CN203310718U - Device for measuring density and liquid level height of engine fuel oil - Google Patents
Device for measuring density and liquid level height of engine fuel oil Download PDFInfo
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- CN203310718U CN203310718U CN2013202538537U CN201320253853U CN203310718U CN 203310718 U CN203310718 U CN 203310718U CN 2013202538537 U CN2013202538537 U CN 2013202538537U CN 201320253853 U CN201320253853 U CN 201320253853U CN 203310718 U CN203310718 U CN 203310718U
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Abstract
The utility model provides a device for measuring the density and the liquid level height of engine fuel oil, relating to the technical field of engine measurement. The device comprises a data acquisition unit arranged in a fuel oil tank, wherein the data acquisition unit is used for acquiring a pressure value of the position in which the data acquisition unit is positioned; the data acquisition unit is used for sending acquired data to an A/D (Analogue/Digital) converter and transmitting data converted by the A/D converter to a single chip microcomputer; the calculation of the liquid density and the liquid level height inside the single chip microcomputer are carried out and the processed data are stored by a storage chip and are sent to a measurer by an output module. According to the device provided by the utility model, when the liquid level height is output, the density in the process of measuring the liquid level height is output at the same time so as to provide parameters for calculating a standard volume in the follow-up step.
Description
Technical field
The utility model relates to the locomotive field of measuring technique, is specifically related to a kind of device of measuring locomotive fuel density and liquid level.
Background technology
Locomotive fuel oil density is used the reading of petroleum densitmeter to measure at present, can not measure in real time.And traditional measurement mechanism is same can measure the height that fuel density reaches fuel level under this density simultaneously.As the patent No., be 200810137152.0; a kind of differential pressure type flow densimeter underground is disclosed; this differential pressure type flow densimeter underground comprises differential pressure pick-up; the differential pressure pick-up upper and lower end be connected with hollow on connecting pipe; the upper surface of the hollow and differential pressure pick-up of upper and lower connecting pipe forms upper and lower protection chamber, and upper and lower connecting pipe upper and lower side lays respectively at upper and lower pressure-sensitive mouth place.This instrument utilizes a differential pressure pick-up just can realize flow and the density measure of downhole fluid; The patent No. is 201120504299.6, discloses a kind of novel online differential density meter physical construction, comprises the measuring sonde that two splits arrange, and is provided with a capillary between two measuring sondes, and two measuring sondes all are inclined upwardly; Two measuring sondes include Measure Tube and sensor, and an end of Measure Tube is connected on pipe under test, and the other end links together by flange and described sensor, and sensor is connected with main frame; The patent No. is 201120513296.9 for another example, a kind of gradiomanometer is disclosed, comprise that two ends are provided with the outer tube of sheath, one end of outer tube is probe, probe is provided with upward pressure mouth and the downforce mouth that separates a determining deviation, between upward pressure mouth and downforce mouth, is connected with the kapillary that injects silicone oil, and probe inside is connected with differential pressure pickup, in outer tube, separately be provided with processing of circuit, comprise the power supply of probe and the single-chip microcomputer that carries out the data processing; Above three kinds of densitometers all can't be measured the height of liquid level.
