CN201689440U

CN201689440U - Handheld bar-code meter reading machine

Info

Publication number: CN201689440U
Application number: CN2010201751895U
Authority: CN
Inventors: 李振国; 周宇; 周世云
Original assignee: Elefirst Science & Tech Co Ltd
Current assignee: Elefirst Science & Tech Co Ltd
Priority date: 2010-04-29
Filing date: 2010-04-29
Publication date: 2010-12-29
Anticipated expiration: 2020-04-29

Abstract

The utility model belongs to the technical field of automatic power meter reading, particularly relates to a handheld bar-code meter reading machine. The meter reading machine comprises a CPU; a keyboard, a display screen, a power supply and a clock are connected to the CPU; the CPU is connected with a USB, an RS232, infrared equipment, RS485, a 20 mA electric current loop and a micropower wireless and thermal printer communication channel through a channel switching interface and with an LCD, an NOR FLASH, an SRAM and a USB communication chip through a data bus; a bar-code scanning module is also connected to the CPU; the CPU is connected with the bar-code scanning module through hardware flow RTS/CTS; and a PC is communicated with the bar-code scanning module through a USB interface. When reading a meter on site, a meter reader does not need to input the user number manually; the bar-code meter reading machine can automatically scan and identify the 1D bar code on the ammeter of a user, can quickly locate the household number of a section of which the meter is to read, and can automatically analyze, process and store ammeter data in the meter reading machine. Since the meter reading line is not provided, the meter reader has more choices in reasonable work arrangement; and job evaluation of meter readers can be preformed so as to prevent meter readers from inadequate meter reading.

Description

The hand-held bar code meter reader

Technical field

The utility model belongs to electric power automatic data logging technical field, a kind of specifically hand-held bar code meter reader.

Background technology

Hand-held meter reader is to be used for the strong career field of various flowabilities, carries out the palm terminal that data acquisition and field data analysis are handled.Traditional hand-held meter reader only possesses data acquisition channel such as infrared, that micropower is wireless, and ammeter data is that meter reading efficiency is very low by the manual keyboard typing of meter reading personnel mostly; In addition, also exist the meter reading personnel not on-site check meter only to estimate copy, can not check meter and put in place, also have human error, " connection-related electricity use " and " electricity use based on human relationships ", it is low to copy the nuclear rate, the leak of existence is gone up in the management of checking meter.

Summary of the invention

Technical problem to be solved in the utility model is: at the shortcoming of above prior art existence, a kind of hand-held bar code meter reader is proposed, can locate the section of checking meter family number fast, gather automatically, handle, the storage ammeter data, stop the phenomenon that the meter reading personnel checks meter not in place and take place.

The technical scheme that the utility model solves above technical matters is:

The hand-held bar code meter reader, comprise CPU, on CPU, be connected to keyboard, display screen, power supply and clock, CPU by the passage translation interface be connected to USB, RS232, infrared, RS485,20mA electric current loop, micropower is wireless and the thermal printer communication channel, CPU is connected to LCD, NOR FLASH, SRAM and PC by data bus, also be connected to the bar code scan module on the CPU, communicate by hardware flow RTS/CTS between CPU and the bar code scan module, communicate by USB interface between PC and the bar code scan module.

Like this, by the bar code on scanning of bar code scan module and the identification electric supply meter, gather ammeter data by communication channel, and automatically analyzing and processing, storage ammeter data in meter reader, realize communicating by letter realization file high-speed transfer therebetween between PC and the bar code meter reader by usb bus.Since the utility model have the hand-held meter reader of bar-code identification function inner integrated barcode scan engine, when check meter in the person of checking meter scene, need not manual input user number, only need to press scanning key, the bar code meter reader is with autoscan and discern bar code on the electric supply meter, can locate the section of checking meter family number fast.Gather ammeter datas by communication channels such as infrared, micropower is wireless, RS485,20mA electric current loops, and automatically analyzing and processing, storage ammeter data in meter reader.

Owing to need not to stipulate to check meter circuit, make the meter reading personnel that more selection be arranged on rationally arranging work, simultaneously, can carry out the post examination to the person of checking meter, stop the phenomenon generation that the meter reading personnel checks meter not in place.

As the further technical scheme that limits of the utility model, on the UART2 passage that is connected to CPU that the bar code scan module is independent.The bar code scan module is selected the SE-955-I100R scanning engine of symbol company for use.CPU is 32 arm processors of technical grade, dominant frequency 100MHz.

LCD selects the graphic dot matrix LCD module of 160*160 with 16 grades of gray scales for use, adopts 8 bit data bus to carry out interface between CPU and the LCD module.

The bar code meter reader adopts the powered battery mode, power supply is chargeable NiCd or NiMh battery and common 5# dry cell, consider chargeable NiCd or NiMh battery and common 5# dry cell exchange, adopted the power management chip LT1308A of switching mode to constitute booster circuit, the battery input voltage is adjusted into stable 5V, uses for subsequent conditioning circuit.

Bar code meter reader software by meter-reading module, mend and to copy module, adorn that module, system are provided with module, Password Management module five big main functional modules are formed up and down, just only need will existing these modules make up and can realize that bar code checks meter at software, thus practical.

