CN2345991Y

CN2345991Y - Multifunction timing controller

Info

Publication number: CN2345991Y
Application number: CN98237019U
Authority: CN
Inventors: 李方明; 宋雪英
Original assignee: Shenyang University
Current assignee: Shenyang University
Priority date: 1998-03-24
Filing date: 1998-03-24
Publication date: 1999-10-27
Anticipated expiration: 2008-03-24

Abstract

The utility model discloses a multifunction timing controller. The aim of the utility model which is a controller is that a controlled electric appliance can be switched on or switched off at two different set time, or the controlled electric appliance can be switched on or switched off by hands at any time. The setting or resetting at a set time of a bistable trigger can be realized by two alarm output signals respectively shaped by a shaping circuit and generated by a digital clock circuit. The setting or resetting of the bistable trigger can be directly realized by a manual control device. The controlled electric appliance can be controlled by the output end of the bistable trigger through a driving circuit. The utility model has the advantages of convenient operation, flexible control mode, low cost and high timing accuracy.

Description

Multi of Function Timing Control Unit

The utility model relates to a kind of time cycle controller.

Existing timing controller has two classes, one class timing controller utilizes an alarm output signal of digital clock to remove to control controlled electrical equipment, but owing to there is not the suitable follow-up delay circuit of platform, can only control the connection of controlled electrical equipment or close at some setting-up times, can not connect controlled electrical equipment sometime, after after a while, close controlled electrical equipment at another setting-up time.Another kind of timing controller has follow-up delay circuit to address the above problem, but on using very big limitation is arranged, and existing follow-up delay circuit mainly contains two kinds, and a kind of is simple rc-delay circuit, and the result is that timing accuracy is low; Another kind is complicated digital delay circuit, and complex structure causes the cost height, uses inconvenient.Particularly above-mentioned various timing controllers all can not be tied platform with manual instant control neatly mutually with timing controlled, regularly close or regularly connect manual-lock etc. as manual connection, to using operation to make troubles.

The purpose of this utility model provides a kind ofly not only can connect or close controlled electrical equipment and can manually control the Multi of Function Timing Control Unit of connecting or closing controlled electrical equipment at any time at two different setting-up times.

The technical solution of the utility model is, it comprises control circuit, cabinet and panel, and its core is a control circuit.Control circuit comprises: digital clock circuit, shaping circuit, trigger flip-flop, manual overvide and driving circuit.Two alarm signal output ends of digital clock circuit link to each other with the reset signal input end with the asserts signal input end of trigger flip-flop through shaping circuit respectively, two output terminals of manual overvide link to each other with direct reseting controling end with the direct set control end of trigger flip-flop respectively, and the output terminal of trigger flip-flop links to each other with controlled electrical equipment by driving circuit.

Compare with prior art, the utility model utilizes digital clock circuit to set the output time of two-way alerting signal, by shaping circuit alarm output signal is converted to single pulse signal and makes trigger flip-flop set or reset at setting-up time, the state of trigger flip-flop output level (high or low) is controlled the break-make of controlled electrical equipment by driving circuit.Like this,, can connect controlled electrical equipment, after after a while, close controlled electrical equipment at another setting-up time at a setting-up time by two different warning output times (being on time and unused time) are set.Utilize manual overvide directly to make trigger flip-flop set or reset, the output level of trigger flip-flop can be controlled the break-make of controlled electrical equipment by driving circuit, so can connect or close controlled electrical equipment at any time by manual overvide.Since the utility model promptly can the controlled electrical equipment of timing controlled open or close, available again manual overvide is controlled opening or closing of controlled electrical equipment at any time, so use very convenient, again because add ons of the present utility model and external control element are few and make full use of the function of digital clock, so cost is low, the timing accuracy height.

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

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

Fig. 2 is the schematic diagram of digital clock circuit;

Fig. 3 is the schematic diagram of shaping circuit;

Fig. 4 is the schematic diagram of trigger flip-flop, manual overvide and driving circuit;

Fig. 5 is the schematic diagram of the another kind of connecting mode of hilted broadsword three-position switch and trigger flip-flop;

Fig. 6 is the schematic diagram of a kind of connecting mode of double-button switch and trigger flip-flop;

Fig. 7 is the schematic diagram of the another kind of connecting mode of double-button switch and trigger flip-flop;

Fig. 8 is the mounting arrangement figure in the cabinet;

Fig. 9 is front panel mounting arrangement figure;

Figure 10 is rear panel mounting arrangement figure.

See Fig. 2, in digital clock circuit, by transformer B, bridge rectifier circuit Q ₁, capacitor C ₁, C ₂With integrated voltage stabilizer IC ₁Constitute power supply of the present utility model.By integrated oscillator divider IC ₂, quartz oscillator JZ, resistance R ₁, capacitor C ₃And C ₄Constitute oscillatory circuit, produce the required clock signal clk of this control circuit, wherein the output terminal of integrated oscillator divider and large scale digital clock integrated circuit (IC) ₃Clock pulse input terminal link to each other, and as trigger flip-flop IC ₆The clock pulse signal (see figure 4).Large scale digital clock integrated circuit (IC) ₃Be the core of digital clock circuit, can adopt LM8365 etc. to have the model of two warning output terminals, the pen section shows signal of its output is shown by the LED nixie display.Digital clock circuit also is connected to switch S ₁, button AN ₁And AN ₂Switch S ₁Be used to control the displaying contents of display, switch S ₁Show on time (output time of one of them alerting signal), switch S when placing the K end ₁Show unused time (output time of another alerting signal), switch S when placing the G end ₁Show working time (current time) when placing the Y end.Utilize button AN ₁And AN ₂Can be respectively to show the time the time and branch carry out adjustment and setting.The open and close machine that reaches setting is during the time, large scale digital clock integrated circuit (IC) ₃Corresponding warning output terminal output alarm signal.

Control circuit of the present utility model has two identical shaping circuits of structure respectively two alerting signals of digital clock circuit output to be carried out shaping.Fig. 3 is the circuit diagram of one of them shaping circuit.Shaping circuit is made of current rectifying and wave filtering circuit, Schmidt trigger and monostalbe trigger three part cascades.By diode D ₁, resistance R ₂And capacitor C ₅The current rectifying and wave filtering circuit that constitutes is converted to direct current signal with the alerting signal of digital clock circuit output, by the inverter ic of two band application schmitt triggers ₄: A and IC ₄: B is that the edge shaping is carried out in one group of forward position to current rectifying and wave filtering circuit output direct current signal, makes it become the precipitous step signal in edge, then by monostalbe trigger IC ₅The forward position of the step signal of shaping circuit output is converted to the single pulse signal with certain width.With monostalbe trigger IC ₅The resistance R that links to each other ₃And capacitor C ₆Be used for determining the width of output single pulse signal.

Fig. 4 is the schematic diagram of trigger flip-flop, manual overvide and driving circuit.Trigger flip-flop IC in this example ₆Adopt the JK trigger flip-flop, its asserts signal input end J links to each other with the output terminal of a shaping circuit, and its reset signal input end K links to each other with the output terminal of another shaping circuit; Its clock pulse input terminal CLK links to each other with the clock pulse signal output terminal of digital clock circuit, to obtain its required clock pulse signal.Manual overvide shown in Figure 4 adopts hilted broadsword three-position switch S ₂, this switch S ₂Stator and trigger flip-flop IC ₆Directset terminal S _DLink to each other this switch S ₂Another stator and trigger flip-flop IC ₆Directreset terminal R _DLink to each other this switch S ₂Also have a stator unsettled.Trigger flip-flop IC shown in Figure 4 ₆Direct control end be that high level is effective, so with hilted broadsword three-position switch S ₂Moving plate meet positive supply+V.See Fig. 5, as trigger flip-flop IC ₆Direct control end be low level when effective, hilted broadsword three-position switch S then ₂Moving plate ground connection.Like this, as hilted broadsword three-position switch S ₂When placing the k end, directly make trigger flip-flop IC ₆Set; As hilted broadsword three-position switch S ₂When placing the g end, directly make trigger flip-flop IC ₆Reset; As hilted broadsword three-position switch S ₂When placing the y end, trigger flip-flop IC ₆Maintain the original state.See Fig. 6 and Fig. 7, manual overvide can also adopt double-button switch AN ₃And AN ₄, button AN ₃One terminate to the IC that gets steady state trigger ₆Direct set control end S _D, button AN ₄An IC who terminates to trigger flip-flop ₆Direct reseting controling end R _D, button AN ₃And AN ₄The other end to receive together be the H end.As trigger flip-flop IC ₆Direct control end be high level when effective, H terminates to positive supply; As trigger flip-flop IC ₆Direct control end be low level when effective, H holds ground connection.By pressing or release button AN ₃And AN ₄Then can directly make trigger flip-flop IC ₆Set, reset or maintain the original state.At Fig. 4 in Fig. 7, for making trigger flip-flop IC ₆Reliably working, its direct set and direct reseting controling end can meet positive supply+V by pull-up resistor when needing, or by pull down resistor ground connection, as shown in phantom in FIG..Trigger flip-flop also can adopt rest-set flip-flop in this example, and its asserts signal input end S links to each other with the output of two shaping circuits respectively with reset signal input end R, and the connection of other ends is identical with JK flip-flop.

See Fig. 4, driving circuit is mainly by transistor Q ₂, light emitting diode D ₃, bidirectional triode thyristor T and additional resistance constitute.As trigger flip-flop IC ₆Output terminal when being high level, transistor Q ₂Conducting also triggers bidirectional triode thyristor T conducting, connects the electric spiral shell of controlled electrical equipment FZ, as trigger flip-flop IC ₆Output terminal when being low level, transistor Q ₂Turn-off with bidirectional triode thyristor T, disconnect the power supply of controlled electrical equipment FZ.Light emitting diode D ₃Be used to show the output services state, CZ ₁And CZ ₂Be the supply socket of external controlled electrical equipment, FU is the fuse of protection bidirectional triode thyristor.

Fig. 8 is the mounting arrangement figure in the cabinet 2, mainly contains printed circuit board (PCB) 1 and transformer B.Most of element of control circuit of the present utility model is installed on the printed circuit board (PCB) 1, and transformer links to each other by lead with printed circuit board (PCB).

Fig. 9 is front panel 4 mounting arrangement figure, is equipped with above: light-emitting diode display is used for the duty of display digit clock; Display control switch S ₁, be used for the show state of control figure clock; High-order adjustment button AN ₁With low level adjustment button AN ₂, be used for digital clock is carried out adjustment; Output state shows diode D ₃, be used to show output state; Hand control switch S ₂, be used for directly controlling output state.Demonstration links to each other by lead with printed circuit board (PCB) with control element.

Figure 10 is the mounting arrangement figure of rear panel 5, is equipped with above: the socket CZ that is used for external controlled electrical equipment ₁And CZ ₂, the mount pad 6 of fuse FU and AC power extension line hole 7.Each element of installing on the rear panel links to each other with printed circuit board (PCB) or transformer by lead.

Claims

1, a kind of Multi of Function Timing Control Unit, by control circuit, cabinet and panel are formed, its control circuit comprises: digital clock circuit, shaping circuit, trigger flip-flop, manual overvide and driving circuit, it is characterized in that: two alarm signal output ends of digital clock circuit link to each other with the reset signal input end with the asserts signal input end of trigger flip-flop through shaping circuit respectively, two output terminals of manual overvide link to each other with direct reseting controling end with the direct set control end of trigger flip-flop respectively, and the output terminal of trigger flip-flop links to each other with controlled electrical equipment by driving circuit.

2, Multi of Function Timing Control Unit according to claim 1, it is characterized in that: said shaping circuit is made of current rectifying and wave filtering circuit, Schmidt trigger and monostalbe trigger three part cascades, alerting signal by digital clock circuit output is converted to DC voltage through current rectifying and wave filtering circuit, through Schmidt trigger shaping is carried out in the forward position of DC voltage again, after monostalbe trigger converts the forward position of DC voltage to single pulse signal.

3, Multi of Function Timing Control Unit according to claim 1, it is characterized in that: said manual overvide is the hilted broadsword three-position switch, two stators of this switch link to each other with direct reseting controling end with the direct set control end of trigger flip-flop respectively, also have a stator unsettled; When the direct control end of trigger flip-flop is high level when effective, the moving plate of this switch connects the positive electricity root; When the direct control end of trigger flip-flop is low level when effective, the moving plate ground connection of this switch.

4, Multi of Function Timing Control Unit according to claim 1, it is characterized in that: said manual overvide is the double-button switch, one of one of them pushbutton switch terminates to the direct set control end of trigger flip-flop, one of another pushbutton switch terminates to the direct reseting controling end of trigger flip-flop, the other end of these two pushbutton switches is connected together and is the H end, when the direct control end of trigger flip-flop is high level when effective, H termination positive supply; When the direct control end of trigger flip-flop is low level when effective, H holds ground connection.