CN110110966B

CN110110966B - Well danger early warning method and device, computer equipment and storage medium

Info

Publication number: CN110110966B
Application number: CN201910275504.7A
Authority: CN
Inventors: 张彩霞; 黄立明; 陈刚
Original assignee: Hitachi Building Technology Guangzhou Co Ltd
Current assignee: Hitachi Building Technology Guangzhou Co Ltd
Priority date: 2019-04-08
Filing date: 2019-04-08
Publication date: 2021-10-01
Anticipated expiration: 2039-04-08
Also published as: CN110110966A; WO2020206846A1

Abstract

The invention relates to a method and a device for prewarning well danger, computer equipment and a storage medium, belonging to the technical field of elevators. The method comprises the following steps: if the target object is detected to enter the hoistway, acquiring danger influence factors of the target object; wherein the risk influencing factors comprise at least one of a safety state of the target object, a well intrinsic structure, a tool used for entering the well and a well state; evaluating whether the risk influence factors can cause risk influence on the target object or not to obtain a risk evaluation result; and if the danger evaluation result of any one of the danger influence factors is that the danger influence exists, outputting danger early warning information. Above-mentioned technical scheme has solved the dangerous problem that discovery is untimely of well appears in the dangerous easy appearance of artificial definite well. The device is not easily influenced by human factors, can find the danger of the shaft in time and realize automatic early warning of the danger of the shaft.

Description

Well danger early warning method and device, computer equipment and storage medium

Technical Field

The invention relates to the technical field of elevators, in particular to a method and a device for prewarning well danger, computer equipment and a storage medium.

Background

The well is a space for the elevator to run and consists of a well wall, a pit and a top; in addition, the hoistway comprises structures such as an elevator car, a counterweight, a car top fixing part, hoistway lighting, various switches and the like, and the hoistway is a complex environment. It is particularly susceptible to various safety factors in the hoistway if a person enters the hoistway, such as: being hit by the ceiling fixtures, etc., and therefore requiring special attention for safety.

In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art: personnel often enter the hoistway, for example: maintenance personnel enter elevator car tops, well pit and other positions to perform safe operation, and passengers in the cars open the car top safety windows to enter the well under the self-rescue condition. At present, the possible danger of the hoistway is often determined by a person entering the hoistway, but due to human negligence, distraction and the like, the problem that the danger of the hoistway is not found timely easily occurs, and finally the danger of the hoistway occurs.

Disclosure of Invention

Based on the method, the device, the computer equipment and the storage medium for early warning of the shaft danger, the shaft danger can be found in time, and automatic early warning of the shaft danger is achieved.

The content of the embodiment of the invention is as follows:

on one hand, the embodiment of the invention provides a well danger early warning method, which comprises the following steps: if the target object is detected to enter the hoistway, acquiring danger influence factors of the target object; wherein the risk influencing factors include at least one of a safety state of the target object, a hoistway intrinsic structure, a tool of use entering the hoistway, and a hoistway state; evaluating whether the risk influence factors can cause risk influence on the target object or not to obtain a risk evaluation result; and if the danger evaluation result of any one of the danger influence factors is influenced by danger, outputting danger early warning information.

In one embodiment, the state information of the target object comprises at least one of a breathing state, a heartbeat state, and a safety equipment wearing state.

In an embodiment, if the risk influencing factor is status information of a target object, the risk influencing factor of the target object is obtained; evaluating whether the risk influencing factors can cause risk influence on the target object to obtain a risk evaluation result, wherein the step of evaluating whether the risk influencing factors can cause the risk influence on the target object comprises the following steps: acquiring the breathing state of the target object through a millimeter wave radar; and if the body state of the target object is determined to be not good enough according to the breathing state, determining the danger evaluation result as dangerous influence.

In an embodiment, if the risk influencing factor is status information of a target object, the risk influencing factor of the target object is obtained; evaluating whether the risk influencing factors can cause risk influence on the target object to obtain a risk evaluation result, wherein the step of evaluating whether the risk influencing factors can cause the risk influence on the target object comprises the following steps: acquiring the heartbeat state of the target object through a millimeter wave radar; and if the body state of the target object is determined to be not good enough according to the heartbeat state, determining the danger evaluation result as having danger influence.

In an embodiment, if the risk influencing factor is status information of a target object, the risk influencing factor of the target object is obtained; evaluating whether the risk influencing factors can cause risk influence on the target object to obtain a risk evaluation result, wherein the step of evaluating whether the risk influencing factors can cause the risk influence on the target object comprises the following steps: detecting whether the target object wears safety protection equipment or not through a millimeter wave radar; and if not, determining the danger evaluation result as dangerous influence.

In one embodiment, the hoistway intrinsic structure includes at least one of: the elevator opens and stops switch, sedan-chair top mounting, well projecting part.

In one embodiment, if the risk influencing factor is a well inherent structure, the risk influencing factor of the target object is acquired; evaluating whether the risk influencing factors can cause risk influence on the target object to obtain a risk evaluation result, wherein the step of evaluating whether the risk influencing factors can cause the risk influence on the target object comprises the following steps: if the elevator safety loop is closed, acquiring the state of an elevator start-stop switch; and if the situation that the elevator starting and stopping switch does not act is determined according to the state of the elevator starting and stopping switch, determining the danger evaluation result as dangerous influence.

In one embodiment, if the risk influencing factor is a well inherent structure, the risk influencing factor of the target object is acquired; evaluating whether the risk influencing factors can cause risk influence on the target object to obtain a risk evaluation result, wherein the step of evaluating whether the risk influencing factors can cause the risk influence on the target object comprises the following steps: acquiring a first distance between the car roof fixing piece and the target object through a millimeter wave radar; and if the first distance is smaller than a preset first threshold value, determining the danger evaluation result as dangerous influence.

In one embodiment, if the risk influencing factor is a well inherent structure, the risk influencing factor of the target object is acquired; evaluating whether the risk influencing factors can cause risk influence on the target object to obtain a risk evaluation result, wherein the step of evaluating whether the risk influencing factors can cause the risk influence on the target object comprises the following steps: acquiring a second distance between the shaft protruding piece and the target object through a millimeter wave radar, and acquiring the running speed of the elevator car; determining a probability of the hoistway projection colliding with the target object as a function of the second distance and the travel speed; and if the probability is higher than a preset second threshold value, determining the danger evaluation result as dangerous influence.

