CN107677950B - Fingerprint chip testing device and testing method - Google Patents
Fingerprint chip testing device and testing method Download PDFInfo
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- CN107677950B CN107677950B CN201710752466.0A CN201710752466A CN107677950B CN 107677950 B CN107677950 B CN 107677950B CN 201710752466 A CN201710752466 A CN 201710752466A CN 107677950 B CN107677950 B CN 107677950B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
- G01R31/2808—Holding, conveying or contacting devices, e.g. test adapters, edge connectors, extender boards
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- Microelectronics & Electronic Packaging (AREA)
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention relates to the field of fingerprint chip testing, and aims to provide a fingerprint chip testing device and a fingerprint chip testing method. A fingerprint chip testing device, comprising: the device comprises a base, a plurality of transversely arranged test seat units, a longitudinal moving seat, a transverse moving seat, dummy finger test units and output signal test units, wherein the test seat units are arranged on the base, the longitudinal moving seat is provided with a transverse beam and a longitudinal driving device and is in sliding connection with the base through at least one longitudinal guide rail, the transverse moving seat is provided with a transverse driving device and is in sliding connection with the transverse beam through a transverse guide rail, the dummy finger test units are arranged on the transverse moving seat and are the same as the test seat units in number, and the output signal test units are arranged on the longitudinal moving seat and; the output signal testing unit and the fake finger testing unit are respectively positioned on the upper side of the testing seat unit and correspond to the testing seat unit one by one. The fingerprint chip testing device is high in testing efficiency and testing precision.
Description
Technical Field
The invention relates to the field of fingerprint chip testing, in particular to a fingerprint chip pressing simulation testing device and a testing method.
Background
Fingerprint identification technology has been widely used in the fields of smart phones, attendance machines, security entrance guards, port clearance and the like; when a human finger presses a fingerprint identification area of the fingerprint chip, an electric signal is generated and transmitted to the controller to carry out program identification; the reliability of the performance of the fingerprint chip is very important for ensuring the performance stability of the fingerprint identification device, and before the fingerprint identification device is used, the performance of the pressing force of the fingerprint chip and the output current and voltage signals needs to be tested and sorted; the performance test of the traditional fingerprint chip mostly depends on manual detection, and the defects of low test efficiency and test precision exist; therefore, it is an urgent need to solve the problem of designing a fingerprint chip testing device and a testing method with high testing efficiency and high testing precision.
Disclosure of Invention
The invention aims to overcome the defects that the performance test of the existing fingerprint chip mostly depends on manual detection, and the test efficiency and the test precision are lower, and provides a fingerprint chip test device and a fingerprint chip test method with higher test efficiency and test precision.
The specific technical scheme of the invention is as follows:
a fingerprint chip testing device, comprising: a base; the fingerprint chip testing device further comprises: the device comprises a plurality of transversely arranged test seat units arranged on a base, a longitudinal moving seat which is provided with a cross beam and a longitudinal driving device and is in sliding connection with the base through at least one longitudinal guide rail, a transverse moving seat which is provided with a transverse driving device and is in sliding connection with the cross beam through a transverse guide rail, dummy finger test units which are arranged on the transverse moving seat and have the same number as the test seat units, and output signal test units which are arranged on the longitudinal moving seat and have the same number as the test seat units; the output signal testing unit and the fake finger testing unit are respectively positioned on the upper side of the testing seat unit and correspond to the testing seat unit one by one. The fingerprint chip testing device is provided with a plurality of conveying stations, the longitudinal driving device drives the transverse beam to move longitudinally, the transverse driving device drives the transverse moving seat to move transversely, manual detection is carried out by replacing manpower with the fake finger testing unit and the output signal testing unit, repeatability and stability are high, and testing efficiency and testing precision are high.
Preferably, the test socket unit includes: the fingerprint chip testing device comprises a testing substrate, a sensor seat, a fingerprint chip seat, a containing hole and a fingerprint chip, wherein the upper end of the testing substrate is provided with a containing groove, the sensor seat is provided with a pressure sensor for supporting the testing substrate and is connected with a base, the fingerprint chip seat is provided with a printed circuit adapter plate and is detachably connected with the bottom surface of the containing groove, and the fingerprint chip seat is arranged at the upper end of the fingerprint chip seat and is provided with. The pressure sensor of the test seat unit supports the test substrate, the fingerprint chip seat is provided with a printed circuit adapter plate, and the fingerprint chip is arranged in a containing hole at the upper end of the fingerprint chip seat, so that the structure is compact and the test is convenient; the fingerprint chip holder of the test socket unit can be conveniently replaced according to the specification of the tested fingerprint chip.
