Miniature integral leg-wire-free electronic detonator and detonating method

Abstract

The invention relates to a miniature integral leg-wire-free electronic detonator and a detonating method. The electronic detonator comprises a micro power supply, a physical blocking module, a signal receiving and processing assembly, a delay detonating assembly and a detonator medicament. Through the safety design of the insulating material and the mechanical switch and the safety circuit with stable transmission signals, the micro power supply is arranged in the detonator shell, electric energy, the insulating material and the mechanical switch can be provided for working of other modules, the power supply can be kept disconnected from the circuit, the energy consumption of the power supply is reduced, and the safety and reliability of the detonator are ensured. Wireless control over the detonator can be achieved through the antenna and the signal processing module, whether the main function module of the electronic detonator is connected into a circuit or not is controlled through the semiconductor switch, the working voltage of a follow-up circuit is improved through the boosting module, and the voltage needed by detonating the detonator is achieved; an electronic chip is used for setting delay time and controlling charging and discharging of a detonating capacitor, and therefore the purpose of remotely, safely and reliably controlling detonating of the detonator is finally achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic detonators, and in particular relates to a miniature integral foot-free electronic detonator and a detonation method. Background Art

[0002] With the development of the times, electronic detonators have greatly improved in delay accuracy and detonation reliability compared with traditional electric detonators. However, the promotion of intelligent and unmanned electronic detonators during use is slow. This is mainly because traditional electronic detonators need to use wires to realize signal transmission and energy transfer, and in the actual blasting network connection process, a lot of manpower is required for careful connection, and the process is cumbersome and prone to errors.

[0003] Therefore, under the premise of ensuring the safety of electronic detonators during production, transportation, and use, in order to further improve the reliability, convenience, and intelligence level of electronic detonators in the process of underground blasting, and finally realize unmanned blasting, the wirelessization of electronic detonators is the current development trend. However, how to realize the wirelessization of electronic detonators is an important difficulty. In related technologies, wirelessization is generally achieved by designing separate electronic detonators. This type of electronic detonator separates the wireless module (including power module, signal receiving, processing module, etc.) from the detonating module. When the detonator is used, the wireless module must be accurately docked with the detonating module before it can be used. Although this technology realizes the wirelessization of the detonator, the detonator is large in size, and the wireless module and the detonating module need to be accurately docked before use. The use process is relatively cumbersome and the reliability of module docking cannot be guaranteed. It is urgent to develop a miniature integral footless electronic detonator. Summary of the invention

[0004] In order to overcome the problems existing in the prior art, the present invention provides a miniature integral foot-free electronic detonator and a detonation method.

[0005] A miniature integrated footless electronic detonator, comprising: a micro power source, a physical barrier module, a signal receiving and processing component, a delayed detonation component and a detonator agent,

[0006] The micro power source is used to provide power supply to the physical barrier module, the signal receiving and processing component, and the delayed detonation component;

[0007] The physical isolation module is disposed between the micro power source and the signal receiving and processing component, and is used to physically separate the micro power source from the remaining modules;

[0008] The signal receiving and processing component is arranged between the physical isolation module and the delayed detonation component, and is used to issue an instruction to control the delayed detonation component according to the received signal;

[0009] The delayed detonation component is located between the signal receiving and processing component and the detonator agent, and is used to detonate the detonator agent.

[0010] According to the aspects described above and any possible implementation method, an implementation method is further provided, which also includes a tube shell, a shell cover and a seam, wherein the micro power source, physical barrier module, signal receiving and processing component, delayed detonation component and agent are all integrated in the tube shell, the shell cover is arranged at the top end of the tube shell, and the seam is arranged at the upper part of the tube shell.

[0011] According to the aspects described above and any possible implementation, an implementation is further provided, wherein the physical isolation module includes an insulating material and a mechanical switch, the insulating material is removed through the seam, and the mechanical switch connects the insulating material and the signal receiving and processing component.

[0012] According to the above aspects and any possible implementation, there is further provided an implementation, wherein the tube shell is a cylinder with a bottom diameter of 6-15 mm and a height of 72-90 mm or 185 mm.

[0013] According to the above aspects and any possible implementation, an implementation is further provided, wherein the insulating material is a rectangular body of a polyimide PI film with a thickness of 1 mm, a width of 4 mm, and a length of 7 mm.

