CN110763978A - Method for protecting integrated circuit test connecting line - Google Patents

Method for protecting integrated circuit test connecting line Download PDF

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Publication number
CN110763978A
CN110763978A CN201910977693.2A CN201910977693A CN110763978A CN 110763978 A CN110763978 A CN 110763978A CN 201910977693 A CN201910977693 A CN 201910977693A CN 110763978 A CN110763978 A CN 110763978A
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CN
China
Prior art keywords
protective sleeve
integrated circuit
connecting wire
protective
detection
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Pending
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CN201910977693.2A
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Chinese (zh)
Inventor
向彦瑾
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Sichuan Howell Information Technology Co Ltd
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Sichuan Howell Information Technology Co Ltd
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Priority to CN201910977693.2A priority Critical patent/CN110763978A/en
Publication of CN110763978A publication Critical patent/CN110763978A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28Testing of electronic circuits, e.g. by signal tracer
    • G01R31/2851Testing of integrated circuits [IC]
    • G01R31/2884Testing of integrated circuits [IC] using dedicated test connectors, test elements or test circuits on the IC under test

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)

Abstract

The invention discloses a method for protecting an integrated circuit test connecting line, which comprises detection equipment and protection equipment, wherein the integrated circuit is fixedly connected in the detection equipment, and the method comprises the following steps: the method comprises the steps of firstly, enabling a connecting wire to penetrate through a protective sleeve, arranging the connecting wire, secondly, enabling the protective sleeve and the connecting wire to penetrate through a protective device, enabling two ends of the connecting wire to be connected with a detection device and other devices, thirdly, connecting the protective device with the detection device through a cable, then resetting and debugging the protective device, and fourthly, observing the protective device every 15-30 s when detecting the integrated circuit, and relates to the technical field of integrated circuit testing. According to the method for protecting the integrated circuit testing connecting line, the protective sleeve is sleeved on the outer side of the connecting line, the part, exposed outside, of the connecting line is well protected, and the problems that an electric wire is wound, overlapped or damaged by external force and the like can be prevented.

