CN213149987U - Low-cost collection instrument system based on LORA wireless network - Google Patents

Abstract

The utility model relates to a low-cost collection instrument system based on LORA wireless network. The system comprises a data concentrator host unit which is arranged at a high place and can realize the mobile communication function, and a field acquisition unit which is arranged on the field and carries out LORA communication with the data concentrator host unit. The utility model discloses system low cost, installation are implemented portably, the data is copied and is reported accurately, data acquisition is simple and convenient, can be at practical application on all kinds of factory industrial control on-the-spot flow meter.

Description

Low-cost collection instrument system based on LORA wireless network

Technical Field

The utility model belongs to instrument data acquisition, wireless data transmission field, concretely relates to low-cost collection instrument system based on LORA wireless network.

Background

In industrial plants, especially in water works, sewage plants and other scenes, the on-site header accumulated value acquisition is a work which must be completed every day, and currently, accumulated digital acquisition and pulse acquisition are mainly performed.

Digital acquisition: on the main water inlet and outlet instrument, the PLC directly reads the accumulated signals and sends the accumulated signals to an upper computer system by using a digital circuit and an MODBUS protocol, the method is good in accuracy, but the system cost is higher, and the method is only used in an important water inlet and outlet flowmeter due to the cost problem. And the relevant interfaces are already used by the environmental monitoring acquisition instrument. Although this method is the optimal solution, it is subject to cost problems and is not widely used.

Pulse acquisition: the field flow instrument outputs pulses to the PLC through the passive pulse interface, the PLC accumulates the pulse times and converts the pulses into flow values through a conversion algorithm and accumulates the flow values in the PLC, the method is used in a large number, however, due to the limitation that the storage space of the accumulated value set by the PLC is unreasonable and the like, the accumulated value is easy to overflow, and once the accumulated value overflows and is difficult to correct, production management personnel cannot directly use the accumulated data on the upper computer, and the data form of the upper computer is similar to that of a nominal form.

Based on the not enough of two kinds of systems in use, the utility model discloses a design a money data acquisition accurate, the reliability is high, but centralized management, low cost, can realize concentrated copying, realize that nobody copies the gauge outfit data system of reporting, will improve present gauge outfit data greatly and copy the work of reporting, produce certain using value.

Disclosure of Invention

An object of the utility model is to provide a low-cost collection instrument system based on LORA wireless network, this system low cost, installation are implemented portably, the data is copied and is reported accurately, data acquisition is simple and convenient, can be at practical application on all kinds of factory industrial control on-the-spot flow meter

In order to achieve the above purpose, the technical scheme of the utility model is that: a low-cost acquisition instrument system based on an LORA wireless network comprises a data concentrator host unit which is installed at a high place and can realize the mobile communication function, and a field acquisition unit which is installed on the field and carries out LORA communication with the data concentrator host unit.

The utility model discloses an in the embodiment, data concentrator host unit includes first single chip module and the first LORA wireless radio frequency module, GPRS communication module/ethernet module, solar energy power module, the lithium cell module of being connected with this first single chip module.

The utility model discloses an in the embodiment, on-spot collection unit includes second single chip module and the second LORA wireless radio frequency module, pulse collection module, power module, display module, the button module of being connected with this second single chip module.

In an embodiment of the present invention, the first single chip module is an STM32 single chip module.

In an embodiment of the present invention, the second single chip module is an STM32 single chip module.

In an embodiment of the present invention, the GPRS communication module employs a SIM 800L.

Compared with the prior art, the utility model discloses following beneficial effect has: the system has the advantages of low cost, simple and convenient installation and implementation, accurate data copying and reporting and simple and convenient data acquisition, and can be practically applied to various factory industrial control field flow meters.

Drawings

Fig. 1 is a system block diagram of the present invention.

Fig. 2 is a schematic diagram of a first single-chip microcomputer module circuit of the present invention.

Fig. 3 is a schematic circuit diagram of a first LORA wireless rf module of the present invention.

Fig. 4 is a schematic circuit diagram of the GPRS communication module/ethernet module according to the present invention.

Fig. 5 is a schematic circuit diagram of a solar power module and a lithium battery module according to the present invention.

Fig. 6 is a schematic circuit diagram of a second single chip module according to the present invention.

Fig. 7 is a schematic circuit diagram of a second LORA wireless rf module of the present invention.

Fig. 8 is a schematic circuit diagram of the pulse acquisition module of the present invention.

Fig. 9 is a schematic circuit diagram of the power supply module of the present invention.

Fig. 10 is a schematic circuit diagram of the display module and the key module of the present invention.

Detailed Description

The technical solution of the present invention will be specifically described below with reference to the accompanying drawings.

As shown in FIG. 1, the utility model provides a low-cost collection instrument system based on LORA wireless network, including installing in the eminence can realize the data concentrator host computer unit of mobile communication function, installing in the on-the-spot collection unit that carries out the LORA communication with data concentrator host computer unit. The data concentrator host unit comprises a first single chip microcomputer module, a first LORA wireless radio frequency module, a GPRS communication module/Ethernet module, a solar power supply module and a lithium battery module, wherein the first LORA wireless radio frequency module, the GPRS communication module/Ethernet module, the solar power supply module and the lithium battery module are connected with the first single chip microcomputer module. The field acquisition unit comprises a second single chip microcomputer module, and a second LORA wireless radio frequency module, a pulse acquisition module, a power supply module, a display module and a key module which are connected with the second single chip microcomputer module. The first singlechip module is an STM32 singlechip module. And the second singlechip module is an STM32 singlechip module. The GPRS communication module adopts a SIM 800L.

