Wireless voice beeper gateway

Abstract

The utility model relates to the technical field of wireless communication, in particular to a wireless voice beeper gateway, which comprises a microprogrammed control unit (MCU), a high-power wireless module, a communication unit, a universal serial bus (USB) serial port module and a power supply unit. The MCU main control unit is in bidirectional connection with the high-power wireless module, the communication unit and the USB serial port module. According to the utility model, the LoRa 433MHz high-power wireless module is adopted to provide higher transmitting power and receiving sensitivity during wireless transmission of voice information, and the receiving sensitivity can reach-148DBM, so that the transmission distance is farther, the anti-interference performance is stronger, WiFi and Bluetooth are also selected as access modes, the terminal access is more diversified, the energy consumption of the wireless module is low, and the wireless module can be widely applied to the field of wireless communication. Therefore, the power consumption of the terminal is very low, and the service time is longer.

Description

Technical Field

[0001] This utility model relates to the field of wireless communication technology, and more specifically, to a wireless voice pager gateway. Background Technology

[0002] Wireless communication generally refers to radio communication, which is a communication method that modulates electrical signals such as sound, text, data, and images onto radio waves and transmits them to the other party through space and the ground. It is a communication method that uses radio electromagnetic waves to transmit information in space.

[0003] For example, CN221043129U relates to a wireless voice pager, including a main unit and multiple extension units. The extension units include: a low-power extension control module and an extension wireless module, a voice module, an extension power module, a switch detection module, and a wake-up module. The extension power module includes a first power port and a second power port. The first power port supplies power to the extension control module and the extension wireless module. The input terminal of the wake-up module is connected to the second power port, and the output terminal is connected to the voice module to control the power supply switch of the voice module according to the wake-up signal sent by the main control module. The detection terminal of the switch detection module is connected to the output terminal of the wake-up module, and the output terminal is connected to the extension control module.

[0004] Taking the aforementioned patented wireless voice pager as an example, the wireless voice pager gateways on the market mainly rely on the traditional 2.4G transmission technology. This type of wireless voice pager has a short transmission range and consumes more power at the terminal. It also has a very limited range of compatible devices, which cannot meet actual needs.

[0005] To improve transmission distance and reduce energy consumption, a wireless voice pager gateway is proposed. Utility Model Content

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

[0007] To achieve the above objectives, this utility model provides a wireless voice pager gateway, including an MCU main control unit, a high-power wireless module, a communication unit, a USB serial port module, and a power supply unit. The power supply unit is connected to the MCU main control unit, and the MCU main control unit is bidirectionally connected to the high-power wireless module, the communication unit, and the USB serial port module.

[0008] The MCU main control unit converts the digital signal input from the communication unit into a modulated radio frequency signal, and then transmits and receives the signal through the high-power wireless module.

[0009] As a further improvement to this technical solution, the communication unit includes a Bluetooth module and a WiFi module, both of which are connected to the MCU main control unit.

[0010] As a further improvement to this technical solution, the WiFi module includes a chip U2 and a terminal J3, wherein,

[0011] The UART-TX pin of the chip U2 is connected to the MCU U2RX pin of the MCU main control unit;

[0012] The UART-RX pin of the chip U2 is connected to the MCU U2TX pin of the MCU main control unit;

[0013] The DLTX pin of chip U2 is connected to pin 1 of terminal J3, the DLRX pin of chip U2 is connected to pin 2 of terminal J3, and pin 3 of terminal J3 is grounded.

[0014] The RST pin of the chip U2 is connected to resistor R13 and then to the collector of transistor Q3. Resistor R13 is connected to the V33 WIFI terminal. The base of transistor Q3 is connected to resistor R12. Resistor R12 is connected to the MCU_WIFI_RST pin of the MCU main control unit.

[0015] The VBAT pin of the chip U2 is connected to the V33 WIFI terminal.

[0016] As a further improvement to this technical solution, the high-power wireless module includes a chip U1 and a terminal J5, wherein,

[0017] The 8th pin of the chip U1 is connected to capacitor C2 and capacitor C3;

[0018] Pin 9 of chip U1 is connected to the other end of capacitor C2 and the other end of capacitor C3 and grounded;

[0019] Pin 10 of the chip U1 is connected to the VDD 4.5V terminal;

[0020] Pin 11 of the chip U1 is grounded;

[0021] The capacitors C17 and C18 at pin 14 of the chip U1 are connected in parallel to terminal J5;

[0022] Pin 15 of the chip U1 is connected to resistor R14 and the other end of capacitor C17. Resistor R14 is connected to pin 1 of terminal J5 and the other end of capacitor C18.

