CN219997120U - Temperature generating device and terminal test equipment - Google Patents

Abstract

The embodiment of the application provides a temperature generating device and terminal test equipment. The accommodating cavity of the box body can be internally provided with a piece to be tested, and the heating part and the refrigerating part of the temperature change assembly can respectively emit heat and absorb heat to the interior of the accommodating cavity, so that the high-low temperature adjustment of the interior of the accommodating cavity is realized. The air curtain generated by the air curtain component cuts off the inner and outer air flow of the opening of the box body, reduces the heat exchange between the inner and outer parts of the box body, and forms a semi-open high-low temperature groove structure. Under the high-low temperature environment formed by the temperature generating device, a user can perform man-machine interaction operation on the to-be-detected piece in the box body, the actual use scene of the user at high and low temperatures is better simulated, and the test scene is relatively close to the actual use scene. The temperature generating device can be fixed on the mobile vehicle, and the camera to be detected can move along with the mobile vehicle, so that scene shooting is realized. The simulated finger piece stretches into the accommodating cavity from the opening of the box body, so that the operation of a user on the touch display screen to be tested can be simulated, and whether the touch display screen has faults at high and low temperatures can be judged.

Description

Temperature generating device and terminal test equipment

Technical Field

The embodiment of the application relates to the technical field of high-low temperature environment test, in particular to a temperature generating device and terminal test equipment.

Background

The conventional device can be tested in a high-low temperature environment (such as-20 ℃ to 60 ℃) by adopting a traditional incubator testing device so as to evaluate the performance condition of the device at high and low temperatures. The traditional incubator testing device comprises a box body, a glass movable door, a refrigerating device and a heating device, wherein the glass movable door is arranged on the box body in an openable and closable manner. The to-be-tested piece is placed in the box body, so that the glass movable door is closed, the refrigerating device or the heating device starts to work, refrigeration or heating is realized, and a high-low temperature environment is built in the box body. The whole volume of the traditional incubator testing device is large, and the weight is large.

In the high-low temperature environment, in the process of man-machine interaction between a user and a terminal (such as a mobile phone, a tablet and the like), the terminal can possibly fail in devices such as screen touch or display, a camera or a flash lamp and the like. The terminal is tested in a traditional incubator testing device in a high-low temperature environment, the glass movable door needs to be closed, so that the terminal is kept in the closed box, a user cannot perform man-machine interaction operation on the terminal through the glass movable door, and the actual use scene of the user at high and low temperatures, such as a scene of a manual touch screen, a screen display, photographing and the like, is difficult to simulate well.

Disclosure of Invention

The embodiment of the application provides a temperature generating device and terminal test equipment, which solve the problem that the traditional incubator test device is difficult to better simulate the actual use scene of a user at high and low temperatures.

The embodiment of the application adopts the following technical scheme:

in a first aspect, an embodiment of the present application provides a temperature generating device, including a case, a temperature changing assembly, and an air curtain assembly. The box body is provided with a containing cavity and an opening which are communicated, and the containing cavity can contain the to-be-measured piece. The temperature change assembly is provided with a heating part and a refrigerating part, the heating part and/or the refrigerating part are/is arranged towards the inside of the accommodating cavity, the heating part is used for emitting heat to the inside of the accommodating cavity, and the refrigerating part is used for absorbing heat to the inside of the accommodating cavity. The air curtain component is used for generating an air curtain at the opening so as to separate the inner air flow of the accommodating cavity from the outer air flow of the box body.

According to the temperature generating device provided by the embodiment of the application, the to-be-detected piece can be arranged in the accommodating cavity of the box body, and the heating part and the refrigerating part of the temperature change assembly can respectively emit heat and absorb heat to the interior of the accommodating cavity, so that the high-low temperature adjustment of the interior of the accommodating cavity is realized. The air curtain generated by the air curtain component cuts off the internal and external air flow of the opening of the box body, reduces the heat exchange between the inside and the outside of the box body, forms a semi-open high-low temperature groove structure, effectively avoids the condition that the glass movable door of the traditional incubator testing device has condensation, and ensures the refrigeration effect of the refrigeration part or the heating effect of the heating part. Under the high-low temperature environment that temperature generating device formed, the user can carry out man-machine interaction operation to the terminal in the box when the piece that awaits measuring is the terminal, simulate user's in-service use scene when high low temperature better, like people's hand touch screen, screen display, shoot etc. test scene is relatively close in-service use scene.

In an alternative implementation, the case can be made to be a minimum of two or three test piece stacking structures. The accommodating cavity of the box body can be used for accommodating the to-be-tested piece. Compared with the traditional incubator testing device, the incubator body in the temperature generating device can be made smaller.

In an alternative implementation, a carrier is detachably mounted in the box, and the carrier is used for fixing the to-be-tested piece. The device can enable the accommodating cavity of the box body to reach the target temperature faster, reduce the realization time of a high-low temperature environment and improve the test efficiency.

In an alternative implementation mode, the carrying platform is plate-shaped, the carrying platform is detachably arranged on the inner bottom surface of the box body, the space of the containing cavity occupied by the plate-shaped carrying platform is small, the box body can be made small, and the to-be-tested piece is conveniently placed on the carrying platform.

In an alternative implementation, semiconductor refrigeration sheets or vortex tubes are used as temperature varying components, these being miniaturized heat exchange means. The size of the box body and the temperature change assembly can be smaller, and the temperature change assembly and the box body are arranged adjacently, so that the whole structure of the temperature generating device is smaller in size and compact in structure.

In an alternative implementation, the temperature-varying component includes a first semiconductor refrigeration sheet having a first hot end and a first cold end disposed opposite each other, and a second semiconductor refrigeration sheet having a second hot end and a second cold end disposed opposite each other, the first hot end being disposed as a heating portion and toward the interior of the receiving cavity, and the second cold end being disposed as a cooling portion and toward the interior of the receiving cavity.

