CN108709654B - Temperature testing device - Google Patents
Temperature testing device Download PDFInfo
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- CN108709654B CN108709654B CN201810840798.9A CN201810840798A CN108709654B CN 108709654 B CN108709654 B CN 108709654B CN 201810840798 A CN201810840798 A CN 201810840798A CN 108709654 B CN108709654 B CN 108709654B
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/22—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element being a thermocouple
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a temperature testing device, which is used for detecting the temperature of an optical module, and comprises: the test box is provided with a containing cavity, and the containing cavity is provided with an air inlet and an air outlet; the test control assembly is at least partially accommodated in the accommodating cavity and is electrically connected with the optical module; and the cold and hot impact assembly is characterized in that the impact head of the cold and hot impact assembly is fixed on the test box and is communicated with the air inlet. The technical scheme of the invention aims to complete the conversion of the temperature to be detected of the optical module in a short time, shorten the test time of the optical module, improve the test efficiency and facilitate the use of users.
Description
Technical Field
The invention relates to the technical field of optical detection, in particular to a temperature testing device.
Background
The photoelectric performance test of the optical module is generally performed by dividing the optical module into three times according to high temperature, low temperature and normal temperature, and the optical module to be tested is mainly placed in a constant temperature box with controllable temperature for performing the photoelectric performance test or in a cold and hot impact box at present. Therefore, the optical module needs to be taken out and put into test boxes with different temperatures for measurement every time when the optical module is measured, but the temperature test time of the optical module needs to be shortened along with the production yield improvement requirement, and the temperature rise and the temperature reduction rate of the test boxes are improved so as to ensure that the test is completed in a short time. The existing optical module test box cannot finish the change of the required test temperature of the optical module in a short time, so that the test time of the optical module is long, the test efficiency is low, and the use of a user is inconvenient.
Disclosure of Invention
The invention mainly aims to provide a temperature testing device which aims to complete the conversion of the temperature required to be detected by an optical module in a short time, shorten the testing time of the optical module, improve the testing efficiency and facilitate the use of users.
In order to achieve the above object, the present invention provides a temperature testing device for detecting a temperature of an optical module, the temperature testing device comprising:
the test box is provided with a containing cavity, and the containing cavity is provided with an air inlet and an air outlet;
the test control assembly is at least partially accommodated in the accommodating cavity and is electrically connected with the optical module; and
and the cold and hot impact assembly comprises an impact head, and the impact head is fixed on the test box and is communicated with the air inlet.
Optionally, the cold and hot impact assembly comprises a compressor and a gas pipe, one end of the gas pipe is communicated with the compressor, the other end of the gas pipe is communicated with the impact head, the gas pipe is provided with a first air inlet channel, the impact head is provided with a first air outlet channel and a second air inlet channel positioned in the first air outlet channel, and the second air inlet channel is communicated with the first air inlet channel and the air inlet.
Optionally, the temperature testing device further comprises a joint plate, wherein the joint plate is arranged around the impact head and is used for sealing and connecting the joint of the impact head and the testing box.
Optionally, the temperature testing device further comprises an exhaust pipe and a muffler, the exhaust pipe is fixedly connected with the impact head, the muffler is fixed on the end part of the exhaust pipe, which is away from the impact head, a second air outlet channel is formed in the exhaust pipe, and the second air outlet channel is communicated with the first air outlet channel.
Optionally, the test control assembly comprises:
the test board is accommodated in the accommodating cavity and is provided with a plug interface for connecting with the optical module;
the temperature measuring piece is used for testing the temperature of the optical module and is accommodated in the accommodating cavity; and
and the test board and the temperature measuring piece are electrically connected with the controller.
Optionally, the temperature measuring member includes:
the fixed bracket is accommodated in the accommodating cavity and is fixedly connected with the test box;
the driving part is used for driving the thermocouple to move close to or far away from the plug interface, and is fixedly connected with the fixed support; and
the thermocouple is movably connected with the fixed support and used for testing the temperature of the optical module, the driving part drives the thermocouple to move close to or far away from the plug interface, and the thermocouple is electrically connected with the controller.
