Elevator track detection system

Abstract

The embodiment of the present invention provides an elevator track detection system, which relates to the field of elevator technology. The elevator track detection system includes an image collector, a detection unit, a control unit and a structured light source. The detection unit is electrically connected to the control unit, the control unit is electrically connected to the image collector, the detection unit and the image collector are installed on the elevator car, the structured light source is installed on the elevator car, and the structured light source is used to irradiate linear light to the elevator track. The detection unit is used to detect the running distance of the elevator car on the elevator track; the control unit controls the image collector to collect image information of the linear light corresponding to the elevator car on the elevator track according to the running distance. The structured light source ranging technology is applied to the elevator track ranging, and it can automatically collect data without manual operation, which reduces the error of manual operation and improves the accuracy of elevator track detection.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to an elevator track detection system. Background Art

[0002] With the development of economy, the use of elevators is increasing. In recent years, elevator safety accidents have occurred frequently. In the final analysis, there are three main reasons for such problems. The first is the defects of the elevator system itself, the second is the uneven professional quality of maintenance personnel, and the third is the backwardness of elevator safety detection technology. Among them, the elevator track is a major factor that directly affects the safety of the elevator.

[0003] Currently, elevator inspection in the existing technology is mainly performed manually, which is inefficient and has poor accuracy. Summary of the invention

[0004] The objectives of the present invention include, for example, providing an elevator track detection system that can automatically collect data without manual operation, thereby reducing errors caused by manual operation and improving the accuracy of elevator track detection.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, an embodiment provides an elevator track detection system, which is installed on an elevator car, and the elevator car is slidably installed on the elevator track. The elevator track detection system includes: an image collector, a detection unit, a control unit, and a structured light source, the detection unit is electrically connected to the control unit, the control unit is electrically connected to the image collector, the detection unit and the image collector are installed on the elevator car, and the structured light source is installed on the elevator car;

[0007] The structured light source is used to irradiate linear light toward the elevator track;

[0008] The detection unit is used to detect the running distance of the elevator car on the elevator track;

[0009] The control unit controls the image collector to collect image information of the linear light corresponding to the elevator car on the elevator track according to the running distance.

[0010] In an optional embodiment, the elevator track detection system further includes a shell, the image collector and the structured light source are both mounted on the shell, and the image collector is mounted on a side of the structured light source away from the elevator car.

[0011] In an optional embodiment, the image collector is arranged at an angle to the structured light source.

[0012] In an optional embodiment, the detection unit is used to generate a pulse signal when detecting that the elevator car moves a preset distance relative to the elevator track;

[0013] The control unit is used to control the image collector to collect the image information of the elevator track corresponding to the elevator car after receiving the pulse signal.

[0014] In an optional embodiment, the elevator track detection system also includes a shell and a parallel detection component, the parallel detection component is installed on the shell, the detection unit, the control unit, the structured light source and the image collector are all installed on the shell, and the parallel detection component is used to detect the parallelism of the shell with another shell of the elevator track detection system.

[0015] In an optional embodiment, the parallel detection assembly includes a light source and a reflector, wherein the light source and the reflector are mounted on the shell, the light source is used to emit detection light, and the reflector is used to reflect the detection light emitted by the light source of another elevator track detection system.

[0016] In an optional embodiment, the light source component is installed on one side of the housing, and the reflective component is installed on the other side of the housing opposite to the light source component.

[0017] In an optional embodiment, the elevator detection track also includes a processing terminal, which is electrically connected to the image collector and is used to receive a plurality of image information sent by the image collector, and calculate a plurality of track distances of the elevator track based on the received plurality of image information, and calculate the difference between the maximum and minimum values ​​of the plurality of track distances.

[0018] In an optional embodiment, the processing terminal is further used to obtain one of the coordinate points of the reflected light in the image information after receiving the image information, and determine the coordinates of the coordinate point in a preset coordinate system, so as to calculate the track distance.

[0019] In an optional embodiment, the elevator track detection system also includes a photoelectric sensor, which is installed on the elevator car and is used to detect an arrival signal of an elevator support during the movement of the elevator car, wherein the arrival signal indicates that the elevator car has moved to the elevator support, and the elevator support is installed on the elevator track.

[0020] Beneficial effects of the embodiments of the present invention: The elevator track detection system includes an image collector, a detection unit, a control unit and a structured light source. The detection unit is electrically connected to the control unit, the control unit is electrically connected to the image collector, the detection unit and the image collector are installed on the elevator car, the structured light source is installed on the elevator car, and the structured light source is used to irradiate linear light to the elevator track. The detection unit is used to detect the running distance of the elevator car on the elevator track; the control unit controls the image collector to collect image information of the linear light corresponding to the elevator car on the elevator track according to the running distance.

[0021] In an embodiment of the present invention, a detection unit detects the running distance of the elevator car sliding relative to the elevator track, and transmits the running distance to a control unit, and the control unit controls an image collector to collect image information of linear light on the elevator track corresponding to the elevator car according to the moving distance. In an embodiment of the present invention, an image collector is used in conjunction with a structured light source ranging technology for elevator track ranging. When the elevator car moves a certain distance, the image collector collects image information of linear light on the elevator track corresponding to the current position of the elevator car. The image information of linear light on the elevator track at the current position can be collected during the operation of the elevator car. It can be automatically collected without manual operation, which reduces the error of manual operation and improves the accuracy of elevator track detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A circuit diagram of an elevator track detection system provided by an embodiment of the present invention;

[0024] Figure 2 A circuit diagram of two elevator track detection systems provided in an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the structure of an elevator track detection system from a first perspective provided by an embodiment of the present invention;

[0026] Figure 4 A schematic structural diagram of an elevator track detection system from a first perspective provided by an embodiment of the present invention.

[0027] Icons: 100 - elevator track detection system; 110 - image acquisition device; 120 - detection unit; 130 - control unit; 140 - housing; 150 - parallel detection assembly; 152 - light source; 154 - reflector; 160 - angle sensor; 170 - photoelectric sensor; 180 - structured light source; 190 - acceleration sensor; 192 - gyroscope sensor; 194 - processing terminal. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0033] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0034] Example

[0035] See also Figure 1This embodiment provides an elevator track detection system 100. The elevator track detection system 100 provided in this embodiment can reduce the error of manual operation and improve the accuracy of elevator track detection.

[0036] The elevator track detection system 100 provided in this embodiment is installed on the elevator car, and the elevator car is slidably installed on the elevator track. When the elevator car slides relative to the elevator track, the elevator track detection system 100 slides relative to the track following the elevator car.

[0037] Please refer to Figure 1 and Figure 3 The elevator track detection system 100 includes: an image collector 110, a detection unit 120, a control unit 130 and a structured light source 180, the detection unit 120 is electrically connected to the control unit 130, the control unit 130 is electrically connected to the image collector 110, the detection unit 120 and the image collector 110 are installed on the elevator car, and the structured light source 180 is installed on the elevator car;

[0038] The structured light source 180 is used to irradiate linear light toward the elevator track.

[0039] The detection unit 120 is used to detect the running distance of the elevator car on the elevator track;

[0040] The control unit 130 controls the image collector 110 to collect image information of the linear light corresponding to the elevator car on the elevator track according to the running distance.

[0041] In this embodiment, the detection unit 120 detects the running distance of the elevator car sliding relative to the elevator track, and transmits the running distance to the control unit 130. The control unit 130 controls the image collector 110 to collect image information of the linear light corresponding to the elevator car on the elevator track according to the moving distance. In this embodiment, the image collector 110 is used in conjunction with the structured light source 180 distance measurement technology for elevator track distance measurement. When the elevator car moves a certain distance, the image collector 110 collects the image information of the linear light corresponding to the current position of the elevator car on the elevator track. The image information of the linear light at the current position on the elevator track can be collected during the operation of the elevator car. It can be automatically collected without manual operation, which reduces the error of manual operation and improves the accuracy of elevator track detection.