When heating is needed, direct current is fed into the first semiconductor refrigerating sheet, and the first hot end releases heat to heat the inside of the accommodating cavity. When refrigeration is needed, direct current is fed into the second semiconductor refrigeration piece, and the second cold end absorbs heat to cool the inside of the accommodating cavity.

In an alternative implementation manner, the carrying platform can be set to have a larger heat exchange area, and the first hot end of the first semiconductor refrigeration piece and the second cold end of the second semiconductor refrigeration piece can be in contact with the carrying platform, so that good heat conduction is formed between the first semiconductor refrigeration piece and the carrying platform and between the second semiconductor refrigeration piece and the carrying platform, and a preset high-low temperature environment is formed in the accommodating cavity faster.

In an alternative implementation, the temperature-varying assembly includes a first semiconductor refrigeration sheet having a first hot end and a first cold end disposed opposite each other, the first hot end being a heating portion, the first cold end being a cooling portion, the first hot end and the first cold end being selectively disposed toward the interior of the receiving cavity.

According to the demand for heating or cooling in the accommodating cavity, the direct current direction of the first semiconductor cooling plate is changed, and heating or cooling can be realized on one end of the first semiconductor cooling plate facing the accommodating cavity.

In an alternative implementation, the carrier may be configured to have a larger heat exchange area, and an end of the first semiconductor refrigeration sheet facing the accommodating cavity may be in contact with the carrier, so that good heat conduction is formed between the first semiconductor refrigeration sheet and the carrier, and a predetermined high-low temperature environment is formed in the accommodating cavity faster.

In an alternative implementation, the temperature varying assembly includes a vortex tube, a first passage, a second passage, a first control valve, and a second control valve. The vortex tube is provided with an input end, a hot air end and a cold air end which are communicated with each other, wherein the input end is used for introducing compressed air, the hot air end is used for outputting hot air, and the cold air end is used for outputting cold air. The hot air end is communicated with the accommodating cavity through a first channel, a first control valve is arranged on the first channel, and the first channel is used as a heating part. The cold air end is communicated with the accommodating cavity through a second channel, a second control valve is arranged on the second channel, and the second channel is used as a refrigerating part.

Compressed air is introduced into the input end of the vortex tube, hot air is output from the hot air end, and cold air is output from the cold air end. When heating is needed, the first control valve is opened to enable hot air output by the hot air end to enter the accommodating cavity through the first channel, and the second control valve is adjusted to enable cold air output by the cold air end not to enter the accommodating cavity, so that the temperature inside the accommodating cavity is increased. When refrigeration is needed, the second control valve is opened to enable cold air output by the cold air end to enter the accommodating cavity through the second channel, and the first control valve is adjusted to enable hot air output by the hot air end not to enter the accommodating cavity, so that the interior of the accommodating cavity is cooled.

In an alternative implementation, the air curtain assembly is located outside the tank, the tank has a pipeline, a first port of the pipeline is connected to an output end of the air curtain assembly, and a second port of the pipeline is disposed toward the opening.

The drying air flow generated by the air curtain component can be sent into the opening of the box body through the pipeline, so that the air flow inside and outside the box body is blocked, the heat exchange inside and outside the box body is reduced, and the water vapor of the outside air is reduced to enter the box body.

In an alternative implementation, the second port may be disposed toward the center of the opening such that compressed air exiting the second port may cover the opening.

In an alternative implementation manner, the plurality of second ports can be annularly arranged on the inner wall of the opening, so that the air curtain coming out of the second ports well covers the opening of the box body to isolate the air flow in the box body from the external air flow, and the heat exchange between the inside and the outside of the box body is reduced.

In some embodiments, the housing has an air duct in communication with the receiving chamber, and the temperature generating device further includes a ventilation assembly having an air outlet end connected to the air duct.

The air flow generated by the ventilation assembly enters the accommodating cavity through the air duct, and the air flow sent into the accommodating cavity can enable the heat distribution in the accommodating cavity to be more uniform, so that the actual high-low temperature environment is better simulated.

In an alternative implementation, the tank has a thermal barrier. The heat insulation layer is arranged to enable the box body to have a good heat insulation effect, and the outer wall of the box body is close to the external temperature.

In an alternative implementation, the case further has a reinforcing layer disposed outside the thermal insulation layer, which can improve structural strength.

In an alternative implementation, a temperature sensor is provided in the housing for measuring the internal temperature of the receiving chamber. The actual temperature inside the accommodating cavity is measured through the temperature sensor, so that the temperature change assembly is convenient to adjust, and the accommodating cavity is refrigerated or heated, so that the target temperature is reached.

In an alternative implementation, the temperature sensor is electrically connected to the processor and the processor is electrically connected to the temperature change assembly. The temperature sensor, the processor and the temperature change component are combined to form a closed-loop temperature control system, so that the temperature inside the box body is kept at the target temperature.

In an alternative implementation, a humidity sensor is provided within the housing for measuring the internal humidity of the containment chamber. Humidity in the accommodating cavity can be detected through the humidity sensor, and whether fog in the accommodating cavity disappears can be judged according to the humidity.

In a second aspect, an embodiment of the present application provides a terminal test apparatus, including a mobile vehicle and the above-mentioned temperature generating device, where the temperature generating device can be fixed on the mobile vehicle.

The terminal test equipment provided by the embodiment of the application adopts the temperature generating device, and the whole temperature generating device can be arranged smaller, so that the temperature generating device can be conveniently fixed on a mobile vehicle. When the piece to be measured is a camera or a terminal with a camera, the piece to be measured is arranged on the temperature generating device, can move along with the mobile vehicle, can photograph and pick up different indoor and outdoor test objects, and realizes scene photographing. Compared with the traditional incubator testing device in which the camera shoots through the glass movable door, the terminal testing device in the application can shoot external testing objects directly through the opening of the box body, so that the camera shooting and video functional effect testing can be realized, and the shooting scene of a user can be simulated more truly.

