CN201589626U - Electronic note keeping device based on singleship control - Google Patents

Abstract

The utility model relates to the technical field of data logging, in particular to an electronic notekeeping device based on singleship control. The electronic note keeping device comprises a power management unit, a singlechip control unit, a data storage unit, an LCD unit, a data serial transmission unit and a keyboard entry unit, wherein the singlechip control unit adopts an AT 89C52 chip and the data storage unit adopts a 24C256 chip of an E2PROM memorizer. The utility model has the advantages of simple hardware circuit, small volume, low energy consumption, convenient data logging and transferring, portability and low cost. When the electronic notekeeping device is adopted in mapping production, the field labor intensity is lessened, the accuracy of the acquired data is enhanced, and the production efficiency of mapping is improved.

Description

Based on monolithic processor controlled electronics note book device

Technical field

The utility model relates to surveying and mapping data recording technique field, relates in particular to a kind of based on monolithic processor controlled electronics note book device.

Background technology

At present, measurement of the level is an indispensable link in the mapping operation, present level record mainly contains two kinds of methods: first method is original hand-kept mode, there is the slit in the later stage robotization of this note book mode and data between handling, because the data that write on the handbook will be carried out post-processed, must be through this link of data typings, this has not only increased the cycle of measurement of the level, and to be easy to generate the people be the graunch that causes; Second method is to be program carrier with palm PC (PDA) or PC-1500, develop level note book program thereon, (price of PDA is in 2500-3000 unit except cost is higher for this mode, the price of PC-1500 is about 2500 yuan), under unexpected powering-off state, also tend to cause loss of data, aly have demonstration, input, memory function so develop, and cheap, practical low power dissipation electron note book instrument is imperative.

The utility model content

The purpose of this utility model provides a kind of based on monolithic processor controlled electronics note book device, and data recording is reliable, convenient, fast when realizing open-air mapping operation.

For achieving the above object, the utility model adopts following technical scheme:

Power Management Unit, Single-chip Controlling unit, data storage cell, liquid crystal display, data serial transmission unit and keyboard input block, wherein the Single-chip Controlling unit adopts the AT89C52 chip to constitute, and data storage cell adopts E ²Prom memory 24C256 chip constitutes.

Described Power Management Unit is made up of on-off circuit, mu balanced circuit, reset monitoring circuit, and described mu balanced circuit adopts the MAX639 chip to constitute, and described reset monitoring circuit adopts the IMP813 chip to constitute.

Described E ²Prom memory 24C256 chip is electrically connected with described single chip computer AT 89C52 chip by serial clock input end SCL and serial data read-write end SDA, finishes reading and writing data.

The 1st pin of described IMP813 chip, the 2nd pin, the 8th pin all meet power input VCC, the 3rd pin ground connection, the 4th pin connecting resistance R1 and R2 sample to battery supply, the 5th pin meets the 12nd pin INT0 of single-chip microcomputer 89C52, external interrupt input as single-chip microcomputer, the 6th pin WDI meets the 16th pin WR of single-chip microcomputer 89C52, and the 7th pin RST meets the 9th pin RESET of single-chip microcomputer 89C52.

The 1st pin of described 24C256 chip, the 2nd pin, the 3rd pin, the equal ground connection of the 4th pin, the 8th pin meets power supply VCC, the 5th pin SDA meets the 1st pin P1.0 of single-chip microcomputer 89C52, the 6th pin SCL meets the 2nd pin P1.1 of single-chip microcomputer 89C52, the 7th pin WP meets the 3rd pin P1.2 of single-chip microcomputer 89C52, and wherein the SDA pin meets power supply VCC by pull-up resistor R3.

The utlity model has following advantage and good effect:

1) hardware circuit is simple, volume is small and exquisite, energy consumption is low, data recording and unloading convenient, be easy to carry and cheap;

2) can in surveying production, reduce open-air labour intensity, increase the accuracy of image data, improve surveying production efficient.

Description of drawings

Fig. 1 is an on-off circuit schematic diagram of the present utility model.

Fig. 2 is a mu balanced circuit schematic diagram of the present utility model.

Fig. 3 is reset monitoring circuit theory diagrams of the present utility model.