Optionally, the temperature testing device further includes a connection cable, the testing box is further formed with a wire through hole, the connection cable passes through the wire through hole piece to electrically connect the testing board and the controller, and signals of the testing board are timely transmitted to an external testing instrument;
the temperature testing device further comprises a waterproof connector which is sleeved on the wire passing hole and seals the joint of the connecting cable and the wire passing hole.
Optionally, the driving part includes:
the avoidance cylinder is fixedly connected with the fixed bracket;
the first rod body is fixedly connected with the avoidance cylinder and is in cylindrical arrangement,
the second rod body is sleeved in the first rod body in a telescopic manner, and the end part, deviating from the first rod body, of the second rod body is fixedly connected with the thermocouple; and
the elastic piece is accommodated in the first rod body, one end of the elastic piece is fixedly connected with the first rod body, and the other end of the elastic piece is fixedly connected with the second rod body.
Optionally, the test box includes a bottom plate, a plurality of side plates extending from the bottom plate, and a top plate connected to the side plates, where the bottom plate, the side plates, and the top plate enclose together to form the accommodating cavity;
the impact head is fixedly connected with the top plate, and the air outlet is formed in the bottom plate.
Optionally, the temperature testing device further comprises a silencing sponge, wherein the silencing sponge is arranged on the bottom plate and is positioned in the accommodating cavity;
and/or the silencing sponge is arranged on the side plate and positioned in the accommodating cavity.
According to the technical scheme, the test box with the accommodating cavity is arranged, the part of the test control assembly is accommodated in the accommodating cavity, the gas pipe of the cold and hot impact assembly is communicated with the air inlet, and the optical module is electrically connected with the test control assembly, so that the optical module works normally. When the temperature of the optical module is required to be detected higher, the air outlet temperature of the compressor is adjusted to enable the air delivery pipe to deliver high-temperature air to the accommodating cavity from the air inlet, and low-temperature air in the accommodating cavity flows out from the air outlet, so that the air temperature in the accommodating cavity is rapidly increased and kept within a certain temperature range, and therefore the optical module conducts heat with the air in the accommodating cavity, and the temperature is increased. The test control component tests the current temperature and detects the working state of the optical module at the temperature, thereby completing the test of the optical module at high temperature. When the temperature of the optical module is required to be detected to be low, the air outlet temperature of the compressor is adjusted to enable the air delivery pipe to deliver low-temperature air to the accommodating cavity from the air inlet, and high-temperature air in the accommodating cavity flows out from the air outlet, so that the air temperature in the accommodating cavity is rapidly reduced and kept within a certain temperature range, and therefore the optical module conducts heat with the air in the accommodating cavity, and the temperature is reduced. The test control component tests the current temperature and detects the working state of the optical module at the temperature, thereby completing the test of the optical module at low temperature. Due to the adoption of the cold and hot impact assembly, the temperature in the accommodating cavity can be rapidly switched, and the cold and hot test can be performed in the same test box without replacing the test box. Therefore, the technical scheme of the invention can finish the transformation of the temperature required to be detected by the optical module in a short time, shortens the test time of the optical module, improves the test efficiency and is convenient for users to use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a temperature testing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of an embodiment of the temperature testing device of the present invention;
FIG. 3 is a schematic view of an embodiment of an internal air flow cycle of the temperature testing apparatus of the present invention;
FIG. 4 is a schematic view, partially in section, of an embodiment of a temperature testing device of the present invention;
FIG. 5 is a schematic view of an impact head of a temperature testing apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic bottom view of an impact head of the temperature testing apparatus according to an embodiment of the present invention.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a temperature testing device 100.
Referring to fig. 1 to 6, a temperature testing device 100 according to an embodiment of the present invention is used for temperature detection of an optical module 200, where the temperature testing device 100 includes:
the test box 10, the said test box 10 forms the holding cavity 11, the said holding cavity 11 forms the air intake 13 and air outlet 15;
the test control assembly 30, at least part of the test control assembly 30 is accommodated in the accommodating cavity 11 and is electrically connected with the optical module 200; and
the cold-hot impact assembly 50, the cold-hot impact assembly 50 comprises an impact head 55, and the impact head 55 is fixed on the test box 10 and is communicated with the air inlet 13.