[0023] Pin 16 of the chip U1 is connected to terminal J5.

[0024] As a further improvement to this technical solution, the power supply unit includes a chip U6.

[0025] Pins 1 and 3 of the chip U6 are both connected to capacitors C12 and C16 and connected to the VUSB terminal. The other end of capacitor C12 is connected to the ground.

[0026] Pin 2 of the chip U6 is grounded;

[0027] Pin 5 of the chip U6 is connected to capacitors C13, C14, and C15 and then to the V33 WIFI terminal. Capacitor C13 is connected to the other end of capacitor C14 and the other end of capacitor C15 and then grounded.

[0028] As a further improvement to this technical solution, the USB serial port module includes terminal J2.

[0029] Pins 1 and 12 of terminal J2 are connected to GND, and pins 13, 14, 15 and 16 of terminal J2 are all grounded.

[0030] Pin 2 of terminal J2 is connected to the VUSB terminal, pins 3 and 9 of terminal J2 are connected to the SWDIO terminal, pins 4 and 10 of terminal J2 are connected to the SWCLK terminal, pins 5 and 7 of terminal J2 are connected to the USB_D- terminal, and pins 6 and 8 of terminal J2 are connected to the USB_D+ terminal.

[0031] Pin 11 of terminal J2 is connected to diode D2, and diode D2 is grounded.

[0032] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0033] This wireless voice pager gateway uses a LoRa 433MHz high-power wireless module to provide high transmission power and receiving sensitivity when transmitting voice information wirelessly. The receiving sensitivity can reach -148dBM, which makes the transmission distance longer and the anti-interference stronger. The access methods are also WiFi and Bluetooth, which makes the terminal access more diverse. The low power consumption of the wireless module makes the power consumption of the terminal very low and the usage time longer. Attached Figure Description

[0034] Figure 1 This is an overall structural diagram of the present invention;

[0035] Figure 2 This is a circuit diagram of the WIFI module of this utility model;

[0036] Figure 3 This is a circuit diagram of the high-power wireless module of this utility model;

[0037] Figure 4 This is a circuit diagram of the power supply unit of this utility model;

[0038] Figure 5 This is a circuit diagram of the USB serial port module of this utility model. Detailed Implementation

[0039] 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.

[0040] Existing wireless voice pager gateways primarily rely on traditional 2.4G transmission technology. This mode of wireless voice pager has a shorter transmission range, consumes more power at the terminal, and has a very limited range of compatible devices. To address these shortcomings, this invention proposes a device that offers a longer transmission range, lower terminal power consumption, and greater versatility in compatible devices. This significantly increases transmission distance, improves service efficiency, and expands the product's application scope.

[0041] Please see Figures 1-5 As shown, this embodiment provides a wireless voice pager gateway, including an MCU main control unit, a high-power wireless module, a communication unit, a USB serial port module, and a power supply unit. The power supply unit is connected to the MCU main control unit, and the MCU main control unit is bidirectionally connected to the high-power wireless module, the communication unit, and the USB serial port module.

[0042] The MCU main control unit converts the digital signal input from the communication unit into a modulated radio frequency signal, which is then transmitted and received externally through the high-power wireless module.

[0043] The communication unit includes a Bluetooth module and a WiFi module, both of which are connected to the MCU main control unit.

[0044] The WiFi module includes chip U2 and terminal J3, wherein...

[0045] The UART-TX pin of chip U2 is connected to the MCU U2RX pin of the MCU main control unit;

[0046] The UART-RX pin of chip U2 is connected to the MCU U2TX pin of the MCU main control unit;

[0047] The DLTX pin of chip U2 is connected to pin 1 of terminal J3, the DLRX pin of chip U2 is connected to pin 2 of terminal J3, and pin 3 of terminal J3 is grounded.

[0048] The RST pin of chip U2 is connected to resistor R13 and then to the collector of NPN transistor Q3. Resistor R13 is connected to the V33 WIFI terminal. The base of transistor Q3 is connected to resistor R12. Resistor R12 is connected to the MCU_WIFI_RST pin of the MCU main control unit.

