4G voice talkback beeper

Abstract

The utility model relates to a beeper, in particular to a 4G voice talkback beeper, which comprises a talkback unit and a battery unit for supplying power to the talkback unit. According to the utility model, the main control MCU is connected with the 4G wireless transmitting and receiving module through the I2C, and is connected to the Internet through the mobile communication network, so that the communication between the equipment and the cloud server is realized. The 4G transmitting / receiving antenna is connected with the 4G wireless transmitting and receiving module to determine the communication quality of 4G signals and receive radio signals from a base station, and the talkback unit performs data transmission through the wireless transmitting and receiving module, so that the defect of limited distance is eliminated, and long-distance transmission of voice information is ensured.

Description

Technical Field

[0001] This utility model relates to a pager, specifically a 4G voice intercom pager. Background Technology

[0002] A pager is a device used to notify a recipient about a specific service, typically used in the business services sector. It usually consists of one or more buttons that can be pressed by a service personnel or customer to notify others about the service status.

[0003] Existing voice pagers, such as the one described in CN208806796U, involve a wireless voice pager system based on the 433MHz frequency band. This system enables communication between the pager and the host computer using the 433MHz frequency band, resulting in high signal reception sensitivity and good diffraction performance between the pager and the host computer.

[0004] The 433MHz wireless transmitting and receiving circuit of this utility model uses the A7108 chip, enabling the pager to have long-distance transmission capabilities while maintaining low power consumption. During idle periods, the system is in sleep mode with extremely low power consumption. When the pager receives a wireless signal from the host, it automatically wakes up and resumes normal data transmission and reception. However, the problem lies in the fact that data transmission is based on the 433MHz frequency band, which has weak wall penetration and severe attenuation, thus limiting the wireless transmission distance.

[0005] In order to enable long-distance transmission of voice information, a 4G voice intercom pager is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a 4G voice intercom pager to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides a 4G voice intercom pager, including an intercom unit and a battery unit for powering the intercom unit. The intercom unit includes a main control MCU, a 4G wireless transmission and reception module, a SIM card module, a 4G transmission / reception antenna, a MIC voice acquisition module, and an audio power amplifier module. The main control MCU is connected to the 4G wireless transmission and reception module, the MIC voice acquisition module, and the audio power amplifier module. The 4G wireless transmission and reception module is connected to the SIM card module and the 4G transmission / reception antenna.

[0008] The main control MCU converts voice information into radio signals through the 4G wireless transmission and reception module, and then transmits them through the 4G transmission / reception antenna.

[0009] As a further improvement to this technical solution, the 4G wireless transmitter / receiver module includes a chip U9, and the 4G transmitter / receiver antenna includes a terminal J6.

[0010] The chip U9 has pin 1 connected to PWRKEY, pin 6 connected to USB_VBUS, pin 7 connected to USB_DP, pin 8 connected to USB_DM, pin 10 connected to SIM_VDD, pin 11 connected to SIM_CLK, pin 12 connected to SIM_DATA, pin 13 connected to SIM_VDD, pin 14 connected to TXD_4G, pin 15 connected to RXD_4G, and pin 50 connected to DTR_4G.

[0011] Pins 4, 9, 17, 20, 21, 22, 24, 28, 36, 42, 43, 44, 45, and 46 of the chip U9 are all grounded;

[0012] The chip U9 has pin 16 connected to the RESET_4G terminal, pins 18 and 19 connected to the VBAT terminal, pin 23 connected to resistor R29 and capacitor C53, pin 25 connected to the BOOT terminal, and pin 27 connected to the STA_4G terminal.

[0013] The resistor R29 is connected to the capacitor C55 and to pin 3 of the terminal J6. The capacitor C53 is connected to the other end of the capacitor C55, pins 1 and 2 of the terminal J6, and grounded.

[0014] Pin 30 of the chip U9 is connected to resistor R102, and resistor R102 is grounded;

[0015] The 47th pin of the chip U9 is connected to capacitor C58, and capacitor C58 is grounded.

