CN216391418U - Acoustic test terminal - Google Patents
Acoustic test terminal Download PDFInfo
- Publication number
- CN216391418U CN216391418U CN202120916614.XU CN202120916614U CN216391418U CN 216391418 U CN216391418 U CN 216391418U CN 202120916614 U CN202120916614 U CN 202120916614U CN 216391418 U CN216391418 U CN 216391418U
- Authority
- CN
- China
- Prior art keywords
- module
- audio
- test
- test terminal
- earphone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Telephone Function (AREA)
Abstract
The application discloses an acoustic test terminal which comprises a shell, a touch display screen, a power supply module, a wireless communication module, an audio generation module, an audio output module, an earphone and a control module; the power supply module, the wireless communication module, the audio generation module, the audio output module and the control module are all fixedly arranged in the shell; the power supply module is used for providing working electric energy for the test terminal; the wireless communication module is used for establishing communication connection with the test host, receiving a test instruction and uploading response information input by a tested person; the audio generation module is used for generating audio data codes according to the test instructions; the audio output module generates a corresponding audio signal according to the audio data coding; the earphone is electrically connected with the audio output module and is used for playing audio signals; the touch display screen is used for the tested person to select and/or input response information on the touch display screen according to the audio signal. The application has the advantages of small volume, convenient carrying, high testing efficiency and high testing accuracy.
Description
Technical Field
The application relates to the technical field of acoustic testing, in particular to an acoustic testing terminal.
Background
In real life, workers who work specially and work in special work types often have special requirements in terms of hearing. The existing acoustic test generally adopts a PC (personal computer) to carry out the acoustic test, and each tested person needs to be equipped with a computer, so that the cost is higher. The PC is large in size and cannot be conveniently carried and placed, so that the practicability and the applicability of the PC are reduced; meanwhile, the testing efficiency is not high, the main pipe of the test has large influence factors, and the error of the test result is large.
Disclosure of Invention
In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide an acoustic testing terminal which is small in size, convenient to carry, high in testing efficiency and high in testing accuracy.
The acoustic test terminal comprises a shell, a touch display screen, a power supply module, a wireless communication module, an audio generation module, an audio output module, an earphone and a control module;
the power supply module, the wireless communication module, the audio generation module, the audio output module and the control module are all fixedly arranged in the shell;
the control module is electrically connected with the touch display screen, the power supply module, the wireless communication module, the audio generation module and the audio output module for control;
the power supply module is used for providing working electric energy for the test terminal;
the wireless communication module is used for establishing communication connection with the test host, receiving a test instruction and uploading response information input by a tested person;
the audio generation module is used for generating audio data codes according to the test instruction and transmitting the generated audio data codes to the audio output module;
the audio output module is used for receiving the audio data codes, generating corresponding audio signals according to the audio data codes and transmitting the audio signals to the earphones;
the earphone is electrically connected with the audio output module and is used for playing audio signals;
the touch display screen is fixedly arranged on the top surface of the shell and used for displaying test questions and response keys corresponding to the audio signals, so that a tested person can select and/or input response information on the touch display screen according to the audio signals.
Preferably, the power supply module is a battery power supply module/a variable voltage power supply module; and one side of the shell is provided with a power interface which is used for connecting an alternating current power supply and charging and/or supplying power for the power module.
Preferably, the earphone is detachably connected with the audio output module through an earphone jack; the earphone jack is fixedly arranged on the front side of the shell.
Preferably, the top surface of the shell is fixedly provided with a startup and shutdown key and a work indicator light; the working indicator light is used for displaying the working state of the test terminal.
Preferably, an antenna interface is fixedly arranged on the rear side of the shell and is electrically connected with the wireless communication module; the antenna interface is detachably provided with an external antenna.
Preferably, the acoustic test terminal further comprises a storage module fixedly arranged in the shell and electrically connected with the control module; the storage module is used for storing the test scheme, the audio file and the like, so that the audio output module can select the corresponding test scheme and the audio file according to the test instruction and play the test scheme and the audio file through the earphone, and a tested person can perform physiological acoustic test.