Preferably, the fake finger test unit includes: the device comprises a cylinder mounting seat connected with a transverse moving seat, a simple and compact structure, a fake finger testing cylinder connected with the cylinder mounting seat, a fake finger testing switching block, a fake finger testing positioning plate, an adjusting screw rod, a fake finger testing pressure regulating spring, a fake finger testing vertical guide rail and a fake finger testing head, wherein the upper end of the fake finger testing switching block is connected with a piston rod of the fake finger testing cylinder; the sliding block of the artificial finger test vertical guide rail is connected with the transverse moving seat; and a compressed air inlet pipeline communicated with the fake finger test cylinder is provided with a fake finger test pressure reducing valve. The fake finger testing unit is in threaded connection with a corresponding adjusting screw hole through an adjusting screw rod by adjusting the pressure of the fake finger testing pressure reducing valve, and fine-adjusts the pre-pressure of the fake finger testing pressure adjusting spring, so that the downward pressure of the testing fake finger corresponds to the specification of the tested fingerprint chip, and the testing precision is improved.
Preferably, the fake finger test unit further comprises: an adjusting limiting plate provided with an adjusting screw rod limiting long hole with the length direction being the up-down direction; the adjusting screw rod limiting long hole is sleeved outside the adjusting screw rod, and the width of the limiting long hole is matched with the outer diameter of the adjusting screw rod. The adjusting limiting plate provided with the adjusting screw rod limiting long hole is beneficial to improving the stability of the adjusting screw rod.
Preferably, the output signal testing unit includes: the device comprises a cylinder fixing seat connected with a cross beam, an output signal testing cylinder connected with the cylinder fixing seat, an output signal testing switching block, an output signal testing positioning plate, an adjusting limiting plate, an adjusting screw rod, an output signal testing pressure regulating spring, an output signal testing vertical guide rail and an output signal testing assembly, wherein the upper end of the output signal testing vertical guide rail is connected with a piston rod of the output signal testing cylinder; the slide block of the output signal testing vertical guide rail is connected with the cross beam; the width of the limiting long hole of the adjusting screw is matched with the outer diameter of the adjusting screw; a screw rod of the adjusting screw rod penetrates through the adjusting screw rod limiting long hole and is in threaded connection with an adjusting screw hole; two ends of the output signal testing pressure regulating spring are respectively connected with the cross beam and the regulating screw rod; and the compressed air inlet pipeline communicated with the output signal test cylinder is provided with an output signal test pressure reducing valve. The output signal testing unit is used for testing the pressure of the pressure reducing valve by adjusting the output signal, is in threaded connection with a corresponding adjusting screw hole through the adjusting screw rod, finely adjusts the pre-pressure of the output signal testing pressure regulating spring, enables the down-pressure of the testing pressure head to correspond to the specification of the tested fingerprint chip and improves the testing precision.
Preferably, the output signal testing assembly includes: the lower extreme is equipped with the mounting groove and the test head mounting panel of being connected with the vertical guide rail lower extreme of output signal test, and the elastic column that upper end and mounting groove top surface are connected locates the mounting groove downside and the limiting plate of being connected with the elastic column lower extreme, is connected with the limiting plate lower extreme and the relative output signal test pressure head in printed circuit keysets upper end. The limiting plate of the output signal testing assembly is matched with the elastic column, and the impact force generated when the testing pressure head presses the printed circuit adapter plate is buffered and is not damaged.
Preferably, the longitudinal driving means comprises: the device comprises a longitudinal driving motor connected with a base, a longitudinal driving synchronous wheel connected with an output shaft of the longitudinal driving motor, a longitudinal driving driven synchronous wheel pivoted with the base, and a longitudinal driving synchronous belt in transmission connection with the longitudinal driving synchronous wheel and the longitudinal driving driven synchronous wheel respectively; one side of the longitudinal driving synchronous belt is connected with the other end of the beam. The longitudinal driving device has simple and practical structure.
Preferably, the lateral driving means comprises: the transverse driving synchronous belt is in transmission connection with the transverse driving synchronous wheel and the transverse driving driven synchronous wheel respectively; one side of the transverse driving synchronous belt is connected with the transverse moving seat. The transverse driving device has simple and practical structure.
A test method of a fingerprint chip test device is provided, the fingerprint chip test device is provided with a limiting structure of the fingerprint chip test device; (1) placing the fingerprint chip in the corresponding containing hole of the fingerprint chip seat, and connecting the fingerprint chip seat with the bottom surface of the containing groove through screws; the pressure of the fake finger test pressure reducing valve is adjusted, the fake finger test pressure adjusting spring is in threaded connection with a corresponding adjusting screw hole through the adjusting screw rod, and the pre-pressure of the fake finger test pressure adjusting spring is finely adjusted, so that the downward pressure of the tested fake finger corresponds to the specification of the tested fingerprint chip; adjusting the pressure of the output signal test pressure reducing valve, connecting the pressure with a corresponding adjusting screw hole through an adjusting screw rod in a threaded manner, and finely adjusting the pre-pressure of the output signal test pressure regulating spring to enable the downward pressure of the test pressure head to correspond to the printed circuit adapter plate matched with the tested fingerprint chip; (2) the longitudinal driving device drives the beam to move longitudinally, so that the testing fake finger is opposite to the upper end of the fingerprint chip, and the testing pressure head is opposite to the upper end of the printed circuit adapter plate; (3) a piston rod of the fake finger testing cylinder extends out, the fake finger testing transfer block, the fake finger testing vertical guide rail and the fake finger testing head move downwards, the fake finger presses the upper end of the fingerprint chip, and the pressure sensor transmits the measured pressure value to the controller; the piston rod of the output signal testing cylinder extends out, the output signal testing transfer block, the output signal testing vertical guide rail and the output signal testing assembly move downwards, the testing pressure head presses the upper end of the printed circuit transfer plate and transmits the measured output signal value to the controller; (4) according to different specifications of the tested fingerprint chips, the specifications of a plurality of tested fake fingers arranged on the fake finger testing head correspond to the specifications of the tested fingerprint chips one by one; when the fingerprint chips with different specifications are replaced, replacing the fingerprint chip holder according to the specification of the tested fingerprint chip, and placing the fingerprint chip in the accommodating groove; the transverse driving device drives the transverse moving seat, the false finger testing vertical guide rail and the false finger testing head to move transversely, so that the testing false finger corresponding to the specification of the tested fingerprint chip moves to the testing position, and the testing false finger is opposite to the upper end of the tested fingerprint chip. The testing method of the fingerprint chip testing device can meet the testing requirement of the fingerprint chip and improve the testing efficiency of replacing fingerprint chips with different specifications.
Compared with the prior art, the invention has the beneficial effects that: the fingerprint chip testing device is provided with a plurality of conveying stations, the longitudinal driving device drives the transverse beam to move longitudinally, the transverse driving device drives the transverse moving seat to move transversely, manual detection is carried out by replacing manpower with the fake finger testing unit and the output signal testing unit, repeatability and stability are high, and testing efficiency and testing precision are high. The pressure sensor of the test seat unit supports the test substrate, the fingerprint chip seat is provided with a printed circuit adapter plate, and the fingerprint chip is arranged in a containing hole at the upper end of the fingerprint chip seat, so that the structure is compact and the test is convenient; the fingerprint chip holder of the test socket unit can be conveniently replaced according to the specification of the tested fingerprint chip. The fake finger testing unit is in threaded connection with a corresponding adjusting screw hole through an adjusting screw rod by adjusting the pressure of the fake finger testing pressure reducing valve, and fine-adjusts the pre-pressure of the fake finger testing pressure adjusting spring, so that the downward pressure of the testing fake finger corresponds to the specification of the tested fingerprint chip, and the testing precision is improved. The adjusting limiting plate provided with the adjusting screw rod limiting long hole is beneficial to improving the stability of the adjusting screw rod. The output signal testing unit is used for testing the pressure of the pressure reducing valve by adjusting the output signal, is in threaded connection with a corresponding adjusting screw hole through the adjusting screw rod, finely adjusts the pre-pressure of the output signal testing pressure regulating spring, enables the down-pressure of the testing pressure head to correspond to the specification of the tested fingerprint chip and improves the testing precision. The limiting plate of the output signal testing assembly is matched with the elastic column, and the impact force generated when the testing pressure head presses the printed circuit adapter plate is buffered and is not damaged. The longitudinal driving device and the transverse driving device are simple and practical in structure. The testing method of the fingerprint chip testing device can meet the testing requirement of the fingerprint chip and improve the testing efficiency of replacing fingerprint chips with different specifications.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a structure of a fake finger test unit;
fig. 3 is a schematic structural diagram of an output signal testing unit.