In an alternative implementation manner, the device further comprises a movable component, the movable component is provided with a movable end capable of moving in multiple degrees of freedom, the movable component is arranged on the mobile vehicle, and the temperature generating device can be fixed on the movable end. The temperature generating device is arranged at the movable end, so that the temperature generating device is conveniently fixed on the mobile vehicle, and the position and the orientation of the camera in the temperature generating device are adjusted.

In a third aspect, an embodiment of the present application provides a terminal testing apparatus, including a simulated finger member and the above-mentioned temperature generating device, where the simulated finger member can extend into the accommodating cavity to contact a to-be-tested member in the accommodating cavity.

According to the terminal test equipment provided by the embodiment of the application, the temperature generating device is adopted, when the piece to be tested is the touch display screen, the simulated finger piece is adopted to extend into the accommodating cavity from the opening of the box body, so that the touch display screen is clicked or slid, the operation of a user on the touch display screen is simulated, the display effect of the touch display screen during man-machine interaction can be observed, and whether the touch display screen has faults or not is judged.

In an alternative implementation mode, the device further comprises a moving assembly, wherein the moving assembly is provided with a moving end with multiple degrees of freedom of movement, the simulated finger piece is arranged on the moving end, and the moving end is used for driving the simulated finger piece to move. The movement assembly drives the simulated finger to move, so that clicking or sliding operation of the touch display screen when a user uses the terminal is simulated.

In an alternative implementation manner, the device further comprises a display vision sensor, wherein the display vision sensor and the simulated finger piece are relatively fixedly arranged, and the display vision sensor is used for shooting the piece to be detected. When the piece to be measured is a display screen, the display effect of the display screen can be more accurately obtained through the display visual sensor.

Drawings

FIG. 1 is a schematic diagram of a temperature generating device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of the temperature generating device of FIG. 1 during terminal testing;

fig. 3 is a schematic structural view of a semiconductor cooling fin in the temperature generating device of fig. 1;

FIG. 4 is a schematic diagram of a temperature generating device according to another embodiment of the present application;

FIG. 5 is a schematic diagram of a temperature generating device according to another embodiment of the present application;

FIG. 6 is a schematic diagram of a vortex tube in the temperature generating device of FIG. 5;

fig. 7 is a schematic structural diagram of a terminal test device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal test device according to another embodiment of the present application.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. While the description of the application will be presented in connection with certain embodiments, it is not intended to limit the features of this application to only this embodiment. Rather, the purpose of the description in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the application. The following description contains many specific details for the purpose of providing a thorough understanding of the present application. The application may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the application. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be understood that in the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and for example, the terms "connected" may be either detachably connected or non-detachably connected; may be directly connected or indirectly connected through an intermediate medium. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are 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 one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the embodiment of the present application, "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

When the terminal is tested at high and low temperatures in the traditional incubator testing device, the glass movable door needs to be closed, so that the terminal is kept in the closed box, the heat exchange between the inside and the outside of the box is prevented, and the refrigeration effect of the refrigeration device or the heating effect of the heating device is ensured. When the temperature difference between the inside and the outside of the box body is large, condensation dew can be generated on the glass movable door in a closed state, and the test of the to-be-tested piece can be influenced. For example, the part to be tested is a terminal with a camera, and the camera needs to shoot a standard graphic card positioned outside the box body through the closed glass movable door. If condensation dew exists on the glass movable door, the visual field of the camera is affected, and the shooting test of the camera is affected. Moreover, the camera needs to penetrate the closed glass movable door, and the glass light transmission has light refraction condition, can influence the image that the camera obtained, influences the shooting test of camera. By adopting the traditional incubator testing device, the terminal is tested in a high-low temperature environment, a user cannot perform man-machine interaction operation on the terminal through the glass movable door, and the actual use scene of the user at high and low temperatures is difficult to simulate.

Referring to fig. 1, an embodiment of the present application provides a temperature generating device 100, which includes a case 10, a temperature changing assembly 20, and an air curtain assembly 30. The case 10 has a housing chamber 11 and an opening 12 communicating with each other, and the housing chamber 11 is capable of housing the member 1 to be measured. The temperature change module 20 includes a heating portion 20a and a cooling portion 20b, the heating portion 20a and/or the cooling portion 20b being disposed toward the inside of the accommodating chamber 11, the heating portion 20a being configured to emit heat into the accommodating chamber 11, and the cooling portion 20b being configured to absorb heat into the accommodating chamber 11. The air curtain assembly 30 is used to create an air curtain 31 (shown by the dashed arrow in fig. 1) at the opening 12 to block the flow of air inside the receiving chamber 11 from the flow of air outside the cabinet 10.

The to-be-measured device 1 may be various terminals, particularly, terminals with a man-machine interaction function, or terminals sensitive to temperature, such as a mobile phone (e.g., a bar screen mobile phone, a folding screen mobile phone, etc.), a tablet computer, an electronic book reader, a netbook, a personal digital assistant, a wearable device (e.g., a wearable watch), a camera 1a, a fingerprint sensor, an approaching light sensor, a 3D structure light sensor, etc. In the temperature generating device 100 according to the embodiment of the present application, various terminals can perform performance tests under high and low temperature environments, such as touch control, display, photographing, charging, and the like. For temperature sensitive terminals, performance tests may be performed at different temperatures.

The heating part 20a and the cooling part 20b of the temperature change assembly 20 can respectively emit heat and absorb heat to the inside of the accommodating cavity 11, so that a high-low temperature environment is formed inside the accommodating cavity 11. For example, the temperature change assembly 20 may be formed to have a high-low temperature range of [ -20 ℃,60 ℃), but the specific range is not limited and is set as required. Among them, the low temperature test of the test piece 1 is important.