[0049] Connect the VBAT pin of chip U2 to the V33 WIFI terminal.

[0050] Data is first generated at the application layer of the transmitting device. Before transmission, the data is modulated into a signal format suitable for wireless transmission. Terminal devices (such as smartphones and computers) receive the signal through their WiFi modules. The received signal strength, interference, and noise levels all affect the reception quality.

[0051] The received wireless signal is demodulated and converted back into digital data. The data is then parsed via the TCP / IP protocol stack and finally passed to the application layer for data processing. The application on the terminal performs corresponding operations based on the received data, such as displaying information or controlling devices.

[0052] The high-power wireless module includes a chip U1 and a terminal J5, wherein,

[0053] Pin 8 of chip U1 is connected to capacitor C2 and capacitor C3.

[0054] Pin 9 of chip U1 is connected to the other end of capacitor C2 and the other end of capacitor C3, and then grounded;

[0055] Pin 10 of chip U1 is connected to the VDD 4.5V terminal;

[0056] Pin 11 of chip U1 is grounded;

[0057] Capacitors C17 and C18 at pin 14 of chip U1 are connected in parallel to terminal J5;

[0058] Pin 15 of chip U1 is connected to resistor R14 and the other end of capacitor C17. Resistor R14 is connected to pin 1 of terminal J5 and the other end of capacitor C18.

[0059] Pin J5 of chip U1 (16-pin connector).

[0060] In this circuit, chip U1 is preferably an M_SX1278 chip. This embodiment uses a LoRa 433MHz high-power wireless module to provide high transmit power and receive sensitivity when wirelessly transmitting voice information. The receive sensitivity can reach -148dBM, which makes the transmission distance longer and the anti-interference stronger. The access methods are also selected as WiFi and Bluetooth, which makes the terminal access more diversified. The low power consumption of the wireless module makes the power consumption of the terminal very low and the usage time longer.

[0061] A 433MHz module typically consists of a transmitter module and a receiver module. The transmitter module converts digital signals into modulated radio frequency (RF) signals, while the receiver module demodulates the RF signals back into the original digital signals. In the transmitter module, a power amplifier (PA) increases the power of the transmitted signal, thereby extending its propagation distance. At the receiver, a low-noise amplifier enhances the strength of the received signal, reduces the impact of external noise, and thus improves system sensitivity. Frequency hopping spectrum (FHSS) or direct sequence spread spectrum (DSSS) techniques can further reduce the probability of signal interference.

[0062] The power supply unit includes chip U6.

[0063] Pins 1 and 3 of chip U6 are connected to capacitors C12 and C16 and then to the VUSB terminal. Capacitor C12 is connected to the other end of capacitor C16 and grounded.

[0064] Pin 2 of chip U6 is grounded;

[0065] Pin 5 of chip U6 is connected to capacitors C13, C14, and C15 and then to the V33 WIFI terminal. Capacitor C13 is connected to the other end of capacitor C14 and the other end of capacitor C15 and grounded.

[0066] The USB serial port module includes terminal J2.

[0067] Pins 1 and 12 of terminal J2 are connected to GND, and pins 13, 14, 15, and 16 of terminal J2 are all grounded.

[0068] Pin 2 of terminal J2 is connected to the VUSB terminal, pins 3 and 9 of terminal J2 are connected to the SWDIO terminal, pins 4 and 10 of terminal J2 are connected to the SWCLK terminal, pins 5 and 7 of terminal J2 are connected to the USB_D- terminal, and pins 6 and 8 of terminal J2 are connected to the USB_D+ terminal.

[0069] Pin 11 of terminal J2 is connected to diode D2, and diode D2 is grounded.

[0070] The USB serial port module is mainly used for future serial port upgrades.