In the figure: the device comprises a base 1, a test seat unit 2, a containing groove 21, a test substrate 22, a pressure sensor 23, a sensor seat 24, a printed circuit adapter plate 25, a fingerprint chip seat 26, a containing hole 27, a fingerprint chip 28, a longitudinal moving seat 3, a cross beam 31, a longitudinal driving motor 32, a longitudinal driving synchronous wheel 33, a longitudinal driving driven synchronous wheel 34, a longitudinal driving synchronous belt 35, a longitudinal guide rail 4, a transverse guide rail 5, a transverse moving seat 6, a transverse driving motor 61, a transverse driving synchronous belt 62, a fake finger test unit 7, a cylinder mounting seat 71, a fake finger test cylinder 72, a fake finger test adapter block 73, an adjusting screw hole 74, a fake finger test positioning plate 75, an adjusting screw 76, a fake finger test pressure regulating spring 77, a fake finger test vertical guide rail 78, a test fake finger 79, a fake finger test head 710, an adjusting screw limiting long hole 711, an adjusting limiting plate 712, a printed circuit, The device comprises an output signal testing unit 8, a cylinder fixing seat 81, an output signal testing cylinder 82, an output signal testing transfer block 83, an adjusting screw hole 84, an output signal testing positioning plate 85, an adjusting screw rod limiting long hole 86, an adjusting limiting plate 87, an adjusting screw rod 88, an output signal testing pressure regulating spring 89, an output signal testing vertical guide rail 810, a mounting groove 811, a testing head mounting plate 812, an elastic column 813, a limiting plate 814 and an output signal testing pressure head 815.
Detailed Description
The invention will be further described with reference to the drawings.
As shown in the attached figures 1, 2 and 3: a fingerprint chip testing device, comprising: the test device comprises a base 1, four transversely arranged test seat units 2 arranged on the base 1, a longitudinal moving seat 3 which is provided with a cross beam 31 and a longitudinal driving device and is in sliding connection with the base 1 through two longitudinal guide rails 4, a transverse moving seat 6 which is provided with a transverse driving device and is in sliding connection with the cross beam 31 through a transverse guide rail 5, dummy finger test units 7 which are arranged on the transverse moving seat 6 and have the same number as the test seat units 2, and output signal test units 8 which are arranged on the longitudinal moving seat 3 and have the same number as the test seat units 2; the output signal testing unit 8 and the fake finger testing unit 7 are respectively positioned on the upper side of the testing seat unit 2 and are in one-to-one correspondence with the testing seat unit 2.
The test socket unit 2 includes: a test substrate 22 with a containing groove 21 on the upper end, a sensor seat 24 with a pressure sensor 23 for supporting the test substrate 22 and screwed with the base 1, a fingerprint chip seat 26 with a printed circuit adapter plate 25 and screwed with the bottom surface of the containing groove 21, a containing hole 27 on the upper end of the fingerprint chip seat 26 and a fingerprint chip 28 in the containing hole 27.
The fake finger test unit 7 includes: a cylinder mounting base 71 which is in screw connection with the transverse moving base 6, a fake finger testing cylinder 72 which is in screw connection with the cylinder mounting base 71, a fake finger testing transfer block 73 the upper end of which is in screw connection with a piston rod of the fake finger testing cylinder 72, a fake finger testing positioning plate 75 which is in screw connection with the fake finger testing transfer block 73 and is provided with three adjusting screw holes 74 arranged up and down, an adjusting screw 76 which is in screw connection with one adjusting screw hole 74, a fake finger testing pressure regulating spring 77 the two ends of which are respectively connected with the transverse moving base 6 and the adjusting screw 76, a fake finger testing vertical guide rail 78 the upper end of which is in screw connection with the fake finger testing transfer block 73, and a fake finger testing head 710 which is provided with two testing fake fingers 79 arranged transversely and is in screw connection with the lower end of the fake finger testing vertical guide rail 78; the sliding block of the artificial finger test vertical guide rail 78 is connected with the transverse moving seat 6 through a screw; the compressed air intake line communicating with the dummy finger test cylinder 72 is provided with a dummy finger test relief valve (not shown in the drawings).