[0014] According to the aspects described above and any possible implementation method, an implementation method is further provided, wherein the signal receiving and processing component includes an antenna, a signal processing module and a signal transceiver module, the antenna is connected to the signal transceiver module, and the signal transceiver module is connected to the signal processing module.

[0015] According to the aspects described above and any possible implementation method, an implementation method is further provided, wherein the delayed detonation assembly includes a boost module and an electronic chip delayed detonation module connected to each other, the boost module is connected to the signal processing module via a semiconductor switch, and the electronic chip delayed detonation module is connected to the detonator agent via a ignition head.

[0016] According to the above aspects and any possible implementation, there is further provided an implementation, wherein the micro power source is a button lithium battery with a certain voltage.

[0017] According to the aspects described above and any possible implementation method, an implementation method is further provided, wherein the voltage is related to the density of the ignition agent of the ignition head, the reaction heat, the resistance specifications of the bridge wire in the boost module, the power-on heating time, the resistivity and the current intensity.

[0018] The present invention also provides a method for detonating a miniature integral footless electronic detonator, which is implemented by using the electronic detonator, and comprises the steps of: S1. transporting the footless electronic detonator to a designated blasting site;

[0019] S2. Install the micro power source into the shell through the shell cover on the upper part of the detonator shell;

[0020] S3. Remove the insulating material of the physical isolation module at the tail of the micro power source through the seam and turn on the mechanical switch of the physical isolation module;

[0021] S4. The antenna, signal transceiver module, and signal processing module of the signal receiving and processing component start working. After establishing a connection with the external dedicated detonator according to the signal sent by the antenna, the detonator parameters are entered into the dedicated detonator and the detonator can be placed in the drilled blasthole;

[0022] S5. After the signal transceiver module and the antenna receive the external instruction to start the delay setting, the signal processing module closes the semiconductor switch. At this time, the boost module and the electronic chip delay detonation module are connected to the circuit, and the electronic detonator is activated;

[0023] S6. The electronic chip delay detonation module performs different delay time settings according to different circuit signals transmitted by the signal processing module, and completes different delay time settings;

[0024] S7. After reaching the set delay time and receiving the detonation command, the electronic chip delayed detonation module is connected to the ignition head to detonate the ignition head and the detonator agent, and the detonator is detonated.

[0025] Beneficial effects of the present invention

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The integrated footless electronic detonator provided by the present invention has a safe design of insulating materials and mechanical switches and a safe circuit with stable transmission signals, and a micro power supply is set inside the detonator shell to provide power for the operation of other modules. The insulating materials and mechanical switches can achieve the power supply being disconnected from the circuit, reduce power consumption, and ensure the safety and reliability of the detonator itself. Wireless control of the detonator can be achieved by using an antenna and a signal processing module, and the main functional module of the electronic detonator is controlled by a semiconductor switch to control whether the circuit is connected, and the subsequent circuit working voltage is increased by a boost module to achieve the voltage required for detonating the detonator. An electronic chip is used to set the delay time and control the charging and discharging of the detonating capacitor, thereby ultimately achieving the purpose of remote safe and reliable control of detonator detonation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1An example diagram of the overall design of a novel integrated footless electronic detonator provided in an embodiment of the present invention;

[0029] Figure 2 A top view of an overall design example of a novel integrated foot-free electronic detonator provided by an embodiment of the present invention;

[0030] Figure 3 A front view of an overall design example of a novel integrated foot-free electronic detonator provided by an embodiment of the present invention;

[0031] Figure 4 A left view of an overall design example of a novel integral foot-free electronic detonator provided by an embodiment of the present invention;

[0032] Figure 5 A cross-sectional view of an overall design example of a novel integral foot-free electronic detonator provided in an embodiment of the present invention;

[0033] Figure 6 A voltage boosting circuit diagram of a novel integrated footless electronic detonator provided by an embodiment of the present invention;

[0034] Figure 7 An example diagram of a novel integrated footless electronic detonator mechanical switch provided by an embodiment of the present invention;

[0035] Figure 8 An example diagram of the overall design circuit of a novel integrated footless electronic detonator provided by an embodiment of the present invention;