In one embodiment, the access hoistway use tool includes at least one of: car top safety window, pit ladder.

In one embodiment, if the risk influencing factor is a tool used for entering a well, the risk influencing factor of the target object is obtained; evaluating whether the risk influencing factors can cause risk influence on the target object to obtain a risk evaluation result, wherein the step of evaluating whether the risk influencing factors can cause the risk influence on the target object comprises the following steps: determining whether the target object enters a shaft way by opening a car top safety window through a millimeter wave radar; if yes, determining the identity of the target object; and when the identity of the target object is a non-professional rescue worker, determining the danger evaluation result as dangerous influence.

In one embodiment, if the risk influencing factor is a tool used for entering a well, the risk influencing factor of the target object is obtained; evaluating whether the risk influencing factors can cause risk influence on the target object to obtain a risk evaluation result, wherein the step of evaluating whether the risk influencing factors can cause the risk influence on the target object comprises the following steps: determining whether the target object enters a shaft pit by using a pit climbing ladder through a millimeter wave radar; and if not, determining the danger evaluation result as dangerous influence.

In one embodiment, if the risk influencing factor is a hoistway state, the risk influencing factor of the target object is acquired; evaluating whether the risk influencing factors can cause risk influence on the target object to obtain a risk evaluation result, wherein the step of evaluating whether the risk influencing factors can cause the risk influence on the target object comprises the following steps: determining whether foreign matters exist in a shaft pit or not through a millimeter wave radar; and if so, determining the danger evaluation result as dangerous influence.

In one embodiment, further comprising: if the indication information that the target object is pre-entered into the car roof is received, detecting the height difference between the elevator car roof and the landing sill by a millimeter wave radar; and when the height difference meets a preset condition, controlling the elevator car to stop running.

In one embodiment, the step of outputting the danger warning information includes: and outputting the danger early warning information through a voice alarm device.

In one embodiment, the step of outputting the danger warning information includes: and controlling the elevator car to stop running.

On the other hand, an embodiment of the present invention provides a shaft danger early warning device, including: the influence factor acquisition module is used for acquiring the danger influence factors of the target object if the target object is detected to enter the hoistway; wherein the risk influencing factors include at least one of a safety state of the target object, a hoistway intrinsic structure, a tool of use entering the hoistway, and a hoistway state; the evaluation result determining module is used for evaluating whether the risk influence factors can cause risk influence on the target object or not to obtain a risk evaluation result; and the early warning information output module is used for outputting the danger early warning information if the danger evaluation result of any one of the danger influencing factors is influenced by danger.

In another aspect, an embodiment of the present invention provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the following steps when executing the computer program: if the target object is detected to enter the hoistway, acquiring danger influence factors of the target object; wherein the risk influencing factors include at least one of a safety state of the target object, a hoistway intrinsic structure, a tool of use entering the hoistway, and a hoistway state; evaluating whether the risk influence factors can cause risk influence on the target object or not to obtain a risk evaluation result; and if the danger evaluation result of any one of the danger influence factors is influenced by danger, outputting danger early warning information.

In yet another aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, the computer program, when executed by a processor, implementing the steps of: if the target object is detected to enter the hoistway, acquiring danger influence factors of the target object; wherein the risk influencing factors include at least one of a safety state of the target object, a hoistway intrinsic structure, a tool of use entering the hoistway, and a hoistway state; evaluating whether the risk influence factors can cause risk influence on the target object or not to obtain a risk evaluation result; and if the danger evaluation result of any one of the danger influence factors is influenced by danger, outputting danger early warning information.

One of the above technical solutions has the following advantages or beneficial effects: when a target object enters a hoistway, a danger evaluation result of danger influencing factors on the target object can be automatically determined, and danger early warning information is output according to the danger evaluation result; the device is not easily influenced by human factors, can find the danger of the shaft in time and realize automatic early warning of the danger of the shaft.

Drawings

Fig. 1 is an application environment diagram of an early warning method for shaft danger in one embodiment;

FIG. 2 is a schematic flow chart illustrating a method for warning of hoistway hazards in one embodiment;

FIG. 3 is a schematic structural diagram of a control system in another embodiment;

fig. 4 is a block diagram of a hoistway hazard warning device in one embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The early warning method for the shaft danger provided by the application can be applied to computer equipment shown in fig. 1. The computer device may be a server or a terminal device, and its internal structure diagram may be as shown in fig. 1. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor is configured to provide computing and control capabilities; the memory comprises a nonvolatile storage medium, an internal memory and a control unit, wherein the nonvolatile storage medium stores an operating system, a computer program (the computer program realizes a shaft danger early warning method when being executed by the processor) and a database, and the internal memory provides an environment for the operating system and the computer program in the nonvolatile storage medium to run; the database is used for storing data such as risk influence factors, risk evaluation results and the like; the network interface is used for communicating with an external terminal through network connection, such as: and the detection device is connected with the millimeter wave radar and receives detection information sent by the millimeter wave radar.

Those skilled in the art will appreciate that the architecture shown in fig. 1 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.

In addition, the computer device may be implemented by a terminal or a server. The terminal can be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers and portable wearable devices, and the server can be implemented by an independent server or a server cluster formed by a plurality of servers.

The embodiment of the invention provides a method and a device for early warning of shaft danger, computer equipment and a storage medium. The following are detailed below.

In one embodiment, as shown in fig. 2, a method of early warning of hoistway hazards is provided. Taking the example that the method is applied to the computer device in fig. 1 as an example, the method comprises the following steps:

s201, if the target object is detected to enter the hoistway, acquiring danger influence factors of the target object; wherein the danger influencing factor includes at least one of state information of the target object, a hoistway intrinsic structure, a tool used for entering the hoistway, and a hoistway state.

The target object refers to a person entering the elevator shaft area (for example, a maintenance worker and the like, and the target object is also referred to as an operator in the following description), and in some cases, the target object may also refer to an animal and the like; meanwhile, the target objects can be one, two or even more. The target object entering the shaft can mean to reach the shaft pit, the car roof and other positions; further, when the target object enters different positions, the corresponding risk influencing factors may be different.

