CN117897351A - Detection method and detection system for trapped people in elevator car - Google Patents
Detection method and detection system for trapped people in elevator car Download PDFInfo
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- CN117897351A CN117897351A CN202180101940.8A CN202180101940A CN117897351A CN 117897351 A CN117897351 A CN 117897351A CN 202180101940 A CN202180101940 A CN 202180101940A CN 117897351 A CN117897351 A CN 117897351A
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- 238000001514 detection method Methods 0.000 title claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 106
- 238000000034 method Methods 0.000 claims abstract description 15
- 230000009429 distress Effects 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
Abstract
The detection method for the trapped people in the elevator car comprises the following steps: setting an elevator controller (1) of the elevator to acquire state parameters of an elevator car (3) in real time; -arranging the digital transmission unit (2) of the elevator to continuously acquire the status parameters from the elevator controller and to continuously store the status parameters; when the elevator is in a non-power-off state, the digital transmission unit detects whether the elevator car is in a trapped state according to the logic combination of the acquired state parameters; when the elevator is in a power-off state, the digital transmission unit detects whether the elevator car is in a stranded state based on a logical combination of state parameters acquired one second before the power-off. The method judges whether passengers exist in the car or not by utilizing the internal information of the elevator controller, and no additional sensor is required to be installed even under the condition of power failure, so that the cost can be reduced.
Description
The present disclosure relates to a detection method and detection system for elevator car trapped people.
Elevators are used more and more frequently today for urban use and are more and more closed. However, when the building is powered down, it sometimes happens that passengers get stuck in the elevator car (i.e. the elevator is trapped), which gives the passengers a direct bad experience. Because this is a safety-related problem, to which passengers are very sensitive, governments have also a need to detect passenger retention when a building is powered down. This presents challenges to elevator manufacturers in terms of detecting passenger retention in time in the event of loss of communication when the elevator controller is out of service and powered down. Of course, detecting passenger retention in time in the non-powered off state is also a challenge to be faced by elevator manufacturers.
In order to solve the above problems, a solution in the prior art is to add a sensor (such as an infrared sensor, a camera, etc.) for detecting whether a person is in the elevator car. The addition of such sensors, while capable of actively obtaining a detection signal of whether a person is in the elevator car, has the following drawbacks:
1) The safety of the elevator is affected, a sensor needs to be newly added on the existing elevator, and the existing stable electric circuit is possibly affected and is complex to install.
2) The cost is higher, and the sensor that the precision is higher is expensive, is difficult to popularize.
Thus, there is a need for improvements in existing elevator solutions.
Disclosure of Invention
To address one or more of the deficiencies in the prior art, a method of detecting elevator car distress is presented according to one aspect of the present disclosure, the method comprising: setting an elevator controller of an elevator to acquire state parameters of an elevator car in real time; the digital transmission unit of the elevator is arranged to continuously acquire the status parameters from the elevator controller and to continuously store the status parameters.
When the elevator is in a non-power-off state, the digital transmission unit detects whether the elevator car is in a trapped state according to the obtained logical combination of the state parameters.
When the elevator is in a de-energized state, the digital transmission unit detects whether the elevator car is in a stranded state based on a logical combination of the state parameters acquired before de-energizing.
For example, the digital transmission unit detects whether the elevator car is in a trapped state from a logical combination of the state parameters acquired one second before the power failure.
According to the above aspect of the disclosure, the power management device of the elevator is arranged to detect whether the elevator is in a de-energized state or a non-de-energized state and to supply power to the digital transmission unit.
When the elevator is in a non-power-off state, the digital transmission unit will receive a first signal sent by the power management device.
When the elevator is in a power-off state, the digital transmission unit will receive a second signal sent by the power management device.
According to the above aspects of the present disclosure, the status parameters include real-time load of the elevator car and real-time status of the elevator car doors.
When the elevator is in a power-off state, the digital transmission unit sends out a trapping signal if the digital transmission unit judges that the real-time load of the elevator car is larger 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.
