Distributed photometer

Abstract

The utility model discloses a distributed photometer. The distributed photometer comprises a shell, a rotating motor, a rotating arm, a testing mechanism and a counterweight mechanism, the shell forms an accommodating cavity; the rotating motor is arranged in the containing cavity and comprises a rotating output shaft extending in the first linear direction, the rotating output shaft penetrates through the shell and extends out of the containing cavity, and a vibration sensor is arranged on the rotating output shaft; the rotating arm is connected to a rotating output shaft of the rotating motor and comprises a first arm and a second arm; the testing mechanism is connected to the first arm, and the testing mechanism moves on the first arm; the balance weight mechanism is arranged in the second arm or connected to the second arm and comprises a balance weight block and a balance weight driver, and the balance weight driver drives the balance weight block to move in the direction of the second straight line and enables the balance weight block to be lower than the vibration threshold value. According to the invention, automatic balancing of the distributed photometer can be realized, vibration caused by gravity center change is reduced, the equipment performance is improved, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The present application relates to the field of optics, and in particular to a distributed photometer. Background Art

[0002] In existing technology, the ideal operating state of a goniophotometer is that both ends of the rotating shaft have equal weight, so the only pressure on the bearings is the weight of the shaft itself. However, when using a goniophotometer, it must meet the following requirements: the light-emitting surface of the luminaire under test must be at the same height as the rotating shaft. Therefore, when installing test luminaires of different sizes, the position of the luminaire support platform varies. Coupled with the different weights of the luminaires under test, this makes it impossible to balance the goniophotometer at both ends, causing the center of gravity of the goniophotometer to shift. This in turn applies forces on the bearings that exceed the weight of the rotating shaft itself, causing vibration. This vibration generates noise and vibration wear, affecting the performance and service life of the device. Summary of the Invention

[0003] In view of the above problems, the purpose of the present application is to provide a distributed photometer, which can realize automatic balancing when using the photometer and reduce the vibration caused by the change of the center of gravity.

[0004] Based on the above purpose, the present application provides a distributed photometer for measuring the light distribution performance of a light source, including: a housing, a rotating motor, a rotating arm, a testing mechanism and a counterweight mechanism.

[0005] The shell forms a receiving cavity;

[0006] The rotary motor is disposed in the accommodating cavity, and includes a rotary output shaft extending along a first linear direction, the rotary output shaft extending through the housing to outside the accommodating cavity, and a vibration sensor is provided on the rotary output shaft;

[0007] The rotating arm extends in the direction of a second straight line perpendicular to the first straight line, the rotating arm is connected to the rotating output shaft of the rotating motor, and the rotating arm includes a first arm and a second arm respectively provided on both sides of the rotating output shaft;

[0008] The testing mechanism is connected to the first arm, and the testing mechanism is movable on the first arm along the direction of the second straight line;

[0009] The counterweight mechanism is arranged in the second arm or connected to the second arm. The counterweight mechanism includes a counterweight block and a counterweight driver that can drive the counterweight block to move along the direction of the second straight line. The counterweight driver controls the counterweight block according to the vibration information obtained by the vibration sensor, drives the counterweight block to move along the direction of the second straight line and makes it below the vibration threshold.

[0010] Furthermore, the counterweight driver is a screw driver or a cylinder driver.

[0011] Furthermore, the counterweight driver is a screw driver, and limit switches for controlling the movement range of the counterweight are provided at both ends of the screw driver.

[0012] Furthermore, the counterweight driver is a screw driver, which includes a drive motor, a coupling and a screw. The screw is connected to the drive motor through the coupling, and the coupling and the drive motor are coaxially arranged.

[0013] Furthermore, the counterweight driver is a cylinder driver, which includes a guide rail for controlling the movement of the counterweight block. Limit switches for controlling the movement range of the counterweight block are provided at both ends of the guide rail.

[0014] Furthermore, the goniophotometer further includes a control unit, and at least one of the vibration sensor, the rotation motor or the counterweight driver is connected to the control unit.

[0015] Furthermore, a displacement sensor is provided on the testing mechanism, and the counterweight driver obtains the displacement information of the testing mechanism from the displacement sensor and controls the counterweight block.

[0016] Furthermore, the goniophotometer further includes a control unit, and at least one of the vibration sensor, the rotation motor, the counterweight driver or the displacement sensor is connected to the control unit.

[0017] Furthermore, the testing mechanism includes a lamp arm and a testing platform connected to the lamp arm.

[0018] Furthermore, the testing mechanism also includes a testing motor, the testing motor is connected to the lamp arm, and the testing platform is connected to a testing output shaft of the testing motor.