The risk influencing factor refers to a factor that may pose a safety threat to a target object entering the hoistway. Further, the state information of the target object may refer to a physical state, work dressing, and the like of the target object; the shaft inherent structure refers to a structure arranged in an elevator shaft, and since a target object moves in the elevator shaft, the shaft inherent structure is likely to be touched to pose a safety threat to the target object, so that the shaft inherent structure needs to be summarized into a dangerous influence factor; because there may be elevator up and down running in the well, so, need to enter the well through the specialized passway through the specialized tool, if enter the way of the well and is not satisfactory then very likely to have a safety accident, therefore it is necessary to conclude the use tool entering the well also to the dangerous influence factor; the hoistway state refers to a state of an elevator hoistway, and may refer to humidity, temperature, presence or absence of foreign matter (e.g., standing water, garbage), and the like of the hoistway.

S202, evaluating whether the risk influence factors can cause risk influence on the target object or not to obtain a risk evaluation result.

Wherein, the risk assessment result may refer to whether the risk influencing factor may threaten the safety of the target object (e.g., no risk, risk); it may further refer to a degree of dangerous influence, such as a specific probability of influence. When the elevator, the target object and the like are in different states, the danger evaluation results of the danger influencing factors on the target object may be different, and therefore, the danger evaluation results of the danger influencing factors on the target object are determined in the step. The evaluation process in S202 may be implemented according to a preset corresponding relationship, for example: establishing a connection relation between the 'non-wearing safety helmet' and the 'dangerous influence', wherein if the target object is determined not to wear the safety helmet, the dangerous evaluation result can be directly determined as dangerous; it may also be determined from the actual conditions of the risk influencing factors, for example: and judging whether the car top fixing piece has the possibility of colliding with the target object positioned on the car top or not in the running process of the elevator car, and if so, determining the danger evaluation result as dangerous.

Further, the implementation process of determining the risk assessment result of each risk influencing factor on the target object may be: if the body state of the target object is not good, the inherent structure of the shaft collides with the target object, or the shaft state is not suitable for the target object to stay in the shaft, the safety of the target object can be considered to be threatened, and the danger evaluation result is determined to be influenced by danger. If the risk influencing factors do not have safety threats to the target object, the risk assessment result can be determined to be free of risk influence, and when the risk assessment result corresponding to each risk influencing factor is free of risk influence, the risk early warning information cannot be output.

S203, if the danger evaluation result of any danger influence factor is influenced by danger, outputting danger early warning information.

When the danger evaluation result is that there is a danger influence, it indicates that the safety of the target object is likely to be threatened, and therefore it is necessary to output danger warning information to the target object, elevator management personnel, and the like to instruct them to perform danger handling. For the target object, the target object can be instructed to stop making corresponding dangerous actions or to evacuate the shaft immediately; for the elevator management personnel, the elevator management personnel can be instructed to carry out the operations of elevator stopping operation, fault maintenance, calling medical personnel and the like.

Specifically, outputting the danger warning information may be implemented by sending information to the warning terminal. The early warning terminal can be a broadcast, a computer, a mobile phone, an interphone (which can be connected with a property management center) and the like, and can inform related personnel in the modes of voice, characters, patterns and the like. Further, the step of outputting the danger early warning information includes: outputting danger early warning information through a voice warning device (broadcasting and the like); or controlling the elevator car to stop running. Related personnel can be reminded through the voice alarm device, and if the related personnel do not timely perform operation for avoiding danger, the elevator car can be controlled to stop running.

In the embodiment, when a target object enters a hoistway, a danger evaluation result of a danger influence factor on the target object can be automatically determined, and danger early warning information is output according to the danger evaluation result; the danger of the well can be found in time, and the automatic early warning of the danger of the well is realized.

For ease of understanding, the millimeter wave radar is explained below:

millimeter waves refer to electromagnetic waves having a wavelength from 10 to 1 millimeter and a frequency from 30 to 300 gigahertz (GHz), with at least the following advantages:

1) the beam is narrow. The beam of millimeter waves is much narrower than the beam of microwaves for the same antenna size. For example, for a 12cm antenna, the beam width is 18 degrees at 9.4GHz and the wave speed width is only 1.8 degrees at 94 GHz. Thus, small objects that are closer together can be resolved or the details of the objects viewed more clearly. Can be used for detecting weak signals of human body such as respiration, heartbeat, pulse and the like.

2) The detection capability is strong. A broad spectrum of bandwidth capability can be utilized to suppress multipath effects and clutter. A large number of frequencies are available, and mutual interference is effectively eliminated. Under the target radial velocity, larger Doppler frequency shift can be obtained, so that the detection and identification capability of a low-speed moving object or a vibrating object is improved. Particularly in the application scene of the elevator, the method can be used for detecting whether a moving object (such as a human) appears in a certain area, the moving direction of the moving object, and the like. Millimeter wave radar can be used to detect the speed of and relative to a target, as well as the presence of particular objects (water, debris, safety helmets, etc.).

Based on the above advantages of millimeter wave radar, can use it in the dangerous early warning of elevator well. The millimeter wave radar can be installed on the top of the shaft (detecting the state of the whole shaft), the bottom pit of the shaft, the top of the car (detecting the behavior and physiological characteristic information of the working personnel on the top of the car), the bottom of the car, the side wall of the shaft and the like. The millimeter wave radar can be used for acquiring relevant information of the danger influencing factor, and the relevant information can be acquired through the millimeter wave radar nearby according to the content of the danger influencing factor. The specific early warning method for the hoistway danger is illustrated by the following embodiments:

in one embodiment, the state information of the target object includes at least one of a breathing state, a heartbeat state, a state of wearing safety equipment. The breathing state may refer to the breathing frequency, the breathing intensity, and the like of the target object, and may also include the breathing position of the target object (specifically, the position of the mouth and the nose); the heartbeat state may refer to a heart rate and the like, and may also include a position of a heart beat (specifically, may refer to a position of a heart); the wearing state of the safety protection equipment can be whether the target object wears related safety protection equipment or not, whether the wearing mode of the safety protection equipment meets the requirement or not and the like; the safety protection equipment can be a safety helmet, a safety suit, a mask and the like.

