Ultra-low power consumption intelligent control high-precision ultrasonic calorimeter
Technical field
The utility model relates to the measuring instrument technical field, particularly relates to for the novel family of house unit heating controlling the high-precision ultrasonic calorimeter with ultra-low power consumption intelligent.
Background technology
At present, be the Tianjin gold phoenix development in science and technology disclosed a kind of ultrasonic calorimeter of company limited (utility model patent) near the prior art that has existed of the present invention.This table comprises table body, reflector plate, is located at first transducer at table body receiving port place and is located at second transducer of showing body emission port place, the middle part at the top of table body is provided with circular open, reflector plate by bolt in the circular open place, a side of the reflecting surface of reflector plate extend the table body in.By the reflector plate spiral shell being loaded on the circular open place at the middle part of showing the body top, when in the pipeline because long-term when using fouling, open four gib screws, take out and install after the stainless steel reflector plate cleans, reached and need not tear the purpose that table can make table continue use open, extended in the table body by the side with the reflecting surface of reflector plate, reflector plate probes into the part of pipeline, can effectively solve air bubble problem, reach the purpose 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 is gathered ducted flow information, and output terminal is connected with the I/O mouth signal of MCU processing and control module; Inflow temperature and return water temperature are gathered in the temperature-measuring module collection respectively, and output terminal is connected with the I/O mouth signal of MCU processing and control module; The output terminal of button control module, the input end of LCD MODULE are connected with the I/O mouth signal 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 mouth signal of MCU processing and control module respectively.The button control module comprises button K1, enables to read and write card module or infrared communication module respectively by the number of times of pressing of confirming button K1.After adopting 32 single-chip microcomputers of Cortex-M3 core design, power consumption is lower.
The ultrasonic calorimeter (utility model patent) of day electronics Development Co., Ltd development in the Tianjin, comprise table body, reflector plate and be arranged on two transducers showing in the body, it is characterized in that: described table body inwall is provided with two sedimentation holes, described sedimentation hole is corresponding with described transducer, is equipped with on the sedimentation hole for the support column of placing reflector plate.The beneficial effects of the utility model are: take the bigger reflector plate support of pipeline space by abandoning, employing is used for placing reflector plate to the less support column of pipeline flow influence, reduce the pipeline crushing greatly, prolonged the serviceable life of table tool, and effectively prevent from having influence on the accuracy of flow measurement because deformation of timbering causes current to produce turbulent flow.
A kind of novel heat meter (utility model patent) of Oufu Numerical Control Technique's development, comprise liquid crystal display, casing and probe, the casing top is provided with liquid crystal display, casing one side is provided with probe, the casing surface is provided with inquiry button, casing one end is provided with the magnetic card slot, and casing can upwards lift.The utility model is installed on the water inlet of caliduct, and requires level to install.Probe is used for measuring heat.During use, magnetic card is inserted the magnetic card slot of casing, use inquiry button, just can show the heat of caliduct at that time on the liquid crystal display, for conveniently using and read data, casing can upwards lift certain angle.Advantage of the present utility model is: easy for installation, simple to operate, and low price, the independent counting of realization every household, the humanization designing of casing, easy-to-read, the design of magnetic card slot, the convenient use, it is laborsaving to save worry.
Technical matters:
At present, the ultrasonic calorimeter on the home market is owing to the defective in the design, and usually build-up of pressure increases obstruction, the degree of accuracy of the big influence metering of accessory error; Most of phenotypes generally to calibrating and duty flow signal Bian with sampling interval time of different numerical value (the calibrating state is generally 1~2 second, and is generally 30~60 seconds during duty).The mode of operation of " dormancy " type of this long period is that the heat transport fluid flow velocity during the hypothesis " dormancy " is stablized and unalterable operating mode designs as principle of work, obvious this hypothesis and actual condition have greater difference, and are cost to sacrifice instrument precision; The sampling interval time is designed to two different states (calibrating state and duty), covered the metering precision uncertainty that this mode of operation brings for the instrumentation performance, escaped the risk of being examined and determine again, design as this mode of operation of measuring instrument of trade settlement is very ill-considered, because it has cut off the chased after retrospective of measurement standard, run counter to the measurement Law rules; The most Bian of the ultrasonic heat energy meter of some enterprises single pass ultrasound examination heat transport fluid of time difference method flow velocity, be to be that spot speed is adopted sample ﹚ to that local sampling inspection velocity measurement ﹙ of ultrasonic beam by velocity field only, the flow velocity that replaces whole velocity field, therefore this with point for the hypothesis of the sampling work pattern of the detection flow velocity of face before dike be that whole velocity field is even and stable in a cross section, this duty obviously only just might exist on calibrating installation, field working conditions is unlikely, this great deviation occurs when just making ultrasonic heat energy meter use the mean flow rate that detects velocity field at the scene, thereby the quality of using at the scene for ultrasonic heat energy meter has been buried hidden danger; The water-quality ratio of domestic central heating is more special, and not only " hardness " is higher, very easily fouling under the high temperature, and have various particulate contamination (as magnetized particles, iron bits impurity etc.), a spot of bubble even pollutants such as " floccuss " can occur.Under more special like this central heating water quality present situation, the calorimeter (all being the ultrasonic type calorimeter of various models more than 90%) that central heating is is at present installed and used, owing to have some fatal hidden danger of quality, larger area permanance reliability quality problems occurred.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of influence that effectively prevents iron rust impurity his-and-hers watches is provided, and do not have the magnetization sensing, wear-resisting, corrosion-resistant, attack protection, and the life-span is long, improves the ultra-low power consumption intelligent of measuring accuracy and sensitivity and controls the high-precision ultrasonic calorimeter.
The technical scheme that adopts is:
Ultra-low power consumption intelligent control high-precision ultrasonic calorimeter comprises ultrasonic calorimeter, master controller.Described ultrasonic calorimeter comprises table body, support, measuring tube, catoptron, transducer, integraph.Described support is contained in the table body, and the support two ends are with O type circle and the sealing of table body, and support is located in the table body by the register pin of the table body upper end of packing into, 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 the support, be positioned at the measuring tube two ends and be provided with the catoptron that is connected with support, be equiped with transducer in the top of the catoptron table body relatively, and seal with transducer O type circle, the gasket ring that transducer is equipped with by the upper end, end cap, loam cake compress, described table body top connects dial plate base and as a whole, the instrument cassette holder is housed on the dial plate base, the instrument cassette holder is fixed with Cross Recess Head Screw and loam cake, by dial plate base O type circle and the sealing of instrument cassette holder, the integraph and instrument cassette holder one side that have heat energy table probe are hinged, constitute ultrasonic calorimeter.
Above-mentioned master controller is the MSP430F413 single-chip microcomputer, is provided with power module, button control module, memory module, read-write card module, infrared communication module, MCU processing and control module, Wiegand signal acquisition module and LCD MODULE.The Wiegand signal acquisition module is gathered the flow information in the measuring tube, and the output terminal of Wiegand signal acquisition module is connected with the I/O mouth signal of MCU processing and control module; The temperature-measuring module collection is inflow temperature and return water temperature respectively, and temperature-measuring module is connected with the I/O mouth signal of MCU processing and control module; The output terminal of button control module is connected with the I/O mouth signal of MCU processing and control module; The input end of LCD MODULE is connected with the I/O mouth signal of MCU processing and control module; Memory module, read-write card module and infrared communication module are connected with the I/O mouth signal of MCU processing and control module respectively; Power module provides power supply for button control module, read-write card module, MCU processing and control module and Wiegand signal acquisition module.
The utlity model has that volume is little, low in energy consumption, advantage of high precision, it supports usb communication mode, uses the M-bus load mode and has realized that cold and hot design heavily switches, for heat metering provides new approaches.
Description of drawings
Fig. 1 is the utility model ultrasonic calorimeter synoptic diagram.
Embodiment
Ultra-low power consumption intelligent control high-precision ultrasonic calorimeter comprises 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 the table body 1, and support 2 two ends are with O type circle 4 and 1 sealing of table body, and support 2 is by register pin 11 location in table body 1 of table body 1 upper end of packing into, and register pin 11 is fixing with table body 1 with holding screw 13, and by 12 sealings of register pin O type circle.Described measuring tube 3 is contained in the support 2, be positioned at measuring tube 3 two ends and be provided with the catoptron 5 that is connected with support, be equiped with transducer 7 in the top of the catoptron 5 table body relatively, and with 6 sealings of transducer O type circle, the gasket ring 8 that transducer 7 is equipped with by the upper end, end cap 9, loam cake 10 compresses, described table body 1 top connects dial plate base 14 and as a whole, instrument cassette holder 16 is housed on the dial plate base 14, instrument cassette holder 16 is fixing with loam cake 10 with Cross Recess Head Screw 17, by dial plate base O type circle 15 and 16 sealings of instrument cassette holder, the integraph 18 that has heat energy table probe is hinged with instrument cassette holder 16 1 sides, constitutes ultrasonic calorimeter.Described master controller is the MSP430F413 single-chip microcomputer, is provided with power module, button control module, memory module, read-write card module, infrared communication module, MCU processing and control module, Wiegand signal acquisition module and LCD MODULE.The Wiegand signal acquisition module is gathered the flow information in the measuring tube, and the output terminal of Wiegand signal acquisition module is connected with the I/O mouth signal of MCU processing and control module; Temperature-measuring module is gathered inflow temperature and return water temperature respectively, and temperature-measuring module is connected with the I/O mouth signal of MCU processing and control module; The output terminal of button control module is connected with the I/O mouth signal of MCU processing and control module; The input end of LCD MODULE is connected with the I/O mouth signal of MCU processing and control module; Memory module, read-write card module and infrared communication module are connected with the I/O mouth signal of MCU processing and control module respectively; Power module provides power supply for button control module, read-write card module, MCU processing and control module and Wiegand signal acquisition module.
The present invention
Adopted repeatedly action of low-voltage pulse shooting techniques continuously, the power consumption when greatly having reduced ultrasonic work; Designed double T selecting frequency filtering network amplifier that brand-new asymmetric RC constitutes as automatic gain amplifier, the undesired signal that guaranteed under the distortionless situation of echoed signal filtering has effectively been amplified faint echoed signal.
The charge-discharge circuit of designing uniqueness is used for asking connecing measures ultrasound wave time difference method scheme, has solved counter accuracy of timekeeping problem under little caliber, the low flow condition.Adopted the response time is short, performance is high Ptl000 thermal resistance as temperature sensor, solved the thermometric response time difference bigger problem that lags behind, made that simultaneously measuring signal to noise ratio (S/N ratio) has improved 2~10 times.The internal comparator that carries in conjunction with single-chip microcomputer and former existing theory have realized the high precision analogue conversion from having created class ∑ one △ algorithm.
The Wiegand signal acquisition module is gathered ducted flow information, and the output terminal of Wiegand signal acquisition module is connected with the I/O mouth signal of MCU processing and control module; Inflow temperature and return water temperature are gathered in the temperature-measuring module collection respectively; The output terminal of button control module is connected with the I/O mouth signal of MCU processing and control module; The input end of LCD MODULE is connected with the I/O mouth signal 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 mouth signal of MCU processing and control module respectively; Power module provides power supply for button control module, valve control module, read-write card module, MCU processing and control module and Wiegand signal acquisition module.
After adopting 32 single-chip microcomputers of Cortex-M3 core design, stronger than 430 traditional single-chip microcomputer processing poweies, merit
Consume lowlyer, wakeup time is shorter under the low-power consumption mode, has lowered the power consumption of circuit greatly, and static working current is less than 4 μ A, and the general work electric current reaches energy-saving effect less than the serviceable life that 12 μ A. have prolonged battery.
Circuit is more compact simply, power consumption is lower, precision is higher.Algorithm by setting up the calorimeter mathematical model, selecting the heat enthalpy value method to handle as data has designed the high precision calorimeter based on the MSP430 microprocessor.In order to reduce power consumption, shorten the working time of CPU as far as possible, utilize each mode of operation of MSP430, reasonably switch and utilize the I/O mouth that module for power supply is controlled, above-mentioned formation ultra-low power consumption intelligent control high-precision ultrasonic calorimeter.