Handle position controller based on laser ranging

Abstract

The embodiment of the present application discloses a handle type position controller based on laser ranging, which comprises a handle rod, a rotating plate, a position representation module and a laser ranging module; the rotating plate is connected with the handle rod, and the handle rod is used to drive the rotating plate to rotate; the position representation module is arranged on the rotating plate; the position representation module comprises a plurality of position representation planes with different distances from the surface of the rotating plate, and each position representation plane corresponds to a handle position; the laser ranging module is used to detect the distance from the position representation plane by emitting a laser beam perpendicular to the surface of the rotating plate, so as to determine the current handle position according to the currently detected distance. The present application adopts laser ranging to replace the traditional mechanical transmission relying on gear meshing to change the sensor output, reduces the error caused by the wear of gear meshing, and improves the control accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit, in particular to a handle position controller based on laser ranging. BACKGROUND

[0002] The handle position controller is a control device that uses different positions of the handle to represent different actions. For example, the brake controller used in the braking system of a locomotive is a typical handle position controller, which is designed with operating position, initial braking position, braking zone, full braking position, suppression position, reconnection position, emergency position, etc. By pushing the handle to different positions, different functions such as initial braking, full braking, and emergency braking can be achieved. The locomotive traction handle is also a typical handle position controller. By pushing the handle, the traction and electric power adjustment can be achieved. Similarly, there are also such handle position controllers on high-speed rail, subway, and some tramcars for controlling the application of power or braking force.

[0003] At present, most of the handle position controllers used adopt potentiometers, encoders, and other stepless output devices as sensors to sense the change of the handle position. The basic principle is to change the handle position through a gear mechanism to drive the rotation of the sensing component and change the output of the sensor. The change of the sensor output is through mechanical transmission of gear meshing, which will inevitably cause system error due to wear after long-term use. The prior art lacks a more accurate handle position controller.

[0004] This section aims to provide background or context for the embodiments of the present application stated in the claims. The description herein is not admitted to be prior art merely because it is included in this section. SUMMARY

[0005] To solve at least one of the technical problems in the background art, the present application proposes a handle position controller based on laser ranging, which specifically comprises: a handle rod, a rotating plate, a position representation module, and a laser ranging module.

[0006] The rotating plate is connected to the handle rod, and the handle rod is used to drive the rotation of the rotating plate.

[0007] The position representation module is arranged on the rotating plate. The position representation module comprises: a plurality of position representation planes with different distances from the surface of the rotating plate, and each of the plurality of position representation planes corresponds to a handle position.

[0008] The laser ranging module is used to detect the distance from the position representation plane by emitting a laser beam perpendicular to the surface of the rotating plate, so as to determine the current handle position according to the currently detected distance.

[0009] Optionally, the handle type position controller based on laser ranging further comprises a rotating shaft, the rotating plate rotates around the rotating shaft.

[0010] Optionally, the rotating plate is a rotating cam plate, and the rotating shaft penetrates through the rotating cam plate.

[0011] Optionally, the rotating cam plate is cylindrical, and the axis of the rotating shaft coincides with the axis of the rotating cam plate.

[0012] Optionally, the position representation module further comprises a position representation plane at an angle with the surface of the rotating plate, the position representation plane corresponds to a handle endless control area.

[0013] Optionally, the position representation module is in the shape of an arc, and the center of the arc is located at the rotating center axis of the rotating plate.

[0014] Optionally, the position representation module is a metal block in the shape of an arc, the lower surface of the metal block is fixedly attached to the surface of the rotating plate, and the position representation plane is arranged on the upper surface of the metal block.

[0015] Optionally, the position representation module is a groove in the shape of an arc arranged on the rotating plate, and the position representation plane is arranged on the bottom surface of the groove.

[0016] Optionally, the handle type position controller based on laser ranging further comprises a housing.

[0017] The position representation module and the laser ranging module are arranged inside the housing, the handle rod is arranged outside the housing, the rotating plate is partially arranged outside the housing, and at least part of the rotating shaft is arranged inside the housing.

[0018] Optionally, the handle type position controller based on laser ranging further comprises a housing.

