CN207650285U - Electronic component low temperature electrical performance testing device - Google Patents
Electronic component low temperature electrical performance testing device Download PDFInfo
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- CN207650285U CN207650285U CN201721350534.2U CN201721350534U CN207650285U CN 207650285 U CN207650285 U CN 207650285U CN 201721350534 U CN201721350534 U CN 201721350534U CN 207650285 U CN207650285 U CN 207650285U
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Abstract
本实用新型公开了一种电子元器件低温电学性能测试装置，包括：低温测试杆，设有走线管，走线管中间设有密封组件；测量电路装置一端设待测电子元器件连接装置，另一端设测量仪器连接头，待测电子元器件连接装置设在低温测试杆底端，测量仪器连接头设在低温测试杆顶端，待测电子元器件连接装置与测量仪器连接头经穿设在低温测试杆的走线管内的线缆电气连接，待测电子元器件连接装置设有连接待测电子元器件的接口；测量仪器，与设在低温测试杆顶端的测量仪器连接头电气连接。该测试装置不仅接线简单，便于待测电子元器件固定，也能保证连接点更稳固，也方便测试液氮低温环境的密封以及测试端与测试仪器连接端的隔离，保证测试效果，提升测试效率。
The utility model discloses a low-temperature electrical performance testing device for electronic components, which comprises: a low-temperature test rod, which is provided with a wiring tube, and a sealing assembly is arranged in the middle of the wiring tube; one end of the measuring circuit device is provided with a connecting device for electronic components to be tested, The other end is provided with a connecting head of the measuring instrument, the connecting device of the electronic components to be tested is set at the bottom of the low-temperature test rod, the connecting head of the measuring instrument is set at the top of the low-temperature testing rod, and the connecting device of the electronic components to be tested and the connecting head of the measuring instrument are set at the bottom of the low-temperature test rod. The cable in the wire tube of the low temperature test rod is electrically connected, and the electronic component connection device to be tested is provided with an interface for connecting the electronic component to be tested; the measuring instrument is electrically connected to the measuring instrument connector on the top of the low temperature test rod. The test device is not only easy to connect, it is convenient to fix the electronic components to be tested, and it can also ensure that the connection point is more stable. It is also convenient to test the sealing of the liquid nitrogen low temperature environment and the isolation of the test end and the test instrument connection end, ensuring the test effect and improving the test efficiency.
Description
Technical Field
The utility model relates to an electronic components electrical property test field especially relates to an electronic components low temperature electrical property testing arrangement.
Background
In the production research, the electrical characteristics of some electronic components at extremely low temperature often need to be measured, and various external test devices (such as voltage sources, current sources, signal sources, multimeters, semiconductor characteristic testers and the like) are required outside the test device. The testing device is connected with the element to be tested through the enameled wire and the like, the performance of the element is tested, and the electrical properties of resistance, capacitance, element characteristic curve and the like under the low-temperature condition are obtained.
The existing testing device has the problems of complex wiring, difficult fixation of a component to be tested, complex measuring process, signal transmission loss, insufficient soldering sealing and the like, and the patent application of the Chinese patent application No. CN104820116A introduces a connecting device and a measuring method for measuring a semiconductor device at low temperature, and the connecting device and the measuring method use elastic sheets and bolts to ensure good contact of electrodes and use flat cables for connection. However, such test devices do not involve sealing problems, require separate machining of the connection device and the fine structure and require a certain experience to operate.
SUMMERY OF THE UTILITY MODEL
Based on the problem that prior art exists, the utility model aims at providing an electronic components low temperature electricity capability test device can solve current electronic components and parts and the bad problem of test equipment connection that awaits measuring, reduces the welding frequency in the testing process, avoids high frequency to change the electronic components that await measuring, improves tester's the efficiency of awaiting measuring, reduces the work degree of difficulty and the requirement of low temperature test.
The utility model aims at realizing through the following technical scheme:
the utility model discloses embodiment provides an electronic components low temperature electricity capability test device, include:
the low-temperature test rod, the measurement circuit device and the measurement instrument; wherein,
the low-temperature test rod is provided with a wiring pipe, and the middle part of the wiring pipe is provided with a sealing assembly;
the device comprises a measuring circuit device, a low-temperature testing rod, a measuring instrument connector, a cable and a connecting device, wherein one end of the measuring circuit device is provided with the connecting device of an electronic component to be measured, the other end of the measuring circuit device is provided with the measuring instrument connector, the connecting device of the electronic component to be measured is arranged at the bottom end of the low-temperature testing rod, the measuring instrument connector is arranged at the top end of the low-temperature testing rod, the connecting device of the electronic component to be measured and the measuring instrument connector are electrically connected through the;
and the measuring instrument is electrically connected with a measuring instrument connector arranged at the top end of the low-temperature testing rod by the measuring circuit device.
By the foregoing the utility model provides a technical scheme can see out, the embodiment of the utility model provides an electronic components low temperature electricity capability test device, its beneficial effect is:
through setting up the low temperature test pole that has away spool and seal assembly for the electronic components connecting device and the measuring instrument connector that await measuring of measuring circuit device can be established at low temperature test pole both ends separately, connecting cable between them wears to establish in walking the spool, and not only the wiring is simple, and the electronic components's that are convenient for await measuring is fixed, and it is more firm also to guarantee the tie point, has also made things convenient for the sealed and test end of test liquid nitrogen low temperature environment and the isolation of test instrument link, guarantees the test effect, promotes efficiency of software testing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a low-temperature testing rod of a testing device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an IC locking seat of a testing apparatus according to an embodiment of the present invention;
fig. 3 is a schematic side view of an IC locking seat of a testing apparatus according to an embodiment of the present invention;
in the figure: 1-box wall; 2-a wiring pipe; 3-box cover; 4-sealing plug; and 5, pressing a sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the specific contents of the present invention, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Details not described in the embodiments of the present invention belong to the prior art known to those skilled in the art.
As shown in fig. 1 to 3, the embodiment of the utility model provides an electronic components low temperature electricity capability test device, can conveniently measure electronic components's electricity performance at low temperature, solve the bad problem of connection of the present electronic components and test equipment that await measuring, reduce the welding frequency in the testing process, avoid high frequency to change the electronic components that await measuring, improve tester's efficiency of awaiting measuring, reduce the work degree of difficulty and the requirement of low temperature test, include:
the low-temperature test rod, the measurement circuit device and the measurement instrument; wherein,
the low-temperature test rod is provided with a wiring pipe, and the middle part of the wiring pipe is provided with a sealing assembly;
the device comprises a measuring circuit device, a low-temperature testing rod, a measuring instrument connector, a connecting device for the electronic component to be measured, a cable and a connector for the electronic component to be measured, wherein the connecting device for the electronic component to be measured is arranged at one end of the measuring circuit device, the connecting device for the electronic component to be measured is arranged at the other end of the measuring circuit device, the connecting device for the electronic component to be measured is arranged at the bottom end of the low-temperature testing rod, the measuring instrument connector is arranged at the top end of the low-;
and the measuring instrument is electrically connected with a measuring instrument connector arranged at the top end of the low-temperature testing rod by the measuring circuit device.
In the testing device, two ends of the cable are electrically connected with the electronic component connecting device to be tested and the measuring instrument connector respectively through welding and fixing.
Among the above-mentioned testing arrangement, the low temperature test bar includes:
the top box body, the wiring pipe and the sealing assembly; wherein,
the top box body is formed by connecting four box walls and two box covers, and the two box covers are provided with a plurality of holes for arranging connectors of measuring instruments; the bottom of the box wall is provided with a connector which is connected with the wiring pipe in a sealing way;
the top end of the wiring pipe is hermetically connected with the box wall through a connector at the bottom of the box wall;
the sealing assembly consists of a pressing sleeve, a sealing plug and a rubber ring arranged between the pressing sleeve and the sealing plug, and the pressing sleeve and the sealing plug are connected by threads.
In the testing device, the box wall and the box cover of the top box body are both made of corrosion-resistant and low-temperature-resistant metal alloy;
the sealing plug is made of low-temperature-resistant plastic, and the outer diameter of the sealing plug is matched with the caliber of the opening of the Dewar flask;
the wiring pipe is a pipeline made of corrosion-resistant and low-temperature-resistant metal alloy;
the pressing sleeve is made of corrosion-resistant and low-temperature-resistant metal alloy.
In the above-mentioned test apparatus, in the measuring circuit device,
the electronic component connecting device to be tested consists of an IC locking seat and an adapter plate;
the measuring instrument connector adopts a BNC female head;
the cable adopts enameled wire and BNC cable.
Among the above-mentioned testing arrangement, the measuring instrument connector still includes: and (4) converting BNC into banana heads.
In the above test apparatus, the measuring instrument includes:
various measuring instruments and a computer which is electrically connected with the measuring instruments and controls the operation labview control system of each measuring instrument.
In the above-described test apparatus, the various measuring instruments include: one or more of a signal source, an oscilloscope, an ammeter and a multimeter.
The embodiment of the utility model provides a still provide an electronic components low temperature electricity capability test method, its characterized in that adopts foretell testing arrangement, including following step:
connecting the electronic component to be tested to a connecting device of the electronic component to be tested of a measuring circuit device of the testing device;
placing an electronic component connecting device to be tested at the bottom end of a low-temperature testing rod of a testing device and an electronic component to be tested into a Dewar tank filled with liquid nitrogen, sealing a tank opening of the Dewar tank by a sealing assembly of the low-temperature testing rod, and supporting and keeping the low-temperature testing rod to be arranged on the tank opening of the Dewar tank in an upright state by the sealing assembly;
and (3) electrically connecting a measuring instrument connector at the top end of the low-temperature test rod with a measuring instrument to electrically connect the measuring instrument with the electronic component to be measured, and measuring the electrical parameters of the electronic component to be measured in the liquid nitrogen low-temperature environment by the measuring instrument to determine the low-temperature electrical performance of the electronic component to be measured.
The utility model discloses a testing arrangement has the low temperature test bar of walking spool and seal assembly through the setting for measuring circuit device's the electronic components connecting device that awaits measuring and measuring instrument connector can be established at low temperature test bar both ends separately, connecting cable between them wears to establish in walking the spool, it is simple not only to work a telephone switchboard, the electronic components's that are convenient for await measuring fixed, also can guarantee that the tie point is more firm, also made things convenient for the sealed and test end of test liquid nitrogen low temperature environment and the isolation of test instrument link, guarantee test effect, promote efficiency of software testing.
The embodiments of the present invention will be described in further detail below.
As shown in fig. 1 to 3, the present embodiment provides a testing apparatus for measuring electrical performance of an electronic component at low temperature, comprising: a low temperature test rod, a measurement circuit device and a test instrument; the electronic component to be tested is placed into an IC locking seat of a measuring circuit device at the lower end of the low-temperature testing rod, the testing instrument is connected with a testing instrument connector of the measuring circuit device on the low-temperature testing rod through a BNC cable, interconnection of the electronic component to be tested and the testing instrument is achieved, the environment to be tested can be placed into a liquid nitrogen environment, and the testing instrument is controlled to finish measurement through a PC running labview control system.
Among the above-mentioned testing arrangement, the low temperature test bar includes: the wire feeding pipe, the pressing sleeve, the sealing plug and the top box body; the wire running pipe and the pressing sleeve play roles in supporting connection and placing the enameled wire, and are made of corrosion-resistant and low-temperature-resistant metal alloys, such as 304 stainless steel alloy and aluminum alloy.
The sealing plug is made of low-temperature-resistant plastic such as polytetrafluoroethylene according to the opening caliber of the Dewar flask, and the sealing plug is in threaded connection with the pressing sleeve.
The top box body of the low-temperature test rod consists of a box wall box cover and is made of corrosion-resistant and low-temperature-resistant metal alloy. The fixed position of the box wall and the box cover is provided with a screw hole, and the two box covers are provided with holes for placing BNC female heads and can be used for placing a plurality of female heads. The bottom of the box wall is provided with a wiring pipe interface.
The measurement circuit arrangement comprises: IC locking seat, keysets, BNC female head, enameled wire, BNC cable and BNC commentaries on classics banana head, wherein IC locking seat can be one or more.
The test instrument includes: various measuring instruments and a PC for controlling the measuring instruments operate a labview control system to perform power supply, signal input and data reading processing.
Specifically, in the testing device, the structure of the low-temperature testing rod is as shown in fig. 1, one end of the wiring pipe 2 is placed into a small reserved hole in the box wall 1 in a flush manner for welding, so that the box wall 1 is hermetically connected with the wiring pipe 2; the pressing sleeve 5 and the sealing plug 4 are sleeved from the other end of the wiring pipe 2, a rubber ring with a proper size is placed between the pressing sleeve 5 and the sealing plug 4 to play a role in sealing and fixing, and the pressing sleeve 5, the rubber ring and the sealing plug 4 are pushed to a proper position on the wiring pipe 2 to be assembled. A BNC female head is arranged on a hole reserved in the box cover 3, and the BNC female head is numbered; penetrate away spool 2 with many enameled wires, the female first terminal binding post welding of enameled wire one end and BNC, the enameled wire other end is wearing out in walking the 2 lower parts of spool, with the corresponding pin welding of IC locking seat, realizes the female first and the IC locking seat pin interconnection of BNC of uniform numbering, passes through the screw fixation with the tank wall 1 and the case lid 3 of top box.
The electronic component to be tested can be directly placed on the IC locking seat, such as a dual in-line packaged component, an in-line resistor and the like, and is placed on the IC locking seat for fixing; and recording the connection relation between each pin of the electronic component to be tested and the IC locking base pin (BNC female head).
The liquid nitrogen environment is put into IC locking seat and low temperature test rod bottom, and the sealing plug 4 is put into the dewar jar mouth and is sealed, presses 5 parts of cover simultaneously and contacts in jar mouth top, plays sealed effect of supporting, keeps the upright state of low temperature test rod.
One end of a BNC cable is connected with a measuring instrument, such as a signal source, an oscilloscope, an ammeter, a universal meter and other instruments, wherein the signal source oscilloscope and other instruments can be directly connected by using the BNC cable, the ammeter, other instruments and other equipment can not be directly connected, and the BNC cable can be connected by using a BNC-to-banana head; the other end is connected with the corresponding BNC female connector according to requirements, so that the interconnection between the test instrument and each pin of the electronic component to be tested is realized.
And after the electronic components are cooled in a low-temperature environment, measuring by using test equipment.
The labview program control device is used on a PC to supply power, input signals, measure and read data, and the like.
The electronic component to be tested can not be directly placed on the IC locking seat, for example, the components packaged in a surface mount type and PLCC (plastic leaded chip package) mode are welded on the adapter plate, then the adapter plate is fixed on the IC locking seat, and the connection relation between each pin of the electronic component to be tested and the pin (BNC female connector) of the IC locking seat is recorded. The test method has been described in detail above and will not be described herein.
Among the above-mentioned testing arrangement, leave certain space between sealing plug and the line pipe of walking, also leave the space on the box of top, the discharge of the nitrogen gas of being convenient for dewar jar internal pressure is not too high, guarantees tester's personal safety. When in test, the temperature of the part of the low-temperature test rod exposed in the air is within the range accepted by human body, and the tester can not cause frostbite when accidentally touching the low-temperature test rod for a short time.
In the measurement of a plurality of components with fewer pins, the components can be simultaneously placed on an IC locking seat, and the corresponding relation between the pins and a BNC female head is recorded; when the test element needs to be replaced, the connection of the BNC cable can be replaced outside, the IC locking seat does not need to be taken out again, the working efficiency of testers is improved, the energy loss is reduced, and the consistency of a low-temperature test environment is ensured.
And a BNC coaxial cable is used outside, so that signal transmission loss and interference are reduced.
The test device has certain expandability, and the number of BNC female heads and the number of pins of IC locking seats can be increased or reduced as required. If electronic components with more pins need to be tested, corresponding BNC interfaces can be manufactured on the top box body, and extra IC locking seats are arranged at the bottom of the routing tube, so that function expansion is realized.
Various measuring instruments of the measuring instrument can realize remote control by using a labview control system operated by a computer. The Labview control system can conveniently increase and decrease instrument control programs, and is convenient for testers to realize changeable test plans.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A low-temperature electrical performance testing device for electronic components is characterized by comprising:
the low-temperature test rod, the measurement circuit device and the measurement instrument; wherein,
the low-temperature test rod is provided with a wiring pipe, and the middle part of the wiring pipe is provided with a sealing assembly;
the device comprises a measuring circuit device, a low-temperature testing rod, a measuring instrument connector, a cable and a connecting device, wherein one end of the measuring circuit device is provided with the connecting device of an electronic component to be measured, the other end of the measuring circuit device is provided with the measuring instrument connector, the connecting device of the electronic component to be measured is arranged at the bottom end of the low-temperature testing rod, the measuring instrument connector is arranged at the top end of the low-temperature testing rod, the connecting device of the electronic component to be measured and the measuring instrument connector are electrically connected through the;
and the measuring instrument is electrically connected with a measuring instrument connector arranged at the top end of the low-temperature testing rod by the measuring circuit device.
2. The device for testing the low-temperature electrical performance of the electronic component as claimed in claim 1, wherein two ends of the cable are electrically connected with the electronic component connecting device to be tested and the measuring instrument connector respectively through welding and fixing.
3. The device for testing the low-temperature electrical performance of the electronic component as claimed in claim 1, wherein the low-temperature testing rod comprises:
the top box body, the wiring pipe and the sealing assembly; wherein,
the top box body is formed by connecting four box walls and two box covers, and the two box covers are provided with a plurality of holes for arranging the measuring instrument connectors; the bottom of the box wall is provided with a connector which is connected with the wiring pipe in a sealing way;
the top end of the wiring pipe is hermetically connected with the box wall through a connector at the bottom of the box wall;
the sealing assembly consists of a pressing sleeve, a sealing plug and a rubber ring arranged between the pressing sleeve and the sealing plug, and the pressing sleeve and the sealing plug are connected by threads.
4. The device for testing the low-temperature electrical properties of electronic components as claimed in claim 3,
the box wall and the box cover of the top box body are both made of corrosion-resistant and low-temperature-resistant metal alloy;
the sealing plug is made of low-temperature-resistant plastic, and the outer diameter of the sealing plug is matched with the caliber of the opening of the Dewar flask;
the wiring pipe is a pipeline made of corrosion-resistant and low-temperature-resistant metal alloy;
the pressing sleeve is made of corrosion-resistant and low-temperature-resistant metal alloy.
5. The device for testing the low-temperature electrical performance of the electronic component as claimed in any one of claims 1 to 3, wherein in the measuring circuit device,
the electronic component connecting device to be tested consists of an IC locking seat and an adapter plate;
the measuring instrument connector adopts a BNC female head;
the cable adopts enameled wire and BNC cable.
6. The device for testing the low-temperature electrical performance of the electronic component as claimed in claim 5, wherein the measuring instrument connector further comprises: and (4) converting BNC into banana heads.
7. The device for testing the low-temperature electrical performance of the electronic component as claimed in any one of claims 1 to 3, wherein the measuring instrument comprises:
various measuring instruments and a computer which is electrically connected with the measuring instruments and controls the operation labview control system of each measuring instrument.
8. The device for testing the low-temperature electrical performance of electronic components as claimed in claim 7, wherein the various measuring instruments comprise: one or more of a signal source, an oscilloscope, an ammeter and a multimeter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721350534.2U CN207650285U (en) | 2017-10-19 | 2017-10-19 | Electronic component low temperature electrical performance testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721350534.2U CN207650285U (en) | 2017-10-19 | 2017-10-19 | Electronic component low temperature electrical performance testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107589333A (en) * | 2017-10-19 | 2018-01-16 | 中国科学技术大学 | Electronic component low temperature electrical performance testing device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107589333A (en) * | 2017-10-19 | 2018-01-16 | 中国科学技术大学 | Electronic component low temperature electrical performance testing device and method |
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