CN203249981U

CN203249981U - System for detecting connectivity of pins of Dewar flask

Info

Publication number: CN203249981U
Application number: CN 201320139905
Authority: CN
Inventors: 华桦; 何忞; 胡晓宁; 林春
Original assignee: Shanghai Institute of Technical Physics of CAS
Current assignee: Shanghai Institute of Technical Physics of CAS
Priority date: 2013-03-26
Filing date: 2013-03-26
Publication date: 2013-10-23
Anticipated expiration: 2023-03-26

Abstract

The utility model discloses a system for detecting the connectivity of pins of a Dewar flask. The system comprises a switch matrix, a source meter and a computer. The components of the system are connected as follows: two row selection output ports of the switch matrix are respectively connected with two input ports of the source meter, and a communication port of the switch matrix and a communication port of the source meter are respectively connected with two USB ports of the computer. A detection method comprises the following steps of firstly mounting a to-be-detected Dewar flask in the system, then cyclically sending configuration signals to the switch matrix and the source meter by using the computer, and electrically connecting different inner and outer pins of the Dewar flask with the source meter sequentially so as to carry out resistance test, and thirdly judging the connectivity between the pins by using resistance test data, and saving detection results after the judgment on the connectivity between the pins is all completed. The utility model is advantageous in that the automation of the detection on the connectivity among the pins of the Dewar flask is realized, and the detection efficiency is increased; and the inaccuracy of detection caused by manually changing pin connection is prevented.

Description

A kind of Dewar flask pin detection of connectivity system

Technical field:

This patent relates to infrared focal plane device Dewar flask detection field, is specifically related to a kind of Dewar flask pin detection of connectivity system.

Background technology:

Dewar flask needs to be widely used in infrared focal plane detector performance test process, and infrared focal plane detector chip testing is numerous with the Dewar flask pin number, and inside and outside pin number is generally 50 or 78.Dewar flask needed to carry out the pin detection of connectivity before coming into operation, existing Dewar flask pin method for detecting connectivity is to utilize hand-held multimeter to detect manually, and concrete grammar is that the resistance that utilizes the ohms range of multimeter to test between the different pins judges between pin whether be communicated with.Because Dewar flask pin detection of connectivity need to be tested conduction and the inside and outside not insulativity between corresponding pin between inside and outside corresponding pin.Being 50 Dewar flask for inside and outside pin number needs at least to carry out 1125 artificial multimeters to measure to detect the Dewar flask pin connective, and being 78 Dewar flask for inside and outside pin number then needs at least to carry out 2701 artificial multimeters and measure.Detection efficiency is lower and cause that easily tester's fatigue causes undetected or flase drop manually.

Summary of the invention:

In order to solve the above-mentioned problem that detect to exist manually, the purpose of this patent provides a kind of robotization that can realize Dewar flask pin detection of connectivity, improves a kind of Dewar flask pin detection of connectivity system of detection efficiency and accuracy.

For reaching above-mentioned purpose, this patent provides a kind of Dewar flask pin detection of connectivity system, comprise: switch matrix 102, source table 103 and computing machine 104, described switch matrix 102 is the program-controlled switch matrix with the choosing of multichannel row, column selection switching function, described source table 103 is the program-controlled source tables with resistance test function, and described computing machine 104 is mini-computers.Its connected mode is: two row of switch matrix 102 select output port to link to each other with two input ports of source table 103 respectively, and the PORT COM of switch matrix 102, source table 103 links to each other with two USB port of computing machine 104 respectively.

A kind of Dewar flask pin method for detecting connectivity, step is:

One, the inside and outside pin with Dewar flask 101 to be detected links to each other with two groups of column selection ports of switch matrix 102 respectively;

Two, utilize computing machine 104 to send configuration signal to switch matrix 102, make in the inside and outside pin of Dewar flask 101 to be detected each one respectively with two groups of column selection ports conducting of switch matrix 102;

Three, utilize computing machine 104 to send configuration signal to source table 103, test the resistance between the Dewar flask 101 inside and outside pins to be detected, be completed backcasting machine 104 test transmission results;

Four, utilize test result to judge connectedness between tested pin;

Five, circulation step two, step 3, step 4 to Dewar flask to be detected 101 inside and outside all the connectedness between the pin judge;

Six, preserve testing result at computing machine 104 hard disks.

