A miniature mesh wireless ad hoc network communication device with built-in battery

Abstract

The utility model discloses a kind of miniature Mesh wireless ad hoc network communication devices of built-in battery, belong to fire rescue emergency communication field.The device is equipped with cooling fan, and the device is equipped with wireless charging management module, lithium battery module, battery power supply management module, MCU signal processing module, charging coil, narrowband ad hoc network communication module and miniature broadband ad hoc network communication module.The MCU signal processing module is communicated with narrowband ad hoc network communication module, miniature broadband ad hoc network communication module and cooling fan, and one signal output end of MCU signal processing module exports control signal, controls the opening and closing of miniature broadband ad hoc network communication module.The device can be carried by micro small life search and rescue robot and arranged in building collapse ruins and narrow space to construct self-organizing emergency communication network, to provide communication support for micro small life search and rescue robot reliable control and data stable transmission.

Description

Technical Field

[0001] This utility model relates to the field of emergency communication for fire rescue, specifically to a miniature Mesh wireless self-organizing network communication device with a built-in battery. Background Technology

[0002] In disaster scenarios such as earthquakes and landslides, the communication needs of life-saving robots in collapsed building ruins and confined spaces are becoming increasingly prominent. Traditional communication equipment faces multiple challenges in these situations. While wired communication systems offer stable signals, they require cable laying, lack flexibility, and are easily damaged in complex rubble environments. Traditional wireless communication devices, such as portable base stations, while offering long communication distances in emergency scenarios, are large, heavy, and consume a lot of power, making them unsuitable for deployment and use in confined spaces.

[0003] The aforementioned technological deficiencies mean that existing communication devices struggle to meet the demands for efficient, reliable, and sustained communication in scenarios such as collapsed building ruins and confined spaces, and in particular, they cannot support highly reliable control and stable data transmission for micro-robots in complex environments. Utility Model Content

[0004] This utility model patent addresses the communication needs in scenarios such as collapsed building ruins and confined spaces. To solve the technical problems existing in the prior art, it provides a miniature mesh wireless self-organizing network communication device with a built-in battery.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a miniature Mesh wireless self-organizing network communication device with a built-in battery, including a housing, a cooling fan outside the housing, and a wireless charging management module, a lithium battery module, a battery power management module, an MCU signal processing module, a charging coil, a narrowband self-organizing network communication module, and a miniature broadband self-organizing network communication module.

[0006] The micro broadband self-organizing network communication module is located near the cooling fan. The charging coil is attached to the inner wall of the housing. The cooling fan is an IP68 waterproof fan, which is suitable for humid, dusty or water-sensitive environments.

[0007] The power output terminal of the charging coil is connected in sequence to the wireless charging management module, the lithium battery module, and the battery power management module. The power output terminal of the battery power management module is connected to the MCU signal processing module, the narrowband self-organizing network communication module, the micro broadband self-organizing network communication module, and the cooling fan.

[0008] The MCU signal processing module is connected to the narrowband self-organizing network communication module, the micro broadband self-organizing network communication module, and the cooling fan. The narrowband self-organizing network communication module is always on. One signal output terminal of the MCU signal processing module outputs a control signal to control the on and off of the micro broadband self-organizing network communication module. The signal input terminal of the MCU signal processing module is connected to the operation data signal output terminals of the narrowband self-organizing network communication module and the micro broadband self-organizing network communication module. The signal output terminal of the MCU signal processing module is connected to the narrowband self-organizing network communication module, which transmits operation data back to the control console.

[0009] The wireless charging management module includes chip U2 and chip U3. Chip U2 is NU1680-QFN16 and chip U3 is TP4056.

[0010] The MCU signal processing module includes an STC32G12K128 microcontroller. The I / O interfaces of pins 1 and 2 of the STC32G12K128 microcontroller are connected to pins 4 and 6 of the OK-14-GM016 micro broadband self-organizing network communication module. The I / O interfaces of pins 29 and 30 of the MCU signal processing module are connected to pins 5 and 6 of the 255MNL01 narrowband self-organizing network communication module chip.

[0011] Pin 14 of the 255MNL01 chip in the narrowband self-organizing network communication module is connected to an external flexible antenna. Through LoRa modulation and Mesh self-organizing network protocol, it enables small data coverage networking in complex environments. The module can be turned on and off via AT commands, and it also has the function of debugging data transmission.

[0012] Pins 4 and 6 of the OK-14-GM016 chip in the micro broadband self-organizing network communication module are serial communication interfaces used to communicate with the UART of the MCU signal processing module. The micro broadband self-organizing network communication module includes a BC847BW transistor. The BC847BW transistor and R23 form a driving circuit to control the switching state of the MOSFET. The MOSFET switch controls the power supply of the micro broadband self-organizing network communication module.

[0013] Beneficial effects

[0014] This invention provides a miniature mesh wireless self-organizing network communication device with a built-in battery. The circuitry is streamlined, and a wireless charging structure is used for charging and startup. The device has no interfaces on its casing, making it suitable for use in complex environments. A microprocessor organically combines broadband and narrowband self-organizing network modules. Under energy-constrained conditions, the narrowband link controls the sleep and wake-up of the broadband self-organizing network module, minimizing power consumption and extending usage time. The overall device is lightweight, compact, and has excellent communication performance, enabling the construction of a self-organizing emergency communication network in confined spaces, providing support for highly reliable control and stable data transmission for micro-robots. Attached Figure Description

[0015] Figure 1 Electrical structure connection diagram of this utility model;

[0016] Figure 2 Overall structural diagram of this utility model;

[0017] Figure 3 The circuit diagram of the wireless charging management module in this utility model;

[0018] Figure 4 The circuit diagram of the power supply management module in this utility model;

[0019] Figure 5 The circuit schematic of the MCU signal processing module in this utility model;

[0020] Figure 6 The circuit diagram of the narrowband self-organizing network communication module in this utility model;

[0021] Figure 7 The circuit diagram of the micro broadband self-organizing network communication module in this utility model;

[0022] Figure 8 The schematic diagram of the cooling fan interface circuit in this utility model. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1:

[0025] like Figure 1The illustrated miniature Mesh wireless self-organizing network communication device with built-in battery includes a wired charging management module 1, a lithium battery module 2, a battery power management module 3, an MCU signal processing module 4, a charging coil 5, a narrowband self-organizing network communication module 6, a miniature broadband self-organizing network communication module 7, and a cooling fan 8.

[0026] The structure of a miniature mesh wireless self-organizing network communication device with a built-in battery is as follows: Figure 2 As shown, inside the housing, from bottom to top, are arranged a lithium battery module 2, a narrowband self-organizing network communication module 6, a circuit board integrating an MCU signal processing module 4, a battery power management module 3, a wireless charging management module 1, and a micro broadband self-organizing network communication module 7. Because the micro broadband self-organizing network communication module 7 generates significant heat during operation, a cooling fan 8 is located on the outer top surface of the housing, close to the micro broadband self-organizing network communication module 7. The cooling fan 8 is an IP68 waterproof fan, ensuring heat dissipation while adapting to humid and water-dripping environments. The charging coil 5 is positioned close to the inner side of the housing for wireless charging.

[0027] The wireless charging management module 1 provides charging for the device's built-in battery. The device uses a wireless charging coil 5 for charging, which helps to prevent dust and water damage and improve the device's protection level. The power supply management module 3 boosts the battery voltage to 4.2V with a constant current of 3A, providing power to the micro broadband self-organizing network communication module 7 and the cooling fan 8. Simultaneously, it uses a voltage conversion circuit to convert the 4.2V to 3.3V, providing power to the MCU signal processing module 4 and the narrowband self-organizing network communication module 6. The MCU signal processing module 4 is connected to the narrowband self-organizing network communication module 6, the micro broadband self-organizing network communication module 7, and the cooling fan 8 via URAT / PWM. The MCU signal processing module 4 receives control commands from the narrowband self-organizing network communication module 6. When it receives a sleep control command from the robot control terminal, the MCU signal processing module 4 outputs a control signal to power off the micro broadband self-organizing network communication module, putting it into sleep mode. When it receives a work control command from the onboard control terminal, it powers on the micro broadband self-organizing network communication module, putting it in a wake-up state, enabling information exchange between the robot and the micro broadband self-organizing network communication module via a broadband network link. Meanwhile, the MCU signal processing module 4 receives the operating data from the miniature broadband ad hoc network communication module 7 and transmits the operating data back to the control console via the narrowband ad hoc network communication module 6. Both the miniature broadband ad hoc network communication module 7 and the narrowband ad hoc network communication module 6 are connected to flexible antennas to ensure communication gain for signal transmission.

[0028] The specific circuit structure of the miniature mesh wireless self-organizing network communication device with built-in battery is as follows: Figures 3-8 As shown.

[0029] The circuit of wireless charging management module 1 is as follows: Figure 3As shown, the wireless charging management module 1 is used to realize wireless energy reception and conversion, battery charging management and protection, and charging status indication.

[0030] The left-side wireless receiver circuit uses the NU1680-QFN16 chip U2 as its core to achieve wireless power reception. L1 is a 30mm receiving coil responsible for capturing the electromagnetic field energy from the transmitter. C1-C6 filter capacitors form a tuning network, which, together with the coil, constitutes a resonant circuit to optimize power reception efficiency. The VRECT terminal uses internal rectification to convert the received AC signal into DC voltage. C7 and C8 serve as output filter capacitors to stabilize the rectified voltage. C9-C11 form the input filter network at the VIN terminal to eliminate power supply ripple.

[0031] The circuit on the right uses the TP4056 chip U3 as the charging control chip for the lithium battery module. Pin 4 (VCC) of the TP4056 chip U3 is the power input (VIN), which is connected to pin 14 of the NU1680 chip U2. Pin 2 (PROG) controls the charging current via resistor R11. Pin 3 (GND) and pin 5 (BAT) are connected to lithium battery module 2, providing a stable charging output. Pin 6 (STBDY) and pin 7 (CHRG) are connected to LED indicators; a red LED indicates the charging status, and a green LED indicates the end of charging. Current is limited by resistor R10. C13 acts as a filter capacitor to ensure stable operation of the charging management chip.

[0032] The circuit of battery power management module 3 is as follows: Figure 4 As shown, the battery voltage is boosted to a stable 4.2V output to power some modules, and then the 4.2V voltage is further stepped down to a 3.3V output to power some modules.

[0033] The circuit on the left uses a TPS61088 DC-DC converter with an input voltage range of 1.8V-6.0V to boost the battery voltage to 4.2V. L2 is an inductor serving as the energy storage element for the boost circuit. R9 is a feedback resistor involved in setting the output voltage. C14, C15, and C20 are input filter capacitors to ensure input voltage stability. C16 is a bypass capacitor for the BOOT pin to assist the internal switch operation. C21 is a capacitor for the SS (soft start) pin to control the chip's startup rate. The EN pin is connected to the control signal to enable the chip. Pins 3-7 (SW) are connected as the power switch output to the inductor. R4-R8 form a feedback network to control the output voltage. C17 and C18 are compensation capacitors to ensure system stability. C19, C22, and C23 are output filter capacitors to smooth the output voltage. The ILIM and COMP pins are used for current limiting and compensation control, and the MODE pin is used to set the chip's operating mode. The stable 4.2V output voltage powers the miniature broadband self-organizing network communication module 7 and the cooling fan 8.

[0034] The circuit on the right side uses an ultra-low noise, high power supply rejection ratio low dropout linear regulator, the LP5907MFX, designed specifically for noise-sensitive circuits. It implements a 4.2V-3.3V voltage conversion circuit to provide a stable voltage output for the MCU signal processing module 4 and the narrowband self-organizing network communication module 6.

[0035] The circuit diagram of MCU signal processing module 4 is as follows: Figure 5 As shown. The MCU signal processing module 4 adopts an ultra-high-speed 32-bit 8051 core 1T, with a built-in low-dropout linear regulator, 128KB FLASH program memory, supports ordinary serial port download, two high-speed synchronous / asynchronous serial ports: serial port 1 USART1, serial port 2 USART2, and two high-speed asynchronous serial ports: serial port 3, serial port 4. The MCU signal processing module 4 includes an STC32G12K128 microcontroller. The I / O interfaces of pins 1 and 2 of the MCU signal processing module 4 are connected to pins 4 and 6 of the OK-14-GM016 micro broadband self-organizing network communication module, and the I / O interfaces of pins 29 and 30 of the MCU signal processing module 4 are connected to pins 5 and 6 of the 255MNL01 narrowband self-organizing network communication module chip, realizing multi-functional collaborative operation.

[0036] When the EN port of the TPS61088 boost controller in battery power management module 3 is high, the circuit outputs 4.2V, and MCU signal processing module 4 enters standby mode. MCU signal processing module 4 maintains the TPS61088 EN port high via P3.4 I / O port, keeping the device in standby mode when there is no wireless charging output. MCU signal processing module 4 receives control commands from narrowband self-organizing network communication module 6 to enable / disable micro broadband self-organizing network communication module 7, enabling sleep and wake-up control of micro broadband self-organizing network communication module 7. MCU signal processing module 4 receives serial port data from micro broadband self-organizing network communication module 7 and sends it back to the control console. Furthermore, MCU signal processing module 4 uses PWM pulse width modulation signals to control the fan speed control circuit, controlling the start of the cooling fan.

[0037] Narrowband self-organizing network communication module 6 Figure 6 As shown. The narrowband self-organizing network communication module 6 uses the 255MNL01 chip with self-routing and self-recovery functions. P1.5CFG is connected to pin 18. The module is powered by 3.3V and is equipped with C33 and C34 filter capacitors to ensure stable chip operating voltage. Pin 14 (ANT) is connected to an external flexible antenna. It utilizes LoRa modulation and the Mesh self-organizing network protocol to solve the coverage networking requirements of small data in complex environments, realizes the low-power standby power-on and power-off of the device, and enables the micro broadband self-organizing network communication module to be turned on and off via AT commands, as well as the function of debugging data transmission.