According to the above aspects of the disclosure, the status parameter further includes a number of outstanding calls from inside the elevator car.
When the elevator is in a power-off state, the digital transmission unit sends out a trapping signal if the digital transmission unit judges that the real-time load of the elevator car is larger 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 judges that the unfinished number of internal calls exists.
According to the above aspects of the present disclosure, 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 outstanding hall calls, and the trapped person signal to a remote server when the elevator is in a power-off state.
According to the above aspects of the present disclosure, the status parameters include real-time load of the elevator car, real-time status of the elevator car doors, and number of outstanding calls in from inside the elevator car.
When the elevator is in a non-power-off state, the digital transmission unit sends out a trapping signal if the digital transmission unit judges that the real-time load of the elevator car is larger than the empty load of the elevator car and that the real-time state of the elevator car door is in a closed state and that the unfinished number of times of internal calling exists.
According to the above aspects of the present disclosure, 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 outstanding hall calls, and the people trapping signal to a remote server when the elevator is in a non-powered-off state.
According to another aspect of the present disclosure there is presented a detection system of elevator car distress, the detection system comprising an elevator controller and a digital transmission unit; the elevator controller collects state parameters of an elevator car in real time; the digital transmission unit continuously acquires the status parameters from the elevator controller and continuously stores the status parameters.
When the elevator is in a non-power-off state, the digital transmission unit detects whether the elevator car is in a trapped state according to the obtained logical combination of the state parameters.
When the elevator is in a de-energized state, the digital transmission unit detects whether the elevator car is in a stranded state based on a logical combination of the state parameters acquired before de-energizing.
For example, the digital transmission unit detects whether the elevator car is in a trapped state from a logical combination of the state parameters acquired one second before the power failure.
According to another aspect of the disclosure, the detection system further comprises a power management device.
The power management device is used for detecting whether the elevator is in a power-off state or a non-power-off state and supplying power to the digital transmission unit.
When the elevator is in a non-power-off state, the digital transmission unit will receive a first signal sent by the power management device.
When the elevator is in a power-off state, the digital transmission unit will receive a second signal sent by the power management device.
According to another aspect of the disclosure, the status parameters include a real-time load of the elevator car and a real-time status of the elevator car door.
When the elevator is in a power-off state, the digital transmission unit sends out a trapping signal if the digital transmission unit judges that the real-time load of the elevator car is larger 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.
According to the above-mentioned further aspect of the disclosure, the status parameter further comprises the number of outstanding calls from inside the elevator car.
When the elevator is in a power-off state, the digital transmission unit sends out a trapping signal if the digital transmission unit judges that the real-time load of the elevator car is larger 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 judges that the unfinished number of internal calls exists.
According to the above-mentioned other aspect of the disclosure, the digital transmission unit transmits the second signal, the real-time load of the elevator car, the real-time status of the elevator car door, the number of outstanding hall calls and the people trapping signal to a remote server when the elevator is in a power-off state.
According to another aspect of the disclosure, the status parameters include real-time load of the elevator car, real-time status of the elevator car doors, and number of outstanding calls in from inside the elevator car.
When the elevator is in a non-power-off state, the digital transmission unit sends out a trapping signal if the digital transmission unit judges that the real-time load of the elevator car is larger than the empty load of the elevator car and that the real-time state of the elevator car door is in a closed state and that the unfinished number of times of internal calling exists.
According to the above-mentioned other aspect of the disclosure, the digital transmission unit transmits the first signal, the real-time load of the elevator car, the real-time status of the elevator car door, the number of outstanding hall calls and the people trapping signal to a remote server when the elevator is in a non-power-off state.
The technical scheme of the disclosure solves two problems of people trapping detection in an elevator car when the elevator is powered off:
a) The method according to the present disclosure can still work if no additional sensors are installed in the elevator car and if no passengers interact with the outside world (without a mobile phone).
b) The technical solution according to the present disclosure can provide continuous monitoring at the back end and automatically send a trapping signal to a remote server and notify maintenance technicians once trapping occurs at power-off.
