CN212484096U - Time precision detection device - Google Patents
Time precision detection device Download PDFInfo
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- CN212484096U CN212484096U CN202021184608.1U CN202021184608U CN212484096U CN 212484096 U CN212484096 U CN 212484096U CN 202021184608 U CN202021184608 U CN 202021184608U CN 212484096 U CN212484096 U CN 212484096U
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Abstract
The utility model discloses a time precision detection device, which comprises a frame, wherein a tray component for fixing a movement to be detected is arranged on the frame, the movement to be detected comprises a dial plate with a pointer, and an auxiliary graph is arranged on the dial plate; the image acquisition component is used for acquiring image information of the movement to be detected; the storage component is used for storing virtual dials corresponding to different types of auxiliary graphs; a signal receiving section for receiving a frequency signal of a standard time; the control component is used for acquiring the image information of the movement to be tested and calling the corresponding virtual dial plate to determine the time data to be tested; and synchronously generating standard time data; and the data comparison part is arranged on the rack, electrically connected with the control part and used for comparing the time data to be measured with the standard time data, and outputting the travel time error by the control part. Detection device's core dial plate on be equipped with auxiliary graph, reduce image recognition's error rate.
Description
Technical Field
The utility model relates to a time accuracy testing device especially relates to a time accuracy testing device that the accuracy is high.
Background
At present, the method used inside and outside China in the detection process of the travel time precision of the mechanical watch is generally realized by a watch calibrator, and the method is to use a microphone to pick up the sound generated by the collision of an escapement mechanism in the travel time process of a movement, arrange the sound, calculate and finally output a day difference value. The travel time precision measured by the method still has certain error with the real travel time precision of the watch.
Chinese patent publication No. CN 109062026 a discloses a time precision measuring instrument and a measuring method thereof, which obtains the time of a watch dial by an image processing technology and compares the time with standard time to determine the time precision of the watch. However, the scheme still has the problems of some defects, single movement detection and low detection precision.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a time accuracy detection device to solve the technical problem who mentions in the background art.
In order to achieve the above object, the present invention provides a time precision detecting device, which has the following specific technical scheme:
a time accuracy detection apparatus comprising:
the device comprises a rack, wherein a tray assembly used for fixing a machine core to be tested is arranged on the rack, the machine core to be tested comprises a dial plate with a pointer, and an auxiliary graph used for confirming the type of the machine core is arranged on the dial plate;
the image acquisition component is fixed on the rack opposite to the tray component and is used for acquiring the image information of the movement to be detected;
the storage component is arranged on the rack and used for storing virtual dials corresponding to different types of auxiliary graphs;
the signal receiving component is arranged on the rack and used for receiving a frequency signal of standard time;
the control part is arranged on the rack, the storage part and the signal receiving part are electrically connected with the control part, and the control part is used for acquiring the image information of the movement to be tested and calling the corresponding virtual dial plate to determine the time data to be tested; and synchronously generating standard time data;
and the data comparison part is arranged on the rack, electrically connected with the control part and used for comparing the time data to be measured with the standard time data, and outputting the travel time error by the control part.
Furthermore, install unified dial plate on the core that awaits measuring, the dial plate does not have the scale mark, and the dial plate is the pure look dial plate, and the colour contrast of dial plate colour and table needle is obvious.
Furthermore, the number of the auxiliary graphs at least comprises two, and the at least two auxiliary graphs are respectively arranged at different time point positions of the dial plate.
Furthermore, the auxiliary patterns are two patterns with different sizes and/or shapes, and the two auxiliary patterns are arranged far away from each other.
Furthermore, the storage part is electrically connected with the control part, and after the control part acquires the image information, the corresponding virtual dial plate in the storage part is called, and the time data to be measured is determined according to the position of the pointer on the virtual dial plate.
Further, the tray assembly comprises a body, a clamp used for fixing the core to be tested is arranged in the body, an automatic winding device is arranged in a station to be tested on one side of the clamp, and a watch of the core to be tested is arranged in the automatic winding device.
Further, the image acquisition component is a high-speed visual identification lens.
Further, the standard time data is obtained by acquiring a frequency signal of the atomic clock through the signal receiving part to obtain standard time, and the standard time data, the standard fraction data and the standard second data are obtained through the standard time.