[0019] The present application provides a vibration sensor and a counterweight mechanism for adjusting the center of gravity of the distributed photometer on the distributed photometer, so that when the distributed photometer is used, the counterweight mechanism automatically adjusts the center of gravity of the distributed photometer based on the vibration information collected by the vibration sensor until the vibration amount collected by the vibration sensor is lower than the vibration threshold, thereby realizing automatic balancing of the distributed photometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a distributed photometer provided in this application;

[0021] Figure 2 is a schematic structural diagram of another distributed photometer provided by the present application;

[0022] Figure 3 is a schematic diagram of the electrical connection with the control unit in the distributed photometer provided in the present application;

[0023] Figure 4 This is a structural schematic diagram of a counterweight mechanism in a distributed photometer provided by the present application;

[0024] Figure 5 is a structural schematic diagram of another counterweight mechanism in the distributed photometer provided by the present application;

[0025] Figure 6 It is a structural diagram of the testing mechanism in the distributed photometer provided in this application;

[0026] Figure 7 is a schematic diagram of another type of electrical connection with a control unit in the distributed photometer provided by the present application;

[0027] In the figure: 100, photometer; 101, first straight line; 102, second straight line; 11, housing; 12, rotating motor; 13, rotating arm; 14, testing mechanism; 15, counterweight mechanism; 16, control unit; 121, rotating output shaft; 122, vibration sensor; 131, first arm; 132, second arm; 141, displacement sensor; 142, lamp arm; 143, testing platform; 144, testing motor; 145, testing output shaft; 151, counterweight block; 152, counterweight driver; 153, limit switch; 1521, screw; 1522, coupling; 1523, drive motor; 1524, cylinder; 1525, guide rail. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the specific implementation of the present application will be clearly and completely described below in conjunction with the drawings in the implementation of the present application.

[0029] like Figure 1 As shown, an embodiment of the present application provides a goniophotometer 100 for measuring the light distribution performance of a light source. The goniophotometer 100 includes a housing 11, a rotating motor 12, a rotating arm 13, a testing mechanism 14, and a counterweight mechanism 15. The housing 11 forms a receiving chamber, and the rotating motor 12 is disposed within the receiving chamber formed by the housing 11. The rotating motor 12 includes a rotating output shaft 121, which extends through the housing 11 and out of the receiving chamber. The rotating motor 12 drives the rotating output shaft 121 to rotate. For ease of illustration, a first straight line 101 is defined that is parallel to the direction in which the rotating output shaft 121 extends, i.e., the rotating output shaft 121 extends out of the receiving chamber along the direction of the first straight line 101. A vibration sensor 122 is disposed on the rotating output shaft 121. The vibration sensor 122 collects vibration signals generated by changes in the center of gravity during use of the goniophotometer 100, providing a data basis for configuring the center of gravity balance of the goniophotometer 100.

[0030] The rotating arm 13 is connected to the rotary output shaft 121 of the rotating motor 12 and defines a second line 102 perpendicular to the first line 101. The rotating arm 13 extends along the second line 102 and includes a first arm 131 and a second arm 132, respectively disposed on either side of the rotary output shaft 121. A testing mechanism 14 is connected to the first arm 131 of the rotating arm 13 and is configured to move along the second line 102 on the first arm 131. The counterweight mechanism 15 is configured to be disposed within or connected to the second arm 132. The counterweight mechanism 15 includes a counterweight 151 and a counterweight driver 152. The counterweight driver 152 is configured to drive the counterweight 151 based on vibration information acquired by the vibration sensor 122, causing the counterweight 151 to move along the second line 102, thereby adjusting the center of gravity of the goniophotometer 100 and reducing vibration caused by the center of gravity change until the vibration level detected by the vibration sensor 122 falls below a vibration threshold.

[0031] When using the goniophotometer 100, a luminaire under test is placed on the test platform 143. The height of the test mechanism 14 is adjusted according to the size of the luminaire under test and the test requirements. The rotary motor 12 is activated, driving the rotary output shaft 121 to rotate, thereby driving the rotary arm 13 to rotate, which in turn drives the test mechanism 14 to rotate. The vibration sensor 122 collects vibration information, and the counterweight driver 152 in the counterweight mechanism 15 drives the counterweight 151 to move based on the vibration information, adjusting the center of gravity of the goniophotometer 100 and reducing the vibration caused by the change in center of gravity. The goniophotometer 100 is automatically balanced until the vibration level detected by the vibration sensor 122 falls below a vibration threshold. The counterweight driver 152 then stops driving the counterweight 151, achieving automatic balancing of the goniophotometer 100. After achieving balancing, the goniophotometer 100 performs the test on the luminaire under test, improving the accuracy of the measurement data and extending the service life of the goniophotometer 100.

