WO2023028753A1

WO2023028753A1 - Method and system for detecting person trapped by elevator car

Info

Publication number: WO2023028753A1
Application number: PCT/CN2021/115318
Authority: WO
Inventors: 李娇; 浦承东; 李琳
Original assignee: 通力股份公司; 通力电梯有限公司
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2023-03-09
Also published as: EP4397614A1; CN117897351A

Abstract

A method and system for detecting a person trapped by an elevator car. The method comprises: configuring an elevator controller (1) of an elevator to collect state parameters of an elevator car (3) in real time; configuring a digital transmission unit (2) of the elevator to continuously acquire the state parameters from the elevator controller and continuously store the state parameters; when the elevator is in a non-power-off state, the digital transmission unit detecting, according to a logical combination of the acquired state parameters, whether the elevator car is in a state of there being a person trapped therein; and when the elevator is in a power-off state, the digital transmission unit detecting, according to a logical combination of state parameters that are acquired one second before the elevator is powered off, whether the elevator car is in a state of there being a person trapped therein. In the method, whether there is a passenger in an elevator car is determined by using an internal message from an elevator controller, so that it is not necessary to mount an additional sensor even if the elevator is powered off, and the costs can be reduced.

Description

A detection method and detection system for a person trapped in an elevator car

technical field

The disclosure relates to a detection method and a detection system for a person trapped in an elevator car.

Background technique

Elevators are used more and more frequently in today's urbanization and are becoming more and more closed. However, when the building loses power, it sometimes happens that passengers are stranded in the elevator car (i.e., the elevator is trapped), which leads to an immediate negative experience for the passengers. Because this is a safety-related issue, passengers are very sensitive to it, and there are government requirements to detect stranded passengers when buildings lose power. This poses a challenge for elevator manufacturers to detect stranded passengers in a timely manner in the event of a loss of communication when the elevator controller stops operating and loses power. Of course, it is also a challenge for elevator manufacturers to detect passenger retention in a timely manner without power failure.

In order to solve the above problems, the solution in the prior art is to increase sensors (such as infrared sensors, cameras, etc.) for detecting whether people are in the elevator in the elevator car. Although adding this type of sensor can actively obtain the detection signal of whether there is a person in the elevator car, it also has the following disadvantages:

1) To affect the safety of the elevator, it is necessary to add a new sensor to the existing elevator, which may affect the existing stable electrical circuit, and the installation is complicated.

2) Sensors with high cost and high precision are expensive and difficult to popularize.

Therefore, it is necessary to improve the existing elevator trapped people's solution.

Contents of the invention

In order to solve one or more deficiencies in the prior art, according to one aspect of the present disclosure, a method for detecting a person trapped in an elevator car is proposed. The detection method includes: setting the elevator controller of the elevator to collect real-time A state parameter of the car; the digital transmission unit of the elevator is arranged to continuously obtain said state parameter from said elevator controller and continuously store said state parameter.

When the elevator is in a non-power-off state, the digital transmission unit detects whether the elevator car is in a sleepy state according to the acquired logical combination of the state parameters.

When the elevator is in a power-off state, the digital transmission unit detects whether the elevator car is in a trapped state according to the logical combination of the state parameters obtained before the power-off.

For example, the digital transmission unit detects whether the elevator car is in a sleepy state according to the logical combination of the state parameters acquired one second before the power failure.

According to the above aspect of the present disclosure, the power management device of the elevator is arranged to detect whether the elevator is in a power-off state or not and to supply power to the digital transmission unit.

When the elevator is not powered off, the digital transmission unit will receive the first signal sent by the power management device.

When the elevator is in a power-off state, the digital transmission unit will receive the second signal sent by the power management device.

According to the above aspects of the present disclosure, the state parameters include the real-time load of the elevator car and the real-time state of the elevator car door.

When the elevator is in a power-off state, if the digital transmission unit judges that the real-time load of the elevator car is greater than the empty load of the elevator car and judges that the real-time state of the door of the elevator car is in a closed state , then the digital transmission unit sends a sleepy signal.

According to the above aspects of the present disclosure, the state parameter further includes the number of unfinished internal calls from inside the elevator car.

When the elevator is in a power-off state, if the digital transmission unit judges that the real-time load of the elevator car is greater than the empty load of the elevator car and judges that the real-time state of the elevator car door is in a closed state and When it is judged that there are unfinished internal calls, the digital transmission unit sends out a sleepy signal.

