CN201489296U

CN201489296U - Digital timing controller

Info

Publication number: CN201489296U
Application number: CN2009200660773U
Authority: CN
Inventors: 彭希南; 谢稳; 彭程; 卢文波; 荀庆来
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-09-28
Filing date: 2009-09-28
Publication date: 2010-05-26
Anticipated expiration: 2019-09-28

Abstract

The utility model relates to a digital timing controller, comprising a convex controller outer housing, a round digital scale dial plate embedded in the central position of the convex part of the outer housing, clock hands which are driven by a micro stepper motor and positioned at the center of the dial plate, a control circuit formed by a special timing chip, and the like; the digital timing controller is characterized in that the timing controller is inserted bracket type mounting manner in structure; the positions of the clock hands on the timing scale dial plate can be finished by touching UP and DOWN buttons; when the timing is started, a RUN light emitting diode twinkles and the clock hands move anticlockwise in a gradual reduction manner; when the timing is finished, the RUN light emitting diode stops twinkling; the clock hands point to the zero position of the dial plate. Compared with the existing timer, the digital timing controller uses digital pointer type indication manner without energy storage system formed by great wheel and clockwork spring of mechanical timer or delay regulation circuit formed by potentiometer and capacitor, thereby having the advantages of high precision, easy operation, intuitionistic display, long service life, and the like.

Description

Digital timing controller

Affiliated technical field

The utility model belongs to important control parts in the electromechanical integration automaton, it can be switched on or switched off a certain device according to a preset time, is widely used in the automatic control system of departments such as metallurgy, machinery, electric power, chemical petroleum.

Background technology

Timer is important control parts in the electromechanical integration automaton, and various timers also are seen everywhere in daily life, from washing machine timer, electric fan timer to electric cooker timer etc.Traditional timer comprises machinery and two kinds of electronic timers, the power part that the unidirectional mechanism that mechanical timer comprises clockwork spring, wind up forms, the releasing parts of forming by multiple sets of teeth wheel gear and make certain gear in the gear train forward cam and the electric contact timing trigger mechanism that sends an electric signal or mechanical signal behind the certain angle to.Mechanical timer provides the power of total system by manually twisting tight clockwork spring, the revolution number when thereby the increase clockwork spring is lax, end in gear train has escape wheel, escapement pawl and hairspring, guarantee the constant airspeed that gear train is rotated under the driving of clockwork spring, the device of adjusting hairspring length is arranged on the hairspring, to adjust the frequency of escapement pawl swing, guarantee that gear is by the rotating speed rotation of setting, but obvious defects comparatively such as owing to be subjected to the influence of temperature, humidity, material and assembly technology, it has, and timing accuracy is poor, the life-span is short.Electronic timer is then mainly by delay circuit, topworks such as trigger and relay forms, adopt the LCD/LED Displaying timer time more, perhaps select timing by the indicating positions of lever arm on an index dial of rotational potentiometer, the RC delay circuit of being made up of potentiometer and electric capacity after the energized charges immediately after a period of time time-delay, the voltage of capacitor is higher than the threshold voltage of trigger, trigger is triggered, the pushing executing mechanism actuating of relay, thereby be switched on or switched off external circuit, reach the purpose that controlled circuit regularly moves, but also exist timing error big, shortcomings such as the timing dynamic process is not directly perceived.

Summary of the invention

For addressing the above problem, the utility model provides a kind of digitimer with new structure, adopt CD4060 chip or 555 time base circuits to compare with the conditional electronic timing controller, the circuit aspect has adopted special-purpose timing chip PLX-3000, regularly indicating section adopts pointer digital instrumentation scheme, pointer is driven by the micro-step motor driving shaft, whole timing process intuitive display, fixed cycle operator is finished by two contact button UP and DOWN, be provided with easy, but adopted the design proposal of insertion groove posture assembling on the timing controller shell mechanism, be convenient to and air switch, devices such as leakage switch carry out modular combination to be installed, and also makes things convenient for it to unload simultaneously.

For achieving the above object, the utility model has been taked following technical scheme:

1, digital timing controller comprises the regularly pointer (7) of scale dial plate (2), the driving of single shaft micro-step motor of controller housing (1), numeral, and its numeral timing scale dial plate (2) is embedded in the middle position of controller housing (1) mutually.

2, the shell of digital timing controller (1) is a convex form, be embedded with regularly scale dial plate (2) of numeral on the middle position of case protrusion part mutually, regularly the scale on the scale dial plate (2) is 0～60 even reticule, and the center of dial plate is equipped with a pointer (7) that is driven by the micro-step motor driving shaft.

3, timing scale dial plate (2) the lower-left side of digital timing controller has a contact button that is masked as UP (6), there is a contact button that is masked as DONE (3) lower right side, and numeral regularly dial plate (2) upper left side has a light emitting diode that is masked as RUN (8).

4, comprise two front and back wiring steps on the controller housing of convex form (1), comprise two spiral fastening input wires terminals that link to each other with through wires hole on the front step, the 220V civil power front step upper connecting terminal (4) (5) of slave controller housing respectively inserts, comprise three spiral fastening connection terminals that link to each other with through wires hole on the backward step, connection terminal (9) (10) (11) termination on the output control signal slave controller housing backward step of output relay goes out.

5, the bottom of controller housing (1) has one can insert the fixedly installation groove (12) of truss.

Description of drawings

Fig. 1 is digital timing controller outside drawing;

Fig. 2 is digital timing controller front elevation;

Fig. 3 is digital timing controller side view;

Fig. 4 is digital timing controller front view;

Fig. 5 is digital timing controller rear view;

Fig. 6 is digital timing controller electrical schematic diagram.

Embodiment

Below in conjunction with accompanying drawing composition structure of the present utility model is described respectively.Sequence number is respectively among the figure: the shell of controller (1), digital calibration dial plate (2), DOWN touch to be adjusted button (3), 220V civil power N input end (4), 220V civil power L input end (5), UP and touches the installation groove of adjusting on button (6), pointer (7), RUN operating condition indication light emitting diode (8), output electromagnetic relay moving contact J1 (9), output electromagnetic relay normally opened contact J1-1 (10), output electromagnetic relay normally opened contact J1-2 (11), the controller housing (12).

In the utility model, the housing of controller (1) is a convex in shape, one 0～60 evenly divided dial plate (2) embeds the middle position of case protrusion part, therefore regularly show outstanding directly perceived, in Fig. 2, the lower-left side of scale dial plate have one be masked as UP touch the adjustment button, what there was a sign DONE lower right side of scale dial plate touches the adjustment button, the graduation apparatus upside of facing left has one to be masked as RUN operating condition light emitting diode.Comprise five spiral fastening-type connection terminals that link to each other with through wires hole on the front and back step of the shell of digital timing controller (1) altogether, wherein front step partly is the 220V mains electricity input end, the front end step of N (4) and L (5) connection terminal slave controller shell inserts, and the rear end of output control signal (9) (10) (11) the slave controller shell of output relay picks out.There is one to be fit to insert the groove (12) that truss is installed on the shell of timing controller (1).

Fig. 6 is an electrical schematic diagram of the present utility model, kernel control chip is regularly special chip PLX-3000, system clock reaches as high as 24MHz, single step run beat 0.5 μ s, the single shaft micro-step motor M1 that drives pointer is the instrument motor special, by three triode controls, can realize just commentaries on classics, counter-rotating and the turn rate adjustment of motor respectively, in order to improve the antijamming capability of system, output relay has adopted the photoelectricity isolation drive.Digital calibration dial plate (2) is one 0～60 a evenly divided, can realize 0～60 second timing or realize 0～60 minute timing by revising plug-in according to user's different requirements.

Regularly setting up procedure is as follows: the pointer reference position is pressed the UP button and is not loosed one's grip in 0 scale position of digital calibration dish, the clockwise deflection of pointer, and the direction deflection that pointer increases towards digital calibration, the backpointer of loosing one's grip promptly rests on current scale place; Otherwise, press the DOWN button and do not loose one's grip, the counterclockwise deflection of pointer, the direction deflection that pointer reduces towards digital calibration, the backpointer of loosing one's grip promptly rests on current scale place, when pointer rests on the zero graduation position, if press the DOWN button, pointer can not deflect.

As long as move the pointer to the non-vanishing position on the index dial, regularly promptly begin, the flicker in 1 second of RUN operating condition light emitting diode once, the pointer motion of on the digital calibration dish, successively decreasing counterclockwise, during the zero position of needle deflection to the digital calibration dial plate, regularly finish, the RUN light emitting diode also stops flicker.

But the utility model is owing to structurally adopted the design of insertion groove posture assembling, therefore being convenient to carry out modular combination with devices such as air switch, leakage switch, A.C. contactors installs, and can conveniently incorporate the occasion that all types of industries is controlled, its digitized pointer indicating mode meets people's observation habit, has the advantages such as precision height, simple to operate, intuitive display, life-span be long.

Claims

1. digital timing controller, comprise the regularly pointer (7) of scale dial plate (2), the drive of micro-step motor driving shaft of controller housing (1), numeral, it is characterized in that a numeral timing scale dial plate (2) is embedded in the middle position of controller housing (1) mutually.

2. digital timing controller according to claim 1, it is characterized in that, controller housing (1) is a convex form, be embedded with regularly scale dial plate (2) of numeral on the middle position of case protrusion part mutually, regularly the scale on the scale dial plate (2) is 0～60 even reticule, and the center of dial plate is equipped with a pointer (7) that is driven by the micro-step motor driving shaft.

3. digital timing controller according to claim 1, it is characterized in that, numeral regularly scale dial plate (2) lower-left side has a contact button that is masked as UP (6), there is a contact button that is masked as DONE (3) lower right side, and numeral regularly dial plate (2) upper left side has a light emitting diode that is masked as RUN (8).

4. digital timing controller according to claim 1, it is characterized in that, wiring step before and after comprising two on the controller housing of convex form (1), comprise two spiral fastening input wires terminals that link to each other with through wires hole on the front step, the 220V civil power front step upper connecting terminal (4) (5) of slave controller housing respectively inserts, comprise three spiral fastening connection terminals that link to each other with through wires hole on the backward step, connection terminal (9) (10) (11) termination on the output control signal slave controller housing backward step of output relay goes out.

5. digital timing controller according to claim 1 is characterized in that, the bottom of controller housing (1) has one can insert the fixedly installation groove (12) of truss.