CN111750747A

CN111750747A - Digital electronic detonator based on solid-state aluminum capacitor

Info

Publication number: CN111750747A
Application number: CN202010571325.0A
Authority: CN
Inventors: 赵先锋; 李超飞; 张展; 蔡海啸; 张永刚
Original assignee: Wuxi Shengjing Electronic Technology Co ltd
Current assignee: Wuxi Shengjing Electronic Technology Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2020-10-09

Abstract

The invention discloses a digital electronic detonator based on a solid aluminum capacitor, which mainly comprises a tube shell, a leg wire, a bayonet plug, an electronic control module, an ignition element and a basic detonator, wherein an energy storage capacitor on the electronic control module adopts the solid aluminum capacitor, so that the problems of high cost, limited raw materials, low withstand voltage and low capacity of a tantalum capacitor are solved.

Description

Digital electronic detonator based on solid-state aluminum capacitor

Technical Field

The invention belongs to the technical field of electronic detonators, and particularly relates to a digital electronic detonator taking a solid aluminum capacitor as an energy storage element.

Background

With the development of engineering blasting technology, the requirement of blasting engineering is higher and higher, and the electronic detonator is more and more commonly applied in the blasting process. The electronic detonator has the following advantages: firstly, a microelectronic delay module is adopted to replace a traditional delay body, the module utilizes a crystal oscillator and a counter to carry out delay, and the delay precision and the delay time are far more accurate than those of the traditional detonator, so that the module is particularly suitable for a working surface requiring high precision; secondly, a simple and advanced detonation network can be conveniently formed, the detonation sequence and the delay time can be set on site, and can also be preset according to the requirements of customers when leaving a factory; thirdly, the application scope is wide, and the security is strong, can resist stray current, electromagnetic radiation, can use under water, in the environment that has gas or mine dust explosion danger, and adopt special electron initiating device to explode, can also set up the password to can effectively prevent that the detonator from being used illegally.

Most of existing electronic detonators use tantalum capacitors as energy storage elements, the price is high, the voltage resistance and the capacity are low, the use conditions cannot be met due to insufficient energy on the matched rigid explosive head, in addition, the existing tantalum capacitors mainly depend on import as the goods source, and once disputes occur, the purchasing channel is limited. The aluminum electrolytic capacitor has stable impedance in a wide temperature range, can still normally work in a high-temperature environment, keeps various electrical properties, and can greatly reduce ESR and improve the temperature frequency characteristic.

Disclosure of Invention

The invention aims to provide a digital electronic detonator based on a solid aluminum capacitor aiming at the problems of the existing tantalum capacitor, and can solve the problems of high cost, limited raw materials, low pressure resistance and low capacity of the tantalum capacitor. The invention provides a digital electronic detonator based on a solid-state aluminum capacitor, which mainly comprises a tube shell, a leg wire, a bayonet plug, an electronic control module, an ignition element and a basic detonator, wherein the leg wire is led out through the bayonet plug, one end of the leg wire is connected with two ports at the front end of the electronic control module, the led-out part is connected with an external detonation controller, one end of the ignition element is connected with two ports at the rear end of the electronic control module, and the other end of the ignition element is connected with the basic detonator.

Furthermore, the pipe shell is made of steel-aluminum alloy, has certain mechanical strength, protects the initiating explosive from being directly affected by external energy, and provides good sealing conditions for the initiating explosive.

Further, the bayonet plug is a rubber plug and is used for sealing the pipe shell and fixing the leg wire.

Furthermore, the ignition element comprises a patch bridge wire and a primer, and after the detonator is electrified, the temperature of the bridge wire rises to ignite the primer.

Further, the basic detonator is formed by assembling high explosive and initiating explosive, is placed at the bottom of the pipe shell, and is ignited by the flame of the initiating explosive head so as to initiate the detonator.

Furthermore, the electronic control module mainly comprises an energy storage capacitor C1, a PCB, a transient suppression diode D1, current limiting resistors R1 and R2, a half-wave rectifier diode D2, protection resistors R3, R4, R5 and R6, a special ASIC chip U1, a pin wire leading-out end and an ignition element leading-out end, and the electronic control module corresponds to an initiator matched with the electronic control module.

