RU2581175C1 - Device for initiating of unified pyrotechnic device - Google Patents

Abstract

FIELD: unified pyrotechnic device initiation systems.

SUBSTANCE: device for blasting pyro aid comprises a power source, to the negative terminal of which is connected to one output of electronic key electroexplosive network, a microcontroller, a relay switch unit galvanic separation, electromagnetic relays, each winding of which is connected through a respective power amplifier with a first group of outputs of the microcontroller. Second group of outputs of the microcontroller is connected to a group of address inputs of the relay switch, an information input coupled to the first output of the electrical isolation, and the outputs are connected to the control inputs of the electronic switches and other terminal connected to the switching contacts of electromagnetic relays, make contacts are connected to the first terminals electroexplosion networks, the second terminals of which are combined and connected to the positive terminal of the power source. Second output of the galvanic isolation is connected to the negative terminal of the energy source, and inputs - to the strobe output of the microcontroller. Relay switch comprises a power amplifier which inputs are a group of address inputs of the relay switch and outputs connected to the windings of electromagnetic relays, which contacts are appropriately connected to each other and connected to the data input and outputs a relay switch.

EFFECT: invention improves the noise immunity.

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Description

The invention relates to systems for initiating pyromedicines.

Known time relay (see RF patent No. 2072628, "Time relay", LB Egorov, GI Shishkin, publ. In BI No. 3, 01/27/97, H03K 17/28) containing a three-channel pulse generator, three power amplifiers, three electromagnetic relays and three matching elements. Each electromagnetic relay has two groups of contacts and a winding connected to the output of the corresponding power amplifier. The closing contact of the second group of each electromagnetic relay is the output of the corresponding channel of the time relay. The switching contact of the second group of contacts of the first, second and third electromagnetic relays are connected to the make contact of the first group of contacts of the third, first and second electromagnetic relays, respectively. The switching contacts of the first contact groups of all electromagnetic relays are combined, and the opening contacts are connected to the power bus. The inputs of the first, second, and third power amplifiers are connected to the outputs of the corresponding coincidence elements, the first inputs of which are connected to the outputs of the first, second, and third channels of the pulse shaper, and the second inputs are connected to the duplicate outputs of the second, third, and first channels of the pulse shaper. This device is made three-channel, implementing duplication according to the formula "1-2, 2-3, 3-1", but can be performed in multi-channel execution with duplication according to the formula "1-2, 2-3, ..., n-1" .

The disadvantage of this device is the low accuracy of the output pulse time, which is associated with a large delay in the operation of electromagnetic relays, the spread of this delay, both technological and associated with a change in the supply voltage, as well as the presence of contact bounce. Another disadvantage of this device is its low reliability, which is associated with the operation of the contacts of electromagnetic relays at high load currents and the associated accelerated wear of the contacts.

Known network blasting device (see RF patent No. 2202766, "Network blasting device", K.Kh. Pagiev, Yu.S. Petrov, A.A. Maslov, publ. 04/20/2003, F42D 1/055) containing a microcontroller acting as a central control unit, a deceleration device in the form of thyristor switches K1 ... Kn, each of which is connected to a corresponding electric explosion network, a storage device, an external energy source, a voltage converter, a device for monitoring and protection of the device, a current sensor, a voltage sensor, two analog -digital converter and device Your input and display information. The thyristor switches K1 ... Kn are connected to the voltage converter and to the electric explosion network, and the microcontroller is connected to the control inputs of the thyristor switches K1 ... Kn. A current sensor and a voltage sensor are connected in series between the voltage converter and the thyristor switches K1 ... Kn. The outputs of the current and voltage sensors are connected to the inputs of analog-to-digital converters, the outputs of which are connected to the inputs of the microcontroller, the other inputs of which are connected to an input and display information device, a random access memory unit and a device control and protection device, to the inputs of which are connected an analog-digital converter, voltage converter and thyristor switches K1 ... Kn.

The disadvantage of this device is its low resistance to static discharges and electromagnetic interference in electric explosion networks, since there is a galvanic connection between the device outputs and the internal circuits of the device, which can lead to malfunctions of the microcontroller.

The above device is the closest in technical essence to the claimed device and therefore is selected as a prototype.

Achievable technical result is increased noise immunity.

To achieve a technical result, a device for detonating a pyromedicine containing an energy source, to the negative terminal of which are connected one electronic key output, an electric blast network and a microcontroller, new is the addition of a relay switch, a galvanic isolation unit, electromagnetic relays, and windings of each of which connected through the corresponding power amplifier to the first group of outputs of the microcontroller, the second group of outputs of which are connected to the group of address inputs of the relay comm ator, the information input of which is connected to the first output of the galvanic isolation unit, and the outputs are connected to the control inputs of electronic keys, the other terminals of which are connected to the switching contacts of electromagnetic relays, the closing contacts of which are connected to the first outputs of electric explosion networks, the second outputs of which are connected and connected to the positive the terminal of the energy source, the second output of the galvanic isolation unit is connected to the negative terminal of the energy source, and the inputs to the gate outputs of the microcontrol Lera.

The specified set of essential features allows to increase the noise immunity of the device due to the galvanic isolation of the microcontroller from the outputs of the device.

In FIG. 1 is a diagram of a device for detonating a pyromedicine, in FIG. 2 is a diagram of a relay switch.

The device for detonating fireworks contains an energy source 1, to the negative terminal of which are connected one of the terminals of electronic keys 2-1, ..., 2-n, electric blasting networks 3-1, ..., 3-n, microcontroller 4, relay switch 5, galvanic isolation unit 6, electromagnetic relays 7-1, ..., 7-n, the winding of each of which is connected through a corresponding power amplifier 8-1, ..., 8-n to the first group of outputs of the microcontroller 4. The second group of outputs of the microcontroller 4 is connected to the group of address inputs of the relay switch 5, the information input of which is connected n with the first output of the galvanic isolation unit 6, and the outputs are connected to the control inputs of electronic keys 2-1, ..., 2-n, the other terminals of which are connected to the switching contacts of the electromagnetic relays 7-1, ..., 7-n, the closing contacts of which are connected with the first terminals of the electric blasting networks 3-1, ..., 3-n, the second terminals of which are connected and connected to the positive terminal of the power source 1. The second output of the galvanic isolation unit 6 is connected to the negative terminal of the energy source 1, and the inputs to the gate outputs of the microcontroller 4 .

The relay switch contains power amplifiers 9-1 ... 9-n, the inputs of which are a group of address inputs of the relay switch, and the outputs are connected to the windings of the electromagnetic relays 10-1 ... 10-n, the contacts of which are connected respectively to each other and connected to the information input and relay switch outputs.

The device for undermining pyromedicines (see Fig. 1) works as follows.

Commands to detonate pyromedicines are formed at time points determined by the microcontroller program. With a lead time that exceeds the response time of the electromagnetic relay and the bounce of its contacts, the microcontroller 4 generates a signal to activate the electromagnetic relay 7-i (where i = 1, 2, ..., n). At the same time, the microcontroller 4 generates an address code i on the group of address inputs of the relay switch 5. After the pre-emptive interval at a given point in time, a signal is generated for the operation of the 3-i electroexplosive network (where i = 1, 2, ... n), passing through the galvanic isolation unit 6 and contacts of the relay switch 5 to the corresponding electronic key 2-i. The delay of these circuits is units of microseconds, which is a thousand times less than the delays of relay circuits, which are units of milliseconds. Therefore, the accuracy of the formation of executive teams is increased a thousand times.

A prototype of a device for detonating a firearm was conducted using the BMK 5517BTS2U microcircuit as a microcontroller. The rest of the device is based on the relay REK81, field-effect transistors 2P7231A9, transformer TIL3V. Tests of the layout confirmed the operability of the claimed device and its practical value.

Claims (1)

A device for detonating fireworks containing an energy source, to the negative terminal of which are connected one of the electronic key leads, electric blasting networks and a microcontroller, characterized in that an additional relay switch, a galvanic isolation unit, electromagnetic relays are connected, the winding of each of which is connected through an appropriate power amplifier to the first group of outputs of the microcontroller, the second group of outputs of which is connected to the group of address inputs of the relay switch, the information input of which is connected is connected to the first output of the galvanic isolation unit, and the outputs are connected to the control inputs of electronic keys, the other terminals of which are connected to the switching contacts of electromagnetic relays, the closing contacts of which are connected to the first terminals of electric explosion networks, the second conclusions of which are connected and connected to the positive terminal of the energy source, the second the output of the galvanic isolation unit is connected to the negative terminal of the energy source, and the inputs to the gate outputs of the microcontroller.

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