KR20110092796A - Electronic delay detonation apparatus and electronic detonation blasting system - Google Patents

Abstract

PURPOSE: An electronic delay detonation device and an electronic detonation blasting system are provided to implement accurate blasting by preventing misfire through inspection of an ignition element before blasting. CONSTITUTION: An electronic delay detonation device comprises an ignition output terminal(170) to which an ignition element is connected, a power input terminal which receives power from an external device, an energy charging unit(140) which charges energy from the power supplied to the power input terminal, a time control unit(150) which delays time after the charged energy reaches the specified voltage and outputs a trigger signal, an ignition switching element(160) which supplies the charged energy to the ignition element in response to the trigger signal, and a resistance which connects the lines of the power input terminal and the ignition output terminal.

Description

ELECTRONIC DELAY DETONATION APPARATUS AND ELECTRONIC DETONATION BLASTING SYSTEM

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic delay primer device and an electronic primer blasting system, and more particularly, to an electronic delay primer device and an electronic primer blasting system capable of preventing misfire by inspecting a connection of an ignition element before blasting.

In general, rocks are excavated when building the lower foundations of high-rise buildings or other large ground structures, or when building underground structures such as subways or underground tunnels. At this time, the rock is blasted and crushed by explosives such as dynamite, and the blasting of the rock excavates a plurality of blast holes in the rock, and charges and explodes the explosives there.

The device that leads the explosives mounted on the rock to the explosion is called a primer device. An electronic device that charges electrical energy supplied from the blasting device to the energy charging unit and performs a switching operation after a desired delay time in response to the charged electrical energy. A delay primer device is known from Patent Document 1 below.

On the other hand, a plurality of electronic delay primer device is used in parallel at the time of blasting. However, Patent Document 1 does not disclose a method for checking whether a plurality of electronic delay primer devices are properly connected at the time of blasting.

In addition, the electronic delay primer device is finished in one use, the Korean Patent Laid-Open Patent Document 1 has a problem of increasing the production cost by supplying the rated power to the IC timer using an expensive constant voltage circuit.

In addition, the electronic delay primer device of Patent Document 1 has a problem in stability because the primer device is operated and ignited when DC power or AC power is supplied from an external device instead of the blast device.

Patent Document 1: Korean Patent Publication No. 1999-0035969

In order to solve the above problems, an object of the present invention is to provide an electronic delay primer device and an electronic primer blasting system that can prevent the misfire by checking the connection of the ignition element, etc. before blasting.

In addition, an object of the present invention is to provide an electronic delay primer device and an electronic primer blasting system having a band pass filter and improved stability to operate only when a power supply having a predetermined frequency is supplied.

In addition, an object of the present invention is to provide an electronic delay primer device and an electronic primer blasting system in which the production cost is reduced by providing an operating voltage to the microcomputer using a simple distribution circuit that eliminates an expensive constant voltage circuit.

In addition, an object of the present invention is to provide an electronic primer blasting system including a blasting device for adjusting the output voltage based on the number of connections of the electronic delay primer device and the line resistance value of the power cable.

In order to achieve the above object, the present invention provides an electronic delay primer device for igniting an ignition element, comprising: an ignition output terminal connecting the ignition element, a power input terminal for receiving power supplied from an external device; An energy charger for charging energy from the power supplied to the power input terminal, a time controller for delaying a predetermined time after the energy charged in the energy charger reaches a predetermined voltage value, and outputting a trigger signal; An ignition switching element for supplying energy charged in the energy charging unit to the ignition element in response to a trigger signal, and two resistors respectively connecting the lines of the power input terminal and the lines of the ignition output terminal. .

The time controller may further include a programmable microcomputer and a voltage distribution circuit configured to provide a constant voltage by distributing energy charged in the energy charging unit to a power terminal of the microcomputer.

A first capacitor may be connected between an internal ground line and a power terminal of the microcomputer, and a second capacitor and a resistor may be connected between the positive electrode line of the energy charging unit and the power terminal of the microcomputer.

In addition, the power supplied from the external device is a power having a predetermined frequency, it is preferable to include a band pass filter for passing a power having the predetermined frequency between the power input terminal and the energy charging unit.

The electronic delay primer device may further include a rectifier for rectifying power supplied from the external device.

The present invention provides a blasting primer system having an electronic delay primer device for igniting an ignition element and a blasting device for supplying power to the electronic delay primer device through a power cable, wherein the electronic delay primer device connects the ignition element. An ignition output terminal, a power input terminal for receiving power supplied from the blasting apparatus through the power cable, an energy charging unit for charging energy from power supplied to the power input terminal, and a charging unit for the energy charging unit A time controller for delaying a predetermined time and outputting a trigger signal after the supplied energy reaches a predetermined voltage value, and an ignition switching element for supplying energy charged in the energy charging unit to the ignition element in response to the trigger signal. And the lines of the power input terminal and the And two resistors respectively connecting the ignition output terminals, wherein the blasting device is based on a number of the primer power supply unit for supplying power to the electronic delay primer device through the power cable, and the number of the electronic delay primer device connected to the blast output device. By including a voltage controller for controlling the primer power supply to adjust the output voltage of the power to be supplied to the electronic delay primer device, the above object can be achieved.

The voltage controller preferably controls the primer power supply to adjust the output voltage of the power to be supplied to the electronic delay primer device in consideration of the line resistance of the power cable.

The blasting apparatus may further include a connector for connecting the power cable, and a blasting switching unit driven by an operation of the blasting switch between the voltage control unit and the connector.

The blasting apparatus may further include an input unit for setting the number of the electronic delay primer device is connected and the line resistance of the power cable.

According to the present invention, a plurality of electronic delay primer devices connected in parallel are inspected before the blasting, so as to prevent a partial misfire by inspecting the connection of the ignition element and the like.

Further, according to the present invention, it is possible to improve the stability of the electronic delay primer device by providing a band pass filter to operate only when power having a predetermined frequency is supplied.

In addition, according to the present invention, the production cost of the electronic delay primer device can be reduced by providing the rated voltage to the microcomputer using a simple distribution circuit from which an expensive constant voltage circuit is removed.

Further, according to the present invention, the delay error of the electronic delay primer device can be minimized by adjusting the output voltage based on the number of connections of the electronic delay primer device and the line resistance of the power cable.

1 is a block diagram of an electronic delay primer device according to an embodiment of the present invention.
FIG. 2 is a circuit diagram illustrating in more detail a block diagram of the electronic delay primer device of FIG. 1.
3 is a block diagram of an electronic delay primer device according to another embodiment of the present invention.
Figure 4 is a block diagram of an electronic primer blasting system according to an embodiment of the present invention.
FIG. 5 is a block diagram illustrating the blasting apparatus shown in FIG. 4.
6 is a view illustrating in detail the blasting apparatus shown in FIG.

Hereinafter, an electronic delay primer device and an electronic primer blasting system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an electronic delay primer device according to an embodiment of the present invention.

As shown in FIG. 1, the electronic delay primer device 100 is connected to the blasting device 300 through a power cable 200.

The electronic delay primer device 100 includes a power input terminal 110, a rectifying unit 130, an energy charging unit 140, a time controller 150, an ignition switching element 160, an ignition output terminal 170, and two inspections. Resistors Rt1 180 and Rt2 182 and an ignition element 190.

The power input terminal 110 is connected to the power cable 200 by soldering or the like. The output power of the blasting apparatus 300 supplied to the power input terminal 110 is supplied to the rectifier 130 through the power lines 112 and 114.

The rectifier 130 is installed between the power input terminal 110 and the energy charging unit 140 to rectify and output the power supplied from the blasting apparatus 300. Since the rectifier 130 matches the polarity of the power input to the power input terminal 110 and the polarity of the energy charging unit 140, the polarizing operation can be ignored and the connection work can be performed to improve work efficiency.

The energy charger 140 charges energy from the power supplied from the blasting apparatus 300. The energy charged in the energy charging unit 140 is supplied to generate the operating power required for the time controller 150, and is also supplied to ignite the ignition element 190.

When the energy charged in the energy charger 140 reaches a predetermined voltage value and the operating power is supplied, the time controller 150 outputs a trigger signal after delaying the set time.

The ignition switching element 160 is turned on and shorted when a trigger signal is provided from the time controller 150. When the ignition switching element 160 is turned on, the energy charged in the energy charging unit 140 is supplied to the ignition element 190 through the ignition output terminal 170, so that the ignition element 190 ignites.

The test resistors Rt1 180 and Rt2 182 are resistors for checking whether the ignition element 190 is properly connected. The test resistor Rt1 180 is connected to the power line 112 of the power input terminal 110 and the input line 172 of the ignition element, and the test resistor Rt2 182 is connected to the power line 114 of the power input terminal 110. ) And the input line 174 of the ignition element. These test resistors Rt1 180 and Rt2 182 allow the power input terminal 110 to check whether the ignition element 190 is properly connected to the ignition output terminal 170.

FIG. 2 is a circuit diagram illustrating in more detail a block diagram of the electronic delay primer device of FIG. 1.

The rectifier 130 is a full-wave rectifier circuit composed of four diodes D1 132, D2 134, D3 136, and D4 138, and the energy charger 140 includes a capacitor C1 142 having a large capacity. .

The time controller 150 includes the resistors R3 153 and R4 154 for supplying the operating power to the programmable microcomputer IC1 151 and the terminal 8 of the microcomputer IC1 151 and for supplying a reset signal to the terminal 1; C2 (155) and capacitor C3 (156). The microcomputer IC1 151 is provided with an internal oscillator 252, a timer function 254, a trigger signal generator 256, a reset operation unit 258, and a storage unit 260. The trigger signal is output. The storage unit 260 stores a set time to be delayed. In addition, the resistor R3 153, the capacitor C2 155, and the capacitor C3 156 are voltage distribution circuits for supplying a constant voltage to the terminal 8 of the microcomputer IC1 151. Therefore, since the constant voltage IC is not used, the cost can be reduced. have.

The ignition switching element 160 includes a thyristor SCR 162, and a trigger signal of the time controller 150 is supplied to the gate of the thyristor SCR 162 through the resistor R5 158.

On the other hand, the ignition element 190 includes an ignition resistor Rb1 192, and the ignition resistor Rb1 192 is connected to the ignition output terminal 170. The ignition resistor Rb1 192 has a very small resistance value, for example, about 0.1Ω.

When the electronic delay primer device 100 shown in the block diagram of FIG. 1 and the circuit diagram of FIG. 2 is manufactured, the operator can check whether the ignition resistor Rb1 192 is properly connected to the ignition output terminal 170.

Hereinafter, the operation of the electronic delay primer device will be described using the block diagram of FIG. 1 and the circuit diagram of FIG. 2.

First, when the power supplied from the blasting apparatus 300 is input to the power input terminal 110, the power is supplied by the radio wave diodes D1 132, D2 134, D3 136, and D4 138 of the rectifier 130. Since it is rectified, energy is charged in the capacitor C1 142 of the energy charging unit 140.

When the power supplied from the blasting apparatus 300 is continuously input to the power input terminal 110, the capacitor C1 142 of the energy charging unit 140 is continuously charged with energy, thereby increasing the charging voltage. Since the charging voltage of the energy charging unit 140 increases, the voltage of the capacitor C3 156 also increases, and an operating voltage is supplied to the terminal 8 of the microcomputer IC1 151. Although the microcomputer IC1 151 is in an operable state, since the reset signal is supplied through the terminal 1, the reset operation unit 258 operates to perform a reset.

The microcomputer IC1 151 operates the internal oscillator 252 when the reset operation unit 258 is reset, and reads the set time stored in the storage unit 260 when the operation of the internal oscillator 252 is stabilized, thereby providing a timer function. The unit 254 is operated. When the set time set in the timer function unit 254 is completed, the microcomputer IC1 151 operates the trigger signal generator 256 to generate and output a trigger signal.

The trigger signal output from the microcomputer IC1 151 is supplied to the gate terminal of the thyristor SCR 162 of the ignition switching element 160 through the resistor R5 158, and the thyristor SCR 162 is turned on. As a result, the energy charged in the condenser C1 142 of the energy charging unit 140 is supplied to the ignition resistor Rb1 192 of the ignition element 190, so that the ignition resistor Rb1 192 generates heat to ignite.

3 is a block diagram of an electronic delay primer device according to another embodiment of the present invention.

As shown in FIG. 3, the electronic delay primer device 100 includes the power input terminal 110, the rectifier circuit 130, the energy charging unit 140, the time controller 150, and the ignition shown in FIGS. 1 and 2. A band pass filter (BPF) 120 is shown in addition to the switching element 160, the test resistor 170, the ignition output terminal 180, and the ignition element 190.

The BPF 120 is a filter that passes through a power source having a frequency of several tens of KHz. To this end, the blasting apparatus 300 outputs a power source having a frequency of several tens of KHz. If DC power or 60Hz commercial power is supplied to the power input terminal 110 from another external device, these powers may not be charged to the energy charging unit 140 by passing through the BPF 120 and thus malfunction due to the incorrect supply of power. It can prevent the stability. And examples of the BPF 120 are shown capacitors C4 122 and C5 124 on each of the power lines 112, 114.

Figure 4 is a block diagram of an electronic primer blasting system according to an embodiment of the present invention.

As shown in FIG. 4, the electronic primer blasting system includes a blasting apparatus 300, and the blasting apparatus 300 includes a plurality of electronic delay primer apparatuses 100-1, 100-2, through a power cable 200. 100-n) are connected in parallel.

The electronic delay primer devices 100-1, 100-2, and 100-n illustrated in FIG. 4 may be any one of the block diagram of FIG. 1, the circuit diagram of FIG. 2, and the block diagram of FIG. 3.

FIG. 5 is a block diagram illustrating the blasting apparatus shown in FIG. 4.

As shown in FIG. 5, the blasting apparatus 300 includes a battery unit 510, an input unit 520, a display unit 530, a constant voltage unit 540, a voltage controller 550, a primer power supply unit 560, And a blast switch 570 and a connector 580.

The battery unit 510 is connected in series with five batteries having a DC voltage of 6V. The output voltage 30V of the battery unit 510 is supplied to the primer power supply unit 560. On the other hand, since the operating voltage of the voltage controller 540 and the like is 5V or less, the operating voltage down through the constant voltage unit 540 is supplied.

The input unit 520 is for inputting a setting value necessary for the user to the blasting apparatus 300, the user through the input unit 520 and the number of the electronic delay primer device 100 is connected to the power cable 200 Line resistance can be entered. In addition, the display unit 530 displays a set value input through the input unit 520.

The constant voltage unit 540 lowers the 30V voltage output from the battery unit 510 to, for example, a 5V voltage and supplies the same to the voltage controller 550.

The voltage controller 550 displays the number of connected electronic delay primer devices 100 input through the input unit 520 and the line resistance values of the power cable 200 on the display unit 530, and also inputs the electronic delay primer. The primer power supply 560 is controlled to adjust the output voltage of the power to be supplied to the electronic delay primer device 100 based on the number of devices 100 connected and the line resistance of the power cable 200. In addition, when the blasting command is input through the input unit 520, the voltage controller 550 operates the blasting switching unit 570.

The primer power supply 560 adjusts the voltage 30V output from the battery unit 510 to the output voltage of the power to be supplied to the electronic delay primer device 100 under the control of the voltage controller 550.

The blast switching unit 570 is provided between the primer power supply unit 560 and the connector 580. When the voltage controller 550 receives the blasting command through the input unit 530, the voltage controller 550 operates the blasting switching unit 570, so that the voltage adjusted by the primer voltage supply unit 560 is connected to the connector 580. It is supplied to a plurality of electronic delay primer device (100-1, 100-2, 100-n) through.

