Background technology
At present, printed circuit board (PCB) has been widely used in the electronic installations such as computer, intelligent television, mobile terminal or personal digital assistant device, in the development of electronic installation, when usually needing to be opened by electronic installation, detect the signal(l)ing condition of the chip pin of printed circuit board (PCB), electronic installation is checked and carries out mistake investigation.Wherein, module detects and often uses oscillograph to test, and can run into following problem when using oscillograph to test:
(1) during measuring-signal waveform, for convenience of measuring multiple test point simultaneously, usually need before measuring in test point, to weld wire in advance, again the wire of oscilloprobe and extraction is connected together during measurement, so, can make operating personnel one hand hold transducer, a manual manipulation oscillograph, increases work efficiency.But prior welding lead is very time-consuming, and the resistance that wire carries can affect to test result, and in addition, single one-handed performance measures limited amount, also easily during test affects test result because of probe and poor wire connection;
(2) when measuring eye pattern, owing to needing to measure two points simultaneously, therefore, need two people to operate during measurement, wherein, a personal responsibility operation probe is to ensure that contact is good, and another person is responsible for operating oscillograph simultaneously.Owing to needing operated by two people, take manpower very much, in addition, when test point and probe contacts shakiness, be difficult to measure eye pattern, and good in order to ensure contact, easily cause tip damage because of firmly excessive, increase cost.
It can thus be appreciated that, adopt existing test mode both to waste time and energy, also easily cause because of misoperation that oscilloprobe damages, test result is inaccurate.
Summary of the invention
The object of the present invention is to provide a kind of oscilloprobe auxiliary test unit, efficiency and the accuracy of test can be improved.
Oscilloprobe auxiliary test unit of the present invention, comprise detection platform, probe bracket and multiple test arm, this probe bracket is set up in above this detection platform, this probe bracket is provided with multiple probe insertion for installing oscilloprobe, this probe insertion and this test arm one_to_one corresponding are arranged, this test arm can carry out rotating and length adjustment relative to this probe bracket, this test arm is provided with the probe corresponding with this probe insertion away from one end of this probe insertion, is provided with and is connected wire between this probe insertion with this probe.
Further, the plurality of probe insertion comprises difference detector jack and single probe insertion, and the test arm that arrange corresponding to this difference detector jack is provided with differential probe, and the test arm that arrange corresponding to this single probe insertion is provided with Single probe.
Further, two probes of this differential probe are flexible probe.
Further, this Single probe is elasticity thimble.
Further, this test arm comprises Part I, Part II and Part III, and this Part I and this Part III stagger and arrange on the length direction of this test arm, and this Part II tilts to connect this Part I and this Part III.
Further, this probe bracket is parallel with this test platform, the plane at Part I this test platform place vertical with Part III of this test arm.
Further, this Part I comprises the first arm body and the first adapter sleeve, this probe bracket is provided with Connection Block in the below of this probe insertion, this first adapter sleeve is threaded with this Connection Block, this the first arm body to be arranged in this first adapter sleeve and can the axis of this first adapter sleeve to be that axle rotates, and this first arm body is connected with this Part II.
Further, the outer wall of this first arm body is provided with annular groove, and this first arm body is socketed by this annular groove and this first adapter sleeve and rotatable.
Further, this Part II comprises the second arm body, the 3rd arm body and the second adapter sleeve, and this second arm body is threaded and adjustable relative distance with the two ends of this second adapter sleeve respectively with the 3rd arm body.
Further, this Part III comprises the 4th arm body, the 5th arm body and the 3rd adapter sleeve, 4th arm body is threaded and adjustable relative distance with the two ends of the 3rd adapter sleeve respectively with the 5th arm body, and this probe is fixed on the 5th arm body, and the 4th arm body is connected with this Part II.
In embodiments of the invention, probe bracket is provided with the probe insertion for installing oscilloprobe, and connect probe insertion and corresponding probe by test arm, test arm can be carried out rotating with length adjustment to adjust the position of probe by relative probe support, thus ensure that probe fully contacts with test point, and only oscilloprobe need be inserted in corresponding jack and can test during use, easy to use, can save manpower and time, improve the accuracy of test.