Furthermore, a second scale mark is arranged on the virtual dial plate, and the second scale mark equally divides the virtual dial plate into 60 x 10nWherein n is a natural number.
Further, the detection device also comprises a display component arranged on the body and used for outputting a detection report.
The utility model discloses a time accuracy testing device has following advantage:
time precision measurement device's core dial plate be pure color, do not set up the scale mark, be equipped with the auxiliary graph on the dial plate, confirm the type of core and put the condition through the auxiliary graph, effectively reduce the influence of scale mark to image recognition error rate, when reading the time data that awaits measuring, the table needle is synchronous to virtual dial plate, the scale on the virtual dial plate sets up to 60's multiple, thereby confirm to detect the precision according to the measuring needs, can select suitable image acquisition part as required, satisfy various frequency mechanical watch, the stopwatch precision detection of walking by time, wide application scope, reduce measuring error.
Drawings
FIG. 1 is a front view of the movement to be tested of the present invention;
FIG. 2 is a schematic structural view of the movement to be measured of the present invention fixed on the tray assembly;
fig. 3 is a side view of the clamp of the present invention;
fig. 4 is a flowchart of the time accuracy detecting method of the present invention.
The reference numbers in the figures illustrate: 1. a dial plate; 11. a second hand; 12. needle separation; 13. a hour hand; 2. an auxiliary graphic; 3. a tray assembly; 4. a clamp; 41. a stopper; 5. automatic winding up ware.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, the time precision detecting device of the present invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses a time accuracy detection device, include:
the device comprises a rack, wherein a tray assembly 3 for fixing a movement to be tested is arranged on the rack, the movement to be tested comprises a dial plate 1, a hand is rotatably arranged at the center of the dial plate 1 and comprises an hour hand 13, a minute hand 12 and a second hand 11, and an auxiliary graph 2 for confirming the type of the movement and the arrangement direction of the movement is arranged on the dial plate 1;
the image acquisition component is fixed on the rack opposite to the tray component 3 and is used for acquiring the image information of the movement to be detected;
the storage component is arranged on the rack and used for storing virtual dials corresponding to the auxiliary graphs 2 of different types;
the signal receiving component is arranged on the rack and used for receiving a frequency signal of standard time;
the control part is arranged on the rack, the storage part and the signal receiving part are electrically connected with the control part, and the control part is used for acquiring the image information of the movement to be tested, calling the corresponding virtual dial plate and determining the time data to be tested according to the position of the pointer on the virtual dial plate; for synchronously generating standard time data;
and the data comparison component is arranged on the rack, is electrically connected with the control component and is used for comparing the time data to be measured with the standard time data and outputting the travel time error.
As shown in fig. 1, a uniform dial 1 is installed on the movement to be measured, the dial 1 is a pure-color dial 1 and has no scale marks, the colors of the dial 1 and the hands have obvious contrast, generally, the dial 1 can be a white dial 1, the hands are black, the contrast pair between the dial 1 and the hands is improved, the number of the auxiliary patterns 2 is at least two, such as 2-12, and at least two auxiliary patterns 2 are respectively arranged at different time points of the dial 1. As shown in fig. 1, the number of the auxiliary graphics 2 is 2, and the two auxiliary graphics 2 are graphics with different sizes and/or shapes, in fig. 1, the two auxiliary graphics 2 are two circles with different sizes, and the two circles can position the mounting and clamping positions of the dial 1 and the hand and the rotation angle of the hand with respect to the virtual dial at 12 points, besides, the auxiliary graphics 2 can also be a circle, a star, etc. Generally, for the movement to be detected of different types, two auxiliary patterns 2 can be respectively arranged at positions of dial plate 1, such as 12 point positions, 6 point positions, 3 point positions, 9 point positions, 12 point positions, 3 point positions and the like, no scale mark is arranged on dial plate 1, and when an image acquisition part takes a picture of dial plate 1, the recognition error rate of image information is reduced, and the detection accuracy is greatly increased. Generally, the distance between the two auxiliary graphics 2 cannot be too close, the identification difficulty of image information may be increased if the distance is too close, the model of the movement is determined through the auxiliary graphics 2, so that the detection standard and the placing direction of the movement are determined, meanwhile, the connecting line of the centers of the two auxiliary graphics 2 has directivity, the directions of the graphics with different sizes or the directions of different shapes can be specified, and therefore a virtual direction line is arranged in the circular movement to determine the placing direction of the circle.