According to the technical scheme, the test box 10 with the accommodating cavity 11 is arranged, the part of the test control assembly 30 is accommodated in the accommodating cavity, the air pipe 53 of the cold and hot impact assembly 50 is communicated with the air inlet 13, and the optical module 200 is electrically connected with the test control assembly 30, so that the optical module 200 works normally. When the temperature of the optical module 200 needs to be detected higher, the air outlet temperature of the compressor 51 is adjusted to enable the air pipe 53 to convey high-temperature air from the air inlet 13 to the accommodating cavity 11, and low-temperature air in the accommodating cavity 11 flows out from the air outlet 15, so that the temperature of air in the accommodating cavity 11 is rapidly increased and kept within a certain temperature range, and therefore the optical module 200 conducts heat with the air in the accommodating cavity 11, and the temperature is increased. The test control assembly 30 tests the current temperature and detects the operating state of the optical module 200 at the temperature, thereby completing the test of the optical module 200 at a high temperature. When the temperature of the optical module 200 needs to be detected low, the air outlet temperature of the compressor 51 is adjusted to enable the air pipe 53 to convey low-temperature air from the air inlet 13 to the accommodating cavity 11, and high-temperature air in the accommodating cavity 11 flows out from the air outlet 15, so that the air temperature in the accommodating cavity 11 is rapidly reduced and kept within a certain temperature range, and the optical module 200 conducts heat with the air in the accommodating cavity 11, and the temperature is reduced. The test control assembly 30 tests the current temperature and detects the operating state of the optical module 200 at the temperature, thereby completing the test of the optical module 200 at a high temperature. By adopting the cold and hot impact assembly 50, the temperature in the accommodating cavity 11 can be quickly switched, and the cold and hot test in the same test box 10 can be realized without replacing the test box 10. Therefore, the technical scheme of the invention can complete the conversion of the temperature to be detected of the optical module 200 in a short time, shortens the test time of the optical module 200, improves the test efficiency and is convenient for users to use.
In an embodiment of the present application, the test box 10 may have a retractable structure, so as to facilitate accommodating the optical module 200 in the accommodating cavity 11 and electrically connected to the test control assembly 30. It can be appreciated that, for the convenience of electrical connection with the optical module 200, the test control assembly 30 is provided with a plug interface 311, so as to have a hot plug function, and facilitate the installation of the optical module 200. In an embodiment of the present application, the exhaust pipe 60 is connected to the impact head 55, so that the air in the accommodating cavity 11 can be rapidly exhausted by adopting a pressure difference manner.
In another embodiment of the present application, the test box 10 is of an integral structure, and the interior thereof forms a receiving cavity 11, the wall of the test box 10 forms a through hole, and a portion of the insertion/extraction interface 311 of the test control assembly 30 extends out of the through hole. When the optical module 200 needs to be detected, the optical module 200 is inserted into the plugging interface 311, so that a part of the optical module 200 extends into the accommodating cavity 11, and the thermocouple 335 is convenient for detecting the optical module 200, and the optical module is convenient to use. It can be understood that the plug interface 311 is further provided with a buckle for fixing the optical module 200; the plug interface 311 is externally provided with foam surrounding the plug interface 311, and the foam seals the joint of the plug interface 311 and the wall of the test box 10 to prevent air leakage in the accommodating cavity 11.
And, the material of the test box 10 may be metal (stainless steel material, aluminum alloy material, copper alloy material, iron alloy material, etc.), plastic (hard plastic may be selected as plastic, such as ABS, POM, PS, PMMA, PC, PET, PBT, PPO, etc.), and other alloy materials. Thus, the setting stability of the test box 10 is more facilitated to be improved, and the practicability, reliability and durability of the test box 10 are effectively improved.
It will be appreciated that the cold thermal shock assembly 50 further includes an electric heating wire, and the compressor 51 is started to blow hot air heated by the electric heating wire toward the accommodating chamber 11, thereby increasing the temperature in the accommodating chamber 11. The cold and hot impact assembly 50 may further include a heat exchanger, which is internally condensed to release heat when high-temperature air is required, so that hot air is blown into the accommodating chamber 11 through the compressor 51; when low-temperature air is required, the heat exchanger is caused to evaporate to absorb heat, thereby blowing cool air into the accommodating chamber 11 through the compressor 51.