[0016] As a further improvement to this technical solution, the SIM card module includes a chip U20.

[0017] Pin 1 of the chip U20 is grounded;

[0018] The 3rd pin of the chip U20 is connected to capacitor C123 and resistor R110, and resistor R110 is connected to the SIM_DATA terminal;

[0019] The 6th pin of the chip U20 is connected to capacitor C122 and resistor R109, and resistor R109 is connected to the SIM_CLK terminal;

[0020] Pin 7 of the chip U20 is connected to capacitor C121 and resistor R104, and resistor R104 is connected to the SIM_RST terminal.

[0021] Pin 8 of the chip U20 is connected to capacitors C91 and C118 and then to the SIM_VDD terminal. Capacitor C91 is connected to the other end of capacitor C118 and grounded.

[0022] The capacitor C121 is connected to the other end of the capacitor C122 and the other end of the capacitor C123 and grounded.

[0023] As a further improvement to this technical solution, the MIC voice acquisition module includes a chip U12.

[0024] Pin 1 of chip U12 is connected to resistor R50 and capacitor C72. Resistor R50 is connected to the MIC2-BIAS terminal, and capacitor C72 is grounded.

[0025] The 4th pin of the chip U12 is connected to capacitor C70 and capacitor C71. Capacitor C70 is grounded and capacitor C71 is connected to the M2+ terminal.

[0026] Pins 2 and 3 of the chip U12 are both grounded.

[0027] As a further improvement to this technical solution, the audio amplifier module includes a chip U11.

[0028] Pin 1 of the chip U11 is connected to the SPK_SD terminal, pin 5 is connected to the VON terminal, and pin 8 is connected to the VOP terminal;

[0029] Pin 2 of the chip U11 is connected to capacitor C44, and capacitor C44 is grounded;

[0030] Pin 3 of the chip U11 is connected to capacitor C54 and resistor R48. Resistor R48 is connected to capacitor C34, and capacitor C34 is connected to the LHP terminal.

[0031] Pin 4 of the chip U11 is connected to resistor R47 and the other end of capacitor C54. Resistor R47 is connected to capacitor C35, and capacitor C35 is grounded.

[0032] Pin 6 of chip U11 is connected to capacitor C21 and capacitor C53. Pin 7 of chip U11 is connected to the other end of capacitor C21 and the other end of capacitor C53 and grounded.

[0033] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0034] In this 4G voice intercom, the main control MCU is connected to the 4G wireless transmitter and receiver module via I2C, and connects to the Internet via the mobile communication network to enable communication between the device and the cloud server. The 4G transmitter / receiver antenna is connected to the 4G wireless transmitter and receiver module, which determines the communication quality of the 4G signal and also receives radio signals from the base station. The intercom unit transmits data through the wireless transmitter and receiver module, thereby eliminating the limitation of distance and ensuring that voice information can be transmitted over long distances. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0036] Figure 2 This is a circuit diagram of the 4G wireless transmitter / receiver module and the 4G transmitter / receiver antenna of this utility model;

[0037] Figure 3 This is a circuit diagram of the SIM card module of this utility model;

[0038] Figure 4 This is a circuit diagram of the MIC voice acquisition module of this utility model;

[0039] Figure 5 This is the circuit diagram of the audio power amplifier module of this utility model. Detailed Implementation

[0040] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] With the development of mobile communication technology, the widespread application of 4G (fourth-generation mobile communication technology) has provided a stable communication foundation for 4G voice intercom pagers. Compared with previous wireless communication technologies, 4G networks have higher data transmission speeds and lower latency, making voice data transmission smoother and more efficient, with a lower fault tolerance. Moreover, unlike traditional intercom pager devices on the market, 4G is no longer limited by distance, offering wider coverage.

[0042] Therefore, please refer to Figures 1-5 As shown, this embodiment provides a 4G voice intercom pager, including an intercom unit and a battery unit that powers the intercom unit. The intercom unit includes a main control MCU, a 4G wireless transmission and reception module, a SIM card module, a 4G transmission / reception antenna, a MIC voice acquisition module, and an audio power amplifier module. The main control MCU is connected to the 4G wireless transmission and reception module, the MIC voice acquisition module, and the audio power amplifier module. The 4G wireless transmission and reception module is connected to the SIM card module and the 4G transmission / reception antenna.

