restrictions.

[0039] The elevator fault detection system 2 provided in the present application is exemplarily described below by taking the example of setting a first detection circuit 21 corresponding to each floor.

[0040] The multiple first detection circuits 21 correspond to the multiple floors one by one, and each first detection circuit 21 is used to obtain the first environment information of the corresponding floor. The signal processing circuit 22 will receive the first environment information from the multiple first detection circuits 21, and the signal processing circuit 22 will summarize and number the first environment information. For example, assuming that the number of floors is ten, the number of corresponding first detection circuits 21 is ten. The ten first detection circuits 21 respectively obtain the first environment information of the ten floors and send it to the signal processing circuit 22. After the signal processing circuit 22 receives the ten first environment information from the ten first detection circuits 21, it will number the ten first environment information. For example, the first environment information output by the first detection circuit 21 corresponding to the first floor is 1, and the first environment information output by the first detection circuit 21 corresponding to the second floor is 2, and so on.

[0041] The signal processing circuit 22 aggregates and numbers the received multiple first environmental signals, and then sends them to the controller 23. The controller 23 receives the multiple first environmental information processed by the signal processing circuit 22, and determines the status information of multiple floors based on the multiple first environmental information. The status information of the floor includes a fault state and a normal state. In the normal state, the multiple first environmental information obtained by the multiple first detection circuits 21 are all normal information, that is, there is no flammable gas, toxic gas, etc. in the multiple first environmental information; in the fault state, some of the multiple first environmental information obtained by the multiple first detection circuits 21 are abnormal information, that is, there is flammable gas, toxic gas, etc. in some of the first environmental information. When the controller 23 detects that one of the first environmental information is abnormal information containing flammable gas, toxic gas, etc., the signal processing circuit 22 has numbered the multiple first environmental signals. Therefore, the controller 23 can determine the corresponding floor based on the first environmental information, and the floor is currently in a fault state. At this time, the controller 23 will control the elevator 1 to stop safely nearby, that is, at this time, the controller 23 switches the elevator 1 from the normal operation mode to the emergency avoidance operation mode. It can be understood that the nearest safe stop means that the elevator 1 stops at the nearest floor without any faults, so as to avoid the elevator 1 running to the dangerous floor. After the elevator 1 stops safely nearby, the controller 23 will control the elevator 1 to open the door, so that the people in the elevator 1 can evacuate the elevator 1 and the dangerous place in time, thereby improving a certain degree of safety. In this way, when the controller 23 detects that there is a flammable, explosive or toxic leakage on the floor, it will control the elevator 1 not to stop at the abnormal floor to release the car occupants, but to stop at the nearest safe floor to release the car occupants.

[0042] In this example, after the people in elevator 1 evacuate elevator 1 in time, if the rescue personnel need to take elevator 1 to the dangerous floor for rescue at this time, the working mode of elevator 1 can be switched through the rescue button in the duty room. The rescue button is connected to the controller 23. When the user presses the rescue button in the duty room, the controller 23 will receive a release signal and control the elevator 1 to exit the emergency avoidance operation mode, so that the elevator 1 enters the normal driving mode. At this time, the rescue personnel can select the corresponding dangerous floor in the elevator 1 to carry out rescue. It is worth noting that when the controller 23 detects an emergency elevator signal at this time, the controller 23 will control the elevator 1 to respond first and stop at the current floor for the person seeking help to take.

[0043] In this way, the controller 23 in this application can monitor the status information of different floors in real time through multiple first environmental information, and promptly know the floor in a faulty state to switch the operation mode of the elevator 1 accordingly, so that the elevator 1 can safely stop nearby with high timeliness, so that the personnel in the elevator 1 can evacuate the elevator 1 and dangerous places in time, thereby improving a certain degree of safety. Secondly, the multiple first environmental information obtained by the multiple first detection circuits 21 can be centrally managed and numbered through a signal processing circuit 22. After the signal processing circuit 22 numbers the multiple first environmental information, all the first environmental information is transmitted to the controller 23 in a unified format, which is convenient for the subsequent data analysis and fault diagnosis of the controller 23. In addition, the multiple first detection circuits 21 are electrically connected to the signal processing circuit 22, and do not need to be connected to the controller 23, which reduces the hardware complexity and wiring requirements and saves the port resources of the controller 23.