In one embodiment, if the risk influencing factor is the state information of the target object, S201 and S202 include: the breathing state of a target object is obtained through a millimeter wave radar (which can be arranged on the top of an elevator car and the like); and if the body state of the target object is determined to be not good enough according to the breathing state, determining the danger evaluation result as dangerous influence. S201 and S202 may also include: acquiring the heartbeat state of a target object through a millimeter wave radar (which can be arranged at the top of an elevator car and the like); and if the body state of the target object is determined to be not good enough according to the heartbeat state, determining the danger evaluation result as having danger influence. Since the millimeter wave radar beam is narrow, very minute details can be detected, and thus it can be applied to detecting the breathing state and the heartbeat state of the target object. After determining the breathing state and the heartbeat state of the target subject, it can be determined whether the target subject is physically poor by comparing them with the standard breathing information/heartbeat information. Furthermore, after the target object is determined to be poor in body, the danger evaluation result is judged to be influenced by danger, the target object can be reminded to pay attention to relieve emotion or stop working to evacuate from a well, and wrong operation is avoided; when the respiration is particularly weak or in severe conditions such as sudden respiration, the danger evaluation result is judged to be influenced by danger, and at the moment, an alarm can be actively sent out to inform related personnel of assistance.

In addition, whether the target object has abnormal actions or not can be monitored through the millimeter wave radar, and corresponding early warning processing is carried out. For example, if the heart position of the target object is detected to be close to the car roof through the millimeter wave radar and the heartbeat is accelerated, it can be determined that the target object falls down on the car roof; if the target object is further judged to be not smooth in movement and the danger evaluation result is judged to be influenced by danger, alarm information can be sent to the terminal platform, so that monitoring and protection of abnormal conditions of the operating personnel are achieved, and personal safety of the operating personnel is guaranteed.

In one embodiment, if the risk influencing factor is the state information of the target object, S201 and S202 may further include: whether a target object wears safety protection equipment is detected through a millimeter wave radar (which can be arranged at the top of an elevator car, the bottom of the elevator car, the top of a well, a well pit and the like); and if not, determining the danger evaluation result as dangerous influence. When the target object is determined not to wear the safety protection equipment, a warning is given through a voice alarm device arranged in the well, and the target object is prompted to wear the safety protection equipment.

According to the embodiment, the danger which may occur in the hoistway is determined by detecting the state information of the target object, corresponding early warning operation is performed when the danger is likely to occur, the danger which may be suffered by the target object can be timely and effectively found, the safety of the target object is ensured, and meanwhile, the treatment can be timely provided for the operating personnel when the safety threat occurs.

In one embodiment, the hoistway intrinsic structure includes any one of: the elevator opens and stops switch, sedan-chair top mounting, well projecting part.

Wherein, the elevator opens and stops the switch that the switch refers to the control elevator and opens and stop, can include: a car top emergency stop switch and an overhaul switch; in the event that the safety circuit is closed (e.g., the hoistway doors are closed), the operator is required to depress these switches, which if not, could present a safety risk alert. Further, if the dangerous influence factor is an elevator start-stop switch, S201 and S202 include: if the elevator safety loop is closed, acquiring the state of an elevator start-stop switch; and if the elevator starting and stopping switch is determined to be not actuated (not pressed down) according to the state of the elevator starting and stopping switch, determining the danger evaluation result as dangerous influence.

The ceiling fixing member refers to a member provided on the ceiling for fixing the elevator car, and may collide with a target object during the operation of the elevator. Further, if the danger-affecting factor is a car roof fixing member, S201 and S202 include: acquiring a first distance between a car top fixing piece and a target object through a millimeter wave radar (which can be arranged at the positions of an elevator car top and the like); and if the first distance is smaller than a preset first threshold value, determining the danger evaluation result as dangerous influence. The first distance and the first threshold may be determined according to actual conditions, which is not limited in this embodiment of the present invention. When the target object operates on the elevator car top, the operation track of an operator is tracked and detected in real time through the millimeter wave radar, the operation trend is judged, and warning is given to whether collision of the car top fixing piece is possible or not, so that the operator can observe the surrounding environment with care, and accidental collision is avoided.

The shaft protruding part may refer to a part disposed on and protruding from a shaft side wall, and may collide with a target object during an elevator operation. If the hazard influencing factor is a hoistway protruding member, S201 and S202 may include: when the elevator is in a slow car maintenance state and a target object is on the top of the elevator car, acquiring the position of a body part (head, hand and the like) of the target object (which can be realized by a millimeter wave radar); if the target object is determined to be stretched out of the car top protective guard according to the position of the body part, acquiring a second distance between the shaft protruding part and the target object through a millimeter wave radar (which can be arranged at the top of the shaft and the like), and acquiring the running speed of the elevator car; determining a probability of the hoistway projection colliding with the target object based on the second distance and the travel speed; and if the probability is higher than a preset second threshold value, determining the danger evaluation result as dangerous influence. In addition, the time at which a collision may occur may also be calculated, and the risk assessment results may be determined as having a dangerous impact when the collision time approaches. Wherein the second distance may include a vertical distance and a horizontal distance, and the second threshold may be set to a distance required to stop the elevator at the current speed plus a certain margin. Sometimes, when the hoistway component is checked, two persons are required to cooperate with each other to perform the operation control of the elevator, and one person performs the check, wherein the body part of the person performing the check needs to extend out of the car roof guard rail, but the person is careless or distracted, so that the person performing the check can be collided by the hoistway protruding part. In this case, the distance between the person who is performing the hoistway component inspection and the hoistway protruding member may be detected in real time by the millimeter wave radar, and the probability of collision is determined, and the computer device performs risk reminding when a collision is likely to occur, and reminds the target object to adjust the body posture or return to the protection area inside the car roof guard rail to prevent collision with the hoistway protruding member. If the target object does not act after the reminder and the elevator is still running, the computer device can stop the elevator, eliminating the risk of accidents.

In the embodiment, the inherent structure of the hoistway is used as a dangerous influence factor to determine the danger of the target object in the hoistway, and corresponding early warning operation is performed when the danger is possible, so that the danger possibly suffered by the target object can be timely and effectively found, and the safety of the target object is ensured.

In one embodiment, the tool for use in accessing the hoistway includes at least one of: car top safety window, pit ladder.