Preferably, the touch display screen, the wireless communication module, the audio generation module, the audio output module, the earphone, the storage module and the control module are electrically isolated, so as to block signal crosstalk paths among the modules.
Preferably, the control module is an MCU.
Preferably, the earphone is an air conduction earphone of model TDH 39P.
Preferably, the wireless communication module is a WIFI communication module.
Compared with the prior art, the beneficial effects of this application are:
one test host of the acoustic test terminal can correspond to a plurality of test terminals, and a plurality of persons can be tested at the same time, so that the cost is reduced, and the test efficiency is improved; each module of the test terminal is arranged in the shell, so that the volume of the test terminal is reduced, the test terminal is convenient to carry and place, and the applicability of the test terminal is improved; the test terminal is in wireless connection with the test host, so that the flexibility of the placement position of the test terminal is improved, and the fairness of the test is improved; the test result is automatically generated by the test host, so that the test accuracy is improved; by providing an audio generation module. And the storage module reduces the data transmission quantity between the test terminal and the test host and improves the test efficiency.
It should be understood that what is described in this summary section is not intended to limit key or critical features of the embodiments of the application, nor is it intended to limit the scope of the application. Other features of the present application will become apparent from the following description.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic system connection diagram of an acoustic test terminal according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of an acoustic test terminal according to an embodiment of the present disclosure;
fig. 3 is a schematic view of a connection relationship between the external antenna and the housing in fig. 1;
reference numbers in the figures: the system comprises a shell 1, a touch display screen 2, a power supply module 3, a wireless communication module 4, an audio generation module 5, an audio output module 6, an earphone 7, a storage module 8 and a control module 9;
11 on-off keys and 12 working indicator lamps;
31 a power interface;
41 antenna interface, 42 external antenna;
61 earphone jack;
121 power-on indicator lamps, 122 earphone connection indicator lamps and 123 wireless connection indicator lamps.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for the convenience of description, only the portions relevant to the application are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 3, an embodiment of the present application provides an acoustic testing terminal, including a housing 1, a touch display screen 2, a power module 3, a wireless communication module 4, an audio generation module 5, an audio output module 6, an earphone 7, and a control module 9;
the power module 3, the wireless communication module 4, the audio generation module 5, the audio output module 6 and the control module 9 are all fixedly arranged in the shell 1;
the control module 9 is electrically connected with the touch display screen 2, the power supply module 3, the wireless communication module 4, the audio generation module 5 and the audio output module 6 for control;
the power supply module 3 is used for providing working electric energy for the test terminal;
the wireless communication module 4 is used for establishing communication connection with the test host, receiving a test instruction and uploading response information input by a tested person;
the audio generating module 5 is used for generating an audio data code according to the test instruction and transmitting the generated audio data code to the audio output module 6;
the audio output module 6 is used for encoding audio data, generating a corresponding audio signal according to the audio data encoding, and transmitting the audio signal to the earphone 7;
the earphone 7 is electrically connected with the audio output module 6 and is used for playing audio signals;
the touch display screen 2 is fixedly arranged on the top surface of the shell 1 and used for displaying test questions corresponding to the audio signals and answering keys, so that a tested person can select and/or input answering information on the touch display screen according to the audio signals.
In this embodiment, the acoustic tests are divided into a physiological acoustic test and a psychoacoustic test. When a tested person carries out a physiological acoustic test, the wireless communication module 4 is in communication connection with the test host and receives a test instruction sent by the test host, the control module 9 transmits the control instruction to the audio generation module 5, the audio generation module 5 randomly generates an audio data code according to the test instruction and transmits the audio data code to the audio output module 6, and the audio output module 6 generates an audio signal according to the audio data code and plays the audio signal through the earphone 7 for the tested person to listen to; the touch display screen 2 is used for displaying test questions and response keys corresponding to the audio signals, a tested person inputs response information on the touch display screen 2 according to the listened audio signals, the control module 9 controls the wireless communication module 4 to transmit the response information and the randomly generated audio data codes to the test host, the test host evaluates the response information and the audio data codes, analyzes test data of the tested person and generates a test report.
