CN201463854U - Hand instrument for farmland-operation area measurement and billing - Google Patents

Abstract

The utility model relates to a hand instrument for farmland-operation area measurement and billing, which comprises a processing module, a GPS receiver module connected with the processing module and a display module, wherein the GPS receiver module receives longitude/latitude coordinate information sent by a GPS at a boundary point of a farmland and transmits the coordinate information to the processing module; the processing module is utilized to measure a farmland operation area according to the received coordinate information, and calculate relevant operation fee according to the area and a presupposed parameter; and the display module is utilized to display a calculation result. The utility model has the functions of area measurement, distance measurement, longitude/latitude display, unit price setting, measuring-unit setting, amount calculation, information display through an LCD, GPS-statement serial port output, baud-rate adjustment, area/amount information storage and inquiry, and the like.

Description

A kind of hand-held farmland working area is measured the charging instrument

Technical field

The utility model relates to agricultural mechanical field, is specifically related to a kind of reaping area measurement and message accounting.

Background technology

Farmland area is one of most basic data in the agricultural production management.Block area has directly determined the input amount of the means of production such as seed, chemical fertilizer, agricultural chemicals, also is that agricultural machinery carries out the main foundation that man-hour and charge are calculated in farm work.Use survey instruments such as tape measures more during traditional farmland area is measured, rely on manual measurement to calculate farmland area.Occurred being installed in the working area measurement mechanism on the Work machine in recent years, according to Work machine travel distance and working width computational tasks area, measuring speed is fast.Along with the development of domestic GPS technology, utilize GPS that real-time longitude, latitude information is provided, measure the coordinate of each point of farmland, calculate the length, area in farmland etc. by mathematical method, realize the area of arbitrary shape field piece is carried out quick location survey.

Be used for for the farmland area measuring method for above-mentioned three kinds, (1) tape measuring only is suitable for the rectangular-shaped field piece of small size, for large-area field piece, then wastes time and energy, and easily makes mistakes, and is difficult to measure the area of irregular field piece.(2) the working area measurement mechanism that is installed on the agricultural operation machinery is to measure working area afterwards, also causes error in dipping and economic dispute easily.(3) commercial Handheld GPS position finder has the area measurement function on the market, but complicated operation, and do not possess the operation billing function, and can not satisfy the needs of practical operation, be not suitable for the peasant and use.Particularly under the ubiquitous situation of current agricultural machinery cross-regional operation, it is necessary to design and develop a kind of simple and practical a kind of hand-held farmland working area measurement charging instrument.

The utility model content

The purpose of this utility model just is to solve that the conventional farmland area measurement is wasted time and energy, low precision and be difficult to measure the problem of irregular field piece area (comprising convex polygon, concave polygon etc.); Simultaneously,, and do not possess the problem of operation billing function, invent a kind of hand-held farmland working area and measure the charging instrument at area measurement function singleness, the complicated operation of commercialization Handheld GPS position finder on the market.

For achieving the above object, the technical solution of the utility model is to adopt a kind of hand-held farmland working area to measure the charging instrument, the GPS receiver module and the display module that comprise processing module and be attached thereto respectively,

Described GPS receiver module receives the location coordinate information on summit in the field boundary point that GPS sent, and sends described coordinate information to processing module;

Described processing module is used for calculating farmland working area according to the described coordinate information that receives, and calculates corresponding opex according to described area size and default billing parameter;

Described display module is used to show result of calculation.

Wherein, also comprise load module, link to each other, be used to be provided with billing parameter with described processing module.

Wherein, also comprise power module, link to each other with described processing module.

Wherein, described power module comprises lithium battery and battery voltage supervisory circuit, and described battery voltage detection circuit is used to monitor the cell voltage of described lithium battery, and shows by described display module.

Wherein, also comprise memory module, link to each other, be used for the storage computation result with described processing module.

Wherein, also comprise clock chip, link to each other, internal time benchmark and timing are provided when being used for the GPS no signal with described processing module.

Wherein, also comprise the RS232 output module, link to each other, be used for carrying out communication, the also exportable GPS standard of described RS232 output module statement with computing machine with described processing module.

The utlity model has area measurement, range observation, longitude and latitude demonstration, unit price setting, measurement unit setting, calculate the amount of money, the demonstration of LCD information, the output of GPS statement serial ports and functions such as baud rate is adjustable, area amount information storing queries, the utility model possesses RS232 and CAN bus interface, and extendability is strong.When a satellite number is less than 3 in measuring process or battery electric quantity hummer warning of sounding when not enough.Have clock chip, use gps time that clock chip is carried out automatic correcting time, when the GPS no signal, can make clock and use.Have lithium battery, can charge with 5V DC or 9～12V DC.The utility model can be used for the accurate measurement of open-air regular and irregular areas such as different shape farmland, greenery patches, forest, waters, beach, has stronger practicality.

Description of drawings

Fig. 1 is the structured flowchart of embodiment of the present utility model;

Fig. 2 is that synoptic diagram is calculated in the pentagon farmland of embodiment of the present utility model.

Embodiment

Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.

As shown in Figure 1, measure the charging instrument according to the farmland working area of the utility model embodiment and comprise processing module, display module, memory module, power module, GPS receiver module, load module, RS232 output module.

Processing module adopts single chip computer AT 90CAN128, has CAN, USART and the I of expansion ²C interface.PB7 connects hummer, when a satellite number is less than 3 in measuring process or battery electric quantity hummer warning of sounding when not enough.

Display module adopts LCD 12864, links to each other with single-chip microcomputer by PA, pc port.

The GPS receiver module is SKYLAB M10, links to each other with single-chip microcomputer by the USART0 interface.Single-chip microcomputer receives GPS information by RX0, sends the GPS receiver module by TX0 instruction is set.Single-chip microcomputer shows that wherein said GPS information comprises as longitude, latitude, a satellite number etc. to the GPS information that receives by LCD12864.

The RS232 output module adopts the SP3223 chip, links to each other with single-chip microcomputer by the USART1 interface, and single-chip microcomputer links to each other with the SP3223 chip by RX1, TX1 pin.Single-chip microcomputer is by RS232 interface and computing machine communication, also by this port output GPS NMEA format statement.

I ²The C bus is a kind of I of being used for ²The two-wire system bus that connects between the C device.It is by serial data line (SDA) and serial time clock line (SCL), and two lines are transmission information between the device that is connected on the bus, and according to each device of Address Recognition.In device, utilize single-chip microcomputer pin SCL, SDA to connect one or more pieces CAT24C256 storeies, be used to preserve measurement data.

Load module adopts keyboard, considers that the single-chip processor i/o port resource is limited, and keyboard adopts special-purpose I ²C bus keyboard chip ZLG7290, its maximum can be expanded 64 buttons.In this device, used 21, can expand if desired.Can be provided with and be stored among the MCU unit price, measurement unit by button, can and show by the button inquiry.

The clock module circuit adopts special-purpose I ²C bus clock chip PCF8563 uses gps time that this chip is carried out automatic correcting time, can make clock and use when the GPS no signal.

The driver module of CAN bus is SN65HVD230D, links to each other with microprocessor by TXCAN, RXCAN interface.

Power module has lithium battery, can charge with 5VDC or 9～12V DC. and battery voltage supervisory circuit is connected to microprocessor by ADC7 cell voltage is monitored, and is used for counting cell electric weight and battery electric quantity shown by LCD screen.

The utility model utilizes the positioning function of GPS, measures the coordinate of each point of farmland, thereby be the distance, area etc. of calculating the farmland by mathematical method, and realization is carried out gps position measurement fast to the area of arbitrary shape field piece.

