CN210380929U - HART instrument data wireless acquisition system - Google Patents
HART instrument data wireless acquisition system Download PDFInfo
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- CN210380929U CN210380929U CN201921922540.XU CN201921922540U CN210380929U CN 210380929 U CN210380929 U CN 210380929U CN 201921922540 U CN201921922540 U CN 201921922540U CN 210380929 U CN210380929 U CN 210380929U
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- 238000006243 chemical reaction Methods 0.000 claims description 14
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- 238000000034 method Methods 0.000 claims description 6
- 238000013480 data collection Methods 0.000 claims 8
- 230000006855 networking Effects 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 3
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Abstract
The utility model belongs to industry thing networking field, concretely relates to wireless collection system of HART instrument data. The system comprises a HART instrument, a wireless adapter, one or more LORA base stations, a server and a PC end and/or a mobile phone end, wherein the HART instrument and the wireless adapter are sequentially connected, the one or more LORA base stations are wirelessly connected with one or more wireless adapters, the server is wirelessly connected with the LORA base stations, and the PC end and/or the mobile phone end are connected with the server. The HART instrument data wireless acquisition system has the advantages of strong flexibility, low power consumption, remote monitoring and suitability for high-risk industries such as chemical industry and the like.
Description
Technical Field
The utility model belongs to industry thing networking field, concretely relates to wireless collection system of HART instrument data.
Background
HART is a transitional bus standard proposed by the current american emerson company, which is mainly to superimpose digital signals on 4-20 ma current signals, and the physical layer uses the BELL202 frequency shift keying technology to implement part of the functions of intelligent instruments, but the protocol is not a truly open standard, and the protocol can be reached only by adding his fund, and part of the cost is required for adding the fund. The technology is mainly monopolized by a plurality of foreign major companies, and the technology is also remade by domestic companies in recent two years, but the technology does not reach the level of foreign companies. At present, most of intelligent instruments have HART communication function. However, this part of functions is not really utilized in China, at most, the HART manual operator or HART MODEM is used for parameter setting, and other information (such as equipment information, sensor information, version information of HART command, instrument inherent information and the like) is not uploaded, so that the functions of the HART intelligent instrument are not exerted, and the equipment monitoring is not performed through networking.
Because the industrial field environment is complex and the construction and wiring difficulty of uploading information is high, the concept of the wireless HART adapter terminal is provided. For example, the wireless transfer module of HART signal in the wireless scheme of emerson intelligent wireless HART adapter such as houm. A1110 WirelessHART adapter from chinese cobo corp. In the long run, the purchase quantity of HART instruments tends to decline due to the low HART communication rate and the difficulty in networking, but the HART instruments have a history of more than ten years and still have a very large quantity in the current field.
The current process industry wireless technical scheme can be divided into 3 types: the Wireless mesh solution of the meter sensor represented by Wireless HART, the Wireless mesh solution of the node represented by ISA100 and the Wireless solution represented by WIA-PA (China). The other disadvantage is that the three short-distance communication technology is adopted, the general wireless coverage area in a process industrial factory is within 300 meters, and more gateways or relays are needed to ensure the stability of signals, so that the HART wireless adapter based on the three wireless technologies has large integral investment, huge HART instruments in a factory and expensive user purchase and later maintenance cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a low-power consumption, reduce the wiring degree of difficulty, be applicable to chemical plant, the wireless collection system of HART instrument data that the flexibility is strong.
The utility model discloses a realize through following technical scheme.
A HART instrument data wireless acquisition system comprises a HART instrument, a wireless adapter, one or more LORA base stations, a cloud server and a PC end and/or a mobile phone end, wherein the HART instrument and the wireless adapter are sequentially connected; an Internet of things card is arranged in the LORA base station;
the wireless adapter comprises an explosion-proof shell, an explosion-proof clamping joint, a shielding cable, an antenna arranged outside the explosion-proof shell, a radio frequency connecting wire, a signal conversion module, a PCBA board and a power supply unit, wherein the radio frequency connecting wire, the signal conversion module, the PCBA board and the power supply unit are arranged inside the explosion-proof shell; the anti-explosion clamping joint comprises an upper end anti-explosion clamping joint and a lower end anti-explosion clamping joint, and the PCBA is integrated with an LORA communication module;
the power supply unit and the signal conversion module are connected with the PCBA; one end of the shielding cable is respectively connected with the signal conversion module and the PCBA, and the other end of the shielding cable penetrates through the lower-end explosion-proof clamping connector and is connected with the HART instrument; one end of the radio frequency connecting wire is connected with the PCBA board, and the other end of the radio frequency connecting wire penetrates through the upper-end explosion-proof clamping connector and is connected with the antenna.
Furthermore, the signal conversion module is a HART converter which converts the HART protocol into a MODBUS protocol.
Further, the power supply unit supplies power to the battery pack or an external direct current 24V power supply.
Further, the shielding cable is a four-core shielding cable or a six-core shielding cable.
Furthermore, the HART instrument is a four-wire system HART instrument or a two-wire system HART instrument.
Furthermore, interfaces LOOP +, LOOP-, DC24V + and GND of the four-wire HART instrument are respectively connected with pins LOOP +, LOOP-, DC24V + and GND of the HART converter through four cores of a six-core shielding cable; pins RS485+, RS485-, DC24V + and GND of the HART converter are respectively connected with pins RS485+, RS485-, +, and GND of the PCBA board; pins +, -of the PCBA board are respectively connected with the anode and the cathode of the battery pack or are externally connected with a 24V direct-current power supply through the other two cores of the six-core shielding cable; the LORA communication module is connected with the antenna through a radio frequency connecting line.
Furthermore, interfaces LOOP +, LOOP-of the two-wire HART instrument are respectively connected with pins LOOP-, GND of the HART converter through two cores of a four-core shielded cable, and pins DC24V +, LOOP + of the HART converter are mutually connected through a jumper wire; pins RS485+, RS485-, DC24V + and GND of the HART converter are respectively connected with pins RS485+, RS485-, +, and GND of the PCBA board; pins +, -of the PCBA board are respectively connected with the anode and the cathode of the battery pack or are externally connected with a 24V direct-current power supply through the other two cores of the six-core shielding cable; the LORA communication module is connected with the antenna through a radio frequency connecting line.
Furthermore, still include the connecting wire pipe, the connecting wire pipe is connected and parcel connection wireless adapter and HART instrument's shielded cable with the explosion-proof clamping joint outer end of lower extreme.
Further, the bottom or the side of the explosion-proof shell is provided with a fixed seat.
The utility model discloses a beneficial effect does: the HART protocol is converted into an MODBUS protocol through the HAR converter, the PCBA board integrates the LORA communication module, the LORA base station is internally provided with an Internet of things card, and the anti-explosion shell and the anti-explosion clamping joint are arranged, so that the HART instrument data wireless acquisition system which is high in flexibility, low in power consumption, capable of being remotely monitored and suitable for high-risk industries such as chemical industry and the like is realized; the utility model discloses LORA adopts star topology (TMD networking mode), and the HART instrument is connected to the gateway star, but the HART instrument does not bind only LORA basic station, and on the contrary, the last line data of HART instrument can send for a plurality of basic stations, and the user can realize nimble network deployment through point-to-point or star network agreement and framework.
Drawings
Fig. 1 is an overall schematic view of the present invention;
FIG. 2 is a schematic diagram of a wireless adapter according to the present invention;
fig. 3 is a schematic diagram of the connection of the wireless adapter corresponding to the HART instrument with four wires according to the present invention;
fig. 4 is a schematic diagram of the connection of the wireless adapter corresponding to the HART instrument of the present invention.
In the figure: the wireless power supply device comprises a HART instrument 1, a wireless adapter 2, a LORA base station 3, a cloud server 4, a PC end 5-1, a mobile phone end 5-2, an explosion-proof shell 6, an explosion-proof clamping joint 7, an explosion-proof clamping joint at the upper end 7-1, an explosion-proof clamping joint at the lower end 7-2, a shielded cable 8, an antenna 9, a radio frequency connecting wire 10, a signal conversion module 11, a PCBA board 12, a power supply unit 13 and a fixing seat 14.
Detailed Description
As shown in fig. 1 to 4: a wireless HART instrument data acquisition system comprises a HART instrument 1, a wireless adapter 2, one or more LORA base stations 3 in wireless connection with one or more wireless adapters 2, a cloud server 4 in wireless connection with the LORA base stations 3, and a PC end 5-1 and/or a mobile phone end 5-2 connected with the cloud server 4, wherein the HART instrument 1 and the wireless adapters 2 are connected in sequence;
an Internet of things card is arranged in the LORA base station 3; the wireless adapter 2 comprises an explosion-proof shell 6, an explosion-proof clamping joint 7, a shielding cable 8, an antenna 9 arranged outside the explosion-proof shell 6, a radio frequency connecting wire 10 arranged inside the explosion-proof shell 6, a signal conversion module 11, a PCBA board 12 and a power supply unit 13; the explosion-proof clamping joint comprises an upper end explosion-proof clamping joint and a lower end explosion-proof clamping joint, and the PCBA 12 is integrated with an LORA communication module;
the power supply unit 13 and the signal conversion module 11 are both connected with the PCBA board 12; one end of the shielding cable is respectively connected with the signal conversion module 11 and the PCBA board 12, and the other end of the shielding cable penetrates through the lower-end explosion-proof clamping connector and is connected with the HART instrument 1; one end of the radio frequency connecting wire 10 is connected with the PCBA board 12, and the other end of the radio frequency connecting wire passes through the upper end explosion-proof clamping connector and is connected with the antenna.
