CN203502085U - Ultrasonic oil amount detector - Google Patents
Ultrasonic oil amount detector Download PDFInfo
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- CN203502085U CN203502085U CN201320654211.8U CN201320654211U CN203502085U CN 203502085 U CN203502085 U CN 203502085U CN 201320654211 U CN201320654211 U CN 201320654211U CN 203502085 U CN203502085 U CN 203502085U
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- oil amount
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Abstract
An ultrasonic oil amount detector is characterized in that a data processor and an ultrasonic oil amount sensor probe, the data processor is in communication connection with the ultrasonic oil amount sensor probe, the data processor comprises an MCU control circuit and a power circuit connected with the MCU control circuit, and the data processor further comprises an ultrasonic collecting circuit and a temperature collecting circuit. The ultrasonic oil amount detector can be used for measuring the height of oil amount in an oil tank, and outputs standard electric signals after circuit processing. The ultrasonic sensor is externally attached to the bottom of the oil tank, so that oil amount real-time detection can be realized without oil contact. The ultrasonic oil amount detector can be widely used for monitoring oil amount of various vehicles, and can also be used for oil amount monitoring of various vehicles and real-time accurate monitoring of the oil level of fuel tanks of ships, generating units and internal combustion engines. The ultrasonic oil amount detector can be combined with the GPS/GPRS communication technology. Through a computer software management platform, scientific management is realized, and oil consumption refueling and improper oil consumption are judged. Oil theft behaviors are prevented, and vehicle operation cost is saved.
Description
Technical field
The utility model discloses a kind of ultrasound wave oil mass detector.
Background technology
Tradition oil mass detector is divided into condenser type, resistance-type, flowmeter type, tongue tubular type, float-type, wherein:
1, condenser type, is easily subject to greasy dirt to affect generation error; Can not produce electricity sparking; Punching is installed.
2, resistance-type, Mechanical measurement, error is large, exist hysteresis quality, sensor for a long time to contact with oil plant, is easily corroded, pollutes, and while affecting measuring accuracy, installation, fuel tank must be punched.
3, flowmeter type, need to block oil pipe, can not measure volume read-out, can only measure use amount, inconvenient measuring control.
4, tongue tubular type, surveys output accuracy low; Affected greatly by the temperature of measuring media and mains fluctuations; Components and parts easy magnetization; Measurement data is subject to pasta fluctuation and greasy dirt to affect greatly, can not make according to on-the-spot installation of the height of fuel tank.
5, float-type, only can be used for the fuzzy indication of oil mass, metering use, the sheet resistance that is not useable for oil mass is subject to the own reasons of product such as fuel oil pollution degree, supply voltage, physical construction, lubricity, larger on the long-time stability impact of output valve.
Utility model content
The purpose of this utility model is to provide a kind of ultrasound wave oil mass detector, it is characterized in that, it comprises data processor and ultrasound wave fuel-quantity transducer probe, described data processor and the communication connection of ultrasound wave fuel-quantity transducer probe; Described data processor comprises MCU control circuit and the power circuit being connected with MCU control circuit; Described data processor also comprises ultrasonic acquisition circuit and temperature collection circuit.
Further, described ultrasonic acquisition circuit is connected with MCU control circuit by an operational amplification circuit with temperature collection circuit.
Further, described data processor also comprises RS232 output circuit, RS485 output circuit, analogue quantity output circuit, and described RS232 output circuit, RS485 output circuit, analogue quantity output circuit are connected with MCU control circuit respectively.
The utility model using ultrasound wave measurement technology is measured the oil mass height in fuel tank, and after processing of circuit outputting standard electric signal; Ultrasonic sensor is affixed on fuel tank bottom outward, does not contact and can detect in real time oil mass with oil; The oil mass monitoring that can be widely used in various types of vehicles can also be to boats and ships, genset, the real-time precise monitoring of oil level of the fuel tank of apparatus of the internal-combustion engine, can be in conjunction with GPS/GPRS mechanics of communication, by computer software management platform, realization, to vehicle scientific management, is differentiated oil consumption and is refueled and improper oil consumption.Prevent from stealing oily behavior, save vehicles operation cost.
Accompanying drawing explanation
The above is the general introduction to technical solutions of the utility model, for further explaining, below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail the utility model.
Fig. 1 schematic block circuit diagram of the present utility model;
Fig. 2 groundwork process flow diagram of the present utility model;
The workflow diagram of Fig. 3 the utility model software.
Embodiment
Refer to shown in Fig. 1, a kind of ultrasound wave oil mass detector of the present utility model, it comprises data processor and ultrasound wave fuel-quantity transducer probe, data processor and the communication connection of ultrasound wave fuel-quantity transducer probe; Data processor comprises MCU control circuit and the power circuit being connected with MCU control circuit; Data processor also comprises ultrasonic acquisition circuit and temperature collection circuit.
As an aspect of the utility model embodiment, ultrasonic acquisition circuit is connected with MCU control circuit by an operational amplification circuit with temperature collection circuit.
