A camera ZOOM, FCOUS position detection and reading device

Abstract

The present application discloses a camera ZOOM, FCOUS position detection and reading device, which relates to the technical field of encoders, including: a position detection module including a first angle position detection unit and a second angle position detection unit, the first angle position detection unit is used to detect the camera ZOOM angle position and output a first current absolute value angle signal, and the second angle position detection unit is used to detect the camera FCOUS angle position and output a second current absolute value angle signal; a data processing module is connected to the first angle position detection unit and the second angle position detection unit by signal, and is used to receive the first current absolute value angle signal and the second current absolute value angle signal and then output an integrated data signal; a data receiving module is connected to the data processing module by signal, and is used to receive the integrated data signal and output it to a host computer after performing level signal conversion. The present application has the effect of improving the accuracy of obtaining camera ZOOM and FCOUS data.

Description

Technical Field

[0001] The present application relates to the technical field of encoders, and in particular to a camera ZOOM and FCOUS position detection and reading device. Background Art

[0002] At present, the ZOOM position of the camera refers to the process of adjusting the zoom parameters of the camera to achieve the zoom effect of the shooting picture, thereby controlling the size of the camera's field of view. The FCOUS position of the camera refers to the process of adjusting the focus mechanism of the camera to make the image of the object being photographed clear. The encoder is a sensor device that collects, compiles and converts signals or data into signals that can communicate, transmit and store signals. It is widely used in servo motors, robots, intelligent hardware, CNC machining machines, automatic production lines and non-standard equipment. It is a detection feedback unit for real-time feedback of position, speed, angle and other states. In virtual production and XR virtual shooting scenes, it is necessary to detect the camera ZOOM and FCOUS data in real time to synchronize the focus of the virtual background with the real scene. Therefore, it is very important to detect and read the camera ZOOM and FCOUS position data.

[0003] The existing camera ZOOM and FCOUS position detection and reading are obtained through the ZOOM and FCOUS data interfaces built into the camera manufacturer. However, there are many types of cameras on the market, and the data interface protocols are different. Especially in virtual production and XR virtual shooting, there are many equipment providers with different models, which makes the camera ZOOM and FCOUS data acquisition process cumbersome and complicated. Traditional encoder equipment has fixed functions and few optional functions, and does not have long-distance stable communication capabilities. It is difficult to realize the function of obtaining camera ZOOM and FCOUS data, and there is room for improvement. Summary of the invention

[0004] In order to improve the accuracy of obtaining camera ZOOM and FCOUS data, the present application provides a camera ZOOM and FCOUS position detection and reading device.

[0005] The present application provides a camera ZOOM and FCOUS position detection and reading device, which adopts the following technical solution:

[0006] A camera ZOOM and FCOUS position detection and reading device, comprising:

[0007] Position detection module: including a first angle position detection unit and a second angle position detection unit, wherein the first angle position detection unit is used to detect the camera ZOOM angle position and output a first current absolute value angle signal, and the second angle position detection unit is used to detect the camera FCOUS angle position and output a second current absolute value angle signal;

[0008] A data processing module: configured to be signal-connected to the output end of the first angle position detection unit and the output end of the second angle position detection unit, and used to receive the first current absolute value angle signal and the second current absolute value angle signal and output an integrated data signal after data processing;

[0009] Data receiving module: configured to be signal-connected to the output end of the data processing module, used to receive the integrated data signal and perform level signal conversion before outputting it to the host computer.

[0010] Preferably, the first angle position detection unit includes a first circuit board, a first shell, a first TMR angle sensor, a first metal gear and a first radial magnet. The first TMR angle sensor and the first shell are installed on the first circuit board. The first TMR angle sensor, the first metal gear and the first radial magnet are installed in the first shell. The outer teeth of the first metal gear are engaged with the camera ZOOM rotating gear for transmission. A first magnet groove is provided at the center of the first metal gear. The first radial magnet is placed in the first magnet groove. The center position of the first TMR angle sensor is placed corresponding to the center position of the first radial magnet. The first radial magnet is placed directly above the first TMR angle sensor within a set distance range. The output end of the first TMR angle sensor is signal-connected to the first input end of the data processing module. The first TMR angle sensor is used to detect the change in the magnetic field angle of the first radial magnet and then output a first current absolute value angle signal to the data processing module.