Compared with the solutions in the prior art, the technical solution according to the present disclosure has the technical advantage that by utilizing the internal messages of the elevator controller, whether passengers are present in the car is judged in an intelligent manner, and even if the power is off, all the controller data can be lost, and no additional sensor needs to be installed, which can meet the intention of reducing the cost. Remote monitoring is added to the system, and an alarm is sent to a remote technician once the trapped person is confirmed.
So that the disclosure may be better understood, and so that the contributions to the art may be better appreciated, it has been outlined, quite broadly, in order that the detailed description thereof herein may be better appreciated. 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 the designing of other structures, methods and systems for carrying out the several purposes of the present disclosure.
The present disclosure will be better understood and its advantages will be more clearly apparent to those skilled in the art from the following drawings. The drawings described herein are for illustration purposes only of selected embodiments and are not intended to limit the scope of the present disclosure in any way as opposed to all possible implementations.
Fig. 1 illustrates a method of detecting elevator car distress according to the present disclosure;
fig. 2 illustrates an elevator car crowd detection system according to the present disclosure.
Specific embodiments in accordance with the present disclosure are described in detail below with reference to the various drawings.
As shown in fig. 1 and 2, according to one embodiment of the present disclosure, there is provided a detection method of elevator car trapping, the detection method including: setting an elevator controller 1 of an elevator to acquire state parameters of an elevator car 3 in real time; the digital transmission unit 2 of the elevator is arranged to continuously acquire the status parameters from the elevator controller 1 and to continuously store the status parameters.
When the elevator is in a non-de-energized state, the digital transmission unit 2 detects whether the elevator car 3 is in a stranded state or not on the basis of the logical combination of the state parameters acquired.
When the elevator is in a de-energized state, the digital transmission unit 2 detects whether the elevator car 3 is in a stranded state or not on the basis of a logical combination of the state parameters acquired before de-energizing. For example, the digital transmission unit 2 detects whether the elevator car 3 is in a trapped state or not based on a logical combination of the state parameters acquired one second before the power failure.
According to the above-described embodiment of the present disclosure, the power management device 4 of the elevator is arranged to detect whether the elevator is in a de-energized state or in a non-de-energized state and to supply power to the digital transmission unit 2.
When the elevator is in a non-powered off state, the digital transmission unit 2 will receive the first signal issued by the power management device 4.
When the elevator is in a de-energized state, the digital transmission unit 2 will receive a second signal from the power management device 4.
According to the above-described various embodiments of the present disclosure, the status parameters include the real-time load of the elevator car 3 and the real-time status of the doors of the elevator car 3.
When the elevator is in the power-off state, the digital transmission unit 2 sends out a trapping signal if the digital transmission unit 2 judges that the real-time load of the elevator car 3 is larger than the empty load of the elevator car 3 and judges that the real-time state of the door of the elevator car 3 is in the closed state.
According to the above-described various embodiments of the present disclosure, the status parameter also includes the number of outstanding calls in from inside the elevator car 3.
When the elevator is in the power-off state, the digital transmission unit 2 sends out a trapping signal if the digital transmission unit 2 judges that the real-time load of the elevator car 3 is larger than the empty car load of the elevator car 3 and that the real-time state of the elevator car 3 door is in the closed state and that there is an incomplete number of internal calls.
According to the above-described various embodiments of the present disclosure, the digital transmission unit 2 transmits the second signal, the real-time load of the elevator car 3, the real-time status of the elevator car 3 door, the number of outstanding hall calls and the people-trapped signal to a remote server 5 when the elevator is in a power-off state.
According to the above-described various embodiments of the present disclosure, the status parameters include the real-time load of the elevator car 3, the real-time status of the doors of the elevator car 3, and the number of outstanding calls from inside the elevator car 3.