When the optical module 200 is subjected to high temperature testing, the temperature of the air flow (e.g. 101 ℃) is adjusted, and a large amount of hot air flow is blown into the test box 10 from the upper end, and the temperature and speed of the air flow are continuously adjusted, for example, when the temperature and speed of the hot air flow reach: the hot air flow speed at 101 ℃ is 6L/S, and the temperature value fed back by the thermocouple 335 reaches a stable value (for example, 100 ℃), so that the hot air flow can be adjusted to 6L/S to blow into the test box 10 at a constant speed, and the stable and efficient test of the optical module 200 at the stable value temperature is ensured. (the actual initial state is a curve with lower and lower waves, namely, assuming that 100 ℃ is needed, the temperature of the air flow exceeds 100 ℃ so as to achieve rapid temperature rise, when the surface feedback temperature reaches 100 ℃, the air flow starts to cool down, and then the process is repeated continuously until the air flow is stable)
When the high temperature test is completed and the low temperature test or the normal temperature test is required, the temperature of the air flow needs to be adjusted to ensure that the temperature value fed back by the thermocouple 335 reaches a stable low temperature value. In the present invention, when low temperature air is blown in rapidly, the original high temperature air in the accommodating chamber 11 is discharged rapidly (rapidly discharged by differential pressure) through the exhaust pipe 60 at the upper part of the impact head 55, and then part of the air can be discharged at the air outlet 15 at the lower end of the test box 10. The time for adjusting the switching air flow is very short here, for example: when the air flow provided by the cold and hot impact machine is 8L/S and the internal volume of the sealing box is only 6L, the temperature is raised from 0 ℃ to 70 ℃, and the time required for the temperature rise is as follows: 20s, cooling from 25 ℃ to-25 ℃ for the required time: 26s; the temperature test box provided by the invention can quickly reach the target test temperature, ensure the required stable temperature test environment, and simultaneously automatically adjust the temperature of the air flow to realize that the temperature of the optical module 200 is the designated temperature value to be tested because the blown air flow blows against the optical module 200 through the temperature value fed back by the thermocouple 335 in real time.
Referring to fig. 3 and 5, in an embodiment of the present application, the cold and hot impact assembly 50 includes a compressor 51 and an air pipe 53, one end of the air pipe 53 is communicated with the compressor 51, the other end is communicated with the impact head 55, the air pipe 53 is formed with a first air inlet channel 531, the impact head 55 is formed with a first air outlet channel 551 and a second air inlet channel 553 located in the first air outlet channel 551, and the second air inlet channel 553 is communicated with the first air inlet channel 551 and the air inlet 13. In one embodiment of the present application, the impact head 55 may be provided to provide a better air flow out of the air delivery conduit 53. And because the impact head 55 is also provided with the first air outlet channel 551, the air in the accommodating cavity 11 can be dredged with the air outlet 15 conveniently and the air in the accommodating cavity 11 can be circulated quickly, so that the air flow is prevented from being blocked, local high temperature or low temperature can not be formed, and the detection precision is further improved. It is understood that a portion of the second air inlet channel 553 may extend out of the first air outlet channel 551, or the second air inlet channel 553 may be completely accommodated in the first air outlet channel 551, so long as air outlet and air exhaust are facilitated.
Referring to FIG. 5,In fig. 6, in an embodiment of the present application, in order to further accomplish the change of the temperature to be detected by the optical module 200 in a short time, the second air intake passage 553 may include an air intake section 5533 adjacent to and opposite to the first air intake passage 531 and a diffusion hole 5531 facing away from the air intake section. Further, the diffusion hole 5531 includes a first opening 5531a, a second opening 5531b, and a connection section 5531c, the connection section 5531c connects the first opening 5531a and the second opening 5531b, the first opening 5531a communicates the air outlet section 551 and the connection section 5531c, and an edge of the first opening 5531a encloses a formed area a 1 Area A of the region surrounded by the edge of the second opening 5531b 2 The following relationships are satisfied: a is more than or equal to 1/10 1 /A 2 < 1. The first opening 5531a and the second opening 5531b are arranged to facilitate air to flow into and flow out of the connecting section 5531c, and the air can flow out of the diffusion holes 531 at a certain included angle speed by optimally designing the size relation of the first opening 5531a and the second opening 5531b, so that air can be diffused easily. When A is 1 /A 2 When the ratio is equal to 1/10, the first opening 5531a and the second opening 5531b are convenient for air to flow into and flow out of the connecting section 5531c; when A is 1 /A 2 Equal to 1/2; it is also possible to have both the first opening 5531a and the second opening 5531b facilitate the flow of air into and out of the connecting segment 5531c.