Embodiment
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to the specific embodiment of the present invention, structure, feature and effect thereof, be described in detail as follows.
Fig. 1 is the structural representation of oscilloprobe auxiliary test unit in first embodiment of the invention.As shown in Figure 1, oscilloprobe auxiliary test unit 10 of the present invention comprises probe bracket 11, detection platform 12 and test arm 13, and test arm 13 is provided with probe 14.
Probe bracket 11 is located at the top of test platform 12 by adjustable for height support bar 112 level frame, probe bracket 11 is provided with multiple probe insertion 111 for installing oscilloprobe (not shown), and probe insertion 111 and test arm 13 one_to_one corresponding are arranged.In the present embodiment, probe insertion 111 is difference detector jack, oscillographic difference detector can be inserted, probe 14 is the differential probe corresponding with difference detector jack, and two of differential probe probes (two parts of differential probe) are flexible probe, thus the size of adjustable differential probe front end is to ensure the contact with test point.
Test arm 13 is between probe bracket 11 and test platform 12, and test arm 13 can be carried out rotating and length adjustment by relative probe support 11.Particularly, incorporated by reference to Fig. 2, test arm 13 comprises Part I 131, Part II 132 and Part III 133, the plane at Part I 131 and Part III 133 vertical detection platform 12 place, and setting of staggering on the length direction of test arm 13, Part II 132 tilts to connect Part I 131 and Part III 133.In this enforcement, Part I 131, Part II 132 are interconnected with the inside of Part III 133, two connect wire 15 and are communicated with probe insertion 111 and probe 14 in the inside of test arm 13, so, when oscilloprobe inserts probe insertion 111, the signal of corresponding test point can be received by probe 14.
Part I 131 comprises the first arm body 131a and the first adapter sleeve 131b, probe bracket 11 is provided with Connection Block 113 in the below of probe insertion 111, first adapter sleeve 131b is threaded with Connection Block 113, first arm body 131a is arranged in the first adapter sleeve 131b, and be socketed by the annular groove 131c and the first adapter sleeve 131b being arranged on the first arm body 131a outer wall, thus can the axis of the first adapter sleeve 131b be that axle rotates, first arm body 131a is connected with Part II 132, and the entirety of mechanical arm 13 can be rotated by relative probe support 11.
Part II 132 comprises the second arm body 132a, 3rd arm body 132b and the second adapter sleeve 132c, second arm body 132a is threaded with the two ends of the second adapter sleeve 132c respectively with the 3rd arm body 132b, by the relative distance between the adjustable second arm body 132a of turn second adapter sleeve 132c and the 3rd arm body 132b, and then regulate the length of Part II 132, the length of Part II 132 determines the test specification (radius) of test arm 13, one end of the relative second adapter sleeve 132c of second arm body 132a is connected with the first arm body 131a, one end of the relative second adapter sleeve 132c of 3rd arm body 132b is connected with Part III 133.
Part III 133 comprises the 4th arm body 133a, the 5th arm body 133b and the 3rd adapter sleeve 133c, 4th arm body 133a is threaded with the two ends of the 3rd adapter sleeve 133c respectively with the 5th arm body 133b, probe 14 is fixed on the one end of relative 3rd adapter sleeve 133c on the 5th arm body 133b, by turn the 3rd adapter sleeve 133c, relative distance between adjustable 4th arm body 133a and the 5th arm body 133b, and then regulating the height of probe 14, one end of the relative 3rd adapter sleeve 133c of the 4th arm body 133a is connected with the 3rd arm body 132b.
Next the using method of oscilloprobe auxiliary test unit of the present invention is described in detail as follows.
First, raise probe bracket 11 by the height adjusting support bar 112, after sample to be tested is put into detection platform 12, then lower probe bracket 11 by the height of adjustment support bar 112, the height of each probe 14 of preliminary adjustment sample relatively to be tested.Then, according to the position integral-rotation test arm 13 of each test point, after making probe 14 roughly be positioned at the top of test point, then turn second adapter sleeve 132c, probe 14 is adjusted to directly over test point.Finally, according to the size deflectable stylet 14 of test point to adjust the size of probe 14 front end, then turn the 3rd adapter sleeve 133c, probe 14 is dropped to and contacts with test point.Probe 14 pairs of test points can be made to apply certain pressure by the turn of the 3rd adapter sleeve 133c, to ensure that probe 14 fully contacts with between test point, treat that each probe 14 adjusts complete, oscilloprobe is inserted in probe insertion 111 and can test.
