A two-dimensional photoelectric self-collimation device and a self-collimation method

Abstract

The present application belongs to the field of photoelectric detection technology, and relates to a two-dimensional photoelectric self-collimation device, which includes a rotating nut, a rotating shaft, a corrugated washer, a transverse axis group, a CCD, a fixed CCD cylinder, a light source, a light pipe, a fixed light pipe and a transverse axis group cylinder, a display part, a back cover, and a front cover; the rotating nut is fastened to the rotating shaft, and a corrugated washer is arranged between the rotating nut and the back cover; the transverse axis group includes a dial shaft, a code disc, a sleeve, a reading head, and a sealed lamp holder, the reading head is fixed on the sealed lamp holder, the code disc is glued on the dial shaft, the left end of the dial shaft is connected to the rotating shaft, and the right end is connected to the fixed CCD cylinder, and the fixed CCD cylinder is installed with a CCD and a light source; the fixed light pipe and the transverse axis group cylinder are installed in the mounting hole of the front cover. The present application also discloses a self-collimation method. The present application has the following main beneficial effects: the measurement function of the area array CCD is realized by using a linear array CCD, the manufacturing cost is saved, and the system structure is simpler than that of the area array CCD.

Description

Technical Field

[0001] The invention belongs to the technical field of photoelectric detection, and in particular relates to a two-dimensional photoelectric self-collimation device and a self-collimation method. Background Art

[0002] Autocollimation is a method that uses the principle of light reflection to measure the deflection angle of a reflector. After the light passes through the grating located on the focal plane of the objective lens, it forms parallel light through the objective lens. After being reflected by the reflector, it forms an image on the focal plane of the objective lens. If the reflector is perpendicular to the optical axis, the image will coincide with the original position. If the reflector has a small deflection angle α in the horizontal direction, the light spot image will deviate from the original center point, and the deviation t can be read out by the horizontal one-dimensional CCD. When α is very small, α=t / 2f. This method uses a linear array CCD to only measure the deflection angle of the reflector in the horizontal direction, which has great limitations.

[0003] There are already some two-dimensional photoelectric autocollimation devices, which are all realized by using area array CCD. Their disadvantages are complex system structure, high cost and relatively poor accuracy. Summary of the invention

[0004] In order to solve the above problems, the purpose of the present invention is to disclose a two-dimensional photoelectric self-collimation device, which is suitable for detecting the horizontal and vertical deflection angles of a plane, and can also be used to detect straightness, flatness, parallelism, etc. The application also discloses a self-collimation method. They are implemented by the following technical solutions.

[0005] The present application uses a linear array CCD component to achieve two-dimensional roll angle measurement, thereby overcoming the defect that the linear array CCD can only measure data in one direction.

[0006] A two-dimensional photoelectric self-collimation device comprises a rotating nut, a rotating shaft, a corrugated washer, a transverse axis group, a CCD, a fixed CCD cylinder, a light source, a light pipe, a fixed light pipe and a transverse axis group cylinder, a display part, a rear cover, and a front cover; the rotating nut and the rotating shaft are fastened with screws, and a corrugated washer is pressed between the rotating nut and the rear cover so that there is a damping feeling when the rotating nut rotates; the transverse axis group comprises a dial shaft, a code disc, a shaft sleeve, two reading heads, and a sealed lamp holder, the shaft sleeve and the sealed lamp holder are fixed to the fixed light pipe and the transverse axis group cylinder by screws, and the two reading heads are fixed to the sealed lamp holder by screws The code disk is glued to the dial shaft, the left end of the dial shaft is connected to the rotating shaft by screws, and the right end is connected to the fixed CCD cylinder by screws, and the CCD and light source are installed on the fixed CCD cylinder by threads; the fixed light tube and the horizontal axis group cylinder are installed in the mounting hole of the front cover and fixed with screws; the front cover and the rear cover are connected with screws; the fixed light tube and the right end of the horizontal axis group cylinder are connected to the light tube with screws; the light tube has a foot screw for leveling the light tube; the display part is fixed to the front cover with screws, and is connected to the horizontal axis group through cables, so that the rotation angle can be read and displayed.

[0007] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the CCD is located on the focal plane of the light pipe.

[0008] The above-mentioned two-dimensional photoelectric self-collimation device is characterized by using a code disk for angle measurement.

[0009] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the CCD can realize the rotation function.

[0010] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the device can display the rotation angle and yaw angle measurement results on the screen and read them directly.

[0011] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the light tube has three foot screws for leveling the light tube.

[0012] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the rotating nut is aluminum or iron.

[0013] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the rotating axis is aluminum.

[0014] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material for fixing the CCD cylinder is aluminum.

[0015] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the fixed light pipe and the horizontal axis group cylinder is aluminum.

[0016] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the back cover is aluminum.

[0017] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the front cover is aluminum.

[0018] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the dial axis is bearing steel.

[0019] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the code disk is float glass.

[0020] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the sleeve is bearing steel.

[0021] The self-collimation method of the two-dimensional photoelectric self-collimation device described above is as follows:

[0022] Step 1: Level the light tube;

[0023] Step 2: Open the device, take out a laptop computer, pre-install the matching test software in the computer, use a USB data cable to connect one end to the USB interface of the device, and the other end to the USB interface of the laptop computer, open the test software on the computer, click Start, turn on the light source, and a sine waveform will be generated on the computer software interface. The peak height is the spot deviation t measured by the CCD. The software will automatically take a group of t values ​​and calculate the average value;

[0024] Step 3: Rotate the rotating nut of the device to drive the rotating shaft connected to it with screws to rotate, the rotating shaft drives the dial shaft connected to it with screws to rotate, the dial shaft drives the fixed CCD cylinder connected to it with screws to rotate, and the CCD is installed on the fixed CCD cylinder with screws, thereby driving the CCD to rotate an angle, and the waveform of the software interface will produce corresponding changes. When the obtained average value is the largest, it means that the rotation angles of the CCD and the reflector are consistent at this time, and the angle of rotation of the rotating nut and the yaw angle of the reflector are read from the display interface; the self-collimation is completed.

[0025] The present invention has the following major beneficial effects: the present invention uses a linear array CCD to realize the measurement function of an area array CCD, thus saving manufacturing costs, and the system structure is simpler than that using an area array CCD. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of this application.

[0027] Figure 2 for Figure 1 Schematic diagram of the horizontal axis group structure.

[0028] Figure 3 This is the principle diagram of self-collimation in this application.

[0029] Figure 4 This is a diagram of the computer testing software interface.

[0030] Figure 5 This is the interface diagram of the sine waveform generated by the test software.

[0031] Figure 6 This is a waveform change diagram of the software interface.

[0032] Figure 7 The interface diagram shows the angle of rotation of the rotating nut and the tilt angle of the reflector.

[0033] In order to enable technical personnel to more accurately and clearly understand and implement the present application, the following further explanation of the figure numbers is given in conjunction with the drawings of the specification, in which: 1 - rotating nut, 2 - rotating shaft, 3 - corrugated washer, 4 - horizontal axis group, 5 - CCD, 6 - fixed CCD cylinder, 7 - light source, 8 - light pipe, 9 - fixed light pipe and horizontal axis group cylinder, 10 - display part, 11 - back cover, 12 - front cover, 4a - dial shaft, 4b - code disk, 4c - bushing, 4d - reading head, 4e - sealed lamp holder. DETAILED DESCRIPTION