Number of patent application is 99231001.6 for another example, discloses a kind of liquid-level detecting sensor, comprises signal acquisition circuit, shadow shield, buoy and light shield.The infrared signal of infrared-emitting diode emission is to the liquid level float reflecting surface, and its reflected signal is received to signal acquisition circuit by infrared receiving diode, realizes the Detection task of liquid level; The patent No. is 201210326279.3, disclose a kind of fuel tank liquid level height measuring device, comprised the scale bar of vertical extension, described scale bar has upper and lower two ends, the scale value of described scale bar increases from top to bottom gradually, is provided with the first conductor rope ring in scale bar bottom; Be provided with the tightrope of fixation mark point, tightrope is from the first conductor rope ring, passing, and described fixation mark point is for the scale value on indicating graduation bar when measuring liquid level; And the float be fixedly connected with tightrope, float can swim in the liquid level place under buoyancy.The patent No. is 94228117.9, discloses a kind of tank car liquidometer, has overcome prior art and has measured liquid level reading difficulty, the problem that error is large with instruments such as coil of strip dipstick or iron staff, bamboo poles.Be characterised in that it has a sounding rod, liquid level tube of the outer installation of sounding rod, liquid level tube is equipped with outer sleeve outward, in the upper end of liquid level tube and outer sleeve, latch mechanism is installed, and spiral lifting cover is installed and with the measuring head mechanism of inlet opening in the lower end of liquid level tube and outer sleeve.During work, the measuring instrument lower end is stretched in pot liquid, when liquid is steady in liquid level tube, by cone and the coordinating of sealing shroud of sounding rod lower end realizing sealing, can direct reading.Above three kinds of devices can be measured liquid level, but can't measure the locomotive fuel density.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of can measure the locomotive fuel density and the measurement locomotive fuel density of liquid level and the device of liquid level under this density in real time.
Technical problem to be solved in the utility model realizes by the following technical solutions:
A kind of device of measuring locomotive fuel density and liquid level, comprise the data acquisition unit be arranged in fuel tank, described data acquisition unit is used for gathering the force value of position, the data that described data acquisition unit will collect send to A/D converter, data transmission after the A/D converter conversion is to single-chip microcomputer, in single-chip microcomputer inside, carry out the calculating of fluid density and liquid level, the data after processing are utilized storage chip to store and are sent to the gauger by output module.
Described data acquisition unit comprises two independently pressure transducer A and pressure transducer B.
Between described pressure transducer A and pressure transducer B, has certain difference in height.
Described two have the pressure transducer A of difference in height and the inside that sensor B is contained in respectively fuel oil box.
Described output module is comprised of the RS485 communication interface, the control end pin of control chip U2 in the RS485 communication interface is kept to often low, control chip can receive external command at any time, when receiving end receives the order that needs the transmission data, and the conversion of Single-chip Controlling A/D converter, transmission data, the single-chip microcomputer its data is processed, the data storage, control chip control end pin sets high simultaneously, sends data, after data sent and finish, control end set low, wait command.
Described pressure transducer A and pressure transducer B are Voltage-output type pressure transducer, and output voltage is 0-5V, and range is 0-10KPa, and the pressure signal that sensor will collect converts voltage signal to and sends to A/D converter.
Described A/D converter adopts ADS1110 serial a/d converter, and supply voltage is 2.7V-5.5V, and precision is 20.48V ± 0.005%.
The data line SDA1 of described A/D converter and clock line SCL1 are connected to the I/O interface of single-chip microcomputer, by software control clock and data transmission.
Described single-chip microcomputer adopts ATmega8, and crystal oscillator adopts the external crystal-controlled oscillation of 4MHz.
Described storage chip adopts the FM24V10 ferroelectric memory.
The beneficial effects of the utility model are:
1. locomotive fuel oil density is used the reading of petroleum densitmeter to measure at present, can not measure in real time.The utility model can be realized real-time detection;
2. the quality of locomotive fuel oil is relevant with density and volume, some scheme is measured liquid height by resistance-type or capacitance level transducer, but can not measure fluid density, and the density of locomotive fuel oil is larger with temperature and batch variation, can not ignore, the utility model can density measurement;
3. the numerical value that uses two pressure transducers to measure can should be demonstrate,proved mutually, if difference exceeds zone of reasonableness, this reading can be abandoned, and improves measuring accuracy.
4. can be in the output liquid level, the density when this liquid level is measured in output simultaneously, for the subsequent calculations standard volume provides parameter.