Preferably, the edge of the first opening 5531a encloses the formed area A 1 Area A of the region surrounded by the edge of the second opening 5531b 2 The following relationships are satisfied: a is more than or equal to 1/3 1 /A 2 And is less than or equal to 2/3. Will A 1 /A 2 The air diffusion device is arranged in the range, so that the air can have a certain included angle speed when flowing out from the diffusion holes 5531, and the air diffusion device is very beneficial to the air diffusion.
Preferably, the first opening 5531a and the second opening 5531b are all circular in shape, defining a diameter d of the first opening 5531a 1 Defining the diameter of the second opening 5531b as d 2 Then A 1 ＝π＊(d 1 /2) 2 ，A 2 ＝π＊(d 2 /2) 2 。
Opening a first opening5531a and the second opening 5531b are round, the structure is simple, the manufacturing is easy, the product lines are soft, the air circulation is convenient, and no noise is generated. Of course, in specific applications, the first opening 5531a and the second opening 5531b may be formed in other shapes, for example, the shapes of the first opening 5531a and the second opening 5531b may be polygonal, in which case a 1 、A 2 Is the area of the polygon.
In one embodiment of the present application, the edge of the second opening 5531b encloses a formed area a 2 A third opening 5511 is formed with the edge of the first air outlet channel 551 near the end of the air inlet 13, and the third opening 5511 encloses a region area A 3 ，A 2 And A 3 The following relationships are satisfied: a is more than or equal to 1/10 2 /A 3 < 1. Through carrying out optimal design to second opening 5531b and third opening 5511, on the one hand make the air from the outflow of first air outlet channel 551 convenient, on the other hand make things convenient for the air to possess the speed of certain contained angle when flowing out from diffusion hole 5531 to do benefit to the diffusion. When A is 2 /A 3 When the air flow is equal to 1/10, the air can flow out better, and the diffusion is facilitated; when A is 2 /A 3 When the air flow is equal to 1/2, the air can flow out better, and the diffusion is facilitated.
Preferably, the edge of the second opening 5531b encloses a formed area A 2 Area A of the region surrounded by the edge of the third opening 5511 3 The following relationships are satisfied: a is more than or equal to 1/5 2 /A 3 And is less than or equal to 4/5. Will A 2 /A 3 In this range, on one hand, the air can better flow out from the first air outlet channel 551 conveniently, and on the other hand, the air can better flow out from the diffusion holes 5531 conveniently at a speed with a certain included angle, thereby being beneficial to diffusion. It can be appreciated that the third opening 5511 is circular, and has a simple structure, easy manufacture, soft product lines, and convenient ventilation, and no noise. Define the diameter d of the third opening 5511 3 Then A 3 ＝π＊(d 3 /2) 2 . Of course, in specific applications, the third opening 5511 may be provided in other shapes, for example, the third opening may be providedThe opening 5511 is polygonal in shape, in which case A 3 Is the area of the polygon.
Referring to fig. 1-4, in one embodiment of the present application, the temperature testing device 100 further includes a connector plate 70, wherein the connector plate 70 is disposed around the impact head 55 and sealingly connects the impact head 55 to the junction of the test case 10. The provision of the splice plate 70 seals the junction of the impact head 55 and the test box 10 from squeaking due to the high volume of airflow that can create noise. In particular, the splice plate 70 may be attached to the impact head 55 and the test case 10 using an adhesive or by welding, as long as it is sealed well. And, can also increase the sealed silica gel pad to further improve sealed effect.
