CN204641086U - A kind of printer control device based on grating encoder and FPGA - Google Patents
A kind of printer control device based on grating encoder and FPGA Download PDFInfo
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- CN204641086U CN204641086U CN201520294271.2U CN201520294271U CN204641086U CN 204641086 U CN204641086 U CN 204641086U CN 201520294271 U CN201520294271 U CN 201520294271U CN 204641086 U CN204641086 U CN 204641086U
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Abstract
The utility model relates to a kind of printer control device based on grating encoder and FPGA, comprise a printer control unit, word mechanism of car, paper advance mechanism and printhead, described word mechanism of car is along printer engine transverse shifting, described printhead is fixedly connected with word mechanism of car, and described printhead, word mechanism of car and paper advance mechanism are electrically connected with described printer control unit through one drive circuit; Also comprise a grating encoder, the grating scale of described grating encoder is arranged along movement length direction, and described word mechanism of car is fixed on through an installing rack on the read head of described grating encoder; Described grating scale is parallel with described movement, and the output of described grating encoder is electrically connected with described printer control unit through a FPGA module.The beneficial effects of the utility model are: not only can improve printing precision, can carry out printing simultaneously and report an error, and adjustment in time prints the mistake that step-out causes.
Description
Technical field
The utility model relates to printer field, particularly relates to a kind of printer control device based on grating encoder and FPGA.
Background technology
Printer is a kind of typical electromechanical integrated product, and printer completes the printing of word and figure by the common cooperation of mechanical part, electronic unit and corresponding software.Interface is parts important in printer equally, comprises the interface of printer and computer, also comprises interface between mechanical part and automatically controlled part and mechanically operated interface.Modern printer adopts the printing type of dot matrix, both also can print picture by printable character.Impact printer is mainly made up of printhead, word mechanism of car, ribbon unit, paper feed mechanism and control circuit, the control that printhead, paper feed and word garage are walked is comprised, the relation between the printing character library stored in the ROM memory in control circuit is used for controlling being moved by printable character and print needle in control circuit.The effect of word car drives printhead, being moved left and right and drive printhead laterally to move left and right, when clashing into colour band by printhead after arrival assigned address, character being printed off in the relevant position of printing paper by it.
Impact printer relies on not disturbing by foreign object of the high accuracy of word mechanism of car transmission, lasting uniformity, motion process, and once make a fault, will cause the situation that system is out of control.Such as, there is barrier in motion path, it stops or affects the motion of mobile vehicle, and the error etc. of word mechanism of car transmission, causes mobile vehicle cannot arrive by logic control signal the print position preset, or the logic location of current print position is inconsistent with physical location, result is that printing is incorrect, such as, print coincidence, print dislocation etc., for valuable bills, this can cause the generation of invalidated ticket, brings great loss.
Summary of the invention
The purpose of this utility model is for above weak point, provides a kind of printer control device based on grating encoder and FPGA, improves the precision of printer location.
The scheme that the utility model technical solution problem adopts is: a kind of printer control device based on grating encoder and FPGA, comprise a printer control unit, word mechanism of car, paper advance mechanism and printhead, described word mechanism of car is along printer engine transverse shifting, described printhead is fixedly connected with word mechanism of car, and described printhead, word mechanism of car and paper advance mechanism are electrically connected with described printer control unit through one drive circuit; Also comprise a grating encoder, the grating scale of described grating encoder is arranged along movement length direction, and described word mechanism of car is fixed on through an installing rack on the read head of described grating encoder; Described grating scale is parallel with described movement, and the output of described grating encoder is electrically connected with described printer control unit through a FPGA module.
Further, grating scale one end one locating hole of described grating encoder is fixed on the right plate of printer, and the other end is fixed on the left plate of printer through an elastic locking mechanism.
Further, described locating hole is fixed on the right side of the Article 1 grating of described grating scale.
Further, described grating encoder is electrically connected with described FPGA module after a Schmidt trigger shaping.
Further, also comprise one for driving the power module of print job, described power module is electrically connected with described printer control unit and grating encoder.
Compared with prior art, the utility model has following beneficial effect: the displacement of measuring word mechanism of car transverse shifting according to described grating encoding, by the position of grating encoder output word mechanism of car, judge that whether word truck position is accurate according to FPGA module, the positional information of word car is sent it back printer control unit simultaneously, control printhead through printer control unit and enter the arena.The printer control device that the utility model provides, realizes the position of location word mechanism of car.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model patent is further illustrated.
Fig. 1 is the grating encoder mounting structure schematic diagram of the utility model embodiment;
Fig. 2 is the electrical block diagram of the printer control method of the utility model embodiment.