Illustratively, referring to fig. 2, the part 1 to be measured is a camera 1a or a terminal having the camera 1 a. Before testing, the part 1 to be tested is arranged in the accommodating cavity 11 of the box body 10, the camera 1a faces the opening 12 of the box body 10, and the standard chart card 2 is arranged outside the opening 12 of the box body 10. At the time of the test, the air curtain assembly 30 is opened to generate the air curtain 31 at the opening 12, and the temperature change assembly 20 is opened to adjust the temperature inside the accommodating chamber 11 to a target temperature. Under the high-temperature or low-temperature environment, the camera 1a is enabled to shoot the standard image card 2, and the accuracy degree of parameters such as color accuracy, definition, color temperature and the like of the obtained image of the camera 1a can be judged by comparing the obtained image of the camera 1a with the standard image card 2. Can avoid traditional incubator testing arrangement's glass dodge gate to have the condition that condensation dew influences camera 1a test, camera 1a need not to receive the light refraction influence of glass dodge gate, and the shooting test effect of camera 1a is closer to actual use scene. When the camera 1a is provided with an automatic flash, it is possible to observe whether the flash is normally turned on in a high-low temperature environment.

For example, referring to fig. 1, the part 1 to be measured is a terminal having a touch display screen 1 b. Before testing, the terminal is placed in the receiving cavity 11 of the case 10 with the touch display screen 1b facing the opening 12 of the case 10. At the time of the test, the air curtain assembly 30 is opened to generate the air curtain 31 at the opening 12, and the temperature change assembly 20 is opened to adjust the temperature inside the accommodating chamber 11 to a target temperature. Under the high-temperature or low-temperature environment, a tester can stretch hands into the accommodating cavity 11 through the opening 12, so that fingers can click or slide the touch display screen 1b, the display effect of the touch display screen 1b during man-machine interaction can be observed, and whether the touch display screen 1b has faults at high and low temperatures can be judged.

According to the temperature generating device 100 provided by the embodiment of the application, the to-be-detected piece 1 can be arranged in the accommodating cavity 11 of the box body 10, and the heat release and the heat absorption of the interior of the accommodating cavity 11 can be respectively carried out through the heating part 20a and the cooling part 20b of the temperature change assembly 20, so that the high and low temperature adjustment of the interior of the accommodating cavity 11 is realized. The air curtain 31 generated by the air curtain component 30 cuts off the internal and external air flows of the opening 12 of the box body 10, reduces the heat exchange between the inside and the outside of the box body 10, forms a semi-open high-low temperature groove structure, effectively avoids the condition that the glass movable door of the traditional incubator testing device has condensation, and ensures the refrigeration effect of the refrigeration part 20b or the heating effect of the heating part 20 a. Under the high-low temperature environment formed by the temperature generating device 100, when the piece 1 to be tested is a terminal, a user can perform man-machine interaction operation on the terminal in the box 10, so that the actual use scene of the user at high and low temperatures, such as a human hand touch screen, screen display, photographing and the like, is better simulated, and the test scene is relatively close to the actual use scene.

When the case 10 is provided, referring to fig. 1, the case 10 may be provided in a rectangular parallelepiped or other shape. The case 10 can be made to have a minimum size of two or three stacked structures of the test pieces 1. The accommodating cavity 11 of the box body 10 can be placed into the to-be-tested piece 1. For example, the part 1 to be tested is a mobile phone, and the case 10 may be manufactured to have a size of two or three stacked structures of mobile phones. The case 10 in the temperature generating device 100 according to the embodiment of the present application can be made smaller than the conventional incubator test apparatus.

In some embodiments, referring to fig. 1, a carrier 50 is detachably mounted in the case 10, and the carrier 50 is used for fixing the workpiece 1.

Before the high-low temperature environment test is performed on the to-be-tested piece 1, conventional high-temperature or low-temperature treatment is performed on the carrying platform 50, so that the carrying platform 50 changes temperature quickly, then the carrying platform 50 is placed in the box body 10, and the to-be-tested piece 1 is fixed on the carrying platform 50, so that the accommodating cavity 11 of the box body 10 can reach the target temperature quickly, the implementation time of the high-low temperature environment is reduced, and the test efficiency is improved. The carrier 50 may be made of solid metal (such as copper, aluminum), graphene or other materials, so as to facilitate heat conduction between the temperature-varying component 20, the carrier 50 and the workpiece 1.

There are various removable connection means between the carrier 50 and the case 10, such as a buckle, a fastener (e.g., a screw), magnetic attraction, etc.

The carrier 50 may be provided with a clamp for fixing the part 1 to be measured, and the clamp may be a buckle or other form.

Illustratively, the carrier 50 is plate-shaped, the carrier 50 is detachably mounted on the inner bottom surface of the case 10, and the plate-shaped carrier 50 occupies a small space of the accommodating cavity 11, so that the case 10 can be made smaller, and the workpiece 1 to be measured is also conveniently placed on the carrier 50. In addition, the stage 50 may be provided in other shapes. The carrier 50 may be disposed at other locations within the housing 10.

There are a number of alternative implementations in providing the temperature change assembly 20. The temperature generating device 100 according to the embodiment of the present application adopts a semiconductor refrigeration sheet or a vortex tube as the temperature varying unit 20, which is a miniaturized heat exchanging method. The size of the case 10 and the temperature-varying assembly 20 can be smaller, and the temperature-varying assembly 20 and the case 10 can be adjacently arranged, so that the overall structure of the temperature generating device 100 is smaller and the structure is compact. Compared with the traditional incubator testing device, the overall size and weight of the temperature generating device 100 are greatly reduced, and the miniaturization and the light weight of the temperature generating device 100 are realized.

