CN212158349U - Anti-interference structure of electronic detonator - Google Patents
Anti-interference structure of electronic detonator Download PDFInfo
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- CN212158349U CN212158349U CN202020701518.9U CN202020701518U CN212158349U CN 212158349 U CN212158349 U CN 212158349U CN 202020701518 U CN202020701518 U CN 202020701518U CN 212158349 U CN212158349 U CN 212158349U
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Abstract
The utility model provides an electron detonator anti-interference structure mainly relates to the circuit protection field of digital electron detonator. The utility model provides an anti-interference structure of electron detonator, includes quick binding clip and two connecting wire, two the connecting wire symmetry is fixed in quick binding clip, two connecting wire is connected with the interference suppression module in quick binding clip internal part between, the interference suppression module is common mode suppression circuit and/or differential mode suppression circuit. The beneficial effects of the utility model reside in that: the utility model discloses simple structure, low in cost, and prevent that static is effectual, can protect better to the electronic detonator.
Description
Technical Field
The utility model relates to a circuit protection field of digital electronic detonator specifically is an anti-interference structure of electronic detonator.
Background
With the continuous development of the electronic detonator technology, the electronic detonator is more and more widely applied. The electronic detonator comprises a detonator sealing plug, an electronic control module and a metal tube shell, and the detonator leg wire penetrates through the detonator sealing plug and is electrically connected with the electronic control module. However, because the detonator leg wire is electrically connected with the internal electronic control module, various interference signals such as shock waves and the like generated in the field blasting construction and the detonating process can act on the inside of the electronic detonator through the leg wire, so that the electronic control module can be damaged, the electronic detonator is caused to fail to explode, and in severe cases, the electronic detonator can be caused to explode mistakenly, and serious safety accidents are caused.
In the prior art, the internal circuit of the detonator is generally protected by anti-static electricity, but the anti-static structure used at present is usually complex in structure and difficult to popularize. Meanwhile, high-voltage interference signals generated by static electricity generally have high reaction speed and short duration, and can be rapidly discharged through point discharge or anti-static components, but the interference signals such as shock waves generated in the blasting process not only have the characteristics of high voltage, high reaction speed and the like, but also have long duration, and the requirements of a general anti-static structure are difficult to meet.
In the patent is CN 209166246U's antistatic electronic control module, it makes into the packaging body with main control chip and antistatic and high voltage's structure jointly, protect circuit inside through point discharge's mode, the space that components and parts occupy has been practiced thrift to this kind of mode, but the phenomenon of point discharge receives the influence of various environmental factors on the one hand, blasting site environment factor is complicated, can not accurately control electrostatic discharge's ability, core components and parts such as discharger and main control chip are located unified packaging body simultaneously, if produce the electric spark among the electrostatic discharge process, can detonate other core components and parts even, cause electronic control module to damage, thereby influence the security of electronic detonator.
SUMMERY OF THE UTILITY MODEL
For solving the not enough of prior art, the utility model provides an electron detonator anti jamming structure, its simple structure, low in cost, and prevent that static is effectual, can protect better to the electron detonator.
The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:
the utility model provides an anti-interference structure of electron detonator, includes quick binding clip, two connecting wire and interference suppression module, two the connecting wire symmetry is fixed in quick binding clip, forms electrical connection, two with a pair of for the wiring sheetmetal in the binding clip a pair of input of connecting wire and interference suppression module forms electrical connection.
The interference suppression module is a common mode suppression circuit and/or a differential mode suppression circuit.
The interference suppression module is a common mode suppression circuit and a differential mode suppression circuit, and the common mode suppression circuit and the differential mode suppression circuit are connected in parallel and then connected between the two connecting wires.
The differential mode suppression circuit is an anti-static tube and/or a voltage-stabilizing pair tube.
The differential mode suppression circuit comprises an anti-static tube and a voltage-stabilizing geminate transistor, wherein the anti-static tube and the voltage-stabilizing geminate transistor are connected in parallel and then connected between two connecting wires.
The common mode rejection circuit comprises a pair of capacitors and/or a pair of piezoresistors, the pair of capacitors and/or the pair of piezoresistors are connected in series and then connected between the two connecting wires, and the series connection points of the pair of capacitors and/or the pair of piezoresistors are grounded.
Contrast prior art, the beneficial effects of the utility model are that:
the utility model discloses a common mode suppression circuit and/or differential mode suppression circuit accomplish the electrostatic shielding of electronic detonator, wherein both connect in parallel the back together result of use best, also are the first-selected structure of our product. The common mode suppression circuit adopts an anti-static tube and a voltage-stabilizing geminate tube, the differential mode suppression circuit adopts a capacitor and a piezoresistor, electronic components of the differential mode suppression circuit are low in price, and the differential mode suppression circuit is simple in structure after combined use and can play a good anti-static effect, so that normal work of electrical components in the electronic detonator is guaranteed, and the electronic detonator is protected better.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of an interference suppression module according to embodiment 2 of the present invention;
FIG. 3 is a schematic diagram of the differential mode suppression circuit of the present invention;
fig. 4 is a schematic diagram of the common mode rejection circuit of the present invention.
Reference numerals shown in the drawings: 1. a quick jointing clamp; 2. connecting a lead; 3. and an interference suppression module.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.
