CN216751798U - Low-power-consumption wide area internet of things gateway - Google Patents
Low-power-consumption wide area internet of things gateway Download PDFInfo
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- CN216751798U CN216751798U CN202221158861.9U CN202221158861U CN216751798U CN 216751798 U CN216751798 U CN 216751798U CN 202221158861 U CN202221158861 U CN 202221158861U CN 216751798 U CN216751798 U CN 216751798U
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Abstract
Low-power consumption wide area thing networking gateway relates to thing networking communication technical field, including SPI interface module, digital baseband chip module, first radio frequency transmission module, second radio frequency transmission module and SPDT circuit, SPI interface module is connected with digital baseband chip module communication electricity, first radio frequency transmission module, second radio frequency transmission module are connected with digital baseband chip module communication electricity respectively, the SPDT circuit is connected with first radio frequency transmission module and second radio frequency transmission module communication electricity respectively. And the power supply module is electrically connected with the digital baseband chip module. The utility model has reasonable structural design and high integration level, adopts the design of a radio frequency transmitting circuit with two parallel paths, and designs a corresponding SPDT circuit in a matching way, thereby greatly improving the transmitting reliability of the gateway of the Internet of things, reducing the power consumption of equipment, being more convenient and faster in product development and use, and having good market popularization and application values.
Description
Technical Field
The application relates to the technical field of communication of the Internet of things, in particular to a low-power-consumption wide-area Internet of things gateway.
Background
The internet of things gateway, as a new term, will play a very important role in the future era of internet of things, and will become a link connecting a sensing network and a traditional communication network. As gateway equipment, the gateway of the Internet of things can realize protocol conversion between the sensing network and the communication network and between different types of sensing networks, thereby realizing wide area interconnection and local area interconnection. In addition, the internet of things gateway also needs to have an equipment management function, and an operator can manage all sensing nodes at the bottom layer through the internet of things gateway equipment, know relevant information of all the sensing nodes and realize remote control.
The functions of the gateway of the wide area internet of things mainly comprise three steps:
1. protocol conversion capability. And converting protocols from different sensing networks to an access network, uniformly packaging the next data in a standard format, ensuring that the protocols of the different sensing networks become uniform data and signaling, analyzing the last sent data packet into a sensing layer protocol, and changing the protocols of the different sensing networks into uniform data and signaling.
2. The capabilities may be managed. Firstly, the gateway is managed, such as registration management, authority management, status supervision and the like. The gateway implements management of the nodes in the sub-network, such as obtaining identification, status, attributes, energy, etc. of the nodes. And remote wake-up, control, diagnostics, upgrades and maintenance. Due to the different technical standards and the complexity of the protocols of the subnetworks, the management capabilities of the gateways vary.
3. Wide access capability.
At present, short-range communication technology standards are many, and internet of things gateway standardization work such as 3GPP and sensor working group is being carried out at home and abroad at present to realize interconnection of various communication technology standards. Two factors that should be considered in the design of the internet of things gateway:
1. data security, which is a key factor for determining success or failure of the large-scale internet of things. Data security becomes more important as networks become an important component of more applications. The safety problem is to be solved in each design stage, and it is wrong to add safety function after the design task is completed.
2. Maintainability no system is perfect. No matter how many tests are performed before deployment, safety defects, hidden dangers and bugs can be found after deployment. The internet of things gateways and nodes must support field maintenance and update functions. The equipment maintenance is not only based on remote maintenance, but also more networking modes are available for selection. The design of the gateway of the internet of things is only a part of the technology of the internet of things. Aiming at the customization of the Internet of things intelligent solution and different requirements of different industries, a cooperation brand with a leading technology is suggested to be selected.
3. The power consumption requirement is low:
at present, because a single-channel radio frequency circuit is generally adopted to send data, the existing wide area internet of things gateway is low in reliability, does not support a full-duplex mode, does not have onboard mcus, cannot be programmed, cannot be actively controlled, and is very high in power consumption of the whole gateway.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems that the existing wide area internet of things gateway generally adopts a single-path radio frequency circuit to send data, is low in reliability, does not support a full-duplex mode, does not have onboard mcus, cannot be programmed, cannot be actively controlled and is very high in power consumption of the whole gateway, the application provides the low-power-consumption wide area internet of things gateway. The following technical scheme is adopted:
low-power consumption wide area thing networking gateway, including SPI interface module, digital baseband chip module, first radio frequency transmission module, second radio frequency transmission module and SPDT circuit, SPI interface module is connected with digital baseband chip module communication electricity, first radio frequency transmission module, second radio frequency transmission module are connected with digital baseband chip module communication electricity respectively, SPDT circuit is connected with first radio frequency transmission module and second radio frequency transmission module communication electricity respectively.
