CN2195160Y

CN2195160Y - Programmable contactless switch unit

Info

Publication number: CN2195160Y
Application number: CN94207861U
Authority: CN
Inventors: 王学
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-04-11
Filing date: 1994-04-11
Publication date: 1995-04-19
Anticipated expiration: 2004-04-11

Abstract

The utility model relates to the field of electronic automatic control, particularly a programmable contactless switch unit. The utility model is characterized in that a voltage meter, an electric current meter, indicator lights, buttons, a resetting button and a power switch are arranged on a panel, and a circuit is composed of a power circuit, a control loop and a main control loop. Eight indicator lights (4) form the output circuit of a single-chip microcomputer (89C51), the resetting circuit of the control loop is composed of CD4060, a D1 and a D2, a main control loop is composed of a power module which is connected in parallel with a motor, a current transformer and a protective module, and a plug-in unit is used for signal output. The utility model has the advantages of no contact point, no spark and no noise, and the anti-surge electric current of the utility model is more than 1000A.

Description

Programmable contactless switch unit

The utility model relates to the electronics automation field, is specially a kind of contactless switching device able to programme.

Existing switch cubicle all is the contact switch cabinet, complex structure, simple, the various parts of control all are to have the contact to be connected by auxiliary relay and A.C. contactor, and volume is big, with low cost, maintenance is also inconvenient, and switching speed is slow, utilize microcomputer control mouth able to programme very difficult, disturb big.

The purpose of this utility model is to provide a kind of contactless, no-spark, the noiselessness contactless switching device by microcomputer automatic control.

The purpose of this utility model is achieved in that

Voltmeter, ammeter, indicator light, button, reset button, mains switch are housed on the panel; Circuit is made up of power circuit, control loop, main control loop.Power circuit be by power transformer (T), respectively with two rectifier bridge D ₃, D ₄Connect rectification, warp and C ₈, C ₉, C ₁₀, C ₁₁Regulator block (7805) connects, output dc voltage+5V behind the voltage regulation filtering; Control loop is formed the input circuit of single-chip microcomputer (8C951) by 8 LM113 photoelectrical couplers and resistance, and 3 (7404) and resistance (R), 8 indicator lights are formed the output circuit of single-chip microcomputers (89C51), by CD4060 and D ₁, D ₂Constitute the reset circuit of control loop, main control loop is in parallel with motor (D) by power model (12), and current transformer (14), protection module (13) constitute, export by plug-in unit (11) connection signal.

Advantage of the present utility model is: contactless, no-spark, noiselessness, Antisurge current impact more than 1000A, and adjusting range is along with the variation of load capacity size is adjusted between the 0-50%.Control voltage is the 3.5V-18V direct current.Electric current is less than 150MA.Working temperature is-40-100 ℃, and operating voltage is 220V, 380V, 660V, 1140V AC load.Operation progression is 1200 times/H.

Fig. 1 is the utility model control cabinet principle schematic:

Fig. 2 is the utility model power circuit;

Fig. 3 is the utility model control circuit;

Fig. 4 is the utility model governor circuit.

The 1-casing; the 2-voltmeter; the 3-ammeter; the 4-indicator light; the 5-button; the 6-reset button; the 7-mains switch; the 8-door lock; the 9-panel; 10-three-terminal regulator block (7805); the 11-connector; 12-power model (SSR); the 13-protection module; the 14-current transformer; the 15-crystal oscillator; R-resistance; C-electric capacity; the T-power transformer; the 89C51-single-chip microcomputer; integrated package-7805; CD4060; 7404; 7407; air switch (DZ10-330/60); A; B; the input of C-three phase mains; the N-zero-power line.

Below in conjunction with accompanying drawing in detail the utility model most preferred embodiment is described in detail:

AC power is through two groups of AC power of power transformer (T) output, through rectifier bridge D ₃And D ₄Rectification, capacitor C ₈, C ₁₀Filtering is again by two three-terminal regulator block 7805 voltage stabilizings and capacitor C ₉, C ₁₁Two groups of stable DC voltages are exported in filtering at last.Data input unit of the present utility model is formed an input able to programme by 8 groups of push-button switches, by 8 photoelectricity coupling integrated circuit LM113 conversion, through the processing of single-chip microcomputer 89C51, the start-stop of difference control load, send integrated circuit 7407 again to, move by 7407 control loads.The oscillating circuit of single-chip microcomputer 89C51 is by crystal oscillator, C ₃, C ₄Form, each data processing time of The whole control circuit is 4ms, CD4060 and resistance R ₁₃, R ₁₄, capacitor C ₁Form automatic reset circuit, when control is interfered or crash, pass through D ₁, D ₂Form AND circuit 89C51 is sent into a high level pulse, 89C51 is resetted, machine reenters normal operating conditions.Air switch control three phase mains A, B, C are connected with power model.

Claims

1; a kind of contactless switching device able to programme; it is by casing (1); voltmeter (2); ammeter (3); indicator light (4); button (5); reset button (6); mains switch (7); resistance (R); electric capacity (C); diode (D) crystal oscillator (15); panel compositions such as (9); it is characterized in that: voltmeter (2) is housed on the panel (9); ammeter (3); indicator light (4); button (5); reset button (6); mains switch (7); circuit is by power circuit; control loop; main control loop is formed; 8 indicator lights (4) are formed the output circuit of single-chip microcomputer (89C51); by CD4060 and D1; D2 constitutes the reset circuit of control loop; main control loop is and current transformer (14) in parallel with motor (D) by power model (12); protection module (13) constitutes, and connects signal output by plug-in unit (11).