CN105425650A

CN105425650A - Ethernet-based pump cabin environment detection apparatus

Info

Publication number: CN105425650A
Application number: CN201410472580.4A
Authority: CN
Inventors: 李相武; 王瑛; 李忠喜
Original assignee: Harbin Hengyu Mingxiang Technology Co Ltd
Current assignee: Harbin Hengyu Mingxiang Technology Co Ltd
Priority date: 2014-09-17
Filing date: 2014-09-17
Publication date: 2016-03-23

Abstract

The invention discloses an Ethernet-based pump cabin environment detection apparatus, which comprises a power supply module, an environment monitoring module, an alarming and control module, an Ethernet communication module and a parameter storage module. An LPC2294 is selected as a master control chip, which communicates with a centralized control center through Ethernet. Sensor analog signals collected by the environment monitoring module are converted into digital signals through analog-to-digital conversion, and the digital signals are sent to the master control chip to be processed. The master control chip sends data to a centralized control bench and also determines environmental parameters, and drives the alarming and control module to carry out corresponding actions if an early-warning value or an alarming value of an environment appears. A DM9000 is adopted by an Ethernet control chip, and 10/100Mbps dual-network-interface-card redundancy is completed through a dual-channel design. The space of an aircraft carrier is saved, the workload of warship support staff is minimized, and the fuel oil supplying efficiency is higher.

Description

Based on the pump room environmental detection set of Ethernet

Art

the present invention relates to a kind of pump room environmental detection set based on Ethernet, the new-type pump room environmental detection set that especially refueling terminal controls and oiling circumstance monitoring merges.

Background technology

in traditional carrier-borne aircraft fuel oil supply process, refueling terminal control system and oiling circumstance supervisory system independently exist, and have both added complicacy and operating personnel's quantity of operation, have wasted again the system space resource of refuelling station's preciousness.Along with above water craft field apparatus informationization and and networking degree improve constantly, traditional bus mode transmission drawback also reveals gradually, and first it can not interconnect with Internet, can not realize remote information and share.Secondly, it can not with upper control machine direct interface, it is all expensive that existing bus interface card compares Ethernet.That its communication distance or traffic rate all cannot be compared with Ethernet in addition.Ethernet, as current most widely used general LAN protocol, has that protocol hierarchy is complete, data transmission rate is high and the feature such as communication reliability is strong, and can adapt to different physical transmission mediums.Ethernet technology is applied in Industry Control, the distribution of industrial field device, intelligentized control method can be realized, realize enterprise's comprehensive information integration & share from workshop to administration and supervision authorities.

along with above water craft field apparatus informationization and and networking degree improve constantly, for adapting to the needs of helicopter fuel oil supply under the new situation, be necessary to improve traditional helicopter fuel oil make-up system, to reduce the complexity of fuel oil supply operation, save system space resource, design intelligence degree is higher, reliability is higher, speed pump room environmental monitoring installation faster.

Summary of the invention

the object of the invention is to design a kind of pump room environmental detection set based on Ethernet.The design can detect the environmental parameters such as oil pipeline inlet pressure, combustable gas concentration and temperature by pump room environmental monitoring installation, the light that can realize home environment is reported to the police, and the information of native system is uploaded to fuel loading system centralized control room carries out monitoring and to whole system optimal control by ethernet communication.

the object of the present invention is achieved like this:

the present invention is made up of power module, environment monitoring module, warning and control module, ethernet communication module, parameter memory module.Wherein control chip selects ARMLPC2294; Total 1.8VDC, 3.3VDC, 5VDC, positive and negative 12V and 24VDC five kinds of direct supplys in power supply mainboard, wherein 24V, positive and negative 12V and 5V direct supply model are DAS15-24-N, DAT15-05V12-NFCI and DAD05-12-N respectively, and another one power module 24V is to sensor power; Ethernet controller selects DM9000E chip, and SD0-SD15 pin is connected to the data bus D0 ~ D15 of LPC2294, and address wire pin A4 ~ A9 only makes chip select signal, with chip selection signal ANE (Low level effective), and the enable DM9000 of acting in conjunction; The Physical layer of M9000E sends and receiving port TXO+, TXO-, RXI+, RXI-receive RJ45 interface through network transformer chip HR601680; Adopt two kinds of isolation methods, a kind of is that chip and inter-chip signals adopt 7,4HC,245 eight bus transceiver and 74LVC245A to realize the effect of isolation signals, and another kind is exactly the Phototube Coupling of internal chip enable signal and outside on-site signal; Phototube Coupling has 6 road signals, is the alerting signal (ALARM1, ALARM2 and ALARM3) of three road pressure respectively, the modulating signal of the alerting signal (NET1_CTR and NET2_CTR) of two-way network interface and normally work (WORK); Alarm and control signal judges to realize by software, by Phototube Coupling by ALARM1, ALARM2, ALARM3, WORK, NET1_CTR and NET2_CTR signal respectively with the P1.16 of LPC2294, P1.17, P1.18, P1.19, P1.21, P1.22 mouth is connected.

design feature of the present invention and beneficial effect:

1, this invention is for pump room environmental monitoring, refueling terminal control system and oiling circumstance supervisory system is merged, reduces complicacy and operating personnel's quantity of operation, in turn save filling station system space resources.

2, this invention adopts Ethernet as general LAN protocol, the feature such as have that protocol hierarchy is complete, data transmission rate is high and communication reliability is strong, and can adapt to different physical transmission mediums.

Accompanying drawing explanation

fig. 1 is pump room environmental detection set theory diagram of the present invention;

fig. 2 is system principle structural drawing of the present invention;

fig. 3 is ethernet interface circuit schematic diagram.

Embodiment

below in conjunction with accompanying drawing, principle of the present invention and concrete annexation are described in more detail:

composition graphs 1, Fig. 1 is pump room environmental detection set theory diagram of the present invention; The present invention is made up of power module, environment monitoring module, warning and control module, ethernet communication module, parameter memory module; Cross pump room environmental monitoring installation and can detect the environmental parameters such as oil pipeline inlet pressure, combustable gas concentration and temperature, the light that can realize home environment is reported to the police, and the information of native system is uploaded to fuel loading system centralized control room carries out monitoring and to whole system optimal control by ethernet communication.

fig. 2 is system principle structural drawing of the present invention.Comprise: ARMLPC2294 is the main control chip of core, carries out ICP/IP protocol encapsulation, resolve and conversion etc. realizes ethernet data communication; Select a slice 16KB dynamic storage, be used for storage system relative program and data; Power circuit mainly provides 5V, 3.3V, 1.8V direct supply; When the server etc. of clock circuit and communication carries out pair, provide a time reference standard to system, system crystal oscillator frequency is 11.0592MHz; Ethernet interface circuit is by address decoding chip, and ethernet mac controller and network isolation transformer composition realize ethernet communication.

fig. 3 is ethernet interface circuit schematic diagram; The SD0-SD15 pin of DM9000E chip is connected to the data bus D0 ~ D15 of LPC2294.Address wire pin A4 ~ A9 only makes chip select signal, with chip selection signal ANE (Low level effective), and the enable DM9000 of acting in conjunction.When ANE, SA4 ~ SA7 is low level, when SA8, SA9 are high level, DM9000 is selected, therefore SA4 ~ SA7 ground connection, SA8, SA9 connect 3.3V power supply, the ANE of two panels receives 3 and 6 two output pins of 74AC32 respectively, and its input pin is respectively CS3, A22 and CS3, the A23 of LPC2294; CMD connects A2, passes data, during low level by reference during high level; The Physical layer of DM9000E sends and receiving port TXO+, TXO-, RXI+, RXI-receive RJ45 interface through network transformer chip HR601680.

Claims

1. based on a pump room environmental detection set for Ethernet, it is characterized in that: this system is made up of power module, environment monitoring module, warning and control module, ethernet communication module, parameter memory module; Control chip selects ARMLPC2294; Total 1.8VDC, 3.3VDC, 5VDC, positive and negative 12V and 24VDC five kinds of direct supplys, wherein 24V, positive and negative 12V and 5V in power supply mainboard, another one power module 24V is to sensor power; Ethernet controller selects DM9000E chip.

2. ethernet controller according to claim 1 selects DM9000E chip, it is characterized in that: described direct supply model is DAS15-24-N, DAT15-05V12-NFCI and DAD05-12-N respectively.

3. ethernet controller according to claim 1 selects DM9000E chip, it is characterized in that: in described ethernet controller DM9000E chip, SD0-SD15 pin is connected to the data bus D0 ~ D15 of LPC2294, address wire pin A4 ~ A9 only makes chip select signal, with chip selection signal ANE, the enable DM9000 of acting in conjunction; The Physical layer of M9000E sends and receiving port TXO+, TXO-, RXI+, RXI-receive RJ45 interface through network transformer chip HR601680.

4. ethernet controller according to claim 1 selects DM9000E chip, it is characterized in that: adopt two kinds of isolation methods, (1) chip and inter-chip signals adopt 7,4HC,245 eight bus transceiver and 74LVC245A to realize the effect of isolation signals; (2) Phototube Coupling of internal chip enable signal and outside on-site signal; Phototube Coupling has 6 road signals, is the alerting signal (ALARM1, ALARM2 and ALARM3) of three road pressure respectively, the modulating signal of the alerting signal (NET1_CTR and NET2_CTR) of two-way network interface and normally work (WORK); Alarm and control signal judges to realize by software, by Phototube Coupling by ALARM1, ALARM2, ALARM3, WORK, NET1_CTR and NET2_CTR signal respectively with the P1.16 of LPC2294, P1.17, P1.18, P1.19, P1.21, P1.22 mouth is connected.