Meanwhile, as shown in FIG. 3, when the electronic delay primer device 100 includes the BPF 120, a frequency switching unit for switching to a power source having a frequency of several tens of KHz in addition to the above-described configuration shown in FIG. Shown) may be provided between the blasting switching unit 570 and the connector 580.

6 is a view illustrating in detail the blasting apparatus shown in FIG.

As shown in FIG. 6, the input unit 530 includes a blasting switch SW1 534, a number setting switch SW2 536, a resistance value setting switch SW3 538, and an encoder switch 532.

Blasting switch SW1 534 is a switch for supplying power to the plurality of electronic delay primer device (100-1, 100-2, 100-n) for the blasting of explosives, the number setting switch SW2 (534) A switch for setting the number of the electronic delay primer device (100-1, 100-2, 100-n), the resistance value setting switch SW3 (538) is a switch for setting the line resistance value according to the length of the power cable. .

The encoder switch 532 is for the user to set the line resistance of the power cable 200 and the number connected to the electronic delay primer device 100, the number setting switch SW2 (536) is turned on, the electronic delay primer device The number connected to 100 may be set, the resistance value setting switch SW3 538 is turned on, and the line resistance value of the power cable 200 may be set.

Primer power supply 560 includes switching element 562, capacitor C11 564, resistor R11 566, and resistor R12 568. The switching element 562 is turned on / off according to the driving signal of the voltage controller 550, and energy is charged in the capacitor C11 564 while the switching element 562 is on, thereby increasing the voltage. When the voltage of the capacitor C11 564 rises, the voltage divided by the resistor R11 566 and the resistor R12 568 is provided to the voltage controller 540. The voltage controller 540 turns off the switching element 562 when the voltage of the capacitor C11 564 reaches the target voltage.

The blasting switching unit 570 includes a switching element 572 and a discharge resistor (R13). When the user presses the blasting switch SW1 532, the voltage controller 540 outputs a driving signal for turning on the switching element 572. When the switching element 572 is turned on, the plurality of electronic delay primer devices 100-1 through the power cable 200 connected to the connector 580 by the energy charged in the capacitor C11 562 of the primer voltage supply unit 560 is connected. 100-2, 100-n).

Hereinafter, the operation of the electronic primer blasting system will be described using a block diagram of the electronic primer blasting system of FIG. 4, a block diagram of the blasting apparatus of FIG. 5, and a detailed view of the blasting apparatus of FIG. 6.

In the case of blasting a rock, an operator connects a plurality of electronic delay primer devices 100-1, 100-2, and 100-n as shown in FIG. 4. Then, a resistor (not shown) is measured to determine whether the number of electronic delay primer devices 100-1, 100-2, and 100-n are properly connected by the number. When the resistance value is measured at the input of the power cable to be connected to the connector 580, the resistance value is measured in consideration of the line resistance value. If the measured resistance value is within the range of the threshold value, it is determined that the connection of the plurality of electronic delay primer devices 100-1, 100-2, 100-n is normal.

The user connects the power cable 200 to the connector 580, turns on the number setting switch SW2 536 and the plurality of electronic delay primer devices 100-1, 100-2, 100 through the encoder switch 538. -n) is set, and the resistance value setting switch SW3 538 is turned on and the line resistance value of the power cable 200 is set through the encoder switch 538.

The voltage control unit 540 uses the capacitor C11 of the primer voltage supply unit 560 based on the number of these electronic delay primer devices 100-1, 100-2, 100-n and the line resistance of the power cable 200. The voltage value to be charged at 564 is determined. That is, when the voltage to be supplied to the electronic delay primer device 100 is 24V in consideration of the voltage drop by the line resistance value and the voltage drop by the electronic delay primer device 100, the voltage control unit 540 is the primer voltage supply unit 560 The switching element 562) is driven to adjust the charging voltage of the capacitor C11 564 to 27V, for example.

After the charging voltage of the capacitor C11 564 reaches the target value, when the user presses the blasting switch SW1 532, the voltage controller 540 outputs a drive signal for turning on the switching element 572. When the switching element 572 is turned on, the plurality of electronic delay primer devices 100-1 through the power cable 200 connected to the connector 580 by the energy charged in the capacitor C11 562 of the primer voltage supply unit 560 is connected. 100-2, 100-n). Accordingly, the electronic delay primer devices 100-1, 100-2, and 100-n ignite the ignition element 190 after being delayed by a predetermined time stored in the storage unit 260 of the microcomputer IC1 151.

The protection scope of the present invention should be interpreted by the following claims. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It should be interpreted that it is included in the scope of right.

The present invention can be applied to an electronic delay primer device and an electronic primer blasting system for blasting a rock, and in particular, by inspecting the connection of the ignition element before the blasting can prevent the misfire can induce an accurate explosion.

100: electronic delay primer device
120: band pass filter
130: rectifier
140: energy charging unit
150: time control unit
160: ignition switching element
170: ignition output terminal
180, 182: test resistance
190: ignition element
200: power cable
300: blasting device

Claims (10)

An electronic delay primer device for igniting an ignition element,
An ignition output terminal to which the ignition element is connected;
A power input terminal for receiving power supplied from an external device;
An energy charging unit for charging energy from power supplied to the power input terminal;
A time controller for delaying a predetermined time and outputting a trigger signal after the energy charged in the energy charging unit reaches a predetermined voltage value;
An ignition switching element for supplying energy charged in the energy charging unit to the ignition element in response to the trigger signal;
And two resistors respectively connecting the lines of the power input terminal and the lines of the ignition output terminal. The method of claim 1,
The time controller includes a programmable microcomputer and a voltage distribution circuit for distributing energy charged in the energy charging unit to a power terminal of the microcomputer to provide a constant voltage. The method of claim 2,
A first capacitor is connected between an internal ground line and a power supply terminal of the microcomputer, and a second capacitor and a resistor are connected between the positive electrode line of the energy charging unit and the power supply terminal of the microcomputer. 4. The method according to any one of claims 1 to 3,
The power supplied from the external device is a power having a predetermined frequency,
And a band pass filter for passing a power having the predetermined frequency between the power input terminal and the energy charging unit. 4. The method according to any one of claims 1 to 3,
The electronic delay primer device further comprises a rectifier for rectifying the power supplied from the external device. A blasting primer system having an electronic delay primer device for igniting an ignition element and a blasting device for supplying power to the electronic delay primer device through a power cable,
The electronic delay primer device charges energy from an ignition output terminal connecting the ignition element, a power input terminal for receiving power supplied from the blasting apparatus through the power cable, and a power supplied to the power input terminal. An energy charging unit configured to delay a predetermined time and output a trigger signal after the energy charged in the energy charging unit reaches a predetermined voltage value, and the energy charged in the energy charging unit in response to the trigger signal. An ignition switching element for supplying the ignition element to the ignition element, and two resistors respectively connecting the lines of the power input terminal and the ignition output terminals,
The blasting apparatus adjusts an output voltage of power to be supplied to the electronic delay primer device based on the number of the primer power supply unit supplying power to the electronic delay primer device through the power cable and the electronic delay primer device. Electronic primer blasting system comprising a voltage control unit for controlling the primer power supply. The method of claim 6,
And the voltage control unit controls the primer power supply unit to adjust an output voltage of power to be supplied to the electronic delay primer device in consideration of the line resistance value of the power cable. The method according to claim 6 or 7,
The blasting apparatus further comprises a connector for connecting the power cable, and a blasting switching unit driven by the operation of the blasting switch between the voltage control unit and the connector. The method of claim 8,
The blasting apparatus further comprises an input unit for setting the number of the electronic delay primer device is connected and the line resistance value of the power cable. The method of claim 8,
The time controller includes a programmable microcomputer and a voltage distribution circuit for distributing and supplying the energy charged in the energy charging unit to the power terminal of the microcomputer.

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