[0034] Please see Figures 1 to 3 A two-dimensional photoelectric self-collimation device comprises a rotating nut 1, a rotating shaft 2, a corrugated washer 3, a transverse axis group 4, a CCD 5, a fixed CCD cylinder 6, a light source 7, a light pipe 8, a fixed light pipe and a transverse axis group cylinder 9, a display part 10, a rear cover 11, and a front cover 12; the rotating nut 1 and the rotating shaft 2 are fastened with screws, and a corrugated washer 3 is pressed between the rotating nut 1 and the rear cover 11, so that there is a damping feeling when the rotating nut 1 rotates; the transverse axis group 4 comprises a dial shaft 4a, a code disc 4b, a sleeve 4c, two reading heads 4d, and a sealed lamp holder 4e, and the sleeve 4c and the sealed lamp holder 4e are fixed to the fixed light pipe and the transverse axis group cylinder 9 by screws, and the two reading heads 4d are fixed by screws It is fixed on the sealed lamp holder 4e, the code disc 4b is glued on the dial shaft 4a, the left end of the dial shaft 4a is connected to the rotating shaft 2 by screws, and the right end is connected to the fixed CCD cylinder 6 by screws, and the CCD5 and the light source 7 are installed on the fixed CCD cylinder 6 by threads; the fixed light tube and the horizontal axis group cylinder 9 are installed in the mounting hole of the front cover 12 and fixed with screws; the front cover 12 and the rear cover 11 are connected with screws; the fixed light tube and the right end of the horizontal axis group cylinder 9 are connected to the light tube 8 by screws; the light tube 8 has 3 foot screws for leveling the light tube; the display part 11 is fixed to the front cover 12 with screws, and is connected to the horizontal axis group 4 through cables, so that the rotation angle can be read and displayed.

[0035] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the CCD is located on the focal plane of the light pipe 8.

[0036] The above-mentioned two-dimensional photoelectric self-collimation device is characterized by using a code disk for angle measurement.

[0037] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the CCD can realize the rotation function.

[0038] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the device can display the rotation angle and yaw angle measurement results on the screen and read them directly.

[0039] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the light tube has three foot screws for leveling the light tube.

[0040] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the rotating nut is aluminum or iron.

[0041] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the rotating axis is aluminum.

[0042] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the CCD is a TCD1103GFG linear array CCD.

[0043] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material for fixing the CCD cylinder is aluminum.

[0044] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the fixed light pipe and the horizontal axis group cylinder is aluminum.

[0045] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the back cover is aluminum.

[0046] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the front cover is aluminum.

[0047] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the dial axis is bearing steel.

[0048] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the code disk is float glass.

[0049] The above-mentioned two-dimensional photoelectric self-collimation device is characterized in that the material of the sleeve is bearing steel.

[0050] The two-dimensional photoelectric self-collimation device described above is characterized in that the reading head is an LED lamp.

[0051] The self-collimation method of this device is:

[0052] Step 1: Level the light tube 8;

[0053] Step 2: Open the device, take out a laptop computer with the pre-installed matching test software, use a USB data cable to connect one end to the USB port of the device, and the other end to the USB port of the laptop computer, open the test software on the computer, such as Figure 4 , click Start, turn on the light source 7, and a sinusoidal waveform will be generated on the computer software interface. Figure 5 , the peak height is the spot deviation t measured by the CCD. The software will automatically take a group of t values ​​and calculate the average value;

[0054] Step 3: Rotate the rotating nut 1 of the device to drive the rotating shaft 2 connected with the screw to rotate, the rotating shaft 2 drives the dial shaft 4a connected with the screw to rotate, the dial shaft 4a drives the fixed CCD cylinder 6 connected with the screw to rotate, and the CCD5 is installed on the fixed CCD cylinder 6 with screws, thereby driving the CCD to rotate an angle, and the waveform of the software interface will change accordingly, such as Figure 6 When the average value is the largest, it means that the rotation angles of the CCD and the reflector are consistent. The angle of rotation of the rotating nut 1 and the deflection angle of the reflector are read from the display interface as follows: Figure 7 ; Self-collimation is completed.

[0055] In this application, the CCD is installed on the rotating shaft to realize rotation, and the code disk and the reading head are installed on the rotating shaft to realize the rotation angle measurement, so as to achieve the purpose of measuring the deflection angle in any direction.

[0056] The software used in this application has the copyright name: Angle Automatic Detection Software V2.0, the registration date: June 28, 2018, and the registration number: 2018SR497602; personnel in the technical field can obtain it through the software registration department.

