CN214375891U

CN214375891U - Device for realizing multi-channel selection control by using relay

Info

Publication number: CN214375891U
Application number: CN202021531622.4U
Authority: CN
Inventors: 邱爱中; 吕文静
Original assignee: Zhengzhou Normal University
Current assignee: Zhengzhou Normal University
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-10-08
Anticipated expiration: 2030-07-29

Abstract

A device for realizing multi-path selection control by using a relay is characterized by mainly comprising a relay control circuit, a control chip module and the relay, wherein the relay control circuit is used for selectively switching on an accessed circuit and an access circuit and respectively implementing double-end control on the accessed circuit and the access circuit, wherein a normally open contact, a normally closed contact and a public port of the relay are connected with the negative end of the accessed circuit and the output end of the access circuit, and in addition, the normally open contact, the normally closed contact and the public port of the relay are connected with the positive end of the accessed circuit and the input end of the access circuit; when both ends of a certain circuit are selected and connected, the circuit is selected to be connected, and multi-circuit selection control is realized; the first pin and the third pin of the relay connecting the inner coil are respectively connected with a relay control circuit, and the control chip module sends instructions to control the normally open contact and the normally closed contact, so that the small signals are controlled to transmit signals with different powers.

Description

Device for realizing multi-channel selection control by using relay

Technical Field

The utility model relates to a multiple choice field among the electronic technology, a select control circuit's device with the relay realizes the single-channel selection and inserts the multichannel, also can realize the multichannel circuit system. And a plurality of paths of circuit selection are realized by using less relay circuits, and the flexibility and the expansibility of relay control are improved.

Background

The relay has wide application, mature technology and simple structure and is composed of a normally open contact, a normally closed contact, a public port and a coil connected with a circuit; the relay circuit is composed of a switch tube and a small number of auxiliary elements such as resistors, diodes and optocouplers, and is low in cost, simple and easy to implement and high in reliability; the relay has a switch element with an isolation function, and is applied to communication, automatic control, remote sensing, power equipment, electromechanical integrated equipment and the like; because the output and the input of the relay are coupled and isolated, the high-power circuit can be controlled by tiny control quantity; particularly, when the access circuits are the same in multiple paths or the accessed circuits are the same in multiple paths and the circuit system is complex and has high cost, the relay circuit is used for realizing the multi-path selection control according to the idea of time division multiplexing, so that the cost and the complexity can be greatly reduced, and the reliability and the convenience for maintenance can be further improved.

SUMMERY OF THE UTILITY MODEL

Objects of the invention

In view of the wide application and importance of relay circuits, however, it is a fact that the relay contacts are few, and flexibility and expandability are limited, and it is very important to improve the flexibility and expandability. An object of the utility model is to provide a realize device of multiplexer control with relay.

(II) technical scheme

The utility model provides a device for realizing multi-path selection control by a relay, which is characterized by mainly comprising a relay control circuit, a control chip module and a relay, wherein the relay control circuit is used for selectively connecting an accessed circuit and an access circuit, and double-end control is respectively implemented on the accessed circuit and the access circuit; for convenience of explanation, any two ends of the named accessed circuit are respectively a positive end and a negative end, and any two ends of the accessed circuit are an outgoing end and an incoming end; the relay normally open contact, the normally closed contact and the public port are connected with the negative end of the accessed circuit and the output end of the access circuit, and the relay normally open contact, the normally closed contact and the public port are connected with the positive end of the accessed circuit and the input end of the access circuit; when both ends of a certain circuit are selected and connected, the circuit is selected to be connected, and multi-circuit selection control is realized; the first pin and the third pin of the relay connecting the inner coil are respectively connected with a relay control circuit, and the control chip module sends instructions to control the normally open contact and the normally closed contact, so that the small signals are controlled to transmit signals with different powers.

