CN110726894A - Automatic testing device and method for multi-key electronic equipment - Google Patents
Automatic testing device and method for multi-key electronic equipment Download PDFInfo
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- CN110726894A CN110726894A CN201911142660.2A CN201911142660A CN110726894A CN 110726894 A CN110726894 A CN 110726894A CN 201911142660 A CN201911142660 A CN 201911142660A CN 110726894 A CN110726894 A CN 110726894A
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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
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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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
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Abstract
The invention relates to an automatic testing device and method for multi-key electronic equipment, belongs to the field of electronic equipment type test and solves the problem that the conventional device and method cannot automatically test electronic equipment with multiple test points. The automatic testing device comprises a mechanical arm unit and a control unit, wherein the mechanical arm unit comprises a stepping motor, a limit switch, a lead screw, a sliding table bracket and an electromagnet; the control unit comprises a stepping motor control driving module and an industrial personal computer; the sliding table support is respectively connected with the stepping motor, the limit switch and the lead screw, the lead screw is connected with the sliding table, the stepping motor control driving module is respectively electrically connected with the stepping motor and the limit switch, and the industrial personal computer is respectively electrically connected with the stepping motor control driving module and the electromagnet. The invention controls the electromagnet to reach any position covered by the mechanical arm unit through the industrial personal computer, controls the iron core of the electromagnet to simulate a human hand, and realizes the automatic test operation of the tested object.
Description
Technical Field
The invention relates to the technical field of electronic equipment type test, in particular to an automatic test device and method for multi-key electronic equipment.
Background
Before electronic equipment is put into use, the electronic equipment needs to pass test items such as product testing, equipment identification and factory inspection. Among them, the type test is an important component, and the test may need to pass the test items of high/low temperature, alternating damp and hot, temperature and humidity integration, EMC (Electro Magnetic Compatibility), vibration, shock resistance, etc. according to the product characteristics. When the tested product comprises a key, a keyboard, a touch screen and other parts, due to the rigor of the test environment, if the tested product needs to be electrified and operated in the environment with the temperature of 65 ℃ and the humidity of 95%, the test is difficult to realize.
The existing solution is that a tester wears protective equipment and enters a test stress environment to test or adopts an electromagnet to simulate a human finger to operate. Although the former has protective equipment, high temperature, high humidity, electromagnetic radiation and harmful gas all cause harm to human bodies, and when personnel enter a stress environment, the test needs to be interrupted; the latter can only test a certain test point or a certain key, and the operation of complex logic cannot be completed.
Disclosure of Invention
In view of the foregoing analysis, embodiments of the present invention are directed to an automatic testing apparatus and method for multi-key electronic devices, so as to solve the problem that an automatic test cannot be performed on an electronic device with a keyboard, a touch screen, and keys having a plurality of test points under the harsh stress condition of the existing type of test.
On one hand, the embodiment of the invention provides an automatic testing device for multi-key electronic equipment, which comprises a mechanical arm unit and a control unit, wherein the mechanical arm unit comprises a stepping motor, a limit switch, a lead screw, a sliding table bracket and an electromagnet; the control unit comprises a stepping motor control driving module and an industrial personal computer; the sliding table support is respectively connected with the stepping motor, the limit switch and the lead screw, the lead screw is connected with the sliding table, the stepping motor control driving module is respectively electrically connected with the stepping motor and the limit switch, and the industrial personal computer is respectively electrically connected with the stepping motor control driving module and the electromagnet.
Furthermore, the inside hydrophobic class grease that fills of step motor, two run-to-run baffles are installed to step motor's tip, the baffle is used for restricting hydrophobic class grease in the recess that step motor and lead screw formed.
Further, the stepping motor comprises an X-axis stepping motor and a Y-axis stepping motor, the limit switch comprises an X-axis limit switch and a Y-axis limit switch, the lead screw comprises an X-axis lead screw and a Y-axis lead screw, the sliding table comprises an X-axis sliding table and a Y-axis sliding table, and the sliding table support comprises an X-axis sliding table support and a Y-axis sliding table support; the Y-axis sliding table support is connected with the X-axis sliding table, the Y-axis sliding table support is perpendicular to the X-axis sliding table support, and the electromagnet is connected with the Y-axis sliding table.
Further, the stepping motor control driving module comprises an X-axis stepping motor control driving module and a Y-axis stepping motor control driving module; the industrial personal computer (22) controls the X-axis stepping motor (111) through the X-axis stepping motor control driving module (211); the industrial personal computer (22) controls the Y-axis stepping motor (112) through the Y-axis stepping motor control driving module (212).
Further, the stepping motor is a two-phase direct current stepping motor, and the torque of the stepping motor is 400g cm.
Furthermore, the electromagnet is a tubular electromagnet, the iron core impact force of the electromagnet is 2-50N, and the stroke is 0-15 mm.
Further, the stepping motor, the lead screw and the slide table can operate in a temperature environment of not less than 70 ℃.
Further, the automatic testing device also comprises a mounting rack, and the mounting rack is an aluminum alloy frame; the mounting bracket includes slip table location frame, bearing and magnet mounting groove.
Further, the X-axis sliding table bracket is fixedly connected with the mounting frame; one end of the Y-axis sliding table bracket is embedded in the sliding table positioning frame; the mounting bracket is provided with a plurality of magnet mounting grooves, and magnets are arranged in the magnet mounting grooves.
An automatic test method for a multi-key electronic device, the method being performed using the automatic test apparatus of claims 1 to 9, the steps comprising:
s1, electrifying the automatic testing device:
the electromagnet (16) is reset, the industrial personal computer (22) receives a feedback signal, and the stepping motor (11) stops running;
s2, positioning the object to be measured:
the industrial personal computer (22) calls the target position coordinates of the object to be measured, the stepping motor (11) operates, and the electromagnet (16) reaches the target position of the object to be measured;
s3, testing the tested object:
the electromagnet (16) is electrified and contacts the measured object, and the electromagnet (16) loses power and leaves the measured object;
s4, test other positions:
repeating the steps S2-S3, and testing other positions of the tested object;
s5, resetting the automatic testing device:
the electromagnet (16) is reset.
Compared with the prior art, the invention can realize at least one of the following beneficial effects:
(1) the X-axis stepping motor and the Y-axis stepping motor are respectively controlled to move by the X-axis stepping motor control driving module and the Y-axis stepping motor control driving module through the industrial personal computer, and the electromagnet is connected with the Y-axis sliding table, so that the electromagnet can run to any position covered by the mechanical arm unit, and the test of different positions of the tested object is realized;
(2) the industrial personal computer is electrically connected with the electromagnet, and the iron core of the electromagnet simulates a human hand through the power on and power off control of the electromagnet, so that the automatic test operation of the tested object is realized;
(3) the stepping motor, the lead screw and the sliding table can operate in a temperature environment of 70 ℃ to cover the operating temperature of an incubator test, so that the automatic testing device can normally operate in the incubator test environment, and the accuracy of a test result is ensured;
(4) the inside of the stepping motor is sealed by adopting the hydrophobic heat-conducting grease and the limiting baffle, so that the automatic testing device can normally run in a high-temperature and high-humidity testing environment, and the accuracy of a testing result is ensured.
In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a schematic diagram of the robot arm unit and the control unit of the automatic test apparatus;
FIG. 2 is a schematic view of a robot arm unit and a mounting frame connection structure of the automatic test apparatus;
FIG. 3 is a schematic diagram of a robot arm unit of the automatic test apparatus;
FIG. 4 is a schematic diagram of a positioning frame of the slide table of the automatic test apparatus;
FIG. 5 is a left side view of a positioning frame of the slide table of the automatic test apparatus;
fig. 6 is a schematic view of the installation of the upper baffle of the stepping motor of the automatic testing device.
Reference numerals:
111-X axis stepper motors; 112-Y axis stepper motors; 113-a baffle; a 121-X axis limit switch; 122-Y axis limit switches; 131-X axis lead screw; a 132-Y axis lead screw; 141-X axis slide table; 142-Y axis slide; 151-X axis slip table mount; 152-Y axis skid mounts; 16-an electromagnet; 211-X axis stepping motor control drive module; the 212-Y axis stepping motor controls the driving module; 22-an industrial personal computer; 31-a slipway positioning frame; 32-a bearing; 33-magnet mounting groove.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
A specific embodiment of the present invention, as shown in fig. 1-6, discloses an automatic testing apparatus and method for multi-key electronic equipment, comprising a mechanical arm unit and a control unit, wherein the mechanical arm unit comprises a stepping motor, a limit switch, a lead screw, a sliding table bracket and an electromagnet 16; the control unit comprises a stepping motor control driving module and an industrial personal computer 22; the stepping motor is connected with one end of the sliding table bracket through a bolt, illustratively, the sliding table bracket is made of aluminum profiles, and the stepping motor is installed on an installation plate at one end of the sliding table bracket through four bolts; the limit switch is arranged on the plane of the sliding table support and is close to the stepping motor, and specifically, the limit switch is fixed on the sliding table support by using a screw or glue; the lead screw passes two terminal surfaces of slip table support and is connected with step motor, and the lead screw passes through threaded connection with the slip table, and specifically, the slip table is the cuboid, and the screw hole runs through the two symmetrical sides of slip table, and the lead screw setting is in the threaded hole. In order to realize the control of the stepping motor, the stepping motor is electrically connected with the stepping motor control driving module, the limit switch and the stepping motor control driving module are connected with the industrial personal computer 22, and further, the industrial personal computer 22 is electrically connected with the electromagnet 16, collects the position information of the electromagnet 16 and controls the power on/off of the electromagnet 16.
Further, the stepping motor comprises an X-axis stepping motor 111 and a Y-axis stepping motor 112, the limit switch comprises an X-axis limit switch 121 and a Y-axis limit switch 122, the lead screw comprises an X-axis lead screw 131 and a Y-axis lead screw 132, the sliding table comprises an X-axis sliding table 141 and a Y-axis sliding table 142, and the sliding table support comprises an X-axis sliding table support 151 and a Y-axis sliding table support 152; it should be noted that the X-axis stepping motor 111, the X-axis limit switch 121, the X-axis lead screw 131, the X-axis sliding table 141, and the X-axis sliding table support 151 are correspondingly installed, and the Y-axis stepping motor 112, the Y-axis limit switch 122, the Y-axis lead screw 132, the Y-axis sliding table 142, and the Y-axis sliding table support 152 are correspondingly installed, specifically, a Y-axis linear slider guide is formed. When testing the tested object, in order to traverse all the tested objects, the Y-axis sliding table bracket 152 is connected with the X-axis sliding table 141 through a bolt, so that the Y-axis sliding table bracket 152 is perpendicular to the X-axis sliding table bracket 151, and the electromagnet 16 is connected with the Y-axis sliding table 142.
The stepping motor control driving module converts a control signal of the industrial personal computer into a driving signal of a stepping motor, and comprises an X-axis stepping motor control driving module 211 and a Y-axis stepping motor control driving module 212; the industrial personal computer 22 controls the X-axis stepping motor 111 and the Y-axis stepping motor 112 through an X-axis stepping motor control driving module 211 and a Y-axis stepping motor control driving module 212, respectively.
In this embodiment, the X-axis stepping motor 111, the X-axis lead screw 131, and the X-axis sliding table support 151 are fixed to the object to be tested, the Y-axis sliding table support 152 is fixed to the X-axis sliding table 141, the electromagnet 16 is fixed to the Y-axis sliding table 142, the X-axis stepping motor 111 is driven by the X-axis stepping motor control driving module 211, and the X-axis lead screw 131 and the X-axis sliding table 141 are further driven to move, so as to achieve precise movement of the Y-axis sliding table 142 and the electromagnet 16 in the X-axis direction, and further, the Y-axis stepping motor control driving module 212 drives the Y-axis stepping motor 112, and further drives the Y-axis lead screw 132 and the Y-axis sliding table 142 to move, so as to achieve precise movement of the electromagnet 16 in the Y-axis direction, and ensure precise movement of the electromagnet 16 to a specified position by matching movement in the X.
In order to isolate the inside of the stepping motor from water vapor in the external environment, hydrophobic grease is filled in the stepping motor, the hydrophobic grease is limited in a groove formed by the stepping motor and a lead screw by using two split baffles 113, the inside of the stepping motor is sealed, the automatic testing device can normally work in a high-temperature and high-humidity testing environment, and the accuracy of a testing result is ensured.
Further, considering that the mass of the electromagnet 16 is 300g, and the total mass of the Y-axis stepping motor 112 and the electromagnet 16 is about 550g, in the case of being matched with a lead screw with a thread pitch of 1mm, the torques of the X-axis stepping motor 11 and the Y-axis stepping motor 12 are not less than 400 g-cm, and sufficient driving force and positional accuracy with an error of ± 0.5mm can be ensured.
In order to realize the touch test of the keys, the touch screen and the keyboard of the tested object, the electromagnet 16 is a tubular electromagnet, and the iron core of the electromagnet 16 simulates a human hand to test the tested object by controlling the electrification and the loss of the tubular electromagnet; when the electromagnet 16 is not electrified, the iron core of the electromagnet 16 is contracted, that is, the iron core is in a reset state, when the electromagnet 16 is electrified, the iron core of the electromagnet 16 is popped up to contact with a tested object, so that a human hand is simulated to complete the test of the multi-key electronic device, when the iron core of the electromagnet 16 contacts with the tested object, the tested object is illustratively a key of a keyboard, when the key of the keyboard is pressed, the key generates an electric signal to be fed back to a system (not shown in the figure), which indicates that the key is qualified, and if the key is not pressed, the electric signal is not generated, which indicates that the key is unqualified.
It should be noted that, considering that the object to be tested may be a key on a nuclear power safety-class disk, the key is effectively operated according to the test, and the stroke of not less than 10cm and the pressing force of not less than 8N need to be ensured, and according to the product specification, the maximum pressing force which can be borne by the key of this type is not less than 50N; therefore, in order to ensure the effectiveness of the test, the iron core of the electromagnet 16 is set to have the impulse force of 2-50N and the stroke of 0-15 mm, and the output torque force of the electromagnet can be adjusted by adjusting the power supply voltage.
In consideration of harsh high-temperature and high-humidity type test environments, in order to ensure that the automatic testing device can operate in the harsh test environments and obtain accurate test results, the stepping motor, the lead screw and the sliding table are arranged to resist the high temperature of 70 ℃, namely, the stepping motor, the lead screw and the sliding table can still normally operate at the high temperature of 70 ℃, the reliability of the automatic testing device in the harsh test environments is ensured, and the problem that the multi-key electronic equipment cannot be tested or the precision of the test results cannot be ensured due to the harsh test environments is avoided.
The automatic testing device also comprises a mounting rack, and particularly, the mounting rack is an aluminum alloy frame; the mounting bracket includes a slide positioning frame 31, a bearing 32, and a magnet mounting groove 33.
The X-axis sliding table bracket 151 is fixedly connected with the mounting frame; one end of the Y-axis sliding table bracket 152 is embedded in the sliding table positioning frame 31; the mounting bracket is equipped with a plurality of magnet mounting grooves 33, specifically, magnet mounting groove 33 sets up to 4, and magnet setting is in magnet mounting groove 33, and magnet is the strong magnet that the diameter is no longer than 10mm, adopts the method of stack magnet to strengthen the suction, adaptable shock-proof test's stress. The testing device of the embodiment adopts the strong magnet to fix the tested object on the steel table top, and has the advantages that the enough installation strength is ensured under the condition of not damaging the tested table top; under the condition that the slope of the table top is smaller than 30 degrees, the automatic testing device can not generate displacement which affects the test under the general earthquake-resistant frequency spectrum of the nuclear power plant.
In this embodiment, the test method using the automatic test apparatus includes:
s1, electrifying the automatic testing device:
the X-axis stepping motor 111 and the Y-axis stepping motor 112 operate to respectively drive the X-axis sliding table 141 and the Y-axis sliding table 142 to touch the X-axis limit switch 121 and the Y-axis limit switch 122, so that the Y-axis sliding table 142 drives the electromagnet 16 to reach a reset position, and the electromagnet 16 resets; the X-axis limit switch 121 and the Y-axis limit switch 122 respectively feed back electric signals to the X-axis stepping motor control driving module 211 and the Y-axis stepping motor control driving module 212 to stop the operation of the X-axis stepping motor 111 and the Y-axis stepping motor 112;
s2, positioning the object to be measured:
the industrial personal computer 22 calls the stored target position coordinates of the measured object; the industrial personal computer 22 respectively sends control signals to the X-axis stepping motor control driving module 211 and the Y-axis stepping motor control driving module 212 to drive the X-axis stepping motor 111 and the Y-axis stepping motor 112 to operate, so that the electromagnet 16 reaches the target position of the object to be measured;
s3, testing the tested object:
electrifying the electromagnet 16, popping up an iron core of the electromagnet 16, contacting the measured object with the iron core, keeping for 100 milliseconds, deenergizing the electromagnet 16, and leaving the iron core of the electromagnet 16 away from the measured object;
s4, test other positions:
repeating the steps S2-S3, and testing other positions of the tested object;
s5, resetting the automatic testing device:
the X-axis stepping motor 111 and the Y-axis stepping motor 112 operate to respectively drive the X-axis sliding table 141 and the Y-axis sliding table 142 to touch the X-axis limit switch 121 and the Y-axis limit switch 122, and the electromagnet 16 resets.
It should be noted that the iron core of the electromagnet 16 contacts the measured object for 100 milliseconds, on one hand, the operation of the measured object by the human hand, such as pressing, is effectively simulated; on the other hand, the jitter generated by the field interference electric signal can be removed, and the accuracy of the test result is ensured.
In the embodiment, the control unit is adopted to automatically control the mechanical arm unit, so that the test of the tested object is realized, and compared with a mode that a test person wears protective equipment and enters a test stress environment to perform the test, the time that a test executive person enters a severe test environment such as a warm box is reduced by about 70%, the personnel protection is enhanced, the test efficiency is improved, and the technical problem that the personnel cannot operate the equipment to perform the test in a mechanical vibration test is solved; compared with the mode that the electromagnet is adopted to simulate the human finger to only carry out a certain test point or a certain key, and the operation cannot be completed for the operation of complex logic, the control unit is adopted to control the mechanical arm unit to complete continuous automatic test on any position of the tested object, so that the test efficiency is improved.
It should be noted that the electrical principle of the automatic test device is as follows: the industrial personal computer 22 is provided with 2 universal serial ports which are respectively used for controlling an X-axis stepping motor and a Y-axis stepping motor; the industrial personal computer 22 is provided with at least 16 contact type digital quantity signal acquisition channels for a limit switch channel and an external control signal acquisition channel; the industrial control computer 22 has not less than 8 contact type digital quantity output channels for the control channel of the electromagnet 16. The control signal of the industrial personal computer 22 is converted into the driving signals of the X-axis stepping motor 111 and the Y-axis stepping motor 112 through the two stepping motor control driving modules. The programming principle of the controller is as follows: after the automatic testing device is powered on, the X-axis stepping motor 111 and the Y-axis stepping motor 112 drive the sliding table and the electromagnet 16 to respectively reach the negative limit of the X-axis and the negative limit of the Y-axis, that is, the X-axis limit switch 121 and the Y-axis limit switch 122 respectively output feedback signals to the industrial personal computer 22 through two digital quantity acquisition channels, so that the stepping motor stops running, the stop position of the stepping motor serves as the reference coordinate origin of all key positions, and the process serves as the resetting of the electromagnet 16. Through programming, after the industrial personal computer 22 enters the running mode, the program can continuously scan 8 digital quantity acquisition ports, and each digital quantity acquisition port signal corresponds to the combined operation of the industrial personal computer 22 on a sequence of keys of the object to be tested. When the closing of any port is detected, the corresponding sliding table and the key operation are triggered, the reset subprogram executes the reset function, and the electromagnet 16 is displaced to a specified preset position, namely the origin of coordinates; the electromagnet control program executes the operation of the electromagnet, and simulates the operation of a human finger on a key through the electrification → time delay → power loss control of the electromagnet; when a certain external trigger signal, for example, detects a control signal for the n port of the digital quantity acquisition channel, the key operation of the sequence is executed according to a preset sequence, that is: electromagnet 16 reset → electromagnet 16 reaches position 1 → electromagnet 16 presses a button to test → electromagnet 16 reaches position 2 → electromagnet 16 presses a button to test → electromagnet 16 reaches position 3 → electromagnet 16 presses a button to test → … … → electromagnet 16 reaches position n → electromagnet 16 presses a button to test → electromagnet 16 resets; after a certain sequence is finished, the program repeatedly scans the port and waits for the next digital quantity acquisition channel to acquire a control command.
An industrial personal computer is used for controlling an X-axis stepping motor and a Y-axis stepping motor to run, an electromagnet is driven to reach any position covered by a mechanical arm unit, the power gain and loss of the electromagnet are controlled through the industrial personal computer, an iron core of the electromagnet simulates a human hand, automatic test operation on a tested object is realized, and the problem that automatic test cannot be executed on electronic equipment with a keyboard, a touch screen and keys with a plurality of test points is solved; the stepping motor, the lead screw and the sliding table can resist the high temperature of 70 ℃, so that the automatic testing device has the capability of normally running in the type test stress (high temperature, high humidity, anti-seismic test and the like) environment, and the normal running of the test in the type test environment is ensured; under the condition of not damaging the tested steel table top, the strong magnet is fixed with the tested steel table top, so that the steel table top still has enough installation strength under the stress of an anti-seismic test and the like.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. An automatic testing device for multi-key electronic equipment is characterized by comprising a mechanical arm unit and a control unit, wherein the mechanical arm unit comprises a stepping motor, a limit switch, a screw rod, a sliding table bracket and an electromagnet (16); the control unit comprises a stepping motor control driving module and an industrial personal computer (22); the sliding table support is respectively connected with the stepping motor, the limit switch and the lead screw, the lead screw is connected with the sliding table, the stepping motor control driving module is respectively electrically connected with the stepping motor and the limit switch, and the industrial personal computer (22) is respectively electrically connected with the stepping motor control driving module and the electromagnet (16).
2. The automatic testing device for the multi-key electronic equipment as claimed in claim 1, wherein the interior of the stepping motor is filled with hydrophobic grease, two split baffles (113) are mounted at the end of the stepping motor, and the baffles (113) are used for limiting the hydrophobic grease in a groove formed by the stepping motor and the lead screw.
3. The automatic testing device for multi-key electronic equipment according to claim 1, wherein the stepping motor comprises an X-axis stepping motor (111) and a Y-axis stepping motor (112), the limit switch comprises an X-axis limit switch (121) and a Y-axis limit switch (122), the lead screw comprises an X-axis lead screw (131) and a Y-axis lead screw (132), the sliding table comprises an X-axis sliding table (141) and a Y-axis sliding table (142), and the sliding table support comprises an X-axis sliding table support (151) and a Y-axis sliding table support (152); y axle slip table support (152) are connected with X axle slip table (141), Y axle slip table support (152) set up with X axle slip table support (151) is perpendicular, electro-magnet (16) are connected with Y axle slip table (142).
4. The automatic test device for multi-key electronic equipment according to claim 2, wherein said stepping motor control driving module comprises an X-axis stepping motor control driving module (211) and a Y-axis stepping motor control driving module (212); the industrial personal computer (22) controls the X-axis stepping motor (111) through the X-axis stepping motor control driving module (211); the industrial personal computer (22) controls the Y-axis stepping motor (112) through the Y-axis stepping motor control driving module (212).
5. The automatic testing device for multi-key electronic equipment according to claim 4, wherein said stepping motor is a two-phase DC stepping motor, and the torque of the stepping motor is 400 g-cm.
6. The automatic testing device for the multi-key electronic equipment as claimed in claim 5, wherein the electromagnet (16) is a tubular electromagnet, the core impulse of the electromagnet (16) is 2-50N, and the stroke is 0-15 mm.
7. The automatic testing device for multi-key electronic equipment according to claim 6, wherein the stepping motor, the lead screw and the slide table can operate in a temperature environment of not less than 70 ℃.
8. The automatic test device for multi-key electronic equipment according to claim 7, further comprising a mounting frame, wherein the mounting frame is an aluminum alloy frame; the mounting bracket comprises a sliding table positioning frame (31), a bearing (32) and a magnet mounting groove (33).
9. The automatic testing device for multi-key electronic equipment according to claim 8, wherein the X-axis sliding table bracket (151) is fixedly connected with a mounting frame; one end of the Y-axis sliding table bracket (152) is embedded in the sliding table positioning frame (31); the mounting bracket is provided with a plurality of magnet mounting grooves (33), and magnets are arranged in the magnet mounting grooves (33).
10. An automatic test method for a multi-key electronic device, characterized in that it is performed using the automatic test apparatus of claims 1 to 9, the steps comprising:
s1, electrifying the automatic testing device:
the electromagnet (16) is reset, the industrial personal computer (22) receives a feedback signal, and the stepping motor (11) stops running;
s2, positioning the object to be measured:
the industrial personal computer (22) calls the target position coordinates of the object to be measured, the stepping motor (11) operates, and the electromagnet (16) reaches the target position of the object to be measured;
s3, testing the tested object:
the electromagnet (16) is electrified and contacts the measured object, and the electromagnet (16) loses power and leaves the measured object;
s4, test other positions:
repeating the steps S2-S3, and testing other positions of the tested object;
s5, resetting the automatic testing device:
the electromagnet (16) is reset.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305360A (en) * | 2020-11-02 | 2021-02-02 | 吉林大学 | Reliability test device and method for operation panel of numerical control machine tool |
| CN113329148A (en) * | 2021-05-07 | 2021-08-31 | 浙江保融科技股份有限公司 | Intelligent mechanical arm equipment for simulating manual operation UK |
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