Elevator car rescue information feedback system based on the Internet of Things

Abstract

The present invention relates to the field of elevator rescue technology, and in particular to an elevator car rescue information feedback system based on the Internet of Things. In the present invention, a signal output module periodically sends a distress simulation signal, and when the distress simulation signal cannot be received, a signal transmission problem is discovered in time, and whether the signal is received in time is analyzed according to the time interval between the sending signal and the receiving signal. An identification code is set outside the elevator car, and a sensor is set on each floor. The sensor identifies when it reaches a predetermined distance from the identification code and records the identification time. When the time interval is long, the timeliness of signal reception is further judged based on the identification time corresponding to each time interval. If the longer time intervals are dispersed, it is considered that there is a false touch. If the distribution is relatively concentrated, it is considered that there is a safety hazard in the car, and braking is performed in time to improve the rescue efficiency and reduce the safety hazard.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator rescue, and in particular to an elevator car rescue information feedback system based on the Internet of Things. Background Art

[0002] As a commonly used tool, elevators have become an indispensable presence in high floors. The existing technology uses the Internet of Things technology. When a power outage or malfunction occurs in the elevator, the remote mobile phone or computer receives feedback information, and the maintenance personnel and property management personnel immediately start the automatic rescue system through the operation of the mobile phone or computer, thereby improving the rescue efficiency. However, due to the poor signal in the elevator, there is a delay in the reception of the rescue signal, resulting in low rescue efficiency and high safety risks.

[0003] Chinese Patent Publication No.: CN112193962A discloses a remote-operated elevator power failure emergency rescue system, including an information module, a control module, and a hardware module; the information module includes an information receiving module and an information feedback module; the control module includes a remote control module, and the remote control module includes a power control module, a rescue switch module, and a jog brake control module; the hardware module includes a backup power supply, a safety circuit, a shaft limit switch, a hall door, and a car door; and each module is interconnected. Compared with the prior art, the advantages of the present invention are: the system is clear and easy to implement, and the remote operation is realized through the Internet of Things technology. When the elevator has a power outage or a failure, the remote mobile phone or computer receives feedback information, and the maintenance personnel and property management personnel immediately start the automatic rescue system through the operation of the mobile phone or computer. At this time, the elevator is in a state of no energy, which is safe and reliable, and will be put into normal operation after the mains power is reconnected or the elevator fault is eliminated.

[0004] However, the prior art still has the following problems:

[0005] Due to poor signals in the elevator or aging of the elevator, there is a delay in receiving the rescue signal. The exact location of the elevator car cannot be determined in the disconnected state, resulting in low rescue efficiency and high safety risks. Summary of the invention

[0006] To this end, the present invention provides an elevator car rescue information feedback system based on the Internet of Things, which is used to overcome the problems in the prior art that there is a delay in receiving rescue signals due to poor signals in the elevator or aging of the elevator, and the exact position of the elevator car cannot be determined in the disconnected state, resulting in low rescue efficiency and high safety risks.

[0007] To achieve the above purpose, the present invention provides an elevator car rescue information feedback system based on the Internet of Things. It includes:

[0008] A signal output module, which is used to output a distress simulation signal, a distress signal and an interactive signal;

[0009] A signal recognition module, which is connected to the signal output module, is used to receive and recognize the signal output by the signal output module, and determine whether to issue a rescue signal prompt according to the type of the received signal;

[0010] A log database, which is connected to the signal output module and the signal identification module, and is used to record the signal output time point when the signal output module outputs the signal and the signal reception time point when the signal identification module receives the signal;

[0011] A car data acquisition module, which includes a number of sensors arranged outside the elevator car for collecting the running status of the car, and identification codes set at preset points on each floor in the elevator shaft;

[0012] A video monitoring module, which is connected to the car data acquisition module and is used to collect video information in the car;

[0013] A building monitoring module, which is connected to the video monitoring module and is used to collect building video information outside the elevator car;

[0014] A braking module, which is connected to the car data acquisition module and constrains the car in a corresponding position by clamping the elevator shaft side wall and / or the track;

[0015] An analysis module is connected to the signal output module, the signal recognition module, the log database, the car data acquisition module, the video monitoring module, the building monitoring module and the braking module, and is used to analyze whether the timeliness of the rescue information feedback of the elevator car is qualified based on the signal reception time interval between a single signal reception time point and a signal output time point in the log database, perform a secondary judgment on whether the timeliness of the rescue information feedback of the elevator car is qualified based on the distribution of the signal reception time interval, determine the time node when the sensor in the car data acquisition module collects the last identification code, and determine the reason for the unqualified timeliness of the rescue information feedback of the elevator car according to the time node when the sensor collects the last identification code and / or the cumulative time for the sensor to collect the identification code.

[0016] Furthermore, the analysis module analyzes whether the timeliness of the rescue information feedback of the elevator car is qualified based on the signal reception time interval between the single signal reception time point and the signal output time point in the log database, including:

[0017] Determine whether the timeliness of the rescue information feedback of the elevator car is qualified;

[0018] A second determination is made on whether the timeliness of the rescue information feedback of the elevator car is qualified based on the distribution of the signal receiving time interval, and the signal receiving time interval is marked as the time interval to be determined.

[0019] Or, it is determined that the timeliness of the rescue information feedback of the elevator car is unsatisfactory, and that there is a hidden danger of failure in the car.

[0020] Furthermore, the analysis module performs a secondary determination on whether the timeliness of the rescue information feedback of the elevator car is qualified based on the distribution of the signal receiving time interval, including:

[0021] Determine the central time point of the time interval to be determined within the preset time period,

[0022] Based on the distribution of the central time point, it is determined that there is a false touch, and the rescue information feedback of the elevator car is timely and qualified.

[0023] Or, it is determined that the timeliness of the rescue information feedback of the elevator car is unsatisfactory, and that there is a hidden danger of failure in the car.

[0024] Furthermore, the analysis module determines the reasons why the timeliness of the rescue information feedback of the elevator car is unqualified according to the time node when the sensor collects the last identification code, including:

[0025] Determine the time node when the sensor collected the last identification code and obtain the first characteristic time node.

[0026] Determine the initial time node of the signal reception time interval to be analyzed, and obtain the second characteristic time node,

[0027] Calculate the time interval between the first characteristic time node and the second characteristic time node to obtain the characteristic time interval.

[0028] If the characteristic time interval is less than or equal to the first preset characteristic time interval, it is determined that there is a potential safety hazard, and the brake module is controlled to perform emergency braking;

[0029] If the characteristic time interval is greater than the first preset characteristic time interval and less than or equal to the second preset characteristic time interval, it is determined that the reason for the unqualified timeliness of the rescue information feedback of the elevator car is further analyzed based on the cumulative time length of the sensor collecting the identification code;

[0030] If the characteristic time interval is greater than the second preset characteristic time interval, the signal output module is controlled to send an interactive signal.

[0031] Furthermore, the emergency braking of the braking module includes:

[0032] Determine the time point at which the sensor recognizes each identification code,

[0033] Determine the running speed and acceleration of the elevator car according to each time node,

[0034] A restraining force for the rail is determined based on the determined speed and acceleration of the elevator car.

[0035] Furthermore, the braking module determines the number of targets in the car based on the video information in the car collected by the video monitoring module.

[0036] The restraining force is modified based on the determined target quantity.

[0037] Furthermore, the analysis module further analyzes the reasons why the timeliness of the rescue information feedback of the elevator car is unqualified based on the cumulative time length of the sensor collecting the identification code, including:

[0038] Determine the cumulative time for the sensor to identify each of the identification codes,

[0039] Calculate the variance of each cumulative duration,

[0040] If the variance is less than or equal to the preset variance, it is determined that the elevator fails and stops running, and the standby motor is started;

[0041] If the variance is greater than the preset variance, it is determined that there is a potential safety hazard, and the brake module is controlled to perform emergency braking.

[0042] Furthermore, the braking module corrects the running speed of the standby motor based on the accumulated time for the sensor to identify each identification code.

[0043] Furthermore, the analysis module controls the signal output module to send an interactive signal, including:

[0044] Determine the time point when the interaction signal is sent, and obtain the first interaction feature time point.

[0045] Determine the time node of receiving the feedback signal of the interaction signal, and obtain the second interaction feature time point,

[0046] Calculate the feedback duration between the first interaction feature time point and the second interaction feature time point,

[0047] It is determined whether the transmission of the signal is interfered based on the feedback duration.

[0048] Furthermore, the analysis module determines whether the transmission of the signal is interfered based on the feedback duration, including:

[0049] Determine that the signal is not interfered with, determine the position of the car based on the position of the identification code recognized by the sensor, and control the signal recognition module to issue a rescue signal prompt,

[0050] Or, it is determined that no feedback signal is received and the signal is interfered, the position of the car is determined based on the video information of the building monitoring module, and the signal recognition module is controlled to send a rescue signal prompt.

[0051] Compared with the prior art, the beneficial effect of the present invention lies in that the signal output module in the present invention periodically sends a distress simulation signal, promptly discovers the signal transmission problem when the distress simulation signal cannot be received, analyzes whether the signal is received in time according to the time interval between the sending signal and the receiving signal, sets an identification code on the outside of the elevator car, sets a sensor on each floor, the sensor identifies when it reaches a predetermined distance from the identification code, and records the identification time, and when the time interval is long, the timeliness of signal reception is further judged based on the identification time corresponding to each time interval; if the longer time intervals are dispersed, it is considered that there is a false touch; if they are concentrated, it is considered that there is a safety hazard in the car, and brakes are applied in time to improve rescue efficiency and reduce safety hazards.

[0052] Furthermore, in the present invention, the signal output module periodically outputs a distress simulation signal, the signal identification module identifies the distress simulation signal, analyzes the transmission status of the signal according to the reception time of the distress simulation signal, and processes it in time to avoid the inability to receive the distress signal in the elevator due to signal transmission problems, thereby reducing safety hazards.

[0053] Furthermore, during the lifting and lowering process of the elevator car in the present invention, the sensor identifies the identification codes passing by, and analyzes whether the elevator car is out of speed control based on the time interval for identifying each identification code. When the time interval is particularly small, it is determined that the car is running too fast, and the position of the elevator car is determined based on the identification information of the sensor and the identification code, and emergency braking is performed, further improving the rescue efficiency.

[0054] Furthermore, the present invention counts the time it takes for the sensor to identify each identification code during the operation of the elevator car, calculates the variance of each time, analyzes the movement of the elevator car based on the room difference, and performs emergency braking or activates the backup motor in time according to the analysis results to avoid safety problems caused by elevator aging or motor failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a structural block diagram of the elevator car rescue information feedback system based on the Internet of Things of the present invention;

[0056] Figure 2 A flow chart for analyzing whether the timeliness of the rescue information feedback of the elevator car is qualified;

[0057] Figure 3 A flow chart for secondary determination of whether the timeliness of the rescue information feedback of the elevator car is qualified;

[0058] Figure 4 The present invention is a flow chart for determining the reasons why the timeliness of the rescue information feedback of the elevator car is unqualified based on the accumulated time. DETAILED DESCRIPTION

[0059] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0060] It should be pointed out that the data in this embodiment are obtained by comprehensive analysis and evaluation of the historical data of the system of the present invention in the six months before this determination and the corresponding historical determination results. It can be understood by those skilled in the art that the determination method of the system of the present invention for a single parameter mentioned above can be to select the value with the highest proportion as the preset standard parameter according to the data distribution, use weighted summation to use the obtained value as the preset standard parameter, substitute each historical data into a specific formula and use the value obtained by the formula as the preset standard parameter or other selection methods, as long as the system of the present invention can clearly define different specific situations in the single determination process through the obtained values.

[0061] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0062] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0063] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] See also Figure 1 As shown, it is a structural block diagram of the elevator car rescue information feedback system based on the Internet of Things of the present invention.

[0065] The embodiment of the present invention provides an elevator car rescue information feedback system based on the Internet of Things, including:

[0066] A signal output module, which is used to output a distress simulation signal, a distress signal and an interactive signal;

[0067] A signal recognition module, which is connected to the signal output module, is used to receive and recognize the signal output by the signal output module, and determine whether to issue a rescue signal prompt according to the type of the received signal;

[0068] A log database, which is connected to the signal output module and the signal identification module, and is used to record the signal output time point when the signal output module outputs the signal and the signal reception time point when the signal identification module receives the signal;

[0069] A car data acquisition module, which includes a number of sensors arranged outside the elevator car for collecting the running status of the car, and identification codes set at preset points on each floor in the elevator shaft;

[0070] A video monitoring module, which is connected to the car data acquisition module and is used to collect video information in the car;

[0071] A building monitoring module, which is connected to the video monitoring module and is used to collect building video information outside the elevator car;

[0072] A braking module, which is connected to the car data acquisition module and constrains the car in a corresponding position by clamping the elevator shaft side wall and / or the track;

[0073] An analysis module is connected to the signal output module, the signal recognition module, the log database, the car data acquisition module, the video monitoring module, the building monitoring module and the braking module, and is used to analyze whether the timeliness of the rescue information feedback of the elevator car is qualified based on the signal reception time interval between a single signal reception time point and a signal output time point in the log database, perform a secondary judgment on whether the timeliness of the rescue information feedback of the elevator car is qualified based on the distribution of the signal reception time interval, determine the time node when the sensor in the car data acquisition module collects the last identification code, and determine the reason for the unqualified timeliness of the rescue information feedback of the elevator car according to the time node when the sensor collects the last identification code and / or the cumulative time for the sensor to collect the identification code.

[0074] Specifically, in this embodiment, the signal output module periodically sends a distress simulation signal, and the signal identification module identifies the distress simulation signal and does not send a rescue signal prompt in response to the distress simulation signal.

[0075] See also Figure 2 As shown, it is a flow chart for analyzing whether the timeliness of the rescue information feedback of the elevator car is qualified.

[0076] Specifically, the analysis module analyzes whether the timeliness of the rescue information feedback of the elevator car is qualified based on the signal reception time interval between a single signal reception time point and a signal output time point in the log database, including:

[0077] If the signal receiving time interval is less than or equal to the first preset signal receiving time interval, it is determined that the timeliness of the rescue information feedback of the elevator car is qualified;

[0078] If the signal receiving time interval is greater than the first preset signal receiving time interval and less than or equal to the second preset signal receiving time interval, a secondary determination is made as to whether the timeliness of the rescue information feedback of the elevator car is qualified based on the distribution of the signal receiving time interval, and the signal receiving time interval is marked as a time interval to be determined;

[0079] If the signal receiving time interval is greater than the second preset signal receiving time interval, it is determined that the timeliness of the rescue information feedback of the elevator car is unqualified, and it is determined that there is a hidden danger of failure in the car.

[0080] Specifically, in this embodiment, the first preset signal receiving time interval and the second preset signal receiving time interval are obtained by pre-measurement, and the transmission time of signals of several elevators of the same type operating normally is recorded, and the average transmission time is calculated. The first preset signal receiving time interval is 0.85 to 0.9 times the average transmission time, and the second preset signal receiving time interval is 0.95 to 1.1 times the average transmission time.

[0081] See also Figure 3 As shown, it is a flow chart for secondary determination of whether the timeliness of the rescue information feedback of the elevator car is qualified.

[0082] Specifically, the analysis module performs a secondary determination on whether the timeliness of the rescue information feedback of the elevator car is qualified based on the distribution of the signal receiving time interval, including:

[0083] Determine the central time point of the time interval to be determined within the preset time period,

[0084] If the central time points are dispersed, it is determined that there is a false touch and the timeliness of the rescue information feedback of the elevator car is qualified;

[0085] If the central time points are concentrated, it is determined that the timeliness of the rescue information feedback of the elevator car is unqualified, and it is determined that there is a hidden danger of failure in the car.