The utility model provides a first technical scheme that can carry out, the negative terminal of being inserted the circuit directly is connected with the access circuit play end, by the positive end of the same kind among the access circuit relaying electrical apparatus's normally open contact, by another positive end of access circuit in the access circuit normally closed contact, access circuit entry relay electrical apparatus public port realizes the control of the single-circuit selection two tunnel.

The utility model provides a second implementable technical scheme, in the positive end of the accessed circuit, A3+ and A4+ connect the first relay normally open contact, A1+ and A2+ connect the first relay normally closed contact, the public port of the first relay connects the access end of the accessed circuit; a2-and A4-in the switched-in circuit are connected with the normally open contact of the second relay, A1-and A3-are connected with the normally closed contact of the second relay, and the common port of the second relay is connected with the output end of the switched-in circuit, so that the device for selecting four paths in one path is formed. The important characteristics and requirements are that any contact of the relay connected with the positive port has the same number and only one group of the same number compared with any contact of the relay connected with the negative port, for example, the upper A3+ and A4+ are connected with the normally open contact of the first relay, A2-and A4-are connected with the normally open contact of the second relay, and the two contacts have the same number only connected with the circuit 4.

The utility model provides a third kind can implement technical scheme, in being inserted the circuit positive end, A5+, A6+, A7+, A8+ connect first relay normally open contact, A1+, A2+, A3+, A4+ connect first relay normally closed contact, the public termination of first relay inserts the entering end of circuit; the output end of the access circuit selects the connection of the negative end of the accessed circuit, the negative ends of the accessed circuit are combined in pairs, A1-A5-is connected with the normally closed contact of the second relay, A2-A6-is connected with the normally open contact of the second relay, A3-A7-is connected with the normally closed contact of the third relay, A4-A8-is connected with the normally open contact of the third relay, and when the number of the access circuits is odd, the last path of the access circuits is a single contact point; the common ports of the second relay and the third relay are respectively connected with a normally open contact and a normally closed contact of a fourth relay, and the common port of the fourth relay is connected with the output end of the access circuit; roughly speaking, half of the positive ends of the switched-in circuits are commonly connected with a normally open contact of a first relay, the other half of the positive ends of the switched-in circuits are commonly connected with a normally closed contact, and the common end of the switched-in circuits is connected with the input end of the switching-in circuit; the output end of the access circuit selects the connection of the negative end of the accessed circuit, the negative ends of the accessed circuit are combined in pairs and are respectively connected with the normally open contact and the normally closed contact of the second relay and the third relay, and when the number of the access circuits is odd, the last path of the access circuits is a single contact point; compared with any contact connected with the positive port of the relay and any contact connected with the negative port of the relay, the connection numbers of the contacts are the same and only one group of the contacts is the same,

or, in the positive end of the switched-in circuit, a9+, a10+, a11+, a12+, a13+, a14+, a15+ and a16+ are connected with the normally-open contact of the first relay, a1+, a2+, A3+, a4+, a5+, A6+, a7+ and A8+ are connected with the normally-closed contact of the first relay, and the common end of the first relay is connected with the switching-in end of the switched-in circuit; the output end of the access circuit is connected with the negative end of the accessed circuit in a connection method that the output end of the access circuit is connected with the common port of the second relay, the normally open contact of the second relay is connected with the common port of the third relay, the normally closed contact of the second relay is connected with the common port of the fourth relay, the normally open contact and the normally closed contact of the third relay are respectively connected with the common ports of the fifth relay and the sixth relay, the normally open contact and the normally closed contact of the fourth relay are respectively connected with the common ports of the seventh relay and the eighth relay, the negative end of the accessed circuit is combined in pairs, A8-A16-is connected with the normally open contact of the fifth relay, A7-A15-is connected with the normally closed contact of the fifth relay, A6-A14-is connected with the normally open contact of the sixth relay, A5-A13-is connected with the normally closed contact of the sixth relay, A4-A12-is connected with the normally open contact of the seventh relay, A3-A11-is connected with the seventh relay normally closed contact, A2-A10-is connected with the eighth relay normally open contact, and A1-A9-is connected with the eighth relay normally closed contact; the number of the relay circuits is increased or decreased, and the circuits with different numbers can be controlled and selectively switched on.