The car top safety window is often only used by professional rescue personnel, and if a common passenger opens the safety window, the danger of falling into a hoistway may occur. At that time, when the elevator took place the scram because abnormal conditions (for example have a power failure), the passenger probably opened the sedan-chair top safety window in the sedan-chair and saves oneself, just can come the state of real-time detection sedan-chair top safety window through the millimeter wave radar under this condition to carry out early warning when the passenger opened sedan-chair top safety window by oneself and handle. Further, if the risk influencing factor is the car roof safety window, S201 and S202 include: whether a target object enters a shaft by opening a car top safety window is determined through a millimeter wave radar (which can be arranged at the position of a car top of an elevator and the like); if yes, determining the identity of the target object; and when the identity of the target object is a non-professional rescue worker, determining the danger evaluation result as dangerous influence. The computer equipment sends prompt warning information through the early warning terminal to prompt non-professional rescue workers not to open the safety window and climb out of the lift car through the safety window, and prompt passengers to wait for rescue in the elevator; the risk of falling into the well due to self rescue is avoided.

Wherein, personnel get into the pit generally need use the pit cat ladder, if the user just gets into the well without using the cat ladder, says its misoperation, probably appears dangerously. If the risk influencing factor is the inherent structure of the shaft (pit ladder), S201 and S202 include: whether a target object enters a shaft pit by using a pit climbing ladder is determined by a millimeter wave radar (which can be arranged at a shaft pit and the like); and if not, determining the danger evaluation result as dangerous influence.

In the embodiment, the using tool entering the hoistway is used as a danger influencing factor to determine the way of the target object entering the hoistway, and corresponding early warning operation is performed when the way is unreasonable, so that the danger possibly suffered by the target object can be timely and effectively found, and the safety of the target object is ensured.

In one embodiment, if the dangerous influence factor is a hoistway state, S201 and S202 include: whether foreign matters exist in a shaft pit or not is determined through a millimeter wave radar (which can be arranged at the shaft pit and the like); and if so, determining the danger evaluation result as dangerous influence. The foreign matters in the pit can be accumulated water, garbage and the like. The shaft danger early warning method provided by the embodiment can prompt operators to pay attention to safety in time when detecting that foreign matters exist in the pit.

In one embodiment, after the step of detecting that the target object enters the hoistway, the method further comprises: sending a starting instruction to an illumination device (an illuminating lamp and the like); the start instruction is used for controlling the lighting device to be turned on. The lighting device can be lighting devices at various positions in the hoistway, and the lighting device close to the target object can be controlled to be turned on according to the position of the target object. According to the early warning method for the shaft danger provided by the embodiment, when the millimeter wave radar detects that the target object enters the shaft, the lighting device is controlled to be automatically turned on, so that the operation personnel can conveniently and safely enter the shaft. When there is no target object in the hoistway, the lighting device may be turned off, for example: and when no person is near the car roof or the car roof area, controlling the lighting of the car roof to be turned off.

In one embodiment, further comprising: if the indication information that the target object is pre-entered into the car roof is received, detecting the height difference between the elevator car roof and the landing sill by a millimeter wave radar; and when the height difference meets a preset condition, controlling the elevator car to stop running. Before an operator enters the car roof for operation, the elevator needs to be stopped at a proper position so as to safely and smoothly enter the car, at the moment, the height difference between the car roof and the landing sill of the elevator needs to be determined, in the past, the operator views the stopping position of the car for many times to determine, and therefore the workload is increased for the operator. In the embodiment, the millimeter wave radar can give the height of the distance between the car roof and the pre-entering layer sill in real time, so that the operators are prevented from confirming back and forth, and the workload of the operators is effectively simplified. The computer equipment can monitor the state of the operating personnel in real time through the millimeter wave radar after the elevator stops running, acquire corresponding danger influencing factors after the operating personnel enter the hoistway, and output danger early warning information according to danger evaluation results of the danger influencing factors.

In one embodiment, if the target object is located in a hoistway pit, the millimeter wave radar can also monitor the distance between the elevator and the pit and output danger early warning information when the distance is too small, so that damage to operators due to sudden starting of the elevator is avoided.

In order to better understand the above method, an application example of the method for warning the shaft danger according to the present invention is described in detail below.

Two millimeter wave radars are installed in the hoistway: the millimeter wave radar 1 is installed at the top of the hoistway to detect the state of the whole hoistway; the millimeter wave radar 2 is installed on the ceiling of the elevator to detect behavior and physiological characteristic information of the worker (for determining status information of the worker).

The millimeter wave radar 1 monitors the state of the well in real time, and when it is determined that a person enters the well during operation, the position of the operator is determined, the danger influence factors of the operator are determined, and then the danger evaluation result of the corresponding danger influence factors on the operator is determined. The following description is given by taking the case where the operator is located on the top of the elevator car as an example (this application example can be realized by the control system shown in fig. 3):

1) acquiring the breathing state of an operator through a millimeter wave radar 2; if the main controller determines that the breathing of the operator is particularly weak according to the breathing state obtained by the millimeter wave radar 2, determining the danger evaluation result as having danger influence; and actively sending an alarm to the terminal platform to inform related personnel of assistance.

2) Acquiring the distance between the car roof fixing piece and the operation target personnel through a millimeter wave radar 2; when the distance is less than 10m, the main controller determines the danger evaluation result as dangerous influence; and the car top voice alarm device gives an alarm to avoid accidental collision.

3) When the elevator is in a slow car maintenance state, if the head of an operator is determined to be stretched out of the car top protective guard by the main controller according to the information monitored by the millimeter wave radar 2; the vertical distance between the shaft protruding piece and an operator is obtained through the millimeter wave radar 1, and the running speed of the elevator car is obtained. The main controller determines the probability of the well protruding member colliding the worker according to the vertical distance and the running speed; when the probability is higher than 80%, determining the danger evaluation result as dangerous influence; and risk reminding is carried out through the car top voice alarm device, and an operator is reminded to return to a protection area to prevent collision with a protruding part of the shaft way.

In the embodiment, when a target object enters a hoistway, a danger evaluation result of a danger influence factor on the target object can be automatically determined, and danger early warning information is output according to the danger evaluation result; the device is not easily influenced by human factors, can timely find the danger of the shaft, realizes automatic early warning of the danger of the shaft, and can effectively ensure the safety of a target object entering the shaft.

It should be noted that, for the sake of simplicity, the foregoing method embodiments are described as a series of acts or combinations, but those skilled in the art should understand that the present invention is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present invention.