Through the technical scheme, the gateway designs the first radio frequency transmission module and the second radio frequency transmission module of the two radio frequency transmission modules, and carries out two-way control through the SPDT circuit, so that the reliability of the gateway is greatly increased while the power consumption is not increased, the whole power consumption of the Internet of things gateway is greatly reduced by using the digital baseband chip module, and the operational reliability of the Internet of things gateway is improved.
Optionally, the digital baseband chip module is electrically connected to the power module.
Through above-mentioned technical scheme, power module is whole thing networking gateway power supply, and is more stable.
Optionally, the power module is a DC-DC voltage reduction circuit.
Through the technical scheme, the internet of things gateway needs to use 3.3V direct current for power supply, the instantaneous peak current can reach 400mA to the maximum extent in the TX mode, the used DC-DC voltage reduction circuit needs to be capable of providing enough current for preventing voltage drop, and a tantalum capacitor or an electrolytic capacitor with a large capacitance value needs to be added at the port of the DC-DC voltage reduction circuit. If the switch power supply is used for supplying power to the module, the circuit wiring should avoid the antenna part as much as possible to prevent EMC interference.
Optionally, an I-PEX antenna interface is further provided, and the I-PEX antenna interface is in communication and electrical connection with the SPDT circuit.
By adopting the technical scheme and the I-PEX antenna interface, the directivity of a signal object is good, the function is high, the disturbance resistance intelligence is strong, the disturbance on the mainboard can be kept away, and moreover, the terminal manufacturer does not need to debug the vertical chamber excessively, and only needs to connect one I-PEX antenna on the surface.
Optionally, the device further comprises a pin assembly, and the pin assembly is in communication and electrical connection with the SPI interface module.
Through the technical scheme, the interface butt joint of the application scene is realized through the packaged pin assembly, the design is more convenient, the wiring is more convenient to use, the risk of wiring errors is reduced, and the energy consumption of the interface is also greatly reduced.
Optionally, the SPI interface module includes an SPI clock signal input interface, an SPI data output interface, an SPI data input interface and an SPI chip select signal input interface, and the SPI clock signal input interface, the SPI data output interface, the SPI data input interface and the SPI chip select signal input interface are respectively electrically connected with the digital baseband chip module.
Through above-mentioned technical scheme, adopt SPI digital interface, support full duplex operation, the operation wiring is more convenient, greatly increased data transmission rate.
Optionally, the digital baseband chip module is an SX1302LoRa digital baseband chip.
Through the technical scheme, the SX1302LoRa digital baseband chip greatly reduces current consumption, simplifies the heat dissipation design of the gateway, and can process more flows compared with the prior devices.
Optionally, the first rf transmitting module and the second rf transmitting module are SX1250 rf transmitting chips.
Through the technical scheme, the SX1250 radio frequency transmitting chip supports a half-duplex working mode, can run with low power consumption, can process a constant envelope modulation mode, such as LoRa or FSK, and provides a built-in differential Low Noise Amplifier (LNA) in an ISM frequency band of 150 + 960 MHz. Control is via a serial SPI interface and a set of general purpose input/outputs (DIOs).
Optionally, the SPDT circuit is a single-pole double-throw switch circuit, and the SPDT circuit controls the operating states of the first radio frequency transmission module and the second radio frequency transmission module respectively.
Through the technical scheme, the SPDT circuit can control the power supply to output in two different directions, namely can be used for controlling two devices, or can also control the same device to switch the operation direction. The single-pole double-throw switch is used in a circuit diagram as follows: one switch can be dialed to two sides to achieve double control. The power consumption is not increased, the work of two paths of radio frequency transmitting circuits is met, and the reliability of the gateway of the Internet of things is greatly improved.
In summary, the present application includes at least one of the following beneficial technical effects:
the utility model can provide the low-power-consumption wide-area Internet of things gateway, has reasonable structural design and high integration level, adopts the design of a double-path parallel radio frequency transmitting circuit and designs a corresponding SPDT circuit in a matching way, greatly improves the transmitting reliability of the Internet of things gateway, reduces the power consumption of equipment, is more convenient and faster to develop and use products and has good market popularization and application values.
Drawings
FIG. 1 is a schematic electrical schematic of the present invention;
FIG. 2 is a schematic diagram of the SPI interface module of the present invention;
FIG. 3 is a schematic diagram of the electrical principle of the DC-DC circuit of the present invention;
description of reference numerals: 1. an SPI interface module; 11. an SPI clock signal input interface; 12. an SPI data output interface; 13. an SPI data input interface; 14. an SPI chip selection signal input interface; 2. a power supply module; 3. a digital baseband chip module; 4. a first radio frequency transmission module; 5. a second radio frequency transmission module; 6. an SPDT circuit; 7. I-PEX antenna interface; 8. and a pin component.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses low-power consumption wide area thing networking gateway.
Referring to fig. 1-3, low-power consumption wide area thing networking gateway, including SPI interface module 1, digital baseband chip module 3, first radio frequency transmission module 4, second radio frequency transmission module 5 and SPDT circuit 6, SPI interface module 1 is connected with digital baseband chip module 3 communication electricity, first radio frequency transmission module 4, second radio frequency transmission module 5 are connected with digital baseband chip module 3 communication electricity respectively, SPDT circuit 6 is connected with first radio frequency transmission module 4 and second radio frequency transmission module 5 communication electricity respectively.
The gateway designs the first radio frequency transmission module 4 and the second radio frequency transmission module 5 of two ways of radio frequency transmission modules to carry out two ways of control through SPDT circuit 6, when not increasing the consumption, greatly increased the reliability of gateway, digital baseband chip module 3's use will have greatly reduced the whole consumption of thing networking gateway, and improved thing networking gateway operational reliability.
And the power module 2 is electrically connected with the digital baseband chip module 3.
The power module 2 supplies power for the whole internet of things gateway, and is more stable.
The power module 2 is a DC-DC voltage step-down circuit.
The internet of things gateway needs to use 3.3V direct current for power supply, the peak current in the twinkling of an eye can reach 400mA to the maximum extent under the TX mode, in order to prevent voltage drop, the used DC-DC voltage reduction circuit needs to be capable of providing enough current, and a tantalum capacitor or an electrolytic capacitor with a large capacitance value needs to be added at the port of the DC-DC voltage reduction circuit. If the switch power supply is used for supplying power to the module, the circuit wiring should avoid the antenna part as much as possible to prevent EMC interference.
There is also an I-PEX antenna interface 7, the I-PEX antenna interface 7 being in communicative electrical connection with the SPDT circuit 6.
By adopting the I-PEX antenna interface 7, the directivity of a signal object is good, the function is high, the anti-disturbance intelligence is strong, the disturbance on the mainboard can be kept away, and moreover, the debugging of a vertical room and the behavior of a terminal manufacturer are not required to be carried out too much, and only one I-PEX antenna is required to be connected to the surface of the terminal manufacturer.
And a pin assembly 8, wherein the pin assembly 8 is in communication and electric connection with the SPI interface module 1.
The interface butt joint of the application scene is realized through the packaged pin assembly 8, the design is more convenient, the wiring is more convenient, the risk of wiring errors is reduced, and the energy consumption of the interface is also greatly reduced.
The SPI interface module 1 includes an SPI clock signal input interface 11, an SPI data output interface 12, an SPI data input interface 13 and an SPI chip selection signal input interface 14, and the SPI clock signal input interface 11, the SPI data output interface 12, the SPI data input interface 13 and the SPI chip selection signal input interface 14 are respectively electrically connected with the digital baseband chip module 3 in communication.
The SPI digital interface is adopted, full-duplex operation is supported, operation wiring is more convenient, and data transmission rate is greatly increased.
The digital baseband chip module 3 is an SX1302LoRa digital baseband chip.
The SX1302LoRa digital baseband chip greatly reduces current consumption, simplifies the heat dissipation design of the gateway, and can process more flow compared with the prior device.
The first rf transmitting module 4 and the second rf transmitting module 5 are SX1250 rf transmitting chips.
The SX1250 radio frequency transmitting chip supports a half-duplex working mode, can run with low power consumption, can process a constant envelope modulation mode such as LoRa or FSK and provide a built-in differential Low Noise Amplifier (LNA) in an ISM frequency band of 150 and 960 MHz. Control is via a serial SPI interface and a set of general purpose input/outputs (DIOs).
