CN2691171Y

CN2691171Y - Linear scanner capable of radio releiving and transmitting

Info

Publication number: CN2691171Y
Application number: CN 03224951
Authority: CN
Inventors: 张伟; 顾成武; 吕迎丰; 张斧; 丁晓云
Original assignee: SHENZHEN XIGAN SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: Wuhan Syscan Digital Co., Ltd.
Priority date: 2003-04-03
Filing date: 2003-04-03
Publication date: 2005-04-06
Anticipated expiration: 2013-04-03

Abstract

The utility model relates to a linear scanner capable of wireless receiving and transmitting which can convey the graphs-texts or the bar codes after discriminating. The linear scanner capable of wireless receiving and transmitting comprises a wireless communication device, a wire scanner and a connecting component. The connecting component comprises a scanning starting device and a power switching circuit. The scanning starting device is connected with the general input/output port GPIO1 of a main processor which is included in the wireless communication device. The enable terminal EN of the serial peripheral interface SPI of the main processor is connected with the input signal terminal VIN of the wire scanner by the power switching circuit. The synchronous clock signal CLK of the serial peripheral interface SPI is directly connected with the clock port CLK of the wire scanner. The starting pulse for wire-image scanning SP produced by the general input/output interface GPIO2 of the main processor is directly connected with the signal input terminal of the starting pulse for wire-image sampling of the wire scanner. The digitalizing wire-scanning output signal VOUT which is outputted by the wire scanner is directly connected with the serial peripheral interface SPI.

Description

Linear scan device that can wireless receiving and dispatching

Technical field

The utility model relates to scanning technique, relates in particular to a kind of linear scan device that can wireless receiving and dispatching, the linear scan device that can read, store, discern or decode picture and text or bar code information specifically and send by wireless communication networks.

Background technology

Now wireless communication technique is used very universal, and the information exchange between the user is extremely frequent, and capacity is increasing, and existing manual input information exchanges and speech exchange can not be satisfied in time, the requirement of high power capacity, high precision.Present widely used scanner is general to be used with computer, and the information that scanning obtains will be passed through computer and just can be uploaded or pass on, and has brought great inconvenience to the user.

The utility model content

The purpose of this utility model is to disclose a kind of linear scan device that can wireless receiving and dispatching, and this device reads picture and text or bar code information by linear scan, and can in time send by wireless communication networks.

A kind of linear scan device that can wireless receiving and dispatching of the utility model comprises: wireless communication apparatus, the Line scanner that can line by line scan to picture and text or bar code and be connected link between described wireless communication apparatus and the Line scanner; Described link comprises the scanning starting device of opening scan function and reduces the power switch circuit that rating of set consumes; Described scanning starting device connects the universal input and output port GPIO1 of primary processor included in the described wireless communication apparatus; The Enable Pin EN of the serial peripheral equipment interface SPI of described primary processor connects the line sweep input signal end VIN of described Line scanner by power switch circuit; The synchronizing clock signals CLK of described serial peripheral equipment interface SPI directly connects the clock port CLK of described Line scanner; The line image sweep-initiating pulse SP that the described main general input/output interface GPIO2 that handles produces directly connects the line image sampling starting impulse signal input part of described Line scanner; The digitized line sweep output signal VOUT of Line scanner output directly connects described serial peripheral equipment interface SPI.

The utility model also comprises following technical characterictic, described Line scanner comprises the aanalogvoltage binarization circuit that the analog photoelectricity sensor output signal is converted to the line sweep output signal VOUT of binaryzation, and described aanalogvoltage binarization circuit comprises peak holding circuit, component voltage network and high-speed comparator; Imageing sensor output signal V imports peak holding circuit and high-speed comparator simultaneously, and the output of peak holding circuit is through component voltage network input high-speed comparator, and high-speed comparator output digital line scans output signal VOUT.Line scanner also can convert the analog photoelectricity sensor output signal to the A/D converter of the line sweep output signal VOUT of numeral.

The utility model also comprises following technical characterictic, and described link comprises that also frequency dividing circuit, counter, logic control circuit and output allow controller; The output signal of described scanning starting device is input power switch circuit and output permission controller respectively, and output allows controller output line scan input signal VIN to Line scanner; The master clock frequency MCLK input frequency dividing circuit of primary processor, frequency dividing circuit output two signal MC1 and MC2 also are connected respectively to counter and logic control circuit, the output of counter connects logic control circuit, the output of logic control circuit connects output and allows controller, and output allows the output of controller to import the INT port of primary processor and the line image sweep-initiating pulse SP port of Line scanner simultaneously.Scanning starting device is the manual button of input scan enabling signal, or contact can produce the contact induction transducer of scan start signal during scanned object.

The utility model also comprises following technical characterictic, and described Line scanner comprises circuit board, imageing sensor, light source, lens and glass; Described light source evenly illuminates the row that is scanned of scanned object, sees through glass from the reverberation of scanned object and enters lens, be imaged on the imageing sensor, the output signal of imageing sensor be read out on the circuit board and amplification and analog-to-digital conversion after export VOUT.

The utility model also comprises following technical characterictic, and described wireless communication apparatus, link and Line scanner are integrated in the shell; Perhaps be divided into the wireless communication apparatus that can independently use, the link and the Line scanner of encapsulation one, above-mentioned between the two by rigid connector, perhaps flexibly connect the line combination.Line scanner and described wireless communication apparatus also can make up along minor face along the combination of long limit.

Linear scan device that can wireless receiving and dispatching of the present utility model, connect wireless communication apparatus and Line scanner by link, utilize Line scanner scanning to obtain picture and text or bar code information, after decoding or the identification, utilize wireless communication apparatus according to information wireless being received and dispatched as various existing communication agreements such as GSM, GPRS.Owing in jockey, use scanning starting device and power switch circuit, the utility model is under state under standby, dormancy and the non-scanning work, the power supply of described Line scanner can be turn-offed, realize its zero-power under non operating state, and wireless communication apparatus operate as normal can be continued.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the functional block diagram of the linear scan device that the utility model can wireless receiving and dispatching;

Fig. 2 is the refinement functional block diagram of the linear scan device that the utility model can wireless receiving and dispatching;

Fig. 3 be in the utility model link block theory diagram;

Fig. 4 is the theory diagram of master clock frequency division part in the utility model;

The theory diagram of output circuit part when Fig. 5 is the utility model employing digital signal way of output;

Fig. 6 is control of the utility model neutral line scanning means scanner and output signal sequential chart;

Fig. 7 is the perspective view of the linear scan device preferred embodiment that the utility model can wireless receiving and dispatching;

Fig. 8 is the perspective view of linear scan device second embodiment that the utility model can wireless receiving and dispatching;

Fig. 9 is the perspective view of linear scan device the 3rd embodiment that the utility model can wireless receiving and dispatching.

Embodiment

Enforcement of the present utility model, based on existing wireless communication technique and scanning technique, by custom-designed link with both combinations, thereby realize correctly reading apace information, and the purpose that in time sends, and realize simply compact conformation.

See also Fig. 1 and Fig. 2, Fig. 1 is the functional block diagram of the linear scan device that the utility model can wireless receiving and dispatching, and Fig. 2 is the refinement functional block diagram of the linear scan device that the utility model can wireless receiving and dispatching.Linear scan device that can wireless receiving and dispatching of the present utility model mainly is made up of wireless communication apparatus device 30, Line scanner 50 and link 40.Wherein, described wireless communication apparatus device 30 has a main control module 32, radio receiving transmitting module 33, antenna 34, interface 35, keyboard 36 and display unit 37.Described wireless communication apparatus device 30 can be according to carry out the information wireless transmitting-receiving as various existing communication agreements such as GSM, GPRS.