The following is a concrete implementation example of the present invention.

The utility model aims to realize low-cost target, realize data transmission under the prerequisite without the help of automatic control transmission system, be subject to the cost equally, any wired transmission is all not suitable for. Therefore, the system adopts the LORA narrow-band Internet of things technology to realize the transmission of the radio system. In the aspect of data acquisition, the pulse acquisition work of the instrument is realized by using an STM32 series single chip microcomputer which is relatively cheap and has high response speed, so that the flexible layout of the system can be realized, only one or a plurality of host systems (the host and a cloud platform use a GPRS network to transmit data) are required to be arranged, the data can be acquired and transmitted, the influence of field wiring is avoided, the system can be installed where the system is required, and the problem whether the field condition meets the requirement or not is completely avoided.

The utility model relates to a low-cost collection instrument system based on LORA wireless network, including following several main parts:

first site acquisition instrument (fig. 6-10)

The functions are as follows: the system is connected with a field flow meter, collects flow data through pulses, receives a data collection command sent by a host through a self-contained LORA wireless module, and sends the data to the host. Meanwhile, the acquisition instrument is provided with a display screen and keys, and functions of synchronous setting of accumulated data, data reviewing and the like are achieved.

The system has the functions of external power supply and internal lithium battery dual power supply, and can work even if the external power is off when the acquisition instrument provides a stable power supply.

Hardware composition:

STM32 singlechip, 2, pulse acquisition module, 3, LORA wireless radio frequency module + small antenna, 4, power supply, 5, display module, 6, key input, 7, shell (convenient field installation)

(II) data concentrator host (fig. 2-5)

The functions are as follows: the system is installed at a stable high place, can realize single-point whole-plant coverage, realizes data communication with a field acquisition terminal, performs data collection by training terminals one by one, and can issue configuration commands to perform remote configuration. And after the data is collected, the data is sent to the cloud platform through the GPRS module of the mobile phone through the mobile phone network, so that the data recording process is realized.

Hardware composition:

STM32 singlechip, 2, LORA wireless radio frequency module + big antenna, 3, GPRS communication module/Ethernet module 4, lithium battery module, 5, solar power supply module, 6, shell (convenient field installation)

In addition, the system also comprises a data cloud platform

The functions are as follows: the terminal data information sent by the host is received and presented through a friendly interface, a summary report can be generated or a data early warning analysis function can be realized, a configuration function is provided, a graphical data presentation mode can be realized, and a ground platform can perform centralized management and the like on the collector.

The utility model discloses the system is based on current data transmission and collection technique and field device actual conditions, utilizes technologies such as current popular thing networking, low-power consumption wireless network to integrate with current instrument, the one set of on-the-spot data acquisition appearance of research and development, and this collection appearance can gather instrument pulse accumulative total amount information to send toward the wireless base station department that sets up in the factory through wireless module, transmit to the data acquisition platform by the basic station equipment again, just so can realize the purpose of accumulative amount collection. The acquisition instrument provides a real-time data correction function, and field patrolmen can manually correct the accumulated quantity so as to adapt to errors generated under the conditions of meter changing, faults and the like and prevent the accumulated errors from being enlarged. Because the system uses wireless copy report, the system can realize copy report once in a few minutes, and plan to copy report once per hour under the practical state, thus providing the ability of mastering the accumulated data of the instrument at any time for the manager, and the on-time copy report is automatically completed, thereby avoiding the problem of daily error caused by inconsistent copy report sequence. The copied data are stored in a remote server, data summarization is carried out through the existing production management system, and rich management functions such as daily report generation, chart generation and the like are realized. A more efficient data query platform is provided for management personnel. By utilizing the scheme, the management pain point of accumulated data reporting can be well solved.

Above is the utility model discloses a preferred embodiment, all rely on the utility model discloses the change that technical scheme made, produced functional action does not surpass the utility model discloses during technical scheme's scope, all belong to the utility model discloses a protection scope.

Claims (6)

1. The low-cost acquisition instrument system based on the LORA wireless network is characterized by comprising a data concentrator host unit which is arranged at a high position and can realize a mobile communication function, and a field acquisition unit which is arranged on the field and is communicated with the data concentrator host unit to carry out LORA.

2. The low-cost collection instrument system based on the LORA wireless network of claim 1, wherein the data concentrator host unit comprises a first single chip microcomputer module, and a first LORA wireless radio frequency module, a GPRS communication module/Ethernet module, a solar power supply module and a lithium battery module which are connected with the first single chip microcomputer module.

3. The low-cost acquisition instrument system based on the LORA wireless network as claimed in claim 1, wherein the field acquisition unit comprises a second single chip microcomputer module and a second LORA wireless radio frequency module, a pulse acquisition module, a power supply module, a display module and a key module which are connected with the second single chip microcomputer module.

4. The LORA wireless network-based low-cost collection instrument system as claimed in claim 2, wherein the first single chip microcomputer module is an STM32 single chip microcomputer module.

5. The LORA wireless network-based low-cost collection instrument system as claimed in claim 3, wherein the second single chip microcomputer module is an STM32 single chip microcomputer module.

6. A low cost collection meter system based on LORA wireless network as claimed in claim 2, wherein said GPRS communication module uses SIM 800L.

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