CN203732929U - Energy source data acquisition terminal - Google Patents

Energy source data acquisition terminal Download PDF

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Publication number
CN203732929U
CN203732929U CN201420132073.1U CN201420132073U CN203732929U CN 203732929 U CN203732929 U CN 203732929U CN 201420132073 U CN201420132073 U CN 201420132073U CN 203732929 U CN203732929 U CN 203732929U
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CN
China
Prior art keywords
pin
connects
module
energy source
at91rm9200
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Expired - Fee Related
Application number
CN201420132073.1U
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Chinese (zh)
Inventor
张发汉
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East Fujian Long-Range Instrument Co Ltd
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East Fujian Long-Range Instrument Co Ltd
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Priority to CN201420132073.1U priority Critical patent/CN203732929U/en
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Publication of CN203732929U publication Critical patent/CN203732929U/en
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Abstract

The utility model discloses an energy source data acquisition terminal which comprises a CPU module, a pressure sensing module, a flow sensing module, an analog-digital AD conversion module, an Ethernet interface, an RS232 interface, an infrared module, a USB interface, a key input module, and a liquid crystal display screen. The CPU module utilizes an AT91RM9200-type embedded ARM microprocessor which is produced by an ATMEL company. A pressure sensor of the pressure sensing module and a flowmeter of the flow sensing module utilize devices with 4-20 mA standard current signal output ports. The output end of the AD conversion module is connected with the SPI input end of the AT91RM9200-type microprocessor. According to the energy source data acquisition terminal, through the utilization of the high-performance embedded ARM microprocessor, multichannel energy source data acquisition can be realized by utilizing a relatively-simple structure and the data processing precision is improved.

Description

A kind of energy source data acquisition terminal
Technical field
The utility model belongs to energy monitoring equipment technical field, relates to especially a kind of energy source data acquisition terminal.
Background technology
Energy source data acquisition terminal is for the analog signalses such as the pressure of collecting device and flow, switch, start-stop, the switching value signals such as warning.Along with the development of infotech and electronic technology, the performance of energy source data acquisition terminal has also been had to more and more higher demand.But in prior art, energy data acquisition device adopts singlechip technology to form embedded system, the collection of settling signal, analyzing and processing and demonstration more.Owing to being subject to the restriction of single-chip microcomputer performance, exist data acquisition channel few, the problem that data processing precision is not high more.And because the scalability of single-chip microcomputer is not good, cause the bad adaptability of circuit.
Therefore, for the above-mentioned defect existing in currently available technology, be necessary to study in fact, so that a kind of scheme to be provided, solve the defect existing in prior art, avoid causing energy source data acquisition terminal problem of the prior art, the problem includes: data processing precision is not high and the problem of bad adaptability.
Utility model content
For addressing the above problem, the purpose of this utility model is to provide a kind of energy source data acquisition terminal, in order to by adopting high performance embedded-type ARM microprocessor, make to adopt comparatively simple structure can realize multichannel energy Source Data Acquisition and improve data processing precision.
For achieving the above object, the technical solution of the utility model is:
A kind of energy source data acquisition terminal, comprise CPU module, pressure sensitive module, flow sensing module, modulus AD modular converter, Ethernet interface, RS232 interface, infrared module, USB interface, keyboard input module, LCDs, the embedded-type ARM microprocessor that the model that described CPU module adopts atmel corp to produce is AT91RM9200, the flowmeter of the pressure transducer of described pressure sensitive module and flow sensing module adopts the device of the standard current signal output port with 4~20mA, the standard current signal output terminal of described pressure transducer inputs to the first operational amplifier after being connected in series the first pull-up resistor, the output terminal of the first operational amplifier connects AD modular converter Yi road input end, the standard current signal output terminal of flowmeter inputs to the second operational amplifier after being connected in series the second pull-up resistor, the output terminal of the second operational amplifier connects another road input end of AD modular converter, the output terminal of AD modular converter connects the SPI input end of AT91RM9200, described Ethernet interface, RS232 interface, infrared module, USB interface connects Ethernet interface corresponding to AT91RM9200, RS232 interface, infrared module, USB interface end, the output terminal of the described keyboard input module arranging for the parameter of energy source data acquisition terminal connects the input end of AT91RM9200 by universal serial bus, the output terminal of described AT91RM9200 is connected and is used for showing parameter, current pressure and the data on flows of setting, the described LCD MODULE of the value of energy source signal by universal serial bus.
Preferably, described AD modular converter adopts the A/D converter AD73360 of 16, six passage.
Preferably, the 1st pin VINP2 of described AD73360 is connected the output terminal of the first operational amplifier as a road input end with the 2nd pin VINN1; The 3rd pin VINP1 is connected the output terminal of the second operational amplifier as another road input end with the 4th pin VINN1; The first capacitor C 1 of the 6th pin REFCAP serial connection one end ground connection; The 7th pin ADD2 connects 3.3V power supply simultaneously and connects the second capacitor C 2 of one end ground connection; The first resistance R 1 of the 8th pin AGND2 serial connection one end ground connection; The 9th pin DGND ground connection; The 10th pin DVDD also connects the 3rd capacitor C 3 of one end ground connection and the second resistance R 2 that the 4th capacitor C 4 is connected in series a termination 3.3V power supply simultaneously, the 3rd resistance and the 5th capacitances in series, the other end of the 3rd resistance connects 3.3V power supply, and the 5th electric capacity other end connects the earth terminal of the 3rd electric capacity and the 4th electric capacity; The 11st pin RESET connects the 4th resistance while of a termination 3.3V voltage and connects the 6th electric capacity of one end ground connection; The 13rd pin MCLK connects the 7th electric capacity of one end ground connection; The 14th pin connects the PA1 pin of AT91RM9200; The 17th pin connects the PA0 pin of AT91RM9200; The 18th pin SE is connected in series the 5th resistance of a termination 3.3V power supply; The 20th pin AVDD1 connects 3.3V power supply and is connected in series the 8th electric capacity and the 9th electric capacity of one end ground connection.
Compared with prior art, the utlity model has following beneficial effect:
(1) by adopting high performance embedded-type ARM microprocessor AT91RM9200, by simple peripheral circuit, can realize multichannel data acquisition, improve the processing accuracy of energy source data;
(2) adopt the AD modular converter of modular design, when the energy source data that system is detected at need changes, only need corresponding interpretive model be set in CPU module can obtain corresponding energy signal, and without the change of carrying out on hardware, adaptability is good.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the energy source data acquisition terminal of the utility model embodiment;
Fig. 2 is the circuit pin block diagram of AT91RM9200PQFP embedded-type ARM microprocessor of CPU module of the energy source data acquisition terminal of the utility model embodiment;
Fig. 3 is the circuit diagram of AD modular converter of the energy source data acquisition terminal of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
On the contrary, the utility model contain any by claim, defined in marrow of the present utility model and scope, make substitute, modification, equivalent method and scheme.Further, for the public is had a better understanding to the utility model, in below details of the present utility model being described, detailed some specific detail sections of having described.Do not have for a person skilled in the art the description of these detail sections can understand the utility model completely yet.