The audio data codes generated randomly by the audio generating module 5 comprise different pitches, tone intensities, tone lengths, tone colors and rhythms, and the audio output module 6 generates audio information comprising corresponding pitches, tone intensities, tone lengths, tone colors and rhythms according to the audio data codes and can perform various physiological acoustic tests on tested personnel. The test comprehensiveness is improved.
The touch display screen 2 displays an A/B/C/D response key or a V/x response key and a determination key, when a tested person does not touch the response key, the response key has no special change, when a certain response key is touched, the touch display screen 2 can mark the response key by framing, deepening and the like to prompt the response key selected by the tested person, and after the tested person confirms that the selection is correct, the determination key is touched, at the moment, the control module 9 controls the wireless communication module 4 to transmit response information input by the tested person and corresponding audio data codes to the test host computer for test evaluation to generate a test report, thereby effectively preventing inaccurate test caused by the mistaken touch of the tested person and improving the test accuracy.
When being tested personnel and carrying out the psychoacoustics test, the test host transmits test scheme and audio file to test terminal through wireless communication module 4, control module 9 control audio output module 6 plays test scheme and audio file through the earphone, supply to be listened to by the test personnel, the test personnel responds through touch display screen 2 according to the audio information of listening to, control module 9 transmits response information to the test host through wireless communication module 4, the test live in carries out the test aassessment according to response information, test scheme and audio file, form the test report.
The power module 3, the wireless communication module 4, the audio generation module 5, the audio output module 6 and the control module 9 are all fixedly arranged inside the shell 1, so that the test terminal is convenient to carry and transport, and the problems that the conventional test terminal is large in size and inconvenient to transport are solved; meanwhile, the wireless communication module 4 is in communication connection with the test host, so that the same test host can be simultaneously connected with a plurality of test terminals, and the test efficiency of the test terminals is improved.
In a preferred embodiment, the power module 3 is a battery power module/transformer power module; one side of the housing 1 is provided with a power interface 31 for connecting an alternating current power supply to charge and/or supply the power module 3. Referring to fig. 1-2, in this embodiment, the power module 3 may be a battery power module, or may be a voltage transformation (ac to dc) power module, and when the battery power module is powered, the power interface 31 is used to charge the battery, which is convenient for placing the test terminal; when the power supply module is used for supplying power to a voltage transformation (ac to dc), the power interface 31 is used for connecting an alternating current power supply and supplying working electric energy to the test terminal, so that the continuous work of the test terminal can be ensured, and the test failure caused by insufficient electric quantity can be prevented; the power module 3 can also use a battery power supply module and a voltage transformation (ac to dc) power supply module at the same time, when the power interface 31 is not communicated with an alternating current power supply, the battery power supply module supplies power, when the power interface 31 is communicated with the alternating current power supply, the alternating current power supply supplies power to the test terminal, and the battery power supply module is charged at the same time, so that the flexibility of placing the test terminal is improved, and the situation that the test cannot be performed due to insufficient electric quantity can be effectively prevented; power module 3 can also be provided with power monitoring function, and control module 9 shows power module 3's electric quantity information on touch display screen 2 in real time, makes things convenient for by the tester to observe test terminal's electric quantity.
In a preferred embodiment, the headphones 7 are detachably connected with the audio output module 6 through a headphone jack 61; the earphone jack 61 is fixedly provided on the front side of the housing 1. Referring to fig. 1 to 2, in this embodiment, the earphone 7 and the audio output module 6 are detachably connected through an earphone jack 61, so that the earphone 7 can be conveniently replaced, and when the test terminal is carried, the earphone 7 and the box body 1 can be separately placed, thereby preventing the earphone cable from being wound around the box body 1, and causing difficulty in carrying and placing.
In a preferred embodiment, the top surface of the casing 1 is fixedly provided with a power on/off key 11 and a work indicator light 12; the working indicator lamp 12 is used for displaying the working state of the test terminal. Referring to fig. 1 to 2, in this embodiment, the power on/off key 11 may be a point-press key or a long-press key, and is preferably a long-press key, that is, the power on/off key 11 is pressed long to perform power on/off operation of the test terminal, so as to prevent the test terminal from being turned on and wasting electric energy due to mistaken touch of the power on/off key during transportation and placement of the test terminal, and prevent the test terminal from being turned off and ineffective due to mistaken touch of the power on/off key 11 by a tested person during a test.
