CN213679326U - Elevator door safety detection system based on TOF light field equipment and elevator - Google Patents
Elevator door safety detection system based on TOF light field equipment and elevator Download PDFInfo
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- CN213679326U CN213679326U CN202021994301.8U CN202021994301U CN213679326U CN 213679326 U CN213679326 U CN 213679326U CN 202021994301 U CN202021994301 U CN 202021994301U CN 213679326 U CN213679326 U CN 213679326U
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Abstract
The utility model relates to a lift-cabin door safety detection system and elevator based on TOF light field equipment, lift-cabin door safety detection system include elevator control system, install in the gap area between elevator sedan-chair door and room door and with the movable TOF light field equipment of sedan-chair door; the TOF light field apparatus comprises: a light source for emitting modulated light for detecting an elevator door frame area; an area array sensor for receiving modulated light reflected by the door frame area of the elevator; the MCU control module is connected with the light source and the area array sensor and is used for acquiring the detection result of the elevator door frame area; an elevator control system includes: a control device; the control device is electrically connected with the MCU control module and controls the movement of the car door and the hall door according to the detection result. The utility model discloses a structure that the system had solved current infrared light curtain technique can't accomplish on the physical installation space that whole light curtain strip is whole to be the light eye, and then has the blind area, causes the problem of pressing from both sides people's clamp accident easily.
Description
Technical Field
The utility model relates to a lift-cabin door structure especially relates to a lift-cabin door safety detection system and elevator based on TOF light field equipment.
Background
The elevator door system door closing retest device comprises a door machine, a door plate, a safety detection plate and an in-place switch, wherein the door machine is connected with the safety detection plate through a lifting rope; when the door is opened, the door machine pulls up the safety detection plate through the lifting rope, so that the safety detection plate is separated from contact with the in-place switch, the in-place switch breaks off a safety loop of the elevator, the door machine drives the door plate to normally open the door, at the moment, a person normally passes through the door, and the light curtain is normally detected; personnel normally close the door after advancing out the car and finishing, door machine release lifting rope puts down the safety inspection board, if there is the foreign matter when closing the door, the safety inspection board can't target in place the striking switch and close, the unable switch-on elevator safety circuit that targets in place, the unable normal operating of elevator, door machine drive door plant opens the door again this moment and stops in order to get rid of the foreign matter, it blocks to be free from the foreign matter to close the door once more as door machine drive door plant, the safety inspection board normally targets in place the striking switch, switch-on elevator safety circuit after the switch closure that targets in place, elevator.
However, the above-mentioned light curtain detection cannot solve the problem of the blind area of the existing infrared light curtain technology. That is, the infrared light curtain technology cannot achieve the effect that all the light curtain strips are light eyes in the physical installation space, so that a blind area exists, and the accident of clamping people and objects is easily caused.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcoming, the deficiency of prior art, the utility model provides a lift-cabin door safety detection system and elevator based on TOF light field equipment, it has solved among the prior art infrared light curtain technique can't accomplish on the physical installation space that whole light curtain strip is whole to be the light eye, and then has the blind area, causes the problem of pressing from both sides the people and press from both sides the thing accident easily.
In order to achieve the above object, the utility model discloses a main technical scheme include:
in a first aspect, the utility model provides an elevator door safety detection system based on TOF light field equipment, which comprises an elevator control system and TOF light field equipment which is arranged in a gap area between an elevator car door and a hoistway door and moves along with an elevator frame;
wherein the TOF light field apparatus comprises:
a light source for emitting modulated light for detecting an elevator door frame area;
an area array sensor for receiving modulated light reflected by the door frame area of the elevator;
the MCU control module is connected with the light source and the area array sensor, processes the light information received by the area array sensor and acquires the detection result of the elevator door frame area;
the elevator control system includes: a control device;
the control device is electrically connected with the MCU control module and controls the movement of the car door and the hall door according to the detection result.
In an alternative implementation, the light source is an infrared LED light source or VCSEL light source emitting 850nm or 940nm infrared light.
In another optional implementation manner, the MCU control module is electrically connected to the control device by means of an elevator master control interface.
In a third alternative implementation, the elevator control system further comprises: the debugging device is used for communicating with external installation equipment;
the MCU control module is electrically connected with the debugging device by means of a debugging interface.
