CN216721587U - Data transmission device based on data compression of cloud sensing - Google Patents
Data transmission device based on data compression of cloud sensing Download PDFInfo
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Abstract
The utility model discloses a data transmission device based on cloud sensing data compression, which comprises a sensor terminal and a cloud end, wherein the sensor terminal is in communication connection with the cloud end, the sensor terminal is provided with a data compression unit and a communication unit, and the data compression unit transmits compressed detection data to the cloud end through the communication unit under the condition that the sensor terminal acquires the detection data. According to the utility model, the data compression unit is arranged at the sensor terminal to compress the detection data, and the communication unit is arranged at the sensor terminal to directly establish communication connection with the cloud terminal, so that the compressed detection data can be directly transmitted to the cloud terminal and decompressed, and the problems of small data transmission amount per unit time and low transmission link reliability of the traditional sensor are solved.
Description
Technical Field
The utility model relates to the technical field of sensor data transmission, in particular to a data transmission device based on data compression of cloud sensing.
Background
Traditional sensor does not carry out the wireless transmission function, need carry out data acquisition through DTU, PLC, RTU, singlechip or embedded system, then transmits to local server through various networks, and local server transmits the use scenes such as artificial intelligence, big data through the internet again. In the method, the number of data nodes and links is large, and the data cannot ensure the authenticity, accuracy, effectiveness, reliability, real-time property and density, and the data loss condition cannot be avoided. Meanwhile, the system needs a plurality of external conditions such as power supply, network supply and the like.
In summary, the traditional sensor realizes cloud transmission, and has the problems of small data transmission amount in unit time, low reliability of a transmission link and the like.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a data transmission device based on data compression, which solves the problems of small data transmission amount per unit time and low transmission link reliability of the conventional sensor by improving the internal structure of the sensor.
In order to solve the technical problems, the technical scheme of the utility model is to adopt a data transmission device based on data compression, the data transmission device comprises a sensor terminal and a cloud end, the sensor terminal is in communication connection with the cloud end, the sensor terminal is provided with a data compression unit and a communication unit, and the data compression unit transmits compressed detection data to the cloud end through the communication unit under the condition that the sensor terminal acquires the detection data.
Optionally, the sensor terminal is further provided with a sensing module for collecting the detection data, wherein the sensing module at least comprises one or more of a temperature and humidity detection device, a pressure difference detection device, a flow rate detection device and an environment monitoring device.
Optionally, the communication unit includes at least an ethernet controller, a 4G/WIFI communication unit, and an RS485 communication unit.
Optionally, the data compression unit is an MCU.
Optionally, the ethernet controller is electrically connected to the MCU through an SPI interface, the 4G/WIFI communication unit is electrically connected to the MCU through a UART1 interface, and the RS485 communication unit is electrically connected to the MCU through a UART2 interface.
Optionally, the sensor terminal further includes a data cache unit for storing the detection data.
Optionally, the cloud further includes a decompression unit configured to decompress the compressed detection data.
The data transmission device based on data compression of cloud sensing provided by the utility model has the advantages that the data compression unit is arranged at the sensor terminal to compress the detection data, and the communication unit is arranged at the sensor terminal to directly establish communication connection with the cloud end, so that the compressed detection data can be directly transmitted to the cloud end and decompressed, and the problems of small data transmission amount per unit time and low transmission link reliability of the traditional sensor are solved.
Drawings
FIG. 1 is a simplified structural electrical connection diagram of a data transmission device based on data compression of the present invention;
fig. 2 is a simplified circuit connection diagram of a preferred embodiment of the data transmission apparatus based on data compression of the present invention.
Fig. 3 is a simplified flow diagram of a preferred embodiment of the amplitude screening method of the present invention.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following embodiments.
As shown in fig. 1, a data transmission device based on data compression comprises a sensor terminal 1 and a cloud terminal 2, wherein the sensor terminal 1 is in communication connection with the cloud terminal 2, the sensor terminal 1 is provided with a data compression unit 11 and a communication unit 12, and when the sensor terminal 1 acquires detection data, the data compression unit 11 transmits the compressed detection data to the cloud terminal 2 through the communication unit 12. Wherein, the communication unit 12 at least comprises an ethernet controller, a 4G/WIFI communication unit and an RS485 communication unit; the sensor terminal 1 further comprises a data cache unit 14 for storing the detection data.
Further, the sensor terminal 1 is further provided with a sensing module 13 for collecting the detection data, wherein the sensing module 13 at least comprises one or more of a temperature and humidity detection device, a pressure difference detection device, a flow rate detection device and an environment monitoring device.
Further, the data compression unit 11 is an MCU. The method for compressing the detection data by the MCU comprises the following steps: defining the acquisition period of the detection data as T, and acquiring the detection data D in T timenWith a collection frequency fADCAnd then the data quantity n is T fADC，Dn＝{D1 D2 D3…Dn-1 Dn}: if the detected data is D (n) is non-periodicA continuous time signal of the nature, representable by Fourier transform as
For finite length discrete signals d (n),
the data is processed by FFT to obtain the signal frequency domain Xn [ a0+ib0,a1+ib1,a2+ib2,…an+ibn]Then, the frequency domain is converted to amplitude and modulo:
wherein Zn is a modulus corresponding to a complex number representing a frequency domain; frequency domain based complex correspondence modulo generation of full amplitude
Wherein, PnIs the amplitude corresponding to the frequency domain; calculating a single-sided amplitude based on the complete amplitude
Calculating initial phase angles theta at different frequencies Cn:
screening the amplitude corresponding to the frequency domain without influencing the sensor precision FS and the sensor range L, and abandoning the amplitude; after using the method of screening amplitude as described in FIG. 3, P is added1The m pieces of data in (1) are sorted, and a frequency domain (f), an amplitude (P) and an initial phase angle (θ) are subjected to data combination to generate the compressed detection data, wherein the data amount of the compressed detection data is as follows: f. ofm＝nm*fADCThe data packet is: CD (compact disc)m＝{f0,P0,θ0\f1,P1,θ1\f2,P2θ2……\fm-1,Pm-1,θm-1}。
Furthermore, as shown in fig. 2, when the MCU is an STM32L073RBT6, the ethernet controller is electrically connected to the MCU through the SPI interface, the 4G/WIFI communication unit is electrically connected to the MCU through the UART1 interface, and the RS485 communication unit is electrically connected to the MCU through the UART2 interface.
Further, the cloud 2 further includes a decompression unit 21 for decompressing the compressed detection data. The method for restoring the compressed detection data by the decompression unit 21 comprises the following steps: by reduction of formula
Wherein n is belonged to [1, T f ∈ADC]And restoring the compressed data packet: CD (compact disc)m＝{f0,P0,θ0\f1,P1,θ1\f2,P2 θ2……\fm-1,Pm-1,θm-1}, generating detection data Dn＝{D1 D2 D3…Dn-1 Dn}。
According to the utility model, the data compression unit is arranged at the sensor terminal to compress the detection data, and the communication unit is arranged at the sensor terminal to directly establish communication connection with the cloud terminal, so that the compressed detection data can be directly transmitted to the cloud terminal and decompressed, and the problems of small data transmission amount per unit time and low transmission link reliability of the traditional sensor are solved.
The data transmission device based on data compression of cloud sensing provided by the embodiment of the utility model is described in detail above. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the components and steps of the various examples have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
Claims (7)
1. A data transmission device based on cloud sensing data compression is characterized by comprising a sensor terminal (1) and a cloud end (2), wherein the sensor terminal (1) is in communication connection with the cloud end (2), the sensor terminal (1) is provided with a data compression unit (11) and a communication unit (12),
under the condition that the sensor terminal (1) acquires detection data, the data compression unit (11) transmits the compressed detection data to the cloud end (2) through the communication unit (12).
2. The data transmission device according to claim 1, characterized in that the sensor terminal (1) is further provided with a sensing module (13) for acquiring the detection data, wherein,
the sensing module (13) at least comprises one or more devices of a temperature and humidity detection device, a pressure difference detection device, a flow velocity detection device and an environment monitoring device.
3. A data transmission device according to claim 1, characterized in that the communication unit (12) comprises at least an ethernet controller, a 4G/WIFI communication unit and an RS485 communication unit.
4. A data transmission device according to claim 2, characterized in that the data compression unit (11) is an MCU.
5. The data transmission device of claim 4, wherein the Ethernet controller is electrically connected with the MCU through an SPI interface, the 4G/WIFI communication unit is electrically connected with the MCU through a UART1 interface, and the RS485 communication unit is electrically connected with the MCU through a UART2 interface.
6. The data transmission device according to claim 1, characterized in that the sensor terminal (1) further comprises a data buffer unit (14) for storing the detection data.
7. The data transmission apparatus according to claim 1, wherein the cloud (2) further comprises a decompression unit (21) for decompressing the compressed detection data.
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| CN115442447A (en) * | 2022-08-22 | 2022-12-06 | 南京森特智能科技有限公司 | Edge compression computing device for multi-source data access |
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| CN115442447A (en) * | 2022-08-22 | 2022-12-06 | 南京森特智能科技有限公司 | Edge compression computing device for multi-source data access |
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