Constant temperature testing device for TOF distance measurement
By designing a constant temperature test device for TOF ranging, the thermal conductivity module and the constant temperature heating module are used to quickly preheat the TOF ranging module, which solves the problem of slow module warm-up, significantly improves work efficiency and reduces the defective rate.
Patent Information
- Application Number
- CN202323420814.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-14
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2033-12-14
AI Technical Summary
The TOF ranging module is preheated slowly during final inspection, resulting in low working efficiency and increased defect rate.
A constant temperature test device for TOF distance measurement is designed, including a module fixing module, a thermal conductive module, a constant temperature heating module, an adapter plate and a double-layer aluminum foil thermal insulation sticker. The heat conduction module absorbs the heat generated by the constant temperature heating module and quickly introduces the heat into the TOF ranging module to keep the module at the set temperature.
The TOF ranging module heating time is significantly shortened from the original 20 seconds to about 5 seconds, which improves factory efficiency and reduces the defective rate.
Smart Images
Figure CN222379894U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of TOF sensor testing, and in particular to a constant temperature testing device for TOF ranging. Background Art
[0002] The results of the TOF ranging module currently used by the company are greatly affected by temperature during ranging. To ensure the accuracy of the ranging results, after the ranging station completes the ranging, it is necessary to perform heating ranging (i.e. changing the temperature for ranging) during the final inspection process to ensure that accurate ranging results can be obtained at different temperatures. To achieve this goal, the module temperature needs to be heated to about 50°C. However, the TOF ranging module itself has a slow preheating speed and takes a long time. It takes about 20 seconds to heat to 50°C. This situation seriously affects the production progress and increases the defect rate. Utility Model Content
[0003] The utility model aims to at least solve the technical problems in the prior art that the preheating is too slow when the TOF needs to be heated, resulting in low working efficiency and complex test device structure. To this end, the utility model proposes a constant temperature test device for TOF ranging, which can achieve practical application value.
[0004] According to an embodiment of the utility model, a constant temperature test device for TOF ranging includes: a module fixing module, which is used to fix the TOF ranging module, including: a base, which is provided with an accommodating space, and the TOF ranging module is fixed in the accommodating space; an upper cover, which is arranged above the base, and one end of which is rotatably connected to one end of the base to close the TOF ranging module in the accommodating space; a buckle, which is used to fix the upper cover on the base, and is arranged on both sides of the base; a heat conduction module, which is used to transfer heat to the module fixing module, and is fixedly arranged below the module fixing module; and a constant temperature heating module, which is used to generate heat according to a set temperature, and is arranged on one side of the heat conduction module, and is connected to the heat conduction module; wherein the heat conduction module absorbs the heat generated by the constant temperature heating module to maintain the module fixing module at the set temperature.
[0005] Preferably, the buckle is in the shape of a capital letter I, and the base is provided with an inverted T-shaped groove corresponding to the buckle. The upper end of the buckle extends out of the groove, and the lower end of the buckle can slide in the groove toward the upper cover. When the buckle slides to the innermost side of the groove, its upper end extending out of the groove locks the upper cover on the base.
[0006] Preferably, the module fixing module further includes limiting screws, which are arranged on both sides of the base and close to the bottom of the groove, and are used to limit the buckle from sliding out in a direction away from the upper cover.
[0007] Preferably, the heat conducting module is a heat conducting metal, the constant temperature heating module is a constant temperature heating plate, the constant temperature heating plate is arranged on one side of the heat conducting metal, and the constant temperature heating plate can generate heat after being powered on.
[0008] Preferably, the constant temperature heating plate is fixed on the heat conductive metal by fixing screws.
[0009] Preferably, a heat insulation sticker is provided on the back of the constant temperature heating plate.
[0010] Preferably, the constant temperature testing device further comprises an adapter plate, which is used for power supply, and the constant temperature heating plate is connected to the adapter plate via a wire.
[0011] Preferably, the constant temperature testing device further comprises a double-layer aluminum foil heat insulation paste, which is arranged between the heat-conducting metal and the adapter plate.
[0012] Preferably, the upper cover is provided with a through hole so that the transmitter and the sensor of the TOF ranging module are exposed in the space.
[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0015] Figure 1 is a schematic diagram of the structure of the constant temperature testing device in this embodiment;
[0016] Figure 2 is another structural schematic diagram of the constant temperature testing device in this embodiment.