In figure: the grating scale of 1-grating encoder; The read head of 2-grating encoder; 3-word mechanism of car; 4-Article 1 grating; 5-locating hole; 6-elastic locking mechanism; 7-printer right plate; 8-printer left plate.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
As shown in Fig. 1 ~ 2, a kind of printer control device based on grating encoder and FPGA, comprise a printer control unit, word mechanism of car 3, paper advance mechanism and printhead, described word mechanism of car 3 is along printer engine transverse shifting, described printhead is fixedly connected with word mechanism of car 3, and described printhead, word mechanism of car 3 and paper advance mechanism are electrically connected with described printer control unit through one drive circuit; Also comprise a grating encoder, the grating scale 1 of described grating encoder is arranged along movement length direction, and described word mechanism of car 3 is fixed on the read head 2 of described grating encoder through an installing rack; The grating scale 2 of described grating encoder is parallel with described movement, and the output of described grating encoder is connected to a FPGA module, and described FPGA module is electrically connected with described printer control unit.
From the foregoing, the beneficial effects of the utility model are: the displacement of measuring word mechanism of car transverse shifting according to described grating encoding, by the position of grating encoder output word mechanism of car 3, judge that whether accurately or word car whether step-out word truck position according to FPGA module, if there is step-out, report an error, carry out the reset of word car, word car comes back to print position after resetting and has continued print out task simultaneously.The printer control device that the utility model provides, not only can improve printing precision, can carry out printing simultaneously and report an error, and adjustment in time prints the mistake that step-out causes.
The printer control device based on grating encoder and FPGA that the utility model provides, described printer control unit is by the motion of drive circuit control word car, the motion of word car produces grating signal and inputs to FPGA module, printer control unit is exported to again after FPGA module process, printer control unit is positioned by the signal exported FPGA module, drives printhead to go out pin.
In the present embodiment, grating scale 2 one end one locating hole 5 of described grating encoder is fixed on the right plate 7 of printer, and the other end is fixed on the left plate 8 of printer through an elastic locking mechanism 6.Described elastic locking mechanism is that elastic washer fitted bolt is locked.
In the present embodiment, described locating hole 5 is fixed on the right side of the Article 1 grating 4 of the grating scale 1 of described grating encoder, and grating scale one end of grating encoder is set to circular hole, is positioned by locating hole and circular hole, ensure the original position printed, and using Article 1 grating 4 as printing initial position.In addition, the grating of the grating scale of grating encoder is made up of the antistatic film material film, and gratings strips part and the adjacent non-grating part of location grating are wide.
In the present embodiment, described grating encoder is electrically connected with described FPGA module after a Schmidt trigger shaping.
In the present embodiment, also comprise a power module, described power module is electrically connected with described printer control unit and grating encoder.
In sum, the printer control device that the utility model provides, realizes the accurate location of word mechanism of car.
The above-listed preferred embodiment that the utility model provides; the purpose of this utility model, technical scheme and advantage are further described; be understood that; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. the printer control device based on grating encoder and FPGA, comprise a printer control unit, word mechanism of car, paper advance mechanism and printhead, described word mechanism of car is along printer engine transverse shifting, described printhead is fixedly connected with word mechanism of car, and described printhead, word mechanism of car and paper advance mechanism are electrically connected with described printer control unit through one drive circuit; It is characterized in that: also comprise a grating encoder, the grating scale of described grating encoder is arranged along movement length direction, and described word mechanism of car is fixed on through an installing rack on the read head of described grating encoder; Described grating scale is parallel with described movement, and the output of described grating encoder is electrically connected with described printer control unit through a FPGA module.
2. a kind of printer control device based on grating encoder and FPGA according to claim 1, it is characterized in that: grating scale one end one locating hole of described grating encoder is fixed on the right plate of printer, and the other end is fixed on the left plate of printer through an elastic locking mechanism.
3. a kind of printer control device based on grating encoder and FPGA according to claim 2, is characterized in that: described locating hole is fixed on the right side of the Article 1 grating of described grating scale.
4. a kind of printer control device based on grating encoder and FPGA according to claim 1, is characterized in that: described grating encoder is electrically connected with described FPGA module after a Schmidt trigger shaping.
5. a kind of printer control device based on grating encoder and FPGA according to claim 1, it is characterized in that: also comprise one for driving the power module of print job, described power module is electrically connected with described printer control unit and grating encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520294271.2U CN204641086U (en) | 2015-05-09 | 2015-05-09 | A kind of printer control device based on grating encoder and FPGA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520294271.2U CN204641086U (en) | 2015-05-09 | 2015-05-09 | A kind of printer control device based on grating encoder and FPGA |
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| CN204641086U true CN204641086U (en) | 2015-09-16 |
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| CN201520294271.2U Active CN204641086U (en) | 2015-05-09 | 2015-05-09 | A kind of printer control device based on grating encoder and FPGA |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104802526A (en) * | 2015-05-09 | 2015-07-29 | 福建实达电脑设备有限公司 | Printer control device and printer control method based on grating encoder and FPGA (field programmable gate array) |
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2015
- 2015-05-09 CN CN201520294271.2U patent/CN204641086U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104802526A (en) * | 2015-05-09 | 2015-07-29 | 福建实达电脑设备有限公司 | Printer control device and printer control method based on grating encoder and FPGA (field programmable gate array) |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |