CN203732091U

CN203732091U - Energy efficiency data acquisition terminal

Info

Publication number: CN203732091U
Application number: CN201420133177.4U
Authority: CN
Inventors: 张发汉
Original assignee: East Fujian Long-Range Instrument Co Ltd
Current assignee: East Fujian Long-Range Instrument Co Ltd
Priority date: 2014-03-24
Filing date: 2014-03-24
Publication date: 2014-07-23
Anticipated expiration: 2024-03-24

Abstract

The utility model discloses an energy efficiency 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, a liquid crystal display screen and an electric quantity acquisition module. 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. The electric quantity acquisition and energy source data acquisition of the device are carried out simultaneously in the same high-performance embedded ARM microprocessor, so that the energy efficiency of the device can be obtained simultaneously when the electric quantity and the energy source data are collected.

Description

A kind of energy-efficiency data acquisition terminal

Technical field

The utility model belongs to energy monitoring equipment technical field, relates to especially a kind of energy-efficiency data acquisition terminal.

Background technology

Efficiency refers to that equipment is actual and exerts oneself and the ratio of the energy of actual consumption.It and equipment self efficiency, the factors such as working point, transmission loss are relevant.Existing realization in technology, can be by measuring equipment power consumption and equipment are exerted oneself respectively, again equipment power consumption and equipment are exerted oneself and is concentrated to the processing that certain server is concentrated, such processing mode can make efficiency data acquisition real-time not, and for server, because process a large amount of data, there is the not high problem of efficiency and accuracy.For the Real-time Collection of realizing efficiency, difficult point is equipment energy Source Data Acquisition, comparatively ripe for the acquisition technique of electric weight.

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 the directly problem of collecting device efficiency data.

Utility model content

For addressing the above problem, the purpose of this utility model is to provide a kind of energy-efficiency data acquisition terminal, in order to pass through employing, the electric quantity acquisition of equipment and energy Source Data Acquisition are processed on same high performance embedded-type ARM microprocessor simultaneously, made at collection electric weight and can in source data, can carry out obtaining of energy efficiency of equipment.

For achieving the above object, the technical solution of the utility model is:

A kind of energy-efficiency 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, and electric quantity acquisition module, 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 electric current that electric quantity acquisition module gathers is connected with the input end of AT91RM9200 with voltage signal, the output terminal of the described keyboard input module arranging for the parameter of energy-efficiency data acquisition terminal connects the input end of AT91RM9200 by universal serial bus, the output terminal of described AT91RM9200 by universal serial bus connect parameter, current pressure and data on flows for showing setting, can source signal the described LCD MODULE of value.

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 4th capacitor C 4 is connected in series the second resistance R 2 of 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, can realize the processing accuracy of multichannel data acquisition and raising energy source data by simple peripheral circuit;

(2) the AD modular converter of employing 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, without the change of carrying out on hardware;

(3) collection that the similar AD modular converter of AD modular converter using in employing and energy data acquisition module obtains electric quantity data, makes the realization of circuit structure more simple;

(4) energy efficiency acquisition terminal can possess electric quantity acquisition simultaneously, can Source Data Acquisition and the multiple efficacies of efficiency data acquisition, greatly save user's cost.

Brief description of the drawings

Fig. 1 is the structured flowchart of the energy-efficiency data acquisition terminal of the utility model embodiment;

Fig. 2 is the circuit pin block diagram of the AT91RM9200PQFP embedded-type ARM microprocessor of the CPU module of the energy-efficiency data acquisition terminal of the utility model embodiment;

Fig. 3 is the circuit diagram of the AD modular converter in the energy data acquisition module of energy-efficiency 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 defined by claim in marrow of the present utility model and scope, make substitute, amendment, 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 theory diagram of the energy-efficiency 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-efficiency data acquisition terminal of the utility model embodiment, comprise 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, and electric quantity acquisition module 111, 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, 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 described keyboard input module arranging for the parameter of energy-efficiency data acquisition terminal connects the input end of AT91RM9200 by universal serial bus, the output terminal of described AT91RM9200 connects parameter, current pressure and data on flows for showing setting, value, charge value that can source signal, the described LCD MODULE of efficiency data by universal serial bus, and the electric current that electric quantity acquisition module gathers is connected with the input end of AT91RM9200 with voltage signal.Its course of work is as follows: wherein RS232 interface 106, and infrared module 107, usb 1 08 is for this locality debugging of energy-efficiency data acquisition terminal, Ethernet interface 104.Pressure sensitive module comprises the collection of the standard current signal of vapour, gas, oil for energy source data signals, AD modular converter is for converting the current signal of pressure and flow to voltage signal, electric quantity acquisition module is for carrying out real-time collection to equipment power consumption, 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, simultaneously can source data and power consumption be divided by and obtain efficiency data.