[0038] The interface circuit of the micro broadband self-organizing network communication module 4 is as follows: Figure 7 As shown. The miniature broadband self-organizing network communication module 7 uses the CX677XK chip based on the LTE wireless communication standard, supporting OFDM and MIMO technologies, and supporting broadband mesh self-organizing network communication with various bandwidth allocations of 10MHz and 20MHz. Pins 4 and 6 of the OK-14-GM016 chip are serial communication interfaces used for communication with the UART of the MCU signal processing module. The interface circuit on the left side uses a BC847BW transistor and R23 to form a driver circuit to control the switching state of the MOSFET. R22 acts as a pull-up resistor to ensure that the MOSFET is in the off state by default. The MOSFET switch controls the power supply of the miniature broadband self-organizing network communication module 7.

[0039] The circuit of the cooling fan is as follows Figure 8 As shown, by changing the duty cycle of the PWM pulse width modulation signal output from pin 24 (P2.3) of the MCU, the analog voltage signal generated by the fan using digital signals can be obtained.

Claims

1. A miniature mesh wireless self-organizing network communication device with a built-in battery, comprising a housing, characterized in that, The outer shell is equipped with a cooling fan (8), and the inner shell is equipped with a wireless charging management module (1), a lithium battery module (2), a battery power management module (3), an MCU signal processing module (4), a charging coil (5), a narrowband self-organizing network communication module (6), and a micro broadband self-organizing network communication module (7). The MCU signal processing module (4) is connected to the narrowband self-organizing network communication module (6), the micro broadband self-organizing network communication module (7) and the cooling fan (8). One of the signal output terminals of the MCU signal processing module (4) outputs a control signal to control the opening and closing of the micro broadband self-organizing network communication module (7).

2. The miniature mesh wireless self-organizing network communication device with a built-in battery according to claim 1, characterized in that: The micro broadband self-organizing network communication module (7) is located near the cooling fan (8), and the charging coil (5) is attached to the inner wall of the housing.

3. The miniature mesh wireless self-organizing network communication device with a built-in battery according to claim 1, characterized in that: The power output terminal of the charging coil (5) is connected in sequence to the wireless charging management module (1), the lithium battery module (2) and the battery power management module (3). The power output terminal of the battery power management module (3) is connected to the MCU signal processing module (4), the narrowband self-organizing network communication module (6), the micro broadband self-organizing network communication module (7) and the cooling fan (8).

4. A miniature mesh wireless self-organizing network communication device with a built-in battery according to claim 3, characterized in that: The signal input terminal of the MCU signal processing module (4) is connected to the operation data signal output terminal of the narrowband self-organizing network communication module (6) and the micro broadband self-organizing network communication module (7). The signal output terminal of the MCU signal processing module (4) is connected to the narrowband self-organizing network communication module (6), and the operation data is transmitted back to the console through the narrowband self-organizing network communication module (6).

5. A miniature mesh wireless self-organizing network communication device with a built-in battery according to claim 1, characterized in that: The wireless charging management module (1) includes chip U2 and chip U3. Chip U2 is NU1680-QFN16 and chip U3 is TP4056.

6. A miniature mesh wireless self-organizing network communication device with a built-in battery according to claim 1, characterized in that: The MCU signal processing module (4) includes an STC32G12K128 microcontroller. The I / O interfaces of pins 1 and 2 of the STC32G12K128 microcontroller are connected to pins 4 and 6 of the OK-14-GM016 of the micro broadband self-organizing network communication module (7). The I / O interfaces of pins 29 and 30 of the MCU signal processing module are connected to pins 5 and 6 of the 255MNL01 model chip of the narrowband self-organizing network communication module.

7. A miniature mesh wireless self-organizing network communication device with a built-in battery according to claim 6, characterized in that: The narrowband self-organizing network communication module (6) has its 255MNL01 chip pin 14 connected to an external flexible antenna. Through LoRa modulation and Mesh self-organizing network protocol, it can perform small data coverage networking in complex environments. It can also turn the micro broadband self-organizing network communication module (7) on and off via AT commands, as well as debug data transmission functions.

8. A miniature mesh wireless self-organizing network communication device with a built-in battery according to claim 6, characterized in that: Pins 4 and 6 of the OK-14-GM016 chip in the micro broadband self-organizing network communication module (7) are serial communication interfaces used to communicate with the UART of the MCU signal processing module (4); the micro broadband self-organizing network communication module (7) includes a BC847BW transistor, which, together with R23, forms a driving circuit to control the switching state of the MOSFET. The MOSFET switch controls the power supply of the micro broadband self-organizing network communication module (7).

9. A miniature mesh wireless self-organizing network communication device with a built-in battery according to claim 1, characterized in that: The cooling fan is an IP68 waterproof fan.

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