Resistance testing device for image signal generator

Abstract

The utility model discloses a resistance testing device for an image signal generator, which belongs to the technical field of photoelectric detection and comprises a resistance module and a wiring module. A plurality of resistors are divided into a plurality of resistor modules, and the number of the resistors in each resistor module can be flexibly set according to needs, so that the applicability of the resistance testing device is improved; the resistor module is connected with the interface channel of the to-be-tested image signal generator through the wiring module, so that remote connection between the resistor module and the to-be-tested piece is realized, the load of the resistor module on the image signal generator during testing is reduced, and the number of resistors in the resistor testing device is not limited by the loadable range of the to-be-tested piece; and a PCB is not needed for switching, so that the testable range of the resistance testing device is expanded, and the cost is effectively reduced. The resistance testing device for the image signal generator is simple in structure, convenient to disassemble and replace the resistors, and capable of meeting the requirements of the resistors with different power and meeting the requirement of internal heat dissipation of the device.

Description

Technical Field

[0001] This utility model belongs to the field of photoelectric detection technology, specifically relating to a resistance testing device for an image signal generator. Background Technology

[0002] With the rapid development of display technology, medium-sized OLED panels are increasingly widely used in consumer electronics, automotive displays, industrial control, and other fields. Because OLED panels gradually age during use, their performance parameters (such as brightness, color, and response speed) will change. Therefore, CELLPG equipment with higher voltage, higher current, and higher slew rate signals is required for testing.

[0003] As the resolution and size of OLED panels continue to increase, the electronic components inside CELL PG equipment are developing towards higher power and higher density, and the number of signal channels is also increasing. This leads to a significant increase in crosstalk between channels. If the full-load data between channels cannot be accurately measured, the test results will be inaccurate, which will affect the working performance of the OLED panel and reduce the reliability and stability of the system.

[0004] When conducting full-load tests between channels, current needs to be shunted through resistors. Generally, load resistors on the PCB board are plugged into the PG device. However, as the number of signal channels increases, the number of load resistors required will increase accordingly, significantly increasing the size and weight of the test device, exceeding the load range of the PCB board. Moreover, the number of load resistors on the PCB board is constant, which cannot meet the needs of different power resistors, causing inconvenience to the user and reducing test efficiency. Utility Model Content

[0005] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a resistance testing device for an image signal generator, which can separate the resistor from the device under test during testing, reduce the load on the device under test, and flexibly change the resistance power as needed, thereby improving the versatility of the device.

[0006] To achieve the above objectives, this utility model provides a resistance testing device for an image signal generator, which includes multiple resistors and a wiring module;

[0007] The resistor has lead terminals at both ends, and the multiple resistors can be divided into multiple resistor modules, each resistor module including at least one resistor.

[0008] One end of the wiring module has a lead corresponding to the interface channel of the image signal generator under test, and the other end is a connector that is electrically connected to the lead and can be plugged into the interface of the image signal generator under test.

[0009] Each interface channel of the image signal generator has a lead consisting of an input lead and an output lead for electrical connection to a two-lead connector of a resistor module.

[0010] As a further improvement of this utility model, the resistor module is provided with a plurality of resistors, which are connected in parallel or in series.

[0011] As a further improvement of this utility model, it also includes a heat dissipation module; the heat dissipation module includes a heat sink or a TEC heat sink, and a plurality of the resistors are disposed on the heat sink or the TEC heat sink.

[0012] As a further improvement of this utility model, the heat dissipation module includes a plurality of spaced heat sinks, a plurality of resistors are evenly distributed on the plurality of heat sinks, and the resistors are detachably connected to the heat sinks.

[0013] As a further improvement of this utility model, the heat sink is arranged perpendicular to the bracket, and the plurality of resistors on the heat sink are staggered and distributed on both sides of the heat sink.

[0014] As a further improvement of this utility model, the heat dissipation module also includes multiple fans, which are arranged on the same side of the multiple heat sinks, and each fan is arranged in a spaced channel corresponding to two adjacent heat sinks; the fans are powered by a power supply, and the multiple fans are arranged in parallel.

[0015] As a further improvement of this utility model, the input lead and the output lead are electrically connected to the lead connector via alligator clips.

[0016] As a further improvement of this utility model, the wiring module also includes a terminal block, wherein each contact at the bottom of the terminal block is electrically connected to the lead connectors at both ends of the plurality of resistors; the top of the terminal block can be connected to the corresponding lead after being connected in series or in parallel with wires.

[0017] As a further improvement of this utility model, it also includes a housing, in which the resistor module and the heat dissipation module are detachably disposed; the housing has an opening on the side opposite to the fan, and one end of the wiring module is connected to the resistor module from the opening.