Referring to fig. 1, a first implementation of the temperature change assembly 20 is a plurality of semiconductor refrigeration tablets: the temperature-varying assembly 20 includes a first semiconductor refrigeration sheet 21 having a first hot end 21a and a first cold end 21b disposed opposite each other, and a second semiconductor refrigeration sheet 22 having a second hot end 22a and a second cold end 22b disposed opposite each other, the first hot end 21a being provided as a heating portion 20a and facing the inside of the accommodating chamber 11, and the second cold end 22b being provided as a cooling portion 20b and facing the inside of the accommodating chamber 11.

The semiconductor refrigerating sheet utilizes the Peltier effect of semiconductor material (such as bismuth telluride), and when direct current passes through a couple formed by connecting two different semiconductor materials in series, the semiconductor refrigerating sheet can absorb heat and emit heat at two ends of the couple respectively, so that refrigeration and heating are realized respectively. By changing the polarity of the direct current, heating or cooling can be realized on the same end of the same semiconductor cooling plate.

Referring to fig. 3, each semiconductor refrigeration sheet includes two spaced apart ceramic sheets 211, an N-type semiconductor 212 and a P-type semiconductor 213 positioned between the two ceramic sheets 211, and a plurality of flow guide bars 214. The N-type semiconductors 212 and the P-type semiconductors 213 are staggered, and adjacent N-type semiconductors 212 and P-type semiconductors 213 are connected in series through a flow guiding strip 214 to form a galvanic couple. When an N-type semiconductor 212 and a P-type semiconductor 213 form a couple, direct current is connected in the circuit, so that energy transfer is generated; the current flows from the N-type semiconductor 212 to the corresponding ceramic wafer 211 at the P-type semiconductor 213 to absorb heat, and the ceramic wafer 211 becomes the cold end 21b; heat is released from the P-type semiconductor 213 to the corresponding ceramic wafer 211 at the N-type semiconductor 212, and the ceramic wafer 211 becomes the hot end 21a. In the logarithmic determination of the N-type semiconductor 212 and the P-type semiconductor 213, the heat absorption rate and the heat release rate of the semiconductor cooling fin can be realized by changing the magnitude of the direct current. The semiconductor refrigerating sheet can be driven to work by a conventional semiconductor refrigerating sheet driving circuit, so that the direct current size and direction can be adjusted, and the temperature inside the accommodating cavity 11 can be adjusted in a lifting manner.

In the present embodiment, referring to fig. 1, a first semiconductor refrigeration sheet 21 and a second semiconductor refrigeration sheet 22 are arranged, the first hot end 21a of the first semiconductor refrigeration sheet 21 being provided as a heating portion 20a toward the inside of the accommodating chamber 11, and the second cold end 22b of the second semiconductor refrigeration sheet 22 being provided as a cooling portion 20b toward the inside of the accommodating chamber 11. When heating is required, direct current is supplied to the first semiconductor refrigeration sheet 21, and the first hot end 21a releases heat to heat the interior of the accommodating chamber 11. When refrigeration is needed, direct current is supplied to the second semiconductor refrigeration piece 22, and the second cold end 22b absorbs heat to cool the inside of the accommodating cavity 11.

When the first semiconductor refrigeration piece 21 is arranged, the first cold end 21b faces the external environment of the box body 10, so that the influence on the heat inside the accommodating cavity 11 is reduced, for example, the first semiconductor refrigeration piece 21 is embedded on the box body 10, and the first cold end 21b is arranged back to the accommodating cavity 11.

When the second semiconductor refrigeration sheet 22 is disposed, the second hot end 22a may face the external environment of the case 10, so as to reduce the influence on the heat inside the accommodating cavity 11, for example, the second semiconductor refrigeration sheet 22 is embedded on the case 10 and the second hot end 22a is disposed opposite to the accommodating cavity 11.

When the carrier 50 is disposed in the case 10, the carrier 50 may have a large heat exchange area, and the first hot end 21a of the first semiconductor cooling fin 21 and the second cold end 22b of the second semiconductor cooling fin 22 may be in contact with the carrier 50, so that good heat conduction is formed between the first semiconductor cooling fin 21 and the carrier 50, and between the second semiconductor cooling fin 22 and the carrier 50, and a predetermined high-low temperature environment is formed in the accommodating chamber 11.

Referring to fig. 4, the second temperature change assembly 20 is implemented as a single semiconductor refrigeration sheet: the temperature-varying assembly 20 includes a first semiconductor refrigerating sheet 21, the first semiconductor refrigerating sheet 21 having a first hot end 21a and a first cold end 21b disposed opposite to each other, the first hot end 21a serving as a heating portion 20a, the first cold end 21b serving as a refrigerating portion 20b, and the first hot end 21a and the first cold end 21b being selectively disposed toward the inside of the accommodating chamber 11.

Depending on the need for heating or cooling in the accommodating chamber 11, the direction of the direct current flowing into the first semiconductor cooling fin 21 is changed, and heating or cooling can be achieved at the end of the first semiconductor cooling fin 21 facing the accommodating chamber 11. When heating is required, as shown in fig. 3, a direct current in a predetermined direction is supplied to the first semiconductor refrigeration sheet 21, and the end facing the accommodating chamber 11 is the first hot end 21a, so that heat can be released from the interior of the accommodating chamber 11. When refrigeration is needed, direct current in the opposite direction is supplied to the first semiconductor refrigeration piece 21, one end facing the accommodating cavity 11 is converted into a first cold end 21b, and heat can be absorbed in the accommodating cavity 11. The heat absorption rate and the heat release rate of the semiconductor refrigeration piece can be realized by changing the direct current.

When the stage 50 is disposed in the case 10, the stage 50 may be disposed with a large heat exchange area, and one end of the first semiconductor refrigeration sheet 21 facing the accommodating chamber 11 may be in contact with the stage 50, so that good heat conduction is formed between the first semiconductor refrigeration sheet 21 and the stage 50, and a predetermined high-low temperature environment is formed in the accommodating chamber 11 relatively quickly.

Referring to fig. 5 and 6, the third temperature change assembly 20 is implemented by a vortex tube 23: the temperature dependent assembly 20 comprises a vortex tube 23, a first passage 24, a second passage 25, a first control valve 26 and a second control valve 27. The vortex tube 23 has an input end 23a, a hot air end 23b and a cold air end 23c which are communicated with each other, the input end 23a being used for inputting compressed air, the hot air end 23b being used for outputting hot air, and the cold air end 23c being used for outputting cold air. The hot air end 23b is communicated with the accommodating cavity 11 through a first channel 24, a first control valve 26 is arranged on the first channel 24, and the first channel 24 serves as a heating part 20a. The cold air end 23c is communicated with the accommodating cavity 11 through a second channel 25, a second control valve 27 is arranged on the second channel 25, and the second channel 25 serves as a refrigerating part 20b.

The vortex tube 23 is a refrigerating and heating element using compressed air, and is also called a devil's-kit tube. Compressed air is introduced into an input end 23a of the vortex tube 23, a high-speed air flow generates vortex in the vortex tube 23 to separate cold air and hot air, a cold air end 23c of the vortex tube 23 ejects cold air to realize refrigeration, and a hot air end 23b ejects hot air to realize heating. The vortex tube 23 converts the compressed air into hot air up to 127 c and cold air up to-46 c.

In the present embodiment, the vortex tube 23, the first passage 24, the second passage 25, the first control valve 26, and the second control valve 27 are arranged, compressed air is introduced into the input end 23a of the vortex tube 23, hot air is output from the hot air end 23b, and cold air is output from the cold air end 23 c. When heating is required, the first control valve 26 is opened to enable the hot air output by the hot air end 23b to enter the accommodating cavity 11 through the first channel 24, and the second control valve 27 is adjusted to enable the cold air output by the cold air end 23c not to enter the accommodating cavity 11, so that the interior of the accommodating cavity 11 is heated. The amount of intake air of the hot gas can be adjusted by changing the opening degree of the first control valve 26 to change the rate of temperature rise.

When refrigeration is required, the second control valve 27 is opened to enable cold air output by the cold air end 23c to enter the accommodating cavity 11 through the second channel 25, and the first control valve 26 is adjusted to enable hot air output by the hot air end 23b not to enter the accommodating cavity 11, so that the interior of the accommodating cavity 11 is cooled. The amount of cold air intake can be adjusted by changing the opening of the second control valve 27 to change the rate of temperature decrease.

The vortex tube 23 is driven to work by cheap compressed air, and has simple structure and high reliability. The compressed air required for the vortex tube 23 may be provided by the air curtain assembly 30, i.e. the compressed air provided by the air curtain assembly 30 may form an air curtain 31 at the opening 12 of the tank 10, which compressed air also drives the vortex tube 23 into operation. The air curtain assembly 30 and the input end 23a of the vortex tube 23 may be connected by a third passageway 28.

The vortex tube 23, the first passage 24, the second passage 25, the first control valve 26 and the second control valve 27 may be provided outside the tank 10. The vortex tube 23 may be spaced from the tank 10 or the vortex tube 23 and the tank 10 may be fixed relative to each other.

When the first control valve 26 and the second control valve 27 are provided, electromagnetic valves can be used, the electromagnetic valves can adjust parameters such as the direction, the flow rate, the speed and the like of the fluid medium, and the electromagnetic valves can be matched with a preset circuit to realize expected control.

When the first channel 24 and the second channel 25 are provided, the box 10 is provided with two through holes 13, and one pipe body can be respectively fixed at the two through holes 13, so that the pipe body and the inner wall of the through hole 13 are sealed, and each pipe body forms one channel.

In some embodiments, referring to FIG. 1, the air curtain assembly 30 is positioned outside the tank 10, the tank 10 has a conduit 14, a first port 141 of the conduit 14 is connected to an output end of the air curtain assembly 30, and a second port 142 of the conduit 14 is disposed toward the opening 12.

The dry air flow generated by the air curtain component 30 can be sent into the opening 12 of the box body 10 through the pipeline 14, so that the air flow inside and outside the box body 10 is blocked, the heat exchange inside and outside the box body 10 is reduced, the water vapor of the outside air is reduced to enter the box body 10, when the high-low temperature environment is formed in the box body 10, a user can stretch hands or operate the to-be-detected piece 1 in the box body 10 by the object, and the actual use situation of the user at the high-low temperature is simulated. The air curtain assembly 30 may be a compressed air blower or an air compressor, both of which can provide dry compressed air.

When the second port 142 of the pipe 14 is provided, referring to fig. 1, the second port 142 may be disposed toward the center of the opening 12, so that the compressed air coming out of the second port 142 may cover the opening 12. The second port 142 may be provided with one or more. When the plurality of second ports 142 are provided, the plurality of second ports 142 may be annularly arranged on the inner wall of the opening 12, so that the air curtain 31 coming out of the second ports 142 preferably covers the opening 12 of the box 10, to isolate the air flow inside the box 10 from the air flow outside the box 10, and reduce the heat exchange between the inside and the outside of the box 10.

In some embodiments, referring to fig. 1, the case 10 has an air duct 15, the air duct 15 is in communication with the accommodating chamber 11, and the temperature generating device 100 further includes a ventilation assembly 40, and an air outlet end 41 of the ventilation assembly 40 is connected to the air duct 15.

The air flow generated by the ventilation assembly 40 enters the accommodating cavity 11 through the air duct 15, and the air flow sent into the accommodating cavity 11 can enable the heat distribution in the accommodating cavity 11 to be more uniform, so that the actual high-low temperature environment can be better simulated. The ventilation assembly 40 may be a fan or other ventilation device. The ventilation assembly 40 and the case 10 may be disposed at a spaced apart position, or the ventilation assembly 40 and the case 10 may be disposed to be fixed with respect to each other.