As shown in fig. 1-4, an anti-interference structure of electronic detonator, including quick binding clip 1, two connecting wire 2 and interference suppression module 3, the wire casing has in the quick binding clip, the connecting wire joint is fixed in the wire casing, forms electrical connection with a pair of for the wiring sheetmetal in the binding clip. Two connecting wires 2 are symmetrically fixed in the quick jointing clamp 1, and the two connecting wires 2 are electrically connected with a pair of input ends of the interference suppression module 3.
The interference rejection module 3 is a common mode rejection circuit and/or a differential mode rejection circuit.
Example 1:
the interference suppression module 3 is a differential mode suppression circuit for single use. The differential mode suppression circuit comprises an anti-static tube and/or a voltage-stabilizing pair tube, the anti-static tube and the voltage-stabilizing pair tube can be used simultaneously or separately, and when the differential mode suppression circuit is used simultaneously, the anti-static tube and the voltage-stabilizing pair tube are connected in parallel and fixed on corresponding positions of the PCB in a surface mount technology (SMD) or welding mode. As the best solution of this embodiment, the anti-static tube and the voltage-stabilizing pair tube are connected in parallel and then connected between the two connecting wires 2. The anti-static tube has the advantage of high response speed (ns level), when the circuit works normally, the anti-static tube is in a cut-off state (high resistance state) and does not influence the normal work of a circuit, when the circuit is abnormally over-voltage and reaches the breakdown voltage of the circuit, the anti-static tube is rapidly changed from the high resistance state to the low resistance state, and a low-impedance conduction path is provided for instant current, so that the electronic control module is protected; when the abnormal overvoltage disappears, the circuit is restored to a high-resistance state, and the circuit works normally. The voltage-stabilizing geminate transistors have slower reaction compared with the anti-static transistors, the duration time of high voltage generated by shock waves and the like in the blasting network is longer, and the voltage-stabilizing geminate transistors can continue to play a role and stabilize the external voltage below the safe voltage, so that the safety of the circuit is protected. The structure that the anti-static tube and the voltage-stabilizing tube are connected in parallel can realize the treatment of high voltage under different duration, thereby ensuring the circuit safety as much as possible.
Example 2:
in this embodiment, compared to embodiment 1, the interference suppression module 3 is configured such that the differential mode suppression circuit and the common mode suppression circuit are connected in parallel and then connected between the two connection wires 2. The differential mode suppression circuit has the same structure as that in the embodiment 1, the common mode suppression circuit comprises a capacitor and a piezoresistor, the capacitor and the piezoresistor are connected in parallel and then connected between the two connecting wires 2, and the capacitor and the piezoresistor are both grounded. The capacitor is provided with two capacitors which are connected in series, the piezoresistors are provided with two piezoresistors which are connected in series. The capacitor has the function of preventing direct current from passing through alternating current signals, external interference signals are generally alternating current and can be led out through capacitor grounding, and signals of an internal circuit of the detonator cannot be influenced. The piezoresistor adopts a resistor with large resistance value, and can effectively discharge common-mode surge voltage generated on the bus by explosion to the ground.
Claims (6)
1. The utility model provides an anti-interference structure of electron detonator, includes quick binding clip (1), two connecting wire (2) and interference suppression module (3), its characterized in that: two connecting wires (2) are symmetrically fixed in the quick jointing clamp (1) and form electrical connection with a pair of metal sheets for wiring in the jointing clamp, and the two connecting wires (2) form electrical connection with a pair of input ends of the interference suppression module (3).
2. The anti-interference structure of the electronic detonator according to claim 1, wherein: the interference suppression module (3) is a common mode suppression circuit and/or a differential mode suppression circuit.
3. The anti-interference structure of the electronic detonator according to claim 2, wherein: the interference suppression module (3) is a common mode suppression circuit and a differential mode suppression circuit, and the common mode suppression circuit and the differential mode suppression circuit are connected in parallel and then connected between the two connecting wires (2).
4. An anti-interference structure of an electronic detonator according to any one of claims 2 to 3, wherein: the differential mode suppression circuit is an anti-static tube and/or a voltage-stabilizing pair tube.
5. The anti-interference structure of the electronic detonator according to claim 3, wherein: the differential mode suppression circuit comprises an anti-static tube and a voltage-stabilizing geminate tube, wherein the anti-static tube and the voltage-stabilizing geminate tube are connected in parallel and then connected between the two connecting wires (2).
6. An anti-interference structure of an electronic detonator according to any one of claims 2 to 3, wherein: the common mode rejection circuit comprises a pair of capacitors and/or a pair of piezoresistors, the pair of capacitors and/or the pair of piezoresistors are connected in series and then connected between the two connecting wires (2), and the series connection points of the pair of capacitors and/or the pair of piezoresistors are grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020701518.9U CN212158349U (en) | 2020-04-30 | 2020-04-30 | Anti-interference structure of electronic detonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020701518.9U CN212158349U (en) | 2020-04-30 | 2020-04-30 | Anti-interference structure of electronic detonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212158349U true CN212158349U (en) | 2020-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020701518.9U Active CN212158349U (en) | 2020-04-30 | 2020-04-30 | Anti-interference structure of electronic detonator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212158349U (en) |
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2020
- 2020-04-30 CN CN202020701518.9U patent/CN212158349U/en active Active
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