Galvanometer performance detection device

Abstract

The utility model discloses a galvanometer performance detection device which comprises the components of a base which is provided with a first station and a second station which is covered by a heat insulation box; the galvanometer is configured at the second station; the autocollimator is configured at the first station, and a collimated laser beam emitted by the autocollimator can pass through a detection hole formed in the heat preservation box and enter the galvanometer through the galvanometer incidence hole; the reflecting mirror is configured at the second station and is positioned right below the galvanometer emergent hole; the temperature control assembly is arranged on the heat preservation box and used for controlling the temperature in the heat preservation box; according to the utility model, the problem that the accuracy of galvanometer performance detection data is influenced because the traditional galvanometer performance detection equipment is difficult to simulate the working conditions of the galvanometer at different temperatures can be solved.

Description

Technical Field

[0001] This utility model relates to the field of galvanometers, and specifically to a galvanometer performance testing device. Background Technology

[0002] Galvanometers are important optical devices widely used in laser processing, optical communication, and precision measurement. In these applications, changes in the operating environment of galvanometers can affect the stability of their performance to a certain extent. Therefore, it is necessary to test the performance of galvanometers under high temperature, low temperature, and continuous temperature variation environments. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a galvanometer performance testing device.

[0004] To achieve the above objectives, the technical solution adopted by this utility model includes: a base having a first workstation and a second workstation, the second workstation being covered by an insulation box; a galvanometer disposed at the second workstation; an autocollimator disposed at the first workstation, wherein the collimated laser beam emitted by the autocollimator can pass through a detection hole in the insulation box and enter the galvanometer through the galvanometer's entrance hole; a reflector disposed at the second workstation and located directly below the galvanometer's exit hole; and a temperature control component disposed on the insulation box for controlling the internal temperature of the insulation box.

[0005] In the preferred embodiment of the above-mentioned galvanometer performance testing device, the temperature control component includes at least a heating unit inside the insulation box, a cooling unit on the insulation box, and a first temperature sensor for detecting the internal temperature of the insulation box.

[0006] In the preferred embodiment of the above-mentioned galvanometer performance testing device, the heating unit is a PTC heater disposed in the insulation box.

[0007] In the preferred embodiment of the above-mentioned galvanometer performance testing device, the PTC heater has several groups and surrounds the outer periphery of the galvanometer on the inner wall of the insulation box.

[0008] In the preferred embodiment of the above-mentioned galvanometer performance testing device, the cooling unit is a semiconductor refrigeration chip disposed on the top of the insulation box, and the cold end of the semiconductor refrigeration chip is connected to the inside of the insulation box through a cooling fan.

[0009] In the preferred embodiment of the above-mentioned galvanometer performance testing device, the hot end of the semiconductor cooling chip is equipped with a heat dissipation structure.

[0010] In the preferred embodiment of the above-mentioned galvanometer performance testing device, a second temperature sensor is installed on the galvanometer.

[0011] In the preferred embodiment of the above-mentioned galvanometer performance testing device, a fixed bracket is provided on the second station of the base, and the galvanometer is disposed on the fixed bracket.

[0012] In the preferred embodiment of the above-mentioned galvanometer performance testing device, the base is made of marble.

[0013] In the preferred embodiment of the above-mentioned galvanometer performance testing device, the base is disposed on a vibration damping platform.

[0014] The beneficial effect of this utility model is that by configuring the galvanometer inside the insulation box and setting up a cooling unit and a heating unit inside the insulation box, the temperature inside the insulation box can be changed by controlling the operation of the cooling unit and the heating unit, so as to simulate the working conditions of the galvanometer under different temperature conditions and improve the accuracy of the galvanometer performance test data. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention;

[0016] Figure 2 Schematic diagram of the internal structure of the autocollimator and the insulated box Figure 1 ;

[0017] Figure 3 Schematic diagram of the internal structure of the autocollimator and the insulated box Figure 2 ;

[0018] Figure 4 This is a schematic diagram of the refrigeration unit.