[0043] The main control MCU converts voice information into radio signals through the 4G wireless transmission and reception module, and then transmits them through the 4G transmission / reception antenna. The voice information is then transmitted via the 4G wireless network signal, which solves the problems of traditional voice intercom pagers, such as weak wall penetration, severe attenuation, and inability to transmit over long distances.

[0044] The main control MCU is STMicroelectronics' STM32F103RCT6 from the ST32 series.

[0045] The battery unit is powered by a lithium battery, and the voltage is converted to 3.3V by a DC-DC step-down chip to supply power to various unit circuits, such as the main control MCU and serial communication. It also incorporates a built-in lithium battery charging circuit, using the highly stable and linear charging current TP4056 to ensure the complete operation of the system.

[0046] The 4G wireless transmitter / receiver module includes chip U9, and the 4G transmitter / receiver antenna includes terminal J6.

[0047] Pin 1 of chip U9 is connected to PWRKEY, pin 6 is connected to USB_VBUS, pin 7 is connected to USB_DP, pin 8 is connected to USB_DM, pin 10 is connected to SIM_VDD, pin 11 is connected to SIM_CLK, pin 12 is connected to SIM_DATA, pin 13 is connected to SIM_VDD, pin 14 is connected to TXD_4G, pin 15 is connected to RXD_4G, and pin 50 is connected to DTR_4G.

[0048] Pins 4, 9, 17, 20, 21, 22, 24, 28, 36, 42, 43, 44, 45, and 46 of chip U9 are all grounded;

[0049] Pin 16 of chip U9 is connected to the RESET_4G terminal, pins 18 and 19 are both connected to the VBAT terminal, pin 23 is connected to resistor R29 and capacitor C53, pin 25 is connected to the BOOT terminal, and pin 27 is connected to the STA_4G terminal.

[0050] Resistor R29 is connected to capacitor C55 and then to pin 3 of terminal J6. Capacitor C53 is connected to the other end of capacitor C55, pins 1 and 2 of terminal J6, and grounded.

[0051] Pin 30 of chip U9 is connected to resistor R102, and resistor R102 is grounded;

[0052] Pin 47 of chip U9 is connected to capacitor C58, and capacitor C58 is grounded.

[0053] The 4G wireless transmitter and receiver module adopts the 4G CAT1 module, which is small in size, high in speed, low in latency, and can realize bidirectional transparent transmission between serial port devices and network servers. It has a wide network coverage and provides stable wireless voice transmission for 4G voice intercom pagers, so that intercom is no longer limited by distance.

[0054] The main control MCU and the 4G wireless transmitter and receiver module are connected via a serial port with TTL level.

[0055] The 4G transmit / receive antenna employs a high-gain, high-sensitivity 4G antenna to meet the requirements of high-speed data transmission and wide bandwidth, ensuring unrestricted wireless voice communication and improving transmission smoothness. It connects to the 4G wireless transmit / receive module via an IPEX interface.

[0056] The SIM card module includes the U20 chip.

[0057] Pin 1 of chip U20 is grounded;

[0058] Pin 3 of chip U20 is connected to capacitor C123 and resistor R110. Resistor R110 is connected to the SIM_DATA terminal.

[0059] Pin 6 of chip U20 is connected to capacitor C122 and resistor R109. Resistor R109 is connected to the SIM_CLK terminal.

[0060] Pin 7 of chip U20 is connected to capacitor C121 and resistor R104. Resistor R104 is connected to the SIM_RST terminal.

[0061] Pin 8 of chip U20 is connected to capacitors C91 and C118 and then to the SIM_VDD terminal. Capacitor C91 is connected to the other end of capacitor C118 and grounded.

[0062] Capacitor C121 is connected to the other end of capacitor C122 and the other end of capacitor C123 and grounded.