When the elevator is in a non-power-off state, the digital transmission unit 2 sends out a trapping signal 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 that the real-time state of the elevator car 3 door is in a closed state and that there is an incomplete number of internal calls.
According to the above-described various embodiments of the present disclosure, the digital transmission unit 2 transmits the first signal, the real-time load of the elevator car 3, the real-time status of the elevator car 3 door, the number of outstanding hall calls and the people-trapped signal to a remote server 5 when the elevator is in a non-powered-off state.
In the flow chart shown in fig. 1, the digital transmission unit 2 of the elevator is arranged to continuously acquire and store the real-time load of the elevator car 3 and the real-time status of the doors of the elevator car 3 from the elevator controller 1 at each second, for example, and to calculate the empty load of the elevator car 3 and the number of outstanding calls from inside the elevator car 3.
If the digital transmission unit 2 determines that there is no fault code, the digital transmission unit 2 of the elevator continues to acquire and store the real-time load of the elevator car 3 and the real-time status of the doors of the elevator car 3 from the elevator controller 1 and calculates the empty load of the elevator car 3 and the number of outstanding calls from inside the elevator car 3.
If the digital transmission unit 2 determines that a fault code (e.g. a control failure) exists, 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 the power-off state, if the digital transmission unit 2 judges that the real-time load of the elevator car 3 before the power-off is larger than the empty load of the elevator car 3 and that the real-time state of the elevator car 3 door is in the closed state and that there is an unfinished number of times of call-in, the digital transmission unit 2 emits a signal of trapping people due to the power-off.
When it is judged that 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 that the real-time state of the elevator car 3 door is in the closed state and that there is an incomplete number of times of inward calls, the digital transmission unit 2 sends out a trapping signal caused by control failure.
As shown in fig. 2, according to another embodiment of the present disclosure, there is presented a detection system of elevator car distress, which includes an elevator controller 1 and a digital transmission unit 2. The elevator controller 1 acquires the state parameters of the elevator car 3 in real time.
The digital transmission unit 2 continuously acquires the status parameters from the elevator controller 1 and continuously stores the status parameters.
When the elevator is in a non-de-energized state, the digital transmission unit 2 detects whether the elevator car 3 is in a stranded state or not on the basis of the logical combination of the state parameters acquired.
When the elevator is in a de-energized state, the digital transmission unit 2 detects whether the elevator car 3 is in a stranded state or not on the basis of a logical combination of the state parameters acquired before de-energizing. For example, the digital transmission unit 2 detects whether the elevator car 3 is in a trapped state or not based on a logical combination of the state parameters acquired one second before the power failure.
According to the above-described further embodiment of the present disclosure, the detection system further comprises a power management device 4.
The power management device 4 is used to detect whether the elevator is in a de-energized state or non-de-energized state and to 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).
When the elevator is in a non-powered off state, the digital transmission unit 2 will receive the first signal issued by the power management device 4.
When the elevator is in a de-energized state, the digital transmission unit 2 will receive a second signal from the power management device 4.
According to the above-mentioned further embodiment of the present disclosure, the status parameters include the real-time load of the elevator car 3 and the real-time status of the doors of the elevator car 3.
When the elevator is in the power-off state, the digital transmission unit 2 sends out a trapping signal if the digital transmission unit 2 judges that the real-time load of the elevator car 3 is larger than the empty load of the elevator car 3 and judges that the real-time state of the door of the elevator car 3 is in the closed state.
According to the above-mentioned further embodiment of the present disclosure, the status parameters also include the number of outstanding calls in from inside the elevator car 3 (e.g. passengers pressing an emergency call button in the elevator car, etc.).
When the elevator is in the power-off state, the digital transmission unit 2 sends out a trapping signal if the digital transmission unit 2 judges that the real-time load of the elevator car 3 is larger than the empty car load of the elevator car 3 and that the real-time state of the elevator car 3 door is in the closed state and that there is an incomplete number of internal calls.
According to the above-mentioned further embodiment of the present disclosure, the digital transmission unit 2 sends the second signal, the real-time load of the elevator car 3, the real-time status of the doors of the elevator car 3, the number of outstanding calls in and the people-trapped signal to a remote server 5 when the elevator is in a de-energized state.
According to the above-described further embodiment of the present disclosure, the status parameters include the real-time load of the elevator car 3, the real-time status of the doors of the elevator car 3 and the number of outstanding calls from inside the elevator car 3.
When the elevator is in a non-power-off state, the digital transmission unit 2 sends out a trapping signal 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 that the real-time state of the elevator car 3 door is in a closed state and that there is an incomplete number of internal calls.
According to the above-mentioned further embodiment of the present disclosure, the digital transmission unit 2 sends the first signal, the real-time load of the elevator car 3, the real-time status of the doors of the elevator car 3, the number of outstanding calls in and the people-trapped signal to a remote server 5 when the elevator is in a non-powered-down state.
The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the embodiments to the precise form disclosed. Modifications and variations are possible 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. Indeed, many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. Although each of the dependent claims listed below may depend directly on only one claim, disclosure of various embodiments includes each dependent claim in combination with each other claim in the claim set.
No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. In addition, 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 recited 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 (e.g., related items, unrelated items, a combination of related and unrelated items, etc.), and can 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" and variants thereof and the like are intended to be open-ended terms. Furthermore, the phrase "based on" is intended to mean "based, at least in part, on" unless explicitly stated otherwise. In addition, as used herein, the term "or" when used in series is intended to be inclusive and may be used interchangeably with "and/or" unless otherwise specifically indicated (e.g., if used in conjunction with "or" only one of ").
Claims (16)
- A method for detecting trapped elevator car, the method comprising:setting an elevator controller of an elevator to acquire state parameters of an elevator car in real time;-setting the digital transmission unit of the elevator to continuously acquire the status parameters from the elevator controller and to continuously store the status parameters;when the elevator is in a non-power-off state, the digital transmission unit detects whether the elevator car is in a trapped state according to the acquired logic combination of the state parameters;when the elevator is in a de-energized state, the digital transmission unit detects whether the elevator car is in a stranded state based on a logical combination of the state parameters acquired before de-energizing.
- The method according to claim 1, wherein,when the elevator is in a power-off state, the digital transmission unit detects whether the elevator car is in a stranded state based on a logical combination of the state parameters acquired one second before the power-off.
- The method of claim 2, wherein,setting a power management device of an elevator to detect whether the elevator is in a powered-off state or a non-powered-off state and to supply power to the digital transmission unit;when the elevator is in a non-power-off state, the digital transmission unit receives a first signal sent by the power management equipment;when the elevator is in a power-off state, the digital transmission unit will receive a second signal sent by the power management device.
- The method according to claim 3, wherein,the status parameters include real-time load of the elevator car and real-time status of the elevator car doors;when the elevator is in a power-off state, the digital transmission unit sends out a trapping signal if the digital transmission unit judges that the real-time load of the elevator car is larger 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.
- The method according to claim 4, wherein,the status parameter also includes a number of outstanding calls in from inside the elevator car;when the elevator is in a power-off state, the digital transmission unit sends out a trapping signal if the digital transmission unit judges that the real-time load of the elevator car is larger 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 judges that the unfinished number of internal calls exists.
- The method according to claim 5, wherein,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 outstanding hall calls, and the people-trapped signal to a remote server.
- The method according to claim 3, wherein,the status parameters include real-time load of the elevator car, real-time status of the elevator car doors, and number of outstanding calls in from inside the elevator car;when the elevator is in a non-power-off state, the digital transmission unit sends out a trapping signal if the digital transmission unit judges that the real-time load of the elevator car is larger than the empty load of the elevator car and that the real-time state of the elevator car door is in a closed state and that the unfinished number of times of internal calling exists.
- The method according to claim 7, wherein,when the elevator is in a non-powered 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 outstanding calls in, and the people-trapped signal to a remote server.
