CN202093344U

CN202093344U - Electric cam controller

Info

Publication number: CN202093344U
Application number: CN2011201739559U
Authority: CN
Inventors: 郭俊
Original assignee: ZERON (NANJING) AUTOMATIC SYSTEM CO Ltd
Current assignee: ZERON (NANJING) AUTOMATIC SYSTEM CO Ltd
Priority date: 2011-05-27
Filing date: 2011-05-27
Publication date: 2011-12-28
Anticipated expiration: 2021-05-27

Abstract

The utility model discloses an electric cam controller. The electric cam controller comprises a single-chip microcomputer. The single-chip microcomputer is connected with an angle decoding unit, a nixie tube unit, a liquid crystal display unit, a ticker unit, a switch power supply unit and a key unit, respectively. The angle decoding unit is also connected with an angular transducer. The electric cam controller has functions of velocity amplitude\angle value display, production counting display, summit positioning, cam setting, production counting arrival and output, bottom dead point setting, angular transducer positive\reverse rotation setting, system parameter password protection, system alarming for abnormality and the like. The electric cam controller enables problems with a conventional electric cam to be solved, is low in cost, and exhibits a more direct display interface.

Description

Electronic cam controller

Technical field

The utility model relates to a kind of electronic cam controller, and it is widely used in the automated machine equipment, as the device use of control and follow-up work process.

Background technology

Cam is widely used in the equipment such as pressing machine, punch press as the device of control and follow-up work process, most of traditional automated machine equipment adopts mechanical cam as transmission and control element, mechanical cam is because of intrinsic physical construction and existing processes level, it is inconvenient to exist the phasing degree to adjust, easily produce vibration, shortcomings such as easy to wear, precision is low, and travelling speed is low.Utilize PLC or band rotary encoders such as general industrial computer or programmable logic device (PLD) to develop electric cam in recent years, sort controller generally all is to develop voluntarily and use, and has hardware and software development expense height, and the construction cycle is long, versatility is poor, and quality is difficult for shortcomings such as assurance.

Yangzhou Daqi Automation Technology Co., Ltd. has produced a kind of punch press electric cam, and its inner FPGA that adopts is as controller, and the band rotary transformer is decoded; and there is charactron to show and button etc.; have velocity amplitude/angle value and show, produce counting and show, the location, summit; cam is set; produce counting and arrive output, bottom dead centre is set, angular transducer just/counter-rotating sets; systematic parameter cryptoguard, functions such as system exception warning.Solved the problems that existing electric cam exists, but it is owing to use FPGA to cause the cost height as controller, and adopts charactron to show to cause man-machine interface unfriendly, shortcomings such as parameter is not directly perceived are set.

Summary of the invention

Goal of the invention: the purpose of this utility model provides that a kind of cost is lower, display interface electronic cam controller directly perceived more.

Technical scheme: a kind of electronic cam controller, it comprises single-chip microcomputer, single-chip microcomputer is connected with push-button unit with angle decoding unit, charactron unit, liquid crystal display, horse race lamp unit, Switching Power Supply respectively, and described angle decoding unit also is connected with angular transducer.

Wherein, described single-chip microcomputer input end and output terminal are respectively equipped with photo-coupler.

Wherein, the input end of described single-chip microcomputer is connected with the output terminal of detection of power loss unit, and the input end of detection of power loss unit is connected with the output terminal of Switching Power Supply.

Beneficial effect: the utlity model has velocity amplitude/angle value and show; produce counting and show, the location, summit, cam is set; produce counting and arrive output; bottom dead centre is set, angular transducer just/counter-rotating sets systematic parameter cryptoguard; functions such as system exception warning; it has not only solved the problems that existing electric cam exists, and cost is the end of than, and display interface is more directly perceived.

Description of drawings

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

Embodiment:

Below in conjunction with accompanying drawing the utility model is done further explanation.

As shown in Figure 1, a kind of electronic cam controller of the present utility model comprises angular transducer, angle decoding unit, charactron unit, push-button unit, horse race lamp unit, Switching Power Supply and detection of power loss unit.The output terminal of described angle decoding unit, push-button unit, Switching Power Supply and detection of power loss unit is connected with the input end of single-chip microcomputer respectively, the output terminal of single-chip microcomputer is connected with the input end of charactron unit, horse race lamp unit and liquid crystal display respectively, and the input end of detection of power loss power supply is connected with the output terminal of Switching Power Supply.

Single-chip microcomputer is the PIC18F8620 of Microchip company, it is a 8 reduced instruction single-chip microcomputers, fast operation not only, integrated functionality is powerful, and low price is respectively equipped with photo-coupler at single-chip microcomputer input end and output terminal, and the photo-coupler model of input end adopts PC817, the photo-coupler model of output terminal adopts COSMO4010, and single-chip microcomputer drives above-mentioned photo-coupler by connecting two shift registers (74LS595).Variation judges whether to have run a circle to the production counting procedure of single-chip microcomputer according to angle, if then count accordingly; The speed calculation subprogram of single-chip microcomputer goes out speed according to the used Time Calculation of the moving circle of revolution, and velocity amplitude is gone to tremble.

Angular transducer is that the rotary transformer that bi-motor is produced is won in Shanghai, has simple in structurely, is active in one's movements, and environment is not had specific (special) requirements, and easy to maintenance, amplitude output signal is big, and antijamming capability is strong, advantages such as reliable operation; The angle decoding unit is special chip AD2S90, and this chip top speed can reach 500 revolution per seconds, links to each other with single-chip microcomputer by the SPI serial line interface.The SPI mouth of single-chip microcomputer is from angle decoding chip (AD2S90) reading angular value, and the line data filtering of going forward side by side is to obtain accurate angle value.

What liquid crystal display adopted is the smart module of OCM12864 dot matrix type liquid of Zhaoqing, Guangdong Electronics Co., Ltd. of Jinpeng, directly links to each other with interface microcontroller, can dynamically show work picture and data.

The charactron unit adopts the common cathode charactron, and anode adds current-limiting resistance by one-chip machine port and connects, and negative electrode is driven by chip 74LS145 (4-10 code translator).Charactron is dynamically to show, shows to judge angle or speed, frequency 100Hz.

The horse race lamp unit drives for another sheet 74LS145 by 8 complexing pins of charactron through chip 74LS574 (8 latch driver).Calculate the lamp of this demonstration according to angle value, and dynamically show frequency 1000Hz.

The detection of power loss unit, is connected light lotus root PC817 by resistance and gives the single-chip microcomputer pin behind overcommutation by defeated people AC.Whether detection of power loss portion unit detects power down, if then the EEPROM the inside of the single-chip microcomputer of data preservations such as production counting.

Switching Power Supply input AC110～220V, output DC5V.

The utlity model has velocity amplitude/angle value and show, produce counting and show, the location, summit, cam is set, and produces counting and arrives output, bottom dead centre is set, angular transducer just/counter-rotating sets systematic parameter cryptoguard, functions such as system exception warning.Technical parameter is: working temperature: 0-40 degree centigrade, angle shows: the 0-359 degree, number of strokes may: 0-600 strokes/minute (360P/R), angular transducer: rotary transformer, set angle resolution: 1 degree, pilot lamp: 36 angle position pilot lamp, show: angle/speed (3) is produced counting (6) liquid crystal display, button: 4 microswitch keys, cam output: the 0-359 degree, cutting cam able to programme exports 4 the tunnel, cam input: 4 passages, voltage scope of application AC:20～250 (50/60Hz), the way of output: 16 passages, light-coupled isolation output.

The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. electronic cam controller, it is characterized in that: it comprises single-chip microcomputer, single-chip microcomputer is connected with push-button unit with angle decoding unit, charactron unit, liquid crystal display, horse race lamp unit, Switching Power Supply respectively, and described angle decoding unit also is connected with angular transducer.

2. a kind of electronic cam controller according to claim 1 is characterized in that: described single-chip microcomputer input end and output terminal are respectively equipped with photo-coupler.

3. a kind of electronic cam controller according to claim 1 and 2 is characterized in that: the input end of described single-chip microcomputer is connected with the output terminal of detection of power loss unit, and the input end of detection of power loss unit is connected with the output terminal of Switching Power Supply.