Fig. 3 is the structural representation of oscilloprobe auxiliary test unit in second embodiment of the invention.As shown in Figure 3, the oscilloprobe auxiliary test unit 20 of the present embodiment is with the key distinction of a upper embodiment, in this enforcement, probe insertion 211 is single probe insertion, can be used for oscillographic single probe is installed, probe 24 is and single corresponding Single probe of popping one's head in, and this Single probe is elasticity thimble, is connected wire 25 is communicated with (please refer to the drawing 4) between probe insertion 211 with probe 24 by one.
In the present embodiment, probe bracket 21 and detection platform 22 be arranged in parallel, and test arm 23 is identical with test arm 13 structure in the first embodiment.Particularly, as shown in Figure 4, test arm 23 comprises Part I 231, Part II 232 and Part III 233, Part I 231 comprises the first arm body 231a and the first adapter sleeve 231b, first arm body 231a to be socketed and rotatable by annular groove 231c and the first adapter sleeve 231b, first adapter sleeve 231c is threaded with the Connection Block 213 on probe bracket 21, Part II 232 comprises the second arm body 232a, 3rd arm body 232b and the second adapter sleeve 232c, second arm body 232a is threaded with the two ends of the second adapter sleeve 232c respectively with the 3rd arm body 232b, Part III 233 comprises the 4th arm body 233a, 5th arm body 233b and the 3rd adapter sleeve 233c, 4th arm body 233a is threaded with the two ends of the second adapter sleeve 233c respectively with the 3rd arm body 233b.
The using method of the oscilloprobe auxiliary test unit 20 of the present embodiment is identical with a upper embodiment, does not repeat them here.In the present embodiment, probe 24 is elasticity thimble, and probe 24 can be made to produce distortion by turn the 3rd adapter sleeve 233c, to ensure probe 24 and fully contacting between test point, test result is more reliable.In addition, because multiple test arm 23 can carry out the signal testing of multiple spot simultaneously, therefore without the need to prior welding lead in test point, use convenient.
Fig. 5 is the structural representation of oscilloprobe auxiliary test unit in third embodiment of the invention.As shown in Figure 5, the oscilloprobe auxiliary test unit 30 of the present embodiment is with the key distinction of above-described embodiment, in the present embodiment, probe insertion on probe bracket 31 comprises difference detector jack 311 and single probe insertion 315, can be respectively used to that oscillographic difference detector is installed pop one's head in single, the test arm 33 corresponding with difference detector jack 311 is provided with differential probe 34, and the test arm 33 corresponding with single probe insertion 315 is provided with Single probe 36.
In the present embodiment, probe bracket 31 and detection platform 32 be arranged in parallel, test arm 33 between probe bracket 31 and detection platform 32, by configuring difference detector jack 311 and single probe insertion 315 simultaneously, can simultaneously test signal waveform and eye pattern, improve testing efficiency.The using method of the oscilloprobe auxiliary test unit 20 of the present embodiment is identical with a upper embodiment, does not repeat them here.
To sum up, oscilloprobe auxiliary test unit of the present invention at least has following beneficial effect:
(1) the present invention is provided with the probe insertion corresponding with oscilloprobe, and connect probe insertion and probe by test arm, test arm can be carried out rotating with length adjustment to adjust the position of probe by relative probe support, ensure that probe fully contacts with test point, only oscilloprobe need be inserted in corresponding jack and can test during use, easy to use, multi-point sampler can be carried out simultaneously, save manpower and time, improve the accuracy of test;
(2) the flexible or elastic deformation of probe of the present invention, can ensure fully contacting of probe and test point further, avoid manual operation to cause tissue damage;
(3) without the need to welding lead in advance when using oscilloprobe auxiliary test unit of the present invention to carry out signal testing, can increase work efficiency, avoid the accuracy that the Resistance Influence of wire self is tested.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.