[0019] In the figure: base 1, insulation box 2, detection hole 21, galvanometer 3, autocollimator 4, reflector 5, first temperature sensor 61, PTC heater 62, semiconductor cooling chip 631, heat pipe radiator 632, cooling fan 633, cooling fan 634, second temperature sensor 64, fixed bracket 7, vibration damping platform 8. Detailed Implementation

[0020] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0021] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "front," and "rear," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] like Figures 1 to 4 As shown, the galvanometer 3 performance testing device of this utility model includes: a base 1, having a first station and a second station, the second station being covered by an insulation box 2; a galvanometer 3, disposed in the second station; an autocollimator 4, disposed in the first station, the collimated laser beam emitted by the autocollimator 4 being able to pass through the detection hole 21 of the insulation box 2 and enter the galvanometer 3 through the entrance hole of the galvanometer 3; a reflector 5, disposed in the second station and located directly below the exit hole of the galvanometer 3; and a temperature control component, disposed on the insulation box 2, for controlling the internal temperature of the insulation box 2.

[0024] See Figures 1 to 3 The first station of the base 1 is used to place the autocollimator 4, which can emit a collimating laser beam. The second station of the base 1 is used to place the galvanometer 3. The second station is covered with an insulation box 2, which has an insulation space. The second station is located in the insulation space of the insulation box 2. That is, the galvanometer 3 product to be tested is placed in the insulation space of the insulation box 2. The insulation box 2 has a detection hole 21 through the surface wall on the side near the first station of the base 1. The collimating laser beam emitted by the autocollimator 4 can enter the insulation box 2 through the detection hole 21.

[0025] See Figure 2 The galvanometer 3 has an entrance hole and an exit hole. The galvanometer 3 is configured on the second station of the base 1. The reflector 5 is located directly below the exit hole of the galvanometer 3 on the second station. The entrance hole of the galvanometer 3 is directly opposite the detection hole 21 of the heat preservation box 2. The temperature control component is configured on the heat preservation box 2 to control the internal temperature of the heat preservation box 2 in order to simulate the working state of the galvanometer 3 at different temperatures.

[0026] Specifically, when testing the galvanometer 3, the temperature control component is first controlled to maintain the insulation chamber 2 at high, low, or normal temperatures to simulate the actual working conditions of the galvanometer 3 under different temperature environments. Then, the galvanometer 3 is adjusted to its initial position, meaning the laser beam emitted from the galvanometer 3's exit hole can illuminate the reflector 5. Next, a collimated laser beam is emitted using the autocollimator 4. This collimated laser beam enters the galvanometer 3 through the detection hole 21 of the insulation chamber 2. The lenses inside the galvanometer 3 reflect the collimated laser beam vertically downwards to the reflector 5. The reflector 5 then reflects the collimated laser beam back into the galvanometer 3, where the lenses further collimate it. The laser beam is reflected into the autocollimator 4, which receives and records the puncture points of the returned collimated laser beam. Subsequently, the internal lens of the galvanometer 3 is controlled to swing at a predetermined angle, and the autocollimator 4 collects the puncture points of the returned collimated laser beam again. The collected data is analyzed by the data processing and analysis system to obtain the deviation between the current position and the initial position of the galvanometer 3. In addition, the temperature control component controls the temperature inside the insulation box 2 to obtain data information on the different swing angles of the galvanometer 3 lens under high temperature, low temperature or continuous temperature change conditions. It has the characteristics of wide detection range, accurate detection data and simple structure, and is practical.

[0027] In one or more embodiments, the temperature control components include at least a heating unit inside the insulation box 2 and a cooling unit on the insulation box 2, and a first temperature sensor 61 for detecting the internal temperature of the insulation box 2; the heating unit is a PTC heater 62 disposed inside the insulation box 2; the PTC heater 62 has several groups and surrounds the outer periphery of the galvanometer 3 on the inner wall of the insulation box 2; the cooling unit is a semiconductor cooling chip 631 disposed on the top of the insulation box 2, the cold end of the semiconductor cooling chip 631 is connected to the inside of the insulation box 2 through a cooling fan 634; the hot end of the semiconductor cooling chip 631 is provided with a heat dissipation structure.

[0028] See Figures 2 to 4The temperature control component includes a cooling unit, a heating unit, and a first temperature sensor 61. The cooling unit includes a thermoelectric cooler 631, the cold end of which is connected to a cooling fan 634 that connects to the insulation box 2. The cooling fan 634 can transport the cold source generated by the cold end of the thermoelectric cooler 631 to the insulation box 2. The hot end of the thermoelectric cooler 631 is equipped with a heat dissipation structure, which can be a heat pipe radiator 632 and a cooling fan 633. The heat generated by the hot end of the thermoelectric cooler 631 is dissipated to the outside through the heat pipe radiator 632, and the cooling fan 633 can further accelerate the heat dissipation efficiency of the heat pipe radiator 632. The heating unit includes multiple sets of PTC heaters 62. Several sets of PTC heaters 62 surround the periphery of the galvanometer 3 to be tested and are fixed to the inner wall of the insulation box 2 by rails. This arrangement can further accelerate the change of temperature around the galvanometer 3 and improve the temperature control efficiency of the temperature control component. The first temperature sensor 61 is a thermocouple probe used to monitor the internal temperature of the insulation box 2 in a timely manner.

[0029] In one or more embodiments, a second temperature sensor 64 is mounted on the galvanometer 3.

[0030] See Figure 2 , Figure 3 The second temperature sensor 64 is a thermocouple probe, which can monitor the temperature change of the galvanometer 3 product in a timely manner. The temperature inside the insulation box 2 is collected in real time by the first temperature sensor 61, and the temperature of the galvanometer 3 is collected in real time by the second temperature sensor 64. By collecting the temperature inside the insulation box 2 and the temperature of the galvanometer 3 in real time, the comparison information between the change in ambient temperature and the change in the performance of the galvanometer 3 product can be obtained.

[0031] In one or more embodiments, a fixed bracket 7 is disposed on the second station of the base 1, and the galvanometer 3 is disposed on the fixed bracket 7.

[0032] See Figure 2 , Figure 3 The mounting bracket 7 is made of Invar steel, which has an extremely low coefficient of thermal expansion, enabling excellent heat dissipation and ensuring the reliability of the detection data from the galvanometer 3. Furthermore, the Invar steel mounting bracket 7 has high hardness, ensuring effective fixation of the galvanometer 3. It should be noted that the collimated laser beam emitted by the autocollimator 4 can pass through the mounting bracket 7 and enter the galvanometer 3 through its entrance aperture.

[0033] In one or more embodiments, the base 1 is made of marble. It should be noted that the marble base 1 has the characteristics of low linear expansion, high stability, high hardness, high compressive strength, and high bending strength, which can provide a stable detection environment for the galvanometer 3.

[0034] In one or more embodiments, the base 1 is disposed on the vibration damping platform 8. The vibration damping platform 8 is an air-bearing pendulum vibration isolation platform, which can automatically adjust the level and dampen the base 1, further improving the stability of the galvanometer 3 during performance testing.

[0035] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A galvanometer performance testing device, characterized in that, include: The base has a first workstation and a second workstation, the second workstation being covered by an insulated box; The galvanometer is positioned at the second work station; An autocollimator is configured at the first work station. The collimated laser beam emitted by the autocollimator can pass through the detection hole of the heat preservation box and enter the galvanometer through the galvanometer entrance hole. A reflector is positioned at the second station and directly below the galvanometer exit hole; A temperature control component is configured on the insulation box to control the internal temperature of the insulation box.

2. The galvanometer performance testing device according to claim 1, characterized in that: The temperature control component includes at least a heating unit inside the insulation box and a cooling unit on the insulation box, as well as a first temperature sensor for detecting the internal temperature of the insulation box.

3. The galvanometer performance testing device according to claim 2, characterized in that: The heating unit is a PTC heater disposed inside the insulation box.

4. The galvanometer performance testing device according to claim 3, characterized in that: The PTC heater has several groups and surrounds the outer periphery of the galvanometer on the inner wall of the insulation box.

5. The galvanometer performance testing device according to claim 2, characterized in that: The refrigeration unit is a semiconductor refrigeration chip disposed on the top of the insulation box, and the cold end of the semiconductor refrigeration chip is connected to the inside of the insulation box through a cooling fan.

6. The galvanometer performance testing device according to claim 5, characterized in that: The hot end of the semiconductor cooling chip is equipped with a heat dissipation structure.

7. The galvanometer performance testing device according to claim 1, characterized in that: A second temperature sensor is installed on the galvanometer.

8. The galvanometer performance testing device according to claim 1, characterized in that: A fixed bracket is provided on the second station of the base, and the galvanometer is mounted on the fixed bracket.

9. The galvanometer performance testing device according to claim 1, characterized in that: The base is made of marble.

10. The galvanometer performance testing device according to claim 1 or 9, characterized in that: The base is mounted on a shock-absorbing platform.

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