The utility model provides a fourth kind can implement technical scheme, to the connection of access circuit incoming end selection by the positive end of access circuit, first relay common port connects the access circuit's incoming end, first relay normally open contact connects by access circuit A13+, A14+, A15+, A16+, first relay normally closed contact connects second relay common port, second relay normally open contact connects by access circuit A9+, A10+, A11+, A12+, second relay normally closed contact connects third relay common port, third relay normally open contact connects A5+, A6+, A7+, A8+, third relay normally closed contact connects A1+, A2+, A3+, A4 +; the output end of the access circuit is connected with the negative end of the accessed circuit, the common port of the fourth relay is connected with the output end of the access circuit, the normally open contact of the fourth relay is connected with the negative end A4-, A8-, A12-A16-, the normally closed contact of the fourth relay is connected with the common port of the fifth relay, the normally open contact of the fifth relay is connected with the negative end A3-, A7-, A11-A15-, the normally closed contact of the fifth relay is connected with the common port of the sixth relay, the normally open contact of the sixth relay is connected with A2-, A6-, A10-A14-, the normally closed contact of the sixth relay is connected with A1-, A5-, A9-A13-; the number of the relays can be increased or decreased, the relay contacts are evenly distributed and connected to the positive end and the negative end of the accessed circuit, and any contact of the relay connected with the positive port is compared with any contact connected with the negative port, the number of the connecting lines of the relay connected with the positive port is the same, and circuit selection of any number can be realized.

The utility model provides a fifth implementable technical scheme, the normally open contact of first relay connects 2 of access circuit to go into, 4 go into, the normally closed contact of first relay connects 1 of access circuit to go into, 3 go into, first relay public port connects the public port of second relay, the normally open contact of second relay connects A3+, A4+ by the access circuit, the normally closed contact of second relay connects positive terminal A1+, A2+ by the access circuit, the number that any contact of relay connects the positive terminal port (for example the second way is 2) compares only one with the number of any contact access end of another relay and is the same, constitute the selection of being accessed the circuit positive terminal and access circuit access terminal; the normally open contact of the third relay is connected with the output end 3 and the output end 4 of the access circuit, the normally closed contact of the third relay is connected with the output end 1 and the output end 2 of the access circuit, the common port of the third relay is connected with the common port of the fourth relay, the normally open contact of the fourth relay is connected with the negative end A2-, A4-of the access circuit, the normally closed contact of the fourth relay is connected with the A1-, A3-of the access circuit, the number of any contact of the relay connected with the negative end port (for example, the second path is 2) is only the same as the number of any contact of the other relay connected with the output end, the selection of the negative end of the access circuit and the output end of the access circuit is realized, and a device for selecting multiple paths is formed; the number of the relay circuits is increased or decreased to form different numbers of selection circuits.

The utility model provides a sixth implementable technical scheme, wherein, the relay control circuit comprises a component switch tube, an optical coupler, a resistor and a diode, a first pin and a third pin of the relay connecting coil are respectively connected with a power anode and a triode collector, the first pin and the third pin of the relay are connected with a diode in parallel, a base is connected with an emitter in parallel and the emitter is grounded; the first pin of the optical coupler is connected with the anode of the other power supply through a resistor, the second pin is connected with the I/O port of the control chip, the third pin of the optical coupler is connected with the base of the switch tube through a resistor, and the fourth pin of the optical coupler is connected with the first pin of the relay through a resistor.

The utility model discloses well control chip module provides the level to the relay according to the instruction, decides the switch-on of every relay normally open contact and normally closed contact.

Drawings

In order to clarify the technical solutions and embodiments of the present invention more clearly, the drawings used in the technical solutions and embodiments are briefly described below. The drawings given below are some specific embodiments of the present invention, and for those skilled in the art, other drawings and embodiments can be obtained according to the technical steps of the present invention without any creative work.