[0032] As a way to implement Figure 2 As shown, the goniophotometer 100 further includes a control unit 16, such as Figure 3 As shown, at least one of the vibration sensor 122, the rotating motor 12 or the counterweight driver 152 in the goniophotometer 100 is electrically connected to the control unit 16. Based on the vibration information collected by the vibration sensor 122, the control unit 16 controls the counterweight driver 152 through program calculation to drive the counterweight block 151 to move along the direction of the second straight line 102, adjust the center of gravity of the goniophotometer 100, and reduce the vibration caused by the change in the center of gravity until the vibration amount collected by the vibration sensor 122 is lower than the vibration threshold, thereby realizing automatic balancing of the goniophotometer 100.

[0033] As an optional implementation, the counterweight driver 152 can be configured as a screw driver or a cylinder driver. The counterweight driver 152 is used to drive the counterweight block 151 to move along the direction of the second straight line 102 to adjust the center of gravity of the distributed photometer 100, thereby achieving automatic balancing of the distributed photometer 100.

[0034] As an implementation, the counterweight drive 152 is configured as a lead screw drive, such as Figure 4 As shown, the screw driver includes a screw 1521, a coupling 1522 and a drive motor 1523, wherein the drive motor 1523 and the coupling 1522 are coaxially arranged, the drive motor 1523 is connected to the screw 1521 through the coupling 1522, and the counterweight block 151 is movably connected to the screw 1521.

[0035] When using the goniophotometer 100, the control unit 16 controls the drive motor 1523 based on the vibration information collected by the vibration sensor 122. The drive motor 1523 drives the coupling 1522, causing the lead screw 1521 to move axially along the coupling 1522, thereby driving the counterweight 151 to move along the second straight line 102 to adjust the center of gravity of the goniophotometer 100. As the counterweight 151 moves, the vibration caused by the change in center of gravity gradually decreases until the vibration level collected by the vibration sensor 122 falls below the vibration threshold, thereby achieving automatic balancing of the goniophotometer 100. Furthermore, limit switches 153 are provided at both ends of the lead screw driver to control the range of movement of the counterweight 151.

[0036] As an implementation, the counterweight driver 152 is configured as a cylinder driver, such as Figure 5 As shown, the cylinder driver includes a cylinder 1524 and a guide rail 1525 . The cylinder 1524 is used to drive the counterweight 151 to move, and the guide rail 1525 is used to control the moving direction of the counterweight 151 , that is, the cylinder 1524 drives the counterweight 151 to move along the guide rail 1525 .

[0037] When using the goniophotometer 100, the control unit 16 controls the cylinder driver based on the vibration information collected by the vibration sensor 122. The cylinder 1524 drives the counterweight 151 along the guide rail 1525 to adjust the center of gravity of the goniophotometer 100. As the counterweight 151 moves, the vibration caused by the change in center of gravity gradually decreases until the vibration level collected by the vibration sensor 122 falls below the vibration threshold, thereby achieving automatic balancing of the goniophotometer 100. Furthermore, limit switches 153 are located at both ends of the guide rail to control the range of movement of the counterweight 151.

[0038] As a way to implement Figure 6As shown, the testing mechanism 14 includes a lamp arm 142 and a test platform 143 connected to the lamp arm 142. The test platform 143 is used to place the target lamp under test. The lamp arm 142 of the testing mechanism 14 is connected to the first arm 131 of the rotating arm 13, and the rotating arm 13 is connected to the test platform 143 via the lamp arm 142. When using the goniophotometer 100, the lamp under test is placed on the test platform 143. The position of the testing mechanism 14 is adjusted according to the size of the lamp under test and the test requirements. The rotary motor 12 drives the rotary output shaft 121 to rotate, thereby driving the rotation of the rotating arm 13. The rotating arm 13 is connected to the test platform 143 via the lamp arm 142, which in turn drives the rotation of the test platform 143.

[0039] As an implementation method, the test mechanism 14 also includes a test motor 144, which is connected to the lamp arm 142, and the test output shaft 145 of the test motor 144 is connected to the test platform 143. The test motor 144 drives the test platform 143 to rotate, thereby adjusting the direction of the light-emitting surface of the lamp under test.