[0042] In this embodiment, the detection unit 120 is used to generate a pulse signal when detecting that the elevator car runs a preset distance relative to the elevator track;

[0043] The control unit 130 is used to control the image collector 110 to collect image information of the elevator track corresponding to the elevator car after receiving the pulse signal. In this embodiment, during the movement of the elevator car relative to the elevator track, a preset distance is set. When the elevator car moves a preset distance relative to the elevator track, the detection unit 120 generates a pulse signal. When the control unit 130 receives the pulse signal, it controls the image collector 110 to collect image information of the elevator track at that location.

[0044] In this embodiment, the detection unit 120 may be a pulse encoder. When the elevator car runs a preset distance relative to the elevator track, the pulse encoder rotates one circle. The pulse encoder sends a pulse signal to the control unit 130 every time it completes one circle.

[0045] In this embodiment, the elevator track detection system 100 further includes a housing 140 , and the image collector 110 and the structured light source 180 are both mounted on the housing 140 , and the image collector 110 is mounted on a side of the structured light source 180 away from the elevator car.

[0046] In this embodiment, the housing 140 is mounted on a car roof beam, wherein the car roof beam is disposed above the elevator car.

[0047] In this embodiment, when in working state, the structured light source 180 is installed below the image collector 110. After the structured light source 180 emits linear light, a reflected light will appear on the elevator track. The image collector 110 collects image information of the linear light on the elevator track, and the track distance from the image collector 110 to the elevator track can be calculated based on the collected image information.

[0048] In this embodiment, the structured light source 180 and the image collector 110 are arranged at an angle, and different angles may be used according to different application scenarios.

[0049] In this embodiment, the structured light source 180 is arranged horizontally, and the image collector 110 is arranged obliquely, that is, the image collector 110 looks down at the shooting light path, and can completely collect the light path of the linear light on the elevator track.

[0050] In this embodiment, the structured light source 180 may be one of a line light source, a point light source and a grating. The image collector 110 is an industrial camera.

[0051] In this embodiment, the elevator track detection system 100 also includes a processing terminal 194, which is electrically connected to the image collector 110, and is used to receive multiple image information sent by the image collector 110, and calculate multiple track distances of the elevator track based on the received multiple image information, and calculate the difference between the maximum and minimum values ​​of the multiple track distances.

[0052] See also Figure 2 In this embodiment, there are two elevator tracks, the two elevator tracks are arranged opposite to each other, and the elevator car is installed between the two elevator tracks. An image collector 110 of an elevator track detection system 100 collects image information of one elevator track correspondingly, and sends the image information to the processing terminal 194. After receiving multiple image information of the two elevator tracks collected by the two image collectors 110, the processing terminal 194 calculates the track distance between the two elevator tracks according to the multiple image information, and calculates the difference between the maximum value and the minimum value among the multiple track distances.

[0053] It should be noted that, in the present embodiment, one elevator track detection system 100 corresponds to one elevator track. Among the two elevator track detection systems 100 corresponding to the two elevator tracks, only one elevator track detection system 100 may include a processing terminal 194. The control unit 130 of the other elevator track detection system 100 is electrically connected to the control unit 130 of the elevator track detection system 100 having the processing terminal 194, and the image information detected by the image collector 110 of the elevator track detection system 100 is sent to the processing terminal 194 of the elevator track detection system 100 having the processing terminal 194. After receiving multiple image information of the two elevator tracks, the processing terminal 194 derives the track distance between the two elevator tracks according to the multiple image information of the two elevator tracks, and calculates the difference between the maximum value and the minimum value.

[0054] In this embodiment, the image collectors 110 of the two elevator track detection systems 100 can be directly electrically connected to the processing terminal 194 and acquire image information through the triggering of the same detection unit 120 .

[0055] In this embodiment, the processing terminal 194 is also used to select coordinate points and angles in the reflected light in the received image information, calculate the coordinates of the coordinate points in the preset coordinate system, and obtain the distance and angle between the shell 140 and the corresponding elevator track based on the coordinates, thereby calculating the track distance and angle of the two elevator tracks.

[0056] In this embodiment, the processing terminal 194 is electrically connected to the control unit 130 .

[0057] In this embodiment, through the analysis of the processing terminal 194, there is no need for people to read, write, and fill in data, thus reducing human errors.

[0058] See also Figure 3 and Figure 4In this embodiment, the elevator track detection system 100 also includes a parallel detection component 150, which is installed on the shell 140. The detection unit 120, the control unit 130 and the image collector 110 are all installed on the shell 140. The parallel detection component 150 is used to detect the parallelism between the shell 140 and the shell 140 of another elevator track detection system 100.

[0059] In this embodiment, one elevator track detection system 100 is provided for each elevator, and the parallel detection component 150 is used to detect whether two elevator track detection systems 100 are provided in parallel, thereby ensuring that under the same pulse signal, the two image collectors 110 collect image information of two elevator tracks on the same horizontal line.

[0060] In this embodiment, the parallel detection component 150 includes a light source component 152 and a reflector component 154, which are installed on the shell 140. The light source component 152 is used to emit detection light, and the reflector component 154 is used to reflect the detection light emitted by the light source component 152 of another elevator track detection system 100.

[0061] In this embodiment, after the light source 152 sends out the detection light, the detection light is emitted by the reflector 154 of another elevator track detection system 100. When the two detection lights overlap, it indicates that the two shells 140 are coplanar based on the detection light.

[0062] In this embodiment, the light source component 152 is installed on one side of the housing 140 , and the reflective component 154 is installed on the other side of the housing 140 opposite to the light source component 152 .

[0063] In this embodiment, the reflectors 154 of the two elevator track detection systems 100 are arranged facing each other.

[0064] In this embodiment, the light source 152 is a ring-shaped light source.

[0065] In this embodiment, when one of the light sources 152 emits annular detection light, it is reflected by the reflector 154 of another elevator track detection system 100. When the light reflected by the two reflectors 154 overlap, the two devices are on the same plane based on the detection light.

[0066] In this embodiment, the detection lights of the two track detection systems can detect whether the two housings 140 are level, and the other can detect whether there is misalignment between the two housings 140. When there is misalignment between the two housings 140, the error needs to be compensated in the process of calculating the track distance.

[0067] Please continue reading Figure 1In this embodiment, the elevator track detection system 100 also includes a photoelectric sensor 170, which is installed on the elevator car and is used to detect an arrival signal of the elevator bracket during the movement of the elevator car, wherein the arrival signal indicates that the elevator car moves to the elevator bracket, and the elevator bracket is installed on the elevator track.

[0068] In this embodiment, the photoelectric sensor 170 is electrically connected to the control unit 130. When the elevator car moves to the elevator bracket, the elevator car can detect the arrival signal of the elevator bracket and send it to the control unit 130. The processing terminal 194 can determine the number of elevator brackets according to the number of received arrival signals. And calculate the distance between two adjacent elevator brackets according to the interval time between two received arrival signals.

[0069] In this embodiment, the photoelectric sensor 170 is integrated in the housing 140 .

[0070] In this embodiment, the elevator track detection system 100 further includes an angle sensor 160 . The angle sensor 160 is installed on the elevator car and is used to detect the inclination angle of the elevator track.

[0071] In this embodiment, the angle sensor 160 is integrated into the housing 140 .

[0072] In this embodiment, the angle sensor 160 is electrically connected to the control unit 130 to detect the inclination angle of the elevator track and send the inclination angle to the processing terminal 194 through the control unit 130, so as to measure the stability of the elevator car during operation.

[0073] In this embodiment, the elevator track detection system 100 also includes an acceleration sensor 190, which is installed on the elevator car and can detect the up, down, front, back, left and right accelerations of the elevator car when it slides relative to the elevator track, that is, the accelerations in the three vector directions of X, Y and Z.

[0074] In this embodiment, the acceleration sensor 190 is integrated in the housing 140 .

[0075] In this embodiment, the acceleration sensor 190 is electrically connected to the control unit 130 to detect the acceleration value of the elevator car during movement and transmit the acceleration to the processing terminal 194 through the control unit 130.