Fig. 1 is a schematic diagram of the wiring principle in a device for realizing the multi-path selection control by using the relay according to the present invention.

Fig. 2 is a schematic diagram of a single-channel selection and a double-channel selection in a device for realizing multi-channel selection control by using a relay according to the present invention.

Fig. 3 is a schematic diagram of the single-channel selection in a device for implementing the multi-channel selection control by using the relay according to the present invention.

Fig. 4 is a schematic diagram of eight ways of single-way selection in a device for realizing multi-way selection control by using a relay according to the present invention.

Fig. 5 is a schematic diagram of the device for realizing the multi-path selection control by using the relays, which uses eight relays to realize the single-path selection sixteen paths.

Fig. 6 is a schematic diagram of the device for realizing the multi-path selection control by using the relay, wherein the device for realizing the multi-path selection control by using the six relays realizes the single-path selection sixteen paths.

Fig. 7 is a schematic diagram of four ways of selecting four ways in a device for realizing multi-way selection control by using a relay according to the present invention.

Fig. 8 is a schematic diagram of the single-channel selection of six channels in a device for implementing multi-channel selection control by using a relay according to the present invention.

Fig. 9 is a schematic diagram of a relay control circuit of an apparatus for implementing multi-path selection control by using a relay according to the present invention.

Detailed Description

In order to explain the specific embodiments of the present invention more clearly, the following embodiments of the present invention are given. In order to make the objects, technical implementations, advantages and matters of attention of the embodiments of the present invention clearer, the embodiments of the present invention will be described in more detail and completely with reference to the accompanying drawings. It should be noted that the described embodiment is one or a partial embodiment of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

The relay has wide application, simple driving circuit, low price and high reliability, can realize voltage isolation between power supplies and can control high-power transmission by weak signals; however, the input and the output of the relay are only a normally open contact and a normally closed contact, the expansibility and the flexibility are limited, and the research on the expansibility and the flexibility for realizing the control has great significance.

In order to better understand the present embodiment, a method for implementing multi-path control by using a relay according to the embodiments of the present invention will be described in more detail below.

Fig. 1 is a schematic diagram of a wiring principle in an apparatus for implementing multi-path selection control by using a relay according to the present invention, which includes two ports of an accessed circuit and two ports of an accessed circuit; for convenience of illustration and understanding, the multiple paths accessed into the circuit are respectively represented as A1, A2, A3, … and An, and the double ends thereof are respectively represented as A1+, A1-, A2+, A2-, …, An + An-; the access circuit can be a single circuit, the double ends are indicated as 'out and in', and can also be a double circuit and a multi-circuit, the double ends of the multi-circuit are indicated as 1 out, 1 in, 2 out, 2 in, 3 out, 3 in, …, n out and n in.

Example 1

Fig. 2 is a schematic diagram of the single-channel selection and the double-channel selection in the device for realizing the multi-channel selection control by the relay according to the present invention. In the figure, only three pins of the relay are shown, com is a common port pin, 0 is a normally closed contact pin, 1 is a normally open contact pin, and the other two pins which are not shown are connected with a relay control circuit to input voltage and power for the relay (the method is shown in the following figure); in the figure, the negative end of the accessed circuit is directly and simultaneously accessed to the output end of the circuit; one relay is connected with the positive end of the accessed circuit, A1+ is connected with a normally closed contact pin, and A2+ is connected with a normally open contact pin; the common terminal is connected with the access circuit inlet; when the relay is connected with the normally closed contact, only the A1 is connected, and when the relay is connected with the normally open contact, only the A2 is connected, so that the relay realizes the control and the connection of one-way selection of two ways.