The utlity model has manual and automatic metering system, below, with reference to Fig. 2, measuring pentagon ABCDE area in the manual measurement mode is that example describes.

After opening measurement charging instrument power supply, the LCD screen shows start-up picture, and LCD shows the satellite acquisition interface after about 3 seconds.Single-chip microcomputer receives GPS receiver module output information by the USART0 interface, jumps to automatically to show main interface after a GPS module locking satellite number is greater than 3.Enter the area measurement interface by the area measurement key.

Arriving summit A point back, tested pentagon plot measures by initiating key; After some A point is waited for about 3 seconds under the prompting of LCD screen a bit, this moment the point A that single-chip microcomputer will receive GPS latitude and longitude coordinates (X ₀, Y ₀) convert planimetric coordinates (x to ₀, y ₀), plane coordinate system xoy initial point O is moved to an A set up new plane coordinate system x ' o ' y ', then putting the coordinate of A in new plane coordinate system is (0,0).

Arrive B point back and press acknowledgement key, a B point wait for behind about 3s LCD shield point out under a bit, the GPS latitude and longitude coordinates (X of the single-chip microcomputer point B that will receive at this moment ₁, Y ₁) convert to coordinate among planimetric coordinates x ' o ' y ' (x ' ₁, y ' ₁).

Arrive C point back and press acknowledgement key, under the LCD screen is pointed out after C point is waited for about 3 seconds a bit, the GPS latitude and longitude coordinates (X of the single-chip microcomputer point C that will receive at this moment ₂, Y ₂) convert to coordinate among planimetric coordinates x ' o ' y ' (x ' ₂, y ' ₂).Then triangle Δ ABC vector area is

${\stackrel{\→}{S}}_{\mathrm{\ΔABC}}=\frac{1}{2}\left|\begin{array}{c}{x^{\′}}_1{y^{\′}}_1\\ {x^{\′}}_2{y^{\′}}_2\end{array}\right|=\frac{1}{2}({x^{\′}}_1{y^{\′}}_2-{x^{\′}}_2{y^{\′}}_1)$

Arrive D point back and press acknowledgement key, under the LCD screen is pointed out after D point is waited for about 3 seconds a bit, the GPS latitude and longitude coordinates (X of the single-chip microcomputer point D that will receive at this moment ₃, Y ₃) convert to coordinate among planimetric coordinates x ' o ' y ' (x ' ₃, y ' ₃).Then triangle Δ ACD vector area is

${\stackrel{\→}{S}}_{\mathrm{\ΔACD}}=\frac{1}{2}\left|\begin{array}{c}{x^{\′}}_2{y^{\′}}_2\\ {x^{\′}}_3{y^{\′}}_3\end{array}\right|=\frac{1}{2}({x^{\′}}_2{y^{\′}}_3-{x^{\′}}_3{y^{\′}}_2)$

Then the vector area of quadrilateral ABCD is

${\stackrel{\→}{S}}_{\mathrm{ABCD}}={\stackrel{\→}{S}}_{\mathrm{\ΔABC}}+{\stackrel{\→}{S}}_{\mathrm{\ΔACD}}$

Arrive E point back and press acknowledgement key, under the LCD screen is pointed out after E point is waited for about 3 seconds a bit, the GPS latitude and longitude coordinates (X of the single-chip microcomputer point E that will receive at this moment ₄, Y ₄) convert to coordinate among planimetric coordinates x ' o ' y ' (x ' ₄, y ' ₄).Then triangle Δ ADE vector area is

${\stackrel{\→}{S}}_{\mathrm{\ΔADE}}=\frac{1}{2}\left|\begin{array}{c}{x^{\′}}_3{y^{\′}}_3\\ {x^{\′}}_4{y^{\′}}_4\end{array}\right|=\frac{1}{2}({x^{\′}}_3{y^{\′}}_4-{x^{\′}}_4{y^{\′}}_3)$

Then the vector area of pentagon ABCD is

${\stackrel{\→}{S}}_{\mathrm{ABCDE}}={\stackrel{\→}{S}}_{\mathrm{ABCD}}+{\stackrel{\→}{S}}_{\mathrm{\ΔADE}}$

It is positive and negative to consider that the vector area has, and then the vector area is taken absolute value, and then pentagonal area is

$S_{\mathrm{ABCDE}}=\mathrm{abs}\left({\stackrel{\→}{S}}_{\mathrm{ABCDE}}\right)$

Enter to measure and finish the interface by finishing key after measurement is finished, show survey area, unit price and the amount of money.

Under the farmland operation situation, particularly under the ubiquitous situation of current agricultural machinery cross-regional operation, this device can be finished the measurement of farmland working area, and calculating the harvesting expense. this utility model interface is many, and simple to operate, and have the operation billing function, can satisfy the needs of practical operation.

The GPS technology that adopts the utility model realizes hand-held farmland working area measurement, the farmland area that detours and can measure in a week along tested ground block boundary, solving tape measuring large tracts of land field piece wastes time and energy, easily make mistakes, and be difficult to measure the area for cutting of irregular field piece, the working area measurement mechanism that solution is installed on the agricultural operation machinery is to measure the problem that working area causes economic dispute easily afterwards, solve existing comparatively single based on the hand-held working area measurement mechanism function of GPS, and complicated operation, and do not possess the problem of operation billing function.

The utlity model has unit price setting, measurement unit setting, the calculating amount of money, the demonstration of LCD information, the output of GPS statement serial ports and functions such as baud rate is adjustable, area amount information storing queries, solve the charge computational problem.

The utlity model has clock chip, use gps time that clock chip is carried out automatic correcting time, when the GPS no signal, can make clock and use.

The utlity model has lithium battery, can adopt 6～12V accumulator to charge, solve cross-regional operation charging problem.

The utility model possesses serial ports and CAN bus interface, and extendability is strong, can carry out communication with other equipment with CAN bus interface.

More than be preferred forms of the present utility model, according to the disclosed content of the utility model, those of ordinary skill in the art can expect some identical, replacement schemes apparently, and these schemes all should fall into the scope of the utility model protection.

Claims (7)

1. a hand-held farmland working area is measured the charging instrument, it is characterized in that the GPS receiver module and the display module that comprise processing module and be attached thereto respectively;

Described GPS receiver module receives the latitude and longitude coordinates information of the field boundary point that GPS sent, and sends described coordinate information to processing module;

Described processing module is used for calculating farmland working area according to the described coordinate information that receives, and calculates corresponding opex according to described area size and default billing parameter;

Described display module is used to show result of calculation.

2. hand-held farmland working area as claimed in claim 1 is measured the charging instrument, it is characterized in that, also comprises:

Load module links to each other with described processing module, is used to be provided with billing parameter.

3. hand-held farmland working area as claimed in claim 1 is measured the charging instrument, it is characterized in that, also comprises:

Power module links to each other with described processing module.

4. hand-held farmland working area as claimed in claim 3 is measured the charging instrument, it is characterized in that, described power module comprises lithium battery and battery voltage supervisory circuit, and described battery voltage detection circuit is used to monitor the cell voltage of described lithium battery, and shows by described display module.

5. hand-held farmland working area as claimed in claim 1 is measured the charging instrument, it is characterized in that, also comprises memory module, links to each other with described processing module, is used for the storage computation result.

6. hand-held farmland working area as claimed in claim 1 is measured the charging instrument, it is characterized in that, also comprises:

Clock chip links to each other with described processing module, and internal time benchmark and timing are provided when being used for the GPS no signal.

7. hand-held farmland working area as claimed in claim 1 is measured the charging instrument, it is characterized in that, also comprises:

The RS232 output module links to each other with described processing module, is used for carrying out communication with computing machine; The also exportable GPS standard of described RS232 output module statement.

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