CN104019869B - The wireless automatic calibrator of fuel charger capacity of vacuum heat-preserving standard capacity measure - Google Patents
The wireless automatic calibrator of fuel charger capacity of vacuum heat-preserving standard capacity measure Download PDFInfo
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- CN104019869B CN104019869B CN201410157732.1A CN201410157732A CN104019869B CN 104019869 B CN104019869 B CN 104019869B CN 201410157732 A CN201410157732 A CN 201410157732A CN 104019869 B CN104019869 B CN 104019869B
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Abstract
A kind of fuel charger capacity wireless automatic calibrator of vacuum heat-preserving standard capacity measure, belong to volumetric(al) standards calibrating installation technical field, it is intended to solve the problems, such as that its cable material is easily lost the fuel charger capacity calibrating installation of existing standard capacity measure using communication cable transmission data.The data collection radio transmitter that it is used is installed in vacuum heat-preserving standard capacity measure main body by seated, data acquisition circuit and wireless sending module sealing are loaded in transmitter explosion-proof casing, data acquisition circuit is connected with muzzle temperature sensor and measuring device body temperature sensor is plugged in vacuum heat-preserving standard capacity measure main body and goes out muzzle thermometric borehole jack and upper cone thermometric borehole jack respectively, magnetic hysteresis stretches liquid level gauge equipped with signal wire connection data acquisition circuit, the output of data acquisition circuit is connected by digital communication port with wireless sending module, wireless sending module and wireless receiver, monitor computer connection.Its simple structure, suitable for examining and determine various fuel charger, liquid measuring device etc..
Description
Technical field
The invention belongs to a kind of fuel charger of vacuum heat-preserving standard capacity measure in volumetric(al) standards calibrating installation technical field
Capacity calibrating installation.
Background technology
With the continuous development and technological progress of standard metering instrument, to the technology of fuel oil refueling machinery capacity calibrating installation
It is required that also more and more higher.In known technology, the fuel charger capacity calibrating installation of existing standard capacity measure mainly has standard
Metal tank main body and thermo detector are formed, by manually reading standard capacity measure liquid level, going out in muzzle oil temperature and container
Oil temperature, measurement capacity value is then obtained by the method manually calculated, also has using automatic data collection temperature sensor, passes through communication
Cable transfers data to computer, and its major defect is due to that standard capacity measure is not incubated, and test measurement is by environment temperature
Have a great influence, especially artificial reading and calculating, artificial error in reading be present, and process is slow, operating efficiency is low；And use logical
Cable transmission data is interrogated, cable material is easily lost, poor in anti-explosion property, is only capable of carrying out separate unit calibrating, and unitary construction is complicated, also gives
Practical application is made troubles.
The content of the invention
For overcome the deficiencies in the prior art, the fuel charger capacity calibrating installation for solving existing standard capacity measure uses
The problem of its cable material of communication cable transmission data is easily lost.It is simple and practical it is an object of the present invention to provide unitary construction, protect
Warm nature can be good, and test measurement is influenced by ambient temperature smaller, and data are transmitted without communication cable, and measurement is accurate, can a machine carry out
The calibrating operation of more measuring devices, automatic record data, automaticity is high, the oiling of novel standard metal tank easy to use
Machine capacity automatic calibrator.