[0036] Fig. 9 An example diagram of the design workflow of a novel integrated footless electronic detonator provided in an embodiment of the present invention;

[0037] Fig.10 This is a schematic diagram of the electronic chip delayed detonation module of the present invention;

[0038] Fig.11 This is a diagram showing the positional relationship between the bridge wire and the drug of the present invention. DETAILED DESCRIPTION

[0039] In order to better understand the technical solution of the present invention, the content of the present invention includes but is not limited to the specific implementation methods described below, and similar technologies and methods should be considered to be within the scope of protection of the present invention. In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0040] It should be clear that the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0042] The present invention provides a miniature integrated footless electronic detonator, comprising: a micro power source, a physical barrier module, a signal receiving and processing component, a delayed detonation component and a detonator agent.

[0043] The micro power source is used to provide power supply to the physical barrier module, the signal receiving and processing component, and the delayed detonation component;

[0044] The physical isolation module is disposed between the micro power source and the signal receiving and processing component, and is used to physically separate the micro power source from the remaining modules;

[0045] The signal receiving and processing component is arranged between the physical isolation module and the delayed detonation component, and is used to issue an instruction to control the delayed detonation component according to the received signal;

[0046] The delayed detonation component is located between the signal receiving and processing component and the detonator agent, and is used to detonate the detonator agent.

[0047] Preferably, it also includes a tube shell, a shell cover and a seam, the micro power source, physical barrier module, signal receiving and processing component, delayed detonation component and agent are all integrated in the tube shell, the shell cover is arranged at the top end of the tube shell, and the seam is arranged at the upper part of the tube shell.

[0048] Preferably, the physical isolation module comprises an insulating material and a mechanical switch, the insulating material is removed through the seam, and the mechanical switch connects the insulating material and the signal receiving and processing component.

[0049] Preferably, the tube shell is a cylinder with a bottom diameter of 6-15 mm and a height of 72-90 mm or 185 mm.

[0050] Preferably, the insulating material is a rectangular polyimide PI film with a thickness of 1 mm, a width of 4 mm and a length of 7 mm.

[0051] Preferably, the signal receiving and processing component comprises an antenna, a signal processing module and a signal transceiver module, the antenna is connected to the signal transceiver module, and the signal transceiver module is connected to the signal processing module.

[0052] Preferably, the delayed detonation assembly comprises a boost module and an electronic chip delayed detonation module connected to each other, the boost module is connected to the signal processing module via a semiconductor switch, and the electronic chip delayed detonation module is connected to the detonator agent via a ignition head.

[0053] Specifically, Figure 1 The example 100 of the overall design of the novel integrated footless electronic detonator provided by the present invention is shown in FIG. Figure 2 , Figure 3 , Figure 4 They are respectively the top view, front view and left view of the overall design of the present invention. The overall characteristic structure of the electronic detonator includes a cylindrical tube shell 105, and the characteristic dimensions are 6-15mm in diameter, preferably 6.2mm or 12.4mm in diameter, and 72-90mm or 185mm in length. The top of the tube shell 105 is provided with a shell cover 101, and the upper part of the tube shell 105 is provided with a tube shell joint 103. The detonator material is preferably designed to be a hard PVC material that has a poor shielding effect on low-frequency RF signals and can improve the reliability of detonation. The hard PVC material has high strength and output, is not easy to break, and is low in price. At the same time, polyvinyl chloride has high flame retardancy, electrical insulation, and chemical resistance, which can better ensure the reliability and safety of detonator detonation. Under the premise of ensuring stable signal transmission, the detonator shell material can also be made of copper, aluminum, iron, PC and other materials.

[0054] After the electronic detonator is transported to the designated blasting site, the micro power supply group 201 can be installed through the shell cover during manual operation, and the insulating material 102 can be withdrawn in advance through the joint 103 and the mechanical switch 104 can be opened.

[0055] like Figure 5 The figure shows a cross section 200 of an overall design example of an integrated footless electronic detonator provided by the present invention. The electronic detonator of the present invention comprises: a micro power supply group 201, an insulating material 202, a mechanical switch 203 (104), an antenna 204, a signal processing module 205, a semiconductor switch 206, a boost module 207, an electronic chip delayed detonation module 208, an ignition head 209, a circuit composed of a detonator charge 210 and a detonator shell 211. The structural components 201-210 are all arranged inside the detonator shell 211 (105). The detonator charge 210 is a detonator agent used for detonation.