Based on the same idea as the shaft danger early warning method in the embodiment, the invention also provides a shaft danger early warning device which can be used for executing the shaft danger early warning method. For convenience of explanation, in the schematic structural diagram of the embodiment of the hoistway danger warning device, only the part related to the embodiment of the present invention is shown, and those skilled in the art will understand that the illustrated structure does not constitute a limitation to the device, and may include more or less components than those illustrated, or combine some components, or arrange different components.

As shown in fig. 4, the hoistway danger warning device includes an influencing factor obtaining module 401, an evaluation result determining module 402, and a warning information output module 403, which are described in detail as follows:

the influence factor acquiring module 401 is configured to acquire a risk influence factor of the target object if it is detected that the target object enters the hoistway; wherein the danger influencing factor includes at least one of state information of the target object, a hoistway intrinsic structure, a tool used for entering the hoistway, and a hoistway state.

And the evaluation result determining module 402 is configured to evaluate whether the risk influencing factor may cause a risk influence on the target object, so as to obtain a risk evaluation result.

And an early warning information output module 403, configured to output the danger early warning information if the danger assessment result of any one of the danger influencing factors is that there is a danger influence.

In the embodiment, when a target object enters a hoistway, a danger evaluation result of a danger influence factor on the target object can be automatically determined, and danger early warning information is output according to the danger evaluation result; the device is not easily influenced by human factors, can find the danger of the shaft in time and realize automatic early warning of the danger of the shaft.

In one embodiment, the state information of the target object includes at least one of a breathing state, a heartbeat state, a state of wearing safety equipment.

In one embodiment, if the risk influencing factor is the state information of the target object, the early warning device for the shaft risk includes: the breath evaluation module is used for acquiring the breath state of the target object through the millimeter wave radar; and if the body state of the target object is determined to be not good enough according to the breathing state, determining the danger evaluation result as dangerous influence.

In one embodiment, if the risk influencing factor is the state information of the target object, the early warning device for the shaft risk includes: the heartbeat evaluation module is used for acquiring the heartbeat state of the target object through the millimeter wave radar; and if the body state of the target object is determined to be not good enough according to the heartbeat state, determining the danger evaluation result as having danger influence.

In one embodiment, if the risk influencing factor is the state information of the target object, the early warning device for the shaft risk includes: the safety helmet evaluation module is used for detecting whether the target object wears safety protection equipment or not through a millimeter wave radar; and if not, determining the danger evaluation result as dangerous influence.

In one embodiment, if the danger influencing factor is the inherent structure of the well, the early warning device for the well danger comprises: the starting and stopping switch evaluation module is used for acquiring the state of the starting and stopping switch of the elevator if the safety loop of the elevator is closed; and if the situation that the elevator starting and stopping switch does not act is determined according to the state of the elevator starting and stopping switch, determining the danger evaluation result as having danger influence.

In one embodiment, if the danger influencing factor is the inherent structure of the well, the early warning device for the well danger comprises: the fixed part evaluation module is used for acquiring a first distance between the car roof fixed part and a target object through a millimeter wave radar; and if the first distance is smaller than a preset first threshold value, determining the danger evaluation result as dangerous influence.

In one embodiment, if the danger influencing factor is the inherent structure of the well, the early warning device for the well danger comprises: the protruding part evaluation module is used for acquiring a second distance between the shaft protruding part and the target object through a millimeter wave radar and acquiring the running speed of the elevator car; determining a probability of the hoistway projection colliding with the target object based on the second distance and the travel speed; and if the probability is higher than a preset second threshold value, determining the danger evaluation result as dangerous influence.

In one embodiment, if the hazard influencing factor is a tool used to enter the hoistway, the hoistway hazard warning device comprises: the safety window evaluation module is used for determining whether a target object enters the shaft by opening the car top safety window through the millimeter wave radar; if yes, determining the identity of the target object; and when the identity of the target object is a non-professional rescue worker, determining the danger evaluation result as dangerous influence.

In one embodiment, if the hazard influencing factor is a tool used to enter the hoistway, the hoistway hazard warning device comprises: the ladder climbing evaluation module is used for determining whether a target object enters a well pit by using a pit ladder climbing; and if not, determining the danger evaluation result as dangerous influence.

In one embodiment, if the danger-affecting factor is a hoistway state, the hoistway danger warning device includes: the pit foreign matter evaluation module is used for determining whether foreign matters exist in a pit of the shaft through a millimeter wave radar; and if so, determining the danger evaluation result as dangerous influence.

In one embodiment, a hoistway hazard warning device includes: the height detection module is used for detecting the height difference between the elevator car top and the landing sill through a millimeter wave radar if the indication information that the target object is pre-entered into the car top is received; and when the height difference meets a preset condition, controlling the elevator car to stop running.

In one embodiment, the warning information output module 403 is further configured to output the danger warning information through a voice alarm device.

In one embodiment, the warning information output module 403 is also used to control the elevator car to stop running.

It should be noted that the hoistway danger early warning device of the present invention corresponds to the hoistway danger early warning method of the present invention one to one, and the technical features and the beneficial effects described in the embodiment of the hoistway danger early warning method are all applicable to the embodiment of the hoistway danger early warning device, and specific contents may refer to the description in the embodiment of the hoistway danger early warning method of the present invention, and are not described herein again, and thus the present invention is declared.

In addition, in the embodiment of the hoistway danger warning device in the above example, the logical division of the program modules is only an example, and in practical applications, the above functions may be allocated by different program modules according to needs, for example, due to the configuration requirements of corresponding hardware or the convenience of implementation of software, that is, the internal structure of the hoistway danger warning device is divided into different program modules to complete all or part of the above described functions.

In one embodiment, a computer device is provided, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program: if the target object is detected to enter the hoistway, acquiring danger influence factors of the target object; wherein the risk influencing factors comprise at least one of a safety state of the target object, a well intrinsic structure, a tool used for entering the well and a well state; evaluating whether the risk influence factors can cause risk influence on the target object or not to obtain a risk evaluation result; and if the danger evaluation result of any one of the danger influence factors is that the danger influence exists, outputting danger early warning information.

In one embodiment, if the risk influencing factor is the state information of the target object, the processor executes the computer program to further implement the following steps: acquiring the breathing state of a target object through a millimeter wave radar; and if the body state of the target object is determined to be not good enough according to the breathing state, determining the danger evaluation result as dangerous influence.