Fig. 3 is the theory diagram of link block in the utility model; As shown in Figure 3, there are a primary processor 31 and buffering memory 38 in described main control module 32 inside, described primary processor 31 can be controlled this device and carry out information wireless transmitting-receiving, demonstration and graph text information and read, and by described buffer storage 38 storage graph text informations, transmitting-receiving of described information wireless and Presentation Function can utilize and existingly realize as wireless communication techniques such as mobile phones.Described primary processor 31 also has two general input/output interface GPIO1 and GPIO2 and serial peripheral equipment interface SPI.Described link 40 comprises circuit connection, scanning starting device 41 and power switch circuit 42.Described scanning starting device 41 can be a button, also can be a scanned medium contact induction transducer.For example pin by strong the startup and scan, unclamp button end scanning; When perhaps using contact pickup, start when detecting the contact scanning medium, detect when leaving medium and finish.In mancarried device, need reduce the power consumption of power supply as far as possible, linear scan device that can wireless receiving and dispatching of the present utility model has three kinds of operating states: online, standby and dormancy, under state under standby, dormancy and the non-scanning work, described power switch circuit 42 will turn-off the power supply of described Line scanner 50, realize its zero-power under non operating state, and this moment, wireless communication apparatus 30 can continue operate as normal.

When scanning starting device 41 wakes Line scanner 50 up, promptly press described button, or after described sensor sensing touches scanned medium to described Line scanner 50, described scanning starting device 41 produces a signal, and pass to the general input/output interface GPIO1 place of described primary processor 31, described primary processor 31 with regard to calling graph as the scan process program, the enable line EN that puts serial peripheral equipment interface SPI is effective, to described Line scanner 50 conveyer line scan input signal VIN, thereby open the power supply of described Line scanner 50 and light its light source 53 (as shown in Figure 9).At this moment, the timer (not shown) of described primary processor 31 produces certain hour line image sweep-initiating pulse SP at interval, general input/output interface GPIO2 by described primary processor 31 is sent to the line image sampling starting impulse signal input part of described Line scanner 50, and described Line scanner 50 is started working.The synchronizing clock signals CLK of serial peripheral equipment interface SPI can directly be connected with the clock signal input terminal mouth of described line sweep device 50, as line image sample-synchronous clock.

Fig. 4 is the theory diagram of master clock frequency division part in the utility model; When but described primary processor 31 does not have the vacant clock signal time spent, can adopt the master clock frequency division to add that the mode of Digital Logic control obtains line image sampling enabling signal SP, link 40 also comprises some necessary circuit and device except that having described scanning starting device 41 and power switch circuit 42 at this moment.As shown in Figure 4, when described scanning starting device 41 is worked, described power switch circuit 42 is open-minded, and startup output allows controller 46, described Line scanner 50 is in running order, the master clock frequency MCLK of primary processor 31 is by frequency dividing circuit 43 picked up signal MC1 and MC2, MC1 enters logic control circuit 45 through behind the counter 44, signal MC2 directly enters logic control circuit 45, handle through logic control circuit 45, obtain line image sweep-initiating pulse SP, described line image sweep-initiating pulse SP is except being connected to described Line scanner 50, also link to each other, thereby use interrupt routine to come line synchro image data samples process with the interruption input pin INT of described primary processor 31.

What Fig. 4 described is under the situation of processing module timer or GPIO mouth deficiency, utilizes the block diagram of master clock by outside generation SP signal, and this moment, the input of view data still needed to use the SPI interface.This block diagram has just been described the detection to SP of the generation of SP and processor, and the MC1 (being connected to the CLK end of line sweep device and SPI mouth) that produces of CLK signal.Frequency dividing circuit produces some synchronised clock MC1 and produces the SP pulse duration clock MC2 that the line image transducer needs, MC1 process counter (control row sampling width) produces the SP signal frequency, and the processing of process logic control circuit produces has n doubly to the original SP signal of a synchronizing clock signals frequency and MC2 pulse duration.Scanning starting device can when pushing button, be opened the line sweep power supply for the sweep start button, and output simultaneously is used to start the SP signal of line scanning work.

Line scanner 50 of the present utility model has adopted the digital signal way of output, and the theory diagram of output circuit part was the aanalogvoltage binarization circuit in Line scanner 50 inside among the figure when Fig. 5 was the utility model employing digital signal way of output.As shown in Figure 5, the signal V of imageing sensor output handles through peak holding circuit 510, enter into component voltage network 511, obtain imageing sensor black level V1 and another magnitude of voltage V2, the signal V that described V2 enters high-speed comparator 612 and imageing sensor output compares, thereby obtains line sweep output signal VOUT.Adopted the dynamic thresholding scheme in this design, it can change the threshold values of regulating binaryzation automatically according to the transmitting optics feature of scanned medium and the light and shade of scan image, obtains black and white image effect preferably.If in needs gray scale or chromoscan, the line sweep output signal is the analog level with image luminance information, can increase A/D analog to digital converter (not shown) in the circuit of interface with it.View data after the scanning can adopt the direct memory dma access mode described buffer storage 38 of writing direct, and also can write under the control of primary processor 31.