The fake finger test unit 7 further includes: an adjustment limiting plate 712 provided with an adjustment screw rod limiting long hole 711 whose length direction is the up-down direction; the adjusting screw limiting long hole 711 is sleeved outside the screw of the adjusting screw 76, and the width of the limiting long hole is in clearance fit with the outer diameter of the adjusting screw 76.
The output signal test unit 8 includes: the device comprises a cylinder fixing seat 81 connected with a cross beam 31 through screws, an output signal testing cylinder 82 connected with the cylinder fixing seat 81 through screws, an output signal testing transfer block 83 with the upper end connected with a piston rod of the output signal testing cylinder 82 through a screw thread, an output signal testing positioning plate 85 connected with the output signal testing transfer block 83 through screws and provided with three adjusting screw holes 84 arranged up and down, an adjusting limiting plate 87 provided with an adjusting screw rod limiting long hole 86 with the length direction in the up-down direction and connected with the output signal testing positioning plate 85 through screws, an adjusting screw rod 88, an output signal testing pressure regulating spring 89, an output signal testing vertical guide rail 810 with the upper end connected with the output signal testing transfer block 83 through screws, and an output signal testing assembly arranged at the lower end of the output signal testing vertical guide rail 810; the slide block of the output signal testing vertical guide rail 810 is connected with the cross beam 31 through a screw; the width of the limiting long hole 86 of the adjusting screw 88 is in clearance fit with the outer diameter of the adjusting screw 88; the screw of the adjusting screw 88 passes through the limiting long hole 86 of the adjusting screw 88 and is in threaded connection with one adjusting screw hole 84; two ends of the output signal testing pressure regulating spring 89 are respectively connected with the cross beam 31 and the regulating screw 88; the compressed air intake line in communication with the output signal test cylinder 82 is provided with an output signal test relief valve (not shown in the drawings).
The output signal testing assembly comprises: the lower extreme is equipped with mounting groove 811 and test head mounting panel 812 with output signal tests vertical guide rail 810 lower extreme screwed connection, the elasticity post 813 that the upper end and mounting groove 811 top surface bonded, locate mounting groove 811 downside and with the limiting plate 814 of elasticity post 813 lower extreme bonding, with limiting plate 814 lower extreme screwed connection and the relative output signal test pressure head 815 of printed circuit keysets 25 upper end. The material of the elastic column 813 is rubber.
The longitudinal driving device comprises: a longitudinal driving motor 32 in screw connection with the base 1, a longitudinal driving synchronous wheel 33 in key connection with an output shaft of the longitudinal driving motor 32, a longitudinal driving driven synchronous wheel 34 pivoted with the base 1 through a bearing, and a longitudinal driving synchronous belt 35 in transmission connection with the longitudinal driving synchronous wheel 33 and the longitudinal driving driven synchronous wheel 34 respectively; one side of the longitudinal driving timing belt 35 is screw-connected with the other end of the cross beam 31.
The transverse driving device comprises: a transverse driving motor 61 connected with one end of the transverse beam 31 by a screw, a transverse driving synchronous wheel (not shown in the drawing) connected with an output shaft key of the transverse driving motor 61, a transverse driving driven synchronous wheel (not shown in the drawing) pivoted with the other end of the transverse beam 31 through a bearing, and a transverse driving synchronous belt 62 respectively connected with the transverse driving synchronous wheel and the transverse driving driven synchronous wheel in a transmission way; one side of the transverse driving synchronous belt 62 is in screw connection with the transverse moving seat 6.
A test method of a fingerprint chip 28 test device, the fingerprint chip 28 test device has the limit structure of the fingerprint chip test device; (1) placing the fingerprint chip 28 in the corresponding containing hole 27 of the fingerprint chip holder 26, and connecting the fingerprint chip holder 26 with the bottom surface of the containing groove 21 by screws; the pressure of the fake finger test pressure reducing valve is adjusted, the adjusting screw 76 is in threaded connection with a corresponding adjusting screw hole 74, and the pre-pressure of the fake finger test pressure adjusting spring 77 is finely adjusted, so that the downward pressure of the test fake finger 79 corresponds to the specification of the tested fingerprint chip 28; the pressure of the output signal testing pressure reducing valve is adjusted, the output signal testing pressure reducing valve is in threaded connection with a corresponding adjusting screw hole 84 through an adjusting screw 88, and the pre-pressure of an output signal testing pressure adjusting spring 89 is finely adjusted, so that the downward pressure of a testing pressure head corresponds to the printed circuit adapter plate 25 matched with the tested fingerprint chip 28; (2) the longitudinal driving device drives the beam 31 to move longitudinally, so that the testing fake finger 79 is opposite to the upper end of the fingerprint chip 28, and the testing pressure head is opposite to the upper end of the printed circuit adapter plate 25; (3) the piston rod of the dummy finger test cylinder 72 extends out, and moves downwards through the dummy finger test transfer block 73, the dummy finger test vertical guide rail 78 and the dummy finger test head 710, the dummy finger presses the upper end of the fingerprint chip 28, and the pressure sensor 23 transmits the measured pressure value to the controller; the piston rod of the output signal testing cylinder 82 extends out, the output signal testing transfer block 83, the output signal testing vertical guide rail 810 and the output signal testing component move downwards, the testing pressure head presses the upper end of the printed circuit transfer plate 25 and transmits the measured output signal value to the controller; (4) according to two different specifications of the tested fingerprint chip 28, the specifications of the two tested fake fingers 79 arranged on the fake finger testing head 710 correspond to the specifications of the tested fingerprint chip 28 one by one; when the fingerprint chips 28 with different specifications are replaced, the fingerprint chip holder 26 is replaced according to the specification of the tested fingerprint chip 28, and the fingerprint chip 28 is placed in the accommodating groove 21; the transverse driving device drives the transverse moving seat 6, the fake finger test vertical guide rail 78 and the fake finger test head 710 to move transversely, so that the test fake finger 79 corresponding to the specification of the tested fingerprint chip 28 moves to the test position, and the test fake finger 79 is opposite to the upper end of the tested fingerprint chip 28.
The invention has the beneficial effects that: the fingerprint chip testing device is provided with a plurality of conveying stations, the longitudinal driving device drives the transverse beam to move longitudinally, the transverse driving device drives the transverse moving seat to move transversely, manual detection is carried out by replacing manpower with the fake finger testing unit and the output signal testing unit, repeatability and stability are high, and testing efficiency and testing precision are high. The pressure sensor of the test seat unit supports the test substrate, the fingerprint chip seat is provided with a printed circuit adapter plate, and the fingerprint chip is arranged in a containing hole at the upper end of the fingerprint chip seat, so that the structure is compact and the test is convenient; the fingerprint chip holder of the test socket unit can be conveniently replaced according to the specification of the tested fingerprint chip. The fake finger testing unit is in threaded connection with a corresponding adjusting screw hole through an adjusting screw rod by adjusting the pressure of the fake finger testing pressure reducing valve, and fine-adjusts the pre-pressure of the fake finger testing pressure adjusting spring, so that the downward pressure of the testing fake finger corresponds to the specification of the tested fingerprint chip, and the testing precision is improved. The adjusting limiting plate provided with the adjusting screw rod limiting long hole is beneficial to improving the stability of the adjusting screw rod. The output signal testing unit is used for testing the pressure of the pressure reducing valve by adjusting the output signal, is in threaded connection with a corresponding adjusting screw hole through the adjusting screw rod, finely adjusts the pre-pressure of the output signal testing pressure regulating spring, enables the down-pressure of the testing pressure head to correspond to the specification of the tested fingerprint chip and improves the testing precision. The limiting plate of the output signal testing assembly is matched with the elastic column, and the impact force generated when the testing pressure head presses the printed circuit adapter plate is buffered and is not damaged. The longitudinal driving device and the transverse driving device are simple and practical in structure. The testing method of the fingerprint chip testing device can meet the testing requirement of the fingerprint chip and improve the testing efficiency of replacing fingerprint chips with different specifications.
It will be obvious to those skilled in the art that the present invention may be varied in many ways, and that such variations are not to be regarded as a departure from the scope of the invention. All such modifications as would be obvious to one skilled in the art are intended to be included within the scope of this claim.
Claims (7)
1. A fingerprint chip testing device, comprising: a base; the fingerprint chip testing device is characterized by further comprising: the test device comprises four test seat units which are arranged transversely on a base, a longitudinal moving seat which is provided with a cross beam and a longitudinal driving device and is in sliding connection with the base through at least one longitudinal guide rail, a transverse moving seat which is provided with a transverse driving device and is in sliding connection with the cross beam through a transverse guide rail, dummy finger test units which are arranged on the transverse moving seat and have the same number as the test seat units, and output signal test units which are arranged on the longitudinal moving seat and have the same number as the test seat units; the output signal testing unit and the fake finger testing unit are respectively positioned on the upper side of the testing seat unit and correspond to the testing seat unit one by one; the test socket unit includes: the fingerprint chip testing device comprises a testing substrate, a sensor seat, a fingerprint chip seat, a containing hole and a fingerprint chip, wherein the upper end of the testing substrate is provided with a containing groove; the fake finger test unit includes: the device comprises a cylinder mounting seat connected with a transverse moving seat, a fake finger testing cylinder connected with the cylinder mounting seat, a fake finger testing switching block, a fake finger testing positioning plate, an adjusting screw rod, a fake finger testing pressure regulating spring, a fake finger testing vertical guide rail and a fake finger testing head, wherein the upper end of the fake finger testing positioning plate is connected with a piston rod of the fake finger testing cylinder; the sliding block of the artificial finger test vertical guide rail is connected with the transverse moving seat; and a compressed air inlet pipeline communicated with the fake finger test cylinder is provided with a fake finger test pressure reducing valve.
2. The fingerprint chip testing device of claim 1, wherein: the fake finger test unit further comprises: an adjusting limiting plate provided with an adjusting screw rod limiting long hole with the length direction being the up-down direction; the adjusting screw rod limiting long hole is sleeved outside the adjusting screw rod, and the width of the adjusting screw rod limiting long hole is matched with the outer diameter of the adjusting screw rod.
3. The fingerprint chip testing device of claim 1, wherein: the output signal test unit includes: the device comprises a cylinder fixing seat connected with a cross beam, an output signal testing cylinder connected with the cylinder fixing seat, an output signal testing switching block, an output signal testing positioning plate, an adjusting limiting plate, an adjusting screw rod, an output signal testing pressure regulating spring, an output signal testing vertical guide rail and an output signal testing assembly, wherein the upper end of the output signal testing vertical guide rail is connected with a piston rod of the output signal testing cylinder; the slide block of the output signal testing vertical guide rail is connected with the cross beam; the width of the limiting long hole of the adjusting screw is matched with the outer diameter of the adjusting screw; a screw rod of the adjusting screw rod penetrates through the adjusting screw rod limiting long hole and is in threaded connection with an adjusting screw hole; two ends of the output signal testing pressure regulating spring are respectively connected with the cross beam and the regulating screw rod; and the compressed air inlet pipeline communicated with the output signal test cylinder is provided with an output signal test pressure reducing valve.
4. The fingerprint chip testing device of claim 3, wherein: the output signal testing assembly comprises: the lower extreme is equipped with the mounting groove and the test head mounting panel of being connected with the vertical guide rail lower extreme of output signal test, and the elastic column that upper end and mounting groove top surface are connected locates the mounting groove downside and the limiting plate of being connected with the elastic column lower extreme, is connected with the limiting plate lower extreme and the relative output signal test pressure head in printed circuit keysets upper end.
5. The fingerprint chip testing device of claim 1, 2, 3 or 4, wherein: the longitudinal driving device comprises: the device comprises a longitudinal driving motor connected with a base, a longitudinal driving synchronous wheel connected with an output shaft of the longitudinal driving motor, a longitudinal driving driven synchronous wheel pivoted with the base, and a longitudinal driving synchronous belt in transmission connection with the longitudinal driving synchronous wheel and the longitudinal driving driven synchronous wheel respectively; one side of the longitudinal driving synchronous belt is connected with one end of the cross beam.