The accompanying drawing explanation
Fig. 1 is the utility model functional-block diagram;
Fig. 2 is the utility model scheme of installation.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As Fig. 1, shown in Figure 2, a kind of device of measuring locomotive fuel density and liquid level, comprise the data acquisition unit be arranged in fuel tank, data acquisition unit is used for gathering the force value of position, the data that data acquisition unit will collect send to A/D converter, data transmission after the A/D converter conversion is to single-chip microcomputer, in single-chip microcomputer inside, carry out the calculating of fuel liquid density and fuel level, data after processing utilize storage chip to store, and send to the gauger by output module, single-chip microcomputer adopts ATmega8, crystal oscillator adopts the external crystal-controlled oscillation of 4MHz, storage chip adopts the FM24V10 ferroelectric memory.
Data acquisition unit comprises two independently pressure transducer A and pressure transducer B, has certain difference in height between pressure transducer A and pressure transducer B, and two have the pressure transducer A of difference in height and the inside that sensor B is contained in respectively fuel oil box.Pressure transducer A and pressure transducer B are Voltage-output type pressure transducer, and output voltage is 0-5V, and range is 0-10KPa, and the pressure signal that sensor will collect converts voltage signal to and sends to A/D converter.
Output module is comprised of the RS485 communication interface, the control end pin of control chip U2 in the RS485 communication interface is kept to often low, control chip can receive external command at any time, and when receiving end received the order that needs the transmission data, the Single-chip Controlling A/D converter was changed, sent data through transmitting terminal, the single-chip microcomputer its data is processed, the data storage, control chip control end pin sets high simultaneously, sends data, after data sent and finish, control end set low, wait command.A/D converter adopts ADS1110 serial a/d converter, and supply voltage is 2.7V-5.5V, and precision is 20.48V ± 0.005%.The data line SDA1 of A/D converter and clock line SCL1 are connected to the I/O interface of single-chip microcomputer, by software control clock and data transmission.
Two of native system pressure transducers independently, be used for the force value of pick-up transducers position, the data that sensor collects send to A/D converter, data transmission after the A/D conversion is to single-chip microcomputer, through the calculating of row fuel liquid density and fuel level, the data after processing are stored and are sent to the gauger by 485 modes of transmitting in single-chip microcomputer inside.
As shown in Figure 2, in this device, two have the pressure transducer A of difference in height, the inside that sensor B is contained in respectively fuel oil box,
Suppose that the pressure that pressure transducer A records is PA; The pressure that pressure transducer B records is PB;
The vertical height of sensors A and sensor B is Δ h; Sensor B is △ h ' apart from the vertical height on container ground, and ɡ is acceleration of gravity;
Fuel density is: ρ=(PA-PB)/(g Δ h).
Simultaneously according to pressure P=ρ ɡ h, calculate the sensor distance liquid level under density now:
hA=PA/(ρɡ)；hB=PB/(ρɡ)。
Liquid level apart from the height (liquid level) of container bottom is: h=(hA+ △ h+ △ h ')=(hB+ △ h ').
Above demonstration and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. device of measuring locomotive fuel density and liquid level, it is characterized in that: comprise the data acquisition unit be arranged in fuel tank, described data acquisition unit is used for gathering the force value of position, the data that described data acquisition unit will collect send to A/D converter, data transmission after the A/D converter conversion is to single-chip microcomputer, in single-chip microcomputer inside, carry out the calculating of fluid density and liquid level, the data after processing are utilized storage chip to store and are sent to the gauger by output module.
2. a kind of device of measuring locomotive fuel density and liquid level according to claim 1, it is characterized in that: described data acquisition unit comprises two independently pressure transducer A and pressure transducer B.
3. a kind of device of measuring locomotive fuel density and liquid level according to claim 2, is characterized in that: have certain difference in height between described pressure transducer A and pressure transducer B.
4. a kind of device of measuring locomotive fuel density and liquid level according to claim 3, it is characterized in that: described two have the pressure transducer A of difference in height and the inside that sensor B is contained in respectively fuel oil box.
