Safety device for passenger elevator
By designing safety equipment including determination devices, attitude determination devices and transmission devices in the passenger elevator, the problem of being unable to accurately identify a single person in the elevator car and determine his attitude in the prior art, the effect of automatic alarm and timely measures is achieved, and the safety of passengers is improved and cost savings are saved.
Patent Information
- Application Number
- CN202411809908.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-12-11
- Filing Date
- 2024-12-10
- Publication Date
- 2025-06-13
AI Technical Summary
There is a lack of effective safety equipment in existing passenger elevators to detect and respond to the status of personnel in elevator cars in medical emergencies, especially the inability to accurately identify a single person and determine his or her posture, resulting in the inability to promptly call the police and take corresponding measures.
A safety device is designed, including a determination device, an attitude determination device and a transmission device. Determine the device identifies the number of people in the elevator car through a 2D or 3D camera, acceleration measurement device or light barrier system. The attitude determination device identifies and monitors the passenger's lying or squatting posture through a camera, grating or radar sensor, and records the duration. If the determination device detects a single person and the posture determination device confirms that the person is in a lying or squatting position for a period of time, the transmission device transmits the signal to the supervision center.
This safety device can effectively improve passenger safety, provide automatic alarms, prevent abuse, thereby saving costs and ensuring timely measures are taken in medical emergencies.
Smart Images
Figure CN120135894A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a safety device for a passenger elevator in which a person suffers a medical emergency. Background Art
[0002] Safety devices of the type described are known from the prior art, which provide an alarm button in the elevator car for a medical emergency of a person in the elevator car. Summary of the Invention
[0003] The object of the present invention is to provide an improved safety device of the type described.
[0004] This object is achieved starting from a safety device of the type described at the beginning by a safety device according to the following solution. Advantageous configurations are given in the following solution.
[0005] The safety device according to the present invention is a safety device for a passenger elevator having an elevator car, and has: a presence determination device for determining the presence of exactly only one person in the elevator car; a posture determination device for determining the lying or squatting posture of this person and the duration starting from the occurrence of the lying or squatting posture; and a transmission device for transmitting a signal to a supervision center. Here, if the presence determination device determines that exactly only one unique person is in the elevator car and the posture determination device determines the lying or squatting posture of this person and a determined duration has elapsed, during which the lying or squatting posture has occurred, then the transmission device transmits a signal.
[0006] The advantages that the safety device can achieve are to improve the safety of passengers and / or provide an automatic alarm, and / or prevent abuse, whereby costs can be saved.
[0007] The presence determination device can be a 2D or 3D camera in the elevator car, which monitors the space of the elevator car, and the 2D or 3D camera has an image recognition device that recognizes people and the number of people. The presence determination device can be a 2D or 3D camera that monitors the entrance of the elevator car and recognizes people and their moving directions into or out of the elevator car, and the 2D or 3D camera calculates the number of people in the elevator from the moving directions. The presence determination device can be the following system that detects the horizontal movement of the car when people enter or leave the elevator car through an acceleration measuring device, and the system calculates the number of people in the elevator car from the number of entries and exits. The presence determination device can be a system composed of two light barriers, which are successively positioned in the passage of the entrance of the elevator car in the passing direction, and the system detects the moving direction of people entering or leaving the elevator car through detecting the time offset, and the presence determination device determines the number of people in the elevator car by calculating the number of entries or exits.
[0008] The posture determination device can be a 2D or 3D camera that monitors the space elevator car and has an image recognition device that recognizes the height extension or lying posture of a person. The posture determination device can be a grating or radar sensor in the elevator car, which monitors a plane parallel to the ground at a determined height and determines the lying posture or squatting posture of a person in the elevator car when not detected or when changing from detected to not detected.
[0009] The transmission device can be a wired or wireless transmission device.
[0010] Preferably, the safety device includes a timer that determines a duration starting from the time point when the posture determination device has determined the lying posture or squatting posture of this person.
[0011] Preferably, the posture determination device determines the lying posture or squatting posture of this person by means of a first threshold value less than the height of this person.
[0012] This can improve the reliability of the safety device.
[0013] Preferably, the posture determination device determines the lying posture or squatting posture of this person by means of the posture determination device determining that the height of this person has changed by a determined second threshold value since entering the car.
[0014] This can improve the reliability of the safety device.
[0015] Preferably, the safety device has an interrogation device for interrogating the person about their state and for transmitting or not transmitting a signal depending on the response or the absence of a response.
[0016] The interrogation device can be an intercom which is activated first, rather than the signal being activated. The interrogation device can be an automatic interrogation which interrogates for confirmation of an emergency. The interrogation device can be a camera which is activated first, rather than the signal being activated. The interrogation device can comprise an intercom and a camera.
[0017] This can increase the reliability of the safety device.
[0018] Preferably, the safety device has a tracking device which tracks the position of the person in the elevator car and transmits the position to the attitude determination device.
[0019] This can increase the reliability of the safety device.
[0020] For combinations of features not mentioned, the correspondingly mentioned advantages can also be achieved. Description of the Drawings
[0021] Embodiments of the invention are shown in the drawings and are set out in detail below. The same reference numerals in the various drawings denote corresponding elements to one another. The drawings show:
[0022] Figure 1 A flow chart for the safety device. Detailed Description
[0023] Figure 1 A flow chart showing the safety device 10. The process starts with the presence determination device 11.
[0024] The presence determination device determines whether exactly only one person is in the elevator car. If no one or more than one person is in the elevator car, the process starts again with the presence determination device 11. However, if the presence determination device detects that exactly only one person is in the elevator car, the process continues to the attitude determination device 12.
[0025] The attitude determination device 12 determines in a first step 12a whether the height extension of the person has decreased since entering the elevator car and, if necessary, in a second step 12b determines whether the height extension of the person is less than a minimum value. If the attitude determination device does not detect that the height extension of the person has decreased since entering the elevator car or that the height extension of the person is less than the minimum value, the process returns again to the presence determination device 11. However, if the attitude determination device detects that the height extension of the person has decreased since entering the elevator car and that the height extension of the person is less than the minimum value, the process continues to the interrogation device 13.
[0026] The inquiry device 13 inquires about its status from this person through a speaker and records the person's response through a microphone. If this person denies an emergency, the process starts again with the presence determination device 11. If this person confirms an emergency or if no response is made, the process continues to the transmission device 14.
[0027] The transmission device 14 wirelessly transmits an alarm signal to a server via the Internet. The server notifies the service company of what rescue measures to take.
[0028] List of reference numerals
[0029] 10 Flowchart of the safety device
[0030] 11 Presence determination device
[0031] 12 Posture determination device
[0032] 12a First step of the posture determination device
[0033] 12b Second step of the posture determination device
[0034] 13 Inquiry device
[0035] 14 Transmission device.
Claims
1. A safety device, - It is used in a passenger elevator with an elevator car, the safety device having: - Presence determination means for determining the presence of only one person in the elevator car; - a posture determination device for determining the person's lying posture or squatting posture and the duration of the lying posture or squatting posture; and - a transmission device for transmitting the signal to a monitoring center, It is characterized in that -if - the presence determination means determines that only one unique person is in the elevator car, and - the posture determination means determines that the person is in a lying position or a squatting position, and - a determined duration has expired, - said lying down posture or said squatting posture has occurred during said duration, -Then the transmission device transmits the signal.
2. The safety device according to claim 1, characterized in that - the safety device comprises a timer, - the timer determines the duration from the following point in time, The posture determination device has determined that the person is in a lying position or a squatting position since that point in time.
3. A safety device according to any one of the preceding claims, characterised in that - The posture determination device determines the person's lying posture or squatting posture in the following way, namely - is smaller than a first threshold of the person's height.
4. A safety device according to any one of the preceding claims, characterised in that - The posture determination device determines the person's lying posture or squatting posture in the following way, namely - the posture determination means determines that the height of the person has changed by a determined second threshold value since entering the car.
5. A safety device according to any one of the preceding claims, characterised in that - The safety equipment - having an interrogation device, - in order to ask this person about his status, - and transmit or not transmit a signal depending on the answer or lack of an answer.
6. A safety device according to any one of the preceding claims, characterised in that - The safety equipment - have a tracking device, The tracking device tracks the position of a person in the elevator car and transmits the position to the posture determination device.