Referring to fig. 1, 3 and 4, in an embodiment of the present application, the temperature testing apparatus 100 further includes an exhaust pipe 60 and a muffler 80, where the exhaust pipe 60 is fixedly connected to the impact head 55, the muffler 80 is fixed to an end of the exhaust pipe 60 facing away from the impact head 55, a second air outlet channel 61 is formed in the exhaust pipe 60, and the second air outlet channel 61 is in communication with the first air outlet channel 551. The exhaust pipe 60 is provided to guide out the air in the first air outlet channel 551 of the impact head 55 well. The exhaust pipe 60 is also used for rapidly exhausting the air in the accommodating cavity 11 in a differential pressure mode before temperature switching. Since a sharp squeaking sound is generated in the exhaust pipe 60 during the exhaust process, a muffler 80 is further provided at the end of the exhaust pipe 60. The muffler 80 may be a resistive muffler 80, and the resistive muffler 80 is configured to reduce acoustic energy by reflecting and interfering sound waves during propagation when various muffler units such as an expansion chamber, a resonance chamber, and the like are formed by components such as a pipe, a partition, and the like inside the muffler 80. The resistive muffler 80 has limited noise elimination frequency bands, and has good noise elimination effect on low and medium frequency bands and poor high-frequency noise elimination effect; or a resistive muffler 80, which is a muffler 80 for absorbing sound energy by filling a sound absorbing material around a pipe through which the internal exhaust gas passes to achieve the purpose of noise elimination, and has good effects of middle and high frequency noise elimination, and is generally used in combination with the resistive muffler 80; or the impedance composite muffler 80 is a muffler 80 formed by respectively combining a resistance muffler unit and a sound absorbing material, and has the common characteristics of the resistance muffler 80. Has good silencing effect on low, medium and high frequency noise.
Referring to fig. 2, in one embodiment of the present application, the test control assembly 30 includes:
the test board 31 is accommodated in the accommodating cavity 11, and a plug interface 311 for connecting with the optical module 200 is formed on the test board 31;
the temperature measuring piece 33, wherein the temperature measuring piece 33 moves close to or far from the plug interface 311 and tests the temperature of the optical module 200, and the temperature measuring piece 33 is accommodated in the accommodating cavity 11; and
and the test board 31 and the temperature measuring piece 33 are electrically connected with the controller.
Specifically, in the present embodiment, the plug interface 311 is disposed on the test board 31, so that the optical module 200 is convenient to be powered on and work normally. In an embodiment of the present application, the temperature measuring member 33 may be a temperature sensor or other electronic components with a temperature detecting function, so as to facilitate detecting the surface temperature of the optical module 200 and improve the detection efficiency. The test board 31 may be fixedly connected to the box body through a fixing column, and in particular, the fixing column may be a copper column.
In an embodiment of the present application, the temperature measuring member 33 includes:
the fixed bracket 331 is accommodated in the accommodating cavity 11 and is fixedly connected with the test box 10; the fixed support 331 is arranged, so that other components can be conveniently installed and fixed inside the test box 10, and detection is convenient.
A driving part 333, wherein the driving part 333 is fixedly connected with the fixed bracket 331; and
the thermocouple 335, the thermocouple 335 is movably connected with the fixed bracket 331 and abuts against the housing of the optical module 200 to test the temperature of the optical module 200, the driving part 333 drives the thermocouple 335 to move close to or away from the plugging interface 311, and the thermocouple 335 is electrically connected with the controller.
The temperature testing device 100 further includes a connection cable, the testing box 10 further forms a wire through hole, the connection cable passes through the wire through hole member to electrically connect the testing board 31 and the controller, and timely transmits signals of the testing board 31 to an external testing instrument;
the temperature testing device 100 further includes a waterproof connector 40, where the waterproof connector 40 is sleeved on the wire passing hole, and seals the connection part between the connecting cable and the wire passing hole. In this embodiment, the optical module 200 is provided with an optical signal through a connection cable, and the signal sent by the optical module 200 is transferred to the test instrument and the controller. When the driving part 333 is in a lifting state, the thermocouple 335 is driven to move upwards, and the induction head of the thermocouple 335 leaves the module plugging port, so that the surface damage of the optical module 200 is avoided; when the driving part 333 is in the pressing state, the thermocouple 335 moves downward, so that the sensing head of the thermocouple 335 abuts against the housing of the optical module 200, and the temperature of the housing of the optical module 200 can be fed back through the thermocouple 335 wire. The thermocouple 335 wire is connected to the temperature instrument through the side panel of the test box 10, and the cable of the optical module 200 is connected to the test instrument through the side panel of the box. It can be understood that the place penetrating out of the side panel of the test box 10 is provided with a wire passing hole, and the wire passing hole is internally provided with a waterproof joint 40, the waterproof joint 40 can ensure that the interface is sealed, the air flow can not leak, and the howling caused by the air flow at the gap is avoided.