[0044] Optionally, the controller 23 can reuse the mainboard inside the elevator 1, such as a microprocessor (Advanced RISC Machine CPU, ARM CPU). The ARM CPU has high performance, low power consumption and low cost.

[0045] In daily use, the elevator 1 may also have internal abnormalities. For example, after the user pushes the battery car into the elevator 1, the battery car battery may burn during the lifting process of the elevator 1. In order to further improve the safety and reliability of the elevator 1 provided by this application. In one example, Figure 3 As shown, the elevator fault detection system 2 also includes a second detection circuit 24, which is connected to the controller 23. The second detection circuit 24 is used to obtain the second environmental information of the elevator 1 and send it to the controller 23, wherein the second environmental information at least includes fire source information, smoke information and gas information. The controller 23 can also determine the state information of the elevator 1 based on the second environmental information. At this time, the state information of the elevator 1 also includes a normal state and a fault state. In the normal state, the second environmental information obtained by the second detection circuit 24 is all normal information, that is, there is no fire source information (for example, there is a high temperature flame locally), smoke information, combustible gas, toxic gas, etc. in the second environmental information; in the fault state, part of the second environmental information obtained by the second detection circuit 24 is abnormal information, that is, there may be fire source information, smoke information, combustible gas, toxic gas, etc. in the second environmental information. When the controller 23 detects that the second environmental information contains any one of fire source information, smoke information, flammable gas, and toxic gas, the controller 23 determines that the elevator 1 is in a fault state based on the second environmental information. The controller 23 controls the elevator 1 to stop safely nearby and controls the door of the elevator 1 to open, so that the people in the elevator 1 can evacuate the elevator 1 in time, thereby improving a certain safety.

[0046] It is worth noting that when the controller 23 determines that the elevator 1 is in a fault state based on the second environmental information, the controller 23 will perform corresponding control based on the current working state of the elevator 1. For example, when the elevator 1 is at the leveling position at this time, the controller 23 will control the elevator 1 to remain stopped and control the car door to remain open, so that the people in the elevator 1 can evacuate the elevator 1 in time; for another example, when the elevator 1 is in the running process at this time, the controller 23 will cancel the elevator 1's internal call floor signal, and will not respond to the external call signal. The controller 23 controls the elevator 1 to stop safely nearby, and controls the elevator 1's car door to open, so that the people in the elevator 1 can evacuate the elevator 1 in time.

[0047] In this way, the controller 23 can also monitor the status information inside the elevator 1 in real time based on the second environmental information, and promptly know that the elevator 1 is in a faulty state to switch the operation mode of the elevator 1 accordingly, so that the elevator 1 can safely stop nearby or keep the door open, with high timeliness, so that the people in the elevator 1 can evacuate the elevator 1 in time, avoiding the problem of people trapped inside the elevator 1 inhaling too much smoke, so as to further improve safety. By setting the second detection circuit 24, the problem that when an emergency occurs in the elevator 1 car in the related art, the elevator 1 continues to travel to the destination floor and cannot stop nearby safely in time to release people can be solved.

[0048] In order to enable the second detection circuit 24 to accurately detect the fire source information, smoke information and gas information, in one example, Figure 4 As shown, the second detection circuit 24 includes a fire source detection sensor 241, a smoke detection sensor 242, and a gas detection sensor 243. The fire source detection sensor 241 is connected to the controller 23, and the fire source detection sensor 241 is used to obtain fire source information and send it to the controller 23. The smoke detection sensor 242 is connected to the controller 23, and the smoke detection sensor 242 is used to obtain smoke information and send it to the controller 23. The gas detection sensor 243 is connected to the controller 23, and the gas detection sensor 243 is used to obtain gas information and send it to the controller 23. In this way, the fire source detection sensor 241, the smoke detection sensor 242, and the gas detection sensor 243 can respectively realize accurate detection of fire source information, smoke information, and gas information, so as to ensure the detection accuracy and detection reliability of the second detection circuit 24, thereby ensuring the reliability of the controller 23 judging the state information of the elevator 1 based on the second environmental information.

