CN2151585Y

CN2151585Y - Remote group controlling carrier signals collector

Info

Publication number: CN2151585Y
Application number: CN 93233149
Authority: CN
Inventors: 佟锦
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-30
Filing date: 1993-01-30
Publication date: 1993-12-29
Anticipated expiration: 2003-01-30

Abstract

The utility model relates to a receiving apparatus which uses alternate current carrier signals to carry out multi-position control. The receiving apparatus is composed of a voltage transformation rectification circuit, a voltage doubling detection circuit, a decoding circuit and an execution control circuit. After the receiving apparatus demodulating the double audio signals which are transmitted from power lines, the double audio signals are decoded into binary data code, and then, the double audio signals are transformed into high level and low level in number/ mode conversion to impel the execution control circuit to complete control task. The utility model has the advantages of small size, simple structure, low cost, strong anti-interference ability and high reliability. The receiving apparatus cooperates with a transmitting device, the control distance can obtain the radius is two to three kilometers; the receiving apparatus is suitable for various carrier wave remote control systems which require centralized control.

Description

Remote group controlling carrier signals collector

The signal that the utility model relates to a kind of transmission is to be modulated at a multi-step controller that exchanges on the carrier wave, particularly a kind of carrier wave team control remote-receiver.

At present, in building and plant equipment field, realize medium or short range remotely-controlled all be to adopt multicore cable to be connected control desk and actuator, purpose is controlled in realization.As " flexible pier multi-point pushing bridging equipment ", carry out heavy-current control with multicore cable connection control desk and remote operation equipment exactly.This traditional control method cost height, the transmission loss of signal is big on the circuit, poor reliability, complex structure is unfavorable for realizing a plurality of Equipment Control.

The purpose of this utility model provides a kind of simple in structure, response speed is fast, reliability is high carrier wave team control remote-receiver.

The utility model is to include transformation rectification circuit (1) with the carrier wave team control remote-receiver that following mode is finished.By diode D ₁, D ₂The multiplication of voltage detecting circuit of forming with resistance R, capacitor C (2) is through coupling transformer B ₂And capacitor C ₁₄, C ₁₅Connect power line, double-tone frequency carrier signal is demodulated to double-audio signal, after this signal inputs to signal amplification circuit (3), connect decoding circuit (4).Decoding circuit (4) is by double-tone frequency decoder IC ₂Input (IN, SG) received signal detect relatively after.The binary data output signal connects the D/A switch integrated circuit (IC) ₃, the high and low level signal of output connects and carries out control circuit (5).Signal amplification circuit (3) is by operational amplifier IC _1aAnd IC _1bAnti-phase and connect and constitute the big circuit of double operational.Carrying out control circuit (5) is by double D trigger IC ₅Q end output connect the base stage that drives triode BG, its collector electrode connects control and constitutes with relay J.

The utility model adopts the power line carrier remote control to receive and replaces traditional multicore cable heavy-current control reception, this receiving system volume is little, simple in structure, cost is low, soon to cooperate its command range generally can reach radius with dispensing device be the 2-3 kilometer to response speed, and the signal line loss is little, the signal of its reception only receives that the combination of frequency signal that the dispensing device of two settings sends is just effective, otherwise invalid, it is strong to have an antijamming capability, the reliability height.

Fig. 1 is the utility model circuit block diagram.

Fig. 2 is the utility model circuit theory diagrams.

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

As shown in Figure 1 and Figure 2: the utility model is made up of transformation rectification circuit (1), multiplication of voltage detecting circuit (2), signal amplification circuit (3), decoding circuit (4), execution control circuit (5).Transformation rectification circuit (1) is by transformer B ₁Output meets bridge rectifier QL and constitutes, and this circuit provides stable dc supply to this device.Multiplication of voltage detecting circuit (2) is by diode D ₁, D ₂Resistance R and capacitor C ₁₀, C ₁₁, C ₁₂, C ₁₃Form the multiplication of voltage detection through coupling transformer B ₂And capacitor C ₁₄, C ₁₅Connect power line, the carrier wave double-audio signal on the power line is demodulated to double-audio signal.As shown in Figure 2, signal amplification circuit (3) is by operational amplifier IC _1a, IC _1bAnti-phase and connect and constitute the big circuit of double operational, signal is amplified, through capacitor C ₅Resistance R ₉, R ₁₀Output.Decoding circuit (4) is by dual-tone multifrequency decoder IC ₂With the D/A switch integrated circuit (IC) ₃Constitute.Carrying out control circuit (5) is by double D trigger IC ₅With driving triode BG, and control constitutes with relay J.As shown in Figure 2, operation principle of the present utility model is the carrier wave double-audio signal of being come by power line transmission, through capacitor C ₁₄C ₁₅And coupling transformer B ₂Be coupled to by diode D ₁D ₂Behind the multiplication of voltage detecting circuit of forming with the RC element, the carrier wave double-audio signal is demodulated to double-audio signal, this signal inputs to double operational IC _1a, IC _1bCarry out signal and amplify, be fed through DTMF dual-tone multifrequency decoder IC then ₂Input (IN, SG), decoder IC ₂To detecting comparison, when detecting two useful signal frequencies, (frequency shown in subordinate list 1) is promptly at D with the signal frequency accepted ₀～D ₃Its corresponding tetrad number of it is believed that of end output, this data-signal inputs to the D/A switch integrated circuit (IC) ₃Data input pin D ₀～D ₃After receiving the tetrad data, promptly convert binary code the high-low level signal of 1-16 position to, in corresponding positions (1,2 by its inner change-over circuit ... D) output removes to promote to carry out control circuit, " 4 " signal of sending here as dispensing device is through demodulator circuit and decoder IC ₂Be decoded into the tetrad number of " 0100 ", the D/A switch integrated circuit (IC) ₃Convert thereof into " 4 " signal again, and export high level signal (as shown in Figure 2) then to carrying out the double D trigger IC of control circuit (5) in this position ₅Trigger, from IC ₅Q end output high level promote to drive triode BG conducting, make the relay J adhesive on its collector electrode, carry out various control tasks by relay J.In the D/A switch integrated circuit (IC) ₃16 output (1.2.3 ... A, B, C, D) be connected to 16 double D triggers, control 16 respectively and drive triode BG ₁, BG ₂BG ₁₆, control the control relay J on its collector electrode ₁, J ₂J ₁₆, become the logic control circuit of various needs by these relay assemblies, carry out control task.IC1 adopts LM358, and IC2 adopts MT8870.

Claims

1, a kind of carrier wave team control remote-receiver comprises transformation rectification circuit (1), it is characterized in that:

By diode D ₁, D ₂The multiplication of voltage detecting circuit of forming with resistance R, capacitor C (2) is through coupling transformer B ₂And capacitor C ₁₄, C ₁₅Connect power line, double-tone frequency carrier signal is demodulated to double-audio signal, this signal connects decoding circuit (4) after inputing to signal amplification circuit (3);

Decoding circuit (4) is by double-tone frequency decoder IC ₂Input (IN, SG) received signal detect relatively after, the binary data output signal connects the D/A switch integrated circuit (IC) ₃, output high-low level signal connects carries out control circuit (5).

2,, it is characterized in that signal amplification circuit (3) is by operational amplifier IC according to the described receiving system of claim 1 _1aAnd IC _1bAnti-phase and connect and constitute the big circuit of double operational.

3, according to the described receiving system of claim 1, it is characterized in that carrying out control circuit (5) is by double D trigger IC ₅Q end output connect the base stage that drives triode BG, its collector electrode connects control and constitutes with relay J.