CN104964767A - Low-energy-consumption and high-precision heat metering device - Google Patents
Low-energy-consumption and high-precision heat metering device Download PDFInfo
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- CN104964767A CN104964767A CN201510471824.1A CN201510471824A CN104964767A CN 104964767 A CN104964767 A CN 104964767A CN 201510471824 A CN201510471824 A CN 201510471824A CN 104964767 A CN104964767 A CN 104964767A
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Abstract
A low-energy-consumption and high-precision heat metering device comprises an ultrasonic heat meter and a main controller. The ultrasonic heat meter comprises a meter body, a support, a measuring pipe, reflectors, energy converters and an integrator. The support is installed in the meter body, the measuring pipe is installed in the support, the two ends of the measuring pipe are provided with the reflectors connected with the support, the energy converters are installed above the opposite reflectors and in the meter body, an instrument box base is installed on a dial plate base at the top end of the meter body, and the integrator with a heat meter probe is hinged to one side of the instrument box base. The main controller is an MSP430F413 single-chip microcomputer and is provided with a power module, a key control module, a storage module, a reading/writing card module, an infrared communication module, an MCU processing control module, a wiegand signal collecting module and a liquid crystal display module. The low-energy-consumption and high-precision heat metering device has the advantages of being small in size, low in power and high in precision.
Description
Technical field
The present invention relates to measuring instrument technical field, particularly relating to Novel household for housing units heating with having low energy consumption and high-precision thermal gauge.
invention field
At present, the ultrasonic calorimeter on home market is due to the defect in design, and usually build-up of pressure increases blocking, the degree of accuracy of the large impact metering of accessory error; Most of phenotype is generally to calibrating and the duty flow signal Bian sampling interval duration (calibrating state is generally 1 ~ 2 second, and is generally 30 ~ 60 seconds during duty) of different numerical value.The mode of operation of this long period " dormancy " type supposes that the heat transport fluid flow velocity of " dormancy " period is stablized and unalterable operating mode designs as principle of work, obvious this hypothesis and actual condition have greater difference, to sacrifice instrument precision for cost, sampling interval duration is designed to two different states (calibrating state and duty), mask the metering precision uncertainty that this mode of operation is brought to instrumentation performance, escape again accredited risk, the design of this mode of operation of the measuring instrument as trade settlement is very ill-considered, because it has cut off the chased after retrospective of measurement standard, run counter to measurement Law regulation, ultrasonic heat energy meter most Bian time difference method single pass ultrasound examination heat transport fluid flow velocity of some enterprises, only by that local sampling of velocity field inspection velocity measurement ﹙ and spot speed, sample ﹚ is adopted to ultrasonic beam, replace the flow velocity of whole velocity field, before the hypothesis of the therefore sampling work pattern of the detection flow velocity of this Points replacing surfaces, that to be whole velocity field be dike on a cross section is even and stable, this duty obviously only just likely exists on calibrating installation, field working conditions is unlikely, this just makes ultrasonic heat energy meter use at the scene when detecting the mean flow rate of velocity field to occur great deviation, thus the quality used at the scene for ultrasonic heat energy meter has buried hidden danger, the water-quality ratio of domestic central heating is more special, and not only " hardness " is higher, very easily fouling under high temperature, and there is various particulate contamination (as magnetized particles, iron bits impurity etc.), a small amount of bubble, even there will be pollutants such as " floccuss ".Under central heating water quality situation more special like this, the calorimeter ultrasonic calorimeter of various model (more than 90% be all) that current central heating is installed and used, owing to there are some fatal hidden danger of quality, the permanance reliability quality problems of larger area are there are.
The technical problem to be solved in the present invention is, provides a kind of impact effectively preventing iron rust impurity his-and-hers watches, without magnetization sensing, wear-resisting, corrosion-resistant, attack protection, the life-span is long, raising measuring accuracy and sensitivity there is low energy consumption and high-precision thermal gauge.
The technical scheme adopted is:
There is low energy consumption and high-precision thermal gauge, comprise ultrasonic calorimeter, master controller.Described ultrasonic calorimeter comprises table body, support, measuring tube, catoptron, transducer, integraph.Described support is contained in table body, and support two ends seal with O type circle and table body, and support is by loading the register pin of table body upper end in table body inner position, and register pin is fixed with holding screw and table body, and by the sealing of register pin O type circle.Described measuring tube is contained in support, be positioned at measuring tube two ends and be provided with the catoptron be connected with support, transducer is equiped with in the top table body of relative reflection mirror, and seal with transducer O type circle, the gasket ring that transducer is equipped with by upper end, end cap, upper cover compresses, described table body top connection table is tried to get to the heart of a matter seat and as a whole, instrument cassette holder dial plate base is equipped with, instrument cassette holder is fixed with Cross Recess Head Screw and upper cover, sealed by dial plate base O type circle and instrument cassette holder, with heat energy meter probe integraph and instrument cassette holder side hinged, form ultrasonic calorimeter.