[0017] Description of reference numerals: module fixing module 10 base 11 upper cover 12 buckle 13 limit screw 14 heat conduction module 20 constant temperature heating module 30 adapter plate 40 double-layer aluminum foil heat insulation sticker 50 DETAILED DESCRIPTION
[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0019] In the description of the present invention, it should be understood that the directions or positional relationships indicated by the description of directions, such as up, down, front, back, left, right, etc., are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0020] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0021] See also Figure 1 to Figure 2 The present application proposes a constant temperature test device for TOF ranging, including: a module fixing module 10, a heat conduction module 20, a constant temperature heating module 30, an adapter plate 40 and a double-layer aluminum foil heat insulation sticker 50.
[0022] A module fixing module 10 is used to fix the TOF ranging module; a heat conducting module 20 is used to transfer heat to the module fixing module 10 and is fixedly arranged below the module fixing module 10; and a constant temperature heating module 30 is used to generate heat according to a set temperature and is arranged on one side of the heat conducting module 20 and is connected to the heat conducting module 20; wherein the heat conducting module 20 absorbs the heat generated by the constant temperature heating module 30 to maintain the module fixing module 10 at the set temperature.
[0023] The module fixing module 10 includes: a base 11, which is provided with a containing space, and the TOF ranging module is fixed in the containing space; an upper cover 12, which is arranged above the base 11, and one end of which is rotatably connected to one end of the base 11 to close the TOF ranging module in the containing space; a buckle 13, which is used to fix the upper cover 12 on the base 11, and is arranged on both sides of the base 11.
[0024] In this embodiment, a through hole is provided on the base 11, and an insertion hole is provided at one end of the upper cover 12. The upper cover 12 is inserted into the insertion hole after passing through the through hole via a rotating column, so that the upper cover 12 can be rotatably connected to the base 11.
[0025] In this embodiment, the buckle 13 is in the shape of a capital letter I, and the base 11 is provided with an inverted T-shaped groove corresponding to the buckle 13. The upper end of the buckle 13 extends out of the groove, and the lower end of the buckle 13 can slide in the groove toward the upper cover 12. When the buckle 13 slides to the innermost side of the groove, its upper end extending out of the groove locks the upper cover 12 on the base 11.
[0026] In this embodiment, the upper cover 12 is provided with a through hole so that the emitter and the sensor of the TOF distance measurement module are exposed, so that the emitter can emit light and the sensor can receive light.
[0027] The module fixing module 10 further includes limiting screws 14 , which are disposed on both sides of the base 11 and close to the bottom of the groove, and are used to limit the buckle 13 from sliding out in a direction away from the upper cover 12 .
[0028] In this embodiment, a nut is provided on the head of the limiting screw 14, which is used to limit the lower end of the buckle 13 from sliding out of the groove.
[0029] In this embodiment, the heat conduction module 20 is a heat conduction metal, and the constant temperature heating module 30 is a constant temperature heating plate. The constant temperature heating plate is arranged on one side of the heat conduction metal, and the constant temperature heating plate can generate heat after being powered on.
[0030] In this embodiment, a plug hole is provided on the heat-conducting metal, and the constant temperature heating plate is inserted into the plug hole and fixed on the heat-conducting metal by fixing screws.
[0031] In this embodiment, the constant temperature heating module 30 uses a constant temperature heating plate with specifications of 5V input voltage, 50° constant temperature, and 2-3W power.
[0032] The back of the constant temperature heating plate is provided with a heat insulation sticker. In this embodiment, the heat insulation sticker is a 3M heat insulation sticker, which can prevent hands from being burned by accidentally touching the constant temperature heating plate.
[0033] The adapter plate 40 is connected to a power source and is used to supply power to the constant temperature heating plate. The constant temperature heating plate is connected to the adapter plate 40 via a wire.
[0034] The double-layer aluminum foil heat insulation sticker 50 is disposed between the heat-conducting metal and the adapter plate 40. In this embodiment, the double-layer aluminum foil heat insulation sticker 50 is added to the bottom of the heat-conducting metal to prevent the adapter plate 40 from being damaged due to overheating of the heat-conducting metal.
[0035] Combine the following Figure 1 and Figure 2 Here we will explain the working principle of this application.