[0057] The present invention has the following major beneficial effects: the present invention uses a linear array CCD to realize the measurement function of an area array CCD, thus saving manufacturing costs, and the system structure is simpler than that using an area array CCD.

[0058] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A two-dimensional photoelectric self-collimation device, comprising a rotating nut (1), a rotating shaft (2), a corrugated washer (3), a horizontal axis group (4), a CCD (5), a fixed CCD cylinder (6), a light source (7), a light pipe (8), a fixed light pipe and horizontal axis group cylinder (9), a display part (10), a rear cover (11), and a front cover (12); characterized in that The rotating nut (1) and the rotating shaft (2) are fastened with screws. A corrugated washer (3) is pressed between the rotating nut (1) and the back cover (11) so that the rotating nut (1) has a damping feeling when rotating. The horizontal axis group (4) includes a dial shaft (4a), a code disc (4b), a shaft sleeve (4c), two reading heads (4d), and a sealed lamp holder (4e). The shaft sleeve (4c) and the sealed lamp holder (4e) are fixed to the fixed light tube and the horizontal axis group cylinder (9) by screws. The two reading heads (4d) are fixed to the sealed lamp holder (4e) by screws. The code disc (4b) is glued to the dial shaft (4a). The left end of the dial shaft (4a) is connected to the rotating shaft (2) by The front cover (12) is connected with the rear cover (11) by screws, and the right end is connected with the fixed CCD cylinder (6) by screws, and the CCD (5) and the light source (7) are installed on the fixed CCD cylinder (6) by screws; the fixed light pipe and the horizontal axis group cylinder (9) are installed in the installation hole of the front cover (12) and fixed by screws; the front cover (12) and the rear cover (11) are connected by screws; the fixed light pipe and the right end of the horizontal axis group cylinder (9) are connected with the light pipe (8) by screws; the light pipe (8) has 3 foot screws for leveling the light pipe; the display part (11) is fixed to the front cover (12) by screws, and is connected to the horizontal axis group (4) by cables, and can read and display the rotation angle; The two-dimensional photoelectric self-collimation device, the self-collimation method is: Step 1: Level the light tube; Step 2: Open the device, take out a laptop computer, pre-install the matching test software in the computer, use a USB data cable to connect one end to the USB interface of the device, and the other end to the USB interface of the laptop computer, open the test software on the computer, click Start, turn on the light source, and generate a sine waveform on the computer software interface. The peak height is the spot deviation t measured by the CCD. The software will automatically take a group of t values ​​and calculate the average value; Step three: Rotate the rotating nut of this device to drive the rotating shaft connected to it with screws to rotate, the rotating shaft drives the dial shaft connected to it with screws to rotate, the dial shaft drives the fixed CCD cylinder connected to it with screws to rotate, and the CCD is installed on the fixed CCD cylinder with screws, thereby driving the CCD to rotate an angle, and the waveform of the software interface will produce corresponding changes. When the obtained average value is the largest, it means that the rotation angles of the CCD and the reflector are consistent at this time, and the angle of the rotating nut and the yaw angle of the reflector are read from the display interface; the self-collimation is completed; the present device is a two-dimensional photoelectric self-collimation device.

2. A two-dimensional photoelectric self-collimation device according to claim 1, characterized in that The CCD is located on the focal plane of the light pipe (8).

3. A two-dimensional photoelectric self-collimation device according to claim 2, characterized in that The material of the rotating nut is aluminum or iron.

4. A two-dimensional photoelectric self-collimation device according to claim 3, characterized in that The material of the rotating shaft is aluminum.

5. A two-dimensional photoelectric self-collimation device according to claim 4, characterized in that The material of the fixed CCD cylinder is aluminum.

6. A two-dimensional photoelectric self-collimation device according to claim 5, characterized in that The material of the fixed light pipe and the cross-axis group cylinder is aluminum.

7. A two-dimensional photoelectric self-collimation device according to claim 6, characterized in that The material of the sleeve is bearing steel.

8. A two-dimensional photoelectric self-collimation device according to claim 7, characterized in that The reading head is an LED light; the material of the code disc is float glass.

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