阅读说明：本技术 一种电梯电池火灾预防系统 (Elevator battery fire prevention system ) 是由 范大壮 于 2021-09-18 设计创作，主要内容包括：本发明实施例公开了一种电梯电池火灾预防系统,属于电梯控制技术领域,包括光幕系统、监控系统、电梯控制系统和称重系统,监控系统向电梯控制系统发出电信号,监控系统接收光幕系统和称重系统发出的电信号,称重系统向电梯控制系统和监控系统发出电信号,光幕系统向电梯控制系统发出电信号,光幕系统接收电梯控制系统发出的电信号,光幕系统向监控系统发出电信号。本申请利用监控动力电池系统,判断入侵物体是否为动力电池,显著提高动力电池的识别成功率,避免电梯轿厢内火灾的发生；本申请利用监控火灾系统,当轿厢内火灾发生时,控选所有停靠站点,从而能使电梯自动避险停靠,无需人员手动控制避险,提高了人员火灾避险成功率。(The embodiment of the invention discloses an elevator battery fire prevention system, which belongs to the technical field of elevator control and comprises a light curtain system, a monitoring system, an elevator control system and a weighing system, wherein the monitoring system sends an electric signal to the elevator control system, the monitoring system receives the electric signal sent by the light curtain system and the weighing system, the weighing system sends an electric signal to the elevator control system and the monitoring system, the light curtain system sends an electric signal to the elevator control system, the light curtain system receives the electric signal sent by the elevator control system, and the light curtain system sends an electric signal to the monitoring system. According to the method and the device, the monitoring power battery system is utilized to judge whether the invaded object is a power battery, so that the success rate of identifying the power battery is remarkably improved, and fire in an elevator car is avoided; this application utilizes control fire system, and when the conflagration took place in the car, all stops the website of accuse selection to enable the elevator and keep away the dangerous stop of automatic keeping away, need not personnel's manual control and keep away the danger, improved personnel's conflagration and kept away the dangerous success rate.)

1. The elevator battery fire prevention system is characterized by comprising a light curtain system, a monitoring system, an elevator control system and a weighing system, wherein the monitoring system sends an electric signal to the elevator control system, the monitoring system receives the electric signal sent by the light curtain system and the weighing system, the weighing system sends an electric signal to the elevator control system and the monitoring system, the light curtain system sends an electric signal to the elevator control system, the light curtain system receives the electric signal sent by the elevator control system, and the light curtain system sends an electric signal to the monitoring system.

2. The elevator battery fire prevention system of claim 1, wherein the monitoring system comprises a monitoring fire system and a monitoring power battery system, the monitoring fire system sending electrical signals to the elevator control system, the light curtain system and the weighing system sending electrical signals to the monitoring power battery system.

3. The elevator battery fire prevention system of claim 2, wherein the light curtain system captures a horizontal vector Vh and a vertical vector Vv of an intruding object.

4. The elevator battery fire prevention system of claim 3, wherein the monitoring power battery system records a velocity vector curve Cm of an intruding object.

5. The elevator battery fire prevention system of claim 4, wherein the weighing system records a load change value Δ M of an intruding object.

6. The elevator battery fire prevention system of claim 5, wherein a first algorithm, a second algorithm, and a third algorithm are provided within the monitoring power battery system.

7. The elevator battery fire prevention system according to claim 6, wherein an circumscribed rectangular area S of the intruding object is obtained according to the first algorithm | Vh x Vv |, a volume model V of the intruding object is obtained according to the second algorithm sxcm, and an average density ρ of the intruding object is obtained according to the third algorithm Δ M/V.

8. The elevator battery fire prevention system of claim 7, wherein the monitored power battery system allows a density threshold of 1kg/dm to be set³-2kg/dm³。

9. The elevator battery fire prevention system of claim 8, wherein an audible and visual alarm module and a communication module are disposed within each of the fire monitoring system and the power battery monitoring system.

10. The elevator battery fire prevention system of claim 9, wherein the fire monitoring system and the power battery monitoring system are AI intelligence judgment systems.