There is low energy consumption and high-precision thermal gauge, comprise ultrasonic calorimeter, master controller.Described ultrasonic calorimeter comprises table body, support, measuring tube, catoptron, transducer, integraph.Described support is contained in table body, and support two ends seal with O type circle and table body, and support is by loading the register pin of table body upper end in table body inner position, and register pin is fixed with holding screw and table body, and by the sealing of register pin O type circle.Described measuring tube is contained in support, be positioned at measuring tube two ends and be provided with the catoptron be connected with support, transducer is equiped with in the top table body of relative reflection mirror, and seal with transducer O type circle, the gasket ring that transducer is equipped with by upper end, end cap, upper cover compresses, described table body top connection table is tried to get to the heart of a matter seat and as a whole, instrument cassette holder dial plate base is equipped with, instrument cassette holder is fixed with Cross Recess Head Screw and upper cover, sealed by dial plate base O type circle and instrument cassette holder, with heat energy meter probe integraph and instrument cassette holder side hinged, form ultrasonic calorimeter.
Above-mentioned master controller is MSP430F413 single-chip microcomputer, is provided with power module, key control module, memory module, read-write card module, infrared communication module, MCU processing and control module, Wiegand signal acquisition module and LCD MODULE.Wiegand signal acquisition module gathers the flow information in measuring tube, and the output terminal of Wiegand signal acquisition module is connected with the I/O message number of MCU processing and control module; Temperature-measuring module collection is inflow temperature and return water temperature respectively, and temperature-measuring module is connected with the I/O message number of MCU processing and control module; The output terminal of key control module is connected with the I/O message number of MCU processing and control module; The input end of LCD MODULE is connected with the I/O message number of MCU processing and control module; Memory module, read-write card module and infrared communication module are connected with the I/O message number of MCU processing and control module respectively; Power module is key control module, read-write card module, MCU processing and control module and Wiegand signal acquisition module provide power supply.
The present invention has the advantage that volume is little, low in energy consumption, precision is high, and it supports usb communication mode, uses M-bus load mode and achieve cold and hot design heavily to switch, for heat metering provides new approaches.
Background technology
At present, the closest prior art existed of the present invention is a kind of ultrasonic calorimeter (utility model patent) disclosed in the Jin Feng development in science and technology company limited of Tianjin.This table comprises table body, reflector plate, is located at first transducer at table body receiving port place and is located at second transducer at table body emission port place, the middle part at the top of table body is provided with circular open, the circular open place that reflector plate is secured by bolts in, the side of the reflecting surface of reflector plate extends in table body.By reflector plate being screwed on the circular open place at the middle part at table body top, when in pipeline due to Long-Time Service fouling time, open four gib screws, take out after stainless steel reflector plate cleans and install, reach the object need not torn table open and table continuation can be made to use, extended in table body by the side of the reflecting surface by reflector plate, reflector plate probes into a part for pipeline, effectively can solve air bubble problem, reach the object of accurate-metering.
A kind of low-power consumption calorimeter (utility model patent) of Fuyang, Hangzhou instrument head factory and Zhongdao Science and Technology Development Co., Ltd., Hangzhou's development.This product Wiegand signal acquisition module gathers ducted flow information, and output terminal is connected with the I/O message number of MCU processing and control module; Temperature-measuring module collection gathers inflow temperature and return water temperature respectively, and output terminal is connected with the I/O message number of MCU processing and control module; The output terminal of key control module, the input end of LCD MODULE are connected with the I/O message number of MCU processing and control module.Memory module, valve control module, read-write card module and infrared communication module are connected with the I/O message number of MCU processing and control module respectively.Key control module comprises button K1, by confirming that button K1's presses number of times enable read-write card module or infrared communication module respectively.After adopting 32 single-chip microcomputers of Cortex-M3 core design, power consumption is lower.
The ultrasonic calorimeter (utility model patent) of Tianjin Zhong Tian electronics Development Co., Ltd development, two transducers comprising table body, reflector plate and be arranged in table body, it is characterized in that: described table body inwall is provided with two sedimentation holes, described sedimentation hole is corresponding with described transducer, sedimentation hole is provided with the support column for placing reflector plate.The beneficial effect of this utility model is: take the larger reflector plate support of pipeline space by abandoning, adopt and less support column is affected for placing reflector plate to pipeline flow, greatly reduce pipeline crushing, extend the serviceable life of table tool, and effectively prevent from, because deformation of timbering causes current to produce turbulent flow, having influence on the accuracy of flow measurement.
A kind of novel heat meter (utility model patent) of Oufu Numerical Control Technique's development, comprise liquid crystal display, casing and probe, liquid crystal display is provided with above casing, casing side is provided with probe, casing surface is provided with inquiry button, casing one end is provided with magnetic card slot, and casing can upwards lift.This utility model is installed on the water inlet of caliduct, and requires that level is installed.Probe is for measuring heat.During use, magnetic card is inserted the magnetic card slot of casing, use inquiry button, liquid crystal display just can show the heat of caliduct at that time, use for convenience and read data, casing can upwards lift certain angle.The advantage of this utility model is: easy for installation, simple to operate, and low price realizes the independent counting of every household, the humanization designing of casing, easy-to-read, and the design of magnetic card slot is easy to use, saves worry laborsaving.
A kind of novel heat meter (utility model patent) of Oufu Numerical Control Technique's development, comprise liquid crystal display, casing and probe, liquid crystal display is provided with above casing, casing side is provided with probe, casing surface is provided with inquiry button, casing one end is provided with magnetic card slot, and casing can upwards lift.This utility model is installed on the water inlet of caliduct, and requires that level is installed.Probe is for measuring heat.During use, magnetic card is inserted the magnetic card slot of casing, use inquiry button, liquid crystal display just can show the heat of caliduct at that time, use for convenience and read data, casing can upwards lift certain angle.The advantage of this utility model is: easy for installation, simple to operate, and low price realizes the independent counting of every household, the humanization designing of casing, easy-to-read, and the design of magnetic card slot is easy to use, saves worry laborsaving.
Accompanying drawing illustrates:
Fig. 1 is schematic diagram of the present invention.
Embodiment
There is low energy consumption and high-precision thermal gauge, comprise ultrasonic calorimeter, master controller.Described ultrasonic calorimeter comprises table body 1, support 2, measuring tube 3, catoptron 5, transducer 7, integraph 18.Described support 2 is contained in table body 1, and support 2 two ends seal with O type circle 4 and table body 1, and support 2 is by loading the register pin 11 of table body 1 upper end in table body 1 inner position, and register pin 11 is fixed with holding screw 13 and table body 1, and is sealed by register pin O type circle 12.Described measuring tube 3 is contained in support 2, be positioned at measuring tube 3 two ends and be provided with the catoptron 5 be connected with support, transducer 7 is equiped with in the top table body of relative reflection mirror 5, and seal with transducer O type circle 6, the gasket ring 8 that transducer 7 is equipped with by upper end, end cap 9, upper cover 10 compresses, described table body 1 top connection table is tried to get to the heart of a matter seat 14 and as a whole, instrument cassette holder 16 dial plate base 14 is equipped with, instrument cassette holder 16 is fixed with Cross Recess Head Screw 17 and upper cover 10, sealed by dial plate base O type circle 15 and instrument cassette holder 16, integraph 18 with heat energy meter probe is hinged with instrument cassette holder 16 side, form ultrasonic calorimeter.Described master controller is MSP430F413 single-chip microcomputer, is provided with power module, key control module, memory module, read-write card module, infrared communication module, MCU processing and control module, Wiegand signal acquisition module and LCD MODULE.Wiegand signal acquisition module gathers the flow information in measuring tube, and the output terminal of Wiegand signal acquisition module is connected with the I/O message number of MCU processing and control module; Temperature-measuring module gathers inflow temperature and return water temperature respectively, and temperature-measuring module is connected with the I/O message number of MCU processing and control module; The output terminal of key control module is connected with the I/O message number of MCU processing and control module; The input end of LCD MODULE is connected with the I/O message number of MCU processing and control module; Memory module, read-write card module and infrared communication module are connected with the I/O message number of MCU processing and control module respectively; Power module is key control module, read-write card module, MCU processing and control module and Wiegand signal acquisition module provide power supply.
Present invention employs repeatedly continuous action of low-voltage pulse shooting techniques, significantly reduce power consumption during ultrasound works; Devise double T selecting frequency filtering network amplifier that brand-new asymmetric RC forms as automatic gain amplifier, to ensure that in the distortionless situation of echoed signal the undesired signal of filtering effectively, be exaggerated faint echoed signal.
Design unique charge-discharge circuit to be used for asking connecing and to measure ultrasound wave time difference method scheme, precision problem when solving counter counts in pipe with small pipe diameter, low flow velocity situation.Have employed the response time is short, performance is high Ptl000 thermal resistance as temperature sensor, solve the thermometric response time difference delayed larger problem, make to measure signal to noise ratio (S/N ratio) simultaneously and improve 2 ~ 10 times.The internal comparator carried in conjunction with single-chip microcomputer and former existing theory are from having created the high precision analogue conversion of class ∑ one △ algorithm realization.
Wiegand signal acquisition module gathers ducted flow information, and the output terminal of Wiegand signal acquisition module is connected with the I/O message number of MCU processing and control module; Temperature-measuring module collection gathers inflow temperature and return water temperature respectively; The output terminal of key control module is connected with the I/O message number of MCU processing and control module; The input end of LCD MODULE is connected with the I/O message number of MCU processing and control module; Temperature-measuring module, memory module, valve control module, read-write card module and infrared communication module are connected with the I/O message number of MCU processing and control module respectively; Power module is key control module, valve control module, read-write card module, MCU processing and control module and Wiegand signal acquisition module provide power supply.
After adopting 32 single-chip microcomputers of Cortex-M3 core design, stronger than 430 traditional single-chip microcomputer processing poweies, merit
Consume lower, under low-power consumption mode, wakeup time is shorter, greatly reduces the power consumption of circuit, and static working current is less than 4 μ A, and general work electric current is less than the serviceable life that 12 μ A. extend battery, reaches energy-saving effect.
Circuit is more compact simply, power consumption is lower, precision is higher.By setting up calorimeter mathematical model, selecting heat enthalpy value method as the algorithm of data processing, devise the high precision calorimeter based on MSP430 microprocessor.In order to reduce power consumption, shorten the working time of CPU, utilize each mode of operation of MSP430, reasonably switch and utilize I/O mouth to control module for power supply, above-mentioned formation has low energy consumption and high-precision thermal gauge as far as possible.
Claims (2)
1. there is low energy consumption and high-precision thermal gauge, comprise ultrasonic calorimeter, master controller, described ultrasonic calorimeter comprises table body (1), support (2), measuring tube (3), catoptron (5), transducer (7), integraph (18), it is characterized in that described support (2) is contained in table body (1), support (2) two ends seal with O type circle (4) and table body (1), support (2) is by loading the register pin (11) of table body (1) upper end in table body (1) inner position, register pin (11) is fixed with holding screw (13) and table body (1), and by register pin O type circle (12) sealing, measuring tube (3) is contained in support (2), be positioned at measuring tube (3) two ends and be provided with the catoptron (5) be connected with support, transducer (7) is equiped with in the top table body of relative reflection mirror (5), and seal with transducer O type circle (6), the gasket ring (8) that transducer (7) is equipped with by upper end, end cap (9), upper cover (10) compresses, table body (1) top connection table is tried to get to the heart of a matter seat (14) and as a whole, instrument cassette holder (16) dial plate base (14) is equipped with, instrument cassette holder (16) is fixed with Cross Recess Head Screw (17) and upper cover (10), sealed with instrument cassette holder (16) by dial plate base O type circle (15), integraph (18) with heat energy meter probe is hinged with instrument cassette holder (16) side, form ultrasonic calorimeter.
2. according to claim 1 have low energy consumption and high-precision thermal gauge, it is characterized in that described master controller is MSP430F413 single-chip microcomputer, be provided with power module, key control module, memory module, read-write card module, infrared communication module, MCU processing and control module, Wiegand signal acquisition module and LCD MODULE, Wiegand signal acquisition module gathers the flow information in measuring tube, and the output terminal of Wiegand signal acquisition module is connected with the I/O message number of MCU processing and control module; Temperature-measuring module gathers inflow temperature and return water temperature respectively, and temperature-measuring module is connected with the I/O message number of MCU processing and control module; The output terminal of key control module is connected with the I/O message number of MCU processing and control module; The input end of LCD MODULE is connected with the I/O message number of MCU processing and control module; Memory module, read-write card module and infrared communication module are connected with the I/O message number of MCU processing and control module respectively; Power module is key control module, read-write card module, MCU processing and control module and Wiegand signal acquisition module provide power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510471824.1A CN104964767A (en) | 2015-08-05 | 2015-08-05 | Low-energy-consumption and high-precision heat metering device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510471824.1A CN104964767A (en) | 2015-08-05 | 2015-08-05 | Low-energy-consumption and high-precision heat metering device |
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| CN104964767A true CN104964767A (en) | 2015-10-07 |
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| CN201510471824.1A Withdrawn CN104964767A (en) | 2015-08-05 | 2015-08-05 | Low-energy-consumption and high-precision heat metering device |
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- 2015-08-05 CN CN201510471824.1A patent/CN104964767A/en not_active Withdrawn
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Application publication date: 20151007 |