- A detection system for elevator car is characterized in that,the detection system comprises an elevator controller and a digital transmission unit;the elevator controller collects state parameters of an elevator car in real time;the digital transmission unit continuously acquires the status parameters from the elevator controller and continuously stores the status parameters;when the elevator is in a non-power-off state, the digital transmission unit detects whether the elevator car is in a trapped state according to the acquired logic combination of the state parameters;when the elevator is in a de-energized state, the digital transmission unit detects whether the elevator car is in a stranded state based on a logical combination of the state parameters acquired before de-energizing.
- The detection system of claim 9, wherein the detection system comprises a sensor,when the elevator is in a power-off state, the digital transmission unit detects whether the elevator car is in a stranded state based on a logical combination of the state parameters acquired one second before the power-off.
- The detection system of claim 10, wherein the detection system comprises a sensor,the detection system further comprises a power management device;the power management device is used for detecting whether the elevator is in a power-off state or a non-power-off state and supplying power to the digital transmission unit;when the elevator is in a non-power-off state, the digital transmission unit receives a first signal sent by the power management equipment;when the elevator is in a power-off state, the digital transmission unit will receive a second signal sent by the power management device.
- The detection system of claim 11, wherein the detection system comprises a sensor,the status parameters include real-time load of the elevator car and real-time status of the elevator car doors;when the elevator is in a power-off state, the digital transmission unit sends out a trapping signal if the digital transmission unit judges that the real-time load of the elevator car is larger 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.
- The detection system of claim 12, wherein the detection system further comprises a sensor,the status parameter also includes a number of outstanding calls in from inside the elevator car;when the elevator is in a power-off state, the digital transmission unit sends out a trapping signal if the digital transmission unit judges that the real-time load of the elevator car is larger 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 judges that the unfinished number of internal calls exists.
- The detection system of claim 13, wherein the detection system comprises a sensor,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 outstanding hall calls, and the people-trapped signal to a remote server.
- The detection system of claim 11, wherein the detection system comprises a sensor,the status parameters include real-time load of the elevator car, real-time status of the elevator car doors, and number of outstanding calls in from inside the elevator car;when the elevator is in a non-power-off state, the digital transmission unit sends out a trapping signal if the digital transmission unit judges that the real-time load of the elevator car is larger than the empty load of the elevator car and that the real-time state of the elevator car door is in a closed state and that the unfinished number of times of internal calling exists.
- The detection system of claim 15, wherein the detection system comprises a sensor,when the elevator is in a non-powered 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 outstanding calls in, and the people-trapped signal to a remote server.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2021/115318 WO2023028753A1 (en) | 2021-08-30 | 2021-08-30 | Method and system for detecting person trapped by elevator car |
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| CN117897351A true CN117897351A (en) | 2024-04-16 |
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| JP2000143110A (en) * | 1998-11-11 | 2000-05-23 | Hitachi Building Systems Co Ltd | Abnormality announcing device of elevator |
| JP2009149413A (en) * | 2007-12-20 | 2009-07-09 | Hitachi Ltd | Elevator control system in abnormality and failure |
| CN102145840B (en) * | 2011-03-28 | 2013-03-06 | 宁波欧菱电梯配件有限公司 | Electric lift control reminding and fault self-diagnosing method and system |
| CN104071668B (en) * | 2014-06-17 | 2016-08-10 | 广西壮族自治区特种设备监督检验院 | A kind of can automatic call with cancel stop ladder and when oppressive the intelligent elevator of automatic alarm |
| CN104803251B (en) * | 2015-05-08 | 2018-03-02 | 上海新时达电气股份有限公司 | The detection method and system of elevator malfunction |
| CN110697529B (en) * | 2019-09-20 | 2021-10-01 | 日立楼宇技术（广州）有限公司 | Method and device for detecting trapping of elevator and computer equipment |
| CN111071892B (en) * | 2019-12-25 | 2023-09-12 | 深圳技术大学 | Elevator power failure monitoring system and method |
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