Among Fig. 5, the image peak holding circuit is used to keep producing the bright level (peak) of scanned medium reflection, and the black level of imageing sensor (minimum) can adopt pressurizer to produce, because for the line image transducer of same model, black level is a fixing given reference voltage level.On behalf of this medium, peak and minimum produce the maximum and the minimum value of image analoging signal GTG, threshold values when carrying out binary conversion treatment is exactly a value that occupy these 2 centres, this threshold values can be directly produces with the mode of electric resistance partial pressure, and promptly the component voltage network is linear ratio voltage divider.

Be the control line and the signal output timing diagram thereof of described Line scanner 50 as shown in Figure 6.This figure has indicated the sequential relationship between each signal of line image transducer.Wherein SP is that line scanning starts clock, CLK is that point sampling synchronised clock, VOUT are the view data output signal, the pulse distance of SP is the line-scanning period, Line scanner is received after the SP pulse, need n clk cycle to come the initialization sensing chip, when n+1 CLK clock, VOUT begins to export digital binary image, and CLK is the sample-synchronous clock of VOUT.After having transmitted the individual dot image data of m (Sao Miao length is different as required), VOUT finishes the data output of this journey, waits for next line scanning pulse.In the occasion of light source igniting not being controlled separately, the line-scanning period is exactly the capable exposure cycle of transducer.

Line scanner 50 of the present utility model generally comprises circuit board 51, imageing sensor 52, light source 53, lens 54 and glass 55, and its appearance profile can be a cuboid, and general pattern transducer 52 is arranged along long limit of this cuboid, as shown in Figure 7.Light source 53 evenly illuminates the row that is scanned of scanned object, reverberation from scanned object enters lens 54 through glass 55, be imaged on the imageing sensor 52, the output signal of imageing sensor 52 is read out on circuit board 51 and amplification and analog-to-digital conversion and export VOUT.Linear scan device that can wireless receiving and dispatching of the present utility model, described Line scanner 50 reads graph text information line by line, and carry out digitized processing, to obtain digitized line sweep output signal VOUT, described line sweep output signal VOUT is directly connected in the data-in port DATA of described primary processor 31 serial peripheral equipment interface SPI, as shown in Figure 3.

It shown in Fig. 7,8,9 perspective view of linear scan device that can wireless receiving and dispatching of the present utility model.As shown in the figure, described wireless communication apparatus 30 and Line scanner 50 can be integrated in one, and structure is small and exquisite, and be only bigger than regular handset; Also can distinguish independence, by specific jockey combination.Linear scan device that can wireless receiving and dispatching of the present utility model is no matter be integrated or separate, and described Line scanner 50 can be installed in the long limit of described wireless communication apparatus 30, also can be installed in minor face.When described wireless transmitter 30 and Line scanner 50 is independent respectively, described jockey can be a kind of rigid connector 56, also can be a kind of line 57 that flexibly connects, the interface of described jockey can adopt interfaces such as RS232, USB, also can adopt non-standard interface.

The utility model can wireless receiving and dispatching linear scan device institute scanned objects, can be bar code, also can be other graph-text content.After scanning was finished, view data can send to server host by network, in main frame, be correlated with decoding or identification, and then send.The utility model can wireless receiving and dispatching the linear scan device also bar code decoding program or optical mask identification software OCR can innerly be installed, the bar code information that reads or other graph-text content decoded respectively or discern, and this machine of being stored in or transmission.Data decode, identification and the transmission that can obtain scanning when lining by line scan this moment, the identification of also can decoding again after scanning is all finished sends after display unit 37 is confirmed by the user again.

