RU2418336C1 - Electronic relay - Google Patents

Abstract

FIELD: electricity. ^ SUBSTANCE: in electronic relay containing housing, printed-circuit boards for installation of relay elements, replaceable inserts and contact group, there is also permanent storage unit located on individual printed-circuit board and containing combination of output data and electrically programmable by means of burnout of fuse links. Address part of permanent storage unit is intended to receive and process electric signals, and combination of input signals of electronic relay determines the address at which earlier set combination of output data required for generation of control signals is located. Use of four-output microchip is allowed as inserts: input, output, power, earth, and number of inserts corresponds to the number of input signals. Relay can be equipped with resistors with design nominal values corresponding to operating parametres of relay. ^ EFFECT: achieving flexibility of electronic relay with possibility of its being used at various process chains, improving quick operation of electronic relay and simplifying its design as well. ^ 6 cl, 5 dwg

Description

A technical solution is proposed for protection by a patent of the Russian Federation for an invention - a device related to the field of electromagnetic devices (switches) intended for switching electrical circuits for given changes in electrical or non-electrical input quantities, and can be used in various automatic devices used, in particular, in energy, defense industry and other areas of human activity.

Similar solutions are well known in the art.

In particular, an electronic relay is known, including an electronic switch and a protective semiconductor resistance, a power posistor, characterized in that a resistor current sensor is connected to the device and connected to a power resistor by one output, and a symmetric thyristor is used as the electronic key. connected by the anode to the starting winding, the cathode to the mains voltage, and the control electrode through the limiting circuit to the junction of the power posistor and resistor current sensor and, in this case, the restriction circuit consists of resistance and a diode-resistor circuit connected in parallel to it, and the free output of the power posistor is connected to the output of the working winding of the electric motor (see the description of the patent of the Russian Federation No. 2032973, H02H 5/04, H02P 1/42, 10.04. 1995) (1).

The solution is aimed at increasing the versatility of the relay, which provides for working with electronic devices of various types, as well as improving the performance of the relay and the reliability of their work.

Also known from the prior art is an electronic relay containing two switches, a pulse generator, a pulse counter, an output stage and a trigger, characterized in that, in order to simplify the circuit when expanding the range of time delays, a programmed pulse counter, a decoder and a trigger are introduced into it, the output of the pulse generator is connected to the clock input of a programmable pulse counter, the inputs of the setting of the division coefficient of which through the first switch are connected to the logical zero buses and the logical units, and the output is connected to the clock input of the pulse counter, the outputs of the counter are bitwise connected to the inputs of the decoder, connected by the outputs through the second switch to the input R 2 of the trigger, the inputs S and R1 of which are connected to the trigger, the direct output is connected to the output stage and input R of the programmable a pulse counter, and the inverse output is connected to the input R of the pulse counter (see the description of the patent of the Russian Federation No. 2028726, H03K 17/28, 02/09/1995) (2).

The implementation of this technical solution can significantly improve the functionality of the relay.

Similar technical solutions are also known from foreign patent documentation.

So in the patent descriptions according to No. DE 102006030911, H01H 47/00, 09/06/2007, DE 102007031268 A1, H02P 23/06, 01/08/2009, EP 0637865 A2, H02H 7/045, 02/08/1995, FR 2702609, H03K 17/795, 09.16.1994, technical solutions are disclosed for solving similar problems.

The solution that is closest, according to the Applicant, to the claimed solution is the solution disclosed in the description of the patent of the Russian Federation No. 39428, published on July 27, 2004.

A significant drawback of all the solutions listed above is that each of them is designed to solve only those tasks for which they are designed and manufactured, as well as the fact that the above analogues contain an excessive amount of electrical connections and elements and, as a result, unnecessarily complicate the system process control.

The task to which this technical solution is directed is to give universality to an electronic relay with the possibility of its use in various technological chains, while simplifying its design.

The technical result achieved by the implementation of the technical solution consists mainly in increasing the speed of the electronic relay.

The solution to the above problem is achieved due to the fact that in an electronic relay containing a housing, printed circuit boards for installing relay elements, interchangeable inserts and a contact group, according to the claimed invention further comprises a permanent memory device located on a separate circuit board and containing a combination of output data, electrically programmable by burning fusible jumpers, while the address part of the permanent storage device is designed to receive and process electric signals, and the combination of input signals of the electronic relay determines the address at which the previously specified combination of output data necessary for generating control signals is located. In addition, a four-pin microcircuit is allowed as inserts: input, output, power, ground, and the number of inserts corresponds to the number of input signals. Moreover, the relay can be equipped with resistors with rated values corresponding to the operating parameters of the relay.

It is important to note that when changing the combination of input signals, the combination of output signals changes accordingly, which allows flexible control of technological processes. A general view of the relay circuit is shown in FIG.

To protect the address inputs of a read-only memory device, Schmitt triggers are used, which form a stable address signal and allow tuning to be used for various primary sensors.

Read permission is generated by the signal received from the expander by OR, which is triggered upon receipt of at least one address signal.

Data signals are fed to the control output of electronic keys - thyristors, which form the control signals.

To protect the address inputs of a read-only memory device, Schmitt triggers are used, which form a stable address signal and allow tuning to be used for various primary sensors.

Read permission is generated by the signal received from the expander by OR, which is triggered when at least one address signal is received.

Data signals are sent to the control output of electronic keys - thyristors, which form the control signals.

The structural diagram of the relay is shown in figure 2. The scheme is shown conditionally in conjunction with existing microcircuits of the 155 series.

The main difference between the proposed product and its analogues in the country and abroad is that a combination of control signals is not generated in each specific case, but is remembered, and there are ready-made solutions for each situation.

This allows not only to exclude the fight against “racing” circuits (and, as a result, a false positive), but also to provide for all possible intermediate solutions in the entire spectrum of input signal combinations. And the ability to dock products (branching of information inputs, transfer of a “complex” signal from one relay to the inputs of a subsequent relay, etc.) allows you to significantly increase the number of possible solutions and the number of information / control signals.

In addition, the relay is a universal, highly reliable, almost maintenance-free, mass-produced device at the lowest possible cost and is actually already a system.

It is also necessary to consider that this product allows you to transfer information to computer equipment and work in parallel with it. The proposed products are considered on the basis of mass-produced microcircuits.

The solution is illustrated by the following graphic materials.

Figure 1 - General view of the electronic relay.

Figure 2 - Block diagram of an electronic relay.

Figure 3 - Schematic illustration of one of the design options for the layout of the electronic relay.

Figure 4 - Schematic illustration of one of the layout options of the electronic relay.

5 is a table for explaining an example embodiment of the invention.

Figure 1-5:

1 - signals from primary sensors,

2 - address part,

3 - read-only programmable storage device,

4 - information part,

5 - signals to actuators,

6 - Schmitt trigger,

7 - element OR,

8 - connector housing,

9 - printed circuit board

10 - block for removable inserts,

11 - block EEPROM,

12 - contact group

13 - removable insert

14 - power source,

15 - thyristor conversion unit,

16 - KPER connector,

17 - cabinet power automation actuators.

The possibility of carrying out the invention is illustrated by the following example, which is a special case of the invention.

Product design may have various solutions. One possible solution is shown in FIG. In this case, a specially made connector is taken as the base, where in one part a printed circuit board (9) with a block for installing a removable EPROM (11) is installed, and in the counterpart a printed circuit board (9) with a block for installing removable inserts (10) is installed. The number of inserts corresponds to the number of input signals. The insert (10) is a four-output microcircuit (input, output, power, ground), based on the Schmit trigger (6), and serves to normalize the input signal (1) and eliminate possible interference, such as “bounce”. Since the primary sensors of the discrete signal are fairly unified, the general range of inserts (10) is low and there is direct economic feasibility in the development and serial production of these elements. To form the limit signal from the analog sensors in the connector, there are places for soldering resistors with specific rated values.

Formation of a system based on a relay device is carried out by design.

Consider a conventional project for automation of steam boiler control. To do this, fill out Table 1 (see figure 5) of technological parameters and control of actuators.

Table 1 consists of two parts. The upper part is intended to describe all possible options for the technological parameters of the control object, where 0 indicates the absence of a signal, 1 - the presence of a signal. And the bottom of the table determines the necessary actions to maintain the process, where 0 indicates the absence of a control signal, 1 - generation of a control signal.

The completed table is a document necessary for analysis and decision making for building a management system.

Based on the Table, the required number of relays and their relationships can be determined. And if necessary, a complex signal is determined for transmission to an adjacent device, or one or several information signals are propagated in order to 100% satisfy the requirements of the system.

The presented example is conditional and reflected in order to provide a general concept of building automation systems based on electronic relays.

The layout of systems based on such devices may have a different configuration depending on the tasks and requirements presented to each specific system. Possible system layouts are shown in FIG. 4.

As you can see, among other things, when implementing the invention, tasks related to the construction of automatic protection systems and blocking of technological processes and equipment, control of technical means, where the sequence of actions to start / stop the technological equipment are predetermined, are solved.

It is significant that when implementing the invention, it is possible to use an electronic relay, as well as systems consisting of electronic relays built on their multiple simultaneous use, for functioning in various technological chains, with the achievement of increasing the speed of operation of the electronic relay individually or relay chains , while simplifying its design.

Claims (6)

1. An electronic relay comprising a housing, printed circuit boards for installing relay elements, plug-in inserts and a contact group, characterized in that it further comprises a permanent memory located on a separate printed circuit board and containing a combination of output data, electrically programmed by burning fuses, wherein the address part of the permanent storage device is designed to receive and process electrical signals, and the combination of input signals of the electronic relay determines This is the address where the previously specified combination of output data necessary for generating control signals is located. 2. The relay according to claim 1, characterized in that the four-pin microcircuit is used as inserts: input, output, power, earth. 3. The relay according to any one of claims 1 and 2, characterized in that the number of inserts corresponds to the number of input signals. 4. The relay according to claim 1, characterized in that it is additionally equipped with resistors with rated values corresponding to the operating parameters of the relay. 5. The relay according to claim 2, characterized in that it is additionally equipped with resistors with rated values corresponding to the operating parameters of the relay. 6. The relay according to claim 3, characterized in that it is additionally equipped with resistors with rated values corresponding to the operating parameters of the relay.

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