[0019] The rotating plate, the position representation module and the laser ranging module are all arranged inside the housing, the handle rod partially extends into the housing, and at least part of the rotating shaft is arranged inside the housing.

[0020] The handle type position controller based on laser ranging has the following advantages:

[0021] The handle type position controller based on laser ranging of the present application comprises a position representation module and a laser ranging module, the present application detects the distance from the position representation module to the position representation plane through the laser ranging module, each position representation plane corresponds to a handle position, and the present application can determine the current handle position according to the currently detected distance. The present application adopts laser ranging to replace the traditional mechanical transmission relying on gear meshing to change the sensor output, reduces the error caused by the wear of gear meshing, and improves the control accuracy of the controller. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort. In the drawings:

[0023] Figure 1 is a schematic diagram of the handle type position controller based on laser ranging of the present application;

[0024] Figure 2 is a typical circular arc center axis section view of the position representation module of the present application.

[0025] Symbol explanation:

[0026] 1, handle rod; 2, rotating piece; 3, position representation module; 4, laser ranging module; 5, rotating shaft; 6, shell. DETAILED DESCRIPTION

[0027] In order to make the person skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort should be within the scope of protection of the present application.

[0028] It should be noted that the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion, for example, a product or device containing a series of units does not have to be limited to those units clearly listed, but can include other units not clearly listed or inherent to the product or device.

[0029] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] It should be noted that the handle type position controller and device based on laser ranging in the present application can be used in the field of rail transit, and can also be used in any field other than the field of rail transit. The application field of the handle type position controller based on laser ranging in the present application is not limited.

[0031] Figure 1 is a schematic diagram of the handle type position controller based on laser ranging in an embodiment of the present application, as Figure 1 shown, in an embodiment of the present application, the handle type position controller based on laser ranging in the present application comprises a handle rod 1, a rotating plate 2, a position representation module 3 and a laser ranging module 4.

[0032] As Figure 1 shown, the rotating plate 2 is connected with the handle rod 1, and the handle rod 1 is used to drive the rotating plate 2 to rotate. The position representation module 3 is arranged on the rotating plate 2. The position representation module 3 comprises a plurality of position representation planes with different distances from the surface of the rotating plate, and each of the plurality of position representation planes corresponds to a handle position. The laser ranging module 4 is used to detect the distance from the position representation plane by emitting a laser beam perpendicular to the surface of the rotating plate, so as to determine the current handle position according to the currently detected distance.

[0033] In the present application, the position representation module 3 is arranged on the rotating plate 2 and rotates together with the rotating plate 2. The laser ranging module 4 is installed opposite to the position representation module 3. When the handle is in the initial position, the first position representation (position representation plane) of the position representation module 3 is just opposite to the laser ranging module 4. The laser of the laser ranging module 4 hits the first position representation (position representation plane), then receives the reflection signal, measures the distance between the laser emission position and the position representation (position representation plane), and this distance is the representation distance of the first handle position.

[0034] With the movement of the handle, the position representation module 3 also rotates, but the position of the laser ranging module 4 is fixed, so the laser will hit different position representations (position representation planes) of the position representation module 3, different handle positions correspond to different distances, so that by identifying the different distances, the handle position can be known. Compared with the traditional potentiometer, encoder and other continuous stepless output sensors, the heights of the position representation module 3 can be flexibly designed according to the needs of the handle position, that is, it can be designed as continuous stepless output, or as non-continuous step output, and more can be combined freely, that is, it can realize gear step change, or continuous stepless output, greatly facilitating the programming of the control program, avoiding the position jump and unstable output problems encountered by the existing sensors, thereby better meeting all the functional requirements of the handle.

[0035] In an embodiment of the present application, the position representation module 3 further comprises: a position representation plane at an angle with the surface of the rotating piece 2, which corresponds to the handle stepless control area.

[0036] Figure 2 It is a typical circular arc center axis sectional view of the position representation module of the present application, as shown in Figure 2 In an embodiment of the present application, the position representation module 3 specifically comprises 6 position representations (position representation planes), corresponding to 6 handle positions. With the movement of the handle, the handle position changes, and the laser of the laser ranging module will hit different position representations (position representation planes) of the position representation module 3, and the distance measured by the laser ranging module will change, so that the current handle position can be determined according to the distance measured by the laser ranging module.

