Remote sporadic instrument data acquisition system

Abstract

The utility model relates to the technical field of data acquisition, and discloses a remote sporadic instrument data acquisition system, which comprises a remote station instrument, an instrument cable, a first serial port to optical fiber converter, a converter optical cable, a second serial port to optical fiber converter, a connecting cable and an industrial control computer, the instrument cable is electrically connected with a first serial port to optical fiber converter, the first serial port to optical fiber converter is electrically connected with a converter optical cable, the converter optical cable is electrically connected with a second serial port to optical fiber converter, and the second serial port to optical fiber converter is electrically connected with a connecting cable. The utility model has the beneficial effects that the signal transmission of the device does not depend on communication operators completely, the device can be suitable for all application occasions, such as ocean platforms, deserts and other areas which are rarely popular and have no operator signal towers, the direct connection stability of cables or optical cables is good, and the acquisition cost of on-site measuring instruments and central control room terminal equipment can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a collection system for remote sporadic instrument data. Background Art

[0002] The traditional method of collecting data from long-distance and scattered instruments mainly relies on RTU to collect data from remote station instruments, and then communicates to the central control room through the operator's signal tower 5G network, saving the work of laying optical cables.

[0003] The following problems are commonly encountered in this approach:

[0004] 1. Signal transmission is completely dependent on communication operators and is not suitable for all applications, such as offshore platforms, deserts and other inaccessible areas without operator signal towers.

[0005] 2. 5G network has good stability without direct connection of cables or optical cables.

[0006] 3. If the number of long-distance scattered instruments is small, the cost of RTU will increase relatively.

[0007] 4. The purchase cost of field instrumentation and central control room terminal equipment is relatively high. Utility Model Content

[0008] The purpose of the utility model is to provide a remote sporadic instrument data collection system in order to solve the above problems, thereby solving the problems mentioned in the background technology.

[0009] In order to solve the above problems, the utility model provides a technical solution:

[0010] A system for collecting long-distance scattered instrument data includes a remote station instrument, an instrument cable, a first serial port to optical fiber converter, a converter optical cable, a second serial port to optical fiber converter, a connecting cable and an industrial control computer. The remote station instrument is electrically connected to the instrument cable, the instrument cable is electrically connected to the first serial port to optical fiber converter, the first serial port to optical fiber converter is electrically connected to the converter optical cable, the converter optical cable is electrically connected to the second serial port to optical fiber converter, the second serial port to optical fiber converter is electrically connected to the connecting cable, and the connecting cable is electrically connected to the industrial control computer.

[0011] As a preferred solution of the present utility model, cooling components are provided inside the first serial port to fiber optic converter and the second serial port to fiber optic converter, anti-loosening components are provided on the upper and lower sides of the first serial port to fiber optic converter and the second serial port to fiber optic converter, and installation components are provided on both sides of the first serial port to fiber optic converter and the second serial port to fiber optic converter.

[0012] As a preferred solution of the utility model, the cooling assembly includes a water inlet pipe, which is fixedly installed on one side of the first serial port to fiber optic converter and the second serial port to fiber optic converter, and a circulating water pipe is fixedly installed on one side of the water inlet pipe. The circulating water pipe extends to the interior of the first serial port to fiber optic converter and the second serial port to fiber optic converter, and a water outlet pipe is fixedly installed on one side of the circulating water pipe.

[0013] As a preferred solution of the utility model, the mounting assembly includes mounting plates, and each two mounting plates are symmetrically fixedly mounted on both sides of the first serial port to fiber optic converter and the second serial port to fiber optic converter, and each two mounting plates have through holes opened inside, and fixing bolts are connected through the inside of the through holes.

[0014] As a preferred solution of the utility model, the anti-loosening component includes connectors, and every two of the connectors are symmetrically fixedly installed at both ends of the instrument cable, the converter optical cable and the connecting cable, and the outer ends of the connectors are provided with card slots.

[0015] As a preferred solution of the utility model, a current sensor is fixedly installed on the top of the connector, a connector is movably connected inside the connector, and a thermal expansion and contraction cylinder is fixedly installed inside the connector.

[0016] The beneficial effects of the utility model are as follows: the signal transmission of the device does not need to be completely dependent on communication operators, and can be applied to all application scenarios, such as offshore platforms, deserts and other sparsely populated areas without operator signal towers, and the direct connection of cables or optical cables has good stability, which can reduce the purchase cost of field instrumentation and central control room terminal equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] For ease of explanation, the present invention is described in detail by the following specific implementations and drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the anti-loosening component of the utility model;

[0020] Figure 3 This is a schematic diagram of the cooling assembly structure of the utility model;

[0021] Figure 4 This utility model Figure 1 Enlarged view of point A in the middle.

[0022] In the figure: 1. Remote station instrument; 2. Instrument cable; 3. First serial port to fiber optic converter; 4. Converter optical cable; 5. Second serial port to fiber optic converter; 6. Connecting cable; 7. Industrial computer; 8. Cooling assembly; 81. Water inlet pipe; 82. Circulating water pipe; 83. Water outlet pipe; 9. Mounting assembly; 91. Mounting plate; 92. Through hole; 93. Fixing bolt; 10. Anti-loosening assembly; 101. Connector; 102. Slot; 103. Current sensor; 104. Connector; 105. Thermal expansion and contraction tube. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] Embodiment 1:

[0025] See also Figure 1 - Figure 4 The utility model provides a technical solution: a long-distance scattered instrument data collection system, including a remote station instrument 1, an instrument cable 2, a first serial port to optical fiber converter 3, a converter optical cable 4, a second serial port to optical fiber converter 5, a connecting cable 6 and an industrial control computer 7, the remote station instrument 1 is electrically connected to the instrument cable 2, the instrument cable 2 is electrically connected to the first serial port to optical fiber converter 3, the first serial port to optical fiber converter 3 is electrically connected to the converter optical cable 4, the converter optical cable 4 is electrically connected to the second serial port to optical fiber converter 5, the second serial port to optical fiber converter 5 is electrically connected to the connecting cable 6, and the connecting cable 6 is electrically connected to the industrial control computer 7.

[0026] The remote station instruments 1 involve various detection instruments, such as temperature, pressure, liquid level, flow, and analytical instruments. The remote station instruments 1 must have their own RS485 communication interface and support the standard Modbus-RTU protocol, or convert the non-serial communication interface into RS485 serial communication format through relevant conversion devices and support the standard Modbus-RTU protocol. The number of remote station instruments 1 can reach 31, which are connected to the first serial port to fiber optic converter 3 and the second serial port to fiber optic converter 5 in parallel. If there are more than 31 instruments, the application can be expanded by adding an additional set of the first serial port to fiber optic converter 3 and the second serial port to fiber optic converter 5.

[0027] The first serial port to optical fiber converter 3 and the second serial port to optical fiber converter 5 at the remote station side are used to collect data from the remote station instrument 1 in a serial communication manner.

[0028] The first serial port to optical fiber converter 3 and the second serial port to optical fiber converter 5 on the control room side connect the remote station instrument 1 signal to the DCS cabinet terminal or directly to the industrial control computer 7 via the serial port.

[0029] The first serial-to-fiber converter 3 and the second serial-to-fiber converter 5 are equipped with multiple interfaces, which can support RS-232 or RS-422 / 485 serial ports, multi-mode or single-mode optical fibers. The serial-to-fiber converters on both sides need to be paired through relevant software.

[0030] The first serial port to fiber converter 3 and the second serial port to fiber converter 5 on both sides are connected by a converter optical cable 4. Multimode fiber can extend the serial port transmission distance to 5km, and single-mode fiber can extend the serial port transmission distance to 40km.

[0031] Embodiment 2:

[0032] Remote station instrument 1, a single serial port to fiber optic converter can be connected in parallel to 31 units, connected to the first serial port to fiber optic converter 3 on the station side through RS485 instrument cable 2, the first serial port to fiber optic converter 3 on the station side is connected to the second serial port to fiber optic converter 5 on the control room side through single-mode or multi-mode optical fiber, the converter models used for single-mode and multi-mode optical fiber are different, the communication distance needs to be informed in advance, the model can be configured according to the communication distance, the maximum communication distance is 40km, the second serial port to fiber optic converter 5 is installed in the control room or cabinet room and can be connected to the DCS cabinet, serial communication is configured in the DCS, or directly connected to the industrial control computer 7, install special or general software on the computer to monitor the data of remote station instrument 1.

[0033] Furthermore, a cooling assembly 8 is provided inside the first serial port to fiber optic converter 3 and the second serial port to fiber optic converter 5, anti-loosening assemblies 10 are provided on the upper and lower sides of the first serial port to fiber optic converter 3 and the second serial port to fiber optic converter 5, and installation assemblies 9 are provided on both sides of the first serial port to fiber optic converter 3 and the second serial port to fiber optic converter 5.

[0034] Furthermore, the cooling assembly 8 includes a water inlet pipe 81, which is fixedly installed on one side of the first serial port to fiber optic converter 3 and the second serial port to fiber optic converter 5, and a circulating water pipe 82 is fixedly installed on one side of the water inlet pipe 81. The circulating water pipe 82 extends to the interior of the first serial port to fiber optic converter 3 and the second serial port to fiber optic converter 5, and a water outlet pipe 83 is fixedly installed on one side of the circulating water pipe 82.

[0035] Furthermore, the mounting assembly 9 includes mounting plates 91, and each two mounting plates 91 are symmetrically fixedly mounted on both sides of the first serial port to fiber optic converter 3 and the second serial port to fiber optic converter 5, and each two mounting plates 91 have a through hole 92 formed inside, and a fixing bolt 93 is passed through the inside of the through hole 92.

[0036] Furthermore, the anti-loosening assembly 10 includes connectors 101 , and every two connectors 101 are symmetrically fixedly installed at both ends of the instrument cable 2 , the converter optical cable 4 and the connecting cable 6 , and the outer ends of the connectors 101 are each provided with a card slot 102 .

[0037] Furthermore, a current sensor 103 is fixedly installed on the top of the connector 101 , a connector 104 is movably connected inside the connector 101 , and a thermal expansion and contraction tube 105 is fixedly installed inside the connector 104 .

[0038] To sum up: when the cable needs to be fixed, insert the connector 101 into the connector 104, and when cooling the thermal expansion and contraction tube 105, reduce the size of the internal space of the thermal expansion and contraction tube 105, clamp the thermal expansion and contraction tube 105 in the card slot 102, fix the cable, and use the current sensor 103 to detect the current on the cable surface. When the converter needs to be installed, use the fixing bolt 93 to pass through the through hole 92, and use the mounting plate 91 to fix and install the converter. When the converter needs to be cooled, transfer the condensate from the water inlet pipe 81 to the inside of the circulating water pipe 82, and then discharge it through the water outlet pipe 83 for circulation cooling.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A system for collecting remote and sporadic instrument data. It is characterized in that The invention comprises a remote station instrument (1), an instrument cable (2), a first serial port to optical fiber converter (3), a converter optical cable (4), a second serial port to optical fiber converter (5), a connecting cable (6) and an industrial control computer (7), wherein the remote station instrument (1) is electrically connected to the instrument cable (2), the instrument cable (2) is electrically connected to the first serial port to optical fiber converter (3), the first serial port to optical fiber converter (3) is electrically connected to the converter optical cable (4), the converter optical cable (4) is electrically connected to the second serial port to optical fiber converter (5), the second serial port to optical fiber converter (5) is electrically connected to the connecting cable (6), and the connecting cable (6) is electrically connected to the industrial control computer (7).

2. A system for collecting remote and sporadic instrument data according to claim 1, It is characterized in that A cooling assembly (8) is provided inside the first serial port to optical fiber converter (3) and the second serial port to optical fiber converter (5); anti-loosening assemblies (10) are provided on the upper and lower sides of the first serial port to optical fiber converter (3) and the second serial port to optical fiber converter (5); and mounting assemblies (9) are provided on both sides of the first serial port to optical fiber converter (3) and the second serial port to optical fiber converter (5).

3. A system for collecting remote and sporadic instrument data according to claim 2, It is characterized in that The cooling assembly (8) comprises a water inlet pipe (81), wherein the water inlet pipe (81) is fixedly mounted on one side of the first serial port to optical fiber converter (3) and the second serial port to optical fiber converter (5), a circulating water pipe (82) is fixedly mounted on one side of the water inlet pipe (81), the circulating water pipe (82) extends to the interior of the first serial port to optical fiber converter (3) and the second serial port to optical fiber converter (5), and a water outlet pipe (83) is fixedly mounted on one side of the circulating water pipe (82).

4. A system for collecting remote and sporadic instrument data according to claim 2, It is characterized in that The mounting assembly (9) comprises mounting plates (91), and each two mounting plates (91) are symmetrically fixedly mounted on both sides of the first serial port to optical fiber converter (3) and the second serial port to optical fiber converter (5), and each two mounting plates (91) are provided with through holes (92) inside, and fixing bolts (93) are penetrated and connected inside the through holes (92).

5. A system for collecting remote and sporadic instrument data according to claim 2, It is characterized in that The anti-loosening assembly (10) comprises connectors (101), and each two connectors (101) are symmetrically fixedly installed at two ends of the instrument cable (2), the converter optical cable (4) and the connecting cable (6), and the outer ends of the connectors (101) are each provided with a card slot (102).

6. A system for collecting remote and sporadic instrument data according to claim 5, It is characterized in that A current sensor (103) is fixedly mounted on the top of each of the connectors (101), a connector (104) is movably connected to the interior of each of the connectors (101), and a thermal expansion and contraction cylinder (105) is fixedly mounted on the interior of each of the connectors (104).

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