In a fourth optional implementation, the TOF light field apparatus further comprises: a power supply module;
and the power supply module is respectively connected with the light source, the area array sensor and the MCU control module.
In a fifth alternative implementation, the TOF light field apparatus further comprises: the modulation light reflected by the elevator door frame area enters the area array sensor through the lens component.
In a sixth optional implementation manner, the MCU control module includes: the system comprises analog-digital signal conversion equipment, depth data processing equipment and an MCU (microprogrammed control Unit) controller;
the area array sensor is connected with the depth data processing equipment through the analog-to-digital signal conversion equipment, the depth data processing equipment is connected with the MCU through the MIPI bus, and the MCU is electrically connected with the control device.
In a seventh optional implementation manner, the area array sensor is a TOF array sensor composed of a plurality of TOF sensors, and both a horizontal FOV receiving angle and a vertical FOV receiving angle of the TOF array sensor cover an elevator door frame area.
In an eighth alternative implementation manner, the TOF light field device is fixed on the elevator frame through a bracket and does not move along with the opening and closing of the car door, and the horizontal FOV receiving angle of the TOF light field device is determined by the installation position and is greater than 0 degrees and smaller than 90 degrees.
In a ninth alternative implementation, the thickness of the TOF light field apparatus is less than the spacing between the elevator car door and the hoistway door, e.g., 10-20cm in length and width and 1.0cm to 1.5cm in thickness.
In a second aspect, the utility model provides an elevator, including elevator sedan-chair door, and above-mentioned first aspect the lift-cabin door safety detection system based on TOF light field equipment, TOF light field equipment among the lift-cabin door safety detection system sets up on the elevator sedan-chair door.
The utility model discloses a lift-cabin door safety detection system, at sedan-chair door side installation TOF light field equipment, and make TOF light field equipment can be along with the sedan-chair door moves together, can detect whole elevator door frame region for elevator door frame region does not have the detection blind area, from this, has solved among the prior art infrared light curtain technique and can't accomplish on the whole light curtain strip and all be the light eye on physics installation space, and then has the defect of blind area.
The utility model provides a TOF light field equipment is small, simple to operate, and is with low costs. The TOF optical field equipment is connected with an elevator control system through a cable, and transmission of signals is guaranteed not to be delayed.
Drawings
Fig. 1 is a schematic structural diagram of an elevator door safety detection system based on a TOF optical field device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an elevator door safety detection system based on a TOF optical field device according to another embodiment of the present invention;
fig. 3 to fig. 5 are schematic side-mounted views of TOF optical field devices according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an elevator door safety detection system based on a TOF optical field device according to another embodiment of the present invention.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The TOF (time of flight) optical field device is a device for high-speed multiple detection, the detection frequency can be as high as 50FPS (frame per second), and the problem that the surface of a black object, a transparent object or other materials is not sensitive by the traditional infrared light curtain technology can be solved through continuous analysis of a multi-frame optical field depth map.
Example one
As shown in fig. 1, an embodiment of the present invention provides a safety detection system for elevator door based on TOF optical field device, which may include an elevator control system, a TOF optical field device installed in a gap area between an elevator car door and a hall door and moving along with an elevator frame;
the TOF light field apparatus of the present embodiment includes: a light source, an area array sensor and an MCU (microcontroller Unit) control module;
wherein, the light source is used for emitting modulated light for detecting the elevator door frame area; the area array sensor is used for receiving modulated light reflected by an elevator door frame area;
the MCU control module is connected with the light source and the area array sensor, processes the light information received by the area array sensor and acquires the detection result of the elevator door frame area;
the elevator control system includes: a control device;
the control device is electrically connected with the MCU control module and controls the movement of the car door and the hall door according to the detection result.
The utility model discloses a lift-cabin door safety detection system, at sedan-chair door side installation TOF light field equipment, and make TOF light field equipment can be along with the sedan-chair door moves together, can detect whole elevator door frame region for elevator door frame region does not have the detection blind area, from this, has solved among the prior art infrared light curtain technique and can't accomplish on the whole light curtain strip and all be the light eye on physics installation space, and then has the defect of blind area.
