CN204101925U - A kind of hydrology detection and control terminal based on ARM - Google Patents
A kind of hydrology detection and control terminal based on ARM Download PDFInfo
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- CN204101925U CN204101925U CN201420348309.5U CN201420348309U CN204101925U CN 204101925 U CN204101925 U CN 204101925U CN 201420348309 U CN201420348309 U CN 201420348309U CN 204101925 U CN204101925 U CN 204101925U
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Abstract
The utility model relates to a kind of hydrology detection and control terminal based on ARM, described terminal take microprocessor unit as core, connect power management module, storer, touch-screen and transmission unit, described transmission unit comprises Gray code interface circuit and wireless transport module, described Gray code interface circuit connecting sensor.Solving hydrology observing and controlling on existing market take all single-chip microcomputer as Platform Designing eventually mostly, is limited to processing speed, image-capable factor, causes man-machine interface not too friendly and cannot the defect such as remote upgrade program.
Description
Technical field
The present invention relates to data acquisition telemetry terminal system field, be specifically related to a kind of hydrology detection and control terminal.
Background technology
Existing hydrology detection and control terminal can be divided into two kinds of citation forms, i.e. self-reporting type and response formula.Self-reporting type's hydrology detection and control terminal is that telemetry station sends information to data acquisition center at random according to the change of telemetry parameter; Response formula hydrology detection and control terminal is that telemetry station sends Information Monitoring according to the order of server.Self-reporting type's hydrology detection and control terminal can be divided into again:
1) in real time from report: when occurring when there being external event and reach the value of setting, immediately data are sent to central station;
2) timing is from report: survey station from report once, sends hydrographic data current for our station at regular intervals;
3) call together and observe and predict: server can send call together to survey station at any time surveys order, and survey station can return current hydrographic data immediately.
Because the hydrology observing and controlling on market take all single-chip microcomputer as Platform Designing eventually mostly, be limited to processing speed, image-capable factor, cause following two point defects:
1) man-machine interface is not too friendly, is lattice lcd+keystroke pattern substantially;
2) cannot remote upgrade program, this function is wanted to change requirement client, and is even more important when equipment has been arranged on scene.
For this reason, the hydrology detection and control terminal that a kind of function is more perfect need be designed, to meet the new demand on market.
Summary of the invention
For solving prior art Problems existing, the invention provides a kind of hydrology detection and control terminal based on ARM, described terminal take microprocessor unit as core, connect power management module, storer, touch-screen and transmission unit, described transmission unit comprises Gray code interface circuit and wireless transport module, described Gray code interface circuit connecting sensor.
Described sensor comprises level sensor, flow sensor, Temperature Humidity Sensor, baroceptor, rain sensor etc.
Described microprocessor unit is connected with server by Modem module, be connected by RS232 bus between microprocessor unit with Modem module, Modem module is communicated by Internet with server, and described server is used for transmitting upgrade information with microprocessor unit.
Described microprocessor unit is preferably microprocessor S3C2440.
The present invention with microprocessor S3C2440 for core, comprise the circuit such as signal transducer, data conditioning, A/D conversion, touch-screen, radio communication, clock, can remote upgrade, also Consumer's Experience can be strengthened in conjunction with friendly man-machine interface, solve the defect of prior art, in addition, following beneficial effect is also comprised:
That the core processor of S3C2440 adopts is ARM920T, belongs to risc processor, achieves MMU, AMBA BUS and Harvard cache hierarchy structure.This structure has independently 16KB Instruction Cache and 16KB data Cache.Each row by having 8 word lengths forms.By providing the general-purpose system peripheral hardware of complete set, S3C2440 reduces total system cost and without the need to configuring extra assembly.Have five kinds of mode of operations, wherein power-down mode is least in power-consuming, is less than 1MA, is applicable to solar powered requirement.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of a kind of hydrology detection and control terminal based on ARM of the present invention;
Fig. 2 is temperature and humidity measurement circuit diagram;
Fig. 3 is rainfall measurement circuit theory diagrams;
Embodiment
Below in conjunction with accompanying drawing, with embodiment one, the present invention will be further described:
Embodiment one:
A kind of hydrology detection and control terminal based on ARM provided by the invention mainly carries out acquisition and processing to Hydrologic Information, and makes accurate forecast and scheduling.System have employed the sensor such as water level, rainfall, after signal condition, analog to digital conversion, send microprocessor S3C2440 process, achieves the collection of hydrologic regime data.Utilize the GPRS service provided in mobile communications network to carry out the transmission of Hydrologic Information, the information transmission for regimen system provides a kind of effective method.