Another aspect as the utility model embodiment, data processor also comprises RS232 output circuit, RS485 output circuit, analogue quantity output circuit, and RS232 output circuit, RS485 output circuit, analogue quantity output circuit are connected with MCU control circuit respectively.
Power circuit voltage stabilizing becomes 5V to power to become 3.3V to power to the work of RS232/RS485 interface circuit, voltage stabilizing directly gives ultrasonic acquisition circuit, operation amplifier circuit and temperature collection circuit is powered to the work of MCU control circuit, power supply 12V; Ultrasonic acquisition circuit and temperature collection circuit collection signal, amplify signal through operational amplification circuit, then this signal be converted into the square-wave signal of standard by comparer, and then MCU control circuit gathers the square-wave signal of conversion; MCU control circuit is converted into these signals height and the temperature value of oil level through mathematical model formula, and by the RS232/RS485 interface output data of standard, by level height, it is converted into corresponding Voltage-output analog quantity simultaneously.
During ultrasonic measuring liquid level, the acoustic signals of crossing through ovennodulation is launched from probe, after liquid level reflects, by probe, echoed signal detected; CPU calculates liquid level according to digital model relation, h=ct/2; H: liquid level; T: sound wave is from being transmitted into the time used of returning; C: ultrasonic velocity in liquid.
The factor that affects measuring accuracy in ultrasonic ranging system is a lot, comprises that site environment disturbs, time main pulse frequency etc.; But environment temperature has the greatest impact to the velocity of sound, temperature compensation is in system, to contain system compensation circuit to comprise temperature sensing circuit and house dog.Temperature sensing circuit is used for measuring in real time the temperature of fuel tank, the impact of the variation of compensation velocity of propagation on propagation distance; House dog is used for improving stability and the antijamming capability of Single Chip Microcomputer (SCM) system, prevents program " race flies " or enters endless loop.
Product work flow process is as Fig. 2, product power-up initializing, ultrasound wave fuel-quantity transducer probe gathers oil mass altitude signal, temperature signal and passes to MUC analyzing and processing after by operation amplifier and control, output RS232/RS485 interface data output (two kinds of interface shape alternatives), voltage analog output.
Software workflow is as Fig. 3, flowchart text:
Flag_500ms represents 500ms zone bit
Flag_2S represents 2s zone bit
Flag_5S represents 5s zone bit
Flag_60S represents 60s zone bit.
First after product powers on, inner MCU program initialization and startup timer, judge whether 500ms zone bit arrives, and as do not arrived, continues judgement.After arrival, 500ms zone bit is carried out to zero clearing, then gather level height data and temperature data.Gathered and rear level height data have been judged to the surveyed 3cm that whether is greater than, as continued to return judgement 500ms zone bit while being less than 3cm, and repeated the step that gathers above, until the oil level of surveying is greater than 3cm, just stored current oil level as reference value.After confirming reference value, system can judge that three times oil-level measurement can be kept working accurately and renewal automatically, is respectively 2s, 5s, the time of 60s; The time of 2s is for exporting current oil level data and temperature; The time of 5s is used for judging and upgrading the situation of normal use oil mass; 60s is for judgement and renewal is refueled or the situation of non-normal use oil mass.
Specific works flow process is as follows:
The system judgement time, while reaching 2s, system can be exported once this level height value of constantly surveying and the magnitude of voltage of respective heights oil level representative, by the zero clearing of 2s zone bit, enters into the judgement of next round simultaneously at every turn.
The system judgement time reaches the 5s time at every turn, and system can read level height and temperature value automatically, simultaneously the zero clearing of 5s zone bit.Then judge current surveyed level height whether reference value ± 6mm within the scope of, if do not existed, return and continue to differentiate this zone bit and whether arrive.If within the scope of this, system update currency is new benchmark.
The system judgement time reaches the 60s time at every turn, and system can read level height and temperature value automatically, simultaneously the zero clearing of 60s zone bit.Whether whether the maximal value and the minimum value that then judge repeatedly measured value differ by more than 2mm, if be greater than, returned to this zone bit of continuation differentiation and arrive.If differed, be less than 2mm, take and repeatedly measure the reference value that the central value of gained is renewal oil level.
The variation of oil mass is to work as the oil mass of before measurement and the benchmark numerical value of preservation compares by judgement, thereby judge current state oil mass, is to increase or reduce, and can differentiate oil consumption refuel and improper oil consumption by the data that spread out of.Prevent from stealing oily behavior, save vehicles operation cost.
Such advantage is:
1, measure accurately, the resolution of measurement is 0.2mm, measures level accuracy 3mm, and ultrasonic sensor has carried out temperature correction between-40 ℃ to 80 ℃, guarantees that equipment is in high temperature and high and cold external environment condition operation, and gathers accurate data.
2, good stability, adopts up-to-date ultrasound wave noncontact measurement, float-type, pressure type, the magnetic slidingtype measuring method processed of the direct contact type adopting with respect to tradition.This product contacts with oil because avoiding, thereby has guaranteed product the stability of product, long-life.
