CN204854888U - A ultrasonic measurement appearance for boats and ships draft - Google Patents
A ultrasonic measurement appearance for boats and ships draft Download PDFInfo
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- CN204854888U CN204854888U CN201520538513.8U CN201520538513U CN204854888U CN 204854888 U CN204854888 U CN 204854888U CN 201520538513 U CN201520538513 U CN 201520538513U CN 204854888 U CN204854888 U CN 204854888U
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Abstract
The utility model discloses an ultrasonic measurement appearance for boats and ships draft. The utility model discloses an ultrasonic sensor and microcontroller, microcontroller are connected with power amplification drive circuit, drive circuit drive ultrasonic sensor launches the ultrasonic wave, and the ultrasonic wave meets signal that the water -reflected returns to be received by microcontroller through receiving circuit, preamp circuit, bandwidth -limited circuit and comparison shaping circuit in proper order, and microcontroller passes through GPRS communication circuit and upper computer connection. The utility model discloses a microcontroller controls direct digital frequency synthesizer and produces chirp signal, and the ultrasonic wave of this chirp signal modulation has characteristics such as the frequency can linearly be adjusted, resolution ratio high, the beam is narrow, frequency stability height, can solve too big precision decline and the single -frequency ultrasonic wave of resulting in of beam area and lead to the fact resolution ratio and range finding scope conflict scheduling problem.
Description
Technical field
The utility model relates to marine equipment technical field of measuring equipment, particularly a kind of ultrasonic meter for shipping draft.
Background technology
Dead weight cargo capacity metering method has two kinds: unloading metering on the bank and vessel displacement metering.Unloading metering on the bank adopts the various measurement instruments such as belt conveyer scale, capacity tank, flowmeter to carry out direct or indirect load-carrying metering, and usual precision is higher.But in some occasion, measuring apparatus of unloading cannot be installed on the bank, now vessel displacement metering is still a kind of effective mode.
Vessel displacement metering by measuring the shipping draft before and after unloading, and according to other data of " ship load and the water gauge table of comparisons " and boats and ships, calculates the weight of ship loading and unloading goods.Therefore the measurement accuracy of shipping draft is directly connected to the DWCC dead weight cargo capacity metering of boats and ships, is related to the interests of trading both sides.Current shipping draft is measured and can be divided into manual measurement and automatically measure.Manual measurement refers to by manually reading draft data according to drauht graticule, and the impact such as the fluctuation of the easy climate of this method, wave, hull degree of tilt, personnel's subjective factor, precision is not high, and trackability is poor.
Shipping draft is automatically measured and is mainly contained following several method: draft is different from causing the hydraulic pressure being arranged on hull bottom water tank different, utilizes pressure transducer measure hydraulic pressure and be converted into draft; Laser reflection range measurement principle is utilized to measure draft; Utilize camera to take load line image, and utilize figure automatic identification technology to read draft, above-mentioned method for automatic measurement can avoid the drawback manually reading draft, makes measurement result have higher objectivity.
But hull bottom water case is installed in said method there is the complicated loaded down with trivial details shortcoming of installation, laser and image measurement easily cause accuracy error under the bad weather circumstances such as greasy weather, it is high that ultrasonic wave measuring method has longitudinal frame, applied widely, high directivity, and possess not by light, smog, the factor impacts such as electromagnetic interference (EMI), and the advantage such as coverage rate is larger, ultrasonic sensor is normally arranged on ship side place above drauht mark at measurement shipping draft by ultrasonic applications, utilize ultrasound wave to launch range measurement principle and record the distance of ship deck to the water surface, and be converted into draft according to boats and ships height.But when using ultrasound wave measurement shipping draft, there are two subject matters, first because there is one fixed width ultrasound beamformer and water surface contact position, when water level fluctuation, the distance accuracy made vertically downward declines by water surface beam area excessive like this, causes error larger; Wide less during the single-frequency ultrasonic pulse secondly launched, then range resolution is higher, but detection range is comparatively near, so when before and after unloading ships, ship deck is larger to water surface distance variation range, resolving power declines.
Summary of the invention
For the deficiency of background technology, the purpose of this utility model is to provide a kind of ultrasonic meter for shipping draft.
The utility model comprises ultrasonic sensor and microcontroller, it is characterized in that: microcontroller is connected with power amplified drive circuit, power amplified drive circuit drives described ultrasonic sensor to launch ultrasound wave, ultrasound wave runs into signal that water-reflected returns successively through receiving circuit, preamplifying circuit, bandwidth-limited circuit with compare shaping circuit and received by microcontroller, and microcontroller is connected with host computer by GPRS communicating circuit.
Furtherly, be also provided with Direct Digital Synthesizer between described microcontroller and power amplified drive circuit, envelope signal produces circuit and linear regulating circuit, wherein Direct Digital Synthesizer is connected with microcontroller signal; Linear regulating circuit is connected with power amplified drive circuit signal.
Furtherly, described microcontroller is connected with button display circuit.
Furtherly, described microcontroller is connected with temperature sensor.
Furtherly, described microcontroller adopts model to be the chip of MSP430F5132.
Furtherly, described Direct Digital Synthesizer adopts model to be the chip of AD9910.
The ultrasound wave of the linear FM signal modulation in the utility model have frequency can linear regulation, resolution high, wave beam is narrow, frequency stability high, is beneficial to solve excessive precise decreasing and the single-frequency ultrasound wave of causing of beam area and cause resolution and finding range to conflict this two problems.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, the present embodiment comprises ultrasonic sensor 1 and microcontroller 2, microcontroller 2 is connected with power amplified drive circuit 6, described ultrasonic sensor 1 is driven to launch ultrasound wave, ultrasound wave runs into signal that water-reflected returns successively through receiving circuit 10, preamplifying circuit 11, bandwidth-limited circuit 12 with compare shaping circuit 13 and received by microcontroller 2, and microcontroller 2 is connected with host computer by GPRS communicating circuit 4.
Described microcontroller 2 is connected with Direct Digital Synthesizer 9, envelope signal produces circuit 8 and linear regulating circuit 7, and these three circuit are connected with described power amplified drive circuit 6.
Described microcontroller is connected with button display circuit 5.By key-press input boats and ships height, show shipping draft by display circuit.
Described microcontroller is connected with temperature sensor circuit 3, and in actual measurement process, temperature is comparatively large on ultrasonic propagation velocity impact, so carry out temperature compensation by temperature sensor circuit 3, makes measurement more accurate.
Described microcontroller 2 adopts model to be the chip of " MSP430F5132 ", and this chip is 16 single-chip microcomputers, adopts Flash technology, support online programming, under 25MHz crystal-driven, the instruction cycle is short, fast operation, inner integrated hardware multiplier, has ultralow power consumption.
Described Direct Digital Synthesizer employing model is the chip of " AD9910 ", this built-in chip type 14 figure place weighted-voltage D/A converter, support that fast phase and amplitude switch, support the sampling rate up to 1GSPS, there are 32 phase accumulators, carry linear or optional frequency, phase place or amplitude frequency sweep circuit, be applicable to being applied in generation linear FM signal.
This measuring instrument working method: produce linear FM signal by microprocessor controls Direct Digital Synthesizer, this linear FM signal is connected to power amplified drive circuit through envelope signal generation circuit and linear regulating circuit, ultrasound wave launched by ultrasonic sensor, received by microcontroller through oversampling circuit process after the water surface is launched, the distance of ship deck to the water surface is obtained according to the mistiming between hyperacoustic transmitting and receiving, according to the boats and ships height of button typing, both can obtain the draft of boats and ships after subtracting each other.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solutions of the utility model.
Claims (6)
1. the ultrasonic meter for shipping draft, comprise ultrasonic sensor and microcontroller, it is characterized in that: microcontroller is connected with power amplified drive circuit, power amplified drive circuit drives described ultrasonic sensor to launch ultrasound wave, ultrasound wave runs into signal that water-reflected returns successively through receiving circuit, preamplifying circuit, bandwidth-limited circuit with compare shaping circuit and received by microcontroller, and microcontroller is connected with host computer by GPRS communicating circuit.
2. a kind of ultrasonic meter for shipping draft according to claim 1, it is characterized in that: be also provided with Direct Digital Synthesizer between described microcontroller and power amplified drive circuit, envelope signal produces circuit and linear regulating circuit, wherein Direct Digital Synthesizer is connected with microcontroller signal; Linear regulating circuit is connected with power amplified drive circuit signal.
3. a kind of ultrasonic meter for shipping draft according to claim 1, is characterized in that: described microcontroller is connected with button display circuit.
4. a kind of ultrasonic meter for shipping draft according to claim 1, is characterized in that: described microcontroller is connected with temperature sensor.
5. a kind of ultrasonic meter for shipping draft according to claim 1, is characterized in that: described microcontroller adopts model to be the chip of MSP430F5132.
6. a kind of ultrasonic meter for shipping draft according to claim 2, is characterized in that: described Direct Digital Synthesizer adopts model to be the chip of AD9910.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520538513.8U CN204854888U (en) | 2015-07-23 | 2015-07-23 | A ultrasonic measurement appearance for boats and ships draft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520538513.8U CN204854888U (en) | 2015-07-23 | 2015-07-23 | A ultrasonic measurement appearance for boats and ships draft |
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| CN204854888U true CN204854888U (en) | 2015-12-09 |
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| CN201520538513.8U Active CN204854888U (en) | 2015-07-23 | 2015-07-23 | A ultrasonic measurement appearance for boats and ships draft |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109941404A (en) * | 2019-03-29 | 2019-06-28 | 山东科技大学 | The dynamic drinking water accurate measurement integrated system of ship and its method |
| CN112630781A (en) * | 2020-11-27 | 2021-04-09 | 深圳数联天下智能科技有限公司 | Ultrasonic distance measuring device and ultrasonic distance measuring method |
| WO2022074991A1 (en) * | 2020-10-07 | 2022-04-14 | 古野電気株式会社 | Draft information generating device and draft information generating method |
| DE102022125267A1 (en) | 2022-09-30 | 2023-11-02 | Baumer Electric Ag | Level detection unit |
-
2015
- 2015-07-23 CN CN201520538513.8U patent/CN204854888U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109941404A (en) * | 2019-03-29 | 2019-06-28 | 山东科技大学 | The dynamic drinking water accurate measurement integrated system of ship and its method |
| WO2022074991A1 (en) * | 2020-10-07 | 2022-04-14 | 古野電気株式会社 | Draft information generating device and draft information generating method |
| CN112630781A (en) * | 2020-11-27 | 2021-04-09 | 深圳数联天下智能科技有限公司 | Ultrasonic distance measuring device and ultrasonic distance measuring method |
| DE102022125267A1 (en) | 2022-09-30 | 2023-11-02 | Baumer Electric Ag | Level detection unit |
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