Claims

1, a kind of linear scan device that can wireless receiving and dispatching, comprise: wireless communication apparatus (30), it is characterized in that, also comprise the Line scanner (50) that can line by line scan to picture and text or bar code and be connected described wireless communication apparatus (30) and Line scanner (50) between link (40); Described link (40) comprises having the scanning starting device (41) of opening scan function and reduce the power switch circuit (42) that rating of set consumes; Described scanning starting device (41) connects the universal input and output port GPIO1 of primary processor (31) included in the described wireless communication apparatus (30); The Enable Pin EN of the serial peripheral equipment interface SPI of described primary processor (31) connects the line sweep input signal end VIN of described Line scanner (50) by power switch circuit (42); The synchronizing clock signals CLK of described serial peripheral equipment interface SPI directly connects the clock port CLK of described Line scanner (50); The line image sweep-initiating pulse SP that the described main general input/output interface GPIO2 that handles (31) produces directly connects the line image sampling starting impulse signal input part of described Line scanner (50); The digitized line sweep output signal VOUT of Line scanner (50) output directly connects described serial peripheral equipment interface SPI.

2, linear scan device that can wireless receiving and dispatching as claimed in claim 1, it is characterized in that, described Line scanner (50) comprises the aanalogvoltage binarization circuit that the analog photoelectricity sensor output signal is converted to the line sweep output signal VOUT of binaryzation, and described aanalogvoltage binarization circuit comprises peak holding circuit (510), component voltage network (511) and high-speed comparator (512); Imageing sensor output signal V imports peak holding circuit (510) and high-speed comparator (512) simultaneously, the output of peak holding circuit (510) is through component voltage network (511) input high-speed comparator (512), and high-speed comparator (512) output digital line scans output signal VOUT.

3, linear scan device that can wireless receiving and dispatching as claimed in claim 1 is characterized in that, described Line scanner (50) comprises the A/D converter that the analog photoelectricity sensor output signal is converted to the line sweep output signal VOUT of numeral.

4, linear scan device that can wireless receiving and dispatching as claimed in claim 1 is characterized in that, described link (40) comprises that also frequency dividing circuit (43), counter (44), logic control circuit (45) and output allow controller (46); The output signal of described scanning starting device (41) is input power switch circuit (42) and output permission controller (46) respectively, and output allows controller (46) output line scan input signal VIN to Line scanner (50); The master clock frequency MCLK input frequency dividing circuit (43) of primary processor (31), frequency dividing circuit (43) output two signal MC1 and MC2 also are connected respectively to counter (44) and logic control circuit (45), the output of counter (44) connects logic control circuit (45), the output of logic control circuit (45) connects output and allows controller (46), and output allows the output of controller (46) to import the INT port of primary processor (31) and the line image sweep-initiating pulse SP port of Line scanner (50) simultaneously.

5, linear scan device that can wireless receiving and dispatching as claimed in claim 1, it is characterized in that, the described scanning starting device (41) of the closed condition of consumed power is the manual button of input scan enabling signal to make described Line scanner (50) be in not when not scanning, or contact can produce the contact induction transducer of scan start signal during scanned object.

6, linear scan device that can wireless receiving and dispatching as claimed in claim 1 is characterized in that described Line scanner (50) comprises circuit board (51), imageing sensor (52), light source (53), lens (54) and glass (55); Described light source (53) evenly illuminates the row that is scanned of scanned object, reverberation from scanned object enters lens (54) through glass (55), be imaged on the imageing sensor (52), the output signal of imageing sensor (52) be read out on the circuit board (51) and amplification and analog-to-digital conversion after output signal VOUT.

7, as claim 1 to 6 described any can wireless receiving and dispatching the linear scan device, it is characterized in that described wireless communication apparatus (30), link (40) and Line scanner (50) are integrated in the shell; Perhaps be divided into the wireless communication apparatus (30) that can independently use, the link (40) and the Line scanner (50) of encapsulation one, above-mentioned between the two by rigid connector (56), perhaps flexibly connect line (57) combination.

8, linear scan device that can wireless receiving and dispatching as claimed in claim 7 is characterized in that, described Line scanner (50) and described wireless communication apparatus (30) also can make up along minor face along the combination of long limit.