Description of drawings

Fig. 1 is a structured flowchart of the present utility model.

Fig. 2 is the electrical connection diagram of CPU and bar code scan module.

Fig. 3 is the data transmission scheme between bar code scan module and the PC.

Embodiment

Embodiment one

Present embodiment is a kind of hand-held bar code meter reader, its hardware connects as shown in Figure 1, adopt high-performance CPU to be the control core, on CPU, be connected to keyboard, display screen, power supply and clock, CPU by the passage translation interface be connected to USB, RS232, infrared, RS485,20mA electric current loop, micropower is wireless and the thermal printer communication channel, CPU is connected to LCD, NOR FLASH, SRAM and USB communication chip by data bus, also is connected to the bar code scan module on the CPU.CPU adopts 32 arm processors of high performance technical grade, dominant frequency 100MHz, program space 512KB, data space 32MB.The bar code scan module is selected the SE-955-I100R scanning engine of symbol company for use.LCD selects the graphic dot matrix LCD module of 160*160 with 16 grades of gray scales for use, adopts 8 bit data bus to carry out interface between CPU and the LCD module.On the hardware with the bar code scan module on the independent UART2 passage that is connected to CPU, hardware flow control (RTS/CTS) is used in being electrically connected as shown in Figure 2 of CPU and bar code scan module between CPU and the bar code scan module.

Data transmission between bar code scan module and the PC in order to realize the rapid file transmission between PC and the hand-held bar code meter reader, has designed a USB DEVICE interface as shown in Figure 3, is used for file and adorns Communications service up and down.Realize communicating by letter between PC and the bar code meter reader by usb bus, be mainly and upload in the PC realization file high-speed transfer therebetween passing under the file in the PC in the Flash storer of meter reader and with the file in the meter reader Flash storer.

The bar code meter reader adopts the powered battery mode, power supply is chargeable NiCd or NiMh battery and common 5# dry cell, consider chargeable NiCd or NiMh battery and common 5# dry cell exchange, adopted the power management chip LT1308A of switching mode to constitute booster circuit, the battery input voltage is adjusted into stable 5V, uses for subsequent conditioning circuit.LT1308A uses its unique control loop design, extends the life of a cell, and this makes device can all keep high-level efficiency in very wide output current scope.Characteristics such as the inductance peak point current control of device can protect power supply to avoid overload or short circuit condition influence, and the control starting current prevents the output recoil and cell voltage excessively reduces, and when load was light, LT1308A can automatically switch to energy-saving mode.

Bar code meter reader software by meter-reading module, mend and to copy module, adorn that module, system are provided with module, Password Management module five big main functional modules are formed up and down.Meter-reading module by the table number bar code scan, estimate copy, put exception code, change table, functions such as plus-minus electric weight, query function form.Benefit copies module and the meter-reading module function is roughly the same, and the location control automatically of just checking meter navigates to next piece automatically and do not copy ammeter.Adorning module up and down provides statistical piece information, has generated subfunction compositions such as going up dress data, communication by section.System is provided with that module has comprised that mutational range setting, selective system, battery information are checked, electricity charge compute switch, clock setting, plus-minus electric weight switch, estimate and copy seven submodules of electric weight switch.The Password Management module is responsible for program start Password Management and postrun Password Management work.Be existing mould port with upper module, only need existing these modules are just made up and can realize that bar code checks meter at software.

The utility model can also have other embodiment, and the technical scheme that equal replacement of all employings or equivalent transformation form all drops within the claimed scope of the utility model.

Claims

1. hand-held bar code meter reader, comprise CPU, on CPU, be connected to keyboard, display screen, power supply and clock, described CPU is connected to USB by the passage translation interface, RS232, infrared, RS485, the 20mA electric current loop, micropower is wireless and the thermal printer communication channel, described CPU is connected to LCD by data bus, NOR FLASH, SRAM and USB communication chip, it is characterized in that: also be connected to the bar code scan module on the described CPU, communicate by hardware flow RTS/CTS between described CPU and the bar code scan module, communicate by USB interface between described PC and the bar code scan module.

2. hand-held bar code meter reader as claimed in claim 1 is characterized in that: on the UART2 passage that is connected to CPU that described bar code scan module is independent.

3. hand-held bar code meter reader as claimed in claim 1 or 2 is characterized in that: described bar code scan module is selected the SE-955-I100R scanning engine of symbol company for use.

4. hand-held bar code meter reader as claimed in claim 1 is characterized in that: described CPU is 32 arm processors of technical grade, dominant frequency 100MHz.

5. hand-held bar code meter reader as claimed in claim 1 is characterized in that: described LCD is the graphic dot matrix LCD module of 160*160 with 16 grades of gray scales, adopts 8 bit data bus to carry out interface between described CPU and the LCD.

6. hand-held bar code meter reader as claimed in claim 1 is characterized in that: described power supply is chargeable NiCd or NiMh battery and common 5# dry cell, and the power management chip LT1308A by switching mode between described CPU and the power supply constitutes booster circuit.

7. hand-held bar code meter reader as claimed in claim 1 is characterized in that: described bar code scan module by meter-reading module, mend copy module, up and down adorn module, module is set in system and the Password Management module is formed.