The working indicator lamp 12 can display the working state of the test terminal, please refer to fig. 1-2, in this embodiment, the working indicator lamp 12 includes three, which are a power-on indicator lamp 121, an earphone connection indicator lamp 122, and a wireless connection indicator lamp 123, after the test terminal is powered on, the power-on indicator lamp 121 is turned on to prompt that the test terminal is powered on, the power-on indicator lamp 121 has two colors, such as green and red, the test terminal works normally, when each module works normally, the green light is turned on, and when the power of the power module 3 is insufficient or a certain module does not supply power normally, the red light is turned on; the earphone connection indicator lamp 122 is used for displaying whether the test terminal is normally connected with the earphone or not, the earphone connection indicator lamp 122 is also provided with two colors, such as red and green, the earphone 7 is not inserted into the earphone jack 61 or is inserted into the earphone jack 61, when the earphone 7 does not work, the red light is on, the earphone 7 is inserted into the earphone jack 61, and when the earphone 7 normally works, the green light is on; the wireless connection pilot lamp 123 shows the communication connection state of wireless communication module 4 and test host computer, and when not connecting, the wireless connection pilot lamp does not light, and after the normal connection, the wireless connection pilot lamp 123 lights, and when wireless communication module 4 carried out data interaction with the test host computer, the wireless connection pilot lamp 123 twinkles.
In a preferred embodiment, an antenna interface 41 is fixedly arranged on the rear side of the housing 1 and electrically connected with the wireless communication module 4; the antenna interface 41 is detachably mounted with an external antenna 42. Referring to fig. 1 to fig. 3, in this embodiment, the external antenna 42 is disposed to enhance the communication signal strength of the wireless communication module 4, so as to improve the communication connection stability between the wireless communication module and the test host; the external antenna 42 can be arranged to be adjustable in angle, so that the direction can be conveniently adjusted, and the communication connection stability between the wireless communication module 4 and the test host is further improved; external antenna 42 is detachable and is connected with antenna interface 41, conveniently changes external antenna 42, simultaneously, when carrying test terminal, can pull down external antenna 42, separately carries, causes the damage to external antenna 42 in the mode handling.
In a preferred embodiment, the acoustic test terminal further includes a storage module 8 fixedly disposed inside the casing 1 and electrically connected to the control module 9; the storage module 8 is used for storing the test scheme, the audio file and the like, so that the audio output module 6 selects the corresponding test scheme and the corresponding audio file according to the test instruction and plays the test scheme and the audio file through the earphone 7, and the tested person can perform the physiological acoustic test. Referring to fig. 1, in this embodiment, the storage module 8 is configured to store data such as a test scheme and an audio file used in performing a psychoacoustic test, when performing the psychoacoustic test, transmission of the test scheme and the audio file between the wireless communication module 4 and the test host is not required, and only the test host transmits a data code of the corresponding test scheme and the audio file to the test terminal, the control module 9 may control the audio output module 6 to play the corresponding test scheme and the audio file pre-stored in the storage module 8 according to the data code, and a tested person listens to the test scheme and the audio file through the earphone 7 and responds on the touch display screen 2, thereby completing the psychoacoustic test and improving the test efficiency.
In a preferred embodiment, the touch display screen 2, the wireless communication module 4, the audio generation module 5, the audio output module 6, the earphone 7, the storage module 8 and the control module 9 are electrically isolated from each other, so as to block signal crosstalk paths between the modules. External power supply, wire transconductance and signal crosstalk among the modules all cause interference to the audio generation module 5, the audio output module 6 and the earphone 7, so that the audio signal played by the earphone 7 has noise. Therefore, in this embodiment, the touch display screen 2, the wireless communication module 4, the audio generation module 5, the audio output module 6, the earphone 7, the storage module 8 and the control module 9 are isolated from each other by supplying power, so as to block signal crosstalk paths between the modules; an EMI suppression and impulse noise filter circuit can be further arranged in the audio generation module 5 and the audio output module 6, so that the influence of high-frequency noise in the circuit on the audio signal played by the earphone 7 is further reduced.