[0071] This embodiment of the wireless voice call gateway employs an efficient wireless communication protocol to ensure low latency and high stability, and uses a high-quality audio codec to guarantee the clarity of voice calls. Specifically, it connects to the network via WiFi, enabling faster data reception and transmission. It connects to a mobile phone via Bluetooth, where the extension generates data and transmits it via serial port to the SX1278 module. The SX1278 module receives the data from the extension and modulates it, converting the digital signal into a radio frequency signal suitable for the 433MHz band. During transmission, the SX1278 module uses a high-power setting to increase transmission power, thereby improving signal propagation distance. The SX1278 employs spread spectrum technology (such as LoRa) or frequency hopping to enhance anti-interference capabilities, ensuring reliable data transmission even in complex environments. In the circuit design, filters and appropriate antenna layouts are used to reduce interference and improve receiving sensitivity. The MCU connects to the SX1278 module via GPIO or SPI interface to monitor the 433MHz band. When the SX1278 receives the signal, it demodulates it to recover the original data. The MCU then sends the processed data to the terminal device via a network protocol, allowing the terminal device to display and receive the data. This approach allows for more diverse terminal connectivity and improves reception sensitivity to -148dBm. It also significantly reduces terminal power consumption and results in a highly integrated and stable overall system.

[0072] 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 wireless voice pager gateway, characterized in that: It includes an MCU main control unit, a high-power wireless module, a communication unit, a USB serial port module, and a power supply unit. The power supply unit is connected to the MCU main control unit, and the MCU main control unit is bidirectionally connected to the high-power wireless module, the communication unit, and the USB serial port module. The MCU main control unit converts the digital signal input from the communication unit into a modulated radio frequency signal, and then transmits and receives the signal through the high-power wireless module.

2. The wireless voice pager gateway according to claim 1, characterized in that: The communication unit includes a Bluetooth module and a WiFi module, both of which are connected to the MCU main control unit.

3. The wireless voice pager gateway according to claim 2, characterized in that: The WiFi module includes a chip U2 and a terminal J3, wherein, The UART-TX pin of the chip U2 is connected to the MCU U2RX pin of the MCU main control unit; The UART-RX pin of the chip U2 is connected to the MCU U2TX pin of the MCU main control unit; The DLTX pin of chip U2 is connected to pin 1 of terminal J3, the DLRX pin of chip U2 is connected to pin 2 of terminal J3, and pin 3 of terminal J3 is grounded. The RST pin of the chip U2 is connected to resistor R13 and then to the collector of transistor Q3. Resistor R13 is connected to the V33 WIFI terminal. The base of transistor Q3 is connected to resistor R12. Resistor R12 is connected to the MCU_WIFI_RST pin of the MCU main control unit. The VBAT pin of the chip U2 is connected to the V33 WIFI terminal.

4. The wireless voice pager gateway according to claim 1, characterized in that: The high-power wireless module includes a chip U1 and a terminal J5, wherein... The 8th pin of the chip U1 is connected to capacitor C2 and capacitor C3; Pin 9 of chip U1 is connected to the other end of capacitor C2 and the other end of capacitor C3 and grounded; Pin 10 of the chip U1 is connected to the VDD 4.5V terminal; Pin 11 of the chip U1 is grounded; The capacitors C17 and C18 at pin 14 of the chip U1 are connected in parallel to terminal J5; Pin 15 of the chip U1 is connected to resistor R14 and the other end of capacitor C17. Resistor R14 is connected to pin 1 of terminal J5 and the other end of capacitor C18. Pin 16 of the chip U1 is connected to terminal J5.

5. The wireless voice pager gateway according to claim 1, characterized in that: The power supply unit includes a chip U6. Pins 1 and 3 of the chip U6 are both connected to capacitors C12 and C16 and connected to the VUSB terminal. The other end of capacitor C12 is connected to the ground. Pin 2 of the chip U6 is grounded; Pin 5 of the chip U6 is connected to capacitors C13, C14, and C15 and then to the V33 WIFI terminal. Capacitor C13 is connected to the other end of capacitor C14 and the other end of capacitor C15 and then grounded.

6. The wireless voice pager gateway according to claim 1, characterized in that: The USB serial port module includes terminal J2. Pins 1 and 12 of terminal J2 are connected to GND, and pins 13, 14, 15 and 16 of terminal J2 are all grounded. Pin 2 of terminal J2 is connected to the VUSB terminal, pins 3 and 9 of terminal J2 are connected to the SWDIO terminal, pins 4 and 10 of terminal J2 are connected to the SWCLK terminal, pins 5 and 7 of terminal J2 are connected to the USB_D- terminal, and pins 6 and 8 of terminal J2 are connected to the USB_D+ terminal. Pin 11 of terminal J2 is connected to diode D2, and diode D2 is grounded.

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