Data transmission equipment based on 4G network technology
Through data transmission equipment based on 4G network technology, the shortcomings of walkie-talkies in call distance, effect and hardware cost have been solved, and simple circuits, low power consumption, long life and convenient installation have been achieved, which has improved call reliability and market competitiveness.
Patent Information
- Application Number
- CN202422526237.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-10-18
AI Technical Summary
Existing walkie-talkies have shortcomings in terms of call distance, call quality and hardware cost, especially in long-distance calls and noisy environments, and the hardware debugging is complex and costly.
It uses data transmission equipment based on 4G network technology, including a control unit, power module, voice module and 4G module. Audio data is transmitted via the 4G module, achieving simple circuit, low power consumption, long life, flexible installation, easy use, and supporting remote OTA and offline automatic reconnection.
It improves the reliability and stability of intercom calls, reduces hardware costs, improves production efficiency, increases market competitiveness, and has the advantages of low power consumption, long life and easy installation.
Smart Images
Figure CN223428575U_ABST
Abstract
Description
Technical Field
[0001] The utility model is applied to the technical field of 4G modules, and in particular relates to a data transmission device based on 4G network technology. Background Art
[0002] With the advent of the 4G era, people are making longer-distance calls through apps like WeChat, QQ, and DingTalk. Furthermore, with national support for base station construction, 4G signals are covering more and more areas, making people's lives faster and more efficient. For the elevator industry, existing intercoms face inconsistencies in call distance, quality, and anti-interference. When the call distance is too long, the communication rate must be reduced to ensure stable signal transmission to the target device. However, if the communication rate is too low, the customer experience will be affected, so a trade-off must be made.
[0003] Most of the existing walkie-talkies use analog conversion circuits. This circuit is low in cost, but requires longer hardware debugging. Not only the impedance between devices must be considered, but also the anti-interference ability of the devices in harsh environments must be considered. In order for the equipment to achieve the desired effect, more effort has to be spent on debugging.
[0004] However, existing walkie-talkies cannot transmit over long distances, otherwise transmission efficiency is affected. They also lack automatic call quality adjustment, which can affect receiver sound in noisy environments. Furthermore, existing walkie-talkie hardware costs are high, requiring costly upgrades to better circuits to achieve better performance. Therefore, it is necessary to provide a data transmission device based on 4G network technology that offers simple circuitry, low power consumption, a long lifespan, flexible installation, ease of use, remote OTA functionality, and automatic offline reconnection. Utility Model Content
[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the existing technology and provide a data transmission device based on 4G network technology, which has the advantages of simple circuit, low power consumption, long life, flexible installation, easy use, remote OTA function, and offline automatic reconnection.
[0006] The technical solution adopted by the utility model is as follows: the utility model includes a control unit, a power module, a voice module, a 4G module, and an audio interface. The power module is connected to the control unit, the 4G module, and the voice module. The 4G module and the voice module are both connected to the control unit. The voice module is connected to an external intercom via the audio interface. The voice module collects the sound of the external intercom through the audio interface, converts the sound into playable digital audio after the collection is completed, and then sends the converted audio data to the control unit through the serial port. After receiving the audio data, the control unit is connected to the network through the 4G module and sends the audio data to the external device.
[0007] From the above, we can see that this application organizes and transmits data through the control unit and 4G module, greatly improving the reliability and stability of intercom calls; the circuit is simple and requires few components, which is conducive to reducing costs, greatly improving production efficiency, and increasing market competitiveness. It has low power consumption, long life, flexible installation, easy use, remote OTA, and offline automatic reconnection functions.
[0008] A preferred solution is that the 4G module is connected to a SIM card interface, and the SIM card interface is inserted with a SIM card.
[0009] A preferred solution is that the RX pin and the TX pin of the control unit are both connected to the corresponding pins of the voice module.
[0010] A preferred solution is that the MCU_TXD pin and the MCU_RXD pin of the control unit are both connected to the GSM_TXD pin and the GSM_RXD pin of the 4G module.
[0011] A preferred solution is that the A_DACL pin and the MICIN pin of the voice module are both connected to the pins corresponding to the audio interface.
[0012] A preferred solution is that the power module includes an inductor, a synchronous buck converter, a forward low-dropout voltage regulator, and a capacitor. The input voltage is connected to the VIN terminal and EN terminal of the synchronous buck converter through the inductor, the BST terminal, SW terminal, and FB terminal of the synchronous buck converter are connected to the IN terminal of the forward low-dropout voltage regulator, and the OUT terminal of the forward low-dropout voltage regulator outputs a 3.3V voltage through the capacitor. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural diagram of the utility model;
[0014] Figure 2 is a circuit schematic diagram of the control unit;
[0015] Figure 3is a circuit schematic diagram of the voice module;
[0016] Figure 4 is a circuit schematic diagram of the 4G module;
[0017] Figure 5 4 is a circuit schematic diagram of the power module. DETAILED DESCRIPTION
[0018] like Figures 1 to 5 As shown, in this embodiment, the utility model includes a control unit U1, a power module 2, a voice module U3, a 4G module 4, and an audio interface 5. The power module 2 is connected to the control unit U1, the 4G module 4, and the voice module U3. The 4G module 4 and the voice module U3 are both connected to the control unit U1. The voice module U3 is connected to the external intercom via the audio interface 5; the voice module U3 collects the sound of the external intercom through the audio interface 5, and converts the sound into playable digital audio after the collection is completed, and then sends the converted audio data to the control unit U1 through the serial port. After receiving the audio data, the control unit U1 is connected to the network through the 4G module 4 and sends the audio data to the external device.