Description

Method for protecting integrated circuit test connecting line
Technical Field
The invention relates to the technical field of integrated circuit testing, in particular to a method for protecting an integrated circuit testing connection line.
Background
The integrated circuit is a miniature electronic device or component, and adopts a certain process to interconnect the elements of transistor, resistor, capacitor and inductor, etc. required in a circuit and the wiring together, and make them on a small piece or several small pieces of semiconductor wafer or medium substrate, then package them in a tube shell to form the miniature structure with required circuit function; all the components are structurally integrated, so that electronic components are greatly advanced towards microminiaturization, low power consumption, intellectualization and high reliability, a detection process is needed in the production process of integrated circuits, and when the integrated circuits are detected, some manufacturers can use automatic test equipment to be connected with an automatic test probe station or an automatic sorting machine through a connecting wire.
Chinese patent discloses a method for protecting an integrated circuit test connection line (publication No. CN107064566A), which installs a protection device on the connection line of an automatic test equipment, and then the protection device is connected with an automatic probe station; the protection device is equipped with temperature and humidity sensor, protection device monitoring humiture, when humiture exceeds standard, the sensor sends out to cry, protection device detects the connecting wire and links to each other with it equipment and whether be connected.
When using, the existing connecting line has a large space between the detection devices, so that the protection range of the connecting line by the protection devices is limited, when using, the connecting line needs to be well laid, the winding of the connecting line is avoided, and only the detection of the connecting line by the temperature and humidity sensor can lead to single detection data, which is not beneficial to the protection of the connecting line.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for protecting an integrated circuit test connecting line, which solves the problems that when the existing connecting line is used, if the distance between detection devices is larger, the protection range of the protection device on the connecting line is limited, when the connecting line is used, good wire laying needs to be kept, the connecting line is prevented from being wound together, and the detection of the connecting line only by using a temperature and humidity sensor can lead to single detection data and is not beneficial to the protection of the connecting line.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the method for protecting the integrated circuit test connecting line comprises detection equipment and protection equipment, wherein the integrated circuit is fixedly connected inside the detection equipment, and the method comprises the following steps:
the method comprises the following steps that firstly, connecting wires penetrate through a protective sleeve and are arranged in a row in the protective sleeve, and sealing treatment is carried out on positions where the two ends of the protective sleeve are connected with the connecting wires;
secondly, the protective sleeve and the connecting wire penetrate through the protective equipment, the two ends of the connecting wire are connected with the detection equipment and other equipment, the part of the connecting wire, which is positioned outside the protective sleeve, is installed inside the detection equipment and other equipment, and finally the two ends of the protective sleeve are fixed with the equipment connected with the connecting wire;
connecting the protection equipment and the detection equipment through a cable, resetting and debugging the protection equipment, recording initial information detected by the protection equipment after debugging is finished, comparing the initial information with a standard value, and controlling the error within +/-8%;
and step four, observing the protection equipment every 15-30 s when detecting the integrated circuit, and recording the monitoring information of the protection equipment every 1-3 min.
Preferably, the inside of check out test set includes displacement sensor, smoke transducer and temperature and humidity sensor, the inside of protection equipment includes power module, central processing module, buzzing alarm and display module.
Preferably, the inside of check out test set includes displacement sensor, smoke transducer and temperature and humidity sensor, the inside of protection equipment includes power module, central processing module, buzzing alarm and display module.
Preferably, the output end of the power supply module is electrically connected with the input end of the central processing module, and the output end of the central processing module is electrically connected with the input ends of the buzzer alarm and the display module.
Preferably, the debugging of the protection device further comprises detecting with a buzzer alarm, and actively controlling the buzzer alarm to detect for an interval time of 2s to 4s and a sounding time of 1s and detect for a long time with a sounding time of 5s to 7 s.
Preferably, the protective sleeve is a rubber member, carbon fibers, glass fibers and flame-retardant fibers are inserted into the protective sleeve, and the carbon fibers, the glass fibers and the flame-retardant fibers are twisted together and uniformly arranged in the protective sleeve.
Preferably, the surface of protective sheath is provided with bellied bar position, and the direction that the bar position distributes is the same with the direction that the connecting wire distributes.
Preferably, the equal fixedly connected with connecting block in the outside at protective sheath both ends, the inside of connecting block is evenly seted up threaded hole, the protective sheath passes through bolt and check out test set and all the other equipment fixed connection.
(III) advantageous effects
The invention provides a method for protecting an integrated circuit test connecting line. Compared with the prior art, the method has the following beneficial effects:
(1) the method for protecting the integrated circuit test connecting wire comprises the steps of enabling the connecting wire to penetrate through a protective sleeve and arranging the connecting wire, enabling the connecting wire to be arranged in a row in the protective sleeve, sealing positions where the two ends of the protective sleeve are connected with the connecting wire, enabling the protective sleeve and the connecting wire to penetrate through protective equipment, enabling the two ends of the connecting wire to be connected with detection equipment and other equipment, installing the position, located on the outer side of the protective sleeve, of the connecting wire in the detection equipment and the other equipment, enabling the protective sleeve to be a rubber component, enabling carbon fibers, glass fibers and flame-retardant fibers to penetrate through the inner portion of the protective sleeve, enabling the outer surface of the protective sleeve to be provided with a protruding strip-shaped portion, enabling the distribution direction of the strip-shaped portion to be the same as the distribution direction of the connecting wire, enabling the protective sleeve to be, and can prevent that the electric wire from taking place winding, overlapping or by external force destruction scheduling problem to the protective sheath has good pliability and antifriction, and life is high, and simultaneously and each equipment between stability is high, also can play the effect of support to the electric wire.
(2) The invention can monitor the connection between the integrated circuit and the connecting wire by arranging the displacement sensor at the lower side of the integrated circuit, can prevent the integrated circuit from shaking to cause displacement during detection, prevent the integrated circuit from being dislocated with the connecting wire, and help a user to find problems at the first time, and meanwhile, if the connecting wire is over-high to cause fire, the temperature inside the device needs to be raised for a certain time, the existing temperature and humidity sensor needs to consume time, information cannot be transmitted quickly, and through the smoke sensor, if a fire disaster happens inside the device, smoke can happen, and information can be transmitted at the first time.
(3) The method for protecting the integrated circuit test connecting line comprises the steps of connecting the protection device with the detection device through a cable, resetting and debugging the protection device, recording initial information detected by the protection device after debugging is finished, comparing the initial information with a standard value, controlling the error within +/-8%, observing the protection device once every 15-30 s when detecting the integrated circuit, recording monitoring information of the protection device once every 1-3 min, actively controlling the buzzer alarm to carry out detection with the interval time of 2-4 s and the sounding time of 1s and long-time detection with the sounding time of 5-7 s during debugging of the protection device, debugging the devices and sensors before working, and ensuring that the devices and sensors can normally work, and the information is recorded during working, so that the detection result can be assisted, and the working state of the integrated circuit during testing can be assisted and judged.
Drawings
FIG. 1 is a perspective view of a protective member according to the present invention;
fig. 2 is a connection block diagram of the protection member of the present invention.
In the figure, 1, a detection device; 2. protecting equipment; 3. a protective sleeve; 4. a displacement sensor; 5. a smoke sensor; 6. a temperature and humidity sensor; 7. a power supply module; 8. a central processing module; 9. a buzzer alarm; 10. and a display module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the embodiment of the present invention provides two technical solutions:
example one
A method for protecting an integrated circuit test connecting line comprises a detection device 1 and a protection device 2, wherein the detection device 1 is fixedly connected with an integrated circuit, the detection device 1 comprises a displacement sensor 4, a smoke sensor 5 and a temperature and humidity sensor 6, the displacement sensor 4 is an LWH-0130 model displacement sensor, the smoke sensor 5 is an HCHL-20M model smoke sensor, the temperature and humidity sensor 6 is an RG-1002HT temperature and humidity sensor, the protection device 2 comprises a power module 7, a central processing module 8, a buzzer alarm 9 and a display module 10, the power module 7 is an ES03-S24 model power module, the display module 10 is a 240128B model module, the displacement sensor 4 is fixedly connected to the lower side of the integrated circuit, and output ends of the displacement sensor 4, the smoke sensor 5 and the temperature and humidity sensor 6 are electrically connected with an input end of the central processing module 8, the output end of the power module 7 is electrically connected with the input end of the central processing module 8, the output end of the central processing module 8 is electrically connected with the input ends of the buzzer alarm 9 and the display module 10, and the method comprises the following steps:
the method comprises the following steps that firstly, a connecting line penetrates through a protective sleeve 3, the protective sleeve 3 is a rubber component, carbon fibers, glass fibers and flame-retardant fibers are inserted into the protective sleeve 3 in a penetrating mode, the carbon fibers, the glass fibers and the flame-retardant fibers are twisted together and evenly arranged inside the protective sleeve 3, protruding strip-shaped parts are arranged on the outer surface of the protective sleeve 3, the distribution direction of the strip-shaped parts is the same as that of the connecting line, the connecting line is arranged in a row inside the protective sleeve 3, and sealing treatment is conducted on the positions, connected with the connecting line, of two ends of the protective sleeve 3;
secondly, the protective sleeve 3 and the connecting wire penetrate through the protective device 2, the two ends of the connecting wire are connected with the detection device 1 and other devices, the part of the connecting wire, which is positioned outside the protective sleeve 3, is installed inside the detection device 1 and other devices, and finally the two ends of the protective sleeve 3 are fixed with the devices connected with the connecting wire, the outside of the two ends of the protective sleeve 3 are fixedly connected with connecting blocks, threaded holes are uniformly formed in the connecting blocks, and the protective sleeve 3 is fixedly connected with the detection device 1 and other devices through bolts;
step three, connecting the protection device 2 with the detection device 1 through a cable, resetting and debugging the protection device 2, detecting the protection device 2 with a buzzing alarm 9, actively controlling the buzzing alarm 9 to detect the interval time of 3s and the ringing time of 1s and detect the ringing time of 6s for a long time, recording initial information detected by the protection device 2 after debugging is finished, comparing the initial information with a standard value, and controlling the error to be 5%;
step four, when detecting the integrated circuit, observing the protection device 2 every 25s, and recording the monitoring information of the protection device 2 every 1.5 min;
example two
A method for protecting an integrated circuit test connecting line comprises a detection device 1 and a protection device 2, wherein the detection device 1 is fixedly connected with an integrated circuit, the detection device 1 comprises a displacement sensor 4, a smoke sensor 5 and a temperature and humidity sensor 6, the displacement sensor 4 is an LWH-0130 model displacement sensor, the smoke sensor 5 is an HCHL-20M model smoke sensor, the temperature and humidity sensor 6 is an RG-1002HT temperature and humidity sensor, the protection device 2 comprises a power module 7, a central processing module 8, a buzzer alarm 9 and a display module 10, the power module 7 is an ES03-S24 model power module, the display module 10 is a 240128B model module, the displacement sensor 4 is fixedly connected to the lower side of the integrated circuit, and output ends of the displacement sensor 4, the smoke sensor 5 and the temperature and humidity sensor 6 are electrically connected with an input end of the central processing module 8, the output end of the power module 7 is electrically connected with the input end of the central processing module 8, the output end of the central processing module 8 is electrically connected with the input ends of the buzzer alarm 9 and the display module 10, and the method comprises the following steps:
the method comprises the following steps that firstly, a connecting line penetrates through a protective sleeve 3, the protective sleeve 3 is a rubber component, carbon fibers, glass fibers and flame-retardant fibers are inserted into the protective sleeve 3 in a penetrating mode, the carbon fibers, the glass fibers and the flame-retardant fibers are twisted together and evenly arranged inside the protective sleeve 3, protruding strip-shaped parts are arranged on the outer surface of the protective sleeve 3, the distribution direction of the strip-shaped parts is the same as that of the connecting line, the connecting line is arranged in a row inside the protective sleeve 3, and sealing treatment is conducted on the positions, connected with the connecting line, of two ends of the protective sleeve 3;
secondly, the protective sleeve 3 and the connecting wire penetrate through the protective device 2, the two ends of the connecting wire are connected with the detection device 1 and other devices, the part of the connecting wire, which is positioned outside the protective sleeve 3, is installed inside the detection device 1 and other devices, and finally the two ends of the protective sleeve 3 are fixed with the devices connected with the connecting wire, the outside of the two ends of the protective sleeve 3 are fixedly connected with connecting blocks, threaded holes are uniformly formed in the connecting blocks, and the protective sleeve 3 is fixedly connected with the detection device 1 and other devices through bolts;
step three, connecting the protection device 2 with the detection device 1 through a cable, resetting and debugging the protection device 2, detecting the protection device 2 with a buzzing alarm 9, actively controlling the buzzing alarm 9 to detect the interval time of 4s and the ringing time of 1s and detect the ringing time of 4s for a long time, recording initial information detected by the protection device 2 after debugging is finished, comparing the initial information with a standard value, and controlling the error to be 4%;