Referring to Fig. 1 and Fig. 2, wherein Figure 1 shows that the energy source data acquisition terminal of the utility model embodiment, Fig. 2 is the circuit pin block diagram of the AT91RM9200PQFP embedded-type ARM microprocessor of CPU module employing, the energy source data acquisition terminal of the utility model embodiment comprises CPU module 101, pressure sensitive module 102, flow sensing module 103, modulus AD modular converter 105, Ethernet interface 104, RS232 interface 106, infrared module 107, usb 1 08, keyboard input module 109, LCDs 110, the embedded-type ARM microprocessor that the model that CPU module 101 adopts atmel corp to produce is AT91RM9200, the flowmeter of the pressure transducer of pressure sensitive module 102 and flow sensing module 103 adopts the device of the standard current signal output port with 4~20mA.Wherein pressure sensitive module 102 comprises pressure transducer, the first pull-up resistor and the first operational amplifier, the standard current signal output terminal of pressure transducer inputs to the first operational amplifier after being connected in series the first pull-up resistor, the output terminal of the first operational amplifier connects AD modular converter Yi road input end, the standard current signal output terminal of flow sensing module 103 flowmeters inputs to the second operational amplifier after being connected in series the second pull-up resistor, the output terminal of the second operational amplifier connects another road input end of AD modular converter, the output terminal of AD modular converter connects the SPI input end of AT91RM9200, Ethernet interface, RS232 interface, infrared module, USB interface connects Ethernet interface corresponding to AT91RM9200, RS232 interface, infrared module, USB interface end, the output terminal of the keyboard input module arranging for the parameter of energy source data acquisition terminal connects the input end of AT91RM9200 by universal serial bus, the output terminal of AT91RM9200 is connected and is used for showing parameter, current pressure and the data on flows of setting, the described LCD MODULE of the value of energy source signal by universal serial bus.Its course of work is as follows: wherein RS232 interface 106, infrared module 107, usb 1 08 is for this locality debugging of energy source data acquisition terminal, , Ethernet interface for the mode by wire transmission to the remote data server uploading data on Intemet, pressure sensitive module is for source data signals comprising vapour, gas, the collection of the standard current signal of oil, flow sensing module is for the flow collection of energy source data signals, AD modular converter is for converting the current signal of pressure and flow to voltage signal, CPU module is for recording the voltage signal of the pressure collecting and flow and process, mainly that pressure signal and flow signal are carried out, after product, time integral is multiplied by a constant again, can source data signals thereby obtain.
Above Ethernet interface, RS232 interface, infrared module, keyboard input module and LCD MODULE can realize by general module of the prior art, in the utility model, will not repeat.
In a concrete application example, AD modular converter adopts the A/D converter AD73360 of 16, six passage.Shown in Figure 3 is the circuit diagram of the AD modular converter of AD modular converter, and the 1st pin VINP2 of AD73360 is connected the output terminal of the first operational amplifier as a road input end with the 2nd pin VINN1; The 3rd pin VINP1 is connected the output terminal of the second operational amplifier as another road input end with the 4th pin VINN1; The first capacitor C 1 of the 6th pin REFCAP serial connection one end ground connection; The 7th pin ADD2 connects 3.3V power supply simultaneously and connects the second capacitor C 2 of one end ground connection; The first resistance R 1 of the 8th pin AGND2 serial connection one end ground connection; The 9th pin DGND ground connection; The 10th pin DVDD also connects the 3rd capacitor C 3 of one end ground connection and the second resistance R 2 that the 4th capacitor C 4 is connected in series a termination 3.3V power supply simultaneously, the 3rd resistance R 3 is connected with the 5th capacitor C 5, the other end of the 3rd resistance R 3 connects 3.3V power supply, and the 5th capacitor C 5 other ends connect the earth terminal of the 3rd capacitor C 3 and the 4th capacitor C 4; The 11st pin RESET connects the 4th 4 whiles of resistance R of a termination 3.3V voltage and connects the 6th capacitor C 6 of one end ground connection; The 13rd pin MCLK connects the 7th capacitor C 7 of one end ground connection; The 14th pin connects the PA1 pin of AT91RM9200; The 17th pin connects the PA0 pin of AT91RM9200; The 18th pin SE is connected in series the 5th resistance R 5 of a termination 3.3V power supply; The 20th pin AVDD1 connects 3.3V power supply and is connected in series the 8th capacitor C 8 and the 9th capacitor C 9 of one end ground connection.AD73360 has six passage A/D converters, the equal synchronized sampling of each passage with guarantee interchannel hardly life period (phase place) postpone, therefore applicable multichannel analog input.By the AD modular converter of above setting, can convert pressure signal and flow signal to CPU module accessible signal.
The energy source data acquisition terminal more than arranging, by adopting the AT91RM9200 of the system building around ARM920T ARM Thumb processor completely, AT91RM9200 has abundant system and the interface of applying peripheral hardware and standard, thereby the solution of a kind of low-power consumption, low cost, high-performance monolithic energy source data acquisition terminal is provided.AT91RM9200 is integrated many standard interfaces, comprise USB2.0 at full speed main frame and device port and with most peripheral hardwares with in the widely used 10/100Base-T Ethernet of network layer MAC controller (MAC), in addition, it also provides a series of peripheral hardwares that meet industrial standard, can in audio frequency, telecommunications, the outside line of F1ash carminum and smart card, use, make conveniently to add RS232 interface 106 as above, infrared module 107, usb 1 08, GPRS module 105 and Ethernet interface 104.The energy source data acquisition terminal arranging by above employing AT91RM9200, circuit structure is simple, and data processing function is powerful.
In a concrete application example, the energy source data acquisition terminal of the utility model embodiment is exerted oneself for gathering the actual of water pump, AD modular converter one tunnel gathers the pressure of water pump water outlet, one tunnel is for gathering the flow of water pump water outlet, according to the pressure of water pump water outlet and flow, CPU inside modules calculates exerting oneself of water pump water outlet, is also actual energy of exerting oneself, and can obtain the energy signal of water pump.
In another concrete application example, be applied to the energy source data acquisition terminal that blower fan is exerted oneself, flowmeter adopts the vortex precession flowmeter with the output of 4-20mA standard current signal to carry out the detection of air mass flow, those skilled in that art it should be understood that, in addition, as adopt orifice plate to add differential flow converter, vortex shedding flow meter, Annular Round Model PFB, thermal gas flowmeter, the flowmeter that is applicable to air mass flow detection that mass flowmeter has the output of 4-20mA standard current signal can be used in the utility model embodiment.Pressure transducer is used for measuring the air pressure of blower fan, AD modular converter one tunnel gathers the flow signal of flowmeter, one tunnel is used for gathering pressure signal, and CPU inside modules is carried out time integral and is multiplied by efficiency constant by flow and pressure, can obtain the energy signal that blower fan is exerted oneself.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.

