Pointer dial visual reading device and pointer dial monitoring system

Abstract

The utility model relates to a visual reading device for a pointer dial plate, which automatically reads the reading of an instrument panel through machine vision, and comprises an optical input part arranged right in front of the pointer dial plate; the positioning assembly is set to be used for extracting dial position information from the optical original information and extracting pointer position information, scale position information and nominal value position information from the optical original information; the character recognition part is used for generating nominal value data according to the optical original information and the nominal value position information; the axis fitting part is used for determining the rotating axis position of the pointer according to the scale position information; and the reading operation part is set to be used for determining nominal value data of the scale pointed by the pointer according to the rotation axis position, the scale position information and the pointer position information. The utility model also relates to a pointer dial plate monitoring system adopting the pointer dial plate visual reading device.

Description

Technical Field

[0001] This utility model relates to a device for reading analog watch dials, and more particularly to a device for reading analog watch dials. It also relates to an analog watch dial monitoring system for monitoring multiple analog watch dials. Background Technology

[0002] In modern production environments such as factories, multiple production equipment must work together to achieve automated production. However, in scenarios where production equipment is not fully integrated, or where traditional production equipment is used in conjunction with new automated production equipment, meter readers still need to come to the pointer-type instrument panel of the production equipment to manually observe the dial and read the data. As a result, the monitoring frequency and accuracy of production data are limited by the meter readers, making it impossible to read data from multiple points at a high frequency. Random errors or misreadings also occur during manual operation, affecting production efficiency.

[0003] Therefore, using automated equipment to replace manual visual reading of dashboard data in order to improve the production efficiency of traditional production equipment is a technical problem that urgently needs to be solved. Utility Model Content

[0004] The purpose of this invention is to provide a pointer dial reading device that automatically reads the dial readings using machine vision, reducing the need for manual labor in the production process, improving production efficiency, and eliminating the possibility of data anomalies caused by human error or misreading. This pointer dial reading device includes an optical input unit positioned directly in front of the pointer dial to acquire the original optical information of the dial. The pointer dial has a rotatable pointer, arc-shaped scales, and nominal values ​​corresponding to the scales. A positioning component is electrically connected to the optical input unit to acquire the original optical information from the optical input unit. The positioning component consists of a first positioning part and a second positioning part. The first positioning part is configured to extract dial position information from the original optical information, and the second positioning part is configured to extract pointer position information from the original optical information. The system includes: a positioning information unit, a scale position information unit, and a nominal value position information unit; a character recognition unit, electrically connected to the optical input unit and the second positioning unit, configured to generate nominal value data based on the optical raw information and the nominal value position information; an axis fitting unit, electrically connected to the second positioning unit, configured to determine the rotation axis position of the pointer based on the scale position information; and a reading calculation unit, electrically connected to the second positioning unit and the axis fitting unit, configured to determine the nominal value data of the scale pointed to by the pointer based on the rotation axis position, scale position information, and pointer position information.

[0005] Preferably, the pointer dial reading device further includes a housing, in which the positioning component, the character recognition unit, the axis fitting unit and the reading calculation unit are disposed, and the optical input part is an optical camera device.

[0006] Preferably, the optical input section is separate from the housing and electrically connected to the positioning component via a first flexible wire.

[0007] Preferably, the pointer dial reading device further includes an alarm, which is electrically connected to the reading calculation unit and is configured to send an alarm signal when the nominal value data meets preset conditions.

[0008] This utility model also provides a pointer dial monitoring system, which includes a central controller and at least two pointer dial reading devices. The optical input section of each pointer dial reading device is located next to an industrial device with a pointer dial. The central controller is connected to each pointer dial reading device via a data line.

[0009] Preferably, the data line is a second flexible conductor, or a wireless communication line established via a wireless adapter. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a pointer dial reading device according to a specific embodiment of the present invention;

[0011] Figure 2 This is a schematic diagram of the structure of a pointer dial monitoring system according to another specific embodiment of the present invention.

[0012] Label Explanation

[0013] 10. Hand dial reading device

[0014] 11 Optical Input Section

[0015] 12 Positioning Components

[0016] 121 First Positioning Department

[0017] 122 Second Positioning Section

[0018] 13 Character Recognition Department

[0019] 14 Axial Fitting Section

[0020] 15 Reading and Calculation Section

[0021] 16. Shell

[0022] 17 First flexible conductor

[0023] 18 Alarm

[0024] 20-pointer dial monitoring system

[0025] 21 Central Controller

[0026] 22 Wireless Communication Lines

[0027] 23 Second flexible conductor Detailed Implementation

[0028] The specific embodiments of this utility model will be described below with reference to the accompanying drawings.

[0029] Figure 1 A specific embodiment of an analog watch face reading device 10 is shown. The analog watch face reading device 10 includes a main body housed in a housing 16, the main body comprising a positioning component 12, a character recognition unit 13, an axis fitting unit 14, and a reading calculation unit 15. It also includes an optical input unit 11 separate from the main body, electrically connected to the main body via a first flexible wire 17. In this embodiment, the optical input unit 11 is a high-definition camera.

[0030] The positioning component 12 is electrically connected to the optical input section 11 via a signal line. The positioning component 12 includes a first positioning section 121 and a second positioning section 122 that are electrically connected. The input end of the first positioning section 121 is electrically connected to the output end of the optical input section 11. The second positioning section 122 has two input ends and one output end. One input end of the second positioning section 122 is electrically connected to the optical input section 11, and the other input end is electrically connected to the output end of the first positioning section 121.

[0031] The character recognition unit 13 has two input terminals, one of which is electrically connected to the output terminal of the optical input unit 11, and the other input terminal is electrically connected to the output terminal of the second positioning unit 122. The character recognition unit 13 is an optical character recognition (OCR) module. The input terminal of the axis fitting unit 14 is electrically connected to the output terminal of the second positioning unit 122.

[0032] The reading calculation unit 15 has three input terminals, which are electrically connected to the output terminals of the character recognition unit 13, the axis fitting unit 14, and the second positioning unit 122, respectively. The output terminal of the reading calculation unit 15 ( Figure 1 (Not shown in the image) is connected to the central controller 21 via a data line.

[0033] The pointer dial reading device 10 in this embodiment also includes an alarm 18, which is electrically connected to the output terminal of the reading calculation unit 15. When the output data of the reading calculation unit 15 meets preset conditions, the alarm 18 emits an alarm signal.

[0034] As a variation of this embodiment, the optical input unit 11 may also be disposed on the housing 16 and integrated with the main body.

[0035] The working method of the pointer dial reading device in this embodiment is as follows: the optical input unit is set in front of the pointer dial, and the dial, the scale and the pointer on it are all captured by the optical input unit as image information, that is, the original optical information;

[0036] After receiving image information through the data line, the first positioning unit 121 detects whether there is a dial object in the image, and extracts and saves the pixel position information of the detected dial object in the image, i.e., the dial position information.

[0037] The second positioning unit 122 receives image information and dial position information extracted by the first positioning unit 121 through a data line. Within the range of the dial position information, it detects the position of the scale and the pointer, and segments the scale, the nominal value corresponding to the scale, and the pixel position of the pointer from the corresponding area in the image information, i.e., scale position information, nominal value position information, and pointer position information.

[0038] The character recognition unit 13 receives image information from the optical input unit and nominal value position information from the second positioning unit 122. It then performs character recognition on the corresponding positions in the image, converting the optical information visible to the naked eye into computer-readable nominal value data. To improve the accuracy of the scale nominal value recognition, the character recognition unit 13 first distinguishes the characters at the nominal value positions in four different directions: 0°, 90°, 180°, and 270°. Then, it resets and rotates the image at the position according to the distinguished angles before performing character recognition. This ensures that the correct data can be read even when there is an angle on the scale of the dial being read.

[0039] The axis fitting unit 14 receives the scale position information from the second positioning unit 122, connects all scale positions in pairs, and then bisects each line perpendicularly. The intersection of each perpendicular bisector is the axis position around which the pointer rotates, i.e., the rotation axis position.

[0040] One input terminal of the reading calculation unit 15 receives nominal value data corresponding to each scale from the character recognition unit 13; another input terminal receives the rotation axis position from the axis fitting unit 14; and a third input terminal receives pointer position information from the second positioning unit 122. Based on the above three sets of data, the nominal value data corresponding to the scale pointed to by the pointer of the dial is determined.

[0041] Therefore, the pointer dial reading device of this embodiment obtains the digital information of the corresponding reading from the optical external features of the pointer dial, and its output data can be directly read and used by the computer system. It eliminates the possibility of human error by eliminating the need for manual reading and meter reading, and then inputting the data into the computer system via an input device. It also ensures that the dial data reading is not affected by the environment. Furthermore, since it is an automated device, it can continuously read the pointer dial, serving a monitoring function. Once an alarm is triggered, it can promptly issue an alarm message to remind the operator to handle the situation in a timely manner, avoiding delays caused by the time interval of manual meter reading.

[0042] Figure 2 Another embodiment of the present invention is shown: a pointer dial monitoring system 20, comprising a central controller 21 and multiple pointer dial reading devices 10. The optical input section 11 of each pointer dial reading device 10 is disposed in front of a pointer dial. The output terminals of the reading calculation sections 15 of each pointer dial reading device 10 are connected to the central controller 21. The central controller 21 includes an input port number not less than the number of pointer dial reading devices 10. A portion of the input ports of the central controller 21 are physical wire interfaces of second flexible wires 23, and another portion are wireless adapters. The output terminals of the reading calculation sections 15 of a portion of the pointer dial reading devices 10 are connected to the input terminals of the central controller 21 via the second flexible wires 23. The output terminals of the reading calculation sections 15 of the other portion of the pointer dial reading devices 10 are connected to the input terminals of the central controller 21 via wireless communication lines 22.

[0043] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above. Therefore, the scope of protection of the present invention should be defined by the appended claims. Furthermore, no reference numerals in the claims should be construed as limiting the scope of the claims. The word "comprising" does not exclude any means or steps not listed in other claims or the specification; words such as "first," "second," etc., are used only to indicate names and do not indicate any particular order. In this document, terms such as "parallel," "perpendicular," etc., are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacture or use.

Claims

1. A pointer dial reading device for reading the readings of a pointer dial, characterized in that, include: An optical input unit (11) is disposed in front of the pointer dial to acquire the original optical information of the pointer dial. The pointer dial has a rotatable pointer, an arc-shaped scale, and a nominal value corresponding to the scale. A positioning component (12) is electrically connected to the optical input unit (11) to obtain the original optical information from the optical input unit (11). The positioning component (12) is composed of a first positioning unit (121) and a second positioning unit (122). The first positioning unit (121) is configured to extract dial position information from the original optical information, and the second positioning unit (122) is configured to extract pointer position information, scale position information and nominal value position information from the original optical information. The character recognition unit (13) is electrically connected to the optical input unit (11) and the second positioning unit (122), and is configured to generate nominal value data based on the original optical information and the nominal value position information; The axis fitting part (14) is electrically connected to the second positioning part (122) and is configured to determine the rotation axis position of the pointer based on the scale position information; The reading calculation unit (15) is electrically connected to the second positioning unit (122) and the axis fitting unit (14), and is configured to determine the nominal value data of the scale pointed to by the pointer based on the rotation axis position, scale position information and pointer position information.

2. The pointer dial reading device according to claim 1, characterized in that, It also includes a housing (16), in which the positioning component (12), the character recognition unit (13), the axis fitting unit (14) and the reading calculation unit (15) are disposed.

3. The pointer dial reading device according to claim 2, characterized in that, The optical input section (11) is an optical camera device.

4. The pointer dial reading device according to claim 2 or 3, characterized in that, The optical input section (11) is separated from the housing (16) and electrically connected to the positioning component (12) via a first flexible wire (17).

5. The pointer dial reading device according to claim 4, characterized in that, It also includes an alarm (18) electrically connected to the reading calculation unit (15) and configured to send an alarm signal based on the nominal value data determined by the reading calculation unit (15).

6. The pointer dial reading device according to claim 5, characterized in that, The alarm (18) is configured to send an alarm signal when the nominal value data meets preset conditions.

7. A pointer dial monitoring system, characterized in that, The device includes a central controller (21) and at least two pointer dial reading devices (10) according to any one of claims 1 to 6, wherein the optical input section (11) of each pointer dial reading device (10) is disposed next to an industrial device having a pointer dial, and the central controller (21) is connected to each pointer dial reading device via a data line.

8. The pointer dial monitoring system according to claim 7, characterized in that, The data line is the second flexible conductor (23).

9. The pointer dial monitoring system according to claim 7, characterized in that, The data line is a wireless communication line (22) established through a wireless adapter.

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