The SPDT circuit 6 is a single-pole double-throw switch circuit, and the SPDT circuit 6 controls the operating states of the first rf transmitting module 4 and the second rf transmitting module 5, respectively.
The SPDT circuit 6 can control the power source to output in two different directions, that is, can be used to control two devices, or can control the same device to switch the operation direction. The single-pole double-throw switch is used in a circuit diagram as follows: one switch can be dialed to two sides to achieve double control. The power consumption is not increased, the work of two paths of radio frequency transmitting circuits is met, and the reliability of the gateway of the Internet of things is greatly improved.
The implementation principle of the low-power-consumption wide-area internet of things gateway in the embodiment of the application is as follows:
under a specific application scene of the internet of things gateway, firstly connecting the power input of the pin component 8 with a power interface under the application scene, and simultaneously butting a data source interface;
when data needs to be sent: after the received data is processed by the SX1302LoRa digital baseband chip,
the SX1250 radio frequency transmitting chips of the single-channel first radio frequency transmitting module 4 and the single-channel second radio frequency transmitting module 5 can be selected to transmit, and at the moment, the SPDT circuit 6 controls one of the radio frequency transmitting module 4 and the single-channel second radio frequency transmitting module 5 to transmit, so that the power consumption is lower.
When the important level of data to be sent is high, double-path simultaneous sending can be realized, and at the moment, the SPDT circuit 6 controls the double-path connection of the radio frequency transmitting module 4 and the second radio frequency transmitting module 5, so that the reliability of data sending is greatly improved.
Then the signals are processed by a LoRa1268 module 18 and a UART serial port 17 in sequence, and finally the signals are transmitted to the antenna through a radio frequency antenna 3
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. Low-power consumption wide area thing networking gateway, its characterized in that: including SPI interface module (1), digital baseband chip module (3), power module (2), first radio frequency transmission module (4), second radio frequency transmission module (5) and SPDT circuit (6), SPI interface module (1) is connected with digital baseband chip module (3) communication electricity, power module (2) is connected with digital baseband chip module (3) electricity, first radio frequency transmission module (4), second radio frequency transmission module (5) are connected with digital baseband chip module (3) communication electricity respectively, SPDT circuit (6) are connected with first radio frequency transmission module (4) and second radio frequency transmission module (5) communication electricity respectively.
2. The low-power wide area internet of things gateway of claim 1, wherein: the power module (2) is a DC-DC voltage reduction circuit.
3. The low-power wide area internet of things gateway of claim 1, wherein: there is also an I-PEX antenna interface (7), the I-PEX antenna interface (7) being in communicative electrical connection with the SPDT circuit (6).
4. The low-power wide area internet of things gateway of claim 1, wherein: and the pin component (8) is also connected with the SPI interface module (1) in a communication and electric mode.
5. The low-power wide area internet of things gateway of claim 1, wherein: SPI interface module (1) includes SPI clock signal input interface (11), SPI data output interface (12), SPI data input interface (13) and SPI chip selection signal input interface (14), SPI clock signal input interface (11), SPI data output interface (12), SPI data input interface (13) and SPI chip selection signal input interface (14) are connected with digital baseband chip module (3) communication electricity respectively.
6. The low-power wide area internet of things gateway of claim 1, wherein: the digital baseband chip module (3) is an SX1302LoRa digital baseband chip.
7. The low-power wide area internet of things gateway of claim 1, wherein: the first radio frequency transmitting module (4) and the second radio frequency transmitting module (5) are SX1250 radio frequency transmitting chips.
8. The low-power wide area internet of things gateway of claim 1, wherein: the SPDT circuit (6) is a single-pole double-throw switch circuit, and the SPDT circuit (6) respectively controls the working states of the first radio frequency transmitting module (4) and the second radio frequency transmitting module (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221158861.9U CN216751798U (en) | 2022-05-16 | 2022-05-16 | Low-power-consumption wide area internet of things gateway |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221158861.9U CN216751798U (en) | 2022-05-16 | 2022-05-16 | Low-power-consumption wide area internet of things gateway |
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| CN216751798U true CN216751798U (en) | 2022-06-14 |
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| CN202221158861.9U Active CN216751798U (en) | 2022-05-16 | 2022-05-16 | Low-power-consumption wide area internet of things gateway |
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