[0036] The adapter board 40 outputs a stable 5V voltage, the positive and negative electrodes of the heating plate are connected to the adapter board 40, and it is fixed to the heat-conducting metal with fixing screws. A double-layer aluminum foil heat-insulating sticker 50 needs to be installed at the bottom of the heat-conducting metal to prevent the adapter board 40 from being overheated and damaged by the heat of the heat-conducting metal. At the same time, a 3M heat-insulating sticker needs to be attached to the back of the heating plate to prevent the user from being injured by direct contact with the heating plate.
[0037] After power is turned on, the heating plate is preheated for a few minutes, and the temperature of the thermal conductive metal is stabilized at about 50°C. At this time, put the TOF ranging module into the base 11, cover the upper cover 12, push the buckles 13 on both sides of the upper cover 12 to the innermost side of the groove, and fix the upper cover 12 on the base 11. The heat of the constant temperature heating plate is transferred to the TOF ranging module through the thermal conductive metal, and the double-layer aluminum foil thermal insulation sticker 50 at the bottom of the thermal conductive metal ensures that the adapter plate 40 below is not affected. At the same time, the 3M thermal insulation sticker on the back of the heating plate can also effectively prevent users from scalding their fingers.
[0038] The technical solution of this application has the following technical effects:
[0039] 1. It makes up for the slow preheating problem of the TOF ranging module during final inspection. By stabilizing the temperature of the heat-conducting metal at around 50°C, heat can be quickly introduced into the TOF ranging module. Compared with the previous heating time of about 20 seconds for each module, the time is shortened to about 5 seconds after adopting this technology, which significantly improves factory efficiency and reduces the defect rate.
[0040] 2. This structural design has broad application prospects and can be extended to many other products. Its simple structure and convenient installation characteristics effectively reduce the labor costs of mold opening and assembly, while greatly improving production efficiency, fully meeting the needs of R&D and production.
[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0042] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A constant temperature test device for TOF ranging, characterized in that: include: The module fixing module is used to fix the TOF ranging module, including: A base, which is provided with a containing space, in which the TOF ranging module is fixed; an upper cover, which is arranged above the base, and one end of which is rotatably connected to one end of the base to close the TOF ranging module in the containing space; a buckle, which is used to fix the upper cover on the base, and is arranged on both sides of the base; a heat conduction module, which is used to transfer heat to the module fixing module and is fixedly disposed below the module fixing module; and A constant temperature heating module, which is used to generate heat according to a set temperature, and is arranged on one side of the heat conduction module and connected to the heat conduction module; The heat conduction module absorbs the heat generated by the constant temperature heating module to maintain the module fixing module at a set temperature.
2. The constant temperature testing device according to claim 1, characterized in that: The buckle is in the shape of a capital letter I, and the base is provided with an inverted T-shaped groove corresponding to the buckle. The upper end of the buckle extends out of the groove, and the lower end of the buckle can slide in the groove toward the upper cover. When the buckle slides to the innermost side of the groove, the upper end thereof extends out of the groove to lock the upper cover on the base.
3. The constant temperature testing device according to claim 2, characterized in that: The module fixing module also includes limiting screws, which are arranged on both sides of the base and close to the bottom of the groove, and are used to limit the buckle from sliding out in a direction away from the upper cover.
4. The constant temperature testing device according to claim 1, characterized in that: The heat conduction module is a heat conduction metal, the constant temperature heating module is a constant temperature heating plate, the constant temperature heating plate is arranged on one side of the heat conduction metal, and the constant temperature heating plate can generate heat after being powered on.
5. The constant temperature testing device according to claim 4, characterized in that: The constant temperature heating plate is fixed on the heat conductive metal by fixing screws.
6. The constant temperature testing device according to claim 5, characterized in that: The back of the constant temperature heating plate is provided with a heat insulation sticker.
7. The constant temperature testing device according to claim 5, characterized in that: The constant temperature testing device also includes an adapter plate, which is used for power supply, and the constant temperature heating plate is connected to the adapter plate via a wire.
8. The constant temperature testing device according to claim 7, characterized in that: The constant temperature testing device also includes a double-layer aluminum foil heat insulation paste, which is arranged between the heat-conducting metal and the adapter plate.
9. The constant temperature testing device according to claim 1, characterized in that: The upper cover is provided with a through hole so that the transmitter and the sensor of the TOF ranging module are exposed in the space.