[0056] The micro power supply group 201 is arranged on the upper part of the detonator shell 211, and is used to provide continuous power to the subsequent antenna 204, the signal transceiver processing module 205, the boost module 207, and the electronic chip delayed detonation module 208 when the circuit is working. Preferably, the micro power supply can be a button lithium battery with a certain voltage, or a group of button lithium batteries as a micro power supply group 201 installed in the detonator.

[0057] Preferably, the voltage of the button lithium battery is related to the density of the ignition agent of the ignition head, the heat of reaction, the resistance specification of the bridge wire in the boost module, the heating time of power on, the resistivity and the current intensity. According to the relationship between the temperature and time required for the bridge wire in the boost module to the ignition point of the ignition agent, the voltage is determined and the size is designed.

[0058] like Fig.11 As shown, in order to more intuitively represent the heat transfer process between the bridge wire and the agent, the heat transfer process between the bridge wire and the agent is simplified to the bridge wire being inside the agent, the bridge wire resistor being in the shape of a long cylinder, and the axial midpoint of the bottom surface of the long cylinder of the bridge wire being selected as the origin. The axial direction where the radius r is located is the X-axis, the direction perpendicular to the X-axis is the Y-axis, and the center line of the bridge wire is used as the Z-axis, thereby establishing a cylindrical coordinate system, which is calculated using the three-dimensional heat conduction differential equation and the energy conservation model:

[0059]

[0060] Where ρ is the density of the reagent, in g·cm -3 ;

[0061] c—Specific heat capacity of the agent, unit J·kg -1 ·K -1 ;

[0062] T—agent temperature, unit K;

[0063] q v —Internal heat source, unit J·m -3 ·s -1 ;

[0064] λ—thermal conductivity, unit J·m -1 ·s -1 ·K -1 ;

[0065] t—ignition time, unit s;

[0066] r-the sum of the radius of the bridge wire and the agent, in m;

[0067] -The heat dissipation angle between the bridge wire and the agent, in degrees;

[0068] z- the length of the bridge wire resistor, in m.

[0069] The left side of the formula represents the heat of the bridge wire and the agent as a whole, and the right side q v It represents the internal heat source, which is composed of two parts: heating caused by bridge wire resistance and heating caused by agent ignition.

[0070] If the radius of the bridge wire is r0, then when r≥r0, that is, the r0-r region is the agent region, and the internal heat source is the explosive agent, which is used to generate heat by the physical and chemical reaction of the detonator charge. According to the model assumption, the heat generated by the physical and chemical reaction of the explosive agent obeys the zero-order Arrhenius law, that is:

[0071]

[0072] In the formula, q v1 -Heating rate of the explosive, in J·m -3 ·s -1 ;

[0073] ρ-drug density, unit: g·cm -3 ;

[0074] Q-reaction heat of the explosive agent, unit J·kg -3 ;

[0075] A—frequency factor, unit s -1 , a constant determined by the explosive reaction itself and unrelated to the reaction temperature and other substances;

[0076] E-activation energy, unit J·mol -1 , refers to the energy activation energy absorbed by the detonating agent in the reaction, which is a constant independent of temperature;

[0077] R—universal gas thermodynamic constant, 8.314 J·mol -1 ·K -1 .

[0078] T - the temperature of the explosive, in K;

[0079] For the heating of bridge wire resistance, a bridge wire with a length of Δz is selected as the research object, and the internal heat source equation of bridge wire heating is:

[0080]

[0081] In the formula, q v2 —Heating rate of bridge wire resistance, unit: J·m -3 ·s -1 ;

[0082] P—bridge wire resistance heating power, unit W;

[0083] Δz—the length of the bridge wire resistance, in m;

[0084] a—bridge wire resistance radius, unit: m;

[0085] σ—Bridge wire resistance resistivity, unit Ω·m -1 ;

[0086] I—Current intensity passing through the bridge wire resistance, unit A.