In some embodiments, referring to FIG. 1, the housing 10 has a thermal barrier 16. The thermal insulation layer 16 is arranged to enable the box body 10 to have a good thermal insulation effect, and the outer wall of the box body 10 is close to the outside temperature. The thermal barrier 16 may be a polyurethane hard foam layer, an ultrafine glass fiber cotton layer, or the like. The case 10 further has a reinforcing layer, which may be a metal layer or a plastic layer, disposed outside the heat insulating layer 16 to improve structural strength.

In some embodiments, referring to fig. 1, a temperature sensor 61 is provided in the case 10 for measuring the internal temperature of the accommodating chamber 11. The actual temperature inside the accommodating chamber 11 is measured by the temperature sensor 61, so that the temperature change assembly 20 can be conveniently adjusted to cool or heat the inside of the accommodating chamber 11, thereby achieving the target temperature.

In some embodiments, the temperature sensor 61 is electrically connected to a processor, which is electrically connected to the temperature change assembly 20. The temperature sensor 61, processor and temperature change assembly 20 combine to form a closed loop temperature control system that maintains the temperature within the enclosure 10 at a target temperature, which is a conventional temperature regulation technique. The temperature sensor 61 measures the actual temperature inside the accommodating chamber 11, and the processor calculates the actual temperature obtained by the temperature sensor 61 and a preset target temperature to determine that cooling or heating is required to drive the semiconductor cooling fin to cool or heat the inside of the accommodating chamber 11, or drives the vortex tube 23 and the control valve to input cool air cooling or input hot air heating into the inside of the accommodating chamber 11, thereby maintaining the temperature inside the accommodating chamber 11 at the target temperature.

In some embodiments, according to the actual temperature obtained by the temperature sensor 61 and the preset target temperature, the need of refrigeration or heating is determined manually, the direct current size and direction of the semiconductor refrigeration sheet are adjusted manually to enable the semiconductor refrigeration sheet to refrigerate or heat the inside of the accommodating cavity 11, or the vortex tube 23 and the control valve are adjusted manually to input cold air refrigeration or hot air heating into the inside of the accommodating cavity 11, so that the temperature inside the accommodating cavity 11 tends to the target temperature.

In some embodiments, referring to fig. 1, a humidity sensor 62 is provided within the housing 10 for measuring the internal humidity of the receiving chamber 11. Humidity in the accommodating chamber 11 can be detected by the humidity sensor 62, and whether mist in the accommodating chamber 11 disappears can be judged according to the humidity. And when no fog exists, the high-low temperature environment test is started on the to-be-tested piece 1, and the test accuracy of the to-be-tested piece 1 is improved.

Referring to fig. 7, an embodiment of the present application provides a terminal test apparatus, which includes a mobile cart 200 and the above-mentioned temperature generating device 100, where the temperature generating device 100 can be fixed on the mobile cart 200.

The terminal test device provided by the embodiment of the application adopts the temperature generating device 100, and the whole temperature generating device 100 can be arranged smaller, so that the temperature generating device 100 can be conveniently fixed on the mobile vehicle 200. Referring to fig. 1, when the part 1 to be measured is a camera 1a or a terminal with a camera 1a, the part 1 to be measured is disposed on the temperature generating device 100, can move along with the mobile vehicle 200, and can take pictures and photographs of different test objects indoors and outdoors, thereby realizing scene photographing. Compared with the traditional incubator testing device in which the camera shoots through the glass movable door, the terminal testing device in the application has the advantages that the camera 1a shoots an external testing object directly through the opening 12 of the box body 10, so that the function effect testing of shooting and video of the camera 1a is realized, and the shooting scene of a user is simulated more truly. Further, the camera 1a provided in the temperature generating device 100 can realize a test of a full focal length (including a wide angle and a telephoto).

In some embodiments, the mobile cart 200 may be an automated guided vehicle (automated guided vehicle, AGV), which may be referred to as an AGV cart. The AGV has an electromagnetic or optical automatic navigation device, and can travel along a prescribed navigation path. The mobile vehicle 200 may also be another transport vehicle.

In some embodiments, referring to fig. 7, the apparatus further includes a movable assembly 300, the movable assembly 300 has a movable end 301 with multiple degrees of freedom of movement, the movable assembly 300 is mounted on the mobile vehicle 200, and the temperature generating device 100 can be fixed on the movable end 301. The movable end 301 having multiple degrees of freedom can move in three straight directions and three rotational directions. Mounting the temperature generating device 100 at the movable end 301 facilitates fixing the temperature generating device 100 to the mobile vehicle 200 and adjusting the position and orientation of the camera 1a in the temperature generating device 100.

For example, the movable assembly 300 may be an automation device such as a mechanical arm, and the tail end of the mechanical arm is a movable end 301 with multiple degrees of freedom motion, and the temperature generating device 100 may be clamped and fixed by the tail end of the mechanical arm. This solution facilitates the fixing of the temperature generating device 100 to the movable assembly 300 and can facilitate the adjustment of the position and orientation of the camera 1a in the temperature generating device 100.

Referring to fig. 8, an embodiment of the present application provides a terminal test apparatus, which includes a dummy finger 400 and the above-mentioned temperature generating device 100, wherein the dummy finger 400 can extend into the accommodating cavity 11 to contact the part 1 to be tested in the accommodating cavity 11.

When the piece 1 to be tested touches the touch display screen 1b, the contact 401 of the analog finger 400 may be made of a conductive material, so that when the contact 401 contacts the touch display screen 1b of the terminal, the trigger effect may be achieved similar to that of clicking or sliding the touch display screen 1b by a real finger.