Fig. 4 is data storage cell circuit theory diagrams of the present utility model.

Fig. 5 is a system software process flow diagram of the present utility model.

Embodiment

The utility model is described in further detail in conjunction with the accompanying drawings with specific embodiment below:

What the utility model provided remembers the book device based on monolithic processor controlled electronics, comprise Power Management Unit, Single-chip Controlling unit, data storage cell, liquid crystal display, data serial transmission unit and keyboard input block, wherein the Single-chip Controlling unit adopts the AT89C52 chip to constitute, and data storage cell adopts E ²Prom memory 24C256 chip constitutes.

Should mainly contain 128*64 liquid crystal display, soft-touch control input, 32KB memory capacity based on monolithic processor controlled electronics note book device function, the serial ports of data outputs to computer, makes up in the surveying production process, by the direct conversion of general data to electronic data.

Power Management Unit is made up of on-off circuit, mu balanced circuit, reset monitoring circuit, and monitor in real time to the voltage of battery this unit, for system provides a stable 5V power supply.On-off circuit as shown in Figure 1, it comprises :+E cell voltage input end, the output voltage terminal of+V on-off circuit provides power supply for MAX639, VCC is that the voltage of MAX639 is output as total system and provides and be stabilized in 4.75 to 5.25V operating voltage, / SWI is the soft-touch control end, / SWO links to each other with single-chip microcomputer 89C52 the 13rd pin, and PK links to each other with single-chip microcomputer 89C52 the 17th pin, by single-chip microcomputer the state of PK pin control and right/SWO is sampled and finishes soft on-off action to on-off circuit; Q1 is a positive-negative-positive switch triode 8550, and Q2 and Q3 are the switch triode 9013 of two NPN types.But its course of work brief analysis is:

When+E equal+the 9V entire circuit is in off position, push button/SWI makes Q1 be in the saturation conduction state, + V equals+E, be voltage stabilizing chip MAX639 power supply, VCC normally is output as+5V, and to put PK by single-chip microcomputer 89C52 be low level, Q3 is ended, the Q2 conducting, then Q1 maintains conducting state, and/SWO is the interruption input signal of high level as single-chip microcomputer 89C52.

When entire circuit is in operate as normal, if wish to turn-off entire circuit, then can push button/SWI, put/SWO is a low level, putting PK by single-chip microcomputer 89C52 is high level, and Q3 conducting this moment, Q2 ends; When unclamping button/SWI, the whole system operation power supply is cut off.

Mu balanced circuit as shown in Figure 2, adopt high precision voltage stabilizing chip MAX639, but its course of work brief analysis is: the 6th pin and the 8th pin meet input voltage+V, the 3rd, 4 and 7 pin ground connection, the 1st pin is output termination VCC; The 5th pin is a voltage output feedback end; Input voltage+V is through the MAX639 step-down, diode D6 (model is IN5819) voltage stabilizing, and inductance L 1 is after capacitor C 7, C8, C9 and the C10 filtering, by the 1st pin output voltage V CC.

The reset monitoring circuit as shown in Figure 3, but its course of work brief analysis is: reset monitoring mainly is to realize by chip I MP813, the 4th pin/PFI is used for supply voltage is sampled, and when power input voltage was lower than 6.0V, the 7th pin RST output significant level resetted single-chip microcomputer 89C52; Also can directly make system reset by the 6th pin WDI end input significant level.

The 1st pin of electrically connecting as of reset monitoring circuit: chip I MP813, the 2nd pin, the 8th pin connect and all meet power input VCC, the 3rd pin ground connection, the 4th pin connecting resistance R1 and R2 sample to battery supply, the 5th pin meets the 12nd pin INT0 of single-chip microcomputer 89C52, as the external interrupt input of single-chip microcomputer, the 6th pin WDI meets the 16th pin WR of single-chip microcomputer 89C52; The 7th pin RST meets the 9th pin RESET of single-chip microcomputer 89C52.Dividing potential drop by R1 and R2 makes the PFI end input voltage sampling of IMP813 bring up to 6V by the 1.25V normal working voltage, improves the thresholding of operating voltage, guarantees that the input voltage of MAX639 is not less than 6V, otherwise makes system reset by the 7th pin output significant level.

The data storage cell circuit as shown in Figure 4; but its course of work brief analysis is: adopt the Serial E 2PROM storer 24C256 with data cut-off protection function to carry out data storage; it mainly is connected with single-chip microcomputer 89C52 with serial data read-write end SDA by a serial clock input end SCL; finish reading and writing data; it adopts by the page is that 64 bytes write pattern; to improve the read or write speed of chip; the memory space of 32KB can satisfy surveys and draws the operation needs in the open air; data storage cell only adopts a slice 24C256; so the sheet of 24C256 choosing end A0; A1, A2 connects all.

The 1st pin of chip 24C256, the 2nd pin, the 3rd pin, the equal ground connection of the 4th pin, the 8th pin meets power supply VCC, the 5th pin SDA meets the 1st pin P1.0 of single-chip microcomputer 89C52, the 6th pin SCL meets the 2nd pin P1.1 of single-chip microcomputer 89C52, the 7th pin WP meets the 3rd pin P1.2 of single-chip microcomputer 89C52, wherein the SDA pin meets power supply VCC by pull-up resistor R3, to prevent the SDA long generation dividing potential drop that goes between, storage chip can't be write.

The Single-chip Controlling unit adopts a low-power consumption, 8 single chip computer AT 89C52 of the high-performance core devices as system, finishes data storage unit, liquid crystal display, data serial transmission unit and operation of keyboard input block and management.

The software flow of system relates to the functions such as storage, transmission, operation interface demonstration of data as shown in Figure 5, and program is carried out and is divided into new files, and record transmits and four parts that clear data.

New files just to the measurement situation on the same day as numbering to the data station number, data level, weather condition, the imaging situation, the keeper, the observer, preceding chi basis and back chi difference are carried out record, and create new file.Record is the most complicated in the whole procedure, and it mainly finishes the record to the level data, and whether data met the requirements judges that the measurement of level is divided into third-class, and each waits corresponding different parameter request.

Claims (5)

1. one kind based on monolithic processor controlled electronics note book device, it is characterized in that, comprising:

Power Management Unit, Single-chip Controlling unit, data storage cell, liquid crystal display, data serial transmission unit and keyboard input block, wherein the Single-chip Controlling unit adopts the AT89C52 chip to constitute, and data storage cell adopts E ²Prom memory 24C256 chip constitutes.

2. according to claim 1 based on monolithic processor controlled electronics note book device, it is characterized in that:

Described Power Management Unit is made up of on-off circuit, mu balanced circuit, reset monitoring circuit, and described mu balanced circuit adopts the MAX639 chip to constitute, and described reset monitoring circuit adopts the IMP813 chip to constitute.

3. according to claim 1 and 2 based on monolithic processor controlled electronics note book device, it is characterized in that:

Described E ²Prom memory 24C256 chip is electrically connected with described single chip computer AT 89C52 chip by serial clock input end SCL and serial data read-write end SDA, finishes reading and writing data.

4. according to claim 2 based on monolithic processor controlled electronics note book device, it is characterized in that:

The 1st pin of described IMP813 chip, the 2nd pin, the 8th pin all meet power input VCC, the 3rd pin ground connection, the 4th pin connecting resistance R1 and R2 sample to battery supply, the 5th pin meets the 12nd pin INT0 of single-chip microcomputer 89C52, external interrupt input as single-chip microcomputer, the 6th pin WDI meets the 16th pin WR of single-chip microcomputer 89C52, and the 7th pin RST meets the 9th pin RESET of single-chip microcomputer 89C52.

5. according to claim 3 based on monolithic processor controlled electronics note book device, it is characterized in that:

The 1st pin of described 24C256 chip, the 2nd pin, the 3rd pin, the equal ground connection of the 4th pin, the 8th pin meets power supply VCC, the 5th pin SDA meets the 1st pin P1.0 of single-chip microcomputer 89C52, the 6th pin SCL meets the 2nd pin P1.1 of single-chip microcomputer 89C52, the 7th pin WP meets the 3rd pin P1.2 of single-chip microcomputer 89C52, and wherein the SDA pin meets power supply VCC by pull-up resistor R3.

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