and step four, observing the protection device 2 every 30s when detecting the integrated circuit, and recording the monitoring information of the protection device 2 every 1 min.
Example of the implementation
Case one: the protection equipment is debugged before the integrated circuit is tested in a certain factory, the data of the displacement sensor 4 is found to be different from the standard data and the data in the previous tests, the integrated circuit is touched by mistake during the installation to cause the integrated circuit to incline after the detection, the rest equipment is debugged continuously after the integrated circuit is straightened, the test is started after the integrated circuit is all abnormal, a worker observes the protection equipment every 25s, the data is recorded every 1.5min, and the recorded data after the experiment is finished is similar to the data in the previous test.
Case two: a certain factory adopts the method in the second embodiment to test the connecting wire after protecting the connecting wire, when a worker stands up, the worker carelessly touches the device, the distance between the devices is shortened, the connecting wire arches under the protection of the protective sleeve, after the device is reset, the test is normal, the worker observes the protective device every 30s, and records data every 1min, after the realization is finished, the data abnormality of the temperature and humidity sensor 6 is found, but the degree of passing the buzzer alarm 9 is not reached, the inspection is carried out, and the current fluctuation is caused when the detection is found.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The method for protecting the integrated circuit test connecting line comprises a detection device (1) and a protection device (2), wherein the integrated circuit is fixedly connected inside the detection device (1), and the method is characterized in that: the method comprises the following steps:
the method comprises the following steps that firstly, connecting wires penetrate through a protective sleeve (3), the connecting wires are arranged in a row in the protective sleeve (3), and sealing treatment is carried out on positions where the two ends of the protective sleeve (3) are connected with the connecting wires;
secondly, the protective sleeve (3) and the connecting wire penetrate through the protective device (2), two ends of the connecting wire are connected with the detection device (1) and other devices, the part of the connecting wire, which is positioned on the outer side of the protective sleeve (3), is installed in the detection device (1) and other devices, and finally two ends of the protective sleeve (3) are fixed with the devices connected with the connecting wire;
thirdly, connecting the protection device (2) with the detection device (1) through a cable, resetting and debugging the protection device (2), recording initial information detected by the protection device (2) after debugging is finished, comparing the initial information with a standard value, and controlling the error within +/-8%;
and step four, observing the protection equipment (2) every 15-30 s when detecting the integrated circuit, and recording the monitoring information of the protection equipment (2) every 1-3 min.
2. The method of claim 1, wherein the method further comprises: the inside of check out test set (1) includes displacement sensor (4), smoke transducer (5) and temperature and humidity sensor (6), the inside of protective apparatus (2) includes power module (7), central processing module (8), buzzing siren (9) and display module (10).
3. The method of claim 2, wherein the method further comprises: displacement sensor (4) fixed connection is in integrated circuit's downside, and displacement sensor (4), smoke transducer (5) and temperature and humidity sensor's (6) output all with the input electric connection of central processing module (8).
4. A method of protecting integrated circuit test connections as claimed in claim 3, wherein: the output end of the power supply module (7) is electrically connected with the input end of the central processing module (8), and the output end of the central processing module (8) is electrically connected with the input ends of the buzzer alarm (9) and the display module (10).
5. The method of claim 1, wherein the method further comprises: in the debugging of the protection device (2), the method also comprises the detection of a buzzer alarm (9), and actively controls the buzzer alarm (9) to detect the interval time of 2 s-4 s and the sounding time of 1s and detect the sounding time of 5 s-7 s for a long time.
6. The method of claim 1, wherein the method further comprises: the protective sleeve (3) is a rubber component, carbon fibers, glass fibers and flame-retardant fibers are inserted into the protective sleeve (3) in a penetrating mode, the carbon fibers, the glass fibers and the flame-retardant fibers are mixed and twisted together, and the carbon fibers, the glass fibers and the flame-retardant fibers are uniformly arranged in the protective sleeve (3).
7. The method of claim 6, wherein the method further comprises: the surface of protective sheath (3) is provided with bellied bar position, and the direction that the bar position distributes is the same with the direction that the connecting wire distributes.
8. The method of claim 7, wherein the method further comprises: the protective sleeve is characterized in that connecting blocks are fixedly connected to the outer sides of two ends of the protective sleeve (3), threaded holes are evenly formed in the connecting blocks, and the protective sleeve (3) is fixedly connected with the detection equipment (1) and other equipment through bolts.
CN201910977693.2A 2019-10-15 2019-10-15 Method for protecting integrated circuit test connecting line Pending CN110763978A (en)