Example 2

Fig. 3 is a schematic diagram of the single-channel selection of four channels in a device for implementing multi-channel selection control by using a relay according to the present invention. The access circuit has only one path, the controlled circuit has four paths, in the figure, one relay is connected with the negative end of the accessed circuit, A1-and A3-are connected with normally closed contacts, A2-and A4-are connected with normally open contacts, and the common end is connected with the output end of the access circuit; the other relay is connected with the positive end of the access circuit, A1+ and A2+ are connected with a normally closed contact pin, A3+ and A4+ are connected with a normally open contact pin, and the common end is connected with the access end; setting the state of a relay on a normally closed contact as a 0 state, the state of an on normally open contact as a1 state, and X as any state of 0 or 1 (representing the same method later); when the left relay contact and the right relay contact are combined into 00, only A1 and 01 are switched on, only A2 and 10 are switched on, only A3 and only A4 are switched on, and therefore the two relays realize the control and the access of one-way selection and four-way selection.

Example 3

Fig. 4 is the utility model provides a realize eight schematic diagrams of single-circuit selection in the device of multiple choice control with the relay, realize eight selection circuit of single-circuit selection promptly, a relay J1 control is accessed the circuit positive end, A1+, A2+, A3+, A4+ connect the normally closed contact pin of a relay altogether, A5+, A6+, A7+, A8+ connect the normally open contact pin of this relay altogether, J1's public port connects in circuit access end; the negative terminal of the accessed circuit is controlled by the other two relays J2 and J3, A1-and A5-are connected with the normally closed contact pin of the J2 relay, A2-and A6-are connected with the normally open contact pin of the J2 relay, A3-and A7-are connected with the normally closed contact pin of the J3 relay, and A4-and A8-are connected with the normally open contact pin of the J3 relay; the common port of J2 and J3 is controlled by a J4 relay, the pin of a normally closed contact of J4 is connected with the common port of J2, the pin of a normally open contact of J4 is connected with the common port of J3, and the common port of J4 is connected with the output end of the access circuit. When the states of J4, J3, J2 and J1 are 0X00, only A1 is switched on; 0X01, switch on only a 5; 0X10, switch on only a 2; 0X11, switch on only a 6; 10X0, switch on only A3; 10X1, switch on only a 7; 11X0, only switch on a 4; 11X1, only a8 is turned on.

Example 4

Fig. 5 is an example of the single-channel sixteen-channel selection in the device for implementing the multi-channel selection control by the relay according to the present invention. The relay J1 controls the positive end of the switched-in circuit, and the normally closed contact pins of the J1 relay are connected in common by A1+, A2+, A3+, A4+, A5+, A6+, A7+ and A8+, A9+, A10+, A11+, A12+, A13+, A14+, A15+ and A16+, and are connected in common by the normally open contact pins of the J1 relay; the negative terminal of the accessed circuit is controlled by other four relays J2, J3, J4 and J5, A1 and A9 are connected with a normally closed contact pin of a J2 relay, A2 and A10 are connected with a normally open contact pin of a J2 relay, A3 and A11 are connected with a normally closed contact pin of a J3 relay, A4 and A12 are connected with a normally open contact pin of a J3 relay, A5 and A13 are connected with a normally closed contact pin of a J4 relay, A6 and A14 are connected with a normally open contact pin of a J4 relay, A7 and A15 are connected with a normally closed contact pin of a J5 relay, and A8 and A16 are connected with a normally open contact pin of a J5 relay; the common ports of J2, J3, J4 and J5 are controlled by J6 and J7 relays, a normally closed contact pin of J6 is connected with the common port of J2, a normally open contact pin of J6 is connected with the common port of J3, a normally closed contact pin of J7 is connected with the common port of J4, a normally open contact pin of J7 is connected with the common port of J5, the common ports of the relays J6 and J7 are controlled by a relay J8, a normally closed contact pin of J8 is connected with the common port of J6, a normally open contact pin of J8 is connected with the common port of J7, and the common port of J8 is connected with the output end of the circuit. The gating logic relationship diagram is as follows, the states of J8, J7, J6, J5, J4, J3, J2 and J1 are 0X 0XXX 00, and only A1 is switched on; 0X 0XXX 01, turning on only A9; 0X0XX010, only A2 is turned on; 0X0XX011, turning on only A10; 0X1XX0X0, turning on only A3; 0X1XX0X1, turning on only A11; 0X1XX1X0, turning on A4 only; 0X1XX1X1, turning on A12 only; 10XX0XX0, turning on A5 only; 10XX0XX1, turning on A13 only; 10XX1XX0, turning on A6 only; 10XX1XX1, turning on A14 only; 11X0XXX0, only A7 is turned on; 11X0XXX1, only A15 is turned on; 11X1XXX0, only A8 is on; 11X1XXX1, only A16 was switched on.

