Data wireless gateway based on LORA communication

Abstract

The utility model discloses a data wireless gateway based on LORA communication, and relates to the field of heat supply and Internet of Things. In order to solve the problem that in the prior art, a large number of LORA data transmission units need to be added and on-site electricity taking needs to be carried out, the following scheme is provided: the gateway comprises a control panel, a shell and an antenna. The control panel is arranged in the shell, the antenna connected through threads is located outside the shell, and the control panel and the antenna are connected through an antenna patch cord. The control panel comprises a main control unit, a lithium battery pack, a power supply control unit, a storage unit, a clock unit, a 470M wireless communication unit and an SD card driving unit. The main control unit is responsible for energy management and data exchange, and realizes time synchronization through the clock unit. The 470M wireless communication unit interacts with the valve, and configuration parameters are read or written in through the SD card driving unit. According to the utility model, a more reliable scheme is provided for data transmission based on LORA communication.

Description

Technical Field

[0001] The utility model relates to the fields of heating and the Internet of Things, and in particular to a data wireless gateway based on LORA communication. Background Art

[0002] The common LoRa communication on the market is a point-to-point communication method. There will be one host and multiple terminal devices in a network, and the maximum wireless transmission power of LoRa is 20DB. The floor penetration and communication distance are limited. When the on-site LoRa data transmission unit is far away from the terminal device, or there are many obstacles in the middle, the data transmission unit will not be able to collect data from the terminal device. Moreover, the device that cannot communicate wirelessly is often the end terminal device. At present, in order to solve this problem, multiple LoRa data transmission units are often installed in a LoRa network, which increases the project cost and brings great difficulties to on-site construction, because the LoRa data sensor unit requires external mains power supply, and it is very difficult to obtain power on site. Utility Model Content

[0003] In order to solve the problem that the existing technology needs to add a large number of LORA data transmission units and on-site power supply, the utility model provides the following solution: a data wireless gateway based on LORA communication, the gateway includes: a control board, a housing and an antenna;

[0004] The control board is fixed inside the housing, and the antenna is fixed outside the housing, and is connected by threads. The control board uses an antenna adapter cable to transmit signals to the antenna;

[0005] The control panel includes: a main control unit, a lithium battery pack, a power control unit, a storage unit, a clock unit, a 470M wireless communication unit and an SD card drive unit;

[0006] The main control unit is used to receive power from the lithium battery pack through the power control unit and manage the distribution of power;

[0007] The main control unit is used to exchange data with the storage unit;

[0008] The main control unit is used to implement time scheduling and synchronization through the clock unit;

[0009] The main control unit is used to realize data interaction with the valve through the 470M wireless communication unit, send a wake-up code and receive data sent back by the valve;

[0010] The main control unit is further used to read or write configuration parameters in the SD card through the SD card drive unit to achieve management and update of the gateway configuration.

[0011] Furthermore, the lithium battery pack adopts a 3-in-series and 4-in-parallel mode, the power supply reaches 14V, and the capacity reaches 19AH.

[0012] Furthermore, the storage unit is a FM25V05 ferroelectric memory.

[0013] Furthermore, the SD card drive unit adopts a CH376S chip.

[0014] Furthermore, the main control unit is a STM32L151 microprocessor.

[0015] Furthermore, the 470M wireless communication unit adopts WB-257C.

[0016] Furthermore, the clock unit adopts PC8563T chip.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The present invention provides a data wireless gateway based on LoRa communication, which acts as a LoRa communication relay. During on-site construction, the gateway can be installed near the terminal device to realize communication data forwarding between the LoRa data transmission unit and the terminal device.

[0019] (2) The utility model adopts battery power supply, so there is no need to bother to find a power source.

[0020] (3) The present invention uses a 470M wireless communication unit that integrates wireless anti-collision and frequency modulation algorithms. The frequency modulation range can be flexibly set to SF7 to SF12. When the LoRa gateway does not detect wireless data, it will automatically enter a dormant state. Therefore, the present invention can simultaneously ensure wireless data forwarding operations for up to 20 terminal devices.

[0021] (4) The utility model also has an intelligent configuration function, which can forward only the terminal device data that needs to be relayed according to the settings, and automatically block the device data that does not need to be forwarded. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a system topology diagram of the control panel of the utility model;

[0023] Figure 2 This is a structural diagram of the shell of the utility model;

[0024] Figure 3 This is a circuit diagram of a clock unit of the present utility model;

[0025] Figure 4 This is the structure diagram of the LORA communication system. DETAILED DESCRIPTION

[0026] Example 1, combined Figure 1-Figure 3 This embodiment describes a data wireless gateway based on LORA communication, the gateway comprising: a control board, a housing and an antenna;

[0027] The control board is fixed inside the housing, and the antenna is fixed outside the housing, and is connected by threads. The control board uses an antenna adapter cable to transmit signals to the antenna;

[0028] The control panel includes: a main control unit, a lithium battery pack, a power control unit, a storage unit, a clock unit, a 470M wireless communication unit and an SD card drive unit;

[0029] The main control unit is used to receive power from the lithium battery pack through the power control unit and manage the distribution of power;

[0030] The main control unit is used to exchange data with the storage unit;

[0031] The main control unit is used to implement time scheduling and synchronization through the clock unit;

[0032] The main control unit is used to realize data interaction with the valve through the 470M wireless communication unit, send a wake-up code and receive data sent back by the valve;

[0033] The main control unit is further used to read or write configuration parameters in the SD card through the SD card drive unit to achieve management and update of the gateway configuration.

[0034] Specific, combined Figure 1 It can be seen that in the control panel, the main control unit serves as the core controller and realizes intelligent configuration functions through interaction with various modules. It manages multiple tasks such as power distribution, data exchange, time scheduling and wireless communication, uses the storage unit to store configuration information, the clock unit to achieve time synchronization, the 470M wireless communication unit to exchange data with the valve, and manages the gateway configuration through the SD card driver unit. The main control unit judges and forwards the terminal device data that needs to be relayed according to the set rules, and at the same time blocks the data that does not need to be forwarded, thereby improving the intelligence and efficiency of the system. Combined with Figure 2 It can be seen that the specific structure of the shell in the present utility model.

[0035] The lithium battery pack adopts a 3-in-1 4-in-1 parallel mode, with a power supply of 14V and a capacity of 19AH.

[0036] Specifically, due to the use of disposable lithium batteries, when the terminal device moves, the corresponding gateway can also change its location without considering wiring and power supply issues, thereby reducing future maintenance costs.

[0037] The storage unit is an FM25V05 ferroelectric memory.

[0038] Specifically, the FM25V05 ferroelectric memory is a non-volatile memory chip with a write / erase life of 1 million times. It stores data such as the wireless IDs that the gateway device needs to forward, the gateway's wake-up cycle, and parameters such as the heating season. This storage unit ensures that the gateway can automatically resume operation in its pre-power-down state after a power outage and subsequent power-up.

[0039] The SD card drive unit adopts the CH376S chip.

[0040] Specifically, the SD card drive unit realizes the function of quickly importing configuration parameter data.

[0041] The main control unit is a STM32L151 microprocessor.

[0042] Specifically, the use of the STM32L151 high-performance microprocessor can provide the utility model with high performance, low power consumption, and strong anti-interference characteristics, thereby ensuring the long-term stable operation of the utility model.

[0043] The 470M wireless communication unit adopts WB-257C.

[0044] Specifically, the 470M wireless communication unit uses the Lora technology 470MHZ wireless fixed-point communication mode, which requires a specified address and channel to interact with the valve. Before each communication, the wireless communication unit will send a wake-up code of a fixed duration to wake up the valve for interaction.

[0045] The 470M wireless communication unit effectively improves the success rate of LORA network communication and reduces the number of LORA data transmission units. At the same time, it greatly reduces the difficulty of on-site valve networking communication. There is no need to worry about wireless communication failures between on-site valves and data transmission units, and the valve position can be installed at will. At the same time, the 470M wireless communication unit has a wireless frequency modulation function. When the current channel is occupied, it will automatically switch to other channels and forward the received data. Finally, the 470M wireless communication unit is integrated with a wireless anti-collision algorithm. The wireless anti-collision algorithm is an existing technology. It automatically detects wireless signals in the air before wireless communication. When active wireless communication is detected, the gateway device will automatically wait for a random delay before sending data again.

[0046] The clock unit adopts PC8563T chip.

[0047] Specifically, through Figure 3The specific circuit diagram of the clock unit can be seen. Through the clock unit, the utility model automatically enters sleep mode during the non-heating season and does not forward wireless data. The device can be in standby mode for more than 5 years.

[0048] Example 2, combined with Figure 4 To explain this embodiment, Figure 4 The LoRa communication system shown includes a monitoring system, a data transmission unit and a LoRa gateway; the monitoring system is connected to several parallel data transmission units through the NB-IOT network; the data transmission unit is connected to several terminal devices or LoRa gateways through LoRa wireless; and the data wireless gateway based on LoRa communication described in the utility model is used to relay data of several valves at the end.

Claims

1. A data wireless gateway based on LORA communication, characterized in that: The gateway includes: a control panel, a housing and an antenna; The control board is fixed inside the housing, and the antenna is fixed outside the housing, and is connected by threads. The control board uses an antenna adapter cable to transmit signals to the antenna; The control panel includes: a main control unit, a lithium battery pack, a power control unit, a storage unit, a clock unit, a 470M wireless communication unit and an SD card drive unit; The main control unit is used to receive power from the lithium battery pack through the power control unit and manage the distribution of power; The main control unit is used to exchange data with the storage unit; The main control unit is used to implement time scheduling and synchronization through the clock unit; The main control unit is used to realize data interaction with the valve through the 470M wireless communication unit, send a wake-up code and receive data sent back by the valve; The main control unit is further used to read or write configuration parameters in the SD card through the SD card drive unit to achieve management and update of the gateway configuration.

2. A data wireless gateway based on LORA communication according to claim 1, characterized in that: The lithium battery pack adopts a 3-in-1 4-in-1 parallel mode, with a power supply of 14V and a capacity of 19AH.

3. A data wireless gateway based on LORA communication according to claim 1, characterized in that: The storage unit is an FM25V05 ferroelectric memory.

4. A data wireless gateway based on LORA communication according to claim 1, characterized in that: The SD card drive unit adopts the CH376S chip.

5. A data wireless gateway based on LORA communication according to claim 1, characterized in that: The main control unit is a STM32L151 microprocessor.

6. A data wireless gateway based on LORA communication according to claim 1, characterized in that: The 470M wireless communication unit adopts WB-257C.

7. A data wireless gateway based on LORA communication according to claim 1, characterized in that: The clock unit adopts PC8563T chip.

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