In a concrete application example, AD modular converter adopts the A/D converter AD73360 of 16, six passage.The circuit diagram of the AD modular converter that is AD modular converter shown in Figure 3, 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 4th capacitor C 4 is connected in series the second resistance R 2 of 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, be therefore suitable for multichannel analog input.By the AD modular converter of above setting, can convert pressure signal and flow signal to CPU module accessible signal.

The technology of electric quantity acquisition is comparatively ripe, and therefore the utility model embodiment does not repeat them here.In specific implementation process, the AD modular converter of its use also can be referring to implementation described above, make the AD modular converter of the utility model embodiment can modularization, both applicable to the AD conversion in electric quantity acquisition, also realize applicable to the AD conversion in energy Source Data Acquisition, line voltage, electric current on power panel are passed through respectively to resistance pressure-dividing network, current transformer (TA) and resistance sampling network and carry out signal condition, then complete three-phase voltage, the sampling of current signal real-time synchronization through 6 Channel Synchronous ADC converter AD73360.The conditioning of voltage, current analog signal is realized by resistance pressure-dividing network and TA resistance sampling network respectively, obtains moderate conditioned signal, according to A/D input requirements, adjusts signal and answers 800mV.For effectively suppressing the impact of high-frequency electromagnetic undesired signal on data sampling, identical RC low-pass filter (the cutoff frequency 1591Hz of rear class access parameter of voltage, current regulating passage, meet 21 subharmonic samplings), keep the phase differential between sampling front and back voltage, electric current consistent.Sampled data is delivered to embedded microprocessor data processing unit, electric current, voltage waveform data are carried out to spectrum analysis, isolate fundametal compoment and each harmonic component, its high speed processing ability of relying on completes the tasks such as electric parameter metering, frequency analysis, harmonic electric energy metering.

The energy-efficiency data acquisition terminal more than arranging, by adopting the AT91RM9200 of the system building around ARM920T ARM Thumb processor completely, there is 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-efficiency data acquisition terminal is provided.AT91RM9200 is integrated many standard interfaces, comprise 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) of USB2.0, in addition, it also provides a series of peripheral hardwares that meet industrial standard, can in audio frequency, telecommunications, the outside line of Flash carminum and smart card, use, make conveniently to add RS232 interface 106 as above infrared module 107, usb 1 08 and Ethernet interface 104.The energy-efficiency 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-efficiency data acquisition terminal of the utility model embodiment is for gathering the efficiency of water pump.Gather the flow AI1 of water pump simultaneously, top hole pressure AI2, intake pressure AI3, in the CPU of acquisition terminal inside, by water delivery side of pump, the pressure differential to import (AI2-AI3) is multiplied by flow AI1, again to time integral, be exactly exerting oneself of water pump: P=∫ (AI2-AI3) * AI1*dt, water pump electricity consumption data Q, the efficiency of water pump: η=P/Q.

In another concrete application example, be applied to the energy-efficiency 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, embedded untreated device 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, obtain again again the power consumption of blower fan simultaneously by electric quantity acquisition module, can the real-time efficiency data that calculate blower fan.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments 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

1. an energy-efficiency data acquisition terminal, it is characterized in that, 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, and electric quantity acquisition module, 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 electric current that electric quantity acquisition module gathers is connected with the input end of AT91RM9200 with voltage signal, the output terminal of the described keyboard input module arranging for the parameter of energy-efficiency data acquisition terminal connects the input end of AT91RM9200 by universal serial bus, the output terminal of described AT91RM9200 by universal serial bus connect parameter, current pressure and data on flows for showing setting, can source signal the described LCD MODULE of value.

2. energy-efficiency 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-efficiency 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 4th capacitor C 4 is connected in series the second resistance R 2 of 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.