[0087] The initial temperature of the bridge wire and the ignition agent is room temperature T0 = 298K. The initial conditions for calculating the heat conduction equation are:

[0088] t=0,T(z,r,0)=T0(4)

[0089] The boundary condition is: at infinity, the outer surface of the detonator shell is in convective heat transfer equilibrium with the environment, that is,

[0090] t→∞, T=T0 (5)

[0091] At the same time, the contact surface between the bridge wire and the ignition agent is in an ideal state, that is, there is no influence of thermal resistance and heat capacity on the contact surface.

[0092] r=r0,T1=T2(6)

[0093] Substituting formulas (4), (5), and (6) into formula (3), that is, combining the above four formulas, we can get the bridge wire current under a longer ignition and explosion time. The bridge wire current under a longer ignition and explosion time is multiplied by the bridge wire resistance to get the basic voltage under ignition conditions. Taking into account the discharge stability, continuity, and safety as well as the system design of the entire detonator, the micro power source is preferably a button lithium battery with a voltage of 3V, a diameter of 6mm, and a height of less than 20mm. By calculating this voltage, the reliable ignition voltage for detonating the bridge wire can be achieved through the boost module.

[0094] The insulating material 202 is arranged between the micro power source group 201 and the mechanical switch 203, and is used to block the standby discharge of the micro power source group 201. As the first physical blocking part, according to the different operation forms of the insulating material, it blocks the power connection when it is not withdrawn, and reduces the energy consumption of the micro power source itself. Preferably, the insulating material is a polyimide (PI) film with good heat resistance, mechanical strength and dielectric properties. The polyimide (PI) film has outstanding heat resistance, insulation performance, chemical stability, corrosion resistance, hydrolysis resistance and a dielectric constant of less than 3.5, which can protect the detonator to the maximum extent when the detonator is not used, and reduce the power consumption. The shape of the insulating material is preferably a rectangular body with a thickness of 1mm, a width of 4mm and a length of 7mm, which can completely block the micro power source from the subsequent circuit connection, and the rectangular body film is not easy to slide out in the electronic detonator but is easy to take out, thereby improving the reliability of the blocking effect.

[0095] The two ends of the mechanical switch 203 are respectively connected to the micro power supply group 201 and the signal processing module 205, as the second physical barrier part. The mechanical switch 203 is used to control the on and off of the circuit, that is, after the insulating material 202 is withdrawn, the mechanical switch 203 does not provide power or provides power to the subsequent modules according to its on and off state. Preferably, the mechanical switch 203 is a toggle mechanical switch, which has the advantages of simple structure, good operability, high safety, strong reliability, etc.

[0096] The insulating material 202 and the mechanical switch 203 together constitute a physical isolation module, which is used to isolate the connection between the micro power supply group 201 and other modules, reduce the power consumption of the micro power supply group 201 when in standby mode, and improve the safety of the detonator itself. The insulating material 202 can be withdrawn through the joint 103 during the use of the electronic detonator, so that the micro power supply group 201 is connected to the mechanical switch 203. The mechanical switch 203 can be turned on and off manually according to the use requirements. When the insulating material 202 is withdrawn and the mechanical switch 203 is closed, the micro power supply group 201 is connected to the circuit for power supply.

[0097] The antenna 204 and the signal processing module 205 are connected in circuit. After the insulating material 202 is withdrawn, the mechanical switch 203 is closed and the circuit is turned on, and the antenna 204 works. The antenna 204 is used to realize the reception and transmission of different signals. The present invention adopts an antenna to realize wireless signal transmission, thereby replacing physical connection equipment such as wires, and realizing wireless detonation of electronic detonators, thereby reducing the occurrence of electronic detonator refusal to explode and blasting failure caused by uncertain factors such as damage caused by connections such as wires and connection errors. In order to ensure the stability of the electronic detonator transmitting signals in the blasthole, the type of signal received by the antenna is preferably low-frequency RF signals, etc. The low-frequency RF signal can pass through objects of any material without significantly reducing the reading distance, and solves the signal penetration, network delay and anti-interference problems of 2.4G wireless solutions such as Zigbee, Bluetooth, and WIFI.