Technical scheme is used by the present invention solves the above problems：
A kind of wireless automatic calibrator of fuel charger capacity of vacuum heat-preserving standard capacity measure, it is provided with：Vacuum heat-preserving
Standard capacity measure main body, data collection radio transmitter, wireless receiver, monitoring computer, data collection radio transmitter
It is installed in by seated in vacuum heat-preserving standard capacity measure main body, the liquid level sign of vacuum heat-preserving standard capacity measure main body installing
Device be magnetic hysteresis (causes) stretch liquid level gauge, data collection radio transmitter including transmitter explosion-proof casing, go out muzzle oil temperature sensor,
Measuring device main body oil temperature sensor and data Acquisition Circuit, wireless sending module, data acquisition circuit and wireless sending module sealing
Loaded in transmitter explosion-proof casing, data acquisition circuit input is connected with out muzzle oil temperature sensor and measuring device main body oil temperature passes
What sensor was respectively cooperating with being plugged in vacuum heat-preserving standard capacity measure main body goes out muzzle thermometric borehole jack and upper cone thermometric borehole jack, magnetic
Input of the stagnant flexible liquid level gauge equipped with signal wire connection data acquisition circuit, the output of data acquisition circuit pass through digital communication
Port is connected with wireless sending module, and wireless sending module is connected by radio communication with wireless receiver, wireless receiver
Output by USB interface with monitoring computer be connected；
The data acquisition circuit of the data collection radio transmitter include muzzle oil temperature sensor data acquisition circuit,
The flexible liquid level gauge data acquisition circuit of measuring device main body oil temperature sensor data acquisition circuit, magnetic hysteresis and wireless sending module difference
For：
I goes out muzzle oil temperature sensor data acquisition circuit, and it is provided with：Go out muzzle oil temperature sensor CG-1, resistance R1-R5,
Electric capacity C1, operational amplifier N1-N2 and N7, go out muzzle oil temperature sensor CG-1 one end and by resistance R1-R5 and operation amplifier
The output end SENSOR1 that device N1-N2 connections form PT100 excitations constant-current source circuit -1 is connected, the other end and circuit ground GND
It is connected, PT100 excitations are also connected to operational amplifier N7 in-phase input end with the output end SENSOR1 of constant-current source circuit -1,
GND's operational amplifier N7 inverting input is connected with circuit, and instrumentation amplifier N7 is muzzle oil temperature sensor
Output signal provides a suitable gain amplifier, and electric capacity C1 is connected across instrumentation amplifier N7 in-phase end and end of oppisite phase,
High-frequency noise is filtered out for instrumentation amplifier N7 inputs, resistance R1 one end is connected with 5V voltage references N5, by voltage reference
N5 is that PT100 excitations constant-current source circuit -1 provides stable and accurate voltage reference；
II measuring device main body oil temperature sensor data acquisition circuits, it includes：Measuring device main body oil temperature sensor CG-2, resistance
R6-R10, operational amplifier N3-N4, resistance R6-R10 and operational amplifier N3-N4 and N8, resistance R6-R10, operational amplifier
N3-N4 connections composition PT100 constant-current source circuit -2, the output end of the measuring device main body oil temperature sensor data acquisition circuit
SENSOR2 is connected with measuring device main body oil temperature sensor CG-2 one end, measuring device main body oil temperature sensor the CG-2 other end and electricity
Road GND be connected；Output end SENSOR2 is also connected to operational amplifier N8 in-phase input end simultaneously, operational amplifier N8's
GND's inverting input is connected with circuit, and operational amplifier N8 provides for measuring device main body oil temperature sensor CG-2 output signal
One suitable gain amplifier；Electric capacity C2 is connected across operational amplifier N8 in-phase end and end of oppisite phase, is that operational amplifier N8 is defeated
The one end for entering to filter out high-frequency noise resistance R6 is connected with 5V voltage references N5, is PT100 constant-current source circuits -2 by voltage reference N5
Stable and accurate voltage reference is provided；
The flexible liquid level gauge data acquisition circuit of III magnetic hysteresis, it includes：The flexible liquid level gauge CSYWJ of magnetic hysteresis, operational amplifier
N9, resistance R11, electric capacity C3, the flexible liquid level gauge CSYWJ of magnetic hysteresis output end OUT+ and OUT- are same with operational amplifier N9 respectively
Phase input is connected with inverting input, and resistance R11 is connected across operational amplifier N9 in-phase end and end of oppisite phase, is magnetostriction
The current signal of liquid level gauge output provides current return circuit, and electric capacity C3 is in parallel with resistance R11；
IV wireless sending modules, it includes：Single-chip microcomputer N6, integrated RF transceiving chip N10, operational amplifier N7-N9,
Dual-mode antenna T1, operational amplifier N7-N9 output end analog input end A/D1, A/D2 and A/D3 phase with single-chip microcomputer N6 respectively
Even, single-chip microcomputer N6 data communication port CLK and the D_I/O data communication port with integrated RF transceiving chip N10 respectively
DATA_CLK is connected with DATA_I/O, and integrated RF transceiving chip N10 output end RF_OUT is connected with dual-mode antenna T1, to penetrate
Frequency signal path output, there is crystal oscillator X1 in the integrated RF transceiving chip N10 input of OSC1 and OSC2 two bridging, received for radio frequency
Hair provides clock signal, and single-chip microcomputer N6 reference input REF is also connected with voltage reference N5 simultaneously, is inside single-chip microcomputer N6
A/D modular converters provide Voltage Reference；
The wireless receiver includes：Integrated RF transceiving chip N11, USB bridging chip N12, dual-mode antenna T2, USB
PORT COM data wire connector USBT+ and USBT-, dual-mode antenna T2 are connected to penetrating for integrated RF transceiving chip N11
Frequency input terminal RF_IN, for the input channel of radiofrequency signal, integrated RF transceiving chip N11 data communication port DATA_CLK
It is connected respectively with USB bridging chips N12 data communication port D_CLK and D_I/O with DATA_I/O, integrated RF transceiving chip
N11 input RF_OUT is connected with dual-mode antenna T2, inputs path for radiofrequency signal, crystal oscillator X2 is connected across integrated RF transmitting-receiving
The chip N11 input of OSC1 and OSC2 two, clock signal, USB bridging chips N12 data output end are provided for radio-frequency receiving-transmitting
D+ and D- is connected with the USB interface of USB PORT COM data wire connectors USBT+ and USBT- directly with monitoring computer
The D+ at end is connected with D-.
The wireless automatic calibrator of fuel charger capacity of above-mentioned vacuum heat-preserving standard capacity measure, described single-chip microcomputer N6 are
C8051F single-chip microcomputers, integrated RF transceiving chip N10 are ADF020 or ADF7020 integrated RF transceiving chips；Described integrate is penetrated
Frequency transceiving chip N11 is ADF020 or ADF7020 integrated RF transceiving chips, and USB bridging chips N12 is CP2102 type USB bridges
Connect chip.
The wireless automatic calibrator of fuel charger capacity of above-mentioned vacuum heat-preserving standard capacity measure, the wireless receiver and
One, computer of monitoring can coordinate corresponding 1~several vacuum heat-preserving standard metal amounts that data collection radio transmitter is housed of calibrating
Device.
The automatic calibrator of the present invention in use, being connected according to design requirement installing, be responsible for by the flexible liquid level gauge of magnetic hysteresis
Measure the liquid level in vacuum heat-preserving standard capacity measure, two temperature sensors are each responsible for measuring muzzle oil temperature and true
The signal output that will gather of oil temperature in sky insulation standard capacity measure, the flexible liquid level gauge of magnetic hysteresis and two temperature sensors gives number
According to Acquisition Circuit, data acquisition circuit changes into these three collection signal outputs the test data of certain format, is sent to nothing
Line sending module；Wireless sending module will be sent to wireless receiving module after data encoding by radio wave；Wireless receiving mould
Block will send monitoring computer to after the encoded signal received decoding by USB port；The metering prison run on monitoring computer
Software is controlled to show the data received on the computer screen for measurement verification behaviour in the form of graphic animations and experiment curv
Make personnel's real time inspection metering process.Measurement verification operating personnel can be by measurement monitoring software interface【Start to measure】Press
Button log-on data gatherer process.Graph curve real-time display temperature measurement result, operating personnel can be allowed according to curvilinear motion feelings
Condition judges whether muzzle oil temperature reading has been stablized, and after muzzle oil temperature stable reading is gone out, operating personnel can be counted by clicking on
Measure on monitoring software interface【Record oil gun oil temperature】The muzzle oil temperature that goes out that button records now is used as calculating data.Work as oiling
Terminate and after liquid level stabilizing, measurement monitoring software can record oil temperature in liquid level and standard measuring device now automatically.Then
Click on measurement monitoring software interface【Calculate】Button, software is by foundation《Measurement verification regulations》In formula and measurement data
It is automatic to calculate " actual volume value " and " measurement error ", and result of calculation is automatically displayed in the form on software interface.It is more
During secondary or more measurement, the process is repeated.After whole verification process terminates, click on measurement monitoring software interface
【Preserve】Auto-writing is entered in default measurement verification list, protected in a manner of Excel file by button, whole measurement results
Deposit.To meet the needs of system self-aligning, " metering neck scale division value ", " nominal appearance are also provided with measurement monitoring software interface
The input window such as amount ", " measuring device type ", " oil product type ", for the input of calibration data, system uses newly automatically after input
Calibration data is calculated.Either under conditions of summer and winter oil benign environment temperature difference are larger, can normally it enter
The calibration operations such as the online fuel charger of row indoor or outdoors, liquid measuring device.
Because present invention design employs above-mentioned technical proposal, the existing oiling for solving existing standard capacity measure
The problem of machine capacity calibrating installation uses its cable material of communication cable transmission data to be easily lost.Also tried by actual tests for several times
Shown with result, it has unitary construction simple and practical compared with prior art, and automaticity is high, good heat insulating, test
Measure influenced by ambient temperature smaller, data transmitted without communication cable, measurement is accurate, can a monitoring computer carry out more amounts
The calibrating operation of device, automatic record data, it is easy to use the advantages that, suitable for examining and determine various fuel charger, liquid measuring device etc..
Brief description of the drawings
The present invention is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the structure diagram of the embodiment of the present invention.
Fig. 2 is the measurement monitoring software interface enlarged drawing of Fig. 1 monitoring computers.
Fig. 3 is the basic circuit diagram of data acquisition circuit and wireless sending module in the present invention.
Fig. 4 is the basic circuit diagram of wireless receiver in the present invention.
Fig. 5 is the basic circuit diagram of data collection radio transmitter embodiment in the present invention.
Fig. 6 is the basic circuit diagram of wireless receiver embodiment in the present invention.
In accompanying drawing respectively marked as：1 vacuum heat-preserving standard capacity measure main body；2 data collection radio transmitters；3 seateds；4
Wireless receiver；5 monitoring computers.
Embodiment
Such as accompanying drawing 1-4 illustrated embodiments, the present invention is provided with：Vacuum heat-preserving standard capacity measure main body 1, data collection radio
Transmitter 2, wireless receiver 4, monitoring computer 5, data collection radio transmitter 2 are installed in vacuum heat-preserving standard by seated 3
In metal tank main body 1, the liquid level marking device that vacuum heat-preserving standard capacity measure main body 1 is installed is the flexible liquid level gauge of magnetic hysteresis
CSYWJ, data collection radio transmitter 2 include：Transmitter explosion-proof casing, go out muzzle oil temperature sensor CG-1, measuring device bulk oil
Temperature sensor CG-2 and data acquisition circuit, wireless sending module, data acquisition circuit and wireless sending module sealing are loaded on hair
Send in device explosion-proof casing, the connection of data acquisition circuit input goes out muzzle oil temperature sensor CG-1 and measuring device main body oil temperature sensing
What device CG-2 was respectively cooperating with being plugged in vacuum heat-preserving standard capacity measure main body 1 goes out muzzle thermometric borehole jack and upper cone thermometer hole
Set, inputs of the flexible liquid level gauge CSYWJ of magnetic hysteresis equipped with signal wire connection data acquisition circuit, the output of data acquisition circuit are led to
Digital communication port to be crossed with wireless sending module to be connected, wireless sending module is connected by radio communication with wireless receiver 4,
The output of wireless receiver 4 is connected by USB interface with monitoring computer 5.
Referring to the embodiment of accompanying drawing 5, the data acquisition circuit of data collection radio transmitter 2 of the present invention includes muzzle oil temperature
The flexible liquid level gauge data acquisition circuit of sensor data acquisition circuit, measuring device main body oil temperature sensor data acquisition circuit, magnetic hysteresis
It is respectively with wireless sending module：
I goes out muzzle oil temperature sensor data acquisition circuit, and it is provided with：Go out muzzle oil temperature sensor CG-1, resistance R1-R5,
Electric capacity C1, operational amplifier N1-N2 and N7, go out muzzle oil temperature sensor CG-1 one end and by resistance R1-R5 and operation amplifier
The output end SENSOR1 that device N1-N2 connections form PT100 excitations constant-current source circuit -1 is connected, the other end and circuit ground GND
It is connected, PT100 excitations are also connected to operational amplifier N7 in-phase input end with the output end SENSOR1 of constant-current source circuit -1,
GND's operational amplifier N7 inverting input is connected with circuit, and instrumentation amplifier N7 is muzzle oil temperature sensor
Output signal provides a suitable gain amplifier, and electric capacity C1 is connected across instrumentation amplifier N7 in-phase end and end of oppisite phase,
High-frequency noise is filtered out for instrumentation amplifier N7 inputs, resistance R1 one end is connected with 5V voltage references N5, by voltage reference
N5 is that PT100 excitations constant-current source circuit -1 provides stable and accurate voltage reference；
II measuring device main body oil temperature sensor data acquisition circuits, it includes：Measuring device main body oil temperature sensor CG-2, resistance
R6-R10, operational amplifier N3-N4, resistance R6-R10 and operational amplifier N3-N4, N8, resistance R6-R10, operational amplifier
N3-N4 connections composition PT100 constant-current source circuit -2, the output end of the measuring device main body oil temperature sensor data acquisition circuit
SENSOR2 is connected with measuring device main body oil temperature sensor CG-2 one end, measuring device main body oil temperature sensor the CG-2 other end and electricity
Road GND be connected；SENSOR2 ends are also connected to operational amplifier N8 in-phase input end simultaneously, and operational amplifier N8's is anti-phase
GND's input is connected with circuit, and operational amplifier N8 provides one for measuring device main body oil temperature sensor CG-2 output signal
Suitable gain amplifier；Electric capacity C2 is connected across operational amplifier N8 in-phase end and end of oppisite phase, for operational amplifier N8 input filters
Except high-frequency noise resistance R6 one end is connected with 5V voltage references N5, provided by voltage reference N5 for PT100 constant-current source circuits -2
Stable and accurate voltage reference；
The flexible liquid level gauge data acquisition circuit of III magnetic hysteresis, it includes：The flexible liquid level gauge CSYWJ of magnetic hysteresis, operational amplifier
N9, resistance R11, electric capacity C3, the flexible liquid level gauge CSYWJ of magnetic hysteresis output end OUT+ and OUT- are same with operational amplifier N9 respectively
Phase input is connected with inverting input, and resistance R11 is connected across operational amplifier N9 in-phase end and end of oppisite phase, is magnetostriction
The current signal of liquid level gauge output provides current return circuit, and electric capacity C3 is in parallel with resistance R11；
IV wireless sending modules, it includes：C8051F single-chip microcomputer N6, ADF020 integrated RF transceiving chips N10, computing
Amplifier N7-N9, dual-mode antenna T1, operational amplifier N7-N9 output end respectively the analog input end A/D1 with single-chip microcomputer N6,
A/D2 is connected with A/D3, and C8051F single-chip microcomputers N6 data communication port CLK and D_I/O receive and dispatch with ADF020 integrated RFs respectively
Chip N10 data communication port DATA_CLK is connected with DATA_I/O, ADF020 integrated RF transceiving chips N10 output end
RF_OUT is connected with dual-mode antenna T1, is radiofrequency signal outgoing route, ADF020 integrated RF transceiving chips N10 OSC1 and
The bridging of the inputs of OSC2 two has crystal oscillator X1, and clock signal, while C8051F single-chip microcomputers N6 reference input are provided for radio-frequency receiving-transmitting
End REF is also connected with voltage reference N5, and Voltage Reference is provided for the A/D modular converters inside C8051F single-chip microcomputers N6.
Referring to the embodiment of accompanying drawing 6, wireless receiver of the invention includes：ADF7020 integrated RF transceiving chips N11,
CP2102USB bridging chips N12, dual-mode antenna T2, USB PORT COM data wire connector USBT+ and USBT-, transmitting-receiving
Antenna T2 is connected to integrated RF transceiving chip N11 rf inputs RF_IN, for the input channel of radiofrequency signal, ADF7020
Integrated RF transceiving chip N11 data communication port DATA_CLK and DATA_I/O data with USB bridging chips N12 respectively
PORT COM D_CLK is connected with D_I/O, and integrated RF transceiving chip N11 input RF_OUT is connected with dual-mode antenna T2, is
Radiofrequency signal inputs path, and crystal oscillator X2 is connected across the integrated RF transceiving chip N11 input of OSC1 and OSC2 two, is received for radio frequency
Hair provides clock signal, and CP2102USB bridging chips N12 data output end D+ and D- are connected with USB PORT COM data wires
The D+ and D- at the USB interface end of connector USBT+ and USBT- directly with monitoring computer are connected.
Referring to the embodiment of accompanying drawing 4, the wireless automatic Verification of fuel charger capacity of vacuum heat-preserving standard capacity measure of the invention
Device, the wireless receiver and one, computer of monitoring can coordinate corresponding several of calibrating that data collection radio transmitter is housed
Vacuum heat-preserving standard capacity measure.
Claims (2)
1. a kind of wireless automatic calibrator of fuel charger capacity of vacuum heat-preserving standard capacity measure, it is provided with vacuum heat-preserving standard
Metal tank main body (1), it is characterised in that be additionally provided with data collection radio transmitter (2), wireless receiver (4), monitoring calculation
Machine (5), data collection radio transmitter (2) are installed in vacuum heat-preserving standard capacity measure main body (1) by its seated (3), very
The liquid level marking device that sky is incubated standard capacity measure main body (1) installing is the flexible liquid level gauge (CSYWJ) of magnetic hysteresis, data collection radio
Transmitter (2) include transmitter explosion-proof casing, go out muzzle oil temperature sensor (CG-1), measuring device main body oil temperature sensor (CG-2) and
Data acquisition circuit, wireless sending module, data acquisition circuit and wireless sending module sealing are loaded in transmitter explosion-proof casing,
The connection of data acquisition circuit input goes out muzzle oil temperature sensor (CG-1) and measuring device main body oil temperature sensor (CG-2) respectively
Coordinate be plugged in vacuum heat-preserving standard capacity measure main body (1) to go out muzzle thermometric borehole jack and upper cone thermometric borehole jack, magnetic hysteresis is stretched
Input of the contracting liquid level gauge (CSYWJ) equipped with signal wire connection data acquisition circuit, the output of data acquisition circuit pass through numeral
PORT COM is connected with wireless sending module, and wireless sending module is connected by radio communication with wireless receiver (4), wirelessly
The output of receiver (4) is connected by USB interface with monitoring computer (5)；
The data acquisition circuit of the data collection radio transmitter (2) include muzzle oil temperature sensor data acquisition circuit,
The flexible liquid level gauge data acquisition circuit of measuring device main body oil temperature sensor data acquisition circuit, magnetic hysteresis and wireless sending module difference
For：
I goes out muzzle oil temperature sensor data acquisition circuit, and it is provided with：Go out muzzle oil temperature sensor (CG-1), resistance R1, resistance
R2, resistance R3, resistance R4, resistance R5, electric capacity C1, operational amplifier N1, operational amplifier N2, operational amplifier N7, go out muzzle
One end of oil temperature sensor (CG-1) with by resistance R1, resistance R2, resistance R3, resistance R4, resistance R5 and operational amplifier N1, fortune
Calculate amplifier N2 connections form PT100 excitations constant-current source circuit -1 output end SENSOR1 is connected, the other end and circuit
GND is connected, and PT100 excitations are also connected to operational amplifier N7 homophase input with the output end SENSOR1 of constant-current source circuit -1
End, GND's operational amplifier N7 inverting input is connected with circuit, and operational amplifier N7 is muzzle oil temperature sensor defeated
Go out signal and one suitable gain amplifier is provided, electric capacity C1 is connected across operational amplifier N7 in-phase end and end of oppisite phase, is computing
Amplifier N7 inputs filter out high-frequency noise, and resistance R1 one end is connected with 5V voltage references (N5), is by voltage reference (N5)
PT100 excitations provide stable and accurate voltage reference with constant-current source circuit -1；
II measuring device main body oil temperature sensor data acquisition circuits, it includes：Measuring device main body oil temperature sensor (CG-2), resistance R6,
Resistance R7, resistance R8, resistance R9, resistance R10 and operational amplifier N3, operational amplifier N4, operational amplifier N8, resistance R6,
Resistance R7, resistance R8, resistance R9, resistance R10 and operational amplifier N3, operational amplifier N4 connect composition PT100 constant-current source electricity
Road -2, the output end SENSOR2 and measuring device main body oil temperature sensor (CG- of the measuring device main body oil temperature sensor data acquisition circuit
2) one end is connected, and GND's other end of measuring device main body oil temperature sensor (CG-2) is connected with circuit；Output end SENSOR2 is same
When be also connected to operational amplifier N8 in-phase input end, GND's operational amplifier N8 inverting input is connected with circuit, fortune
Calculate amplifier N8 and provide a suitable gain amplifier for the output signal of measuring device main body oil temperature sensor (CG-2)；Electric capacity C2 across
Operational amplifier N8 in-phase end and end of oppisite phase are connected on, the resistance R6 of high-frequency noise one end is filtered out for operational amplifier N8 inputs
It is connected with 5V voltage references (N5), is that PT100 constant-current source circuits -2 provide stable and accurate voltage base by voltage reference (N5)
It is accurate；
The flexible liquid level gauge data acquisition circuit of III magnetic hysteresis, it includes：Magnetic hysteresis stretch liquid level gauge (CSYWJ), operational amplifier N9,
Resistance R11, electric capacity C3, magnetic hysteresis stretch liquid level gauge (CSYWJ) output end OUT+ and OUT- it is same with operational amplifier N9 respectively
Phase input is connected with inverting input, and resistance R11 is connected across operational amplifier N9 in-phase end and end of oppisite phase, is magnetostriction
The current signal of liquid level gauge output provides current return circuit, and electric capacity C3 is in parallel with resistance R11；
IV wireless sending modules, it includes：Single-chip microcomputer (N6), integrated RF transceiving chip N10, operational amplifier N7, computing are put
Big device N8, operational amplifier N9, dual-mode antenna T1, operational amplifier N7, operational amplifier N8, operational amplifier N9 output end
Analog input end A/D1, A/D2 and A/D3 with single-chip microcomputer (N6) are connected respectively, the data communication port CLK of single-chip microcomputer (N6) and
D_I/O is connected with integrated RF transceiving chip N10 data communication port DATA_CLK and DATA_I/O respectively, and integrated RF is received
Hair chip N10 output end RF_OUT is connected with dual-mode antenna T1, is radiofrequency signal outgoing route, in integrated RF transceiving chip
The N10 input of OSC1 and OSC2 two bridging has crystal oscillator (X1), and clock signal, the reference of single-chip microcomputer (N6) are provided for radio-frequency receiving-transmitting
Input REF is also connected with voltage reference (N5) simultaneously, and Voltage Reference is provided for the internal A/D modular converters of single-chip microcomputer (N6)；
The wireless receiver includes integrated RF transceiving chip N11, USB bridging chip N12, dual-mode antenna T2, USB communication terminal
Mouth data wire connector (USBT+, USBT-), dual-mode antenna T2 are connected to integrated RF transceiving chip N11 radio frequency input
RF_IN is held, for the input channel of radiofrequency signal, integrated RF transceiving chip N11 data communication port DATA_CLK and DATA_
I/O is connected with USB bridging chips N12 data communication port D_CLK and D_I/O respectively, and integrated RF transceiving chip N11's is defeated
Enter to hold RF_OUT to be connected with dual-mode antenna T2, input path for radiofrequency signal, crystal oscillator (X2) is connected across integrated RF transceiving chip
The N11 input of OSC1 and OSC2 two, clock signal is provided for radio-frequency receiving-transmitting, USB bridging chips N12 data output end D+ and
D- is connected with the USB interface end of USB PORT COM data wire connectors (USBT+, USBT-) directly with monitoring computer
D+ is connected with D-.
2. the wireless automatic calibrator of fuel charger capacity of vacuum heat-preserving standard capacity measure according to claim 1, its
It is characterised by, the wireless receiver (4) and (5) one, computer of monitoring can coordinate corresponding calibrating 1~several to be adopted equipped with data
Collect the vacuum heat-preserving standard capacity measure of radio transmitter (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410157732.1A CN104019869B (en) | 2014-04-18 | 2014-04-18 | The wireless automatic calibrator of fuel charger capacity of vacuum heat-preserving standard capacity measure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410157732.1A CN104019869B (en) | 2014-04-18 | 2014-04-18 | The wireless automatic calibrator of fuel charger capacity of vacuum heat-preserving standard capacity measure |
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| Publication Number | Publication Date |
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| CN104019869A CN104019869A (en) | 2014-09-03 |
| CN104019869B true CN104019869B (en) | 2017-11-21 |
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| CN105928726A (en) * | 2016-06-17 | 2016-09-07 | 无锡市瑞丰精密机电技术有限公司 | Internet-based oiling machine calibration device |
| CN117433613A (en) * | 2023-12-08 | 2024-01-23 | 中国计量科学研究院 | Automatic verification system for fuel dispenser |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201327398Y (en) * | 2008-11-21 | 2009-10-14 | 北京怡诚机电设备公司 | Safety monitoring device |
| CN103026182A (en) * | 2010-04-30 | 2013-04-03 | 吉尔巴科公司 | Fuel dispenser |
| CN203811247U (en) * | 2014-04-18 | 2014-09-03 | 海兴县顺达计量仪器厂 | Automatic oiling machine capacity wireless calibrating device for vacuum heat-insulated standard metal measuring vessel |
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| CN104019869A (en) | 2014-09-03 |
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