CN215956648U - Novel portable vehicle-mounted microphone testing tool - Google Patents
Novel portable vehicle-mounted microphone testing tool Download PDFInfo
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- CN215956648U CN215956648U CN202122260618.XU CN202122260618U CN215956648U CN 215956648 U CN215956648 U CN 215956648U CN 202122260618 U CN202122260618 U CN 202122260618U CN 215956648 U CN215956648 U CN 215956648U
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Abstract
The utility model discloses a novel portable vehicle-mounted microphone testing tool which comprises a shell, wherein a connector, an indicator lamp, a testing button and a display are arranged on a front panel of the shell, a power supply access port and a switch are arranged at the rear end of the shell, a control mechanism is arranged on the inner wall of the shell, the power supply access port is connected with the power supply input end of the control mechanism after being connected with the switch in series, the connector is connected with the testing end of the control mechanism through a wiring harness, the output end of the testing button is connected with the input end of the control mechanism, and the output end of the control mechanism is respectively connected with the indicator lamp and the input end of the display. The utility model is portable, can rapidly analyze and position the function problem of the voice system in the face of complex driving use environment, can test microphones with various specifications, selects 5V, 8V and two-wire and three-wire microphones, has strong applicability, and can rapidly judge the fault phenomenon and fault reason of the microphone and analyze and position the problem of the voice control system.
Description
Technical Field
The utility model relates to the technical field of vehicle-mounted microphones, in particular to a novel portable vehicle-mounted microphone testing tool.
Background
With the rapid development of the automobile industry, more and more intelligent scientific and technological functions are applied to driving vehicles. The human-computer interaction of the traditional automobile mostly takes a central control screen as a core, the interface design is old, the safety of the interaction mode of the button and the touch screen is relatively low, and the intelligent driving requirement is difficult to meet. The voice is one of the most natural interactive forms, has the advantages of high input efficiency, low threshold, convenience in liberation of two hands and capability of effectively carrying out emotion communication, and the intelligent voice interaction is a new generation of interaction mode based on voice input, and a feedback result can be obtained by speaking.
Microphone technology has also been developed at a rapid pace, based on microphones as the front-end signal input device for speech systems. The early microphone testing tool tests a single microphone, and due to the rapid development of a voice control system, the single testing tool is inconvenient to use due to the occurrence of microphones with various specification parameters. And the volume ratio of traditional microphone test fixture is bigger, and is not portable, can only test indoor to the analytic test of microphone, can't face complicated driving environment.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a novel portable vehicle-mounted microphone testing tool, which can test microphones with various specification parameters, check the working current of the microphone and analyze and position a voice control system.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows.
The utility model provides a novel portable on-vehicle microphone test fixture, which comprises a housin, be provided with the connector that is used for connecting test microphone on the front end panel of casing, an pilot lamp for instructing operating condition, a display that is used for the test button of drive test and is used for showing the test result, the rear end of casing is provided with the switch that is used for inserting the power access mouth of power and is used for opening and close test fixture, the inner wall of casing is provided with the control mechanism that is used for carrying out the test to the microphone that inserts, power access mouth and switch series connection back connection control mechanism's power input end, the connector passes through the pencil and connects the test end at control mechanism, test button's output connection control mechanism's input, the input of pilot lamp and display is connected respectively to control mechanism's output.
The novel portable vehicle-mounted microphone testing tool comprises a power supply front-end processing circuit, a voltage conversion module, a two-wire/three-wire microphone selecting and current displaying circuit, a signal processing circuit and a microphone power amplifying circuit, wherein the power supply front-end processing circuit is used for carrying out anti-surge and filtering processing on an input direct-current power supply, the voltage conversion module is used for converting input voltage, the two-wire/three-wire microphone selecting and current displaying circuit is used for selecting a two-wire or three-wire working mode of a microphone, the signal processing circuit is used for processing audio signals, the microphone power amplifying circuit is used for testing the working state of the microphone, the input end of the power supply front-end processing circuit is connected with a power supply access port (6), the output end of the power supply front-end processing circuit is connected with the input end of the voltage conversion module, the output end of the voltage conversion module is connected with the input end of the two-wire/three-wire microphone selecting and current displaying circuit, and the output end of the two-wire/three-wire microphone selecting and current displaying circuit is connected with the output end of the signal processing circuit, the output end of the signal processing circuit is connected with the output end of the microphone power amplification circuit.