[0011] Preferably, the second angle position detection unit includes a second circuit board, a second shell, a second TMR angle sensor, a second metal gear and a second radial magnet. The second TMR angle sensor and the second shell are mounted on the second circuit board. The second TMR angle sensor, the second metal gear and the second radial magnet are mounted in the second shell. The outer teeth of the second metal gear are engaged with the rotating gear of the camera FCOUS for transmission. A second magnet groove is provided at the center of the second metal gear. The second radial magnet is placed in the second magnet groove. The center position of the second TMR angle sensor is placed corresponding to the center position of the second radial magnet. The second radial magnet is placed directly above the second TMR angle sensor within a set distance range. The output end of the second TMR angle sensor is signal-connected to the second input end of the data processing module. The second TMR angle sensor is used to detect the change in the magnetic field angle of the second radial magnet and then output a second current absolute value angle signal to the data processing module.

[0012] Preferably, the data processing module includes a first data acquisition unit and a second data acquisition unit, the input end of the first data acquisition unit is signal-connected to the output end of the first TMR angle sensor, the first data acquisition unit is used to receive the first current absolute value angle signal, the input end of the second data acquisition unit is signal-connected to the output end of the second TMR angle sensor, and the second data acquisition unit is used to receive the second current absolute value angle signal.

[0013] Preferably, the data processing module further comprises a data processing unit and a data output unit, wherein a first input terminal of the data processing unit is signal-connected to an output terminal of the first data acquisition unit, a second input terminal of the data processing unit is signal-connected to an output terminal of the second data acquisition unit, and an output terminal of the data processing unit is signal-connected to an input terminal of the data output unit;

[0014] The data processing unit is used to receive the first current absolute value angle signal and the second current absolute value angle signal, perform data integration processing on the first current absolute value angle signal and the second current absolute value angle signal, and output the integrated data signal to the data output unit. The data output unit is used to receive the integrated data signal and output the integrated data signal.

[0015] Preferably, the data receiving module includes a data input unit and a data level conversion unit, the input end of the data input unit is signal-connected to the output end of the data output unit, the output end of the data input unit is signal-connected to the input end of the data level conversion unit, the data input unit is used to receive the integrated data signal and output the integrated data signal to the data level conversion unit, and the data level conversion unit is used to receive the integrated data signal, convert the integrated data signal into a TTL level signal and output it.

[0016] Preferably, the data receiving module also includes a USB data output unit, and the input end of the USB data output unit is signal-connected to the output end of the data level conversion unit. The USB data output unit is used to receive the TTL level signal, convert the TTL level signal into a USB protocol signal, and output the USB protocol signal to the host computer.

[0017] Preferably, a first SPI bus is used to transmit signals between the first TMR angle sensor and the first data acquisition unit, and a second SPI bus is used to transmit signals between the second TMR angle sensor and the second data acquisition unit.

[0018] Preferably, a RS422 bus is used for signal transmission between the data output unit in the data processing module and the data input unit in the data receiving module.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. The outer teeth of the first metal gear are meshed with the camera ZOOM rotating gear for transmission. A first magnet groove is provided at the center of the first metal gear. The first radial magnet is placed in the first magnet groove. The center position of the first TMR angle sensor is placed corresponding to the center position of the first radial magnet. The first TMR angle sensor is used to detect the change of the magnetic field angle of the first radial magnet and output the first current absolute value angle signal, so as to detect and read the camera ZOOM position, thereby improving the accuracy of the camera ZOOM position detection and reading;

[0021] 2. With the help of the external teeth of the second metal gear and the rotating gear of the camera FCOUS for meshing transmission, a second magnet groove is set at the center of the second metal gear, and the second radial magnet is placed in the second magnet groove. The center position of the second TMR angle sensor is placed corresponding to the center position of the second radial magnet. The second TMR angle sensor is used to detect the change of the magnetic field angle of the second radial magnet and output the second current absolute value angle signal, so as to detect and read the position of the camera FCOUS, thereby improving the accuracy of the detection and reading of the camera FCOUS position. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a module diagram of a camera ZOOM and FCOUS position detection and reading device mainly embodied in this embodiment;

[0023] Figure 2 This is a schematic diagram of the structure of the first angle position detection unit mainly embodied in this embodiment;

[0024] Figure 3 This is a schematic diagram of the structure of the second angle position detection unit mainly embodied in this embodiment;

[0025] Figure 4 This is a schematic diagram of the modules of the position detection unit and the data processing module mainly embodied in this embodiment;

[0026] Figure 5 This is a module schematic diagram mainly embodying the data receiving module of this embodiment.

