CN101793625B - Detection method of automobile air conditioning switch - Google Patents

Abstract

The invention relates to a detection method of an automobile air conditioning switch, comprising the following steps: an air conditioning switch to be tested is loaded in on a test floor assembled by a voltage drop meter, a torquemeter and a gear control stepping motor; the shaft of the gear control stepping motor rotates to a preset angle to install a mechanical head clamping trough; before the gear control stepping motor vertically falls, whether the contact voltage drop of a switch to be tested is the same as the contact voltage drop corresponding to the initial switch gear or not is detected, if yes, the gear control stepping motor is permitted to fall to clamp the switch to be tested, otherwise the gear control stepping motor is not permitted to fall; the gear control stepping motor rotates the air conditioning switch to be tested to a preset standard position and a plurality of microspur positions near the preset standard position by the mechanical head clamping trough to measure to obtain a voltage drop data sequence and remove unreasonable data so as to obtain the voltage drop value of the preset standard position. The invention greatly lowers damage caused by the misoperation of the air conditioning switch during factory test.

Description

A kind of detection method of Automobile air conditioner switch

Technical field

The invention belongs to the automotive electronics electrical technology field, relate in particular to a kind of detection method of Automobile air conditioner switch.

Background technology

Switch on the air conditioning for automobiles is the great auto parts machinery product of a kind of volume of production and marketing, even all can there be multiple model in same manufacturer.Producer is on an integrated test board, to carry out various Automobile air conditioner switches being done when test of dispatching from the factory.Common these devices such as test board meeting integrated voltage drop meter, torque meter and stepper motor, the Automobile air conditioner switch product all has the 4-5 shelves usually, and the major function of air-conditioning switch test instrumentation is the function of each gear of detector switch, the torsion in pressure drop and the rotation process.Detailed process mainly is, the control through test board is blocked by slowdown monitoring switch with at first control step motor vertical drop of single-chip microcomputer, begins rotational angle then, drives gear train synchronization action together, thus CS location accurately.One grade of revolution just check once the function of this gear and the pressure drop at switch contacts place, and whether the torsion in the rotation process meets the requirements.

Because the air-conditioning switch kind is more, each product function has nothing in common with each other, and the test at connector place is also different with draw-in groove, and promptly every kind of draw-in groove is to a kind of specific switch product.In test, be to select to test which kind of product through SS actually.Though these switch functions are different, except that connector, it is very similar that outward appearance seems.So just be easy to generate a problem; Promptly because the switch outward appearance is basic identical, when in enormous quantities the operation, the situation that the tester has taken product by mistake occurs through regular meeting, this moment is because connector is different; After pressing the test starting button; Stepper motor at first can vertical drop, the rapid speed of whereabouts, and strength is bigger.When switch and the draw-in groove of test did not match, because draw-in groove is different, switch tended to be stuck in draw-in groove, needed take the at first big strength of the utmost point and just can take out.Test instrumentation in the past can't address this problem, and just operating personnel is strengthened management, and requires operating personnel must guarantee all that each time product do not take by mistake.

In the reality, also there is a kind of situation, promptly mated by slowdown monitoring switch and draw-in groove; But the gear of switch is not the initial position that is in an acquiescence, when the stepper motor vertical drop, still can cause switch stuck; Damage product, the workshop this situation repeatedly occurs in test process.The existing method of testing of this problem still can't solve.Can only lean on tester's carefulness to remedy.

Summary of the invention

The detection method that the purpose of this invention is to provide a kind of Automobile air conditioner switch solves Automobile air conditioner switch ubiquitous test errors operation that causes damage of product easily in the test of dispatching from the factory.

Technical scheme of the present invention is that a kind of detection method of Automobile air conditioner switch comprises step:

The tested air-conditioning switch of on the integrated test board of voltage drop meter, torque meter and gear control step motor, packing into;

Said gear control step motor shaft rotates to a predetermined angle machinery draw-in groove is installed;

Before the vertical drop of said gear control step motor; Whether detection is identical with the contact drop of preset initial switch gear correspondence by the contact drop of slowdown monitoring switch; If identically then allow gear control step motor to fall to block said by slowdown monitoring switch, otherwise said gear control step motor does not allow to fall;

Near said gear control step motor turns to said tested air-conditioning switch about one pre-set criteria position and this pre-set criteria position through a machinery draw-in groove some microspurs position; Measure to obtain a pressure drop data sequence, reject the voltage drop value that obtains this pre-set criteria position after irrational data.

The present invention judges and relevant control through in existing method of testing, having added error correction, greatly reduced air-conditioning switch in the test of dispatching from the factory because the damage that misoperation causes.

Description of drawings

Fig. 1 is a method of testing schematic flow sheet in one embodiment of the invention

Embodiment

The detection method of Automobile air conditioner switch of the present invention, as shown in Figure 1, comprise step: the tested air-conditioning switch of on the integrated test board of voltage drop meter, torque meter and gear control step motor, packing into; Said gear control step motor shaft rotates to a predetermined angle machinery draw-in groove is installed; Before the vertical drop of said gear control step motor; Whether detection is identical with the contact drop of preset initial switch gear correspondence by the contact drop of slowdown monitoring switch; If identically then allow gear control step motor to fall to block said by slowdown monitoring switch, otherwise said gear control step motor does not allow to fall; Near said gear control step motor turns to said tested air-conditioning switch about one pre-set criteria position and this pre-set criteria position through a machinery draw-in groove some microspurs position; Measure to obtain a pressure drop data sequence, reject the voltage drop value that obtains this pre-set criteria position after irrational data.

For example, the air-conditioning switch of Valeo has 6 kinds of products, and each product respectively has the 4-5 shelves, and the major function of air-conditioning switch measuring instrument is the function of each gear of detector switch, the torsion in pressure drop and the rotation process.Mainly be through at first control step motor vertical drop of single-chip microcomputer, block switch, begin rotational angle then, drive gear train synchronization action together, thereby accurately CS is located.One grade of revolution, the just once function of this gear and the pressure drop at switch contacts place of inspection, and whether the torsion in the rotation process meet the requirements,

Because air-conditioning switch has 6 kinds, each product function has nothing in common with each other, and the draw-in groove at connector place is also different, selects to test which kind of product through SS actually; These product appearances are basic identical except that connector, but function has a great difference, because outward appearance is basic identical; When in enormous quantities the operation, the situation that the tester has taken product by mistake occurs through regular meeting, this moment is because connector is different, press start button after; Stepper motor at first can vertical drop, the rapid speed of whereabouts, and strength is bigger.Because draw-in groove is different, product tends to be stuck,, need the at first big strength of the expense utmost point just can take out.Test instrumentation is in the past strengthened management to operating personnel for addressing this problem often, requires operating personnel must guarantee all that each time product do not take by mistake; Under the prerequisite of not taking by mistake, also necessary with hand inspection one time simultaneously, the initial gear when guaranteeing each product detection is in leftmost position; Even otherwise product do not take by mistake, but the gear of product is selected mistake, during the motor vertical drop; Still can cause switch stuck; Damage product, the workshop this situation repeatedly occurs in test process.Find out solution now; Because these products are all inequality in the contact drop of each grade of initial position; Before the motor vertical drop; Whether the contact drop that detects earlier these products is identical with the selected switch of SS, if identically then allow motor to fall to block switch, otherwise motor does not allow to fall.Can avoid switch stuck effectively like this, improve throughput rate greatly

Whether each switch all must detect contact drop when forwarding a certain grade to and meet the requirements; Measuring instrument rotates through the stepper motor coupled switch and locatees, and the degree of accuracy of stepper motor is quite high, and the position of rotating is each time all fixed; But switch is because technological problems; All there is discreteness, certain mechanical deviation is arranged, so just have measuring error.So the way through software is eliminated error; Be that stepper motor is when turning to a certain gear; The pressure drops of surveying several points are used for and standard control more about near this gear, if the machinery of product gear angle has bigger deviation; The data that then detect must have the data of several points obviously to exceed standard, and then these data can not be selected for use.Remaining data are exactly satisfactory.

Because test instrumentation is whenever to click the startup button to carry out full-automatic testing one time; The product that test is good is reminded the fine or not result of operating personnel's product test end and product through different sound and light alarm forms; But visual persistence appears in operating personnel easily in operating process; And test result is put in the bad product heap for good product, in also can the product that bad product is put into being piled.So test instrumentation has increased a reset key, after test is accomplished, if not only acousto-optic hint of faulty item is arranged; And the way through software, making to start button and press invalidly, product can't continue test; Pin product through control physical construction simultaneously, product can't be taken down, only press reset key; Just can take out faulty item, press start key again, just can test next time.

Because air-conditioning switch has multiple product, when surveying Different products, often need change different mechanical heads; Because the problem of structure, the machinery head must conform to the initial position of product at the beginning, and the screw eye position of machinery head must be back to replacing person in initial position at this moment; Can't tighten; When the stepper motor rotating shaft was rotated, the machinery head can't rotate synchronously, and stepper motor is high-precision; Therefore must guarantee synchronously with the hands by hand also that the rotating shaft of machinery head and stepper motor turns to a suitable position synchronously, tightens the screw again.Often to expend for a long time manual setting repeatedly when therefore changing mechanical.Therefore button of special increase, when pressing, stepper motor rotates a place that tightens the screw the most suitable at first automatically; Fall then, because the high precision of stepper motor has guaranteed that mechanical head conforms to the initial position of product; Tighten the screw and get final product this moment, and a few minutes are replaceable good.

Claims (1)

1. the detection method of an Automobile air conditioner switch is characterized in that, comprises step:

The tested air-conditioning switch of on the integrated test board of voltage drop meter, torque meter and gear control step motor, packing into;

Said gear control step motor shaft rotates to a predetermined angle machinery draw-in groove is installed;

Before the vertical drop of said gear control step motor; Whether the contact drop that detects said tested air-conditioning switch is identical with the contact drop of preset initial switch gear correspondence; If identically then allow gear control step motor to fall to block said tested air-conditioning switch, otherwise said gear control step motor does not allow to fall;

Near said gear control step motor turns to said tested air-conditioning switch about one pre-set criteria position and this pre-set criteria position through a machinery draw-in groove some microspurs position; Measure to obtain a pressure drop data sequence, reject the voltage drop value that obtains this pre-set criteria position after irrational data.

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