Example two
As shown in fig. 2 and fig. 6, the light source in this embodiment may be an infrared LED light source or VCSEL light source emitting infrared light of 850nm or 940 nm. In practical application, the light source can be connected with the MCU control module through the modulation equipment, so that the MCU control module can adjust the modulated light emitted by the light source through the modulation equipment.
The MCU control module of this embodiment includes: the system comprises analog-digital signal conversion equipment, depth data processing equipment and an MCU (microprogrammed control Unit) controller;
the area array sensor is connected with the depth data processing equipment through the analog-to-digital signal conversion equipment, the depth data processing equipment is connected with the MCU through the MIPI bus, the MCU is electrically connected with the control device, and the MCU is connected with the modulation equipment through the SPI interface so as to adjust the modulated light emitted by the light source through the modulation equipment.
The MCU controller of this embodiment is an embedded system, which runs an operating system and an application program, controls a depth data processing device and a light source, and simultaneously provides the processed data to an elevator control system through an elevator master control interface, or transmits the processed data to a debugging device (e.g., a debugging upper computer, etc.) through a debugging interface.
Further, the area array sensor in this embodiment may be a TOF array sensor composed of a plurality of TOF sensors. The TOF sensor is a CMOS sensor or a CCD.
It should be noted that the TOF light field apparatus further includes: the lens assembly is arranged in front of the area array sensor, and modulated light reflected by the elevator door frame area of the embodiment enters the area array sensor through the lens assembly.
Current TOF light field devices also include: a power supply module; the power module is respectively connected with the light source, the area array sensor and the MCU control module and used for providing electric energy for the light source, the area array sensor and the MCU control module.
Furthermore, the MCU control module shown in fig. 2 is electrically connected to the control means by means of an elevator master interface.
In practical application, after TOF light field equipment is installed, debugging is needed, and then the elevator control system further includes: the debugging device is used for communicating with external installation equipment; the MCU control module is electrically connected with the debugging device by means of a debugging interface, as shown in FIG. 2.
The elevator control system transmits the parameters to be configured to the control device, and the control device configures the area array sensor and the MCU control module.
For example, when the control device starts the TOF light field device, the light source emits modulated light with a preset frequency, the area array sensor receives the modulated light reflected by the elevator door frame area, the modulated light passes through the analog-to-digital signal conversion device and is processed by the depth data processing device, the processed image information is read back to the MCU by the mipi (mobile Industry Processor interface) bus, the MCU calculates the depth data of the current elevator door frame range by using a phase shift or time algorithm and compares the depth data with the elevator door frame depth image calibrated in advance to obtain the detection result of the obstacle, and the detection result is transmitted to the control device to control the car door.
As shown in fig. 3 and fig. 4, the installation position of the TOF light field device is schematic, and the minimum horizontal FOV (field angle of view) receiving angle of the TOF light field device in this embodiment covers the range of the elevator car door frame, which is determined by the installation position. For example, the horizontal FOV receive angle is 78 ° or greater and 90 ° or less.
In one possible implementation, the horizontal FOV acceptance angle is greater than 0 ° and less than 90 °, as shown in fig. 4.
In particular, because the gap between the car door and the hall door is relatively small, the thickness of the TOF light field apparatus in this embodiment is less than 20mm, and it is fixed to the frame by means of a bracket and does not move with the opening and closing of the car door.
Specifically, the thickness of the TOF light field equipment is smaller than the distance between an elevator car door and a hoistway door, the length and the width of the TOF light field equipment are 10-20cm, and the thickness of the TOF light field equipment is 1.0 cm-1.5 cm. Meanwhile, the height of the elevator door frame is 2 meters, the horizontal FOV receiving angle of the TOF light field equipment is 78 degrees, and when the TOF light field equipment is installed above the side of the car door, the distance between the TOF light field equipment and the nearest side of the elevator door frame is 0.42 meter, as shown in figure 5.
In the embodiment, by using a side-mounted installation mode and setting a proper installation height and an appropriate inclination angle, the TOF optical field device with a smaller horizontal FOV receiving angle can also realize non-blind area detection. The side-mounted elevator has the advantage that the non-blind area coverage of the safety range of the elevator can be realized through the horizontal FOV receiving angle of the light field which is less than 90 degrees.
The TOF light field equipment in the embodiment is small in size, convenient to install and low in cost. The TOF optical field equipment is connected with an elevator control system through a cable, and transmission of signals is guaranteed not to be delayed.