Further, the driving part 333 includes:
a avoidance cylinder 3331, wherein the avoidance cylinder 3331 is fixedly connected with the fixed bracket 331;
a first rod 3333, wherein the first rod 3333 is fixedly connected with the avoidance cylinder 3331, the first rod 3333 is in a cylindrical shape,
the second rod body 3335, the second rod body 3335 is telescopically sleeved in the first rod body 3333, and the end part of the second rod body 3335, which is away from the first rod body 3333, is fixedly connected with the thermocouple 335; and
the elastic piece is accommodated in the first rod body 3333, one end of the elastic piece is fixedly connected with the first rod body 3333, and the other end of the elastic piece is fixedly connected with the second rod body 3335.
It is understood that the power source of the driving portion 333 may be other linear driving units such as a motor or a screw rod, so long as the driving portion can be driven well. The elastic piece arranged between the first rod body 3333 and the second rod body 3335 can ensure that the sensing head of the thermocouple 335 can not scratch and wear the surface of the optical module 200 due to overlarge force when contacting the surface of the optical module 200, and can also protect the sensing head of the thermocouple 335 from being damaged due to sudden contact with the optical module 200. In this embodiment, the elastic member is a spring, and the spring is sleeved on the outer surface of the second rod 3335 and is accommodated in the cylindrical first rod 3333, and two ends of the spring are respectively fixed with the first rod 3333 and the second rod 3335, so that the second rod 3335 has a better elastic expansion function.
In an embodiment of the present application, a pressure adjusting bolt is disposed on a surface of the first rod 3333 abutted by the spring, and the pressure adjusting bolt is abutted by the spring, so as to control the elastic deformation of the spring, thereby making the measurement of the thermocouple 335 more convenient.
Referring to fig. 1 to 4, further, the test box 10 includes a bottom plate 17, a plurality of side plates 19 extending from the bottom plate 17, and a top plate 18 connected to the side plates 19, and the bottom plate 17, the side plates 19, and the top plate 18 jointly enclose the accommodating cavity 11;
the impact head 55 is fixedly connected with the top plate 18, and the air outlet 15 is provided on the bottom plate 17. The impact head 55 and the air outlet 15 are arranged at different positions in the up-down direction, so that air can circulate in the accommodating cavity 11 conveniently, and local overheating is prevented.
Referring to fig. 4, in an embodiment of the present application, the temperature testing device 100 further includes a silencing sponge 90, where the silencing sponge 90 is disposed on the bottom plate 17 and is located in the accommodating cavity 11;
and/or, the silencing sponge 90 is arranged on the side plate 19 and is positioned in the accommodating cavity 11.