In one embodiment, if the risk influencing factor is the state information of the target object, the processor executes the computer program to further implement the following steps: acquiring the heartbeat state of a target object through a millimeter wave radar; and if the body state of the target object is determined to be not good enough according to the heartbeat state, determining the danger evaluation result as having danger influence.

In one embodiment, if the risk influencing factor is the state information of the target object, the processor executes the computer program to further implement the following steps: detecting whether a target object wears safety protection equipment or not through a millimeter wave radar; and if not, determining the danger evaluation result as dangerous influence.

In one embodiment, if the hazard influencing factor is the inherent structure of the hoistway, the processor when executing the computer program further performs the steps of: if the elevator safety loop is closed, acquiring the state of an elevator start-stop switch; if the elevator safety loop is closed, acquiring the state of an elevator start-stop switch; and if the situation that the elevator starting and stopping switch does not act is determined according to the state of the elevator starting and stopping switch, determining the danger evaluation result as having danger influence.

In one embodiment, if the hazard influencing factor is the inherent structure of the hoistway, the processor when executing the computer program further performs the steps of: acquiring a first distance between the car roof fixing piece and a target object through a millimeter wave radar; and if the first distance is smaller than a preset first threshold value, determining the danger evaluation result as dangerous influence.

In one embodiment, if the hazard influencing factor is the inherent structure of the hoistway, the processor when executing the computer program further performs the steps of: acquiring a second distance between the shaft protruding part and the target object through a millimeter wave radar, and acquiring the running speed of the elevator car; determining a probability of the hoistway projection colliding with the target object based on the second distance and the travel speed; and if the probability is higher than a preset second threshold value, determining the danger evaluation result as dangerous influence.

In one embodiment, if the hazard affecting factor is a tool in use entering the hoistway, the processor when executing the computer program further performs the steps of: determining whether a target object enters a shaft way by opening a car top safety window through a millimeter wave radar; if yes, determining the identity of the target object; and when the identity of the target object is a non-professional rescue worker, determining the danger evaluation result as dangerous influence.

In one embodiment, if the hazard affecting factor is a tool in use entering the hoistway, the processor when executing the computer program further performs the steps of: determining whether a target object enters a well pit by using a pit climbing ladder or not through a millimeter wave radar; and if not, determining the danger evaluation result as dangerous influence.

In one embodiment, if the hazard affecting factor is a hoistway condition, the processor when executing the computer program further performs the steps of: determining whether foreign matters exist in a shaft pit or not through a millimeter wave radar; and if so, determining the danger evaluation result as dangerous influence.

In one embodiment, the processor, when executing the computer program, further performs the steps of: if the indication information that the target object is pre-entered into the car roof is received, detecting the height difference between the elevator car roof and the landing sill by a millimeter wave radar; and when the height difference meets a preset condition, controlling the elevator car to stop running.

In one embodiment, the processor, when executing the computer program, further performs the steps of: and outputting danger early warning information through a voice warning device.

In one embodiment, the processor, when executing the computer program, further performs the steps of: and controlling the elevator car to stop running.

In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of: if the target object is detected to enter the hoistway, acquiring danger influence factors of the target object; wherein the risk influencing factors comprise at least one of a safety state of the target object, a well intrinsic structure, a tool used for entering the well and a well state; evaluating whether the risk influence factors can cause risk influence on the target object or not to obtain a risk evaluation result; and if the danger evaluation result of any one of the danger influence factors is that the danger influence exists, outputting danger early warning information.

In one embodiment, if the risk influencing factor is status information of the target object, the computer program when executed by the processor further performs the steps of: acquiring the breathing state of a target object through a millimeter wave radar; and if the body state of the target object is determined to be not good enough according to the breathing state, determining the danger evaluation result as dangerous influence.

In one embodiment, if the risk influencing factor is status information of the target object, the computer program when executed by the processor further performs the steps of: acquiring the heartbeat state of a target object through a millimeter wave radar; and if the body state of the target object is determined to be not good enough according to the heartbeat state, determining the danger evaluation result as having danger influence.

In one embodiment, if the risk influencing factor is status information of the target object, the computer program when executed by the processor further performs the steps of: detecting whether a target object wears safety protection equipment or not through a millimeter wave radar; and if not, determining the danger evaluation result as dangerous influence.

In one embodiment, if the hazard affecting factor is a hoistway intrinsic structure, the computer program when executed by the processor further performs the steps of: if the elevator safety loop is closed, acquiring the state of an elevator start-stop switch; if the elevator safety loop is closed, acquiring the state of an elevator start-stop switch; and if the situation that the elevator starting and stopping switch does not act is determined according to the state of the elevator starting and stopping switch, determining the danger evaluation result as having danger influence.

In one embodiment, if the hazard affecting factor is a hoistway intrinsic structure, the computer program when executed by the processor further performs the steps of: acquiring a first distance between the car roof fixing piece and a target object through a millimeter wave radar; and if the first distance is smaller than a preset first threshold value, determining the danger evaluation result as dangerous influence.

In one embodiment, if the hazard affecting factor is a hoistway intrinsic structure, the computer program when executed by the processor further performs the steps of: acquiring a second distance between the shaft protruding part and the target object through a millimeter wave radar, and acquiring the running speed of the elevator car; determining a probability of the hoistway projection colliding with the target object based on the second distance and the travel speed; and if the probability is higher than a preset second threshold value, determining the danger evaluation result as dangerous influence.

In one embodiment, if the risk-affecting factor is a tool-of-use entering the hoistway, the computer program when executed by the processor further performs the steps of: determining whether a target object enters a shaft way by opening a car top safety window through a millimeter wave radar; if yes, determining the identity of the target object; and when the identity of the target object is a non-professional rescue worker, determining the danger evaluation result as dangerous influence.

In one embodiment, if the risk-affecting factor is a tool-of-use entering the hoistway, the computer program when executed by the processor further performs the steps of: determining whether a target object enters a well pit by using a pit climbing ladder or not through a millimeter wave radar; and if not, determining the danger evaluation result as dangerous influence.

In one embodiment, if the hazard affecting factor is hoistway status, the computer program when executed by the processor further performs the steps of: determining whether foreign matters exist in a shaft pit or not through a millimeter wave radar; and if so, determining the danger evaluation result as dangerous influence.