3, install simple and safe, only need be by below, installation of sensors fuel tank outside, without changing original fuel tank measurement structure, without fuel tank is carried out to perforate and transformation; Can realize oil mass and detect, save product application cost is installed.
4, application is simple, this product is considered with all kinds of communication product data in market and is docked in exploitation, adopts after this product, generally can directly apply to the GPS/GPRS transport module in market, thereby reduce client's secondary development, easily realize the collection of oil mass and management.
5, anti-static ability (EMC) is strong, can eliminate the electrostatic interference that most of automobile component produces, even the electromagnetic interference (EMI) of thunder and lightning.
6, the multiple standards electric signal way of output, the mode of the exportable electric signal of product has analog quantity voltage, RS485 and tri-kinds of modes of RS232.
7, have temperature compensation, constantly automatic calibration, guarantees the highest measuring accuracy forever.
The above; it is only preferred embodiment of the present utility model; not the utility model is done to any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection domain of the present utility model.
Claims (3)
1. a ultrasound wave oil mass detector, is characterized in that, it comprises data processor and ultrasound wave fuel-quantity transducer probe, described data processor and the communication connection of ultrasound wave fuel-quantity transducer probe; Described data processor comprises MCU control circuit and the power circuit being connected with MCU control circuit; Described data processor also comprises ultrasonic acquisition circuit and temperature collection circuit.
2. ultrasound wave oil mass detector as claimed in claim 1, is characterized in that, described ultrasonic acquisition circuit is connected with MCU control circuit by an operational amplification circuit with temperature collection circuit.
3. ultrasound wave oil mass detector as claimed in claim 1, it is characterized in that, described data processor also comprises RS232 output circuit, RS485 output circuit, analogue quantity output circuit, and described RS232 output circuit, RS485 output circuit, analogue quantity output circuit are connected with MCU control circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320654211.8U CN203502085U (en) | 2013-10-22 | 2013-10-22 | Ultrasonic oil amount detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320654211.8U CN203502085U (en) | 2013-10-22 | 2013-10-22 | Ultrasonic oil amount detector |
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| Publication Number | Publication Date |
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| CN203502085U true CN203502085U (en) | 2014-03-26 |
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| CN201320654211.8U Expired - Fee Related CN203502085U (en) | 2013-10-22 | 2013-10-22 | Ultrasonic oil amount detector |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457912A (en) * | 2014-12-04 | 2015-03-25 | 林聪� | GPS ultrasonic fuel quantity detector for vehicle and data processing method of detector |
| CN105043506A (en) * | 2015-06-02 | 2015-11-11 | 林聪� | Ultrasonic oil conservator oil level detector for power transformer |
| CN106932055A (en) * | 2017-04-24 | 2017-07-07 | 深圳市电应普科技有限公司 | A kind of High Precision Automatic sampling calibration ultrasonic solution level monitoring system |
| CN107642809A (en) * | 2017-10-20 | 2018-01-30 | 九阳股份有限公司 | A kind of oil cup of kitchen ventilator oil mass detection device |
| CN108020296A (en) * | 2017-11-24 | 2018-05-11 | 吉旗（成都）科技有限公司 | A kind of oil sense event recognition algorithm based on ultrasonic technology |
| CN108645486A (en) * | 2018-08-03 | 2018-10-12 | 无锡麦道电子科技有限公司 | A kind of Maple Syrup collection monitoring system |
-
2013
- 2013-10-22 CN CN201320654211.8U patent/CN203502085U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457912A (en) * | 2014-12-04 | 2015-03-25 | 林聪� | GPS ultrasonic fuel quantity detector for vehicle and data processing method of detector |
| CN105043506A (en) * | 2015-06-02 | 2015-11-11 | 林聪� | Ultrasonic oil conservator oil level detector for power transformer |
| CN106932055A (en) * | 2017-04-24 | 2017-07-07 | 深圳市电应普科技有限公司 | A kind of High Precision Automatic sampling calibration ultrasonic solution level monitoring system |
| CN107642809A (en) * | 2017-10-20 | 2018-01-30 | 九阳股份有限公司 | A kind of oil cup of kitchen ventilator oil mass detection device |
| CN107642809B (en) * | 2017-10-20 | 2020-03-24 | 九阳股份有限公司 | Oil cup oil mass detection device of range hood |
| CN108020296A (en) * | 2017-11-24 | 2018-05-11 | 吉旗（成都）科技有限公司 | A kind of oil sense event recognition algorithm based on ultrasonic technology |
| CN108020296B (en) * | 2017-11-24 | 2019-12-03 | 吉旗（成都）科技有限公司 | A kind of oil sense event recognition algorithm based on ultrasonic technology |
| CN108645486A (en) * | 2018-08-03 | 2018-10-12 | 无锡麦道电子科技有限公司 | A kind of Maple Syrup collection monitoring system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20201022 |
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| CF01 | Termination of patent right due to non-payment of annual fee |