[0019] The voice module U3 collects the sound of the external intercom through the audio interface 5. After the collection is completed, the sound is converted into playable digital audio through the internal algorithm, and then the converted audio data is sent to the control unit U1 through the serial port. After receiving the audio data, the control unit U1 connects to the network through the 4G module 4 and sends the audio data to the external specified device.
[0020] like Figure 1 As shown, in this embodiment, the 4G module 4 is connected to a SIM card interface 6, and a SIM card is inserted into the SIM card interface 6. After the SIM card is connected to the SIM card interface 6, the 4G module 4 plays a role in wireless communication.
[0021] like Figures 2 to 3 As shown, in this embodiment, the RX pin and the TX pin of the control unit U1 are both connected to the corresponding pins of the voice module U3. The model of the control unit U1 is STM32F103C8T6.
[0022] like Figures 2 to 4 As shown, in this embodiment, the MCU_TXD pin and the MCU_RXD pin of the control unit U1 are both connected to the GSM_TXD pin and the GSM_RXD pin of the 4G module 4.
[0023] like Figure 3As shown, in this embodiment, the A_DACL pin and the MICIN pin of the voice module U3 are both connected to the corresponding pins of the audio interface 5.
[0024] like Figure 5 As shown, in this embodiment, the power module 2 includes an inductor L1, a synchronous buck converter U5, a forward low-dropout voltage regulator U6, and a capacitor C41. The input voltage is connected to the VIN terminal and EN terminal of the synchronous buck converter U5 through the inductor L1, and the BST terminal, SW terminal, and FB terminal of the synchronous buck converter U5 are connected to the IN terminal of the forward low-dropout voltage regulator U6. The OUT terminal of the forward low-dropout voltage regulator U6 outputs a 3.3V voltage through the capacitor C41.
[0025] The input power is processed by the voltage regulator chip and then passes through inductor L1, reducing high-frequency noise and spike interference on the power line while also absorbing static electricity pulses. The output of the voltage regulator circuit passes through capacitor C41, which acts as a filter, effectively filtering out high-frequency signals. The circuit is connected to a transient suppression diode (TVS) that rapidly reduces the high impedance between its two terminals to a low impedance when a high-energy surge is input. This absorbs surge power of up to several kilowatts and clamps the voltage between the two terminals to a predetermined value, effectively protecting the delicate components in the subsequent electronic circuitry from damage caused by various surge pulses.
[0026] The 12V is stepped down to 3.9V by the synchronous buck converter U5 and then supplies power to the 4G module 4. The 3.9V is then stabilized to 3.3V by the forward low-dropout regulator U6 and supplied to the control unit U1 and the voice module U3.
Claims
1. A data transmission device based on 4G network technology, characterized by: It comprises a control unit (U1), a power module (2), a voice module (U3), a 4G module (4), and an audio interface (5). The power module (2) is connected to the control unit (U1), the 4G module (4), and the voice module (U3). The 4G module (4) and the voice module (U3) are both connected to the control unit (U1). The voice module (U3) is connected to an external intercom via the audio interface (5). The voice module (U3) collects the sound of the external intercom via the audio interface (5), converts the sound into playable digital audio after the collection is completed, and then sends the converted audio data to the control unit (U1) via the serial port. After receiving the audio data, the control unit (U1) connects to the network via the 4G module (4) and sends the audio data to the external device.
2. The data transmission device based on 4G network technology according to claim 1, characterized in that: The 4G module (4) is connected to a SIM card interface (6), and a SIM card is inserted into the SIM card interface (6).
3. The data transmission device based on 4G network technology according to claim 1, characterized in that: The RX pin and the TX pin of the control unit (U1) are both connected to the corresponding pins of the voice module (U3).
4. The data transmission device based on 4G network technology according to claim 1, characterized in that: The MCU_TXD pin and the MCU_RXD pin of the control unit (U1) are both connected to the GSM_TXD pin and the GSM_RXD pin of the 4G module (4).
5. The data transmission device based on 4G network technology according to claim 1, characterized in that: The A_DACL pin and the MICIN pin of the voice module (U3) are both connected to the corresponding pins of the audio interface (5).
6. The data transmission device based on 4G network technology according to claim 1, characterized in that: The power supply module (2) comprises an inductor (L1), a synchronous buck converter (U5), a forward low-voltage dropout regulator (U6), and a capacitor (C41); the input voltage is connected to the VIN terminal and the EN terminal of the synchronous buck converter (U5) via the inductor (L1); the BST terminal, the SW terminal, and the FB terminal of the synchronous buck converter (U5) are connected to the IN terminal of the forward low-voltage dropout regulator (U6); and the OUT terminal of the forward low-voltage dropout regulator (U6) outputs a 3.3V voltage via the capacitor (C41).