It will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program, which is stored in a computer readable storage medium and sold or used as a stand-alone product. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

The terms "comprises" and "comprising," and any variations thereof, of embodiments of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or (module) elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-described examples merely represent several embodiments of the present invention and should not be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A well danger early warning method is characterized in that a millimeter wave radar 1 is installed at the top of a well to detect the state of the whole well; the millimeter wave radar 2 is arranged on the top of the elevator car to detect behavior and physiological characteristic information of operators; the method comprises the following steps:

if the indication information that the target object is pre-entered into the car roof is received, detecting the height difference between the elevator car roof and the landing sill by a millimeter wave radar; when the height difference meets a preset condition, controlling the elevator car to stop running; the target object comprises an operator;

if the millimeter wave radar 1 detects that a target object enters a hoistway, acquiring danger influence factors of the target object; wherein the danger influencing factors include at least one of state information of the target object, inherent structure of the shaft, a tool used for entering the shaft and shaft state;

evaluating whether the risk influence factors can cause risk influence on the target object or not to obtain a risk evaluation result;

if the danger evaluation result of any danger influence factor is influenced by danger, outputting danger early warning information;

when the operator is located on the top of the elevator car, the method comprises the following steps:

acquiring the breathing state of an operator through a millimeter wave radar 2; if the breathing of the operator is determined to be particularly weak according to the breathing state obtained by the millimeter wave radar 2, determining the danger evaluation result as dangerous influence;

acquiring a first distance between the car roof fixing piece and an operator through a millimeter wave radar 2; when the first distance is smaller than a preset first threshold value, determining the danger evaluation result as dangerous influence;

when the elevator is in a slow car maintenance state, if the head of an operator is determined to extend out of the car top protective guard according to the information monitored by the millimeter wave radar 2; acquiring the vertical distance between a shaft protruding piece and an operator through a millimeter wave radar 1, and acquiring the running speed of an elevator car; determining a probability of the well projection colliding the worker based on the vertical distance and the travel speed; and when the probability is higher than a preset second threshold value, determining the danger evaluation result as dangerous influence.

2. The method for warning the danger in the shaft according to claim 1, wherein the state information of the target object comprises at least one of a heartbeat state and a state of wearing safety protection equipment;

if the danger influence factor is the state information of the target object, acquiring the danger influence factor of the target object; evaluating whether the risk influencing factors can cause risk influence on the target object to obtain a risk evaluation result, wherein the step of evaluating whether the risk influencing factors can cause the risk influence on the target object comprises the following steps:

acquiring the heartbeat state of the target object through a millimeter wave radar; if the body state of the target object is determined to be not good enough according to the heartbeat state, determining the danger evaluation result as having danger influence;

and/or the presence of a gas in the gas,

detecting whether the target object wears safety protection equipment or not through a millimeter wave radar; and if not, determining the danger evaluation result as dangerous influence.

3. The method of claim 2, wherein the hoistway intrinsic structure comprises at least one of: the elevator starting and stopping switch, the car top fixing part and the hoistway protruding part are arranged on the elevator car body;

if the danger influencing factor is the inherent structure of the well, acquiring the danger influencing factor of the target object; evaluating whether the risk influencing factors can cause risk influence on the target object to obtain a risk evaluation result, wherein the step of evaluating whether the risk influencing factors can cause the risk influence on the target object comprises the following steps:

if the elevator safety loop is closed, acquiring the state of an elevator start-stop switch; and if the situation that the elevator starting and stopping switch does not act is determined according to the state of the elevator starting and stopping switch, determining the danger evaluation result as dangerous influence.

4. The method of claim 1, wherein the tool used to enter the hoistway comprises at least one of: a car top safety window and a pit ladder;

if the danger influencing factor is a tool entering a well, acquiring the danger influencing factor of the target object; evaluating whether the risk influencing factors can cause risk influence on the target object to obtain a risk evaluation result, wherein the step of evaluating whether the risk influencing factors can cause the risk influence on the target object comprises the following steps:

determining whether the target object enters a shaft way by opening a car top safety window through a millimeter wave radar; if yes, determining the identity of the target object; when the identity of the target object is a non-professional rescue worker, determining the danger evaluation result as dangerous influence;

and/or the presence of a gas in the gas,

determining whether the target object enters a shaft pit by using a pit climbing ladder through a millimeter wave radar; and if not, determining the danger evaluation result as dangerous influence.

5. The method for prewarning a hoistway hazard according to claim 1, wherein if the hazard influencing factor is a hoistway state, the hazard influencing factor of the target object is obtained; evaluating whether the risk influencing factors can cause risk influence on the target object to obtain a risk evaluation result, wherein the step of evaluating whether the risk influencing factors can cause the risk influence on the target object comprises the following steps:

determining whether foreign matters exist in a shaft pit or not through a millimeter wave radar; and if so, determining the danger evaluation result as dangerous influence.

6. The method for warning the danger in the hoistway according to any one of claims 1 to 5, wherein the step of outputting the danger warning information includes:

and outputting the danger early warning information through a voice alarm device.

7. The method for warning the danger in the hoistway according to any one of claims 1 to 5, wherein the step of outputting the danger warning information includes:

and controlling the elevator car to stop running.

8. A dangerous early warning device of well, wherein, the millimeter wave radar 1 is installed on the top of well, in order to detect the state of the whole well; the millimeter wave radar 2 is arranged on the top of the elevator car to detect behavior and physiological characteristic information of operators; the method comprises the following steps:

a module that performs the steps of: if the indication information that the target object is pre-entered into the car roof is received, detecting the height difference between the elevator car roof and the landing sill by a millimeter wave radar; when the height difference meets a preset condition, controlling the elevator car to stop running; the target object comprises an operator;

the influence factor acquisition module is used for acquiring the danger influence factors of the target object if the millimeter wave radar 1 detects that the target object enters the hoistway; wherein the risk influencing factors include at least one of a safety state of the target object, a hoistway intrinsic structure, a tool of use entering the hoistway, and a hoistway state;

the evaluation result determining module is used for evaluating whether the risk influence factors can cause risk influence on the target object or not to obtain a risk evaluation result;

the early warning information output module is used for outputting danger early warning information if the danger evaluation result of any danger influence factor is influenced by danger;

when the operator is on the top of the elevator car, the device also comprises a module for executing the following steps:

9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 7.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.