Furthermore, the energy storage capacitor C1 is a solid aluminum capacitor, is processed into an injection molding terminal by adopting an injection molding and encapsulation process, and is welded on an electronic control module PCB board through a capacitor assembly pin, so that the problem of module eccentricity caused by overlarge volume of the solid aluminum capacitor is solved.

Further, the encapsulation material is made of high-temperature resistant resin material, and can be one of ABS, PEEK, LCP and PPS, and LCP is preferable.

Furthermore, the transient suppression diode D1 is connected in parallel to two ends of the pin line, and when the voltage across the pin line is smaller than a specific value, the transient suppression diode appears as a large resistance, and when the voltage across the pin line is larger than the specific value, the transient suppression diode is broken down, which is equivalent to a wire connected to two ends of the pin line, and energy is discharged through the transient suppression diode. Compared with the traditional electrostatic protection scheme of point discharge, the method can not generate electric sparks due to air breakdown, so that the detonator can not be mistakenly exploded due to the electric sparks.

Further, the anode of the half-wave rectifier diode D2 is connected to the pin wire through the current limiting resistors R1 and R2, and the cathode is connected to the energy storage capacitor, so that the whole electronic module is powered and the energy is provided for final detonation.

Furthermore, the ASIC chip U1 mainly includes a signal receiving module, a data transmitting module, a command decoding module, an EEPROM memory, a delay counter, a clock circuit, and an output driving module, each chip has a unique ID, and each chip is unchangeable, cannot be lost when power is lost, realizes timing detonation control in a networking manner, has a delay range of 0 to 60000mS, can be programmed on line, performs uplink code-sending current loop modulation, demodulates downlink code-receiving full-amplitude voltage, has high interference resistance, and realizes control of detonator detonation by chip ID, command sequence, detonation code, and the like.

The invention has the advantages of

The invention adopts the solid aluminum capacitor as the energy storage element, solves the problems of limited raw materials, pressure resistance and low capacity of the existing tantalum capacitor, simultaneously provides a welding mode of the solid aluminum capacitor, and solves the problem of module eccentricity caused by overlarge volume of the aluminum capacitor; the electronic control module adopts a transient suppression diode, so that the condition that the electric spark is generated by point discharge to cause the false explosion of the detonator is avoided; the special ASIC chip can conveniently form a simple and advanced detonating network, can set the detonating sequence and the delay interval on site, has higher stability and reliability compared with the traditional discrete device,

drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic structural diagram of a digital electronic detonator based on a solid aluminum capacitor;

FIG. 2 is a schematic structural diagram of the front side of a detonator delay control module;

fig. 3 is a schematic structural diagram of the reverse side of the detonator delay control module.

Detailed Description

For the purpose of making the present invention more apparent, the following detailed description of the embodiments of the present invention is provided by way of specific examples and with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.

Example 1

The embodiment provides a digital electronic detonator based on a solid-state aluminum capacitor, which mainly comprises a tube shell 1, a leg wire 7, a bayonet plug 6, an electronic control module 4, an ignition element 3 and a basic detonator 6, wherein the leg wire 7 is led out through the bayonet plug 6, one end of the leg wire is connected with two ports at the front end of the electronic control module 4, the led-out part of the leg wire is connected with an external initiation controller, one end of the ignition element 3 is connected with two ports at the rear end of the electronic control module 4, and the other end of the leg wire is connected with the basic detonator 6.

As shown in fig. 2 and fig. 3, the electronic control module mainly includes an energy storage capacitor C1, a PCB, a transient suppression diode D1, current limiting resistors R1 and R2, a half-wave rectifier diode D2, protection resistors R3, R4, R5 and R6, a special ASIC chip U1, a pin terminal 11, a firing element terminal 12, and the electronic control module 4 corresponds to an initiator matched with the electronic control module.