5. a kind of device of measuring locomotive fuel density and liquid level according to claim 1, it is characterized in that: described output module is comprised of the RS485 communication interface, the control end pin of control chip U2 in the RS485 communication interface is kept to often low, control chip receives external command at any time, when receiving end receives the order that needs the transmission data, the conversion of Single-chip Controlling A/D converter, send data, the single-chip microcomputer its data is processed, the data storage, control chip control end pin sets high simultaneously, send data, after data sent and finish, control end set low, wait command.
6. a kind of device of measuring locomotive fuel density and liquid level according to claim 2, it is characterized in that: described pressure transducer A and pressure transducer B are Voltage-output type pressure transducer, and output voltage is 0-5V, and range is 0-10KPa.
7. a kind of device of measuring locomotive fuel density and liquid level according to claim 1 is characterized in that: described A/D converter adopts ADS1110 serial a/d converter, and supply voltage is 2.7V-5.5V, and precision is 20.48V ± 0.005%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202538537U CN203310718U (en) | 2013-05-10 | 2013-05-10 | Device for measuring density and liquid level height of engine fuel oil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013202538537U CN203310718U (en) | 2013-05-10 | 2013-05-10 | Device for measuring density and liquid level height of engine fuel oil |
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| CN203310718U true CN203310718U (en) | 2013-11-27 |
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| CN2013202538537U Expired - Fee Related CN203310718U (en) | 2013-05-10 | 2013-05-10 | Device for measuring density and liquid level height of engine fuel oil |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103895985A (en) * | 2014-03-25 | 2014-07-02 | 济钢集团有限公司 | Micropressure comparing and measuring type tank liquid level detecting device and method |
| CN103983323A (en) * | 2014-06-06 | 2014-08-13 | 国家电网公司 | Hydropower station water level measurement method and system |
| CN107313878A (en) * | 2017-07-21 | 2017-11-03 | 西京学院 | A kind of double elements liquid propellant liquid level measure and control device |
| CN107505021A (en) * | 2017-07-18 | 2017-12-22 | 华浩核电（深圳）传感芯片有限公司 | Intelligent fuel tank tester |
| CN108469287A (en) * | 2018-03-14 | 2018-08-31 | 国网天津市电力公司电力科学研究院 | Double pressure-sensitive correction type oil level gauge for transformer |
| CN108593043A (en) * | 2018-06-28 | 2018-09-28 | 国网上海市电力公司 | The measuring apparatus of conservator liquid level for project of transmitting and converting electricity |
| CN110470341A (en) * | 2019-08-22 | 2019-11-19 | 安徽省法米特物联技术有限公司 | A kind of storage tank cloud monitoring system and method |
-
2013
- 2013-05-10 CN CN2013202538537U patent/CN203310718U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103895985A (en) * | 2014-03-25 | 2014-07-02 | 济钢集团有限公司 | Micropressure comparing and measuring type tank liquid level detecting device and method |
| CN103983323A (en) * | 2014-06-06 | 2014-08-13 | 国家电网公司 | Hydropower station water level measurement method and system |
| CN103983323B (en) * | 2014-06-06 | 2017-12-22 | 国家电网公司 | Hydropower station water level measuring method and hydropower station water level monitoring system |
| CN107505021A (en) * | 2017-07-18 | 2017-12-22 | 华浩核电（深圳）传感芯片有限公司 | Intelligent fuel tank tester |
| CN107313878A (en) * | 2017-07-21 | 2017-11-03 | 西京学院 | A kind of double elements liquid propellant liquid level measure and control device |
| CN108469287A (en) * | 2018-03-14 | 2018-08-31 | 国网天津市电力公司电力科学研究院 | Double pressure-sensitive correction type oil level gauge for transformer |
| CN108593043A (en) * | 2018-06-28 | 2018-09-28 | 国网上海市电力公司 | The measuring apparatus of conservator liquid level for project of transmitting and converting electricity |
| CN110470341A (en) * | 2019-08-22 | 2019-11-19 | 安徽省法米特物联技术有限公司 | A kind of storage tank cloud monitoring system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20160510 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |