CN102749154A - Method, device and energy meter for measuring temperature of fluid medium by ultrasonic wave - Google Patents
Method, device and energy meter for measuring temperature of fluid medium by ultrasonic wave Download PDFInfo
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Abstract
The invention relates to a method, a device and an energy meter for measuring the temperature of a fluid medium by an ultrasonic wave, and a temperature measurement device. The method comprises the steps of establishing a corresponding table of the temperature of the fluid medium and the ultrasonic wave at first sound speed in the fluid medium; storing the corresponding table; computing the downstream transmission time and the upstream transmission time of the ultrasonic wave along the direction of the fluid medium; computing the first sound speed of the ultrasonic wave in the fluid medium according to the downstream transmission time and the upstream transmission time; and obtaining the temperature of the fluid medium according to the first sound speed of the ultrasonic wave in the fluid medium. The method, the device, the energy meter for measuring the temperature of the fluid medium by the ultrasonic wave, and the temperature measurement device, provided by the invention, have the advantages that a temperature sensor is not needed, the cost is saved, and the installation is convenient.
Description
Technical field
The present invention relates to metering and use the instrument field, more particularly, relate to a kind of ultrasonic measurement fluid media (medium) method of temperature, device, energy meter and temperature measuring equipment.
Background technology
Ultrasonic calorimeter is to measure flow and show that current discharge or absorb the instrument of thermal energy through heat-exchange system through hyperacoustic method.The physical quantity that it records through two kinds of sensors is the flow of thermal barrier and the temperature of import and export, passes through the compensation and the integral and calculating of density and heat enthalpy value again, just can obtain calorie value.It is a kind of electromechanical integrated product that is the basis with microprocessor and high-precision sensor.Ultrasonic calorimeter is a kind of high-tech product that comprises machinery, electronics and infotech, has obtained successful application at present in a lot of fields.
The ultrasonic calorimeter that uses at present need be installed in a pair of temperature sensor respectively on the ascending tube and down pipe through heat transport fluid usually; In order to measure the temperature of fluid; Could realize heat metering like this, still, being equipped with thermometer can increase the calorimeter design cost; Simultaneously, temperature sensor needs contact with fluid could realize temperature survey, so mounting temperature sensor must perforate on pipeline, the outfit temperature sensor increases calorimetric installation difficulty.
Summary of the invention
The technical matters that the present invention will solve is; Cost to the above-mentioned mounting temperature sensor of prior art brings is higher, the defective of inconvenient installation, provides a kind of and need not temperature sensor, saves cost, ultrasonic measurement fluid media (medium) method of temperature, device, energy meter and temperature measuring equipment easy for installation.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of ultrasonic measurement fluid media (medium) method of temperature, comprise the steps:
A) set up the correspondence table of fluid media (medium) temperature and ultrasound wave first velocity of sound in said fluid media (medium) and store said correspondence table;
B) the following current transmission time
of calculating ultrasound wave longshore current body medium direction and adverse current transmission time
are wherein; L is the path of ultrasound wave walking; θ is the flow direction angle of hyperacoustic transmission direction and fluid media (medium); And 0 ° of < < 180 ° of θ; C is the velocity of sound of ultrasound wave in non-current medium, and V is the flowing velocity of fluid media (medium);
C) calculate first velocity of sound
of ultrasound wave in fluid media (medium) according to said following current transmission time and adverse current transmission time
D) first velocity of sound of the said ultrasound wave of foundation in fluid media (medium) obtains the temperature of said fluid media (medium).
In ultrasonic measurement fluid media (medium) method of temperature of the present invention, said step D) temperature of fluid media (medium) is to obtain through the correspondence table of searching said fluid media (medium) temperature and ultrasound wave first velocity of sound in said fluid media (medium) in.
In ultrasonic measurement fluid media (medium) method of temperature of the present invention, the flowing velocity of said fluid media (medium) comprises 0.
The invention still further relates to a kind of device of realizing said method, comprising:
Correspondence table is set up and memory module: be used for setting up fluid media (medium) temperature and ultrasound wave in the correspondence table of first velocity of sound of said fluid media (medium) and store said correspondence table;
The transmission time computing module: the following current transmission time
and the adverse current transmission time
that are used to calculate ultrasound wave longshore current body medium direction are wherein; L is the path of ultrasound wave walking; θ is the flow direction angle of hyperacoustic transmission direction and fluid media (medium); And 0 ° of < < 180 ° of θ; C is the velocity of sound of ultrasound wave in non-current medium, and V is the flowing velocity of fluid media (medium);
First velocity of sound computing module: be used for calculating first velocity of sound
of ultrasound wave at fluid media (medium) according to said following current transmission time and adverse current transmission time
Medium temperature acquisition module: the temperature that is used for obtaining in first velocity of sound of fluid media (medium) said fluid media (medium) according to said ultrasound wave.
In device of the present invention, the temperature of said fluid media (medium) is to obtain through the correspondence table of searching said fluid media (medium) temperature and ultrasound wave first velocity of sound in said fluid media (medium).
The invention still further relates to a kind of energy meter that utilizes said method, comprise measuring tube cylindraceous, be separately positioned on following current transducer and adverse current transducer that said measuring tube diameter two ends, one of which end are connected with said measuring tube; Also comprise the control module that is connected with the other end of said following current transducer and adverse current transducer respectively; Said control module comprises said apparatus; Said control module is used to control said following current transducer and adverse current transducer transmitting-receiving ultrasonic signal; According to the following current transmission time and the adverse current transmission time of its calculated signals ultrasound wave longshore current body medium direction that obtains; And, obtain the temperature of said fluid media (medium) through searching above-mentioned correspondence table according to the following current transmission time obtained and first velocity of sound of adverse current transmission time calculating ultrasound wave in fluid media (medium).
In energy meter of the present invention, also comprise the display unit that is connected and is used to show with said control module, and the power supply that is connected and is used to supply power with said control module.
In energy meter of the present invention, said adverse current transducer receives the ultrasound wave that said following current transducer sends and converts ultrasonic signal to electric signal and is sent to said control module; Said following current transducer receives the ultrasound wave that said adverse current transducer sends and converts ultrasonic signal to electric signal and is sent to said control module, and ultrasonic transmission direction between said following current transducer and the said adverse current transducer and the angle between the said measuring tube length direction are acute angle.
In energy meter of the present invention, said power source voltage is DC voltage 10V ~ 24V or DC voltage 10V ~ 36V or alternating voltage 220V.
The invention still further relates to a kind of temperature measuring equipment, said temperature measuring equipment is thermometric instruments or temperature measuring instrument, and said temperature measuring equipment comprises temperature-measuring module, and said temperature-measuring module comprises said device, and said device comprises:
Correspondence table is set up and memory module: be used for setting up fluid media (medium) temperature and ultrasound wave in the correspondence table of first velocity of sound of said fluid media (medium) and store said correspondence table;
The transmission time computing module: the following current transmission time
and the adverse current transmission time
that are used to calculate ultrasound wave longshore current body medium direction are wherein; L is the path of ultrasound wave walking; θ is the flow direction angle of hyperacoustic transmission direction and fluid media (medium); And 0 ° of < < 180 ° of θ; C is the velocity of sound of ultrasound wave in non-current medium, and V is the flowing velocity of fluid media (medium);
First velocity of sound computing module: be used for calculating first velocity of sound
of ultrasound wave at fluid media (medium) according to said following current transmission time and adverse current transmission time
Medium temperature acquisition module: the temperature that is used for obtaining in first velocity of sound of fluid media (medium) said fluid media (medium) according to said ultrasound wave;
The temperature of said fluid media (medium) is to obtain through the correspondence table of searching said fluid media (medium) temperature and ultrasound wave first velocity of sound in said fluid media (medium).
Ultrasonic measurement fluid media (medium) method of temperature, device, energy meter and the temperature measuring equipment of embodiment of the present invention; Has following beneficial effect: because through measuring in the fluid media (medium) ultrasound wave through the following current transmission time and the adverse current transmission time in a certain regular length path; And then calculate first velocity of sound of ultrasound wave in fluid media (medium); And by the corresponding relation of the fluid media (medium) temperature and first velocity of sound of ultrasound wave in fluid media (medium), and then obtain the temperature of fluid media (medium); Therefore the temperature that does not need mounting temperature sensor can obtain fluid media (medium) has reduced the energy meter design cost; Simultaneously; It has saved the qualification of mounting temperature sensor need perforates on pipeline, has reduced the installation difficulty of energy meter, so need not temperature sensor, saves cost, easy for installation.