The energy storage capacitor C1 is a solid aluminum capacitor, is processed into an injection molding terminal 5 by adopting an injection molding and encapsulation process, and is welded on a PCB (printed circuit board) of the electronic control module through a capacitor assembly pin, so that the problem of module eccentricity caused by overlarge volume of the solid aluminum capacitor is solved; the encapsulation material is LCP high-temperature resistant resin; the transient suppression diode D1 is connected in parallel to two ends of the leg wire 7, when the voltage at two ends of the leg wire 7 is smaller than a specific value, the transient suppression diode D1 is represented as a large resistor, and when the voltage at two ends of the leg wire 7 is larger than the specific value, the transient suppression diode D1 is broken down, which means that one conducting wire is connected to two ends of the leg wire 7, and energy is discharged through the transient suppression diode D1. Compared with the traditional electrostatic protection scheme of point discharge, the method can not generate electric sparks due to air breakdown, so that the detonator can not be mistakenly exploded due to the electric sparks; the anode of the half-wave rectifier diode D2 is connected to a pin wire through current-limiting resistors R1 and R2, and the cathode of the half-wave rectifier diode D2 is connected to an energy storage capacitor and is used for supplying power to the whole electronic module and supplying energy for final detonation; the ASIC chip U1 mainly comprises a signal receiving module, a data sending module, a command decoding module, an EEPROM memory, a delay counter, a clock circuit and an output driving module, wherein each chip has a unique ID, cannot be changed, cannot be lost when power is down, realizes timing detonation control in a networking mode, has a delay range of 0-60000mS, can be subjected to online programming, uplink code sending current loop modulation, downlink code receiving full-amplitude voltage demodulation and strong anti-interference capability, and realizes control on detonation of a detonator through a chip ID, a command sequence, a detonation password and the like.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present application.

Claims

1. A digital electronic detonator based on a solid-state aluminum capacitor mainly comprises a tube shell, a leg wire, a bayonet plug, an electronic control module, an ignition element and a basic detonator, and is characterized in that the electronic control module mainly comprises an energy storage capacitor C1, a PCB (printed Circuit Board), a transient suppression diode D1, current limiting resistors R1 and R2, a half-wave rectifier diode D2, protective resistors R3, R4, R5 and R6, a special ASIC (application specific Integrated Circuit) chip U1, a leg wire leading-out end and an ignition element leading-out end, wherein the energy storage capacitor C1 is a solid-state aluminum capacitor.

2. The digital electronic detonator based on the solid-state aluminum capacitor as claimed in claim 1, wherein the leg wire is led out through a bayonet plug, one end of the lead-out is connected with an external detonation controller, the other end of the lead-out is connected with two ports at the front end of the electronic control module, one end of the ignition element is connected with two ports at the rear end of the electronic control module, and the other end of the ignition element is connected with the basic detonator.

3. The digital electronic detonator based on the solid-state aluminum capacitor as claimed in claim 1, wherein the solid-state aluminum capacitor is processed into an injection molding terminal by adopting an injection molding encapsulation process, and the injection molding terminal is welded on the PCB of the electronic control module through a capacitor assembly pin.

4. The digital electronic detonator based on the solid-state aluminum capacitor as claimed in claim 1, wherein the transient suppression diode D1 is connected in parallel with two ends of the leg wire, when the voltage of the two ends of the leg wire is smaller than a specific value, the transient suppression diode is represented as a large resistance, when the voltage of the two ends of the leg wire is larger than the specific value, the transient suppression diode is broken down, which is equivalent to a wire connected with two ends of the leg wire, and energy is discharged through the transient suppression diode.

5. The digital electronic detonator based on the solid-state aluminum capacitor as claimed in claim 1, wherein the anode of the half-wave rectifier diode D2 is connected with the pin wire through the current limiting resistors R1 and R2, and the cathode is connected with the energy storage capacitor C1.

6. The digital electronic detonator based on the solid-state aluminum capacitor as claimed in claim 1, wherein the special ASIC chip U1 mainly comprises a signal receiving module, a data transmitting module, an instruction decoding module, an EEPROM memory, a delay counter, a clock circuit and an output driving module.