CN214895382U - Portable laser velocimeter with angle compensation function - Google Patents
Portable laser velocimeter with angle compensation function Download PDFInfo
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- CN214895382U CN214895382U CN202120168273.2U CN202120168273U CN214895382U CN 214895382 U CN214895382 U CN 214895382U CN 202120168273 U CN202120168273 U CN 202120168273U CN 214895382 U CN214895382 U CN 214895382U
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Abstract
The utility model discloses a portable laser velocimeter with angle compensation function, include: a velocimeter body; the inner side of the velocimeter body is sequentially provided with an objective lens group, a prism group, a differentiation plate and an eyepiece lens group from an object side to an image side along an optical axis, and the surface of the differentiation plate is carved with a dividing cross line; the laser emission assembly is connected to the position, located on the prism group, of the bottom of the velocimeter body. The utility model uses the measured distance value, time difference value and included angle of the target vehicle measured twice at the interval, and uses the triangular relation to calculate the running speed of the target vehicle, does not need to be close to the movement route of the target object, selects a safe position for measurement, and provides a safe, reliable and convenient test mode; the speed measurement is more accurate, and equipment ten minutes is small and exquisite, and the one hand can be taken, and the removal portability of equipment also ten minutes is advantageous, as long as the speed measurement point position is safe, and the field of vision is wide, just can detect immediately, does not need to spend the time to set up, debug equipment.
Description
Technical Field
The utility model relates to a speed sensor technical field especially relates to a portable laser velocimeter with angle compensation function.
Background
The laser velocimeter is widely applied to the fields of high speed, national road and the like which need to monitor the running speed, is one of important means of modern management and monitoring, greatly improves the management efficiency and the automation level, generally speaking, the laser velocimeter measures the transmission time of infrared light waves between equipment and a target by emitting the infrared light waves twice at fixed intervals, obtains two distances according to the principle that the light speed is constant, and obtains the speed of the target by dividing the difference value by the emission time interval.
However, the detection range is small, so that the influence caused by the installation angle needs to be considered and corrected during design, the included angle between a measurer and a measured object needs to be small, the influence of errors can be reduced, the operation and use scene is easy to limit, potential safety hazards exist, and the use is inconvenient.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a portable laser velocimeter with angle compensation function to solve the weak point among the above-mentioned prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a portable laser velocimeter with angle compensation, comprising: a velocimeter body;
the inner side of the velocimeter body is sequentially provided with an objective lens group, a prism group, a differentiation plate and an eyepiece lens group from an object side to an image side along an optical axis, and the surface of the differentiation plate is carved with a dividing cross line;
the laser emission assembly is connected to the position, located on the prism group, of the bottom of the velocimeter body, and laser beams generated by the laser emission assembly are reflected by the prism group and emitted from the object side end of the velocimeter body;
the object side end of the velocimeter body is also provided with a laser receiving assembly;
still install gyroscope, data processing unit and display on the tachymeter body, the output of laser emission subassembly, laser receiving assembly and gyroscope all with data processing unit input electric connection, data processing unit's output is connected with the display.
As a further description of the above technical solution:
the laser gyroscope is characterized in that a power supply module is further installed on the velocimeter body and is respectively connected with the laser emitting assembly, the laser receiving assembly, the gyroscope, the data processing unit and the display through wires.
As a further description of the above technical solution:
the laser emission component comprises an emission lens and a laser tube, wherein the emission lens and the laser tube are sequentially arranged below the prism group.
As a further description of the above technical solution:
the laser receiving assembly comprises a first receiving lens, a second receiving lens, a third receiving lens and a photoelectric receiving sensor, and the first receiving lens, the second receiving lens, the third receiving lens and the photoelectric receiving sensor are sequentially arranged along the receiving direction of the laser beam.
As a further description of the above technical solution:
the data processing unit is any one of a programmable logic chip or a TOF clock chip IC.