The novel portable vehicle-mounted microphone testing tool comprises a DC12V-8V voltage conversion circuit, a DC8V-5V voltage conversion circuit, a DC5V-3.3V voltage conversion circuit and a power selection circuit, wherein the DC12V-8V voltage conversion circuit is used for converting 12V voltage into 8V voltage, the DC8V-5V voltage conversion circuit is used for converting 8V voltage into 5V voltage, the DC5V-3.3V voltage conversion circuit is used for converting 5V voltage into 3.3V voltage, the power selection circuit is used for selecting a power supply of a microphone, the input end of the DC12V-8V voltage conversion circuit is connected with the output end of a front-end processing circuit of a power supply, the output end of the DC12V-8V voltage conversion circuit is connected with the input end of the DC8V-5V voltage conversion circuit, the output end of the DC8V-5V voltage conversion circuit is connected with the input end of the DC5V-3.3V voltage conversion circuit, and the input end of the power selection circuit is respectively connected with the DC12V-8V voltage conversion circuit, The output end of the DC8V-5V voltage conversion circuit and the output end of the DC5V-3.3V voltage conversion circuit, and the output end of the power supply selection circuit is connected with the input end of the two-wire/three-wire microphone selection and current display circuit.
Due to the adoption of the technical scheme, the technical progress of the utility model is as follows.
The utility model is portable, can rapidly analyze and position the function problem of the voice system in the face of complex driving use environment, can test microphones with various specifications, selects 5V, 8V and two-wire and three-wire microphones, has strong applicability, and can rapidly judge the fault phenomenon and fault reason of the microphone and analyze and position the problem of the voice control system.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the back structure of the present invention;
FIG. 3 is a block diagram of the control mechanism according to the present invention;
FIG. 4 is a circuit diagram of a power front-end processing circuit according to the present invention;
FIG. 5 is a circuit diagram of a DC12V-8V voltage conversion circuit according to the present invention;
FIG. 6 is a circuit diagram of a DC8V-5V voltage conversion circuit according to the present invention;
FIG. 7 is a circuit diagram of a DC5V-3.3V voltage conversion circuit according to the present invention;
FIG. 8 is a circuit diagram of a two/three wire microphone selection and current display circuit according to the present invention;
fig. 9 is a circuit diagram of a microphone power amplifier circuit according to the present invention.
Wherein: 1. the device comprises a shell, a plug connector 2, an indicator light 3, a test button 4, a display 5, a power supply access port 6 and a switch 7.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a novel portable on-vehicle microphone test fixture, its structure is shown in fig. 1-2, including casing 1, be provided with connector 2, pilot lamp 3, test button 4 and display 5 on the front panel of casing 1, connector 2 passes through the pencil and connects on the front panel, is used for connecting the microphone, tests the microphone, pilot lamp 3 is used for instructing test fixture's operating condition, test button 4 is used for starting the test, display 5 is used for showing the test result.
The rear end of casing 1 is provided with power access mouth 6 and switch 7, and power access mouth 6 is used for inserting the power, and switch 7 is used for opening and closing test fixture.
The inside of casing 1 is provided with control mechanism for the microphone that butt joint plug-in components inserted tests, connects at control mechanism's power input end after power access mouth 6 establishes ties with switch 7, and connector 2 passes through the pencil and connects at control mechanism's test end, and test button 4's output connection control mechanism's input, control mechanism's output connects the input of pilot lamp 3 and display 5 respectively.
The structural block diagram of the control mechanism is shown in fig. 3, and the control mechanism comprises a power supply front-end processing circuit, a voltage conversion module, a two-wire/three-wire microphone selecting and current displaying circuit, a signal processing circuit and a microphone power amplifying circuit, wherein the input end of the power supply front-end processing circuit is connected with a power supply access port 6, the output end of the power supply front-end processing circuit is connected with the input end of the voltage conversion module, the output end of the voltage conversion module is connected with the input end of the two-wire/three-wire microphone selecting and current displaying circuit, the output end of the two-wire/three-wire microphone selecting and current displaying circuit is connected with the output end of the signal processing circuit, and the output end of the signal processing circuit is connected with the output end of the microphone power amplifying circuit.
The power supply front-end processing circuit is responsible for processing interference from a power supply line, performing surge and filtering processing on a power supply, and performing overcurrent protection on current, and a circuit diagram of the power supply front-end processing circuit is shown in fig. 4, and performing overvoltage protection, overcurrent protection and filtering processing on the power supply.
The voltage conversion module is used for converting input voltage and comprises a DC12V-8V voltage conversion circuit, a DC8V-5V voltage conversion circuit, the power supply comprises a DC5V-3.3V voltage conversion circuit and a power supply selection circuit, wherein the input end of the DC12V-8V voltage conversion circuit is connected with the output end of a power supply front-end processing circuit, the output end of the DC12V-8V voltage conversion circuit is connected with the input end of a DC8V-5V voltage conversion circuit, the output end of the DC8V-5V voltage conversion circuit is connected with the input end of a DC5V-3.3V voltage conversion circuit, the input end of the power supply selection circuit is respectively connected with the output ends of the DC12V-8V voltage conversion circuit, the DC8V-5V voltage conversion circuit and the DC5V-3.3V voltage conversion circuit, and the output end of the power supply selection circuit is connected with the input ends of a two-wire/three-wire microphone selection and current display circuit.
The DC12V-8V voltage conversion circuit is used for converting 12V voltage into 8V voltage, and the circuit diagram is shown in FIG. 5, and a KIA7808 chip is used for converting the voltage from 12V to 8V.
The DC8V-5V voltage conversion circuit is used for converting 8V voltage into 5V voltage, and the circuit diagram is shown in FIG. 6, and the AZ1117H-5.0 chip is used for converting the voltage from 8V to 5V.
The DC5V-3.3V voltage conversion circuit is used for converting 5V voltage into 3.3V voltage, and the circuit diagram is shown in FIG. 7, and the LM1117-3.3V chip is used for converting the voltage from 5V into 3.3V.
The two-wire/three-wire microphone selection and current display circuit is used for selecting a two-wire or three-wire working mode of the microphone, so that the microphone can be normally electrified, the working current of the microphone is displayed through the display to judge the state of the microphone, the output end of the two-wire/three-wire microphone selection and current display circuit is connected with the input end of the display, the circuit diagram of the two-wire/three-wire microphone selection and current display circuit is shown in fig. 8, the testing of microphones of various specifications is realized, and the working current of the microphone is displayed.
The signal processing circuit is used for processing the audio signal of the microphone to obtain a stable and clean audio signal.
The microphone power amplifier circuit is used for testing the working state of the microphone, the circuit diagram of the microphone power amplifier circuit is shown in fig. 9, and the microphone power amplifier circuit plays audio signals received by the microphone, so that the problems of a voice control system are conveniently analyzed and positioned.
When the microphone is tested, the testing work is connected to the power supply, the microphone is inserted into the connector after the switch is turned on, the microphone is tested by pressing the testing button, and the testing result is displayed on the display after the testing is finished, so that a tester can obtain the testing result intuitively.
Claims (3)
1. The utility model provides a novel portable on-vehicle microphone test fixture which characterized in that: the testing device comprises a shell (1), a socket connector (2) used for connecting a testing microphone is arranged on a front end panel of the shell (1), an indicating lamp (3) used for indicating working state, a testing button (4) used for driving testing and a display (5) used for displaying testing results, the rear end of the shell (1) is provided with a power access port (6) used for accessing a power supply and a switch (7) used for opening and closing a testing tool, the inner wall of the shell (1) is provided with a control mechanism used for testing the microphone accessed by the socket connector, the power access port is connected with the power input end of the control mechanism after being connected with the switch in series, the socket connector (2) is connected with the testing end of the control mechanism through a wiring harness, the output end of the testing button is connected with the input end of the control mechanism, and the output end of the control mechanism is connected with the indicating lamp and the input end of the display respectively.
2. The novel portable vehicle microphone testing tool according to claim 1, characterized in that: the control mechanism comprises a power supply front-end processing circuit for performing anti-surge and filtering processing on an input direct-current power supply, a voltage conversion module for converting input voltage, a two-wire/three-wire microphone selection and current display circuit for selecting a two-wire or three-wire working mode of a microphone, a signal processing circuit for processing audio signals and a microphone power amplifier circuit for testing the working state of the microphone, the input end of the power supply front-end processing circuit is connected with the power supply access port (6), the output end of the power supply front-end processing circuit is connected with the input end of the voltage conversion module, the output end of the voltage conversion module is connected with the input end of the two-wire/three-wire microphone selection and current display circuit, the output end of the two-wire/three-wire microphone selection and current display circuit is connected with the output end of the signal processing circuit, and the output end of the signal processing circuit is connected with the output end of the microphone power amplification circuit.
3. The novel portable vehicle microphone testing tool according to claim 2, characterized in that: the voltage conversion module comprises a DC12V-8V voltage conversion circuit for converting a 12V voltage into an 8V voltage, a DC8V-5V voltage conversion circuit for converting the 8V voltage into a 5V voltage, a DC5V-3.3V voltage conversion circuit for converting the 5V voltage into a 3.3V voltage and a power supply selection circuit for selecting a power supply of the microphone, wherein the input end of the DC12V-8V voltage conversion circuit is connected with the output end of a power supply front-end processing circuit, the output end of the DC12V-8V voltage conversion circuit is connected with the input end of the DC8V-5V voltage conversion circuit, the output end of the DC8V-5V voltage conversion circuit is connected with the input end of the DC5V-3.3V voltage conversion circuit, and the input end of the power supply selection circuit is respectively connected with the output ends of the DC12V-8V voltage conversion circuit, the DC8V-5V voltage conversion circuit and the DC5V-3.3V voltage conversion circuit, the output end of the power supply selection circuit is connected with the input end of the two-wire/three-wire microphone selection and current display circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122260618.XU CN215956648U (en) | 2021-09-17 | 2021-09-17 | Novel portable vehicle-mounted microphone testing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122260618.XU CN215956648U (en) | 2021-09-17 | 2021-09-17 | Novel portable vehicle-mounted microphone testing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215956648U true CN215956648U (en) | 2022-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122260618.XU Active CN215956648U (en) | 2021-09-17 | 2021-09-17 | Novel portable vehicle-mounted microphone testing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215956648U (en) |
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2021
- 2021-09-17 CN CN202122260618.XU patent/CN215956648U/en active Active
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