CN101793625A - 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 to carry out on an integrated test board 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 by 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 gauge tap 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 at a kind of specific switch product.In test, be to select to test which kind of product by selector switch actually.Though these switch function differences, 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 through regular meeting the situation that the tester has taken product by mistake appears; this moment is because the connector difference; after pressing the test starting button; stepper motor at first can vertical drop, and the speed of whereabouts is very fast, and strength is bigger.When the switch of test and draw-in groove when not matching, because the draw-in groove difference, switch tends to be stuck in draw-in groove, needs the at first big strength of the expense utmost point 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;

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

Before the vertical drop of described gear control step motor, whether detection is identical with the contact drop of default initial switch gear correspondence by the contact drop of slowdown monitoring switch, if identically then allow gear control step motor to fall to block described by slowdown monitoring switch, otherwise described gear control step motor does not allow to fall;

Near described gear control step motor turns to described tested air-conditioning switch about one pre-set criteria position and this pre-set criteria position by 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 by added error correction in existing method of testing, 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, comprises step: the tested air-conditioning switch of packing on the integrated test board of voltage drop meter, torque meter and gear control step motor; Described gear control step motor shaft rotates to a predetermined angle machinery draw-in groove is installed; Before the vertical drop of described gear control step motor, whether detection is identical with the contact drop of default initial switch gear correspondence by the contact drop of slowdown monitoring switch, if identically then allow gear control step motor to fall to block described by slowdown monitoring switch, otherwise described gear control step motor does not allow to fall; Near described gear control step motor turns to described tested air-conditioning switch about one pre-set criteria position and this pre-set criteria position by 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 by 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 gauge tap is located.One grade of revolution is just checked once the function of this gear and the pressure drop at switch contacts place, 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; select to test which kind of product by selector switch 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 through regular meeting the situation that the tester has taken product by mistake appears; this moment is because the connector difference, press start button after, stepper motor at first can vertical drop; the speed that falls is very fast, and strength is bigger.Because the draw-in groove difference, product tends to be stuck,, need the at first big strength of the expense utmost point just can take out.Test instrumentation in the past is for addressing this problem, often operating personnel are strengthened management, require operating personnel must guarantee all that each time product do not take by mistake, simultaneously under the prerequisite of not taking by mistake, also must use hand inspection one time, initial gear when guaranteeing each product detection is in leftmost position, even otherwise product is not taken 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 these products earlier is identical with the selected switch of selector switch, 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 by the stepper motor coupled switch and locatees, the degree of accuracy of stepper motor is quite high, the position of Zhuan Donging is all fixed each time, but switch is because technological problems, all there is discreteness, certain mechanical deflection is arranged, so just have measuring error.So the way by software is eliminated error, be that stepper motor is when turning to a certain gear, near the pressure drops of surveying several points about this gear more, be used for and standard control, if the machinery of product gear angle has bigger deviation, then the data of Jian Ceing must have the data of several points obviously to exceed standard, and then these data can not be selected.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 by 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 the product heap that also bad product can be put into.So test instrumentation has increased a reset key, after test is finished, if not only acousto-optic hint of faulty item arranged, and the way by software, it is invalid that the startup button is pressed, product can't continue test, pins product by control physical construction simultaneously, and 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 to change different mechanical heads, because the problem of structure, the machinery head must conform to the initial position of product at the beginning, and this moment, mechanical screw eye position must be back to replacing person in initial position, can't tighten, when the stepper motor rotating shaft is rotated, the machinery head can't rotate synchronously, stepper motor is high-precision, must guarantee synchronously with the hands by hand also that therefore 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;

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

Before the vertical drop of described gear control step motor, whether detection is identical with the contact drop of default initial switch gear correspondence by the contact drop of slowdown monitoring switch, if identically then allow gear control step motor to fall to block described by slowdown monitoring switch, otherwise described gear control step motor does not allow to fall;

Near described gear control step motor turns to described tested air-conditioning switch about one pre-set criteria position and this pre-set criteria position by 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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