The utility model provides a portable laser velocimeter with angle compensation function. The method has the following beneficial effects:
the portable laser velocimeter with the angle compensation function can enable a measurer to calculate the running speed of a target vehicle by utilizing the distance value, the time difference value and the included angle which are measured twice at an interval and utilizing the triangular relation when measuring the speed of the target vehicle, does not need to be close to the movement route of a target object, selects a safe position for measurement, and provides a safe, reliable and convenient test mode; the speed measurement is more accurate, and equipment ten minutes is small and exquisite, and the one hand can be taken, and the removal portability of equipment also ten minutes is advantageous, as long as the speed measurement point position is safe, and the field of vision is wide, just can detect immediately, does not need to spend the time to set up, debug equipment.
Drawings
Fig. 1 is a schematic view of the overall structure of a portable laser velocimeter with angle compensation function according to the present invention;
fig. 2 is a schematic structural diagram of a laser emitting assembly according to the present invention;
fig. 3 is a schematic structural diagram of the middle laser receiving assembly of the present invention.
Illustration of the drawings:
1. a velocimeter body; 2. an objective lens group; 3. a prism group; 4. an eyepiece group; 5. a differentiation plate; 6. a laser emitting assembly; 61. a transmitting lens; 62. a laser tube; 7. a laser receiving assembly; 71. a first receiving lens; 72. a second receiving optic; 73. a third receiving optic; 74. a photoelectric receiving sensor; 8. a power supply module; 9. a gyroscope; 10. a data processing unit; 11. a display.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1 to 3, a portable laser velocimeter having an angle compensation function includes: a velocimeter body 1;
the inside of the velocimeter body 1 is provided with an objective lens group 2, a prism group 3, a differentiation plate 5 and an ocular lens group 4 in sequence from an object side to an image side along an optical axis, and the surface of the differentiation plate 5 is carved with a dividing cross line;
the bottom of the velocimeter body 1 is connected with a laser emission component 6 at the position of the prism group 3, and laser beams generated by the laser emission component 6 are reflected by the prism group 3 and emitted from the object side end of the velocimeter body 1;
the end head of the velocimeter body 1 at the object side is also provided with a laser receiving assembly 7;
still install gyroscope 9, data processing unit 10 and display 11 on the tachymeter body 1, laser emission subassembly 6, laser receiving assembly 7 and gyroscope 9's output all with data processing unit 10 input electric connection, data processing unit 10's output and display 11 are connected.
Specifically, the objective lens group 2, the prism group 3, the differentiation plate 5 and the eyepiece group 4 are sequentially arranged on the inner side of the velocimeter body 1 from the object side to the image side along the optical axis, wherein the velocimeter body 1 is of a lens barrel type structure, the optical axis of the velocimeter body 1 is the center line of the velocimeter body 1, the object side refers to the side of the velocimeter body 1 opposite to a target, and the image side refers to the side of the velocimeter body 1 opposite to a viewer, when in use, a measurer only needs to aim at the target object by using the cross line on the differentiation plate 5 and follow a period of time along with the movement of the target object, the laser emission assembly 6 starts to continuously emit laser beams, after striking the target object, certain energy is reflected to the laser reception assembly 7 by the target object, the energy received by the laser reception assembly 7 enters the data processing unit 10 after being processed, and meanwhile, the data processing unit 10 also collects the gyroscope 9 in the process, the data processing unit 10 calculates the speed measurement result by using the distance value, the time difference value and the included angle measured twice by the measured interval and using the trigonometric relationship, and the speed measurement result is transmitted to the display 11 for final result display.
Still install power module 8 on the tachymeter body 1, power module 8 passes through the wire and is connected with laser emission subassembly 6, laser receiving assembly 7, gyroscope 9, data processing unit 10 and display 11 respectively.
The laser emission assembly 6 comprises an emission lens 61 and a laser tube 62, and the emission lens 61 and the laser tube 62 are arranged below the prism group 3 in sequence.
The laser receiving assembly 7 includes a first receiving mirror 71, a second receiving mirror 72, a third receiving mirror 73 and a photoelectric receiving sensor 74, and the first receiving mirror 71, the second receiving mirror 72, the third receiving mirror 73 and the photoelectric receiving sensor 74 are sequentially arranged along the laser beam receiving direction.