The method and principle are similar for selecting more than sixteen circuits.

For a single-way selection of multiple ways, the number n of multiple ways is not equal to 2^mWhen in use, a few relays can be used, or individual normally open contacts or normally closed contacts of the relays can be suspended, but the connection principle and the connection method are the same.

Example 5

Fig. 6 is a schematic diagram of the device for realizing the multi-path selection control by using the relay, wherein the device for realizing the multi-path selection control by using the six relays realizes the single-path selection sixteen paths. The positive end of the accessed circuit and the access circuit are controlled by relays J1, J2 and J3, A1+, A2+, A3+ and A4+ are connected with a J1 relay normally closed contact in a common way, A5+, A6+, A7+ and A8+ are connected with a J1 relay normally open contact in a common way, a J1 public port is connected with a J2 normally closed contact, A9+, A10+, A11+ and A12+ are connected with a J2 relay normally open contact in a common way, a2 public port is connected with a J3 normally closed contact, A13+, A14+, A15+, A16+ are connected with a J3 relay normally open contact in a common way, and a J3 relay public port is connected with the access circuit; the negative end of the accessed circuit and the output end of the accessed circuit are controlled by relays J4, J5 and J6, A1-, A5-, A9-and A13-are connected with a J4 normally closed relay contact, A2-, A6-, A10-and A14-are connected with a J4 normally open relay contact, a J4 common port is connected with a J5 normally closed contact, A3-, A7-, A11-and A15-are connected with a J5 normally open relay contact, a J5 common port is connected with a J6 normally closed relay contact, A4-, A8-, A12-and A16-are connected with a J6 normally open relay contact, and a J6 relay common port is connected with the output end of the accessed circuit; when the states of J6, J5, J4, J3, J2 and J1 are 000000, only A1 is switched on; 000001, only turn on A5; 00001X, only a9 is turned on; 0001XX, only A13 is switched on; 001000, only A2 is turned on; 001001, only A6 is switched on; 00101X, only A10 is turned on; 0011XX, only A14 is turned on; 01X000, only A3 is turned on; 01X001, only A7 is turned on; 01X01X, only A11 is turned on; 01X1XX, only A15 is turned on; 1XX000, only A4 is turned on; 1XX001, only A8 is turned on; 1XX01X, only A12 is turned on; 1XX1XX, only A16 is turned on.

Example 6

The control of the multiple selection multiple paths can be realized by the same idea and method, on the basis of the control of the single selection multiple paths listed above, the number of relays is increased, the access circuit is controlled, and the access circuit is controlled according to double-end control, for example, fig. 7 shows an example of four-path access circuit selection four-path accessed circuit, in the figure, a J1 relay controls the negative end of the accessed circuit, A1-and A3-are connected with a J1 normally closed contact, and A2-and A4-are connected with a J1 normally open contact; the J2 relay is connected with the positive end of the accessed circuit, A1+ and A2+ are connected with a J2 normally closed contact pin, and A3+ and A4+ are connected with a J2 normally open contact pin; the relays J3 and J4 control the output end and the input end of the access circuit, the 1 output end and the 2 output end are connected with the normally closed contact of the J3 relay, the 3 output end and the 4 output end are connected with the normally open contact of the J3 relay, the 1 input end and the 3 input end are connected with the normally closed contact of the J4 relay, the 2 input end and the 4 input end are connected with the normally open contact of the J4 relay, the common ports of J1 and J3 are connected, and the common ports of J2 and J4 are connected; when the states of J4, J3, J2 and J1 are 0000, the access circuit 1 and the accessed circuit A1 are switched on; at 0001, access circuit 1 and accessed circuit a2 are switched on; 0010, access circuit 1 and accessed circuit a3 are switched on; 0011, access circuit 1 is switched on with access circuit a 4; 0100, access circuit 3 and accessed circuit a1 are switched on; 0101, access circuit 3 and accessed circuit a2 are switched on; 0110, access circuit 3 and accessed circuit a3 are switched on; 0111, access circuit 3 and accessed circuit A4 are switched on; access circuit 2 and accessed circuit a1 are switched on at 1000; to 1001, the access circuit 2 is switched on with the accessed circuit a 2; at 1010, the access circuit 2 is switched on by the access circuit a 3; at 1011, the access circuit 2 is switched on with the accessed circuit a 4; at 1100, access circuit 4 is switched on with access circuit a 1; at 1101, the access circuit 4 is switched on by the access circuit a 2; at 1110, the access circuit 4 is switched on with the accessed circuit a 3; 1111, the access circuit 4 is switched on by the access circuit a 4; the four relays realize the control and access of 4 ways of selection.

The principle is the same for other connection methods of multi-path selection multi-path control. The same thinking and method are used for selecting and determining the multi-access circuit, and the control of multi-path selection and multi-path is realized.

Example 7

Fig. 8 is a schematic diagram of the single-channel selection of six channels in a device for implementing multi-channel selection control by using a relay according to the present invention. The positive end of the accessed circuit and the access circuit access end are controlled by a relay J1, A1+, A2+, A3+ and a J1 relay normally closed contact are connected together, A4+, A5+ and A6+ are connected with a J1 relay normally open contact together, and a J1 public port is connected with the access circuit access end; the negative end of the accessed circuit and the output end of the accessed circuit are controlled by relays J2 and J3, A1-A4-are connected with a normally closed contact of a J2 relay together, A2-A5-are connected with a normally open contact of a J2 relay together, a common port of J2 is connected with a normally closed contact of a J3 relay, A3-A6-are connected with a normally open contact of a J3 relay together, and J3 is connected with the output end of the accessed circuit; when the J3, J2, J1 states are 000, only a1 is turned on; when 001, only A4 is switched on; 010, only A2 is switched on; when 011, only A5 is switched on; 1X0, only A3 is turned on; 1X1, only A6 was turned on.

FIG. 9 is a relay control circuit, the core component is a switch tube assisted by an optocoupler, a resistor and a diode, pins 1 and 3 of a relay connection coil are respectively connected with a power supply anode and a triode collector, pins 1 and 3 of the relay are connected with a diode in parallel, a base is connected with an emitter in parallel, and the emitter is grounded; the isolation of two power supplies is carried out through the opto-coupler, and 1 pin of opto-coupler connects another power positive pole through a resistance, and 2 pins connect control chip IO mouth, and 3 pins of opto-coupler connect the switch tube base through a resistance, and 4 pins of opto-coupler connect 1 pin of relay through a resistance.

Claims

1. A device for realizing multi-path selection control by using a relay is characterized by comprising a relay control circuit, a control chip module and the relay, wherein the relay control circuit is used for selectively switching on an accessed circuit and an access circuit and respectively implementing double-end control on the accessed circuit and the access circuit, a normally open contact, a normally closed contact and a public port of the relay are connected with the negative end of the accessed circuit and the output end of the access circuit, and the normally open contact, the normally closed contact and the public port of the relay are connected with the positive end of the accessed circuit and the input end of the access circuit; when both ends of a certain circuit are selected and connected, the circuit is selected to be connected, and multi-circuit selection control is realized; the first pin and the third pin of the relay connecting the inner coil are respectively connected with a relay control circuit, and the control chip module sends instructions to control the normally open contact and the normally closed contact, so that the small signals are controlled to transmit signals with different powers.

2. An apparatus for multiplexing control using a relay according to claim 1, wherein: the negative end of the accessed circuit is directly connected with the output end of the access circuit, the positive end of one path of the accessed circuit is connected with the normally open contact of the relay, the positive end of the other path of the accessed circuit is connected with the normally closed contact, and the input end of the access circuit is connected with the public port of the relay, so that the control of selecting two paths by one path is realized.

3. An apparatus for multiplexing control using a relay according to claim 1, wherein: in the positive end of the switched-in circuit, A3+ and A4+ are connected with the normally open contact of the first relay, A1+ and A2+ are connected with the normally closed contact of the first relay, and the common port of the first relay is connected with the switching-in end of the switching-in circuit; a2-and A4-in the switched-in circuit are connected with the normally open contact of the second relay, A1-and A3-are connected with the normally closed contact of the second relay, and the common port of the second relay is connected with the output end of the switched-in circuit, so that the device for selecting four paths in one path is formed.

4. An apparatus for multiplexing control using a relay according to claim 1, wherein: in the positive end of the switched-in circuit, A5+, A6+, A7+ and A8+ are connected with the normally open contact of the first relay, A1+, A2+, A3+ and A4+ are connected with the normally closed contact of the first relay, and the common end of the first relay is connected with the switching-in end of the switched-in circuit; A1-A5-is connected with the normally closed contact of the second relay, A2-A6-is connected with the normally open contact of the second relay, A3-A7-is connected with the normally closed contact of the third relay, and A4-A8-is connected with the normally open contact of the third relay; the common ports of the second relay and the third relay are respectively connected with a normally open contact and a normally closed contact of a fourth relay, and the common port of the fourth relay is connected with the output end of the access circuit; or, in the positive end of the switched-in circuit, a9+, a10+, a11+, a12+, a13+, a14+, a15+ and a16+ are connected with the normally-open contact of the first relay, a1+, a2+, A3+, a4+, a5+, A6+, a7+ and A8+ are connected with the normally-closed contact of the first relay, and the common end of the first relay is connected with the switching-in end of the switched-in circuit; the output end of the access circuit is connected with a common port of a second relay, a normally open contact of the second relay is connected with a common end of a third relay, a normally closed contact of the second relay is connected with a common end of a fourth relay, a normally open contact and a normally closed contact of the third relay are respectively connected with a common port of a fifth relay and a common port of a sixth relay, a normally open contact and a normally closed contact of the fourth relay are respectively connected with a common port of a seventh relay and a common port of an eighth relay, the negative ends of the accessed circuits are combined in pairs, A8-and A16-are connected with the normally open contact of the fifth relay, A7-and A15-are connected with the normally closed contact of the fifth relay, A6-and A14-are connected with the normally open contact of the sixth relay, A5-and A13-are connected with the normally closed contact of the sixth relay, A4-and A12-are connected with the normally open contact of the seventh relay, A3-and A11-are connected with the normally closed contact of the seventh relay, A2-A10-is connected with the normally open contact of the eighth relay, and A1-A9-is connected with the normally closed contact of the eighth relay.

5. An apparatus for performing multiplexing control using a relay according to claim 1, wherein: the relay control circuit comprises a switching tube, an optocoupler, a resistor and a diode, wherein a first pin and a third pin of a relay connecting coil are respectively connected with a power supply anode and a triode collector, the first pin and the third pin of the relay are connected with the diode in parallel, a base electrode and an emitter electrode are connected with the resistor in parallel, and the emitter electrode is grounded; the first pin of the optical coupler is connected with the anode of the other power supply through a resistor, the second pin is connected with the I/O port of the control chip, the third pin of the optical coupler is connected with the base of the switch tube through a resistor, and the fourth pin of the optical coupler is connected with the first pin of the relay through a resistor.