During rapid blowing in and discharging, the air flow can generate larger noise, and the overall noise level is 91-93 dB. After the silencing sponge 90 and the foregoing sound insulation arrangement (the arrangement of the connection plate 70, the silencer 80 and the waterproof joint 40) are adopted, when the initial air flow is blown into the test box 10 in a large amount, the noise is about 78 db, and after the temperature is stable, the air flow is blown into the test box 10 at a uniform speed, and the noise can be reduced to 75 db.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (7)
1. A temperature testing device for temperature testing of an optical module, the temperature testing device comprising:
the test box is provided with a containing cavity, and the containing cavity is provided with an air inlet and an air outlet;
the test control assembly is at least partially accommodated in the accommodating cavity and is electrically connected with the optical module; and
the cold and hot impact assembly comprises an impact head which is fixed on the test box and is communicated with the air inlet;
wherein the test control assembly comprises:
the test board is accommodated in the accommodating cavity and is provided with a plug interface for connecting with the optical module;
the temperature measuring piece is used for testing the temperature of the optical module and is accommodated in the accommodating cavity; and
the test board and the temperature measuring piece are electrically connected with the controller;
the temperature measurement piece includes:
the fixed bracket is accommodated in the accommodating cavity and is fixedly connected with the test box;
the driving part is used for driving the thermocouple to move close to or far away from the plug interface, and is fixedly connected with the fixed support; and
the thermocouple is movably connected with the fixed support and used for testing the temperature of the optical module, the driving part drives the thermocouple to move close to or far away from the plug interface, and the thermocouple is electrically connected with the controller;
the driving section includes:
the avoidance cylinder is fixedly connected with the fixed bracket;
the first rod body is fixedly connected with the avoidance cylinder and is in cylindrical arrangement,
the second rod body is sleeved in the first rod body in a telescopic manner, and the end part, deviating from the first rod body, of the second rod body is fixedly connected with the thermocouple; and
the elastic piece is accommodated in the first rod body, one end of the elastic piece is fixedly connected with the first rod body, and the other end of the elastic piece is fixedly connected with the second rod body;
the cold and hot impact assembly comprises a compressor and a gas pipe, and the temperature testing device further comprises an exhaust pipe and a muffler.
2. The temperature testing device of claim 1, wherein one end of the air delivery pipe is communicated with the compressor, the other end is communicated with the impact head, the air delivery pipe is formed with a first air inlet channel, the impact head is formed with a first air outlet channel and a second air inlet channel positioned in the first air outlet channel, and the second air inlet channel is communicated with the first air inlet channel and the air inlet.
3. The temperature testing device of claim 1, further comprising a connector plate disposed around the impact head and sealingly connecting the impact head to the junction of the test case.
4. The temperature testing device of claim 1, wherein the exhaust pipe is fixedly connected to the impact head, and the muffler is fixed to an end of the exhaust pipe facing away from the impact head.
5. The temperature testing device according to any one of claims 1 to 4, further comprising a connection cable, the test box further formed with a via hole, the connection cable electrically connecting the test board and the controller through the via piece;
the temperature testing device further comprises a waterproof connector which is sleeved on the wire passing hole and seals the joint of the connecting cable and the wire passing hole.
6. The temperature testing device according to any one of claims 1 to 4, wherein the testing box comprises a bottom plate, a plurality of side plates extending from the bottom plate, and a top plate connected to the side plates, the bottom plate, the side plates, and the top plate collectively enclosing the accommodation chamber;
the impact head is fixedly connected with the top plate, and the air outlet is formed in the bottom plate.
7. The temperature testing device of claim 6, further comprising a sound dampening sponge disposed in the base plate and positioned within the receiving cavity;
and/or the silencing sponge is arranged on the side plate and positioned in the accommodating cavity.
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| CN201810840798.9A CN108709654B (en) | 2018-07-26 | 2018-07-26 | Temperature testing device |
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| CN201810840798.9A CN108709654B (en) | 2018-07-26 | 2018-07-26 | Temperature testing device |
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| CN108709654B true CN108709654B (en) | 2024-01-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020176999A1 (en) * | 2019-03-06 | 2020-09-10 | Kingtiger Technology (Canada) Inc. | System and method for verifying and analyzing memory for high performance computing systems |
| CN110174247B (en) * | 2019-05-29 | 2024-07-09 | 深圳市亚派光电器件有限公司 | Optical device testing device |
| CN111721440A (en) * | 2020-05-28 | 2020-09-29 | 武汉华工正源光子技术有限公司 | High-low temperature test system of optical module |
| CN112924775A (en) * | 2021-01-21 | 2021-06-08 | 瑞泰(威海)电子科技有限公司 | Optical module semi-automatic three-temperature calibration test tool |
| CN115266025A (en) * | 2022-06-29 | 2022-11-01 | 新菲光通信技术有限公司 | Temperature testing device and temperature testing system |
| CN116818119A (en) * | 2023-06-28 | 2023-09-29 | 苏州联讯仪器股份有限公司 | Testing device for testing optical module and water cooling system |
| CN117930089B (en) * | 2024-03-18 | 2024-05-24 | 江苏国晟世安新能源有限公司 | Marine photovoltaic connector electrical connection performance test equipment |
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