[0040] As a way to implement Figure 6 As shown, the test mechanism 14 is also provided with a displacement sensor 141 for acquiring displacement information of the test mechanism 14. Based on the displacement information acquired by the displacement sensor 141, the counterweight driver 152 controls the movement of the counterweight 151 in the direction of the second straight line 102, thereby preliminarily adjusting the center of gravity of the goniophotometer 100 and reducing the impact of large-amplitude vibrations on the goniophotometer 100. The counterweight driver 152 can also combine vibration information collected by the vibration sensor 122 to further control the movement amplitude of the counterweight 151 in the direction of the second straight line 102, thereby achieving automatic balancing of the goniophotometer 100. This two-stage adjustment method, which preliminarily adjusts the center of gravity of the goniophotometer 100 based on displacement information and further precisely adjusts the center of gravity of the goniophotometer 100 based on vibration information, improves the accuracy of the automatic balancing of the goniophotometer 100 and also extends the service life of the goniophotometer 100.

[0041] Furthermore, if Figure 7 As shown, at least one of the vibration sensor 122, the rotary motor 12, the counterweight driver 152, or the displacement sensor 141 in the goniophotometer 100 is electrically connected to the control unit 16. Based on the vibration information collected by the vibration sensor 122 and the displacement information of the test mechanism 14 obtained by the displacement sensor 141, the control unit 16 controls the counterweight driver 152 through program calculation to drive the counterweight block 151 to move along the second straight line 102, thereby adjusting the center of gravity of the goniophotometer 100 until the vibration amount collected by the vibration sensor 122 is lower than the vibration threshold, thereby achieving automatic balancing of the goniophotometer 100 and improving the accuracy of the automatic balancing of the goniophotometer 100.

[0042] According to the above description, the distributed photometer 100 provided in the present application is provided with a vibration sensor 122, a displacement sensor 141 and a counterweight mechanism 15 for adjusting the center of gravity of the distributed photometer 100. When the distributed photometer 100 is in use, the counterweight mechanism 15 automatically adjusts the center of gravity of the distributed photometer 100 based on the vibration information collected by the vibration sensor 122 and the displacement information obtained by the displacement sensor 141 until the vibration amount collected by the vibration sensor 122 is lower than the vibration threshold, thereby realizing automatic balancing of the distributed photometer 100.

[0043] Finally, it should be noted that the above are only some of the preferred implementation methods of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned implementation methods or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A goniophotometer for measuring the light distribution performance of a light source, characterized in that: include: a housing, wherein the housing forms a receiving chamber; a rotating motor disposed in the accommodating cavity, the rotating motor comprising a rotating output shaft extending along a first linear direction, the rotating output shaft extending through the housing to outside the accommodating cavity, the rotating output shaft being provided with a vibration sensor; a rotating arm extending in a direction of a second straight line perpendicular to the first straight line, the rotating arm being connected to the rotating output shaft of the rotating motor, the rotating arm comprising a first arm and a second arm respectively provided on both sides of the rotating output shaft; a testing mechanism connected to the first arm, wherein the testing mechanism is movable on the first arm along the direction of the second straight line; A counterweight mechanism is arranged in the second arm or connected to the second arm, the counterweight mechanism includes a counterweight block and a counterweight driver capable of driving the counterweight block to move along the direction of the second straight line, the counterweight driver controls the counterweight block according to the vibration information obtained by the vibration sensor, drives the counterweight block to move along the direction of the second straight line and makes it below the vibration threshold.

2. The goniophotometer according to claim 1, wherein: The counterweight driver is a screw driver or a cylinder driver.

3. The goniophotometer according to claim 2, wherein: The counterweight driver is a lead screw driver, and both ends of the lead screw driver are provided with limit switches for controlling the moving range of the counterweight block.

4. The goniophotometer according to claim 2, characterized in that The counterweight driver is a screw driver, which includes a drive motor, a coupling and a screw. The screw is connected to the drive motor through the coupling, and the coupling is coaxially arranged with the drive motor.

5. The goniophotometer according to claim 2, characterized in that The counterweight driver is a cylinder driver, which includes a guide rail for controlling the movement of the counterweight block. Limit switches for controlling the movement range of the counterweight block are provided at both ends of the guide rail.

6. The goniophotometer according to claim 1, characterized in that The goniophotometer further includes a control unit to which at least one of the vibration sensor, the rotation motor, or the counterweight driver is connected.

7. The goniophotometer according to claim 1, characterized in that The testing mechanism is further provided with a displacement sensor, and the counterweight driver obtains the displacement information of the testing mechanism from the displacement sensor and controls the counterweight block.

8. The goniophotometer according to claim 7, characterized in that The goniophotometer further includes a control unit, to which at least one of the vibration sensor, the rotation motor, the counterweight driver, or the displacement sensor is connected.

9. The goniophotometer according to claim 1, characterized in that The testing mechanism includes a lamp arm and a testing platform connected to the lamp arm.

10. The goniophotometer according to claim 9, characterized in that The testing mechanism further includes a testing motor connected to the lamp arm, and the testing platform is connected to a testing output shaft of the testing motor.

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