CN215219460U

CN215219460U - Relay control module and relay array control device formed by same

Info

Publication number: CN215219460U
Application number: CN202120625237.4U
Authority: CN
Inventors: 钱璐帅; 富雅琼
Original assignee: Hangzhou Ouwei Electronic Technology Co ltd
Current assignee: Hangzhou Ouwei Electronic Technology Co ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-12-17
Anticipated expiration: 2031-03-26

Abstract

A relay control module is characterized in that a high end of a first diode is connected with a low end of a second diode to serve as a first control end to be connected with an output end of a second driver; the high end of the third diode, the low end of the fourth diode, the low end of the relay closing control coil and the high end of the relay opening control coil are connected together to form a common control end, and the common control end is connected with the output end of the first driver; and the high end of the second diode and the high end of the fourth diode are connected with the low end of the relay disconnection control coil. Compared with the prior art, the utility model discloses utilize the one-way nature of switching on of diode to N +1 controller IO mouth and N +1 driver, the closure of controlling N relay, disconnection compare in traditional control method, and the use of the reducible N-1 controller IO mouth of the relay of drive equally many and N-1 driver has to a great extent reduced the device cost and has reduced the circuit wiring degree of difficulty.

Description

Relay control module and relay array control device formed by same

Technical Field

The utility model relates to an automatic test field, concretely relates to relay control module and relay array controlling means who constitutes thereof.

Background

The relay is widely applied in the field of automatic testing, and is particularly suitable for controlling the on-off of strong electric signals, precise measurement signals and the like. The closing and opening of the relay require the controller to give control signals and drive through the driver. However, in some cases, such as a multiplex scan switch, a large number of relays need to be controlled. Taking a 10-channel two-wire scanning switch as an example, a total of 20 magnetic latching relays need to be controlled. Inside each magnetic latching relay, there are 1 closed control coil and 1 open control coil respectively. According to the conventional relay control method, the on/off of each relay needs to be driven by 2 drivers, and as shown in fig. 1, 2 controllers IO ports correspondingly control the on/off of each relay. Thus, 40 drivers are required for 20 relays, and 40 IO ports are required for the controller. Some relay control devices reduce the use of controller IO ports by using a large number of serial-in and parallel-out shift registers, but increase the cost and complicate the wiring.

In summary, there is a need to provide a new relay control module to solve the problem of efficient control of the relay array, so as to reduce the usage of the IO port resources of the driver and the controller, thereby reducing the circuit complexity and the design cost.

SUMMERY OF THE UTILITY MODEL

There is above defect to prior art, the utility model provides a relay control module and relay array controlling means who constitutes to solve the required circuit complicacy of prior art relay controlling means and defect that manufacturing cost is high.

The technical scheme of the utility model is realized like this:

a relay control module comprises a controller, a relay, a first driver, a second driver, a first diode, a second diode, a third diode and a fourth diode;

the high end of the first diode and the low end of the second diode are connected together and then are used as a first control end to be connected with the output end of the second driver;

the high end of the third diode, the low end of the fourth diode, the low end of the relay closing control coil and the high end of the relay opening control coil are connected together to form a common control end, and the common control end is connected with the output end of the first driver;

the controller comprises a plurality of IO ports, wherein two IO ports are respectively and correspondingly connected with the input end of the first driver and the input end of the second driver;

the low end of the first diode and the low end of the third diode are connected with the high end of the relay closing control coil;

the second diode high side the fourth diode high side all with relay disconnection control coil low end interconnect.

Preferably, the relay is a common electromagnetic relay or a magnetic latching relay; the relay internally comprises a closing control coil and an opening control coil; the relay is of a normally open type, a normally closed type or a switching type.

Preferably, the first driver and the second driver are Darlington tubes, triodes, field effect tubes or special relay driving chips.

The utility model discloses still provide a relay array controlling means: the relay control module comprises a plurality of relay control modules;

the relay control modules share the same controller and the first driver;

and various common control ends in the relay control modules are connected with each other.

Compared with the prior art, the utility model discloses there is following beneficial effect:

the utility model discloses a relay control module and relay array controlling means who constitutes thereof utilizes the one-way nature of switching on of diode to N +1 controller IO mouth and N +1 driver, the closure of controlling N relay, disconnection compare in traditional control method, and the reducible N-1 controller IO mouth of the relay that drives equally many and the use of N-1 driver, to a great extent have reduced the device cost and have reduced the circuit wiring degree of difficulty.

Drawings

FIG. 1 is a schematic diagram of a conventional relay control method;

fig. 2 is a schematic diagram of the high and low ends of the control coil of the relay of the present invention;

fig. 3 is a schematic diagram of the high and low ends of the diode of the present invention;

fig. 4 is a schematic diagram of a relay control module of the present invention;

fig. 5 is a schematic diagram of the relay array control device of the present invention.

In the figure: 1-close control coil, 2-control coil low end, 3-open control coil, 4-control coil high end, 5-diode high end, 6-diode low end, 7-controller, 8-second driver, 9-first diode, 10-third diode, 11-relay, 12-fourth diode, 13-second diode, 14-first driver.

Detailed Description

The present invention will be described more fully and clearly with reference to the accompanying drawings, which are incorporated in and constitute a part of this specification.

As shown in fig. 2, the relay 11 is a common electromagnetic relay or a magnetic latching relay, and has a closing control coil 1 and an opening control coil 3; the closing control coil 1 and the opening control coil 3 both comprise a high end 4 and a low end 2; the relay is of a normally open type, a normally closed type or a switching type.

As shown in fig. 3, the first diode 9, the second diode 13, the third diode 10, and the fourth diode 12 each include a high end 5 and a low end 6.

As shown in fig. 4, the relay control module of the present invention includes a controller 7, a relay 11, a first driver 14, a second driver 8, a first diode 9, a second diode 13, a third diode 10, and a fourth diode 12;

the high end 5 of the first diode 9 and the low end 6 of the second diode 13 are connected together and then are used as a first control end to be connected with the output end of the second driver 8;

the high end 5 of the third diode 10, the low end 6 of the fourth diode 12, the low end 2 of the relay 11 closing control coil 1 and the high end 4 of the relay 11 opening control coil 3 are connected together to form a common control end, and the common control end is connected with the output end of the first driver 14;

the controller comprises a plurality of IO ports, wherein two IO ports are respectively connected with the input end of the first driver 14 and the input end of the second driver 8;

the low end 6 of the first diode 9 and the low end 6 of the third diode 10 are mutually connected with the high end 4 of the relay 11 closing control coil 1;

the high end 5 of the second diode 13 and the high end 5 of the fourth diode 12 are connected with the low end 2 of the relay 11 disconnection control coil 3.

The first driver 14 and the second driver 8 are Darlington tubes, triodes, field effect tubes or special relay driving chips.

As shown in fig. 5, the present invention includes a plurality of relay control modules as described above; the relay control modules share the same controller 7 and first driver 14; and common control ends in the relay control modules are mutually connected.

The working principle of the utility model is as follows:

take the control of the relay in fig. 4 as an example. When the relay needs to be closed, the IO port of the controller outputs a logic level '1' to the second driver, and the second driver correspondingly outputs the logic level '1'; the controller IO port outputs a logic level "0" to the first driver, and the first driver correspondingly outputs the logic level "0". Under this condition, only the first diode is forward-connected, the other diodes are reverse-connected, and the corresponding closed control coil has forward current flowing through it, so the relay is closed. When the relay needs to be disconnected, the IO port of the controller outputs a logic level '0' to the second driver, and the second driver correspondingly outputs the logic level '0'; the controller IO port outputs a logic level "1" to the first driver, and the first driver correspondingly outputs a logic level "1". Under the condition, only the second diode is in forward conduction, the other diodes are in reverse cut-off, and forward current flows in the corresponding cut-off control coil, so that the relay is cut off.

Take the example of the relay control numbered X in fig. 5, where X is less than N. When the relay numbered X is to be closed, the X +1 th driver outputs a logic level "1", the first driver outputs a logic level "0", and the remaining drivers all output a logic level "0". In this condition, only the forward current flows in the closing control coil of the relay X, and the relay X is closed. When the relay with the number X is to be turned off, the X +1 th driver outputs a logic level "0", the first driver outputs a logic level "1", and the remaining drivers all output a logic level "1". In this condition, only the forward current flows in the turn-off control coil of the relay X, and thus the relay X is turned off. The relay X can be selected in multiple ways, namely, a plurality of relays can be closed or opened simultaneously. Note that any two relays cannot perform the closing or opening operation at the same time, and need to perform sequentially.

Synthesize the utility model discloses a can know, the utility model discloses a relay control module and relay array controlling means who constitutes thereof utilizes the one-way nature of switching on of diode to N +1 controller IO mouth and N +1 driver, the closure of controlling N relay, disconnection compare in traditional control method, and the use of the reducible N-1 controller IO mouth of the relay of drive as much and N-1 driver has to a great extent reduced the device cost and has reduced the circuit wiring degree of difficulty.

Claims

1. A relay control module, characterized by: the circuit comprises a controller, a relay, a first driver, a second driver, a first diode, a second diode, a third diode and a fourth diode;

2. The relay control module of claim 1, wherein: the relay is a common electromagnetic relay or a magnetic latching relay, and the relay internally comprises a closing control coil and an opening control coil; the relay is of a normally open type, a normally closed type or a switching type.

3. The relay control module of claim 1, wherein the first and second drivers are darlington transistors, triodes, field effect transistors, or relay driver specific chips.

4. A relay array control apparatus characterized in that: comprising several relay control modules according to any of claims 1-3;

the relay control modules share the same controller and the first driver;

and common control ends in the relay control modules are connected with each other.