[0063] The SIM card module uses an IoT data card, which connects to the Internet through a mobile communication network to enable communication between the device and the cloud.

[0064] The SIM card module is connected to the 4G wireless transmitter and receiver module via the I2C communication protocol.

[0065] The MIC voice acquisition module includes chip U12.

[0066] Pin 1 of chip U12 is connected to resistor R50 and capacitor C72. Resistor R50 is connected to the MIC2-BIAS terminal, and capacitor C72 is grounded.

[0067] Pin 4 of chip U12 is connected to capacitor C70 and capacitor C71. Capacitor C70 is grounded, and capacitor C71 is connected to the M2+ terminal.

[0068] Pins 2 and 3 of chip U12 are grounded.

[0069] The MIC voice acquisition uses an omnidirectional silicon microphone to collect sound signals. The collected analog sound signals are then connected to the ADC pin of the main control MCU, and the analog sound signals are converted into digital signals for transmission.

[0070] The audio amplifier module includes chip U11.

[0071] Pin 1 of chip U11 is connected to the SPK_SD terminal, pin 5 is connected to the VON terminal, and pin 8 is connected to the VOP terminal;

[0072] Pin 2 of chip U11 is connected to capacitor C44, and capacitor C44 is grounded;

[0073] Pin 3 of chip U11 is connected to capacitor C54 and resistor R48. Resistor R48 is connected to capacitor C34, and capacitor C34 is connected to the LHP terminal.

[0074] Pin 4 of chip U11 is connected to resistor R47 and the other end of capacitor C54. Resistor R47 is connected to capacitor C35, and capacitor C35 is grounded.

[0075] Pin 6 of chip U11 is connected to capacitor C21 and capacitor C53. Pin 7 of chip U11 is connected to the other end of capacitor C21 and the other end of capacitor C53 and grounded.

[0076] The audio amplifier uses the NS4150B amplifier chip. The analog audio signal is input from the DAC pin of the main control MCU, amplified by the amplifier chip, and then output to the speaker.

[0077] In this invention, the main control MCU uses an STMicroelectronics STM32 series microcontroller as the control unit, which offers high stability, powerful performance, and ease of operation. As the brain of the entire system, the main control MCU connects to each unit via corresponding I / O pins. Simultaneously, the 4G wireless transmitter / receiver module uses a 4G cat1 module, connected to the main control MCU via a serial port, converting data into radio signals for transmission and reception. This is a key feature enabling unlimited voice communication distance; the voice intercom can be used wherever there is a 4G network. The SIM card works in conjunction with the 4G wireless transmitter / receiver module, connecting via I2C. Using a China Mobile IoT data card, it connects to the internet through the mobile communication network, enabling communication between the device and the cloud server. The 4G transmitter / receiver antenna, connected to the 4G wireless transmitter / receiver module, is a crucial component for transmitting radio signals to the base station, determining the communication quality of the 4G signal. It also receives radio signals from the base station. The microphone (MIC) captures audio signals via a silicon microphone. These signals are capacitively coupled to the ADC pin of the main control MCU, where they are converted into digital signals. This completes the microphone's audio capture. The silicon microphone also offers a lower signal-to-noise ratio and higher stability, resulting in clearer sound and improved product quality. The audio amplifier, connected to the main control MCU via the DAC pin, converts digital audio signals into analog audio signals for output, which are then played through speakers.

[0078] In summary, this utility model is a portable device that integrates modern mobile communication technology and intelligent wireless intercom function. With its advanced 4G mobile communication technology, Internet of Things technology and intelligent technology background, it has shown broad application prospects and market potential in many fields such as smart homes, medical monitoring, monitoring of special populations, as well as enterprise offices and catering services.

[0079] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A 4G voice intercom pager, characterized in that: The device includes an intercom unit and a battery unit that powers the intercom unit. The intercom unit includes a main control MCU, a 4G wireless transmission and reception module, a SIM card module, a 4G transmission / reception antenna, a MIC voice acquisition module, and an audio power amplifier module. The main control MCU is connected to the 4G wireless transmission and reception module, the MIC voice acquisition module, and the audio power amplifier module. The 4G wireless transmission and reception module is connected to the SIM card module and the 4G transmission / reception antenna. The main control MCU converts voice information into radio signals through the 4G wireless transmission and reception module, and then transmits them through the 4G transmission / reception antenna.

2. The 4G voice intercom pager according to claim 1, characterized in that: The 4G wireless transmitter / receiver module includes a chip U9, and the 4G transmitter / receiver antenna includes a terminal J6. The chip U9 has pin 1 connected to PWRKEY, pin 6 connected to USB_VBUS, pin 7 connected to USB_DP, pin 8 connected to USB_DM, pin 10 connected to SIM_VDD, pin 11 connected to SIM_CLK, pin 12 connected to SIM_DATA, pin 13 connected to SIM_VDD, pin 14 connected to TXD_4G, pin 15 connected to RXD_4G, and pin 50 connected to DTR_4G. Pins 4, 9, 17, 20, 21, 22, 24, 28, 36, 42, 43, 44, 45, and 46 of the chip U9 are all grounded; The chip U9 has pin 16 connected to the RESET_4G terminal, pins 18 and 19 connected to the VBAT terminal, pin 23 connected to resistor R29 and capacitor C53, pin 25 connected to the BOOT terminal, and pin 27 connected to the STA_4G terminal. The resistor R29 is connected to the capacitor C55 and to pin 3 of the terminal J6. The capacitor C53 is connected to the other end of the capacitor C55, pins 1 and 2 of the terminal J6, and grounded. Pin 30 of the chip U9 is connected to resistor R102, and resistor R102 is grounded; The 47th pin of the chip U9 is connected to capacitor C58, and capacitor C58 is grounded.

3. The 4G voice intercom pager according to claim 2, characterized in that: The SIM card module includes a chip U20. Pin 1 of the chip U20 is grounded; The 3rd pin of the chip U20 is connected to capacitor C123 and resistor R110, and resistor R110 is connected to the SIM_DATA terminal; The 6th pin of the chip U20 is connected to capacitor C122 and resistor R109, and resistor R109 is connected to the SIM_CLK terminal; Pin 7 of the chip U20 is connected to capacitor C121 and resistor R104, and resistor R104 is connected to the SIM_RST terminal. Pin 8 of the chip U20 is connected to capacitors C91 and C118 and then to the SIM_VDD terminal. Capacitor C91 is connected to the other end of capacitor C118 and grounded. The capacitor C121 is connected to the other end of the capacitor C122 and the other end of the capacitor C123 and grounded.

4. The 4G voice intercom pager according to claim 3, characterized in that: The MIC voice acquisition module includes a chip U12. Pin 1 of chip U12 is connected to resistor R50 and capacitor C72. Resistor R50 is connected to the MIC2-BIAS terminal, and capacitor C72 is grounded. The 4th pin of the chip U12 is connected to capacitor C70 and capacitor C71. Capacitor C70 is grounded and capacitor C71 is connected to the M2+ terminal. Pins 2 and 3 of the chip U12 are both grounded.

5. The 4G voice intercom pager according to claim 4, characterized in that: The audio amplifier module includes a chip U11. Pin 1 of the chip U11 is connected to the SPK_SD terminal, pin 5 is connected to the VON terminal, and pin 8 is connected to the VOP terminal; Pin 2 of the chip U11 is connected to capacitor C44, and capacitor C44 is grounded; Pin 3 of the chip U11 is connected to capacitor C54 and resistor R48. Resistor R48 is connected to capacitor C34, and capacitor C34 is connected to the LHP terminal. Pin 4 of the chip U11 is connected to resistor R47 and the other end of capacitor C54. Resistor R47 is connected to capacitor C35, and capacitor C35 is grounded. Pin 6 of chip U11 is connected to capacitor C21 and capacitor C53. Pin 7 of chip U11 is connected to the other end of capacitor C21 and the other end of capacitor C53 and grounded.

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