According to the above aspects of the present disclosure, when the elevator is in a power-off state, the digital transmission unit transmits the second signal, the real-time load of the elevator car, the real-time state of the elevator car door, the The number of unfinished internal calls and the sleepy signal are sent to the remote server.

According to the above aspects of the present disclosure, the state parameters include the real-time load of the elevator car, the real-time state of the door of the elevator car and the number of unfinished internal calls from inside the elevator car.

When the elevator is in the non-power-off state, if the digital transmission unit judges that the real-time load of the elevator car is greater than the empty car load of the elevator car and judges that the real-time state of the door of the elevator car is closed And when it is judged that there are unfinished internal calls, the digital transmission unit sends out a sleepy signal.

According to the above aspects of the present disclosure, when the elevator is in a non-power-off state, the digital transmission unit transmits the first signal, the real-time load of the elevator car, the real-time state of the elevator car door, the The number of unfinished internal calls and the sleepy signal are sent to the remote server.

According to another aspect of the present disclosure, a detection system for a person trapped in an elevator car is proposed, the detection system includes an elevator controller and a digital transmission unit; the elevator controller collects the state parameters of the elevator car in real time; the digital The transmission unit continuously acquires the status parameters from the elevator controller and stores the status parameters continuously.

According to the above another aspect of the present disclosure, the detection system further includes a power management device.

The power management device is used for detecting whether the elevator is in a power-off state or not in a power-off state and supplying power to the digital transmission unit.

According to the above another aspect of the present disclosure, the state parameters include the real-time load of the elevator car and the real-time state of the elevator car door.

According to the above another aspect of the present disclosure, the state parameter further includes the number of unfinished internal calls from inside the elevator car.

According to the above another aspect of the present disclosure, when the elevator is in a power-off state, the digital transmission unit transmits the second signal, the real-time load of the elevator car, the real-time state of the elevator car door, the The number of unfinished internal calls and the sleepy signal are sent to the remote server.

According to the above another aspect of the present disclosure, the state parameters include the real-time load of the elevator car, the real-time state of the door of the elevator car and the number of unfinished internal calls from inside the elevator car.

According to the above another aspect of the present disclosure, when the elevator is in a non-power-off state, the digital transmission unit transmits the first signal, the real-time load of the elevator car, the real-time state of the elevator car door, The number of unfinished internal calls and the sleepy signal are sent to a remote server.

The technical solution of the present disclosure solves two problems of detecting people trapped in the elevator car when the elevator is powered off:

a) The method according to the present disclosure will still work if no additional sensors are installed inside the elevator car and if there is no passenger interaction with the outside world (without a mobile phone).

b) According to the technical solution of the present disclosure, continuous monitoring can be provided at the back end, and once a person is trapped during a power outage, a signal of a person being trapped is automatically sent to the remote server and the maintenance technician is notified.

Compared with the solutions in the prior art, the technical solution according to the present disclosure has the following technical advantages: By using the internal information of the elevator controller, it is judged in an intelligent manner whether there are passengers in the car, even when the power is off. In this case, all controller data will be lost, and there is no need to install additional sensors, which can meet the cost reduction intention. Remote monitoring has been added to the system, and once a trapped person is identified, an alert is sent to a remote technician.

Thus far, so that the detailed description herein of the disclosure may be better understood, and so that its contribution to the prior art may be better appreciated, this disclosure has summarized, rather broadly, the subject matter of the disclosure. . As such, those skilled in the art will appreciate that the conception upon which this disclosure is based may readily be utilized as a basis for designing other structures, methods and systems for carrying out the present disclosure's several purposes.

Description of drawings

Those skilled in the art will have a better understanding of the present disclosure and more clearly embody the advantages of the present disclosure through the following drawings. The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.

Fig. 1 shows a method for detecting people trapped in an elevator car according to the present disclosure;

Fig. 2 shows a detection system for a person trapped in an elevator car according to the present disclosure.

Detailed ways

The specific implementation manners according to the present disclosure will be described in detail below with reference to the accompanying drawings.

As shown in Figures 1 and 2, according to an embodiment of the present disclosure, a method for detecting people trapped in an elevator car is proposed. The detection method includes: setting the elevator controller 1 of the elevator to collect real-time 3 state parameters; the digital transmission unit 2 of the elevator is set to continuously obtain the state parameters from the elevator controller 1 and continuously store the state parameters.

When the elevator is in the non-power-off state, the digital transmission unit 2 detects whether the elevator car 3 is in a sleepy state according to the acquired logical combination of the state parameters.

When the elevator is in a power-off state, the digital transmission unit 2 detects whether the elevator car 3 is in a sleepy state according to the logical combination of the state parameters acquired before the power-off. For example, the digital transmission unit 2 detects whether the elevator car 3 is in a sleepy state according to the logical combination of the state parameters acquired one second before the power failure.

According to the above-mentioned embodiments of the present disclosure, the power management device 4 of the elevator is arranged to detect whether the elevator is in a power-off state or not and to supply power to the digital transmission unit 2 .

When the elevator is not powered off, the digital transmission unit 2 will receive the first signal sent by the power management device 4 .

When the elevator is in a power-off state, the digital transmission unit 2 will receive the second signal sent by the power management device 4 .

According to the above-mentioned various embodiments of the present disclosure, the state parameters include the real-time load of the elevator car 3 and the real-time state of the doors of the elevator car 3 .

When the elevator is in a power-off state, if the digital transmission unit 2 judges that the real-time load of the elevator car 3 is greater than the empty load of the elevator car 3 and judges the real-time state of the door of the elevator car 3 When it is in the closed state, the digital transmission unit 2 sends a sleepy signal.

According to the above-mentioned embodiments of the present disclosure, the state parameters also include the number of unfinished internal calls from inside the elevator car 3 .

When the elevator is in a power-off state, if the digital transmission unit 2 judges that the real-time load of the elevator car 3 is greater than the empty load of the elevator car 3 and judges the real-time state of the door of the elevator car 3 When it is in the off state and it is judged that there are unfinished internal calls, the digital transmission unit 2 sends a sleepy signal.

According to the above-mentioned embodiments of the present disclosure, when the elevator is in a power-off state, the digital transmission unit 2 transmits the second signal, the real-time load of the elevator car 3, the real-time load of the door of the elevator car 3 Status, the number of unfinished internal calls and the sleepy signal are sent to the remote server 5.

According to the above-mentioned embodiments of the present disclosure, the state parameters include the real-time load of the elevator car 3 , the real-time status of the door of the elevator car 3 and the number of unfinished internal calls from inside the elevator car 3 .

When the elevator is in the non-power-off state, if the digital transmission unit 2 judges that the real-time load of the elevator car 3 is greater than the empty load of the elevator car 3 and judges that the real-time load of the elevator car 3 door is When the state is in the off state and it is judged that there are unfinished internal calls, the digital transmission unit 2 sends a sleepy signal.

According to the above-mentioned embodiments of the present disclosure, when the elevator is in a non-power-off state, the digital transmission unit 2 transmits the first signal, the real-time load of the elevator car 3 , the door of the elevator car 3 The real-time status, the number of unfinished internal calls and the sleepy signal are sent to the remote server 5 .

In the flow chart shown in Figure 1, the digital transmission unit 2 of the elevator is set to continuously obtain and store the real-time load of the elevator car 3 and the real-time status of the elevator car 3 doors, for example, every second from the elevator controller 1 And the empty car load of the elevator car 3 and the number of unfinished internal calls from inside the elevator car 3 are calculated.

If the digital transmission unit 2 judges that there is no fault code, the digital transmission unit 2 of the elevator continues to continuously obtain and store the real-time load of the elevator car 3 and the real-time status of the elevator car 3 doors from the elevator controller 1 and calculate The empty car load of the elevator car 3 and the number of unfinished internal calls from inside the elevator car 3 are calculated.

If the digital transmission unit 2 determines that there is a fault code (for example, control failure), the digital transmission unit 2 continues to determine whether the elevator is in a power-off state.

When it is judged that the elevator is in a power-off state, if the digital transmission unit 2 judges that the real-time load of the elevator car 3 before power-off is greater than the empty load of the elevator car 3 and judges that the elevator When the real-time state of the door of the car 3 is in the closed state and it is judged that there are unfinished internal calls, the digital transmission unit 2 sends a signal of being trapped due to power failure.

When judging that the elevator is in a non-power-off state, if the digital transmission unit 2 judges that the real-time load of the elevator car 3 is greater than the empty load of the elevator car 3 and judges that the elevator car 3 door When the real-time status of the system is in the off state and it is judged that there are unfinished internal calls, the digital transmission unit 2 sends a sleepy signal caused by control failure.

As shown in FIG. 2 , according to another embodiment of the present disclosure, a detection system for a person trapped in an elevator car is proposed, and the detection system includes an elevator controller 1 and a digital transmission unit 2 . The elevator controller 1 collects the state parameters of the elevator car 3 in real time.

The digital transmission unit 2 continuously acquires the state parameters from the elevator controller 1 and stores the state parameters continuously.

According to the above another embodiment of the present disclosure, the detection system further includes a power management device 4 .

The power management device 4 is used to detect whether the elevator is in a power-off state or a non-power-off state and supply power to the digital transmission unit 2 .

The elevator controller 1, the digital transmission unit 2 and the power management device 4 are arranged in an elevator machine room (not shown).

According to the above another embodiment of the present disclosure, the state parameters include the real-time load of the elevator car 3 and the real-time state of the doors of the elevator car 3 .

According to the above-mentioned another embodiment of the present disclosure, the state parameter also includes the number of unfinished internal calls from inside the elevator car 3 (for example, the passenger presses the emergency call button in the elevator car, etc.).

According to the above-mentioned another embodiment of the present disclosure, when the elevator is in a power-off state, the digital transmission unit 2 transmits the second signal, the real-time load of the elevator car 3, the door of the elevator car 3 The real-time status, the number of unfinished internal calls and the sleepy signal are sent to the remote server 5 .

According to the above another embodiment of the present disclosure, the state parameters include the real-time load of the elevator car 3 , the real-time status of the door of the elevator car 3 and the number of unfinished internal calls from inside the elevator car 3 .

According to the above-mentioned another embodiment of the present disclosure, when the elevator is in a non-power-off state, the digital transmission unit 2 transmits the first signal, the real-time load of the elevator car 3 , the door of the elevator car 3 The real-time status, the number of unfinished internal calls and the sleepy signal are sent to the remote server 5.

The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the implementations to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure, or may be acquired from practice of the embodiments.

Even though particular combinations of features are recited in the claims and/or disclosed in the specification, these combinations are not intended to limit the disclosure of the various embodiments. In fact, many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. Although each dependent claim listed below may only be directly dependent on one claim, the disclosure of various embodiments includes each dependent claim in combination with every other claim in the claim set.

No element, act or instruction used herein should be construed as critical or essential unless expressly stated otherwise. Additionally, as used herein, the articles "a" and "an" are intended to include one or more items and may be used interchangeably with "one or more". Furthermore, as used herein, the article "the" is intended to include one or more items referenced in conjunction with the article "the" and may be used interchangeably with "one or more." Furthermore, as used herein, the term "set" is intended to include one or more items (eg, related items, unrelated items, a combination of related and unrelated items, etc.), and may be used interchangeably with "one or more". Where only one item is intended, the phrase "only one item" or similar language is used. In addition, as used herein, the term "having", variations thereof, and the like are intended to be open-ended terms. Additionally, the phrase "based on" is intended to mean "based at least in part on," unless expressly stated otherwise. Additionally, as used herein, the term "or" when used in tandem is intended to be inclusive and may be used interchangeably with "and/or" unless expressly stated otherwise (eg, if used with "or" or "only one of them" in combination).

Claims

A detection method for people trapped in an elevator car, characterized in that the detection method comprises:

The elevator controller of the elevator is set to collect the state parameters of the elevator car in real time;

arranging the digital transmission unit of the elevator to continuously acquire said state parameters from said elevator controller and to continuously store said state parameters;

When the elevator is in a non-power-off state, the digital transmission unit detects whether the elevator car is in a sleepy state according to the acquired logical combination of the state parameters;

When the elevator is in a power-off state, the digital transmission unit detects whether the elevator car is in a trapped state according to the logical combination of the state parameters obtained before the power-off.
The detection method according to claim 1, characterized in that,

When the elevator is in a power-off state, the digital transmission unit detects whether the elevator car is in a sleepy state according to the logical combination of the state parameters acquired one second before the power-off.
The detection method according to claim 2, characterized in that,

The power management device of the elevator is arranged to detect whether the elevator is in a power-off state or a non-power-off state and is arranged to supply power to the digital transmission unit;

When the elevator is in a non-power-off state, the digital transmission unit will receive the first signal sent by the power management device;

When the elevator is in a power-off state, the digital transmission unit will receive the second signal sent by the power management device.
The detection method according to claim 3, characterized in that,

Described state parameter comprises the real-time load of elevator car and the real-time state of elevator car door;

When the elevator is in a power-off state, if the digital transmission unit judges that the real-time load of the elevator car is greater than the empty load of the elevator car and judges that the real-time state of the door of the elevator car is in a closed state , then the digital transmission unit sends a sleepy signal.
The detection method according to claim 4, characterized in that,

The state parameter also includes the number of unfinished internal calls from inside the elevator car;

When the elevator is in a power-off state, if the digital transmission unit judges that the real-time load of the elevator car is greater than the empty load of the elevator car and judges that the real-time state of the elevator car door is in a closed state and When it is judged that there are unfinished internal calls, the digital transmission unit sends out a sleepy signal.
The detection method according to claim 5, characterized in that,

When the elevator is in a power-off state, the digital transmission unit transmits the second signal, the real-time load of the elevator car, the real-time state of the elevator car door, the number of unfinished internal calls and the A sleepy person signal is sent to a remote server.
The detection method according to claim 3, characterized in that,

The state parameters include the real-time load of the elevator car, the real-time state of the elevator car door and the number of unfinished internal calls from inside the elevator car;

When the elevator is in the non-power-off state, if the digital transmission unit judges that the real-time load of the elevator car is greater than the empty car load of the elevator car and judges that the real-time state of the door of the elevator car is closed And when it is judged that there are unfinished internal calls, the digital transmission unit sends out a sleepy signal.
The detection method according to claim 7, characterized in that,

When the elevator is in the non-power-off state, the digital transmission unit transmits the first signal, the real-time load of the elevator car, the real-time state of the elevator car door, the number of unfinished internal calls and the The sleepy person signal is sent to the remote server.
A detection system for people trapped in an elevator car, characterized in that,

The detection system includes an elevator controller and a digital transmission unit;

The elevator controller collects the state parameters of the elevator car in real time;

The digital transmission unit continuously acquires the state parameters from the elevator controller and continuously stores the state parameters;

When the elevator is in a non-power-off state, the digital transmission unit detects whether the elevator car is in a sleepy state according to the acquired logical combination of the state parameters;

When the elevator is in a power-off state, the digital transmission unit detects whether the elevator car is in a trapped state according to the logical combination of the state parameters obtained before the power-off.
The detection system according to claim 9, characterized in that,

When the elevator is in a power-off state, the digital transmission unit detects whether the elevator car is in a sleepy state according to the logical combination of the state parameters acquired one second before the power-off.
The detection system according to claim 10, characterized in that,

The detection system also includes a power management device;

The power management device is used to detect whether the elevator is in a power-off state or a non-power-off state and supply power to the digital transmission unit;

When the elevator is in a non-power-off state, the digital transmission unit will receive the first signal sent by the power management device;

When the elevator is in a power-off state, the digital transmission unit will receive the second signal sent by the power management device.
The detection system according to claim 11, characterized in that,

Described state parameter comprises the real-time load of elevator car and the real-time state of elevator car door;

When the elevator is in a power-off state, if the digital transmission unit judges that the real-time load of the elevator car is greater than the empty load of the elevator car and judges that the real-time state of the door of the elevator car is in a closed state , then the digital transmission unit sends a sleepy signal.
The detection system according to claim 12, characterized in that,

The state parameter also includes the number of unfinished internal calls from inside the elevator car;

When the elevator is in a power-off state, if the digital transmission unit judges that the real-time load of the elevator car is greater than the empty load of the elevator car and judges that the real-time state of the elevator car door is in a closed state and When it is judged that there are unfinished internal calls, the digital transmission unit sends out a sleepy signal.
The detection system according to claim 13, characterized in that,

When the elevator is in a power-off state, the digital transmission unit transmits the second signal, the real-time load of the elevator car, the real-time state of the elevator car door, the number of unfinished internal calls and the A sleepy person signal is sent to a remote server.
The detection system according to claim 11, characterized in that,

The state parameters include the real-time load of the elevator car, the real-time state of the elevator car door and the number of unfinished internal calls from inside the elevator car;

When the elevator is in the non-power-off state, if the digital transmission unit judges that the real-time load of the elevator car is greater than the empty car load of the elevator car and judges that the real-time state of the door of the elevator car is closed And when it is judged that there are unfinished internal calls, the digital transmission unit sends out a sleepy signal.
The detection system according to claim 15, characterized in that,

When the elevator is in the non-power-off state, the digital transmission unit transmits the first signal, the real-time load of the elevator car, the real-time state of the elevator car door, the number of unfinished internal calls and the The sleepy signal is sent to the remote server.