[0098] The signal processing module 205 converts the working state of the circuit according to different signals. In order to ensure the stability of the signal transmitted by the detonator in the blast hole, when the signal processing module 205 receives the signal mainly of low-frequency RF received by the antenna, it controls the closing of the semiconductor switch 206 so that the subsequent modules are connected to the circuit and start working, otherwise, the subsequent electronic detonator function module is still in the disconnected state. Therefore, the signal processing module 205 realizes different working states of the circuit according to different signal instructions. It is connected to the circuit to work after the insulating material 202 and the mechanical switch 203 are withdrawn and opened. The signal receiving function is to receive external signals so that it can set the corresponding circuit state according to different signals. When receiving the delay signal of a specific frequency band, it controls the opening and closing of the semiconductor switch 206 so that the subsequent modules can be connected to the circuit to work. The signal transmitting function is to enable the outside world to capture its position and judge its own state parameters through the signal it transmits.

[0099] The semiconductor switch 206 is arranged between the signal processing module 205 and the boost module 207. The signal processing module 205 controls its on and off state. It is turned on after receiving a specified signal to supply power to the subsequent boost module 207. Otherwise, it remains in the off state. Under this design, it can effectively prevent the electronic detonator from being accidentally connected to the circuit and activated. Through this safety design, the safety and reliability of the electronic detonator itself during use are improved. The semiconductor switch can select transistors such as NMOS, PMOS, or other switch designs that isolate the signal processing module 205 from the boost module 207.

[0100] One end of the boost module 207 is connected to the semiconductor switch 206, and the other end is connected to the electronic chip delayed detonation module 208 and the agent ignition head 209. Figure 6 It is a boost circuit for an integral footless electronic detonator, which can convert low voltage input into high voltage output. Through this boost circuit, the voltage of 3V of the micro power source can be converted into a reliable ignition voltage for detonating the bridge wire. When the switch is turned on, the voltage of 3V of the micro power source acts on the capacitor part through the diode, and the capacitor stores energy, and acts on the inductor and the voltage regulator through the wire and the resistor. Then it acts on the inductor to store energy, and the current rises accordingly. When the switch is suddenly disconnected, the current in the inductor cannot be stopped immediately, so it continues to flow through the diode, and the stored energy is released to the output end through the fuse. At this time, due to the cooperation of the inductor and the output capacitor, the output voltage is higher than the input voltage. The output capacitor also plays a filtering role to ensure the smoothness and stability of the output voltage. This circuit design not only improves the energy conversion efficiency, but also reduces heat loss. Or the ignition head 209 can also be set independently of the electronic chip delayed detonation module 208.

[0101] The boost module 207 and the electronic chip delayed detonation module 208 are connected to the circuit after the semiconductor switch 206 is closed, and work after being connected to the micro power supply group 201 for power supply. Then the boost module 207 increases the circuit voltage to the minimum voltage value required for the electronic chip delayed detonation module 208 to work through the boost circuit. According to the judgment of the signal processing module 205 on the voltage value for completing different detonation operations, it is transmitted to the electronic chip delayed detonation module 208 through the circuit to set different millisecond delay times for completing the blasting. After the delay time is set, the detonation capacitor in the electronic chip delayed detonation module 208 is charged. The detonation controller sends a detonation command to the repeater, which is then transmitted to the antenna 204. The signal processing module 205 sends a command. After receiving the corresponding command, the electronic chip delay module 208 charges the detonation capacitor therein accordingly. The detonation capacitor and the ignition head 209 form a loop. The charged detonation capacitor will perform a short-term pulse discharge on the ignition head 209 to detonate the ignition head 209 and the detonator charge 210. If the electronic chip delay detonation module 208 receives a detonation termination command, the detonation capacitor is connected to the discharge loop to put the detonation capacitor in a low-power / no-power state to ensure its own safety.

[0102] The electronic chip delayed detonation module 208 works after the signal processing module 205 receives the correct signal and is connected to the overall working circuit. At this time, different delay times in the electronic delay circuit are set according to different circuit signal instructions.

[0103] The electronic chip delayed detonation module 208 includes an electronic delay module and a key part detonation capacitor, such as Fig.10 As shown, the electronic chip delayed detonation module 208 includes an electronic delay module, a diode, a switch, and a detonation capacitor, wherein the detonation capacitor discharge method is to use a short-term pulse discharge form to cause the explosion of the charge, and to charge the energy required for detonating the charge when the delay circuit is connected to prepare for detonation, and when a detonation signal is received, the detonation capacitor is connected to the ignition head for rapid discharge, and when a detonation termination signal is received, the capacitor charging is terminated, and the detonation capacitor is discharged through a discharge circuit to prevent danger caused by capacitor charging, thereby improving blasting safety and reliability.