[0018] As a further improvement of this utility model, the heat sink is provided with 2-8 units, and ten resistors are respectively arranged on both sides of each heat sink.

[0019] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0020] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:

[0021] (1) The resistance testing device for image signal generator of this utility model divides multiple resistors into multiple resistance modules. The number of resistors in each resistance module can be flexibly set as needed, which improves the applicability of the resistance testing device. Then, the resistance module is connected to the interface channel of the image signal generator under test through the wiring module, realizing the long-distance connection between the resistance module and the device under test. This reduces the load of the resistance module on the image signal generator during the test, so that the number of resistors in the resistance testing device is not limited by the load range of the device under test, and no PCB board is required for conversion. This improves the testable range of the resistance testing device and effectively reduces the cost.

[0022] (2) The resistance testing device for image signal generator of this utility model dissipates heat from the resistance module through the heat dissipation module to meet the heat dissipation requirements of the resistor; by having the fan facing the heat sink through the spaced channel, and the box body opening away from the fan, a heat dissipation method of rear air intake and front air exhaust is formed, which facilitates the rapid outflow of hot air inside the box body.

[0023] (3) The resistance testing device for image signal generator of this utility model detachably sets the resistance module and the heat dissipation module in the box to facilitate the disassembly and assembly of the resistance module. At the same time, ventilation space is formed on both the upper and lower sides to facilitate heat dissipation inside the device. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the resistance testing device for an image signal generator in an embodiment of this utility model;

[0026] Figure 2 This is an exploded view of the resistance testing device for an image signal generator in an embodiment of this utility model;

[0027] Figure 3 This is a partial structural schematic diagram of the resistance testing device for an image signal generator in an embodiment of this utility model.

[0028] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1, housing; 11, base plate; 12, baffle; 13, cover plate; 2, resistor; 201, lead connector; 3, bracket; 31, support plate; 32, support base; 4, heat sink; 5, fan; 6, power supply. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] In the description of this utility model, it should be understood that, unless otherwise explicitly specified and limited, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to 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.

[0031] Furthermore, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] Example:

[0035] Please see Figures 1-3 The resistance testing device for an image signal generator in a preferred embodiment of this utility model includes a housing 1, a plurality of resistors 2 disposed in the housing 1, a heat dissipation module and a wiring module (not shown in the figure), so as to connect the resistors 2 to the image signal generator under test through the wiring module and to dissipate heat from the resistors through the heat dissipation module.

[0036] Specifically, such as Figure 1 and Figure 2 As shown, in the preferred embodiment, the box body 1 includes a bottom plate 11, a baffle 12, and a cover plate 13; wherein the bottom plate 11 and the cover plate 13 are arranged vertically at intervals, and there are two baffles 12, which are respectively arranged on the horizontal sides of the bottom plate 11, and the upper and lower ends of the baffles 12 are fixedly connected to the bottom plate 11 and the cover plate 13 respectively.

[0037] In actual setup, the two baffles 12 and the base plate 11 can be integrated, and the cover plate 13 is detachably connected to the two baffles 12 so that the cover plate 13 can be removed when installing or removing the resistor 2 for easy operation.

[0038] Furthermore, in the preferred embodiment, the resistor 2 is a cement resistor, and lead connectors 201 are respectively provided at both ends of the resistor 2 for wiring connection of the resistor 2. The wiring connection can be a wiring connection between resistors 2 or a wiring connection between resistor 2 and wiring module.

[0039] Meanwhile, multiple resistors 2 can be divided into multiple resistor modules, each resistor module including at least one resistor 2. The number of resistors 2 in each resistor module is set according to the test requirements. When there are multiple resistors 2 in a resistor module, the multiple resistors 2 can be connected in parallel or in series. In actual use, adjacent resistors 2 in the resistor module can be connected head-to-head or tail-to-tail by welding wire to realize parallel connection between resistors 2, and adjacent resistors 2 can be connected head-to-tail by welding wire to realize series connection between resistors 2.

[0040] Furthermore, such as Figure 2As shown, the heat dissipation module includes a heat sink 4 and a fan 5. The heat sink 4 is detachably connected and disposed inside the housing 1, and the resistor module is detachably connected and disposed on the heat sink 4 so that the resistor 2 can be cooled by the heat sink 4 during the resistance test.

[0041] In actual setup, all resistors 2 can be placed on the same heat sink 4, or multiple heat sinks 4 can be placed at intervals inside the housing 1, and the multiple resistors 2 can be evenly distributed on each heat sink 4.