The beneficial effect of this patent is:

1) realizes the robotization of Dewar flask pin continuity testing, improved testing efficiency.

2) uncertainty of having avoided artificial replacing pin to connect is finished in the conversion of the different pins connections of Dewar flask by computer control.

Description of drawings:

Fig. 1 is this patent test macro schematic diagram.

Fig. 2 is the inside and outside pin of this patent specific embodiment Dewar flask to be detected, switch matrix, source table annexation schematic diagram.Wherein, 201 is the anodal port that links to each other with source table 103,202 is the negative pole port that links to each other with source table 103,203 is the outer pin that links to each other with Dewar flask 101 to be detected, 204 is the interior pin that links to each other with Dewar flask 101 to be detected, 205 is the vertical port that links to each other with the 1st group of 1 * 96 alignment switch of switch matrix 102,206 is the vertical port that links to each other with the 2nd group of 1 * 96 alignment switch of switch matrix 102,207 is the transverse port that links to each other with the 1st group of 1 * 96 alignment switch of

switch matrix

102, and 208 is the transverse port that links to each other with the 2nd group of 1 * 96 alignment switch of switch matrix 102.

Fig. 3 is Labview trace routine operating procedure schematic diagram in this patent specific embodiment.

Embodiment:

In order to be illustrated more clearly in this patent, this patent is described in further detail as follows below in conjunction with the drawings and specific embodiments:

Referring to Fig. 1, Dewar flask to be detected 101 in this patent detection system is surveyed Dewar flask in the infrared focal plane device, have each 50 of inside and outside pins, switch matrix 102 is for installing the Keithley707B switch matrix main frame of two Keithley7075 switch matrix cards, have 2 group of 1 * 96 alignment switch, source table 103 is the multi-functional source of Keithley2400 table, computing machine 104 is installed Labview software, can carry out Control ﹠ data acquisition to switch matrix 102 and source table 103 by Labview software programming test procedure.

Dewar flask 101 to be detected, switch matrix 102 and source table 103 link to each other, concrete connected mode is referring to Fig. 2, anodal port 201 links to each other with transverse port 207, negative pole port 202 links to each other with transverse port 208, each pin of outer pin 203 links to each other with each port of vertical port 205 successively, and each pin of interior pin 204 links to each other with each port of vertical port 206 successively.

Switch matrix 102, source table 103 link to each other with computing machine 104 by connecting line.Utilize computing machine 104 to write Labview trace routine gauge tap matrix 102, source table 103 carries out Dewar pin detection of connectivity.

Labview trace routine operating procedure is referring to Fig. 3, the 1st step, deploy switch matrix 102, make vertical port 205 switch closure corresponding with particular port in vertical port 206, rest switch disconnects, realize that two special pin electricity in the Dewar flask 101 inside and outside pins to be detected are communicated with, the 2nd step, source of configuration table 103 carries out resistance test, the 3rd step, the resistance data of source table 103 test is transferred to computing machine 104, the 4th step, the resistance data that computing machine 104 receives to be judged, resistance is greater than 1 * 10 ⁹Ohm judges that the Dewar flask pin is separated, and resistance is less than being communicated with between 10 ohm of judgement Dewar flask pins.The 5th step, circulated for the 1st, 2,3,4 steps, detection of connectivity is carried out in all possible connection between the Dewar flask 101 inside and outside pins to be detected, in the 6th step, in computing machine 104, preserve testing result.

Above-mentioned specific embodiment is not that this patent is done any pro forma restriction just in order to describe this patent in detail.

Claims

1. Dewar flask pin detection of connectivity system comprises: switch matrix (102), source table (103) and computing machine (104) is characterized in that:

Described switch matrix (102) is the program-controlled switch matrix with the choosing of multichannel row, column selection switching function, described source table (103) is the program-controlled source table with resistance test function, and described computing machine (104) is mini-computer;

Two row of switch matrix (102) select output port to link to each other with two input ports of source table (103) respectively, and the PORT COM of switch matrix (102), source table (103) links to each other with two USB port of computing machine (104) respectively.