As shown in fig. 2, the tray assembly 3 includes a square body, the body is a box body with an upward opening, a clamp 4 for fixing the movement to be measured is arranged in the body, an automatic winding device 5 is arranged in a position to be measured on one side of the clamp 4, the automatic winding device is fixed on the position to be measured through the clamp 4, the movement to be measured is not loosened at any position, and a watch handle of the movement to be measured is arranged in the automatic winding device 5, so that the movement to be measured can be wound automatically. As shown in fig. 3, the fixture 4 is a groove with a U-shaped cross section, the inner sides of the side walls of the groove are respectively provided with a stop block 41, the movement to be measured is inserted into the fixture 4 from one side of the groove, and the watch stick is placed in the automatic winding up device 5.
The image acquisition component is a high-speed visual identification lens, the standard time data obtains the standard time by obtaining the frequency signal of the atomic clock through the signal receiving component, the accuracy is high, and the standard time value, the standard fraction value and the standard second value are obtained through the standard time. The atomic clock is connected to the signal receiving part through a data communication cable, and the signal receiving part is connected with the control part.
The principle of observation time for the human eye is: the dial 1 is equally divided into 12 minutes by the time scale lines, and the hour hand 13 rotates 30 degrees after each hour; dividing the dial 1 into 60 parts by dividing scale lines, and rotating the minute hand 12 for 6 degrees after each minute; the second scale line equally divides the dial 1 into 60 parts, and the second hand 11 rotates by 6 ° every second passes. In this application, set up the second scale mark on the virtual dial plate, the second scale mark equally divides virtual dial plate into 60 x 10nAnd (c) parts, wherein n is a natural number such as 0, 1, 2, 3 and the like. Preferably, n is 10, the second scale line equally divides the virtual dial into 600 parts, so that the reading of the second hand 11 is accurate to the order of 0.1 second, thereby satisfying the detection of the time-lapse precision of various frequency mechanical meters, stopwatches and the like and greatly reducing the measurement error.
The detection device also comprises a display component arranged on the body and used for outputting a detection report, wherein the detection report comprises time data T1 to be detected, standard time data T0, a travel time error E0 and an average day difference
Mean daily variation
Maximum daily variation VmaxThe horizontal and vertical difference D, the maximum daily deviation P, the temperature coefficient C, the recovery difference R and the like, and a paper detection report is generated.
E0 is the difference between the time data T1 to be measured and the standard time data T0, and is classified to be measured at the same time point on different days, so as to respectively obtain the watch travel time errors E on different daysiI is the number of days, the daily difference Mi＝Ei-Ei-1From daily MiCan obtain average daily difference
Mean daily variation
Maximum daily variation VmaxThe device comprises a base, a horizontal and vertical difference D, a maximum daily deviation P, a temperature coefficient C and a recovery difference R.
The application also provides a detection method using the time precision detection device, which mainly comprises the following steps:
the core to be tested is fixed in the tray assembly 3, and the automatic winding device 5 winds up the core to be tested;
at a certain moment, the image acquisition part aligns to the movement to be detected and photographs the dial plate 1 of the movement to be detected to form image information;
the control part calls a corresponding pre-stored virtual dial plate in the storage part according to the auxiliary graph 2 on the dial plate 1;
the control part synchronizes the pointer in the image information to the virtual dial and converts the pointer into time data;
the control part synchronously acquires the standard time of the signal receiving part;
the control part converts the standard time into standard time data;
and comparing the time data to be measured with the standard time data to determine the travel time error.
The time data to be measured comprises hour hand data to be measured, minute hand data to be measured and second hand data to be measured which are determined according to the image information; the standard time data includes standard time data, standard fraction data, and standard second data determined based on the frequency signal received by the signal receiving section.
