TWI235822B - Test system - Google Patents

Abstract

A kind of test system is used to test the audio signal outputted from a microphone, when the audio signal is greater than a predefined value, then a display device is driven to radiate for indicating that the microphone is in normal condition.

Description

1235822

[Technical field to which the invention belongs] The present invention relates to a test system for a wind measurement device. '' ,, '' Especially about the function of a kind of microphone [previous technology]. In the product i: open; the microphone has a microphone device in the mode of operation is not stable, therefore, Lei =, 'two grams of wind related In the moving program of the circuit, it is necessary to eliminate the part fault m to enter the debugging program. At the time of debugging. The person is early-primarily to reduce the debugging analysis required. Figure 1 shows the conventional microphone _ System 1 2 Including: a processing device 丨 type 糸,. First. As shown in the figure, the test unit 122 has recording and playback functions *: 2.2 and -㈣24 · 'its towel' processing equipment: first two tt Ϊ1 22 Record the sound detected by the microphone device 10, and after processing, the sound played by the household device and the sound detected by the microphone device ii will be transmitted through Weibu Ba m = 1 door per day. At the same time, then It means that the microphone is installed i. Normal. Otherwise, it means that the ears: the phase 10 is abnormal. Xixiong suit ^ But ^ During the test, the surrounding environment has a considerable noise: making the test staff unable to correctly Listen clearly to the sound of the speaker 丨 2 4 'is it the same as the sound detected by the microphone 丨 〇 The same, which leads to misjudgment. In addition, the processing device 1 2 2 receives the sound detected by the microphone 10, and then processes the sound, and then drives the speaker; [2 4 plays the sound, and the processing device 1 2 2 needs a considerable length of processing. Time, therefore, reducing overall efficiency.

0809-A20308TW (Nl); PWHQ-CI-0103.TWXX; j〇ANNE > pld. Page 4 1235822 V. Description of the invention (2) The circuit design of the device 1 2 2 is complicated.卞 Hard and miscellaneous' requires more parts, and then increases to [invention content] There is a bell here, the present invention ± v is used to judge a microphone device: :: two, supply-kind test system, in order to achieve the above: between and improve The accuracy of judgment. -Microphone device, Zhizhong Maishen 3 Ming proposes a test system and system, which is suitable for-metric ton expansion unit 2 gram wind device to convert a sound signal into a flute-audio frequency. The test device of the present invention is a judging device for U Xiaxia, and a display device Di i, first, L includes a filtering device, a device for eliminating the first audio _ d = wave device, and a light-breaking microphone signal. Judging the installation, coupling the UW component so that it becomes the second audio preset value, then outputting a drive M _ # #! Is greater than — setting. When the display device receives the driving date, the installation ticket is protected. When fire ten j moves ^, it emits bright light. .1 = set up hanging. When the microphone does not emit light or is not solid, and the microphone emits shell light, it means that the microphone is abnormal. Q time, let the above and other objects, features, and advantages of the present invention ~ :, easy to understand 'the following is a preferred implementation, more detailed description is as follows: Formula, details [Embodiment] Figure 2 shows the present invention Microphone test system. As shown in the figure, the sound signal Ss is converted into the first audio signal by the test device 20, and the test system 22 includes: a filter device 222 and a conversion device type.

0809-A20308TlVF (Nl); PWHQ-CI-0103-TOX; JOANNE.ptd 5th 1235822

V. Description of the Invention (3) 224, a judging device 226, and a display device 228. The filtering device 22 2 'is coupled to the microphone device 20 to filter the DC component of the first audio signal SAn and make it a second audio signal'. The 'filtering means 22 2 may be a -capacitive element. The conversion device 224 converts the second audio " 5 Tiger SAC2 into a DC signal SDe. The judging device m receives the DC signal & and compares the DC signal ^ with a preset value. When the DC signal sDC is greater than the preset value, the drive signal SEN is output. Among them, the judging device 226 may be a comparison device, an amplitude judging device, or an OP amplifier. In addition, the 'transition I setting 224 may be omitted. When the converting means 224 is omitted, the judging means 22 6 receives the second audio signal SAC2 which is turned out by the filtering means 22 2. When the second audio signal SAC2 is greater than a preset value, a driving signal display device 22 8 is output, coupled to the judging device 22 6, and when the display device 226 receives the driving signal SEN, it emits bright light.

Figure 3a shows the waveform of the first audio signal. As shown in the figure, the first audio signal sAC1 output by the microphone device 20 has DC and AC components. Figures 3b and 3c show the output waveform of the filtering device. After the first audio signal is passed through the DC wave component 2 2 2 to remove the DC component, a second audio signal SAC2 as shown in FIGS. 3 b and 3 c can be obtained. Assuming that the conversion device 224 is omitted, the determination device 22 6 determines the state of the microphone device 20 based on the amplitude of the second audio signal SAC2. When the microphone device 20 is in a normal state, the first audio signal SAC1 output by the microphone device 20 is filtered by the filtering device 222 to obtain direct current.

1235822 V. Description of the invention (4) --- The second audio signal shown in Figure 3b. When the second audio signal is greater than the preset value vP (as shown by time Ti and T3), the judging device 226 outputs: No. SEN to light up the display device 2 28; t the second audio signal, less than ^ set value vP At time (, time D2, τ4), the judging device 22 6 does not output the drive, No. SEN, so that the display device 2 28 does not emit light. So when turning. When 224 is omitted, the display device 22 is sent every 8 hours. The microphone device 20 is in an abnormal state, and the microphone is installed. The second audio signal SAC1 is equal to 20, and the DC is filtered by the filter device 222. After that, the first audioized number § ^ 2 is shown in Figure 3C. Thanks, the second audio pass. The amplitude of the sAC2 is smaller than the preset value Vp. Therefore, the judgment device 2 26 does not have a moving signal SEN to the display device 2 28, which causes the display device 2 28 to not emit light. A normal state is issued at a fixed time. The tester can know whether the microphone device 20 displays the waveform of the DC signal according to the 3d and 3e diagrams according to whether the display device 2 2 8 is lit or not. It is assumed that when H is not saved, the conversion device 2 24 converts the 2nd frequency signal sA (: 2 output by the filtering device 222 into a DC signal, so that the determination device 226 determines the microphone device 2 based on the DC signal SDC. 〇. 乂 When the microphone device 20 is in the normal state, the first number sAC1 output by the filter device 22 2 and the conversion device 224 can obtain the DC signal SDC as shown in k. When the signed 99fi fi 山庄 / 田 和 々 口 旒 SDC is greater than the preset value Vp, it is judged to output the driving signal 226. Therefore, it can be seen from the d chart that the clothes 22δ continue to emit light.

1235822 V. Description of the invention (5) When the microphone device 20 is in an abnormal state, the standing sAC1 is rotated through the filter device 22 2 and converted 224. \ 曰 夕 古 、、 六 户 姑 "土" 如 笫 e 图 所+ The straight machine L 旎 SDC. As shown in Figure 3e. DC signal, less than, VP, therefore, the judgment device 2 26 cannot output the drive signal 'The second device 228 cannot emit light. A⑽, resulting in display equipment. Therefore, when the test system 22 has a conversion device 224, there are 4 persons. As long as it is judged whether or not the display device 228 emits light, the worker: Sets whether 20 is in a normal state. Microphone device Figure 4 shows a possible embodiment of the invention. The microphone includes: a condenser microphone (condenser mic) and a piezoelectric type piezo-electronic 20 (piezo-electronic mic). In this embodiment, a microphone is used as an example. Among them, the condenser microphone can be equivalent to a capacitor. The filtering device 222 is a capacitor c; the judging device 226 is a ratio of 11; and the display device 228 is an LED element. The following describes the operation method of the present invention. As shown in FIG. 4, the capacitive Max 210 is coupled to the power source Vcc through a resistance core, and converts the detected sound number k Ss into a first audio signal Saci. The capacitor c receives the first audio signal SAC1 divided by the resistors R2 and R3, and filters the DC component of the first audio signal SAC1 to make it the second audio signal Sac2. The positive input terminal of the comparison device Ui receives the second audio signal Sac2. The negative input terminal of the comparison device 1 receives a preset voltage Vp as the preset value Vp. In this embodiment, the preset voltage VP is a voltage obtained by dividing the resistance Rs and R6; among them, the resistance Rs is a Variable resistor 'is used to adjust the preset voltage. The comparison device h compares the second audio signal center with a preset voltage vp,

1235822 V. Description of the invention (6) When the second audio signal SAC2 is greater than the preset voltage vp, the driving signal sEN is output to light up the LED. When the second audio signal SAC2 is smaller than the preset voltage VP, the comparison device h does not output the driving signal sEN, so that the LED cannot emit bright light. Among them, the resistance ratio is used to strengthen the output signal of the condenser microphone 210, and the resistors R2 and R3 are used to avoid excessive voltage input to the comparison device 仏, which can be omitted. The resistor R4 is used to ensure that the input impedance of the comparison device h is infinite, and the resistors R7 and 8 are used to protect the LED. In addition, the judging device 226 is mainly used for judging the amplitude of the second audio signal SAC2. Therefore, the judging device 226 may be used instead. Or use a 10p amplifier instead of 'to amplify the second audio signal SAC2, and then judge the state of the microphone device based on whether the amplified second audio ## SAC2 can light up the display device. In the present invention, the state of the microphone is represented by a display device, so that the operator can easily know the state of the microphone according to the display state of the display device, thereby greatly improving work efficiency and accuracy. In addition, the number of parts required for the test system of the present invention is small, so the cost of the test system can also be saved: Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art, Without departing from the scope of = invention, some modifications and retouching can be made. Therefore, the scope of the invention = 1 is subject to the definition of the scope of the attached patent application. 4

1235822 Schematic illustration Figure 1 shows the test system for a conventional microphone. FIG. 2 shows a microphone test system of the present invention. Figure 3a shows the waveform of the first audio signal. Figures 3b and 3c show the waveform of the second audio signal. Figures 3d and 3e show the waveform of the DC signal. Figure 4 shows a possible embodiment of the invention. [Symbol description] 10, 20: microphone device; 12, 22: test system; 1 2 2: processing device; 124: speaker; 222: filter device; 224: conversion device; 2 2 6: judgment device; 22 8: display Device: 210: condenser microphone; C: capacitor; 1: comparison device; ratio ~ R8: resistance.

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Claims (1)

1235822 Upper · A styling system including a filter test system, suitable for a microphone device, in which a sound signal is converted into a first / audio signal. The above test tone sugar button is coupled to the above microphone. Device for filtering I ·, a judgment number greater than ~ ^ a display that the drive is normal. 2 · If the above display is installed with a microphone 3 · If the display shows the skirt i 4 · If the crossing wave device is described 5 · If the value of the device is judged, the forward frequency signal is greater than the signal. 6 · If the judgment device '5 is described as a DC component, it becomes a second audio ^ second description ^ ^ bluff; display, coupled to the above filtering device, when the above second set value, output a drive Signal; an audio signal device, coupled to the above-mentioned judging device, when the above signal is displayed, it emits a bright light, indicating that the above 7 devices are connected to the microphone, and the test system described in item 1 of the patent scope is requested, in which When no light is emitted within a fixed time, then, 'When abnormal. ~ The table above indicates that the test system described in item 1 of the patent scope is an LED element. / 、 Medium, upper The test system described in item 1 of the patent scope, 1 is a capacitive element. / 、 Please refer to the test system described in item 1 of the patent scope, wherein the upper = is a comparison device, and its negative input terminal is coupled to the preset terminal to transfer the second audio signal. When the second tone is the preset value,时 '， The above comparison device outputs the test system described in Item 5 of the above-mentioned driving patent, wherein the upper part further includes a voltage dividing circuit, and the preset value is the above-mentioned partial voltage. Η Page 11 1235822 6. Scope of patent application The voltage of voltage dividing point in the circuit. 7. The test system according to item 6 of the scope of patent application, wherein the voltage dividing circuit includes: a first resistor coupled between a first voltage level and a negative input terminal of the comparison device; A second resistor is connected between the negative input terminal of the comparison device and a second voltage level. 8. The test system according to item 7 of the scope of patent application, wherein the first or second resistor is a variable resistor for adjusting the preset value. 9. The test system according to item 1 of the scope of patent application, wherein the above-mentioned judging device is an amplitude judging device for detecting the amplitude of the second audio signal. 10. The test system according to item 1 of the scope of patent application, wherein the judging device is a 0P amplifier for amplifying the second audio signal; when the second audio signal is greater than the preset value, then The OP amplifier outputs the driving signal; when the second audio signal is smaller than the preset value, the OP amplifier cannot output the driving signal. 11. The test system according to item 1 of the scope of patent application, further comprising: a conversion device coupled between the filtering device and the judging device to convert the second audio signal into a DC signal. 1 2. The test system according to item 11 of the scope of patent application, wherein when the display device does not emit light, it indicates that the microphone device is abnormal. 0809-A20308TW (Nl); PWHQ-CI-0103-TWXX; JOANNE.ptd page 12