[0037] Figure 2 The position 3 in the figure is a handle stepless control area, and the handle can be steplessly controlled within a certain range at this handle position. The corresponding position representation (position representation plane) is a plane at an angle with the surface of the rotating piece 2, so that when the laser ranging module 4 detects the distance of the position representation, the detected distance is linearly changed.

[0038] As shown in Figure 1 In an embodiment of the present application, the handle type position controller based on laser ranging of the present application further comprises: a rotating shaft 5, and the rotating piece 2 rotates around the rotating shaft 5.

[0039] In an embodiment of the present application, the rotating piece 2 is specifically a rotating cam piece, and the rotating shaft 5 penetrates the rotating cam piece.

[0040] In one embodiment of the present application, the rotating cam piece is cylindrical, and the axis of the rotating shaft 5 coincides with the axis of the rotating cam piece.

[0041] In one embodiment of the present application, the position representation module 3 is in the shape of a circular arc, and the center of the circular arc is located at the rotating center axis of the rotating piece 2.

[0042] In one embodiment of the present application, the position representation module 3 is specifically a circular arc-shaped metal block, the lower surface of the circular arc-shaped metal block is fixedly attached to the surface of the rotating piece 2, and the position representation plane is arranged on the upper surface of the circular arc-shaped metal block.

[0043] In another embodiment of the present application, the position representation module is specifically a circular arc-shaped groove arranged on the rotating piece 2, and the position representation plane is arranged on the bottom surface of the circular arc-shaped groove.

[0044] As shown in FIG. 1, in one embodiment of the present application, the handle-type position controller based on laser ranging of the present application comprises a handle rod 1, a rotating piece 2, a rotating shaft 5, a position representation module 3, and a laser ranging module 4. Figure 1

[0045] As shown in FIG. 1, in one embodiment of the present application, the position representation module 3 and the laser ranging module 4 are arranged inside the shell 6, the handle rod 1 is arranged outside the shell 6, the rotating piece 2 is partially arranged outside the shell 6, and at least a part of the rotating shaft 5 is arranged inside the shell 6. Figure 1

[0046] In another embodiment of the present application, the rotating piece 2, the position representation module 3, and the laser ranging module 4 are all arranged inside the shell 6, the handle rod 1 partially extends into the shell 6, and at least a part of the rotating shaft 5 is arranged inside the shell 6.

[0047] ​​In one embodiment of the present application, the handle rod 1 extends out of the housing 6 of the handle position controller, and the remaining components are all installed in the housing 6 of the handle position controller. The position representation module 3 specially designed according to the height of the handle position is installed on the rotating plate 2 of the handle position controller, the laser ranging module 4 is installed opposite to the position representation module 3, and the laser of the laser ranging module 4 is just vertically on the position representation module 3. Thus, when the position representation module 3 rotates with the rotation of the handle, the laser ranging module 4 measures different distances, and then the corresponding position of the handle is obtained through the distances. The method of the present application can freely and randomly combine the stepless output with the stepped output by designing the position representation module 3 with different profiles, so that the handle position controller of the rail transit traditional design using the potentiometer and other sensors can adopt the technology of the present application, including the brake handle, the traction handle and the backup handle. Therefore, it can be predicted that if the technology of the present application can be applied in practice, it will produce very great social value and economic value.

[0048] The present application uses the laser ranging technology, which has many other advantages in addition to flexible detection and avoiding some inherent shortcomings of the traditional design.

[0049] 1. Simple structure, only a simple position representation module and a laser ranging module need to be added, and the gear transmission mechanism and the potentiometer, encoder and other sensor devices in the traditional structure can be removed.

[0050] 2. Non-contact measurement, the frequent operation and vibration of the handle have little effect on the measurement system, and the problem of failure of the handle position recognition caused by the failure of the transmission mechanism will not occur.

[0051] 3. High detection accuracy, the laser ranging method belongs to direct measurement, which neither transmits displacement through the transmission mechanism nor is affected by the change of other input quantities (such as input voltage); secondly, the diameter of the laser point is sub-millimeter level, so the measurement accuracy can reach sub-millimeter level, in addition, through the design of different types of position representation modules, the adjacent positions can be represented by large steps, which improves the measurement accuracy and can more sensitively identify the change of the handle position.

[0052] 4. The traditional handle stroke is only about 70 degrees, and since the rotation of the sensor is driven by the handle movement, even if it is amplified, the output is at most 360 degrees, and the second circle is the repeated output value of the first circle. The present application breaks through the restriction of the handle stroke on the transmission rotation, and the position representation module represents the change of the position by the different distances of the laser at different positions, so that the original angle measurement is changed to distance measurement, and the measurement distance can be adjusted in the effective measurement range of the distance measurement module.

[0053] 5. High reliability, since only the laser ranging module, one electronic component, the possibility of failure is greatly reduced.

[0054] 6. Low assembly precision requirements, because there is no mechanical assembly and other issues, the only requirement is to ensure that the laser beam needs to be hit on the position representation module, so the assembly precision can be in millimeter level.

[0055] 7. Free calibration, since the ranging module distance measurement has been fixed at the factory, the position representation module is a mechanical component, which will not change after processing, so as long as the model is selected and calibrated once, as long as the assembly does not change, the position calibration is no longer needed, and the installation can be used, avoiding the complex calibration process of the present handle and the many problems caused by the calibration problem.

[0056] 8. High flexibility, by changing different position representation modules, the same handle can represent different position combinations, with high flexibility, which can be applied to various occasions.

[0057] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A handle-type position controller based on laser ranging, characterized in that, include: Handle lever, rotating plate, position characterization module, and laser ranging module; The rotating plate is connected to the handle rod, and the handle rod is used to drive the rotating plate to rotate. The position characterization module is mounted on the rotating plate; The position characterization module includes: multiple position characterization planes at different distances from the surface of the rotating piece, each of the multiple position characterization planes corresponding to a handle position; The laser ranging module is used to detect its own distance from the position characterization plane by emitting a laser beam perpendicular to the surface of the rotating plate, so as to determine the current handle position based on the currently detected distance.

2. The handheld position controller based on laser ranging according to claim 1, characterized in that, Also includes: A rotating shaft around which the rotating plate rotates.

3. The handheld position controller based on laser ranging according to claim 2, characterized in that, The rotating plate is specifically a rotating cam plate, and the rotating shaft passes through the rotating cam plate.

4. The handheld position controller based on laser ranging according to claim 3, characterized in that, The rotating cam is cylindrical, and the axis of the rotating shaft coincides with the axis of the rotating cam.

5. The handheld position controller based on laser ranging according to claim 1, characterized in that, The position characterization module further includes a position characterization plane at a certain angle to the surface of the rotating plate, which corresponds to the stepless control area of ​​the handle.

6. The handheld position controller based on laser ranging according to claim 1, characterized in that, The position characterization module is arc-shaped, and the center of the arc is located on the rotation center axis of the rotating plate.

7. The handheld position controller based on laser ranging according to claim 6, characterized in that, The position characterization module is specifically an arc-shaped metal block, the lower surface of which is fixedly attached to the surface of the rotating piece, and the position characterization plane is disposed on the upper surface of the arc-shaped metal block.

8. The handheld position controller based on laser ranging according to claim 6, characterized in that, The position characterization module is specifically an arc-shaped groove disposed on the rotating plate, and the position characterization plane is disposed on the bottom surface of the arc-shaped groove.

9. The handheld position controller based on laser ranging according to claim 2, characterized in that, Also includes: case; The position characterization module and the laser ranging module are disposed inside the housing; the handle rod is disposed outside the housing; the rotating plate portion is located outside the housing; and at least a portion of the rotating shaft is disposed inside the housing.

10. The handheld position controller based on laser ranging according to claim 2, characterized in that, Also includes: case; The rotating plate, the position characterization module, and the laser ranging module are all disposed inside the housing; the handle rod extends into the housing; at least a portion of the rotating shaft is disposed inside the housing.

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