Technical Field

The embodiment of the invention relates to the technical field of elevator control, in particular to an elevator battery fire prevention system.

Background

With the increasing degree of social electrification, the use of high-capacity power batteries is gradually increased. Due to market demands for high energy density, power batteries have been increasingly under fire conditions caused by poor manufacturing/management/use. In many fire scenarios, a battery that occurs within the elevator car is particularly dangerous to deflagrate fires. The space in the elevator is narrow, and the distance between passengers is very close. Once the battery deflagrates, the fire condition which is instantly generated when the passenger is at the bottom of the ground is difficult to obtain a risk avoiding means. There is therefore an urgent need for a means of controlling the risk of fire caused by batteries.

At present, the technical means of identifying the electric vehicle and preventing the electric vehicle from entering the elevator car through a video monitoring signal and a safety light curtain is too simple, and the overall accuracy is not high. Furthermore, the dangerous behavior of the passenger in the car when the battery is removed cannot be effectively recognized. The protective barrier is easy to break through. In addition, means for coping with possible fire in the elevator car is lacked. No design consideration is taken into account for non-battery hazardous material-induced fires.

Therefore, the technical problem to be solved by those skilled in the art is how to provide an elevator safety system, which can effectively identify a power battery and prevent a fire accident in an elevator.

Disclosure of Invention

Therefore, the embodiment of the invention provides an elevator battery fire prevention system, which aims to solve the problem of low overall accuracy caused by too simple technical means of identifying an electric vehicle through a video monitoring signal and a safety light curtain and preventing the electric vehicle from entering in the prior art.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

the utility model provides an elevator battery fire prevention system, includes light curtain system, monitored control system, elevator control system and weighing system, monitored control system to elevator control system sends the signal of telecommunication, monitored control system receives the signal of telecommunication that light curtain system and weighing system sent, weighing system to elevator control system and monitored control system send the signal of telecommunication, light curtain system to elevator control system sends the signal of telecommunication, light curtain system receives the signal of telecommunication that elevator control system sent, light curtain system to monitored control system sends the signal of telecommunication.

Further, the monitoring system comprises a monitoring fire system and a monitoring power battery system, the monitoring fire system sends an electric signal to the elevator control system, and the light curtain system and the weighing system send an electric signal to the monitoring power battery system.

Further, the light curtain system acquires a horizontal vector Vh and a vertical vector Vv of the intruding object.

Further, the monitoring power battery system records a speed vector curve Cm of the intruding object.

Further, the weighing system records the load change value delta M of the invaded object.

Further, a first algorithm, a second algorithm and a third algorithm are arranged in the monitoring power battery system.

Further, an circumscribed rectangle area S of the invading object is obtained according to the first algorithm | Vh × Vv |, a volume model V of the invading object is obtained according to the second algorithm S × Cm, and an average density ρ of the invading object is obtained according to the third algorithm Δ M/V.

Further, the monitoring power battery system allows a density threshold of 1kg/dm to be set³-2kg/dm³。

Furthermore, an audible and visual alarm module and a communication module are arranged in the fire monitoring system and the power battery monitoring system.

Furthermore, the fire monitoring system and the power monitoring battery system are AI intelligent judgment systems.

The embodiment of the invention has the following advantages:

according to the method, the monitoring power battery system is utilized, the average density rho of the invading object is calculated by utilizing the characteristics of AI intelligent judgment, and after comparison, whether the invading object is a power battery is judged, so that the success rate of power battery identification can be remarkably improved, and the occurrence of fire in an elevator car is avoided; according to the method, the monitoring fire system is utilized, when a fire disaster occurs in the lift car, the monitoring fire system sends a stopping signal to the elevator control system, and all stopping stations are controlled and selected, so that the elevator can automatically avoid danger and stop, personnel do not need to manually control the danger, and the success rate of personnel fire danger avoiding is improved; this application utilizes acousto-optic warning module and communication module, sends alarm signal through acousto-optic warning module to inform alert feelings through communication module, convenient rescue still provides the administrator permission through communication module simultaneously, uses in a flexible way.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.