[0027] Figure numerals: 1. Position detection module; 11. First angular position detection unit; 111. First circuit board; 112. First shell; 113. First TMR angle sensor; 114. First metal gear; 115. First radial magnet; 12. Second angular position detection unit; 121. Second circuit board; 122. Second shell; 123. Second TMR angle sensor; 124. Second metal gear; 125. Second radial magnet; 2. Data processing module; 21. First data acquisition unit; 22. Second data acquisition unit; 23. Data processing unit; 24. Data output unit; 3. Data receiving module; 31. Data input unit; 32. Data level conversion unit; 33. USB data output unit. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings.

[0029] The embodiment of the present application discloses a camera ZOOM and FCOUS position detection and reading device.

[0030] Reference Figure 1 and Figure 2 A camera ZOOM and FCOUS position detection and reading device includes a position detection module 1, a data processing module 2 and a data receiving module 3.

[0031] The position detection module 1 comprises a first angle position detection unit 11 and a second angle position detection unit 12. The first angle position detection unit 11 is used to detect the camera ZOOM angle position and output a first current absolute value angle signal.

[0032] The first angle position detection unit 11 includes a first circuit board 111, a first shell 112, a first TMR angle sensor 113, a first metal gear 114 and a first radial magnet 115. The first shell 112 is installed on the first circuit board 111, and the first TMR angle sensor 113, the first metal gear 114 and the first radial magnet 115 are installed in the first shell 112. The outer teeth of the first metal gear 114 are engaged with the camera ZOOM rotating gear for transmission. A first magnet groove is provided at the center of the first metal gear 114, and the first radial magnet 115 is placed in the first magnet groove. The center position of the first TMR angle sensor 113 is placed corresponding to the center position of the first radial magnet 115, and the first radial magnet 115 is placed directly above the first TMR angle sensor 113 within a set distance range, where the set distance range is 1mm to 2mm.

[0033] The output end of the first TMR angle sensor 113 is signal-connected to the first input end of the data processing module 2 . The first TMR angle sensor 113 is used to detect the magnetic field angle change of the first radial magnet 115 and then output a first current absolute value angle signal to the data processing module 2 .

[0034] It should be pointed out that the first TMR angle sensor 113 in the embodiment of the present application utilizes the tunnel magnetoresistance effect of the magnetic multilayer film material to sense the magnetic field generated by the first radial magnet 115, and can sense the angle change of the first radial magnetic field above the first TMR angle sensor 113, and its single-turn minimum resolution can reach 1 / 65535*360°.

[0035] Reference Figure 1 and Figure 3 The second angle position detection unit 12 is used to detect the angle position of the camera FCOUS and output a second current absolute angle signal. The second angle position detection unit 12 includes a second circuit board 121, a second housing 122, a second TMR angle sensor 123, a second metal gear 124 and a second radial magnet 125. The second TMR angle sensor 123 and the second housing 122 are mounted on the second circuit board 121. The second TMR angle sensor 123, the second metal gear 124 and the second radial magnet 125 are mounted in the second housing 122. The outer teeth of the second metal gear 124 are meshed with the rotating gear of the camera FCOUS for transmission. A second magnet groove is provided at the center of the second metal gear 124. The second radial magnet 125 is placed in the second magnet groove. The center position of the second TMR angle sensor 123 is placed corresponding to the center position of the second radial magnet 125. The second radial magnet 125 is placed directly above the second TMR angle sensor 123 within a set distance range, and the set distance range is 1mm to 2mm.

[0036] The output end of the second TMR angle sensor 123 is signal-connected to the second input end of the data processing module 2 . The second TMR angle sensor 123 is used to detect the magnetic field angle change of the second radial magnet 125 and then output a second current absolute value angle signal to the data processing module 2 .

[0037] It should be pointed out that the second TMR angle sensor 123 in the embodiment of the present application utilizes the tunnel magnetoresistance effect of the magnetic multilayer film material to sense the magnetic field generated by the second radial magnet 125, and can sense the angle change of the first radial magnetic field above the second TMR angle sensor 123. Its single-turn minimum resolution can reach 1 / 65535*360°.