According to the terminal test equipment provided by the embodiment of the application, when the piece 1 to be tested is the touch display screen 1b, the simulated finger piece 400 is adopted to extend into the accommodating cavity 11 from the opening 12 of the box body 10 to click or slide the touch display screen 1b, so that the operation of a user on the touch display screen 1b is simulated, the display effect of the touch display screen 1b during man-machine interaction can be observed, and whether the touch display screen 1b has faults at high and low temperatures is judged.

In some embodiments, referring to fig. 8, the mobile assembly 500 further includes a mobile end 501 of the mobile assembly 500 having multiple degrees of freedom motion, the simulated finger 400 is mounted on the mobile end 501, and the mobile end 501 is used to drive the simulated finger 400 to move.

The movement assembly drives the simulated finger 400 to move, so that clicking or sliding operation of the touch display screen 1b when a user uses the terminal is simulated. For example, the moving end 501 having the motion with multiple degrees of freedom may move along three straight directions, so as to simulate the clicking or sliding operation of the user on the touch display screen 1 b. The moving assembly 500 may be a conventional three-dimensional moving platform, and the moving end 501 may implement movement in three directions X, Y, Z.

In some embodiments, referring to fig. 8, the method further includes displaying a vision sensor 600, where the vision sensor 600 and the finger-simulating piece 400 are fixed relative to each other, and displaying a vision sensor 600 for photographing the piece 1 to be measured. When the object 1 to be measured is the display screen 1b, the display effect of the display screen 1b can be more accurately obtained by displaying the vision sensor 600.

For example, the display vision sensor 600 may be a color level meter, which can distinguish the difference degree between the display screen 1b presented color and the actual color, and the smaller the difference degree is, the more accurate the color of the display screen 1b is, so as to accurately check the display state of the display screen 1b in the high-low temperature environment. The display vision sensor 600 may also be of other types.

Finally, it should be noted that: the foregoing is merely illustrative of specific embodiments of the present application, and the scope of the present application is not limited thereto, but any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (12)

1. A temperature generating device, comprising: the box body, the temperature change component and the air curtain component;

the box body is provided with a containing cavity and an opening which are communicated, and the containing cavity can contain a piece to be tested;

the temperature change assembly is provided with a heating part and a refrigerating part, the heating part and/or the refrigerating part is arranged towards the inside of the accommodating cavity, the heating part is used for giving out heat to the inside of the accommodating cavity, and the refrigerating part is used for absorbing heat to the inside of the accommodating cavity;

the air curtain component is used for generating an air curtain at the opening so as to separate the inner air flow of the accommodating cavity from the outer air flow of the box body.

2. The temperature generating device according to claim 1, wherein a stage for fixing the part to be measured is detachably mounted in the case.

3. The temperature generator of claim 1, wherein the temperature change assembly comprises a first semiconductor refrigeration sheet having oppositely disposed first hot and first cold ends and a second semiconductor refrigeration sheet having oppositely disposed second hot and second cold ends, the first hot end being disposed as the heating portion and toward the interior of the receiving cavity and the second cold end being disposed as the cooling portion and toward the interior of the receiving cavity;

Or, the temperature change component comprises a first semiconductor refrigeration sheet, the first semiconductor refrigeration sheet is provided with a first hot end and a first cold end which are oppositely arranged, the first hot end is used as the heating part, the first cold end is used as the refrigeration part, and the first hot end and the first cold end are selectively arranged towards the inside of the accommodating cavity.

4. The temperature generating device of claim 1, wherein the temperature varying assembly comprises a vortex tube, a first channel, a second channel, a first control valve, and a second control valve;

the vortex tube is provided with an input end, a hot air end and a cold air end which are communicated with each other, wherein the input end is used for introducing compressed air, the hot air end is used for outputting hot air, and the cold air end is used for outputting cold air;

the hot air end is communicated with the accommodating cavity through the first channel, a first control valve is arranged on the first channel, and the first channel is used as a heating part;

the cold air end is communicated with the accommodating cavity through the second channel, a second control valve is arranged on the second channel, and the second channel is used as a refrigerating part.

5. The temperature generator according to any one of claims 1 to 4, wherein the air curtain assembly is located outside the housing, the housing having a conduit, a first port of the conduit being connected to an output end of the air curtain assembly, a second port of the conduit being disposed toward the opening.

6. The temperature generating device of any one of claims 1 to 4, wherein the housing has an air duct, the air duct being in communication with the receiving chamber, the temperature generating device further comprising a ventilation assembly, an air outlet end of the ventilation assembly being in communication with the air duct.

7. The temperature generating device according to any one of claims 1 to 4, wherein the case has a heat insulating layer;

and/or a temperature sensor is arranged in the box body and used for measuring the internal temperature of the accommodating cavity;

and/or a humidity sensor is arranged in the box body and used for measuring the internal humidity of the accommodating cavity;

and/or the air curtain assembly comprises a compression fan or an air compressor.

8. A terminal test device comprising a mobile vehicle and a temperature generating device according to any one of claims 1 to 7, said temperature generating device being fixable to said mobile vehicle.

9. The terminal test device of claim 8, further comprising a movable assembly having a movable end with multiple degrees of freedom of movement, the movable assembly being mounted on the cart, the temperature generating means being fixable to the movable end.

10. A terminal test device comprising a simulated finger element and a temperature generating device according to any one of claims 1 to 7, the simulated finger element being capable of extending into the receiving chamber to contact a part to be tested in the receiving chamber.

11. The terminal test device of claim 10, further comprising a moving assembly having a moving end with multiple degrees of freedom of movement, the simulated finger being mounted on the moving end, the moving end for moving the simulated finger.

12. The terminal test device according to claim 10 or 11, further comprising a display vision sensor, the display vision sensor and the analog finger piece being fixedly arranged with respect to each other, the display vision sensor being for photographing the piece to be tested.