[0076] The processing terminal 194 is used to calculate the deflection displacement in the corresponding direction when the acceleration value is received, so as to compensate for the calculated track distance error.

[0077] In this embodiment, after receiving the acceleration value, the processing terminal 194 uses quadratic integration to calculate the offset of the elevator car in this direction. The offset is the offset displacement of the elevator car, which can be compensated when calculating the track distance of the elevator track.

[0078] In this embodiment, the elevator track detection system 100 also includes a gyroscope sensor 192, which is connected to the processing terminal 194 through the control unit 130. The gyroscope sensor 192 is used to collect the swing information of the elevator car during the sliding process relative to the elevator track. The processing terminal 194 can depict the motion trajectory of the elevator car based on the received swing information.

[0079] In summary, the elevator track detection system 100 provided in this embodiment, in this embodiment, the detection unit 120 detects the running distance of the elevator car sliding relative to the elevator track, and transmits the running distance to the control unit 130, and the control unit 130 controls the image collector 110 to collect image information of the elevator track corresponding to the elevator car according to the moving distance. In this embodiment, when the elevator car moves a certain distance, the image collector 110 collects the image information of the elevator track corresponding to the current position of the elevator car, and the image information of the elevator track at the current position can be collected during the operation of the elevator car, and can be automatically collected without manual operation, thereby reducing the error of manual operation and improving the accuracy of elevator track detection.

[0080] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An elevator track detection system, installed on an elevator car, wherein the elevator car is slidably installed on the elevator track, characterized in that: The elevator track detection system comprises: an image collector, a detection unit, a control unit and a structured light source, wherein the detection unit is electrically connected to the control unit, the control unit is electrically connected to the image collector, the detection unit and the image collector are installed on the elevator car, and the structured light source is installed on the elevator car; The structured light source is used to irradiate linear light toward the elevator track; The detection unit is used to detect the running distance of the elevator car on the elevator track; The control unit controls the image collector to collect image information of the linear light corresponding to the elevator car on the elevator track according to the running distance; The elevator track detection system further comprises a housing and a parallel detection component, wherein the parallel detection component is mounted on the housing and is used to detect the parallelism between the housing and another housing of the elevator track detection system; The parallel detection assembly includes a light source and a reflector, wherein the light source and the reflector are mounted on the housing, the light source is used to emit detection light, and the reflector is used to reflect the detection light emitted by the light source of another elevator track detection system; Two detection lights of the track detection system, one can detect whether the two shells are level, and the other can detect whether the two shells are misaligned. When the two shells are misaligned, the error needs to be compensated in the process of calculating the track distance; The elevator track detection system further includes a processing terminal, the image collector is electrically connected to the processing terminal, and is used to receive a plurality of the image information sent by the image collector, and calculate a plurality of track distances of the elevator track according to the received plurality of the image information, and calculate the difference between the maximum value and the minimum value of the plurality of the track distances; The processing terminal is also used to obtain one of the coordinate points of the reflected light in the image information after receiving the image information, and determine the coordinates of the coordinate point in a preset coordinate system, so as to calculate the track distance.

2. The elevator track detection system according to claim 1, characterized in that: The image collector is installed on a side of the structured light source away from the elevator car.

3. The elevator track detection system according to claim 2, characterized in that: The image collector is arranged at an angle to the structured light source.

4. The elevator track detection system according to claim 1, characterized in that: The detection unit is used to generate a pulse signal when detecting that the elevator car moves a preset distance relative to the elevator track; The control unit is used to control the image collector to collect the image information of the elevator track corresponding to the elevator car after receiving the pulse signal.

5. The elevator track detection system according to claim 1, characterized in that: The light source component is installed on one side of the housing, and the reflector component is installed on the other side of the housing opposite to the light source component.

6. The elevator track detection system according to claim 1, characterized in that: The elevator track detection system also includes a photoelectric sensor, which is installed on the elevator car and is used to detect an in-place signal of an elevator bracket during the movement of the elevator car, wherein the in-place signal indicates that the elevator car moves to the elevator bracket, and the elevator bracket is installed on the elevator track.

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