[0038] Reference Figure 1 and Figure 4The data processing module 2 includes a first data acquisition unit 21, a second data acquisition unit 22, a data processing unit 23 and a data output unit 24. The input end of the first data acquisition unit 21 is signal-connected to the output end of the first TMR angle sensor 113, and the output end of the first data acquisition unit 21 is signal-connected to the first input end of the data processing unit 23. The first data acquisition unit 21 is used to receive the first current absolute value angle signal and then output it to the data processing unit 23.

[0039] It should be noted that in the embodiment of the present application, the first SPI bus is used for signal transmission between the first TMR angle sensor 113 and the first data acquisition unit 21. In practical applications, a self-locking aviation plug can be used to connect to the first SPI bus to ensure the quality of signal transmission, wherein the length of the first SPI bus is set to 100 mm to ensure the stability of the connection of the first SPI bus.

[0040] The input end of the second data acquisition unit 22 is signal-connected to the output end of the second TMR angle sensor 123, and the output end of the second data acquisition unit 22 is signal-connected to the second input end of the data processing unit 23. The second data acquisition unit 22 is used to receive the second current absolute value angle signal and then output it to the data processing unit 23.

[0041] It should be noted that in the embodiment of the present application, the second SPI bus is used for signal transmission between the second TMR angle sensor 123 and the second data acquisition unit 22. In practical applications, a self-locking aviation plug can be used to connect to the second SPI bus to ensure the quality of signal transmission, wherein the length of the second SPI bus is set to 100 mm to ensure the stability of the second SPI bus connection.

[0042] The output end of the data processing unit 23 is signal-connected to the input end of the data output unit 24; the data processing unit 23 is used to receive the first current absolute value angle signal and the second current absolute value angle signal, perform data integration processing on the first current absolute value angle signal and the second current absolute value angle signal, and output the integrated data signal to the data output unit 24, and the data output unit 24 is used to receive the integrated data signal and output the integrated data signal.

[0043] Reference Figure 1 and Figure 5The data receiving module 3 includes a data input unit 31, a data level conversion unit 32 and a USB data output unit 33. The input end of the data input unit 31 is signal-connected to the output end of the data output unit 24, and the output end of the data input unit 31 is signal-connected to the input end of the data level conversion unit 32. The data input unit 31 is used to receive the integrated data signal and output the integrated data signal to the data level conversion unit 32.

[0044] It should be noted that in the embodiment of the present application, the RS422 bus is used for signal transmission between the data input unit 31 and the data output unit 24. In practical applications, the use of the RS422 bus for signal transmission meets the requirements of long-distance data transmission, while ensuring a stable connection of the data line, and a self-locking aviation plug can be used for connection.

[0045] The output end of the data level conversion unit 32 is signal-connected to the input end of the USB data output unit 33 . The data level conversion unit 32 is used for receiving the integrated data signal, converting the integrated data signal into a TTL level signal, and outputting the signal to the USB data output unit 33 .

[0046] The USB data output unit 33 is used to receive the TTL level signal, convert the TTL level signal into a USB protocol signal, and output the USB protocol signal to the host computer.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A camera ZOOM, FCOUS position detection and reading device, characterized in that: include: The position detection module (1) comprises a first angle position detection unit (11) and a second angle position detection unit (12), wherein the first angle position detection unit (11) is used to detect the camera ZOOM angle position and output a first current absolute value angle signal, and the second angle position detection unit (12) is used to detect the camera FCOUS angle position and output a second current absolute value angle signal; A data processing module (2): configured to be signal-connected to an output end of the first angle position detection unit (11) and an output end of the second angle position detection unit (12), and used to receive the first current absolute value angle signal and the second current absolute value angle signal and output an integrated data signal after data processing; A data receiving module (3) is configured to be signal-connected to the output end of the data processing module (2), and is used to receive the integrated data signal and perform level signal conversion before outputting it to the host computer; The first angle position detection unit (11) comprises a first circuit board (111), a first shell (112), a first TMR angle sensor (113), a first metal gear (114) and a first radial magnet (115); the first TMR angle sensor (113) and the first shell (112) are mounted on the first circuit board (111); the first TMR angle sensor (113), the first metal gear (114) and the first radial magnet (115) are mounted in the first shell (112); the outer teeth of the first metal gear (114) mesh with the camera ZOOM rotating gear for transmission; the first metal gear (114) is A first magnet groove is arranged at the center, the first radial magnet (115) is placed in the first magnet groove, the center position of the first TMR angle sensor (113) is placed corresponding to the center position of the first radial magnet (115), the first radial magnet (115) is placed directly above the first TMR angle sensor (113) and within a set distance range, the output end of the first TMR angle sensor (113) is signal-connected to the first input end of the data processing module (2), and the first TMR angle sensor (113) is used to detect the change of the magnetic field angle of the first radial magnet (115) and then output a first current absolute value angle signal to the data processing module (2).