[0104] like Figure 7The example of the mechanical switch 300 of the present invention is shown, which includes: a toggle switch 301, a filter 302, a silica gel 303, and a housing 304. The silica gel 303 seals the upper part of the mechanical switch 300, and the 10μm filter 302 is used at the lower part to isolate the water molecules that may come in from the upper part. The surface of the housing 304 is nano-coated. Since the pore size of the nano-coating surface is much smaller than the size of water molecules, it cannot penetrate naturally, thereby producing a hydrophobic and waterproof effect. The structural design and materials used of the filter 302, silica gel 303, and housing 304 enable the mechanical switch 300 to achieve a waterproof and dustproof effect.

[0105] like Figure 8 The figure shows another example of the overall design of the integrated footless electronic detonator 400 of the present invention, wherein the insulating material 402 and the mechanical switch 403 together constitute the physical barrier module described in this example, and the resistor 411 plays the role of regulating and stabilizing the current and voltage. The insulating material 402 is pulled out, the mechanical switch 403 is closed, and the micro power supply group 401 transmits the current through the resistor 411 to the signal transceiver module 405a and the signal transceiver module 405b, so as to realize the reception and transmission of different signals;

[0106] The antenna 404, the signal transceiver module 405a and the signal processing module 405b are connected to realize the signal transceiver and signal processing functions; the antenna 404 is connected to the signal transceiver module 405a for receiving the remote low-frequency RF signal; the signal processing module 405b is integrated with the signal transceiver module 405a for processing the low-frequency RF signal received by the signal transceiver module 405a and making a command feedback, so as to determine whether the switch 406 connects the boost module 407 to the circuit; the electronic delay module 408a is connected to the boost module 407 through the first switch 412, and the diode 408b is connected to the electronic delay module 408a through the second switch 412', so as to quickly charge the detonation capacitor 408c; when the signal transceiver module 405a receives the detonation signal command, the signal The electronic delay module 408a and the diode 408b communicate with each other, so that the signal processing module 405b issues an instruction, the second switch 412' between the electronic delay module 408a and the diode 408b is disconnected, and the current passes through the diode 408b to quickly charge the detonating capacitor 408c, and the detonating capacitor 408c and the inductive ignition head 409 form a loop, and the inductive ignition head converts the low voltage electricity into high voltage electricity through the ignition coil to generate sparks, ignite the mixed gas, and perform short-term pulse discharge to detonate the agent; the third switch 412" and the resistor 413 are connected to the detonating capacitor 408c through the circuit and then grounded, forming a discharge loop together. When the signal transceiver module 405a receives the detonation termination signal instruction, the signal processing module 405b issues an instruction, so that the first switch 412 is closed and the detonating capacitor 408c is discharged through the discharge loop.

[0107] As an embodiment disclosed by the present invention, the present invention also provides a detonation method, such as Fig. 9 The specific implementation steps of the workflow 500 are as follows:

[0108] First, step S1 starts the preparation work before use. When the footless electronic detonator provided by the present invention is transported to the designated blasting site, step S2 the blaster first installs the micro power pack through the shell cover 101 located on the upper part of the detonator shell, step S3 takes out the insulating material 402 located at the tail of the micro power pack 401 through the shell joint 103, and then step S4 turns on the mechanical switch 403; step S5 at this time the antenna 404 and the signal transceiver module 405a and the signal processing module 405b are connected to the circuit and start working, after establishing a connection with the external special detonator according to the signal sent by the antenna 404, the detonator parameters itself are entered into the special detonator and the detonator can be placed in the drilled blasthole; then, after receiving the external start delay setting instruction, the signal processing module 405a closes the semiconductor switch 406, at this time, the boost module Block 407 and the electronic chip delayed detonation module 408a are connected to the circuit, and the main function of the electronic detonator is activated. Step S6 sets different delay times according to different circuit signals transmitted by the signal processing module 405b. After completing the different delay time settings, step S7 of the electronic chip delayed detonation module 408a starts to charge the detonation capacitor 408c. Step S8, if a detonation instruction is received, the detonation capacitor 408c in the detonation module 408a is connected to the ignition head 409 for rapid discharge to detonate the ignition head 409 and the detonator charge 410. Step S9, the detonator is detonated normally. Step S8, if a detonation termination instruction is received, the detonation capacitor in the detonation module is connected to the preset discharge switch 412 and resistor 413 to exhaust the stored electricity in the detonation capacitor 408c. Finally, step S10, the detonator ends the blasting.

[0109] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not depart from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A miniature integral footless electronic detonator, characterized in that: include: Micro power source, physical barrier module, signal receiving and processing component, delayed detonation component and detonator agent, The micro power source is used to provide power supply to the physical barrier module, the signal receiving and processing component, and the delayed detonation component; The physical isolation module is disposed between the micro power source and the signal receiving and processing component, and is used to physically separate the micro power source from the remaining modules; The signal receiving and processing component is arranged between the physical isolation module and the delayed detonation component, and is used to issue an instruction to control the delayed detonation component according to the received signal; The delayed detonation component is located between the signal receiving and processing component and the detonator agent, and is used to detonate the detonator agent.

2. The miniature integral footless electronic detonator according to claim 1 is characterized in that: It also includes a tube shell, a shell cover and a seam. The micro power source, physical barrier module, signal receiving and processing component, delayed detonation component and reagent are all integrated in the tube shell. The shell cover is arranged at the top end of the tube shell, and the seam is arranged at the upper part of the tube shell.

3. The miniature integral footless electronic detonator according to claim 2 is characterized in that: The physical isolation module includes an insulating material and a mechanical switch, the insulating material is removed through the seam, and the mechanical switch connects the insulating material and the signal receiving and processing component.

4. The miniature integral footless electronic detonator according to claim 2 is characterized in that: The tube shell is a cylinder with a bottom diameter of 6-15 mm and a height of 72-90 mm or 185 mm.

5. The miniature integral footless electronic detonator according to claim 3 is characterized in that: The insulating material is a rectangular polyimide PI film with a thickness of 1 mm, a width of 4 mm and a length of 7 mm.

6. The miniature integral footless electronic detonator according to claim 1 is characterized in that: The signal receiving and processing component includes an antenna, a signal processing module and a signal transceiver module. The antenna is connected to the signal transceiver module, and the signal transceiver module is connected to the signal processing module.

7. The miniature integral footless electronic detonator according to claim 6 is characterized in that: The delayed detonation component includes a boost module and an electronic chip delayed detonation module connected to each other. The boost module is connected to the signal processing module through a semiconductor switch, and the electronic chip delayed detonation module is connected to the detonator agent through a ignition head.

8. The miniature integral footless electronic detonator according to claim 1 is characterized in that: The micro power source is a button lithium battery with a certain voltage.

9. The miniature integral footless electronic detonator according to claim 8, characterized in that: The voltage is related to the density of the ignition agent of the ignition head, the heat of reaction, the resistance specification of the bridge wire in the boost module, the power-on heating time, the resistivity and the current intensity.

10. A method for detonating a miniature integral footless electronic detonator, characterized in that: The method is implemented by using the electronic detonator according to any one of claims 1 to 9, and comprises the steps of: S1. transporting the footless electronic detonator to a designated blasting site; S2. Install the micro power source into the shell through the shell cover on the upper part of the detonator shell; S3. Remove the insulating material of the physical isolation module at the tail of the micro power source through the seam and turn on the mechanical switch of the physical isolation module; S4. The antenna, signal transceiver module, and signal processing module of the signal receiving and processing component start working. After establishing a connection with the external dedicated detonator according to the signal sent by the antenna, the detonator parameters are entered into the dedicated detonator and the detonator can be placed in the drilled blasthole; S5. After the signal transceiver module and the antenna receive the external instruction to start the delay setting, the signal processing module closes the semiconductor switch. At this time, the boost module and the electronic chip delay detonation module are connected to the circuit, and the electronic detonator is activated; S6. The electronic chip delay detonation module performs different delay time settings according to different circuit signals transmitted by the signal processing module, and completes different delay time settings; S7. After reaching the set delay time and receiving the detonation command, the electronic chip delayed detonation module is connected to the ignition head to detonate the ignition head and the detonator agent, and the detonator is detonated.

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