The detection method also comprises the steps of outputting a detection report by the display part and generating a paper detection report, wherein the detection report comprises the time data T1 to be detected, the standard time data T0, the travel time error E0 and the average daily difference
Mean daily variation
Maximum daily variation VmaxThe horizontal and vertical difference D, the maximum daily deviation P, the temperature coefficient C, the recovery difference R and the like.
This time accuracy testing device's core dial plate 1 is pure color, not set up the scale mark, be equipped with supplementary figure 2 on the dial plate 1, confirm the type of core and put the condition through supplementary figure 2, effectively reduce the influence of scale mark line to image identification error rate, when reading the time data that awaits measuring, the table needle is synchronous to virtual dial plate, the scale on the virtual dial plate sets up to the multiple of 60, thereby confirm the detection precision according to the measuring needs, can select suitable image acquisition part as required, satisfy various frequency mechanical watch, the chronograph precision detects, wide application scope, reduce measuring error.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.
Claims (10)
1. The time accuracy detecting apparatus is characterized by comprising:
the device comprises a rack, wherein a tray assembly (3) for fixing a to-be-tested movement is arranged on the rack, the to-be-tested movement comprises a dial plate (1) with a pointer, and an auxiliary graph (2) for confirming the type of the movement is arranged on the dial plate (1);
the image acquisition component is fixed on the rack opposite to the tray component (3) and is used for acquiring the image information of the movement to be detected;
the storage component is arranged on the rack and used for storing virtual dials corresponding to different types of auxiliary graphs (2);
the signal receiving component is arranged on the rack and used for receiving a frequency signal of standard time;
the control part is arranged on the rack, the storage part and the signal receiving part are electrically connected with the control part, and the control part is used for acquiring the image information of the movement to be tested and calling the corresponding virtual dial plate to determine the time data to be tested; and synchronously generating standard time data;
and the data comparison part is arranged on the rack, electrically connected with the control part and used for comparing the time data to be measured with the standard time data, and outputting the travel time error by the control part.
2. The time precision detection device according to claim 1, characterized in that a uniform dial (1) is installed on the movement to be detected, the dial (1) has no scale marks, the dial (1) is a pure color dial, and the color of the dial (1) is obviously contrasted with that of the hands.
3. The time accuracy detecting apparatus according to claim 2, wherein the number of the auxiliary patterns (2) includes at least two, and at least two auxiliary patterns (2) are respectively disposed at different time points of the dial (1).
4. The time accuracy detecting apparatus according to claim 3, wherein the auxiliary pattern (2) is two patterns different in size and/or shape, and the two auxiliary patterns (2) are disposed apart from each other.
5. The time accuracy detecting device according to claim 3, wherein the storage unit is electrically connected to the control unit, and the control unit calls a corresponding virtual dial in the storage unit after acquiring the image information, and determines the time data to be detected according to the position of the pointer on the virtual dial.
6. The time precision detection device according to claim 1, characterized in that the tray assembly (3) comprises a body, a clamp (4) for fixing the movement to be detected is arranged in the body, an automatic winding up device (5) is arranged in the station to be detected on one side of the clamp (4), and a watch handle of the movement to be detected is arranged in the automatic winding up device (5).
7. The apparatus according to claim 1, wherein the image capturing means is a high-speed visual recognition lens.
8. The time accuracy detecting apparatus according to claim 1, wherein the standard time data is obtained by the signal receiving section obtaining a frequency signal of the atomic clock to obtain a standard time, and the standard time data, the standard fraction data, and the standard second data are obtained by the standard time.
9. The apparatus according to claim 5, wherein the virtual dial is provided with second scale marks, and the second scale marks divide the virtual dial into 60 x 10 equallynAnd (c) parts, wherein n is a natural number.
10. The time accuracy detecting apparatus according to claim 1, wherein the detecting apparatus further comprises a display member provided on the body for outputting a detection report.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021184608.1U CN212484096U (en) | 2020-06-23 | 2020-06-23 | Time precision detection device |
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| CN202021184608.1U CN212484096U (en) | 2020-06-23 | 2020-06-23 | Time precision detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113835329A (en) * | 2020-06-23 | 2021-12-24 | 天津海鸥表业集团有限公司 | Time precision detection device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113835329A (en) * | 2020-06-23 | 2021-12-24 | 天津海鸥表业集团有限公司 | Time precision detection device and method |
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