Specifically, after the signal returns, the energy is respectively converged into the photoelectric receiving sensor 74 through the first receiving lens 71, the second receiving lens 72 and the third receiving lens 73, so that the signal is converged, the sensitivity is improved, and then the photoelectric receiving sensor 74 transmits the collected receiving signal into the data processing unit 10.
The data processing unit 10 is any one of a programmable logic chip or a TOF clock chip IC, the programmable logic chip is matched with a specific acquisition algorithm program to realize related functions of data processing, or a dedicated TOF clock chip IC is used: such as GP21 chip, thereby promoting certain development cost and convenience.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean 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 do not necessarily 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.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. A portable laser velocimeter with angle compensation function, comprising: a velocimeter body (1);
the inside of the velocimeter body (1) is sequentially provided with an objective lens group (2), a prism group (3), a differentiation plate (5) and an eyepiece lens group (4) from an object side to an image side along an optical axis, and a dividing cross line is carved on the surface of the differentiation plate (5);
the laser emission assembly (6) is connected to the position, located on the prism group (3), of the bottom of the velocimeter body (1), and laser beams generated by the laser emission assembly (6) are reflected by the prism group (3) and are emitted from the object side end of the velocimeter body (1);
the object side end of the velocimeter body (1) is also provided with a laser receiving component (7);
still install gyroscope (9), data processing unit (10) and display (11) on tachymeter body (1), the output of laser emission subassembly (6), laser receiving assembly (7) and gyroscope (9) all with data processing unit (10) input electric connection, the output and the display (11) of data processing unit (10) are connected.
2. The portable laser velocimeter with the angle compensation function according to claim 1, wherein a power module (8) is further installed on the velocimeter body (1), and the power module (8) is respectively connected with the laser emitting assembly (6), the laser receiving assembly (7), the gyroscope (9), the data processing unit (10) and the display (11) through wires.
3. The portable laser velocimeter with angle compensation function according to claim 1, wherein the laser emission assembly (6) comprises an emission lens (61) and a laser tube (62), and the emission lens (61) and the laser tube (62) are arranged in sequence below the prism group (3).
4. The portable laser velocimeter with angle compensation function according to claim 1, wherein the laser receiving assembly (7) comprises a first receiving lens (71), a second receiving lens (72), a third receiving lens (73) and a photoelectric receiving sensor (74), and the first receiving lens (71), the second receiving lens (72), the third receiving lens (73) and the photoelectric receiving sensor (74) are arranged in sequence along the laser beam receiving direction.
5. A portable laser velocimeter with angle compensation according to claim 1, characterised in that the data processing unit (10) is any one of a programmable logic chip or a TOF clock chip IC.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120168273.2U CN214895382U (en) | 2021-01-21 | 2021-01-21 | Portable laser velocimeter with angle compensation function |
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| CN202120168273.2U CN214895382U (en) | 2021-01-21 | 2021-01-21 | Portable laser velocimeter with angle compensation function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166113A (en) * | 2021-12-02 | 2022-03-11 | 中国航空工业集团公司北京长城计量测试技术研究所 | Automatic light beam deflection compensation device and laser interferometer |
| CN114609407A (en) * | 2022-03-16 | 2022-06-10 | 苏州邈航科技有限公司 | Horizontal velocimeter based on MEMS gyroscope and velocimetry method thereof |
-
2021
- 2021-01-21 CN CN202120168273.2U patent/CN214895382U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166113A (en) * | 2021-12-02 | 2022-03-11 | 中国航空工业集团公司北京长城计量测试技术研究所 | Automatic light beam deflection compensation device and laser interferometer |
| CN114166113B (en) * | 2021-12-02 | 2024-03-01 | 中国航空工业集团公司北京长城计量测试技术研究所 | Beam deflection automatic compensation device and laser interferometer |
| CN114609407A (en) * | 2022-03-16 | 2022-06-10 | 苏州邈航科技有限公司 | Horizontal velocimeter based on MEMS gyroscope and velocimetry method thereof |
| CN114609407B (en) * | 2022-03-16 | 2024-02-06 | 苏州邈航科技有限公司 | Horizontal velocimeter based on MEMS gyroscope and velocity measuring method thereof |
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