Claims (3)

1. an energy source data acquisition terminal, comprise CPU module, pressure sensitive module, flow sensing module, modulus AD modular converter, Ethernet interface, RS232 interface, infrared module, USB interface, keyboard input module, LCDs, it is characterized in that, the embedded-type ARM microprocessor that the model that described CPU module adopts atmel corp to produce is AT91RM9200, the flowmeter of the pressure transducer of described pressure sensitive module and flow sensing module adopts the device of the standard current signal output port with 4~20mA, the standard current signal output terminal of described pressure transducer inputs to the first operational amplifier after being connected in series the first pull-up resistor, the output terminal of the first operational amplifier connects AD modular converter Yi road input end, the standard current signal output terminal of flowmeter inputs to the second operational amplifier after being connected in series the second pull-up resistor, the output terminal of the second operational amplifier connects another road input end of AD modular converter, the output terminal of AD modular converter connects the SPI input end of AT91RM9200, described Ethernet interface, RS232 interface, infrared module, USB interface connects Ethernet interface corresponding to AT91RM9200, RS232 interface, infrared module, USB interface end, the output terminal of the described keyboard input module arranging for the parameter of energy source data acquisition terminal connects the input end of AT91RM9200 by universal serial bus, the output terminal of described AT91RM9200 is connected and is used for showing parameter, current pressure and the data on flows of setting, the described LCD MODULE of the value of energy source signal by universal serial bus.
2. energy source data acquisition terminal according to claim 1, is characterized in that, described AD modular converter adopts the A/D converter AD73360 of 16, six passage.
3. energy source data acquisition terminal according to claim 2, is characterized in that, the 1st pin VINP2 of described AD73360 is connected the output terminal of the first operational amplifier as a road input end with the 2nd pin VINN1; The 3rd pin VINP1 is connected the output terminal of the second operational amplifier as another road input end with the 4th pin VINN1; The first capacitor C 1 of the 6th pin REFCAP serial connection one end ground connection; The 7th pin ADD2 connects 3.3V power supply simultaneously and connects the second capacitor C 2 of one end ground connection; The first resistance R 1 of the 8th pin AGND2 serial connection one end ground connection; The 9th pin DGND ground connection; The 10th pin DVDD also connects the 3rd capacitor C 3 of one end ground connection and the second resistance R 2 that the 4th capacitor C 4 is connected in series a termination 3.3V power supply simultaneously, the 3rd resistance and the 5th capacitances in series, the other end of the 3rd resistance connects 3.3V power supply, and the 5th electric capacity other end connects the earth terminal of the 3rd electric capacity and the 4th electric capacity; The 11st pin RESET connects the 4th resistance while of a termination 3.3V voltage and connects the 6th electric capacity of one end ground connection; The 13rd pin MCLK connects the 7th electric capacity of one end ground connection; The 14th pin connects the PA1 pin of AT91RM9200; The 17th pin connects the PA0 pin of AT91RM9200; The 18th pin SE is connected in series the 5th resistance of a termination 3.3V power supply; The 20th pin AVDD1 connects 3.3V power supply and is connected in series the 8th electric capacity and the 9th electric capacity of one end ground connection.
CN201420132073.1U 2014-03-24 2014-03-24 Energy source data acquisition terminal Expired - Fee Related CN203732929U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104089662A (en) * 2014-07-28 2014-10-08 成都千嘉科技有限公司 Pressure acquisition system based on flow measurement device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104089662A (en) * 2014-07-28 2014-10-08 成都千嘉科技有限公司 Pressure acquisition system based on flow measurement device

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CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140723

Termination date: 20170324