Description of drawings
Fig. 1 is the process flow diagram of method among ultrasonic measurement fluid media (medium) method of temperature of the present invention, device, energy meter and embodiment of temperature measuring equipment;
Fig. 2 is the corresponding chart of fluid media (medium) temperature and first velocity of sound of ultrasound wave in fluid media (medium) among the said embodiment;
Fig. 3 is the structural representation that installs among the said embodiment;
Fig. 4 is the structural representation of energy meter among the said embodiment.
Embodiment
Can understand and embodiment of the present invention for the ease of those of ordinary skill in the art, will combine accompanying drawing that the embodiment of the invention is described further below.
In ultrasonic measurement fluid media (medium) method of temperature of the present invention, device, energy meter and temperature measuring equipment embodiment, the process flow diagram of its method is as shown in Figure 1, and in Fig. 1, its method comprises:
Step S10 sets up the correspondence table and the storage of the temperature and first velocity of sound: in the present embodiment; Calculating the ultrasonic transmission times prior; To set up the correspondence table of fluid media (medium) temperature and ultrasound wave first velocity of sound in this fluid media (medium) in advance and store this correspondence table; This correspondence table is through a large amount of experiment, and experimental data is carried out drawing after the sorting-out in statistics.In this step, fluid media (medium) is a water, under an atmospheric pressure, has set up the temperature of water and the correspondence table (corresponding relation) of first velocity of sound of ultrasound wave in water, and its correspondence table sees also Fig. 2, after a while Fig. 2 is also had description.Certainly, the fluid media (medium) in the present embodiment also can be other fluid media (medium)s outside dewatering, and equally also can set up the corresponding relation (correspondence table) of above-mentioned other fluid media (medium) temperature and first velocity of sound of ultrasound wave in this fluid media (medium).What deserves to be mentioned is; In some cases; Can carry out this step, for example: have in advance so the correspondence table of a fluid media (medium) temperature and first velocity of sound of ultrasound wave in this fluid media (medium), then do not need to set up once more this correspondence table yet; When needs are measured the temperature of fluid media (medium), can directly bring this correspondence table and utilize.
Step S11 calculates following current, the adverse current transmission time of ultrasound wave longshore current body medium direction: in this step; Calculate the following current transmission time and the adverse current transmission time of ultrasound wave longshore current body medium direction; In the present embodiment, the path of ultrasound wave walking is L, and the flow direction angle of hyperacoustic transmission direction and fluid media (medium) is θ; Here, 0 °<θ<180 °, the velocity of sound of ultrasound wave in non-current medium is c, and the flowing velocity of fluid media (medium) is V, calculates the following current transmission time of ultrasound wave longshore current body medium direction
With the adverse current transmission time
Owing to the mobile reason (promptly when fluid media (medium) is the dynamic fluid medium) of fluid media (medium); Making the used used time weak point of time ratio adverse current transmission of distance of ultrasound wave following current transmission L length, also is the following current transmission time t of ultrasound wave longshore current body medium (dynamic fluid medium) direction
dLess than adverse current transmission time t
uWhat deserves to be mentioned is that in the present embodiment, the flowing velocity of fluid media (medium) comprises 0, that is to say that the fluid media (medium) in the present embodiment can also can be the dynamic fluid medium for the static fluid medium.
Step S12 calculates first velocity of sound of ultrasound wave in fluid media (medium): in this step, and the following current transmission time t that draws according to above-mentioned steps S11
dWith adverse current transmission time t
uCalculate first velocity of sound of ultrasound wave in fluid media (medium)
Step S13 obtains the temperature of fluid media (medium): in this step; First velocity of sound c ' of ultrasound wave in fluid media (medium) that draws according to above-mentioned steps S12; The temperature of fluid media (medium) obtains through above-mentioned correspondence table, and concrete is exactly the temperature that the correspondence table (corresponding relation) of temperature and first velocity of sound of ultrasound wave in water through searching the water of setting up among the above-mentioned steps S10 obtains corresponding fluid media (medium) (fluid media (medium) is a water in the present embodiment); Fig. 2 is the fluid media (medium) temperature and the corresponding chart of first velocity of sound of ultrasound wave in this fluid media (medium); More specifically the say so corresponding chart of temperature with first velocity of sound of ultrasound wave in water of water; In the correspondence table among Fig. 2, t is the temperature of water, and its unit is ℃; C ' is first velocity of sound of ultrasound wave in water, and its unit is m/s (meter per second); Specifically the temperature of fluid media (medium) obtains through searching above-mentioned correspondence table, to present embodiment; According to first velocity of sound c ' of ultrasound wave in water that obtains, for example: if c ' is 1426.1m/s, the temperature of then from correspondence table, searching water outlet is 5 ℃; If c ' is 1543.5m/s, the temperature of then from correspondence table, searching water outlet is 51 ℃, and is same; When c ' is worth for other, can from correspondence table, find out the temperature value of the pairing water of this first acoustic velocity value; What deserves to be mentioned is; This correspondence table draws under an atmospheric pressure; In other words; If not under an atmospheric pressure, but under other condition, then first velocity of sound of ultrasound wave in fluid media (medium) and the corresponding relation of fluid media (medium) temperature (also being the data in the correspondence table) will change; Certainly; Under the certain situation of present embodiment; Correspondence table also can be first velocity of sound and the corresponding relation of this fluid media (medium) temperature in ultrasound wave other fluid media (medium)s outside dewatering, and has first velocity of sound of ultrasound wave in this fluid media (medium) that obtains to find the temperature of its this corresponding fluid media (medium) equally.
The invention still further relates to a kind of device of realizing said method, its structural representation is as shown in Figure 3, and this device comprises correspondence table foundation and memory module 11, transmission time computing module 12, first velocity of sound computing module 13 and medium temperature acquisition module 14.In these modules, the correspondence table is created, and storage module 11 is used to establish the temperature and the ultrasonic wave in the fluid medium in a fluid medium to the velocity of the first correspondence table and stores the correspondence table; transmission time calculating module 12 is used to calculate the ultrasonic fluid along media direction downstream transmission time
and counter-transfer time
where, L is the ultrasonic path length walking, θ is the direction of the ultrasonic wave transmission direction of flow of the fluid medium angle, and 0 ° <θ <180 °, c is an ultrasonic non- speed of sound in the flowing medium, V is the flow rate of the fluid medium; first velocity calculation module 13 is configured based on the downstream transfer time and calculate the ultrasonic transmission time counter in the first fluid medium velocity
medium temperature acquisition module 14 is used to ultrasonic wave in a fluid medium based on the first velocity of the fluid medium temperature obtained.What deserves to be mentioned is; The temperature of fluid media (medium) obtains through searching above-mentioned correspondence table; Concrete exactly under the prerequisite that calculates first velocity of sound of ultrasound wave in fluid media (medium); Through searching the correspondence table that correspondence table is set up and memory module 11 is set up, and obtain according to the corresponding relation of first velocity of sound in this fluid media (medium) of fluid media (medium) temperature and ultrasound wave in the correspondence table.
The invention still further relates to a kind of energy meter that utilizes ultrasonic measurement fluid media (medium) method of temperature, Fig. 4 is the structural representation of this energy meter, and the energy meter in the present embodiment comprises measuring tube 50, following current transducer 512 and adverse current transducer 511; Wherein, measuring tube 50 is cylindric, and following current transducer 512 is separately positioned on measuring tube 50 diameter two ends with adverse current transducer 511, the one of which end is connected with said measuring tube; This energy meter also comprises control module 2; Control module 2 is connected with the other end of above-mentioned following current transducer 512 and adverse current transducer 511 respectively; Control module 2 comprises the said apparatus (promptly realizing the device of said method in the present embodiment) in the present embodiment; Control module 2 is used to control following current transducer 512 and adverse current transducer 511 transmitting-receiving ultrasonic signals; According to the following current transmission time and the adverse current transmission time of its calculated signals ultrasound wave longshore current body medium direction that obtains, and according to the following current transmission time obtained and first velocity of sound of adverse current transmission time calculating ultrasound wave in fluid media (medium), obtain the temperature of this fluid media (medium) through searching correspondence table.This energy meter also comprises display unit 3 and power supply 4; Wherein, Display unit 3 is connected with above-mentioned control module 2 and is used for showing that specifically, display unit 3 is used for parameters such as demonstration time, temperature, voltage and heat; Display unit 3 comprises LCD display or LED display, and power supply 4 is connected and is used for power supply with control module 2.The voltage of power supply 4 is DC voltage 10V ~ 24V or DC voltage 10V ~ 36V or alternating voltage 220V in the present embodiment.
Among Fig. 4, f is the flow direction of fluid media (medium), and L is the path of ultrasound wave walking, and θ is the flow direction angle of hyperacoustic transmission direction and fluid media (medium), and 0 °<θ<180 °, t
dBe the following current transmission time of ultrasound wave longshore current body medium direction, t
uBe the adverse current transmission time of ultrasound wave longshore current body medium direction, D is the interior diameter of measuring tube 50; What deserves to be mentioned is that the angle between ultrasonic transmission direction between following current transducer 512 and the adverse current transducer 511 and measuring tube 50 length directions is an acute angle.Adverse current transducer 511 receives the ultrasound wave that following current transducers 512 send and converts ultrasonic signal to electric signal and is sent to said control module 2; Following current transducer 512 receives the ultrasound wave that adverse current transducers 511 send and converts ultrasonic signal to electric signal and is sent to control module 2.Specifically; After power supply 4 is switched on; When following current transducer 512 Be Controlled unit 2 trigger; Following current transducer 512 sends ultrasound wave, ultrasound wave along predetermined path direction transmission (predetermined here path direction be exactly in fact the angle of the flow direction of hyperacoustic transmission direction and fluid media (medium) be θ, and 0 °<θ<180 °; The size of angle theta is confirmed by the relative position between following current transducer 512 and the adverse current transducer 511), above-mentioned adverse current transducer 511 receives the ultrasound wave that following current transducers 512 send and converts ultrasonic signal to electric signal and is sent to control module 2; Control module 2 calculates the following current transmission time t of ultrasound wave longshore current body medium direction according to its electric signal of obtaining
dAnd preserve, control module 2 triggers display unit 3 and shows following current transmission time t
dValue; When control module 2 triggers adverse current transducer 511; Adverse current transducer 511 sends ultrasound wave; Ultrasound wave is propagated along its reverse path in the downbeam transmission; Following current transducer 512 receives the ultrasound wave that adverse current transducers 511 send and converts ultrasonic signal to electric signal and is sent to control module 2, and control module 2 calculates the adverse current transmission time t of ultrasound wave longshore current body medium direction according to its electric signal of obtaining
uAnd preserve, control module 2 triggers display unit 3 and shows adverse current transmission time t
u Value.Control module 2 is according to following current transmission time t
dWith adverse current transmission time t
uCalculate first velocity of sound c ' of ultrasound wave in fluid media (medium), and find out the temperature of corresponding fluid media (medium), display unit 3 shows its temperature value.According to following current transmission time t
dWith adverse current transmission time t
uPoor, hyperacoustic transmission direction and the flow direction angle theta of fluid media (medium), the interior diameter D of measuring tube 50 and the flowing velocity V of fluid media (medium); Control module 2 calculates flow; And according to temperature and flow and then draw heat, display unit 3 shows its calorie values.
The invention still further relates to a kind of temperature measuring equipment, this temperature measuring equipment is thermometric instruments or temperature measuring instrument, and this temperature measuring equipment comprises temperature-measuring module, and this temperature-measuring module comprises the said apparatus in the present embodiment.
In a word, in the present embodiment, time (following current transmission time t
dWith adverse current transmission time t
u) measuring accuracy is higher, its precision reaches 10
-9The computational accuracy of (ns level), ultrasound wave first velocity of sound c ' in fluid media (medium) is higher, its deviation (
Wherein, Δ t is a transmission time difference, and promptly Δ t is following current transmission time t
dWith adverse current transmission time t
uPoor, Δ t=t
u-t
dT is an average transmission time,
) 10
-5In, the correspondence table among Fig. 2 in 0 ℃ ~ 75 ℃ scopes the temperature computation deviation 10
-4In.Energy meter in the present embodiment does not need mounting temperature sensor can obtain the temperature of fluid media (medium); Reduced the design cost of energy meter; Simultaneously; It has saved the qualification of mounting temperature sensor need perforates on pipeline, has reduced the installation difficulty of energy meter, so need not temperature sensor, saves cost, easy for installation.
The above embodiment has only expressed several kinds of embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with accompanying claims.
Claims (10)
1. a ultrasonic measurement fluid media (medium) method of temperature is characterized in that, comprises the steps:
A) set up the correspondence table of fluid media (medium) temperature and ultrasound wave first velocity of sound in said fluid media (medium) and store said correspondence table;
B) the following current transmission time
of calculating ultrasound wave longshore current body medium direction and adverse current transmission time
are wherein; L is the path of ultrasound wave walking; θ is the flow direction angle of hyperacoustic transmission direction and fluid media (medium); And 0 ° of < < 180 ° of θ; C is the velocity of sound of ultrasound wave in non-current medium, and V is the flowing velocity of fluid media (medium);
C) calculate first velocity of sound
of ultrasound wave in fluid media (medium) according to said following current transmission time and adverse current transmission time
D) first velocity of sound of the said ultrasound wave of foundation in fluid media (medium) obtains the temperature of said fluid media (medium).
2. ultrasonic measurement fluid media (medium) method of temperature according to claim 1; It is characterized in that said step D) in the temperature of fluid media (medium) be to obtain through the correspondence table of searching said fluid media (medium) temperature and ultrasound wave first velocity of sound in said fluid media (medium).
3. ultrasonic measurement fluid media (medium) method of temperature according to claim 2 is characterized in that the flowing velocity of said fluid media (medium) comprises 0.
4. a device of realizing ultrasonic measurement fluid media (medium) method of temperature as claimed in claim 1 is characterized in that, comprising:
Correspondence table is set up and memory module: be used for setting up fluid media (medium) temperature and ultrasound wave in the correspondence table of first velocity of sound of said fluid media (medium) and store said correspondence table;
The transmission time computing module: the following current transmission time
and the adverse current transmission time
that are used to calculate ultrasound wave longshore current body medium direction are wherein; L is the path of ultrasound wave walking; θ is the flow direction angle of hyperacoustic transmission direction and fluid media (medium); And 0 ° of < < 180 ° of θ; C is the velocity of sound of ultrasound wave in non-current medium, and V is the flowing velocity of fluid media (medium);
First velocity of sound computing module: be used for calculating first velocity of sound
of ultrasound wave at fluid media (medium) according to said following current transmission time and adverse current transmission time
Medium temperature acquisition module: the temperature that is used for obtaining in first velocity of sound of fluid media (medium) said fluid media (medium) according to said ultrasound wave.
5. device according to claim 4 is characterized in that, the temperature of said fluid media (medium) is to obtain through the correspondence table of searching said fluid media (medium) temperature and ultrasound wave first velocity of sound in said fluid media (medium).
6. energy meter that utilizes ultrasonic measurement fluid media (medium) method of temperature as claimed in claim 1; It is characterized in that; Comprise measuring tube cylindraceous, be separately positioned on following current transducer and adverse current transducer that said measuring tube diameter two ends, one of which end are connected with said measuring tube; Also comprise the control module that is connected with the other end of said following current transducer and adverse current transducer respectively; Said control module comprises device as claimed in claim 5; Said control module is used to control said following current transducer and adverse current transducer transmitting-receiving ultrasonic signal; According to the following current transmission time and the adverse current transmission time of its calculated signals ultrasound wave longshore current body medium direction that obtains; And, obtain the temperature of said fluid media (medium) through searching correspondence table according to the following current transmission time obtained and first velocity of sound of adverse current transmission time calculating ultrasound wave in fluid media (medium).
7. the energy meter of ultrasonic measurement fluid media (medium) temperature according to claim 6 is characterized in that, also comprises the display unit that is connected and is used to show with said control module, and the power supply that is connected and is used to supply power with said control module.
8. the energy meter of ultrasonic measurement fluid media (medium) temperature according to claim 7 is characterized in that, said adverse current transducer receives the ultrasound wave that said following current transducer sends and converts ultrasonic signal to electric signal and is sent to said control module; Said following current transducer receives the ultrasound wave that said adverse current transducer sends and converts ultrasonic signal to electric signal and is sent to said control module, and ultrasonic transmission direction between said following current transducer and the said adverse current transducer and the angle between the said measuring tube length direction are acute angle.
9. according to the energy meter of claim 7 or 8 described ultrasonic measurement fluid media (medium) temperature, it is characterized in that said power source voltage is DC voltage 10V ~ 24V or DC voltage 10V ~ 36V or alternating voltage 220V.
10. a temperature measuring equipment is characterized in that, said temperature measuring equipment is thermometric instruments or temperature measuring instrument, and said temperature measuring equipment comprises temperature-measuring module, and said temperature-measuring module comprises device as claimed in claim 5.
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| CN113155323A (en) * | 2020-01-22 | 2021-07-23 | 兰吉尔有限公司 | Energy meter and method for detecting heat or cold |
| CN117191139A (en) * | 2023-11-07 | 2023-12-08 | 青岛鼎信通讯科技有限公司 | Ultrasonic water meter |
| CN117470405A (en) * | 2023-12-27 | 2024-01-30 | 青岛积成电子股份有限公司 | Method for measuring fluid temperature based on ultrasonic flight time |
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| CN103900738A (en) * | 2014-01-18 | 2014-07-02 | 宁波百立康智能仪表有限公司 | Calorimeter suitable for detection of double-time measuring method |
| CN104215356A (en) * | 2014-05-13 | 2014-12-17 | 中国计量学院 | Ultrasonic-based pipeline fluid temperature measurement method |
| CN104729582A (en) * | 2015-03-07 | 2015-06-24 | 姜跃炜 | Temperature detection method for ultrasonic flow detection and ultrasonic flow metering device |
| CN106679745B (en) * | 2016-11-25 | 2020-05-15 | 广州立功科技股份有限公司 | Temperature compensation method and water flow detection method and system for ultrasonic water meter |
| CN106679745A (en) * | 2016-11-25 | 2017-05-17 | 广州周立功单片机科技有限公司 | Temperature compensation method and system and water flow detection method and system for ultrasonic water meter |
| CN106885609A (en) * | 2017-03-03 | 2017-06-23 | 安徽水联水务科技有限公司 | A kind of Ultrasonic water meter temperature correction without temperature sensor |
| CN106885609B (en) * | 2017-03-03 | 2019-09-06 | 安徽水联水务科技有限公司 | A kind of Ultrasonic water meter temperature correction of no temperature sensor |
| CN113155323A (en) * | 2020-01-22 | 2021-07-23 | 兰吉尔有限公司 | Energy meter and method for detecting heat or cold |
| CN111257887A (en) * | 2020-02-17 | 2020-06-09 | 自然资源部第一海洋研究所 | Underwater instrument attitude detection system and detection method thereof |
| CN111257887B (en) * | 2020-02-17 | 2021-06-15 | 自然资源部第一海洋研究所 | Underwater instrument attitude detection system and detection method thereof |
| CN112254835A (en) * | 2020-09-25 | 2021-01-22 | 宁波水表(集团)股份有限公司 | Water flow temperature measuring method based on ultrasonic water meter and ultrasonic water meter |
| CN117191139A (en) * | 2023-11-07 | 2023-12-08 | 青岛鼎信通讯科技有限公司 | Ultrasonic water meter |
| CN117470405A (en) * | 2023-12-27 | 2024-01-30 | 青岛积成电子股份有限公司 | Method for measuring fluid temperature based on ultrasonic flight time |
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Application publication date: 20121024 |