According to the utility model discloses an on the other hand, this novel still provide an elevator, elevator door safety detection system including elevator sedan-chair door and the arbitrary embodiment of the aforesaid, TOF light field equipment among the elevator door safety detection system sets up on the elevator sedan-chair door, from this, the elevator of this embodiment does not have the blind area in the use, its better assurance the safety in utilization of elevator.
In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, the claims should be construed to include preferred embodiments and all changes and modifications that fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention should also be covered thereby.
Claims (10)
1. The utility model provides an elevator door safety inspection system based on TOF light field equipment, includes elevator control system, its characterized in that still includes: the TOF light field equipment is arranged in a gap area between the elevator car door and the hoistway door and moves along with the elevator frame;
wherein the TOF light field apparatus comprises:
a light source for emitting modulated light for detecting an elevator door frame area;
an area array sensor for receiving modulated light reflected by the door frame area of the elevator;
the MCU control module is connected with the light source and the area array sensor, processes the light information received by the area array sensor and acquires the detection result of the elevator door frame area;
the elevator control system includes: a control device;
the control device is electrically connected with the MCU control module and controls the movement of the car door and the hall door according to the detection result.
2. The elevator door safety detection system based on TOF light field equipment of claim 1,
the light source is an infrared LED light source or a VCSEL light source which emits 850nm or 940nm infrared light; and/or the presence of a gas in the gas,
the MCU control module is electrically connected with the control device by means of an elevator master control interface.
3. The system of claim 1, wherein the elevator control system further comprises: the debugging device is used for communicating with external installation equipment;
the MCU control module is electrically connected with the debugging device by means of a debugging interface.
4. The elevator door safety detection system based on TOF light field equipment according to claim 1, wherein the TOF light field equipment further comprises: a power supply module;
and the power supply module is respectively connected with the light source, the area array sensor and the MCU control module.
5. The elevator door safety detection system based on TOF light field equipment according to claim 4, wherein the TOF light field equipment further comprises: the modulation light reflected by the elevator door frame area enters the area array sensor through the lens component.
6. The elevator door safety detection system based on TOF light field equipment according to claim 1 wherein the MCU control module comprises: the system comprises analog-digital signal conversion equipment, depth data processing equipment and an MCU (microprogrammed control Unit) controller;
the area array sensor is connected with the depth data processing equipment through the analog-to-digital signal conversion equipment, the depth data processing equipment is connected with the MCU controller through the MIPI bus, and the MCU controller is electrically connected with the control device.
7. The elevator door safety detection system based on TOF light field equipment according to claim 5, wherein the area array sensor is a TOF array sensor composed of a plurality of TOF sensors, and both horizontal FOV receiving angle and vertical FOV receiving angle of the TOF array sensor cover elevator door frame area.
8. The elevator door safety detection system based on TOF light field equipment according to claim 1, wherein the TOF light field equipment is fixed on the elevator frame by a bracket and does not move with the opening and closing of the car door, and the minimum horizontal FOV receiving angle of the TOF light field equipment determined by means of the installation position is greater than 0 ° and less than 90 °.
9. The elevator door safety detection system based on TOF light field equipment of any one of claims 1 to 8, wherein thickness of TOF light field equipment is less than the distance between elevator car door and landing door.
10. An elevator, comprising an elevator car door, and characterized by further comprising the TOF optical field device-based elevator door safety detection system of any one of claims 1 to 9, wherein the TOF optical field device in the elevator door safety detection system is arranged on the elevator car door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021994301.8U CN213679326U (en) | 2020-09-11 | 2020-09-11 | Elevator door safety detection system based on TOF light field equipment and elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021994301.8U CN213679326U (en) | 2020-09-11 | 2020-09-11 | Elevator door safety detection system based on TOF light field equipment and elevator |
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| Publication Number | Publication Date |
|---|---|
| CN213679326U true CN213679326U (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021994301.8U Active CN213679326U (en) | 2020-09-11 | 2020-09-11 | Elevator door safety detection system based on TOF light field equipment and elevator |
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| Country | Link |
|---|---|
| CN (1) | CN213679326U (en) |
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- 2020-09-11 CN CN202021994301.8U patent/CN213679326U/en active Active
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