FIG. 1 is a block flow diagram of an embodiment of the present invention;

in the figure:

100 light curtain system; 200 monitoring the system; 201 monitoring a fire system; 202 monitoring the power battery system; 300 an elevator control system; 400 weighing system.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to solve the related technical problem that exists among the prior art, this application embodiment provides an elevator battery fire prevention system, aims at solving unable effective discernment power battery scheduling problem in the current elevator, realizes effectively discerning power battery, the effect of the emergence of fire incident in the prevention elevator. As shown in fig. 1, the monitoring system 200 specifically includes a light curtain system 100, a monitoring system 200, an elevator control system 300 and a weighing system 400, and the monitoring system 200 includes a fire monitoring system 201 and a power battery monitoring system 202. The monitoring fire system 201 sends an electric signal to the elevator control system 300, and when a fire is monitored, all stopping points of the elevator are controlled and selected, so that the elevator can automatically avoid danger and stop without manual control of personnel, and the success rate of avoiding danger of personnel fire is improved. The light curtain system 100 and the weighing system 400 send electrical signals to the monitoring power battery system 202, and when an intruding object exists, the light curtain system 100 and the weighing system 400 transmit collected data to the monitoring power battery system 202 for judging the shape, size and density of the intruding object.

Sound and light alarm modules and communication modules are arranged in the monitoring fire system 201 and the monitoring power battery system 202, when a fire disaster occurs, the sound and light alarm modules in the monitoring fire system 201 can give out alarm sound, and the communication modules inform the alarm situation to remind people in the elevator to evacuate in time; when the power battery system 202 is monitored to monitor the power battery in the elevator, the sound and light alarm module in the power battery system 202 can give out alarm sound to prohibit passengers from taking the power battery into the elevator, and if the false alarm phenomenon occurs, the passengers can also contact with an administrator through the communication module to obtain the exemption permission.

The weighing system 400 sends an electrical signal to the elevator control system 300 to control the elevator doors to remain open when the elevator is overweight. The light curtain system 100 sends an electrical signal to the elevator control system 300, and when the light curtain system 100 senses that the elevator is free of an invasive object, the elevator returns to the state of door closing when the elevator is counting down. The light curtain system 100 receives the electrical signal sent by the elevator control system 300, and when the elevator arrives at the station, the light curtain system 100 first performs self-checking to ensure that the light curtain system 100 can work normally.

Specifically, in the embodiment, as shown in fig. 1, the elevator control system 300 operates in a process that the elevator door is in a closed state when the elevator is in operation, and when the elevator arrives at a station, the elevator door does a door opening action, and after the elevator door is opened, the elevator door makes different reactions in the following three situations: first, when a fire alarm is started in the elevator, the elevator control system 300 controls the elevator to stop; secondly, when passengers or objects invade the elevator, the safety loop of the elevator control system 300 is disconnected, so that the elevator keeps the door open state; thirdly, when no passenger or object invades the elevator, the elevator control system 300 performs countdown to close the door, and after the door is closed, the safety loop is unblocked, so that the elevator runs normally.

Specifically, in the embodiment, as shown in fig. 1, the light curtain system 100 operates in a process that, when the elevator arrives at a station and opens the door, the light curtain system 100 first performs self-checking, and the monitoring system 200 confirms the door opening operation from the monitoring camera. After the self-checking is finished, when the self-checking fails, the light curtain system 100 records a fault log and informs a worker to perform maintenance; when the self-test is passed, the light curtain system 100 operates normally and detects whether an object is intruded. When an invading object exists, the width of the shielded light path is recorded, so that a horizontal vector Vh and a vertical vector Vv of the invading object are obtained, and the horizontal vector Vh and the vertical vector Vv of the invading object are transmitted into the monitoring power battery system 202; when no invasive object exists, a signal is transmitted to the elevator control system 300, the door is closed by countdown, and the safety loop is unblocked to ensure that the elevator operates normally after the door is closed.

Specifically, in the embodiment, as shown in fig. 1, the weighing system 400 operates by recording the data amount Δ M of the load change by the weighing system 400 and transmitting the data amount Δ M of the load change to the monitoring power battery system 202; when the weighing system 400 detects that the elevator is overweight, the elevator door is controlled to keep the open state.

Specifically, in an embodiment, as shown in fig. 1, the monitored fire system 201 and the monitored power battery system 202 are AI intelligence determination systems. The monitoring camera in the monitoring fire system 201 is always in a monitoring mode, when the monitoring camera identifies smoke and flame images through video information, the monitoring fire system 201 sends out alarm sound, meanwhile, a fire alarm signal is sent out to the elevator control system 300, and all stopping points of the elevator are controlled and selected, so that the elevator can automatically avoid danger and stop, personnel do not need to manually control to avoid danger, and the success rate of avoiding danger of the personnel fire is improved.

Specifically, in an embodiment, as shown in fig. 1, the monitoring power battery system 202 records a velocity vector curve Cm of the intruding object. And acquiring a horizontal vector Vh and a vertical vector Vv of the invading object transmitted by the light curtain system 100, and acquiring the data volume delta M of the load change recorded by the weighing system 400. And a first algorithm, a second algorithm, and a third algorithm are provided within the monitoring power battery system 202. And obtaining the circumscribed rectangular area S of the invaded object according to a first algorithm | Vh multiplied by Vv |, obtaining a volume model V of the invaded object according to a second algorithm S multiplied by Cm, and obtaining the average density rho of the invaded object according to a third algorithm delta M/V.

Specifically, in an embodiment, as shown in FIG. 1, the allowable density threshold for monitoring the power cell system 202 is set to be between 1.13kg/dm and 1.06 kg/dm. When the monitoring power battery system 202 judges that the invading object is a power battery, the safety circuit in the elevator control system 300 is controlled to be disconnected, so that the elevator keeps the door opening state. Meanwhile, the monitoring power battery system 202 gives out an alarm sound, and the passengers are prompted to avoid taking the power battery to the elevator through voice prohibition. Passengers can also complain through the communication module to an administrator who has the right to control the exemption. After the complaint is successful, the administrator opens the exemption right, prompts passengers to recover the operation of the elevator through the communication module, and controls the elevator to normally close the door.

At present, the technical means of identifying the electric vehicle and preventing the electric vehicle from entering the elevator car through a video monitoring signal and a safety light curtain is too simple, and the overall accuracy is not high. Furthermore, the dangerous behavior of the passenger in the car when the battery is removed cannot be effectively recognized. The protective barrier is easy to break through. In addition, means for coping with possible fire in the elevator car is lacked. No design consideration is taken into account for non-battery hazardous material-induced fires. The invention is designed to overcome the defects, and two embodiments are designed, wherein the first embodiment can accurately identify the power battery and prevent the power battery from entering the elevator car, and the second embodiment can deal with emergency escape when a fire disaster happens in the elevator car.

Example 1:

the change information of the power battery system 202, the light curtain system 100 and the weighing system 400 is comprehensively monitored, the power battery is identified through the AI intelligent judgment system, and then the power battery is prevented from being brought into the elevator car in a mode of preventing the elevator from door closing operation through the self-contained safety loop signal of the elevator and sending a warning signal.

The process of the AI intelligent judgment system for identifying the power battery is as follows:

when the light curtain system 100 determines that an object is intruding, the length of the covered light is recorded, and a horizontal vector Vh and a vertical vector Vv are generated according to the length. Meanwhile, the camera starts to judge the type of the invaded object through a YOLO algorithm image, and starts to record a speed vector curve Cm of the invaded object. And calculating the object of the suspected battery or the electric vehicle through the convolution layer, and taking an absolute value | Vh multiplied by Vv | of the cross product of a horizontal vector and a vertical vector of the object to obtain an instantaneous circumscribed rectangular area S of the invaded object. And obtaining a volume model Vj for judgment by the S multiplied by Cm. And when the invaded object completely enters the car, dividing the load change value delta M obtained by the car weighing plate by V to obtain the average density rho of the invaded object. When the density is 1.13kg/dm³＞ρ＞1.06kg/dm³The passenger can be judged to carry the power battery. The determination is an aid to graphical determination. In daily life, the appearance of the power battery is similar to that of various electric tools and electronic equipment, such as tool boxes, computer hosts, audio speakers and the like. Wherein the tools are made of steel and have a density of more than 2kg/dm³. The electronic equipment has larger internal space, lighter material and obviously less than 1kg/dm of density³. The addition of the density judgment can effectively distinguish confusion of other daily articles and the power battery.

The working modes of the systems are as follows:

1. and the video monitoring information of multiple angles and no dead angles in the elevator car is obtained through the multi-point elevator monitoring system 200. The AI intelligent judgment system preliminarily identifies the object entering the elevator car through the video information and calculates the entering speed.

2. The real-time height of the object passing through the elevator door is obtained through the elevator intelligent safety light curtain system 100. The AI intelligent judgment system calculates the side area of the entering object by combining the height information and the entering speed. And in combination with the video information obtained by the monitoring system 200, the volume of the entering object is calculated.

3. The average density of the entering object can be calculated by the load weight change value obtained by the elevator car load weighing system 400 and the calculated volume of the entering object through the AI intelligent judgment system.

4. Due to the density (3-5 kg/dm) of the power battery³) Compared with the average density of human body (1.02-1.03 kg/dm)³) Is remarkably high. The power battery in the video signal can be accurately judged through the density difference AI intelligent judgment system.

5. If the system is judged to be a power battery, a safety loop disconnection signal is sent out through the elevator control system 300, and the elevator is prevented from closing to operate. And storing a video recording log and prompting passengers to take the power battery away through an audible and visual alarm system in the elevator.

6. The monitoring power battery system 202 is also provided with a communication module to provide the passengers with complaint redemption measures via a property management approach. Administrator privileges may set exemption or whitelist privileges. The information of the complaint and redemption way is provided to the passengers by the acousto-optic alarm information.

Example 2:

whether a fire disaster occurs in the elevator is judged by the monitoring fire disaster system 201, and when the fire disaster occurs, an alarm is rapidly sent out, and the elevator car is stopped nearby to open the door so that the victim can escape.

The working modes of the systems are as follows:

1. and the video monitoring information of multiple angles and no dead angles in the elevator car is obtained through the multi-point elevator monitoring system 200. And the AI intelligent judgment system identifies the smoke and flame images through the video information.

2. If the smoke and flame images are identified, all stop station information is selected through the car floor selection control loop while a fire alarm signal is sent out, so that the elevator car stops nearby and is opened for people to escape.

The application process of the embodiment of the invention is as follows:

when the elevator is opened and the light curtain system 100 detects an intruding object, the light curtain system 100 starts to record the width of the blocked light path, so as to obtain the horizontal vector V of the intruding objecth and a vertical vector Vv. The weighing system 400 records the amount of load change Δ M. The monitoring power battery system 202 records the velocity vector curve Cm of the intruding object. The monitoring power battery system 202 obtains the average density ρ of the invading object by acquiring the horizontal vector Vh, the vertical vector Vv and the data volume Δ M of the load change of the invading object and according to the first algorithm, the second algorithm and the third algorithm in the monitoring power battery system 202. When the density is 1.13kg/dm³＞ρ＞1.06kg/dm³The passenger can be judged to carry the power battery. At the moment, the elevator gives out an alarm sound to prompt passengers to take the power battery away; when a fire disaster occurs in the elevator, the monitoring fire system 201 recognizes smoke and flame images, sends a fire alarm signal to the elevator control system 300, and controls and selects all stopping points of the elevator, so that the elevator car stops nearby and is opened for people to escape.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.