[0042] Preferably, the multiple resistors 2 on each heat sink 4 are staggered and distributed on both sides of the top of the heat sink 4 to facilitate heat dissipation of the resistors 2.

[0043] Preferably, 2 to 8 heat sinks 4 are arranged at intervals inside the housing 1, and ten resistors 2 are arranged at intervals on both sides of each heat sink 4.

[0044] Preferably, the heat sink 4 is detachably connected to the housing 1 via the bracket 3, and the heat sink 4 is positioned perpendicular to the bracket 3 to facilitate the assembly and disassembly of the resistor module. In actual installation, a separate bracket 3 can be provided for each heat sink 4, or multiple heat sinks 4 can share one bracket 3, such as... Figure 3 As shown, multiple heat sinks 4 are mounted on a bracket 3.

[0045] Specifically, such as Figure 3 As shown, the bracket 3 includes a support plate 31 and a support base 32. The support plate 31 is spaced between the base plate 11 and the cover plate 13 to form air ducts above and below the support plate 31, which facilitates ventilation and heat dissipation of the resistor 2. There are two support bases 32, which are spaced between the two ends or the bottom of the support plate 31. One end of the support base 32 is fixedly connected to the support plate 31, and the other end is detachably fixedly connected to the base plate 11 to form a "U"-shaped or "Π"-shaped bracket 3.

[0046] In another specific embodiment of the present invention, the bracket 3 includes a support plate 31 and a support base 32. The support plate 31 is spaced between the base plate 11 and the cover plate 13. The support base 32 is located below the middle part of the support plate 31, with one end fixedly connected to the support plate 31 and the other end detachably fixedly connected to the base plate 11.

[0047] In another specific embodiment of the present invention, the bracket 3 includes a support plate 31, which is spaced between the base plate 11 and the cover plate 13, and the two lateral ends of the support plate 31 are respectively detachably and fixedly connected to the baffle 12 on the corresponding side.

[0048] Accordingly, at least one fan 5 is also provided in the housing 1. The fan 5 corresponds to the resistor module located at one end of the heat sink 4. At the same time, the fan 5 is connected to the power supply 6 so that the power supply 6 can supply power to the fan 5 and further dissipate heat from the resistor 2 and the heat sink 4 through the fan 5.

[0049] Preferably, multiple fans 5 are provided inside the housing 1, and the multiple fans 5 are arranged in parallel to each other, which makes the internal wiring of the housing 1 simpler. Furthermore, it is preferable that each fan 5 is arranged in a spaced channel corresponding to two adjacent heat sinks 4 to accelerate the airflow in the channel.

[0050] Preferably, the side of the housing 1 facing away from the fan 5 is opened to form a rear-intake, front-exhaust ventilation pattern, which facilitates better ventilation and meets the heat dissipation requirements of the housing 1. At the same time, the wiring module is connected to the resistor module from this opening, so that all the wiring of the whole machine is output on one side, making the wiring of the whole machine more convenient and better meeting the testing conditions.

[0051] Furthermore, one end of the wiring module has a lead corresponding to the interface channel of the image signal generator under test, and the other end is a connector that is electrically connected to the lead and can be plugged into the interface of the image signal generator under test.

[0052] Understandably, the image signal generator under test has multiple interface channels, each corresponding to multiple sets of leads. These leads are simultaneously connected to the connector, and then plugged into the interface of the image signal generator under test through the connector. This achieves electrical connection between multiple interface channels and multiple leads, allowing for simultaneous testing of multiple interface channels.

[0053] Accordingly, each interface channel of the image signal generator under test includes an input lead and an output lead for electrical connection to a two-lead connector 201 of a resistor module.

[0054] It is understandable that when there is only one resistor 2 in the resistor module, the input lead and the output lead can be connected to the lead connectors 201 at both ends of the resistor 2 through alligator clips; when there are multiple series or parallel resistors 2 in the resistor module, the input lead and the output lead can be connected to the resistors 2 set at both ends of the resistor module through alligator clips.

[0055] Preferably, the wiring module further includes a terminal block, the bottom contacts of which are electrically connected one-to-one with the lead connectors 201 at both ends of the plurality of resistors 2, so as to transfer the electrical connection points of each resistor to the terminal block; at the same time, the top of the terminal block can be connected in series or in parallel with wires, thereby realizing the series or parallel connection between each resistor 2 in the resistor module, and then the top of the terminal block is connected to the corresponding lead wire to realize the electrical connection between the resistor module and the interface channel.