In a preferred embodiment, the control module 9 is a MCU. A Micro Control Unit (MCU), also called a Single Chip Microcomputer (Single Chip Microcomputer) or a Single Chip Microcomputer (MCU), is a Chip-level computer formed by appropriately reducing the frequency and specification of a Central Processing Unit (CPU) and integrating peripheral interfaces such as a memory, a counter (Timer), a USB, an a/D converter, a UART, a PLC, a DMA, etc., and even an LCD driving circuit on a Single Chip, and performing different combination control for different applications. Such as mobile phones, PC peripherals, remote controls, to automotive electronics, industrial stepper motors, robotic arm controls, etc., see the silhouette of the MCU. In the embodiment, the size of the test terminal is effectively reduced by using the MCU, so that the test terminal is convenient to place and move, the operation speed of the control module 9 is ensured, and the test smoothness and the test efficiency of the test terminal are improved.
In a preferred embodiment, the earpiece 7 is an air conduction earpiece of the TDH39P type. The TDH39P type air conduction earphone is produced in Denmark, and the earphone parameters are as follows:
strength: 0-110 dB, and 5 dB is increased progressively;
frequency range: 125-8000 Hz;
precision frequency: plus or minus 0.05 percent;
in this embodiment, the TDH39P type air conduction earphone can meet the requirement of acoustic test for the strength range and precision range of the earphone 7.
In a preferred embodiment, the wireless communication module 4 is a WIFI communication module. The wireless communication module is widely applied to the fields of vehicle monitoring, remote control, remote measurement, small wireless network, wireless meter reading, access control system, cell paging, industrial data acquisition system, wireless tag, identity identification, non-contact RF smart card, small wireless data terminal, safety fire protection system, wireless remote control system, biological signal acquisition, hydrological weather monitoring, robot control, wireless 232 data communication, wireless 485/422 data communication, digital audio, digital image transmission and the like. The wireless communication comprises various communication modes such as WIFI, Zigbee, Z-wave, Bluetooth and the like. The wireless communication has good adaptability and expansibility. In this embodiment, the wireless communication module 4 selects the WIFI communication module, establishes a communication connection with the test host, transmits an audio file using an FTP protocol, and transmits data such as a play control command and response information using a TCP/IP protocol, so that a single test host separately controls different test terminals, thereby improving the randomness of an acoustic test, ensuring the fairness, and having good communication stability.
In the description of the present specification, the terms "connect", "mount", "fix", and the like are to be understood in a broad sense, for example, "connect" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, the description of the terms "one embodiment," "some embodiments," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. An acoustic test terminal is characterized by comprising a shell, a touch display screen, a power supply module, a wireless communication module, an audio generation module, an audio output module, an earphone and a control module;
the power supply module, the wireless communication module, the audio generation module, the audio output module and the control module are all fixedly arranged in the shell;
the control module is electrically connected with the touch display screen, the power supply module, the wireless communication module, the audio generation module and the audio output module for control;
the power supply module is used for providing working electric energy for the test terminal;
the wireless communication module is used for establishing communication connection with the test host, receiving a test instruction and uploading response information input by a tested person;
the audio generation module is used for generating audio data codes according to the test instruction and transmitting the generated audio data codes to the audio output module;
the audio output module is used for receiving the audio data codes, generating corresponding audio signals according to the audio data codes and transmitting the audio signals to the earphones;
the earphone is electrically connected with the audio output module and is used for playing the audio signal;
the touch display screen is fixedly arranged on the top surface of the shell and is used for displaying test questions and response keys corresponding to the audio signals, so that the tested person can select and/or input response information on the touch display screen according to the audio signals;
the top surface of the shell is fixedly provided with a startup and shutdown key and a work indicator light; the working indicator light is used for displaying the working state of the test terminal and comprises a starting indicator light, an earphone connection indicator light and a wireless connection indicator light,
the power-on indicator lamp is provided with two colors for prompting whether the test terminal is powered on or not and whether the test terminal works normally or not,
the earphone connecting indicator light is provided with two colors for displaying whether the test terminal is normally connected with the earphone or not,
the wireless connection indicator is used for displaying the communication connection state of the wireless communication module and the test host.