Concrete technical scheme is as follows:
A kind of hydrology detection and control terminal based on ARM, described terminal take microprocessor unit as core, connect power management module, storer, touch-screen and transmission unit, described transmission unit comprises Gray code interface circuit and wireless transport module, described Gray code interface circuit connecting sensor.
Described sensor comprises level sensor, flow sensor, Temperature Humidity Sensor, baroceptor, rain sensor etc.
Described microprocessor unit is connected with server by Modem module, be connected by RS232 bus between microprocessor unit with Modem module, Modem module is communicated by Internet with server, and described server is used for transmitting upgrade information with microprocessor unit.
Described microprocessor unit is preferably microprocessor S3C2440.
System is with microprocessor S3C2440 for core, and comprise the circuit such as signal transducer, data conditioning, A/D conversion, touch-screen, radio communication, clock, system architecture as shown in Figure 1.
That the core processor of S3C2440 adopts is ARM920T, belongs to risc processor, achieves MMU, AMBA BUS and Harvard cache hierarchy structure.This structure has independently 16KB Instruction Cache and 16KB data Cache.Each row by having 8 word lengths forms.By providing the general-purpose system peripheral hardware of complete set, S3C2440 reduces total system cost and without the need to configuring extra assembly.Have five kinds of mode of operations, wherein power-down mode is least in power-consuming, is less than 1MA, is applicable to solar powered requirement.
System needs to survey the regimen correlation parameters such as water level, rainfall, flow, temperature, air pressure, and the output quantity of respective sensor has analog quantity, digital quantity, frequency quantity etc.
1) level sensor adopts the ultrasonic water level gauge of south control, and its output signal is 485 digital quantities, directly by 485 chip collections;
2) flow sensor is with using HR series vortex flow sensors, and the outputting standard magnitude of current, needs, by IV switched telephone road, it is converted to voltage signal, then send AD converter after amplifying.
3) temperature and humidity measurement adopts thermal resistance sensor, because distance is shorter, can adopt TW two wire method of attachment.Connect to electric bridge form to improve sensitivity, adopt the excitation of+5V reference voltage.Output signal send analog to digital converter again after amplifying, and concrete metering circuit as shown in Figure 2.
4) baroceptor adopts KYC01 series absolute pressure sensor, and it adopts high precision, the non-isolated pressure sensor assembly of high stability, is compensated form by precision temperature.
5) rain sensor adopts tilting bucket rain, and it exports as switching value.In order to by switching signal input processor, will carry out the process such as Isolation to signal, convert the receptible logical signal of processor to, Fig. 3 is schematic diagram, when switching node disconnects, exports as high level, is low level when node closes.In figure, R6 resistance gets up to prevent by the effect of moisture-induced leakage current, and wherein R10, C10 play stabilization and jamproof effect, and last processor carries out counting and forms rainfall data.
Storer of the present invention adopts Nand-flash, is the one of flash internal memory, the non-linear macroelement pattern of its inner employing, and the realization for solid-state large-capacity internal memory provides cheap effective solution.It is larger that Nand-flash storer has capacity, the advantages such as rewriting speed is fast, be applicable to the storage of mass data, thus in the industry cycle obtain and apply more and more widely, as embedded product comprises the USB flash disk etc. of digital camera, MP3 walkman memory card, compact.
Wireless transport module of the present invention adopts Huawei GTM900-C module, utilizes GPRS to surf the Net, and is all that the PPP server by calling out fixed number carries out handshake authentication, and the configuration of agreement, and after having shaken hands, ppp link is set up.Be exactly IP layer on link layer, on IP layer, optional agreement mainly contains the udp protocol that connection-oriented Transmission Control Protocol is connected with not face, and Transmission Control Protocol implements more complicated.Udp protocol does not have the guarantee of reliability, but it is less to the load of network, and be relatively applicable to the transmission of real time data, this system is not too high to the reliability requirement of data, is relatively applicable to selecting udp protocol.
The present invention adopts 3.5 cun of touch-screens, and support black and white, 4 grades of gray scales, 16 grades of gray scales, 256 looks, 4096 look stn liquid crystal screens, screen resolution can reach 1024x768 pixel.Coordinate LINUX kernel, and driver, man-machine interface can be made to become very friendly, facilitate new hand to grasp operation steps fast.
The present invention with the S3C2440ARM microprocessor of Samsung for platform, with Keil MDK for developing instrument.This programme uses multiple calibration technology, ensures the correctness of transmission data to greatest extent; Use bootloader mechanism, even if cause and upgrade unsuccessfully because of unscheduled event (power-off, programming Flash unsuccessfully etc.), program also can turn back to the state before upgrading.
Claims (3)
1. the hydrology detection and control terminal based on ARM, it is characterized in that, described terminal take microprocessor unit as core, connect power management module, storer, touch-screen and transmission unit, described transmission unit comprises Gray code interface circuit and wireless transport module, described Gray code interface circuit connecting sensor; Described sensor comprises level sensor, flow sensor, Temperature Humidity Sensor, baroceptor and rain sensor.
2. a kind of hydrology detection and control terminal based on ARM according to claim 1, it is characterized in that, described microprocessor unit is connected with server by Modem module, be connected by RS232 bus between microprocessor unit with Modem module, Modem module is communicated by Internet with server, and described server is used for transmitting upgrade information with microprocessor unit.
3. a kind of hydrology detection and control terminal based on ARM according to claim 1 and 2, it is characterized in that, described microprocessor unit is microprocessor S3C2440.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420348309.5U CN204101925U (en) | 2014-06-26 | 2014-06-26 | A kind of hydrology detection and control terminal based on ARM |
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| CN201420348309.5U CN204101925U (en) | 2014-06-26 | 2014-06-26 | A kind of hydrology detection and control terminal based on ARM |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122815A (en) * | 2014-06-26 | 2014-10-29 | 南京易周能源科技有限公司 | Hydrological measurement and control terminal based on ARM and remote upgrading method thereof |
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- 2014-06-26 CN CN201420348309.5U patent/CN204101925U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122815A (en) * | 2014-06-26 | 2014-10-29 | 南京易周能源科技有限公司 | Hydrological measurement and control terminal based on ARM and remote upgrading method thereof |
| CN104122815B (en) * | 2014-06-26 | 2017-07-04 | 南京易周能源科技有限公司 | A kind of method of hydrology detection and control terminal and its remote upgrade based on ARM |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Hydrological measurement and control terminal based on ARM and remote upgrading method thereof Effective date of registration: 20200701 Granted publication date: 20150114 Pledgee: Jiangsu Zijin rural commercial bank Limited by Share Ltd. branch of science and technology Pledgor: NANJING YIZHOU ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2020980003677 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210917 Granted publication date: 20150114 Pledgee: Jiangsu Zijin rural commercial bank Limited by Share Ltd. branch of science and technology Pledgor: NANJING YIZHOU ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2020980003677 |
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Effective date of registration: 20231008 Granted publication date: 20150114 |