RU2580110C1 - Device for initiating of unified pyrotechnic device - Google Patents

Abstract

FIELD: unified pyrotechnic device initiation systems.

SUBSTANCE: instrument to undermine the unified pyrotechnic device comprises a microcontroller, power source, the keys divided into two groups, and electroexplosive network, with one group of keys is in the form of high-and low-voltage semiconductor switches, and the other group - in the form of electro-mechanical switches. Each of the electromechanical keys in this group comprises a control unit and two mechanical contact, the first terminals are connected to the inputs of the high-current semiconductor switches and the second terminal through corresponding electroexplosive network connected to the positive terminal of the power source. Outputs of all high-current semiconductor switches are united and connected to the negative terminal of the power source and the Low voltage to the output semiconductor switches whose inputs are connected to outputs of the control units of electromechanical keys whose inputs are combined and connected to the positive terminal of the power source. Microcontroller is connected to the control inputs of all the keys of the first group.

EFFECT: achievable technical result is to increase the reliability of operation, as well as reducing the size and weight of the device.

1 cl, 2 dwg

Description

The invention relates to systems for initiating pyromedicines.

A device is known for blasting firearms (see RF patent No. 2434199, "A device for blasting fireworks", LB Egorov, KK Kirsanov, IV Tsetlin, published November 20, 2011, F42C 11/04), containing a microcontroller, an energy source, n electroexplosive networks (EMUs) and keys Ki ... KL, the control inputs of which are connected to the corresponding outputs of the microcontroller. The inputs of the first key group Kl ... Kk are connected to the positive terminal of the power source, and the inputs of the other group of keys K _{k □ + □ 1} ... K _{L are} connected to the negative terminal of the power source. In this case, EMUs form a matrix of k rows and Lk columns, the positive terminals of EMU of the i-th row are connected to the output of the i-th key K; and the input of the i-th control circuit SK _i (where i = 1 ... k), and the negative terminals of the EMU of the j-th column are connected to the anodes of the corresponding diodes, the cathodes of which are connected to the output of the j-th key K _j and the input of the j-th control circuit SK _j (where j = k + 1 ... L), the outputs of the control circuits SK ₁ ... SK _{L are} connected to the corresponding inputs of the microcontroller, the gate inputs of the first group of control circuits SK _l ... SK _{k are} connected to the first gate output of the microcontroller, the gate inputs of the second group of circuits control SK _{k □ + □ 1} ... SK _L connected to the second gate output of the microcontroller.

The disadvantages of this device are the large circuit costs due to the use of control schemes, the complexity of its manufacture and reduced reliability. In addition, the device does not guarantee the reliability of the operation with a single failure of the keys and EMU.

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

Achievable technical result is to increase the reliability of operation, as well as reducing the size and weight of the device.

In order to achieve a technical result in a device for detonating a firearm containing a microcontroller, an energy source, keys divided into two groups and electric blasting networks, it is new that one group of keys is made in the form of high-current and low-current semiconductor keys, and the other group in the form of electromechanical keys, each of which in this group contains a control unit and two mechanical contacts, the first conclusions of which are connected to the inputs of high-current semiconductor switches, and the second conclusions through the corresponding Existing electric blasting networks are connected to the positive terminal of the power source, the outputs of all high-current semiconductor switches are combined and connected to the negative terminal of the energy source and to the outputs of low-current semiconductor switches, the inputs of which are connected to the outputs of the control units of electromechanical keys, the inputs of which are combined and connected to the positive terminal of the energy source , while the microcontroller is connected to the control inputs of all the keys of the first group. In addition, control circuits and diodes are excluded from the device for undermining pyromedicines.

The specified set of essential features allows to increase the reliability of operation, as well as reduce the dimensions and weight of the device.

In FIG. 1 is a diagram of a device for detonating a pyromedicine, in FIG. 2 is a timing chart explaining the principle of its operation.

The device for detonating fireworks contains a microcontroller 1, an energy source 2, redundant EMU 3.1_1, 3.1_2, 3. (n * 2) _1, 3. (n *) _ 2, where n = 1, 2, N and keys K. One the key group is made in the form of high-current K _{VT (n + 1)} ... K _{VT (n + m)} , where m = 1, 2, ..., M, n + m = 2, 4, 6, and low-current K _{VT (n)} semiconductor keys, and the other group is in the form of electromechanical keys K ( _{n * 2} ), each of which in this group contains a control unit K _{(n * 2) .1} and two mechanical contacts K _{(n * 2) 2} and K _{(n * 2) .3} , the first conclusions of which are connected to the inputs of high-current semiconductor switches K _{VT (n + 1)} ... K _{VT (n + m)} , and the second conclusions through the corresponding EMUs are connected to the positive terminal of energy source 2, the outputs of all high-current semiconductor switches are combined and connected to the negative terminal of energy source 2 and to the outputs of low-current semiconductor switches, the inputs of which are connected to the outputs of the control units of electromechanical keys, the inputs of which are combined and connected to the positive terminal of the source energy 2, while the microcontroller 1 is connected to the control inputs of all the keys of the first group.

A 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, microcontroller 1 generates a signal to close the low-current semiconductor switch K _{VT (n)} , which, in turn, ensures the operation of electromagnetic relays K _{(n * 2.1) .1} and K _{(n * 2) 1} . After the preemptive interval at a given point in time, the microcontroller 1 issues a command to trigger the EMU by generating a signal to close the corresponding high-current semiconductor switch K _{(n + m)} . 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. As a result, one of the redundant EMUs is triggered 3. (n * 2) _1 or 3. (n * 2) _2. Since EMUs are redundant, for their guaranteed operation, microcontroller 1 gives out signals for operation of the second half of EMUs immediately after the end of signals for operation of the first half.

In FIG. 2 shows the principle of formation of control signals by the microcontroller, as well as current pulses I _{2 of the} energy source, which use EMU.

A prototype of a device for detonating a firearm was carried out using a FPGA 5576XC1T microcircuit as a microcontroller. The rest of the device is implemented on the basis of the relay REC81, field-effect transistors 2P7231A9. Tests of the layout confirmed the operability of the claimed device and its practical value.

Claims (1)

A device for detonating fireworks containing a microcontroller, an energy source, keys divided into two groups and electric explosion networks, characterized in that one group of keys is made in the form of high-current and low-current semiconductor keys, and the other group is in the form of electromechanical keys, each of which This group contains a control unit and two mechanical contacts, the first conclusions of which are connected to the inputs of high-current semiconductor switches, and the second conclusions are connected to pl to the terminal of the power source, the outputs of all high-current semiconductor switches are combined and connected to the negative terminal of the energy source and to the outputs of the low-current semiconductor switches, the inputs of which are connected to the outputs of the control units of electromechanical keys, the inputs of which are combined and connected to the positive terminal of the energy source, while the microcontroller is connected to the control inputs of all keys of the first group.

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