[0086] Specifically, the analysis module determines the reasons why the timeliness of the rescue information feedback of the elevator car is unqualified according to the time node when the sensor collects the last identification code, including:

[0087] Determine the time node when the sensor collected the last identification code and obtain the first characteristic time node.

[0088] Determine the initial time node of the signal reception time interval to be analyzed, and obtain the second characteristic time node,

[0089] Calculate the time interval between the first characteristic time node and the second characteristic time node to obtain the characteristic time interval.

[0090] If the characteristic time interval is less than or equal to the first preset characteristic time interval, it is determined that there is a potential safety hazard, and the brake module is controlled to perform emergency braking;

[0091] If the characteristic time interval is greater than the first preset characteristic time interval and less than or equal to the second preset characteristic time interval, it is determined that the reason for the unqualified timeliness of the rescue information feedback of the elevator car is further analyzed based on the cumulative time length of the sensor collecting the identification code;

[0092] If the characteristic time interval is greater than the second preset characteristic time interval, the signal output module is controlled to send an interactive signal.

[0093] Specifically, in this embodiment, the first preset characteristic time interval and the second preset characteristic time interval are obtained by pre-measurement, and the recognition time of several identification codes is recorded to solve the average recognition time. The first preset characteristic time interval is 0.75~0.8 times the average recognition time, and the second preset characteristic time interval is 0.95~1.2 times the average recognition time.

[0094] Specifically, the emergency braking of the braking module includes:

[0095] Determine the time point at which the sensor recognizes each identification code,

[0096] Determine the running speed and acceleration of the elevator car according to each time node,

[0097] A restraining force for the rail is determined based on the determined speed and acceleration of the elevator car.

[0098] Specifically, the braking module determines the number of targets in the car based on the video information in the car collected by the video monitoring module.

[0099] The restraining force is modified based on the determined target quantity.

[0100] Specifically, in this embodiment, the greater the number of targets, the greater the required restraint force, considering that there are more people in the car and the car is heavier.

[0101] Specifically, the constraint is modified based on the determined target quantity, wherein:

[0102] The increase in constraint is positively correlated with the number of targets.

[0103] See also Figure 4 As shown, it is a determination flow chart for analyzing the reasons why the timeliness of the rescue information feedback of the elevator car is unqualified based on the accumulated time.

[0104] Specifically, the analysis module further analyzes the reasons why the timeliness of the rescue information feedback of the elevator car is unqualified based on the cumulative time of the sensor collecting the identification code, including:

[0105] Determine the cumulative time for the sensor to identify each of the identification codes,

[0106] Calculate the variance of each cumulative duration,

[0107] If the variance is less than or equal to the preset variance, it is determined that the elevator fails and stops running, and the standby motor is started;

[0108] If the variance is greater than the preset variance, it is determined that there is a potential safety hazard, and the brake module is controlled to perform emergency braking.

[0109] Specifically, in this embodiment, the preset variance is obtained by pre-measurement, and the duration of the sensor identifying each identification code in several safety states is obtained, and the variance of each duration is solved. The preset variance is 0.85-1.1 times of the variance.

[0110] Specifically, in this embodiment, the elevator car is running, the distance between the sensor and the identification code is shortened, and the sensor records the time from recognition to identification code to completion of recognition.

[0111] Specifically, the braking module corrects the running speed of the standby motor based on the accumulated time length of the sensor identifying each identification code.

[0112] Specifically, in this embodiment, the increase in the running speed of the motor is positively correlated with the accumulated duration of each identification code.

[0113] In this embodiment, optionally,

[0114] The accumulated time is compared with the first preset accumulated time and the second preset accumulated time,

[0115] If the accumulated time is less than or equal to the first preset accumulated time, the first running speed is increased, and the first running speed is 0.05 times the initial running speed;

[0116] If the accumulated time is greater than the first preset accumulated time and less than or equal to the second preset accumulated time, increase the second running speed, which is 0.15 times the initial running speed;

[0117] If the accumulated time is greater than the second preset accumulated time, increase the third running speed, which is 0.2 times the initial running speed;

[0118] Among them, the first preset cumulative time and the second preset cumulative time are obtained in advance, and the recognition time in the process of the sensor moving to the identification code under several safe states is obtained to solve the average recognition time. The first preset cumulative time is 0.85~0.9 times the average recognition time, and the second preset cumulative time is 0.95~1.05 times the average recognition time.

[0119] Specifically, the analysis module controls the signal output module to send an interactive signal, including:

[0120] Determine the time point when the interaction signal is sent, and obtain the first interaction feature time point.

[0121] Determine the time node of receiving the feedback signal of the interaction signal, and obtain the second interaction feature time point,

[0122] Calculate the feedback duration between the first interaction feature time point and the second interaction feature time point,

[0123] It is determined whether the transmission of the signal is interfered based on the feedback duration.

[0124] Specifically, the analysis module determines whether the transmission of the signal is interfered based on the feedback duration, including:

[0125] If the feedback duration is less than or equal to the preset feedback duration, it is determined that the signal is not interfered with, and the position of the car is determined based on the position of the identification code recognized by the sensor, and the signal recognition module is controlled to issue a rescue signal prompt;

[0126] If the feedback duration is greater than the preset feedback duration, it is determined that no feedback signal is received and the signal is interfered with. The position of the car is determined based on the video information of the building monitoring module, and the signal recognition module is controlled to send a rescue signal prompt.

[0127] Specifically, in this embodiment, the preset feedback duration is obtained by pre-measurement, and the feedback durations of several interactive signals are obtained to solve the average feedback duration. The preset feedback duration is 0.85 to 1.15 times the average feedback duration.

[0128] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0129] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An elevator car rescue information feedback system based on the Internet of Things, characterized in that: include: A signal output module, which is used to output a distress simulation signal, a distress signal and an interactive signal; A signal recognition module, which is connected to the signal output module, is used to receive and recognize the signal output by the signal output module, and determine whether to issue a rescue signal prompt according to the type of the received signal; A log database, which is connected to the signal output module and the signal identification module, and is used to record the signal output time point when the signal output module outputs the signal and the signal reception time point when the signal identification module receives the signal; A car data acquisition module, which includes a number of sensors arranged outside the elevator car for collecting the running status of the car, and identification codes set at preset points on each floor in the elevator shaft; A video monitoring module, which is connected to the car data acquisition module and is used to collect video information in the car; A building monitoring module, which is connected to the video monitoring module and is used to collect building video information outside the elevator car; A braking module, which is connected to the car data acquisition module and constrains the car in a corresponding position by clamping the elevator shaft side wall and / or the track; An analysis module is connected to the signal output module, the signal recognition module, the log database, the car data acquisition module, the video monitoring module, the building monitoring module and the braking module, and is used to analyze whether the timeliness of the rescue information feedback of the elevator car is qualified based on the signal reception time interval between a single signal reception time point and a signal output time point in the log database, perform a secondary judgment on whether the timeliness of the rescue information feedback of the elevator car is qualified based on the distribution of the signal reception time interval, determine the time node when the sensor in the car data acquisition module collects the last identification code, and determine the reason for the unqualified timeliness of the rescue information feedback of the elevator car according to the time node when the sensor collects the last identification code and / or the cumulative time for the sensor to collect the identification code.

2. The elevator car rescue information feedback system based on the Internet of Things according to claim 1 is characterized in that: The analysis module analyzes whether the timeliness of the rescue information feedback of the elevator car is qualified based on the signal reception time interval between a single signal reception time point and a signal output time point in the log database, including: Determine whether the timeliness of the rescue information feedback of the elevator car is qualified; A second determination is made on whether the timeliness of the rescue information feedback of the elevator car is qualified based on the distribution of the signal receiving time interval, and the signal receiving time interval is marked as the time interval to be determined. Or, it is determined that the timeliness of the rescue information feedback of the elevator car is unsatisfactory, and that there is a hidden danger of failure in the car.

3. The elevator car rescue information feedback system based on the Internet of Things according to claim 2 is characterized in that: The analysis module performs a secondary determination on whether the timeliness of the rescue information feedback of the elevator car is qualified based on the distribution of the signal receiving time interval, including: Determine the central time point of the time interval to be determined within the preset time period, Based on the distribution of the central time point, it is determined that there is a false touch, and the rescue information feedback of the elevator car is timely and qualified. Or, it is determined that the timeliness of the rescue information feedback of the elevator car is unsatisfactory, and that there is a hidden danger of failure in the car.

4. The elevator car rescue information feedback system based on the Internet of Things according to claim 1 is characterized in that: The analysis module determines the reasons why the timeliness of the rescue information feedback of the elevator car is unqualified according to the time node when the sensor collects the last identification code, including: Determine the time node when the sensor collected the last identification code and obtain the first characteristic time node. Determine the initial time node of the signal reception time interval to be analyzed, and obtain the second characteristic time node, Calculate the time interval between the first characteristic time node and the second characteristic time node to obtain the characteristic time interval. If the characteristic time interval is less than or equal to the first preset characteristic time interval, it is determined that there is a potential safety hazard, and the brake module is controlled to perform emergency braking; If the characteristic time interval is greater than the first preset characteristic time interval and less than or equal to the second preset characteristic time interval, it is determined that the reason for the unqualified timeliness of the rescue information feedback of the elevator car is further analyzed based on the cumulative time length of the sensor collecting the identification code; If the characteristic time interval is greater than the second preset characteristic time interval, the signal output module is controlled to send an interactive signal.

5. The elevator car rescue information feedback system based on the Internet of Things according to claim 4 is characterized in that: The emergency braking of the brake module comprises: Determine the time point at which the sensor recognizes each identification code, Determine the running speed and acceleration of the elevator car according to each time node, A restraining force for the rail is determined based on the determined speed and acceleration of the elevator car.

6. The elevator car rescue information feedback system based on the Internet of Things according to claim 5 is characterized in that: The braking module determines the number of targets in the car based on the video information in the car collected by the video monitoring module. The restraining force is modified based on the determined target quantity.

7. The elevator car rescue information feedback system based on the Internet of Things according to claim 4 is characterized in that: The analysis module further analyzes the reasons why the timeliness of the rescue information feedback of the elevator car is unqualified based on the cumulative time length of the sensor collecting the identification code, including: Determine the cumulative time for the sensor to identify each of the identification codes, Calculate the variance of each cumulative duration, If the variance is less than or equal to the preset variance, it is determined that the elevator fails and stops running, and the standby motor is started; If the variance is greater than the preset variance, it is determined that there is a potential safety hazard, and the brake module is controlled to perform emergency braking.

8. The elevator car rescue information feedback system based on the Internet of Things according to claim 7 is characterized in that: The brake module corrects the running speed of the standby motor based on the accumulated time length of the sensor identifying each identification code.

9. The elevator car rescue information feedback system based on the Internet of Things according to claim 4 is characterized in that: The analysis module controls the signal output module to send an interactive signal, including: Determine the time point when the interaction signal is sent, and obtain the first interaction feature time point. Determine the time node of receiving the feedback signal of the interaction signal, and obtain the second interaction feature time point, Calculate the feedback duration between the first interaction feature time point and the second interaction feature time point, It is determined whether the transmission of the signal is interfered based on the feedback duration.

10. The elevator car rescue information feedback system based on the Internet of Things according to claim 9, characterized in that: The analysis module determines whether the transmission of the signal is interfered based on the feedback duration, including: Determine that the signal is not interfered with, determine the position of the car based on the position of the identification code recognized by the sensor, and control the signal recognition module to issue a rescue signal prompt, Or, it is determined that no feedback signal is received and the signal is interfered, the position of the car is determined based on the video information of the building monitoring module, and the signal recognition module is controlled to send a rescue signal prompt.

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