Priority Applications (1)

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CN201910977693.2A CN110763978A (en) 2019-10-15 2019-10-15 Method for protecting integrated circuit test connecting line

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Application Number Priority Date Filing Date Title
CN201910977693.2A CN110763978A (en) 2019-10-15 2019-10-15 Method for protecting integrated circuit test connecting line

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Citations (14)

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Publication number Priority date Publication date Assignee Title
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CN200944447Y (en) * 2006-06-27 2007-09-05 达昌电子科技(苏州)有限公司 Electrical connector combination
CN101236039A (en) * 2008-02-15 2008-08-06 孙海潮 Parallel flow heat converter dedicated for air conditioner
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CN203350389U (en) * 2013-07-31 2013-12-18 广东易事特电源股份有限公司 Flat cable detecting device
CN103474800A (en) * 2013-09-05 2013-12-25 深圳市得润电子股份有限公司 USB connecting line
CN103794272A (en) * 2013-12-17 2014-05-14 国家电网公司 Special cable of graph-digital-analog integrated grid data management platform
CN104764973A (en) * 2015-04-03 2015-07-08 苏州经贸职业技术学院 Induction type wiring harness detection system and method
CN106093694A (en) * 2016-06-08 2016-11-09 北京小米移动软件有限公司 Connecting line, the method and device of connection status of detection connecting line
CN106199308A (en) * 2016-06-30 2016-12-07 合肥江淮新发汽车有限公司 A kind of Beam Detector
CN107064566A (en) * 2017-06-12 2017-08-18 上海华岭集成电路技术股份有限公司 A kind of method for protecting integrated circuit testing connecting line
CN207281197U (en) * 2017-08-15 2018-04-27 上海智大电子有限公司 A kind of winding displacement tester
CN207425685U (en) * 2017-12-05 2018-05-29 厦门市三特兴电子有限公司 A kind of thin film switch of manual dexterity
CN207719568U (en) * 2017-12-15 2018-08-10 昆山可腾电子有限公司 A kind of winding displacement pressing machine

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2511014Y (en) * 2001-12-19 2002-09-11 华硕电脑股份有限公司 Solid connection mechanism of connector
CN200944447Y (en) * 2006-06-27 2007-09-05 达昌电子科技(苏州)有限公司 Electrical connector combination
CN101236039A (en) * 2008-02-15 2008-08-06 孙海潮 Parallel flow heat converter dedicated for air conditioner
CN101907667A (en) * 2010-08-13 2010-12-08 青岛宏达赛耐尔科技股份有限公司 Performance test-bed of high-voltage equipment box
CN203350389U (en) * 2013-07-31 2013-12-18 广东易事特电源股份有限公司 Flat cable detecting device
CN103474800A (en) * 2013-09-05 2013-12-25 深圳市得润电子股份有限公司 USB connecting line
CN103794272A (en) * 2013-12-17 2014-05-14 国家电网公司 Special cable of graph-digital-analog integrated grid data management platform
CN104764973A (en) * 2015-04-03 2015-07-08 苏州经贸职业技术学院 Induction type wiring harness detection system and method
CN106093694A (en) * 2016-06-08 2016-11-09 北京小米移动软件有限公司 Connecting line, the method and device of connection status of detection connecting line
CN106199308A (en) * 2016-06-30 2016-12-07 合肥江淮新发汽车有限公司 A kind of Beam Detector
CN107064566A (en) * 2017-06-12 2017-08-18 上海华岭集成电路技术股份有限公司 A kind of method for protecting integrated circuit testing connecting line
CN207281197U (en) * 2017-08-15 2018-04-27 上海智大电子有限公司 A kind of winding displacement tester
CN207425685U (en) * 2017-12-05 2018-05-29 厦门市三特兴电子有限公司 A kind of thin film switch of manual dexterity
CN207719568U (en) * 2017-12-15 2018-08-10 昆山可腾电子有限公司 A kind of winding displacement pressing machine

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