[0049] Optionally, a camera may be provided inside the elevator 1, and the camera is configured to be used in conjunction with the fire source detection sensor 241, the smoke detection sensor 242, and the gas detection sensor 243, that is, the camera can perform real-time monitoring and detection inside the elevator 1. The surveillance camera inside the elevator 1 may also be reused, and this application does not impose any specific restrictions on this.

[0050] After the controller 23 controls the elevator 1 to stop safely nearby, the controller 23 can also control the elevator 1 to automatically cut off power for protection. In one example, Figure 5 As shown, the elevator fault detection system 2 also includes a switch circuit 25, a first end of the switch circuit 25 is connected to the power input end of the elevator 1, a second end of the switch circuit 25 is connected to the power supply 3, and a controlled end of the switch circuit 25 is connected to the controller 23.

[0051] In this example, when the controller 23 controls the elevator 1 to safely stop nearby based on the first environmental information or based on the second environmental information, that is, when the elevator 1 is in the emergency avoidance operation mode, the controller 23 is also used to control the switch circuit 25 to disconnect, so that the power supply 3 is disconnected from the branch where the power input terminal of the elevator 1 is located, so as to achieve power-off protection of the elevator 1, thereby extending the service life of the elevator 1. In addition, the elevator 1 is equipped with complex electrical and electronic equipment. After the elevator 1 is powered off, the phenomenon of heating of the electrical and electronic equipment inside the elevator 1 due to current overload can be reduced, and the risk of fire caused by electrical failure in the elevator 1 can be avoided, so as to further improve safety.

[0052] The elevator 1 usually requires a large amount of power to drive the motor and other electrical equipment inside the elevator 1. For this reason, a three-phase power supply is usually used to power the elevator 1 to provide a larger power output and thus ensure the operational reliability of the elevator 1. When the power supply 3 used by the elevator 1 is a three-phase power supply, such as Figure 6 As shown, the switch circuit 25 may include a first switch K1, a second switch K2 and a third switch K3, wherein a first end of the first switch K1, a first end of the second switch K2 and a first end of the third switch K3 are respectively connected to three phases of a three-phase power supply, a second end of the first switch K1, a second end of the second switch K2 and a second end of the third switch K3 are respectively connected to three power input terminals of the elevator 1, and a controlled end of the first switch K1, a controlled end of the second switch K2 and a controlled end of the third switch K3 are all connected to the controller 23.

[0053] In this example, when the elevator 1 is in the normal operation mode, the controller 23 controls the first switch K1, the second switch K2 and the third switch K3 to be turned on, so that the three-phase power supply can normally supply power to the elevator 1. When the elevator 1 is in the emergency avoidance operation mode, the controller 23 controls the first switch K1, the second switch K2 and the third switch K3 to be turned off to disconnect the branch between the three-phase power supply and the elevator 1, thereby realizing power-off protection for the elevator 1. Secondly, each phase of the three-phase power supply and the corresponding power input terminal of the elevator 1 are controlled by the first switch K1, the second switch K2 and the third switch K3, respectively, and the control accuracy and reliability are high.

[0054] Optionally, the first switch K1, the second switch K2 and the third switch K3 in the switch circuit 25 can be selected from N-type metal oxide semiconductor (NMOS) field effect transistors, P-type metal oxide semiconductor (PMOS) field effect transistors, IGBTs, transistors, relay circuits or other devices or circuits that can achieve on-off functions. This application does not make any specific restrictions on this.

[0055] When the power supply 3 adopts a three-phase power supply, in one example, Figure 7 As shown, the elevator device is further provided with a fourth switch K4, a fifth switch K5 and a sixth switch K6, a first end of the fourth switch K4, a first end of the fifth switch K5 and a first end of the sixth switch K6 are respectively connected to the three phases of the three-phase power supply, a second end of the fourth switch K4, a second end of the fifth switch K5 and a second end of the sixth switch K6 are respectively connected to the first end of the first switch K1, the first end of the second switch K2 and the first end of the third switch K3, and a controlled end of the fourth switch K4, a controlled end of the fifth switch K5 and a controlled end of the sixth switch K6 are connected.

[0056] In this example, the fourth switch K4, the fifth switch K5 and the sixth switch K6 are hardware switches. When the elevator 1 is in the normal operation mode, the controller 23 controls the first switch K1, the second switch K2 and the third switch K3 to be turned on, and the user can manually turn on the fourth switch K4, the fifth switch K5 and the sixth switch K6, so that the three-phase power supply can supply power to the elevator 1 normally. When the elevator 1 is in the emergency avoidance operation mode, the controller 23 controls the first switch K1, the second switch K2 and the third switch K3 to be turned off, and the user can manually turn off the fourth switch K4, the fifth switch K5 and the sixth switch K6 to disconnect the branch between the three-phase power supply and the elevator 1, thereby realizing double power-off protection for the elevator 1, and the power-off effect is better. Secondly, when the controller 23 fails due to fire, the user can manually turn off the fourth switch K4, the fifth switch K5 and the sixth switch K6, thereby realizing power-off protection for the elevator 1.

[0057] In order to enable the user to be informed of the fault message of the elevator 1 in time, in one example, Figure 8 As shown, the elevator fault detection system 2 also includes an alarm circuit 26, and the alarm circuit 26 is connected to the controller 23. When the controller 23 determines that the elevator 1 is in a fault state based on the second environmental information, the controller 23 is also used to control the alarm circuit 26 to give an alarm prompt to remind the personnel inside the elevator 1 that the elevator 1 is faulty at this time, and the elevator 1 needs to enter the emergency avoidance operation mode and stop safely nearby. In this way, by setting the alarm circuit 26, the user can be reminded that the elevator 1 is in a faulty state at this time, so that the user can promptly know the status information of the elevator 1 and evacuate the elevator 1 in time.

[0058] Optionally, the alarm circuit 26 may be provided with a voice device or a light emitting diode (LED). When the alarm circuit 26 adopts a voice device, the voice device may be provided on the top of the elevator car 1, and a prompt voice may be preset in the voice device, such as "The elevator is out of order and will stop safely nearby. Please evacuate in time." When the elevator 1 enters the emergency avoidance operation mode, the controller 23 triggers the voice device for voice prompts. When the alarm circuit 26 adopts a light emitting diode, the light emitting diode may be provided on the top of the elevator car 1, and when the elevator 1 enters the emergency avoidance operation mode, the light emitting diode emits light to prompt the user that the elevator 1 is out of order. The alarm circuit 26 may also be provided with other prompt devices, and this application does not make any specific restrictions on this.

[0059] The elevator 1 is usually provided with a frequency converter, which is used to control the motor speed and torque in the elevator 1, that is, it adjusts the motor speed by changing the power frequency and voltage supplied to the motor, thereby realizing precise control of the running speed of the elevator 1. The electronic components inside the frequency converter are very sensitive to temperature. Excessive temperature may cause the performance of the components to degrade or even fail, thus affecting the normal use of the frequency converter and further affecting the normal operation of the elevator 1. For this reason, in one example, Figure 8 As shown, the elevator fault detection system 2 also includes a third detection circuit 27, which is connected to the controller 23 and the inverter 11. The third detection circuit 27 is used to obtain the current temperature of the inverter 11 and send it to the controller 23. The controller 23 is also used to control the elevator 1 to stop safely nearby when the current temperature of the inverter 11 is greater than the temperature threshold.

[0060] In this example, a temperature threshold is set inside the controller 23. When the current temperature of the inverter 11 is less than or equal to the temperature threshold, that is, the inverter 11 does not have an overheating problem at this time, and the inverter 11 continues to work in the normal operation mode. When the current temperature of the inverter 11 is greater than the temperature threshold, it means that the inverter 11 is overheated at this time. In order to avoid the inverter 11 from failing due to overheating, the controller 23 will control the elevator 1 to safely stop nearby and enter the waiting mode (the waiting mode is waiting for the user to select the corresponding floor). In the waiting mode, the elevator 1 is usually in a low power consumption state. At this time, the workload of the motor and other electrical components in the elevator 1 is low. Therefore, the heat generated by the inverter 11 will also be reduced accordingly, thereby reducing the temperature of the inverter 11. When the elevator 1 is in the waiting mode, the third detection circuit 27 will continue to detect the current temperature of the inverter 11 in real time and feedback to the controller 23. When the inverter 11 dissipates heat to its current temperature below the temperature threshold, the elevator 1 can be released from the waiting mode. In this way, by setting the third detection circuit 27, the temperature change trend of the inverter 11 can be continuously monitored to dissipate heat in time when the inverter 11 is overheated, thereby improving the reliability of the inverter 11 and extending the service life of the inverter 11. It is worth noting that when the current temperature of the inverter 11 is much higher than the temperature threshold, the controller 23 can control the elevator 1 to enter the locked state.

[0061] Optionally, the third detection circuit 27 uses a temperature sensor, which can detect the current temperature of the inverter 11 in real time. The third detection circuit 27 can be an additional temperature sensor, or it can reuse the temperature sensor inside the controller 11. This application does not make any specific restrictions on this.

[0062] To further improve the heat dissipation effect, in one example, Fig. 9As shown, the elevator fault detection system 2 also includes a ventilation circuit 28, which is connected to the controller 23 and the external ventilation device 4. When the controller 23 detects that the current temperature of the inverter 11 is higher than the temperature threshold, the controller 23 is also used to control the ventilation circuit 28 to drive the external ventilation device 4 to work, so as to achieve cooling of the inverter 11, thereby improving the heat dissipation effect of the inverter 11. In this example, the external ventilation device 4 can be a device capable of cooling, such as a machine room fan, and this application does not make specific restrictions on this.

[0063] In one example, if Fig.10 As shown, the elevator device further includes a display screen 5 and a display system 6. The display screen 5 is arranged inside the elevator 1, and the display system 6 is connected to the display screen 5 and the elevator fault detection system 2. When the elevator fault detection system 2 detects that a certain floor is in a fault state or the elevator 1 is in a fault state, the elevator fault detection system 2 will send the first detection information or the second detection information characterized as abnormal to the display system 1, and the display system 1 drives the display screen 5 to display the fault based on the first detection information or the second detection information.

[0064] Optionally, the display screen 1 may include a display screen inside the elevator 1 and an outbound call display screen outside the elevator 1. When the elevator fault detection system 2 detects that a certain floor is in a faulty state or the elevator 1 is in a faulty state, the display screen inside the elevator 1 can prompt the users in the car of the specific fault information of the elevator 1 at this time. At the same time, the outbound call display screen outside the elevator 1 can also prompt the users waiting for the elevator 1 outside of the elevator 1 of the specific fault information of the elevator 1 at this time.

[0065] In summary, the controller 23 in the elevator device provided by the present application can monitor the status information of different floors in real time through multiple first environmental information, and promptly know the floor in a fault state to switch the operation mode of the elevator 1 accordingly, so that the elevator 1 can be safely parked nearby, with high timeliness, so that the personnel in the elevator 1 can evacuate the elevator 1 and dangerous places in time, thereby improving a certain degree of safety. The multiple first environmental information obtained by the multiple first detection circuits 21 can be centrally managed and numbered through a signal processing circuit 22. After the signal processing circuit 22 numbers the multiple first environmental information, all the first environmental information is transmitted to the controller 23 in a unified format, which is convenient for the subsequent data analysis and fault diagnosis of the controller 23. In addition, the multiple first detection circuits 21 are electrically connected to the signal processing circuit 22, and do not need to be connected to the controller 23, which reduces the hardware complexity and wiring requirements, and saves the port resources of the controller 23. Secondly, the controller 23 can also monitor the internal status information of the elevator 1 in real time based on the second environmental information, and promptly know that the elevator 1 is in a faulty state to switch the operating mode of the elevator 1 accordingly, so that the elevator 1 can be safely parked nearby or the door can be kept open with high timeliness, so that the people in the elevator 1 can evacuate the elevator 1 in time, avoiding the problem of people trapped inside the elevator 1 inhaling too much smoke, so as to further improve safety.

[0066] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0067] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An elevator fault detection system, characterized in that: The elevator fault detection system comprises: A plurality of first detection circuits, each of which corresponds to a plurality of floors one by one, and the first detection circuits are used to obtain first environmental information of the corresponding floors, wherein the first environmental information at least includes gas information; a signal processing circuit, the signal processing circuit being connected to the plurality of the first detection circuits and configured to receive the first environmental information from the plurality of the first detection circuits; and A controller is connected to the signal processing circuit and the elevator, and is used to receive multiple first environmental information processed by the signal processing circuit, and determine the status information of the floor based on the multiple first environmental information, the status information includes a fault state and a normal state. When the controller determines that the corresponding floor is in a fault state based on one of the first environmental information, the controller is also used to control the elevator to stop safely nearby.

2. The elevator fault detection system according to claim 1, characterized in that: The elevator fault detection system also includes: A switch circuit, wherein a first end of the switch circuit is connected to a power input end of the elevator, a second end of the switch circuit is connected to a power supply, and a controlled end of the switch circuit is connected to the controller; Wherein, after the controller controls the elevator to stop safely nearby, the controller is also used to control the switch circuit to disconnect.

3. The elevator fault detection system according to claim 2, characterized in that: The switch circuit is any one of a relay switch, a triode or a metal oxide semiconductor field effect transistor.

4. The elevator fault detection system according to claim 1, characterized in that: The elevator fault detection system also includes: a second detection circuit, the second detection circuit being connected to the controller, the second detection circuit being used to obtain second environmental information of the elevator and sending it to the controller, the controller being further used to determine state information of the elevator based on the second environmental information, and when the controller determines that the elevator is in a fault state based on the second environmental information, the controller is used to control the elevator to stop safely nearby; The second environmental information at least includes fire source information, smoke information and gas information.

5. The elevator fault detection system according to claim 4, characterized in that: The second detection circuit comprises: A fire source detection sensor, the fire source detection sensor is connected to the controller, and the fire source detection sensor is used to obtain the fire source information and send it to the controller; a smoke detection sensor, the smoke detection sensor being connected to the controller and being used for acquiring the smoke information and sending it to the controller; and, A gas detection sensor is connected to the controller, and is used to obtain the gas information and send it to the controller.

6. The elevator fault detection system according to claim 4, characterized in that: The elevator fault detection system also includes: An alarm circuit is connected to the controller. When the controller determines that the elevator is in a fault state based on the second environmental information, the controller is also used to control the alarm circuit to issue an alarm prompt.

7. The elevator fault detection system according to any one of claims 1 to 6, characterized in that: The elevator is provided with a frequency converter, and the elevator fault detection system further comprises: The third detection circuit is connected to the controller and the frequency converter, and is used to obtain the current temperature of the frequency converter and send it to the controller. The controller is also used to control the elevator to stop safely nearby when the current temperature is greater than a temperature threshold.

8. The elevator fault detection system according to claim 7, characterized in that: The elevator fault detection system also includes: A ventilation circuit is connected to the controller and an external ventilation device. When the current temperature is higher than the temperature threshold, the controller is also used to control the ventilation circuit to drive the external ventilation device to work.

9. An elevator device, characterized in that: include: elevator; as well as, The elevator fault detection system according to any one of claims 1 to 8, wherein the elevator fault detection system is connected to the elevator.

10. The elevator device according to claim 9, characterized in that: The elevator device further comprises: A display screen is arranged inside the elevator; and A display system is connected to the display screen and the elevator fault detection system.

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