The signal conversion module 11 is an HART converter, which converts the HART protocol into the MODBUS protocol. The power supply unit 13 supplies power to the battery pack or an external direct current 24V power supply. The shielding cable is a four-core shielding cable or a six-core shielding cable. The HART instrument 1 is a four-wire system HART instrument or a two-wire system HART instrument.
Interfaces LOOP +, LOOP-, DC24V + and GND of the four-wire HART instrument are respectively connected with pins LOOP +, LOOP-, DC24V + and GND of the HART converter through four cores of a six-core shielded cable; pins RS485+, RS485-, DC24V + and GND of the HART converter are respectively connected with pins RS485+, RS485-, +, and GND of the PCBA board 12; pins +, -of the PCBA board 12 are respectively connected with the anode and the cathode of the battery pack or externally connected with a 24V direct-current power supply through the other two cores of the six-core shielding cable; the LORA communication module is connected to the antenna through a radio frequency connection line 10.
The interfaces LOOP +, LOOP-of the two-wire HART instrument are respectively connected with the pins LOOP-, GND of the HART converter through two cores of a four-core shielded cable, and the pins DC24V +, LOOP + of the HART converter are mutually connected through a jumper wire; pins RS485+, RS485-, DC24V + and GND of the HART converter are respectively connected with pins RS485+, RS485-, +, and GND of the PCBA board 12; pins +, -of the PCBA board 12 are respectively connected with the anode and the cathode of the battery pack or externally connected with a 24V direct-current power supply through the other two cores of the six-core shielding cable; the LORA communication module is connected to the antenna through a radio frequency connection line 10.
The wireless adapter 2 in the system further comprises a wiring tube, and the wiring tube is connected with the outer end of the lower-end explosion-proof clamping joint and wraps a shielding cable for connecting the wireless adapter 2 and the HART instrument.
The bottom or side of the explosion-proof housing 6 of the wireless adapter 2 in the system is provided with a fixed seat 14.
In the system, wireless data acquisition of the HART instrument 1 is realized by the following method:
the method comprises the following steps: issuing an instruction through software installed in a cloud server 4, wherein the instruction is issued to a wireless adapter 2 through an LORA base station 3;
step two: the wireless adapter 2 collects HART instrument data required in the instruction and reports the HART instrument data to the cloud server 4, software installed in the cloud server 4 analyzes the reported data to form a chart, and corresponding events and alarms are formed by setting a threshold value;
step three: the cloud server 4 chart, event and alarm are accessed and read through the PC terminal 5-1 and/or the mobile phone terminal 5-2.
The utility model discloses a during the use: one or more wireless adapters 2 are fixed at the position close to the HART instrument 1 through a fixed seat 14, the HART instrument 1 is connected with the wireless adapters 2, one or more LORA base stations 3 with built-in internet of things cards are erected in a factory or other using places, data are reported or issued to a cloud server 4 through the wireless adapters 2 to the LORA base stations 3, the cloud server analyzes the data,
the specific reporting or issuing and analyzing process comprises the following steps: the software installed in the cloud server 4 runs to issue an instruction for acquiring all variable information, the instruction passes through the operator network, the LORA base station 3 and the wireless adapter 2 to the HART instrument 1, all variable data of the instrument in the HART instrument 1 pass through the wireless adapter 2, the LORA base station 3 and the operator network to be reported to the cloud server 4, the software installed in the cloud server 4 analyzes the received data into a current value, and the current value is converted into required data. Furthermore, the software installed in the cloud server 4 generates a chart such as a trend graph and a table from the required data, sets a threshold value, and generates an event, an alarm and the like according to the data change. And the PC end 5-1 and/or the mobile phone end 5-2 carry out data monitoring by accessing the cloud server.
And the HART instrument can be calibrated by parameter setting, zero point setting and designated point issuing instructions.
The utility model discloses except can long-range wireless HART instrument current information of reading, can further expand to other equipment that support the HART agreement, for example changer, electromagnetic flowmeter, mass flowmeter, PH meter, zirconia, ultrasonic wave level gauge, radar charge level indicator and support the intelligent valve locator etc. of HART agreement.
Claims (9)
1. A wireless HART instrument data acquisition system comprises a HART instrument (1), a wireless adapter (2), one or more LORA base stations (3) in wireless connection with one or more wireless adapters (2), a cloud server (4) in wireless connection with the LORA base stations (3), and a PC end (5-1) and/or a mobile phone end (5-2) connected with the cloud server (4), wherein the HART instrument (1) and the wireless adapter (2) are connected in sequence;
the method is characterized in that: an Internet of things card is arranged in the LORA base station (3);
the wireless adapter (2) comprises an explosion-proof shell (6), an explosion-proof clamping joint (7), a shielding cable (8), an antenna (9) arranged outside the explosion-proof shell (6), and a radio frequency connecting wire (10), a signal conversion module (11), a PCBA board (12) and a power supply unit (13) which are arranged inside the explosion-proof shell (6); the anti-explosion clamping joint (7) comprises an upper end anti-explosion clamping joint and a lower end anti-explosion clamping joint, and the PCBA (printed circuit board assembly) is integrated with an LORA communication module;
the power supply unit (13) and the signal conversion module (11) are connected with the PCBA board (12); one end of the shielding cable (8) is respectively connected with the signal conversion module (11) and the PCBA board (12), and the other end of the shielding cable penetrates through the lower-end explosion-proof clamping joint and is connected with the HART instrument (1); one end of the radio frequency connecting wire (10) is connected with the PCBA board (12), and the other end of the radio frequency connecting wire penetrates through the upper end explosion-proof clamping connector and is connected with the antenna (9).
2. The wireless HART meter data collection system of claim 1, wherein: the signal conversion module (11) is a HART converter which converts a HART protocol into a MODBUS protocol.
3. The wireless HART meter data collection system of claim 1, wherein: the power supply unit (13) supplies power to the battery pack or an external direct current 24V power supply.
4. The wireless HART meter data collection system of claim 3, wherein: the shielding cable (8) is a four-core shielding cable or a six-core shielding cable.
5. The wireless HART meter data collection system of claim 4, wherein: the HART instrument (1) is a four-wire system HART instrument or a two-wire system HART instrument.
6. The wireless HART meter data collection system of claim 5, wherein: interfaces LOOP +, LOOP-, DC24V + and GND of the four-wire system HART instrument are respectively connected with pins LOOP +, LOOP-, DC24V + and GND of the HART converter through four cores of the six-core shielded cable; pins RS485+, RS485-, DC24V + and GND of the HART converter are respectively connected with pins RS485+, RS485-, +, and GND of the PCBA board (12); pins +, -of the PCBA board (12) are respectively connected with the anode and the cathode of the battery pack or are externally connected with the 24V direct-current power supply through the other two cores of the six-core shielding cable; the LORA communication module is connected with an antenna through a radio frequency connecting line (10).
7. The wireless HART meter data collection system of claim 5, wherein: the interfaces LOOP +, LOOP-of the two-wire HART instrument are respectively connected with pins LOOP-, GND of the HART converter through two cores of the four-core shielded cable, and the pins DC24V +, LOOP + of the HART converter are mutually connected through jumper wires; pins RS485+, RS485-, DC24V + and GND of the HART converter are respectively connected with pins RS485+, RS485-, +, and GND of the PCBA board (12); pins +, -of the PCBA board (12) are respectively connected with the anode and the cathode of the battery pack or are externally connected with the 24V direct-current power supply through the other two cores of the six-core shielding cable; the LORA communication module is connected with an antenna (9) through a radio frequency connecting line (10).
8. The wireless HART meter data collection system of claim 1, wherein: the wireless adapter (2) further comprises a wiring pipe, and the wiring pipe is connected with the outer end of the lower end explosion-proof clamping joint and wraps and is connected with the shielding cables of the wireless adapter (2) and the HART instrument (1).
9. The wireless HART meter data collection system of claim 1, wherein: and a fixed seat (14) is arranged at the bottom or the side surface of the explosion-proof shell (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921922540.XU CN210380929U (en) | 2019-11-08 | 2019-11-08 | HART instrument data wireless acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921922540.XU CN210380929U (en) | 2019-11-08 | 2019-11-08 | HART instrument data wireless acquisition system |
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| Publication Number | Publication Date |
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| CN210380929U true CN210380929U (en) | 2020-04-21 |
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| CN201921922540.XU Expired - Fee Related CN210380929U (en) | 2019-11-08 | 2019-11-08 | HART instrument data wireless acquisition system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110719339A (en) * | 2019-11-08 | 2020-01-21 | 宁夏锐波网络有限公司 | HART instrument data wireless acquisition system |
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- 2019-11-08 CN CN201921922540.XU patent/CN210380929U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110719339A (en) * | 2019-11-08 | 2020-01-21 | 宁夏锐波网络有限公司 | HART instrument data wireless acquisition system |
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Granted publication date: 20200421 |