[0056] It is understandable that when connecting the resistor module and the lead wire, as well as connecting resistors 2 in series and parallel, it is not necessary to disassemble the box 1 before directly wiring the resistors 2. Electrical connection can be performed directly on the terminal block outside the box 1 corresponding to the contacts of each resistor 2, which effectively improves wiring efficiency.

[0057] In actual installation, all resistors 2 can be grouped into multiple resistor modules according to the required power. Then, the resistors 2 are fixed on the heat sink 4 respectively, and the resistors 2 in each group are connected in parallel by welding wire. The heat sink 4 with the resistors 2 installed is installed on the bracket 3, and the bracket 3 is then assembled into the box 1. Multiple fans 5 are fixed to the box 1 with screws, and the power supply 6 is fixed inside the box 1. Finally, the cover plate 13 is installed to complete the installation of the resistance testing device.

[0058] In actual installation, all cement resistors 2 can be fixed to the corresponding heat sinks 4 with screws. Then, the heat sinks 4 with cement resistors 2 installed can be installed onto the brackets 3 with screws. The brackets 3 can be installed into the housing 1 with screws. Multiple fans 5 can be fixed into the housing 1 with screws. At the same time, the power supply 6 can be fixed into the housing 1. Finally, the cover plate 13 can be installed to complete the installation of the resistance testing device.

[0059] In actual use, open the cover plate 13 and divide all the cement resistors 2 into multiple resistor modules according to the required resistance power. When there are multiple resistors 2 in a resistor module, first connect the multiple resistors 2 in each group in series and parallel through welding wires, or connect the contacts on the terminal blocks corresponding to the multiple resistors 2 in series and parallel. Then connect the leads corresponding to the multiple resistor modules to the connector and plug the connector into the interface of the image signal generator under test to complete the electrical connection between the resistor module and the interface channel.

[0060] The resistance testing device for image signal generators in this invention has a simple structure, is easy to disassemble and replace resistors, can meet the needs of resistors with different power ratings, and can meet the internal heat dissipation needs of the device. It has good application prospects and promotion value.

[0061] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A resistance testing device for an image signal generator, characterized in that, Includes multiple resistors and wiring modules; The resistor has lead terminals at both ends, and the multiple resistors can be divided into multiple resistor modules, each resistor module including at least one resistor. One end of the wiring module has a lead corresponding to the interface channel of the image signal generator under test, and the other end is a connector that is electrically connected to the lead and can be plugged into the interface of the image signal generator under test. Each interface channel of the image signal generator has a lead consisting of an input lead and an output lead for electrical connection to a two-lead connector of a resistor module.

2. The resistance testing device for an image signal generator according to claim 1, characterized in that, The resistor module contains multiple resistors, which are connected in parallel or in series.

3. The resistance testing device for an image signal generator according to claim 1, characterized in that, It also includes a heat dissipation module; the heat dissipation module includes a heat sink or a TEC heat sink, and a plurality of the resistors are disposed on the heat sink or the TEC heat sink.

4. The resistance testing device for an image signal generator according to claim 3, characterized in that, The heat dissipation module includes multiple spaced heat sinks, and multiple resistors are evenly distributed on the multiple heat sinks, and the resistors are detachably connected to the heat sinks.

5. The resistance testing apparatus for an image signal generator according to claim 4, characterized in that, The heat sink is arranged perpendicular to the bracket, and the multiple resistors on the heat sink are staggered and distributed on both sides of the heat sink.

6. The resistance testing apparatus for an image signal generator according to claim 4 or 5, characterized in that, The heat dissipation module also includes multiple fans, which are arranged on the same side of the multiple heat sinks, and each fan is arranged in a spaced channel corresponding to two adjacent heat sinks; the fans are powered by a power supply, and the multiple fans are arranged in parallel.

7. The resistance testing apparatus for an image signal generator according to claim 1, characterized in that, The input lead and the output lead are electrically connected to the lead connector via alligator clips.

8. The resistance testing apparatus for an image signal generator according to claim 1, characterized in that, The wiring module also includes a terminal block, with each contact at the bottom of the terminal block being electrically connected to a lead connector at each end of a plurality of resistors; the top of the terminal block can be connected to the corresponding lead after being connected in series or parallel with wires.

9. The resistance testing apparatus for an image signal generator according to claim 6, characterized in that, It also includes a housing, in which the resistor module and the heat dissipation module are detachably disposed; the housing has an opening on the side opposite to the fan, and one end of the wiring module is connected to the resistor module from the opening.

10. The resistance testing apparatus for an image signal generator according to claim 4, characterized in that, The heat sink is provided with 2 to 8 units, and ten resistors are arranged at intervals on both sides of each heat sink.

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