6. The fingerprint chip testing device of claim 1, 2, 3 or 4, wherein: the transverse driving device comprises: the transverse driving synchronous belt is in transmission connection with the transverse driving synchronous wheel and the transverse driving driven synchronous wheel respectively; one side of the transverse driving synchronous belt is connected with the transverse moving seat.
7. A testing method of a fingerprint chip testing device, wherein the fingerprint chip testing device is the fingerprint chip testing device of claim 3; the method is characterized in that: (1) placing the fingerprint chip in the corresponding containing hole of the fingerprint chip seat, and connecting the fingerprint chip seat with the bottom surface of the containing groove through screws; the pressure of the fake finger test pressure reducing valve is adjusted, the fake finger test pressure adjusting spring is in threaded connection with a corresponding adjusting screw hole through the adjusting screw rod, and the pre-pressure of the fake finger test pressure adjusting spring is finely adjusted, so that the downward pressure of the tested fake finger corresponds to the specification of the tested fingerprint chip; adjusting the pressure of the output signal testing pressure reducing valve, connecting the pressure with a corresponding adjusting screw hole through an adjusting screw rod in a threaded manner, and finely adjusting the pre-pressure of the output signal testing pressure regulating spring to enable the downward pressure of the output signal testing pressure head to correspond to the printed circuit adapter plate matched with the tested fingerprint chip; (2) the longitudinal driving device drives the beam to move longitudinally, so that the testing fake finger is opposite to the upper end of the fingerprint chip, and the output signal testing pressure head is opposite to the upper end of the printed circuit adapter plate; (3) a piston rod of the fake finger testing cylinder extends out, the fake finger testing transfer block, the fake finger testing vertical guide rail and the fake finger testing head move downwards, the fake finger presses the upper end of the fingerprint chip, and the pressure sensor transmits the measured pressure value to the controller; the piston rod of the output signal testing cylinder extends out, the output signal testing transfer block, the output signal testing vertical guide rail and the output signal testing assembly move downwards, and the output signal testing pressure head presses the upper end of the printed circuit transfer plate and transmits a measured output signal value to the controller; (4) according to different specifications of the tested fingerprint chips, the specifications of a plurality of tested fake fingers arranged on the fake finger testing head correspond to the specifications of the tested fingerprint chips one by one; when the fingerprint chips with different specifications are replaced, replacing the fingerprint chip holder according to the specification of the tested fingerprint chip, and placing the fingerprint chip in the accommodating groove; the transverse driving device drives the transverse moving seat, the false finger testing vertical guide rail and the false finger testing head to move transversely, so that the testing false finger corresponding to the specification of the tested fingerprint chip moves to the testing position, and the testing false finger is opposite to the upper end of the tested fingerprint chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710752466.0A CN107677950B (en) | 2017-08-28 | 2017-08-28 | Fingerprint chip testing device and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710752466.0A CN107677950B (en) | 2017-08-28 | 2017-08-28 | Fingerprint chip testing device and testing method |
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| CN108458927B (en) * | 2018-03-05 | 2020-05-26 | 杭州长川科技股份有限公司 | Fingerprint module self-cleaning testing mechanism and self-cleaning testing method |
| CN108693423A (en) * | 2018-05-16 | 2018-10-23 | 江西合力泰科技有限公司 | A kind of easy fingerprint module device for testing functions |
| CN109376650B (en) * | 2018-10-23 | 2020-09-25 | 杭州长川科技股份有限公司 | Optical fingerprint identification module detection device and detection method |
| CN111965526B (en) * | 2020-08-24 | 2023-01-17 | 深圳市华力宇电子科技有限公司 | Fingerprint chip testing device with fake finger mechanism |
| CN112014720B (en) * | 2020-08-27 | 2023-05-30 | 青岛歌尔微电子研究院有限公司 | Heart rate chip testing equipment |
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| CN105717396A (en) * | 2016-03-29 | 2016-06-29 | 东莞华贝电子科技有限公司 | Fingerprint module testing device |
| CN206193122U (en) * | 2016-10-17 | 2017-05-24 | 深圳格兰达智能装备股份有限公司 | Fingerprint testing arrangement |
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| CN207268768U (en) * | 2017-08-28 | 2018-04-24 | 杭州长川科技股份有限公司 | Fingerprint apparatus for testing chip |
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