2. A camera ZOOM, FCOUS position detection and reading device according to claim 1, characterized in that: The second angle position detection unit (12) comprises a second circuit board (121), a second housing (122), a second TMR angle sensor (123), a second metal gear (124) and a second radial magnet (125); the second TMR angle sensor (123) and the second housing (122) are mounted on the second circuit board (121); the second TMR angle sensor (123), the second metal gear (124) and the second radial magnet (125) are mounted in the second housing (122); the outer teeth of the second metal gear (124) mesh with the rotating gear of the camera FCOUS for transmission; the second metal gear (124) A second magnet groove is arranged at the center, the second radial magnet (125) is placed in the second magnet groove, the center position of the second TMR angle sensor (123) is placed corresponding to the center position of the second radial magnet (125), the second radial magnet (125) is placed directly above the second TMR angle sensor (123) and within a set distance range, the output end of the second TMR angle sensor (123) is signal-connected to the second input end of the data processing module (2), and the second TMR angle sensor (123) is used to detect the change in the magnetic field angle of the second radial magnet (125) and then output a second current absolute value angle signal to the data processing module (2).

3. A camera ZOOM, FCOUS position detection and reading device according to claim 2, characterized in that: The data processing module (2) comprises a first data acquisition unit (21) and a second data acquisition unit (22); an input end of the first data acquisition unit (21) is signal-connected to an output end of the first TMR angle sensor (113); the first data acquisition unit (21) is used to receive the first current absolute value angle signal; an input end of the second data acquisition unit (22) is signal-connected to an output end of the second TMR angle sensor (123); the second data acquisition unit (22) is used to receive the second current absolute value angle signal.

4. A camera ZOOM, FCOUS position detection and reading device according to claim 3, characterized in that: The data processing module (2) further comprises a data processing unit (23) and a data output unit (24), wherein a first input end of the data processing unit (23) is signal-connected to an output end of the first data acquisition unit (21), a second input end of the data processing unit (23) is signal-connected to an output end of the second data acquisition unit (22), and an output end of the data processing unit (23) is signal-connected to an input end of the data output unit (24); The data processing unit (23) is used to receive the first current absolute value angle signal and the second current absolute value angle signal, perform data integration processing on the first current absolute value angle signal and the second current absolute value angle signal, and output the integrated data signal to the data output unit (24); the data output unit (24) is used to receive the integrated data signal and output the integrated data signal.

5. A camera ZOOM, FCOUS position detection and reading device according to claim 4, characterized in that: The data receiving module (3) comprises a data input unit (31) and a data level conversion unit (32); an input end of the data input unit (31) is signal-connected to an output end of the data output unit (24); an output end of the data input unit (31) is signal-connected to an input end of the data level conversion unit (32); the data input unit (31) is used to receive the integrated data signal and output the integrated data signal to the data level conversion unit (32); and the data level conversion unit (32) is used to receive the integrated data signal, convert the integrated data signal into a TTL level signal, and output the signal.

6. A camera ZOOM, FCOUS position detection and reading device according to claim 5, characterized in that: The data receiving module (3) further comprises a USB data output unit (33), the input end of the USB data output unit (33) being signal-connected to the output end of the data level conversion unit (32), the USB data output unit (33) being used for receiving the TTL level signal, converting the TTL level signal into a USB protocol signal, and outputting the USB protocol signal to a host computer.

7. A camera ZOOM, FCOUS position detection and reading device according to claim 6, characterized in that: A first SPI bus is used for signal transmission between the first TMR angle sensor (113) and the first data acquisition unit (21), and a second SPI bus is used for signal transmission between the second TMR angle sensor (123) and the second data acquisition unit (22).

8. A camera ZOOM and FCOUS position detection and reading device according to claim 7, characterized in that: The data output unit (24) in the data processing module (2) and the data input unit (31) in the data receiving module (3) use an RS422 bus for signal transmission.

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