2. The acoustic test terminal of claim 1, wherein the power module is a battery-powered module/transformer-powered module; and one side of the shell is provided with a power interface which is used for connecting an alternating current power supply and charging and/or supplying power for the power module.
3. The acoustic test terminal of claim 1, wherein the earpiece is removably connected to the audio output module via an earpiece socket; the earphone jack is fixedly arranged on the front side of the shell.
4. The acoustic test terminal of claim 1, wherein an antenna interface is fixedly disposed at a rear side of the housing and electrically connected to the wireless communication module; the antenna interface is detachably provided with an external antenna.
5. The acoustic test terminal according to any one of claims 1 to 4, further comprising a storage module fixedly disposed inside the housing and electrically connected to the control module; the storage module is used for storing the test scheme and the audio file so that the audio output module can select the corresponding test scheme and the audio file according to the test instruction and play the test scheme and the audio file through the earphone to enable a tested person to perform a physiological acoustic test.
6. The acoustic test terminal of claim 5, wherein the touch display screen, the wireless communication module, the audio generation module, the audio output module, the earphone, the storage module, and the control module are electrically isolated from each other to block signal crosstalk paths between the modules.
7. The acoustic test terminal of claim 6, wherein the control module is an MCU.
8. The acoustic test terminal of claim 6, wherein the earpiece is an air conduction earpiece of the TDH39P type.
9. The acoustic test terminal of claim 6, wherein the wireless communication module is a WIFI communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120916614.XU CN216391418U (en) | 2021-04-29 | 2021-04-29 | Acoustic test terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120916614.XU CN216391418U (en) | 2021-04-29 | 2021-04-29 | Acoustic test terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216391418U true CN216391418U (en) | 2022-04-26 |
Family
ID=81216898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120916614.XU Active CN216391418U (en) | 2021-04-29 | 2021-04-29 | Acoustic test terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216391418U (en) |
-
2021
- 2021-04-29 CN CN202120916614.XU patent/CN216391418U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20050285562A1 (en) | Power converter with output voltage level indicating device | |
| US8174380B2 (en) | Electronic device dock with replicating status indicator | |
| CN111856256A (en) | Quick charging equipment test system and test method thereof | |
| CN216391418U (en) | Acoustic test terminal | |
| CN206133904U (en) | Equipment of checking meter is handed to bluetooth | |
| CN210514572U (en) | Test instrument with quick-charging test voltage conversion and electronic load | |
| CN206517112U (en) | A kind of sound equipment with wireless charging function | |
| CN210691574U (en) | Voice remote controller | |
| CN209786812U (en) | Wireless charger | |
| CN212588480U (en) | Bluetooth headset pairs device | |
| CN209105422U (en) | Portable music signal source | |
| CN206673656U (en) | Mobile charging device and electronic system | |
| CN206432983U (en) | Multi-functional construction intercom | |
| CN210490848U (en) | Wireless charging transmitting board for travel terminal | |
| TWI395388B (en) | Light sensor - based charger identification method | |
| TW201011519A (en) | Electronic apparatus with power indicator | |
| CN220557993U (en) | Monitor plug-in module with display screen | |
| CN111689474B (en) | Control system and control method of ozone generator | |
| CN218546979U (en) | Alignment tool for secondary circuit | |
| CN213304518U (en) | Power socket applied to microelectronic equipment | |
| CN210688013U (en) | Multifunctional desk lamp and control system thereof | |
| CN219247495U (en) | Treasured charges | |
| CN221038926U (en) | Multifunctional portable environment quality testing equipment | |
| CN212996401U (en) | Earphone type thermometer and body temperature monitoring system thereof | |
| CN211508675U (en) | Terminal power supply equipment for public charging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |