CN101281099A - Test method for multiple types of acoustic devices - Google Patents

Abstract

The specific steps of a test method for multi-type acoustic devices are as follows: a variable test chamber is established; different covers are provided for different types of test samples; the cover carrying the test samples is connected to the variable test On the chamber body, the sample to be tested, the cover and the variable test chamber form a closed space; the sample to be tested is measured. The variable test cavity is provided with a hollow cavity part, several cavity rings connecting the cavity part and a piston which can be inserted into the cavity part and the cavity ring. The present invention can measure the performance parameters of various types of acoustic devices only by replacing different covers and changing the volume of the variable test cavity for different types of samples to be tested, that is, by selecting a cavity ring with a corresponding volume. Not only the production cost is reduced, but also the resource utilization rate is improved.

Description

Test method for multiple types of acoustic devices

【Technical field】

The invention relates to a testing method, in particular to a testing method for multi-type acoustic devices.

【Background technique】

The test method of the relevant acoustic device is to place the sample to be tested (acoustic device) in a test cavity, so as to test various performance indicators of the sample to be tested. The test cavity is a hollow semi-closed body, which has a fixed volume and is provided with a cavity opening for carrying the sample to be tested. When the sample to be tested is placed on the cavity opening, the sample to be tested and the entire test cavity form a confined space.

In order to test the performance of the sample to be tested, usually a type of sample requires several chambers to be tested with different volumes to meet the test requirements. The test cavity in the related art has a fixed volume, and the cavity opening can only test one type of sample. In this way, a large number of cavities are required for testing a type of sample, and this testing method will inevitably increase the production cost of the product. Moreover, when measuring different types of samples, because the structure of each type of sample is different, the previous test chamber cannot be reused, which seriously wastes production resources.

Therefore, it is necessary to provide a new testing method to overcome the above shortcomings.

【Content of invention】

The object of the present invention is to provide a test method for multi-type acoustic devices which reduces cost and effectively utilizes production resources.

The specific steps of the testing method of the multi-type acoustic device of the present invention are as follows: a variable testing cavity is established; different covers are provided for different types of samples to be tested; On the chamber body, the sample to be tested, the cover and the variable test chamber form a closed space; the sample to be tested is measured. The variable test cavity is provided with a hollow cavity part, several cavity rings connecting the cavity part and a piston which can be inserted into the cavity part and the cavity ring.

Compared with the prior art, the present invention has the following advantages: for different types of samples to be tested, it is only necessary to replace different covers and change the volume of the variable test cavity, that is, to select the cavity ring of the corresponding volume, and to measure a variety of The performance parameters of the acoustic device of the model. Not only the production cost is reduced, but also the resource utilization rate is improved.

【Description of drawings】

FIG. 1 is a perspective view of connecting a cover to a variable three-dimensional test chamber according to the present invention.

Fig. 2 is a sectional view along II-II when the cover shown in Fig. 1 is connected to the variable three-dimensional test chamber.

【Detailed ways】

The testing method of multi-type acoustic device of the present invention comprises the following steps (the acoustic device is also called the sample to be tested):

a. Establish a variable test chamber 1;

b. Provide different covers 2 for different types of samples to be tested (not shown);

c. Connect the cover 2 carrying the sample to be tested to the variable test chamber 1, so that the sample to be tested, the cover 2 and the variable test chamber 1 form a closed space (not marked);

d. Measure the sample to be tested.

The variable test cavity 1 is provided with a hollow cavity part 11 , several cavity rings 12 connecting the cavity part 11 and a piston 13 insertable in the cavity part 11 and the cavity ring 12 . Wherein, the cavity portion 11 is composed of a bottom wall 14 , a side wall 15 extending from the bottom wall 14 , and a cavity opening 16 extending from the upper edge of the side wall 15 . In order to ensure that the sample to be tested, the cover 2 and the variable test chamber 1 form a closed space, the total height of several chamber rings 13 must be smaller than the maximum height of the piston 13 moving in the chamber part 11 .

Each cover 2 is provided with a load-bearing part 21 combined and connected to the cavity opening 16 and a sample placement part 22 for placing the sample to be tested, wherein the load-bearing part 21 of each cover 2 has a shape that matches the cavity opening 16; Each placement portion 22 also has a shape matching that of the sample to be tested.

In order to obtain a better sealing effect, the cover 2 and the variable test chamber 1 can be sealed with plasticine or rubber, and lubricating oil can be applied between the piston 13 and the chamber part 11 .

The multi-type acoustic device testing method of the present invention only needs to replace different covers and change the volume of the variable test cavity for different types of samples to be tested, that is, to select the cavity ring of the corresponding volume, and then it can measure various types of acoustic devices. Performance parameters of acoustic devices. Not only the production cost is reduced, but also the resource utilization rate is improved.

The above descriptions are only preferred embodiments of the present invention, and the scope of protection of the present invention is not limited to the above embodiments, but all equivalent modifications or changes made by those of ordinary skill in the art according to the disclosure of the present invention should be included within the scope of protection described in the claims.

Claims (5)

1. A method for testing a multi-type acoustic device, characterized in that: the method may further comprise the steps: a. Build a variable test chamber; b. Provide different covers for different types of samples to be tested; c. Connect the cover carrying the sample to be tested to the variable test cavity, so that the sample to be tested, the cover and the variable test cavity form a closed space; d. Measure the sample to be tested. The variable test cavity is provided with a hollow cavity part, several cavity rings connecting the cavity part and a piston which can be inserted into the cavity part and the cavity ring. 2. The method for testing multiple types of acoustic devices according to claim 1, wherein the cavity portion is provided with a bottom wall, a side wall extending from the bottom wall, and a cavity extending from the upper edge of the side wall an opening; each cover is provided with a bearing part combined and connected to the opening of the cavity and a sample placement part for placing the sample to be tested. 3. The method for testing multiple types of acoustic devices as claimed in claim 2, wherein: the carrying portion of each cover has a profile matching the opening of the cavity; each placement portion also has a shape matching the sample to be tested. matching shape. 4. The method for testing multiple types of acoustic devices according to claim 3, characterized in that: the cavity ring is connected to the bottom wall of the cavity. 5. The method for testing multiple types of acoustic devices according to claim 4, characterized in that: the cover and the variable test cavity can be sealed with plasticine or rubber, and lubricating oil can be applied between the piston and the cavity.

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