CN217032216U - Safe type electron detonator control module - Google Patents
Safe type electron detonator control module Download PDFInfo
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- CN217032216U CN217032216U CN202123171104.3U CN202123171104U CN217032216U CN 217032216 U CN217032216 U CN 217032216U CN 202123171104 U CN202123171104 U CN 202123171104U CN 217032216 U CN217032216 U CN 217032216U
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Abstract
The utility model relates to the technical field of civil explosive initiating explosive device manufacturing, and particularly discloses a safe electronic detonator control module which comprises a leg wire terminal, a detonator control chip, an ignition energy storage unit, an ignition switch and an igniter; the rectifier bridge circuit and the first one-way conduction circuit are also included; the two connecting pins of the leg wire terminal are electrically connected with the input end of the rectifier bridge circuit, the output end of the rectifier bridge circuit is electrically connected with the input end of the first one-way conduction circuit, the output end of the first one-way conduction circuit is electrically connected with the detonator control chip, and the direction from the input end to the output end of the first one-way conduction circuit is the electric energy conduction direction.
Description
Technical Field
The utility model relates to the technical field of civil explosive initiating explosive device manufacturing, in particular to a safe electronic detonator control module.
Background
The industrial digital electronic detonator is a detonator which adopts an electronic control module to control the detonation process, key devices of the electronic control module comprise a detonator control chip, a firing capacitor and an ignition device, each key device and other matched components (such as a leg wire terminal, a working capacitor, a resistor and the like) are integrated on a circuit board, the detonator control chip is connected with a detonation host through the leg wire terminal, and when the electronic detonator is used in a blasting field, the electronic control modules of a plurality of electronic detonators are firstly connected in parallel through leg wires to form a network and then connected to the detonation host through a detonation bus. Due to promotion of supervision policies of the electronic detonator industry, the digital electronic detonators with supervision functions can comprehensively replace traditional electronic detonators, and therefore the digital electronic detonators can be pushed in coal mine underground operation.
The underground coal mine production environment has certain particularity and is mainly characterized by small section, large influence of geological structure on blasting operation, complex surrounding environment, electromagnetic environment, high temperature, sulfur content, moisture, accompanying combustible gas generation and the like. Products used in underground coal mines need to meet the requirements of standards such as GB3836.1-2010 explosive environment equipment general requirements and GB3836-4-2010 intrinsic safety, at present, the domestic research on coal-permitted electronic detonators and matched detonators which are specially designed for underground coal mines and have blind areas in public security supervision is less, under the condition that the market demand of coal products is more and more increased, the current market needs a reliable ignition device under the low energy state specified by the coal safety standard, can also eliminate the potential safety hazard that the electric spark accidentally generated by the electronic detonator control module ignites combustible gas before and after the detonator is detonated, particularly, the electronic detonator control module solution can eliminate potential safety hazards that electric sparks are generated by accidental contact of two wire heads of the detonation bus when residual energy on the electronic detonator control module flows back to the detonation bus, combustible gas is ignited, and the like.
Disclosure of Invention
The embodiment of the utility model provides a safe electronic detonator control module, which is used for solving the problem that the electric spark caused by the fact that residual energy on the electronic detonator control module flows back to a detonating bus unexpectedly to ignite combustible gas needs to be eliminated in the prior art.
The embodiment of the utility model provides a safe electronic detonator control module, which comprises a leg wire terminal, a detonator control chip, an ignition energy storage unit, a detonation switch and an igniter; the ignition energy storage unit, the detonation switch and the igniter are sequentially connected in series at the output end of the detonator control chip to form an ignition loop, and the ignition energy storage unit is characterized by further comprising a rectifier bridge circuit and a first one-way conduction circuit; two connecting pins of the leg wire terminal are electrically connected with the input end of the rectifier bridge circuit, the output end of the rectifier bridge circuit is electrically connected with the input end of the first one-way conduction circuit, the output end of the first one-way conduction circuit is electrically connected with the detonator control chip, and the direction from the input end to the output end of the first one-way conduction circuit is the electric energy conduction direction.
The embodiment of the utility model has the beneficial effects that: the circuit between the leg wire terminal of the electronic detonator control module and the detonator control chip is provided with the one-way conduction circuit, so that the residual electric energy on the ignition circuit of each generator detonator after detonation can be prevented from being gathered on the detonation bus through the backflow of the leg wire terminal, the potential safety hazard of igniting combustible gas caused by electric sparks generated by accidental touch of two exposed wire ends of the field detonation bus after the detonator explodes is eliminated, and the rectifier bridge circuit is additionally arranged at the inlet of the leg wire of the detonator and meets the intrinsic safety requirement of the inlet, so that the polarity of the leg wire terminal is not needed to be distinguished when the leg wire terminal is connected into the circuit.
On the basis of the technical scheme, the utility model can be further improved as follows:
optionally, the device further comprises a signal acquisition circuit and a second unidirectional conducting circuit; the input end of the second unidirectional conduction circuit is electrically connected with a connecting pin of the pin wire terminal, the output end of the second unidirectional conduction circuit is electrically connected with one end of the signal acquisition circuit, and the direction from the input end to the output end of the second unidirectional conduction circuit is in an electric energy conduction direction; the other end of the signal acquisition circuit is electrically connected with the detonator control chip.
The implementation of the utility model adopts the above alternatives with the following beneficial effects: the unidirectional conduction circuit is arranged between the leg wire terminal of the electronic detonator control module and the signal acquisition circuit, so that after the electronic detonator is detonated, residual electric energy of each generator detonator after detonation cannot be collected to the detonation bus through a path from the signal acquisition circuit to the leg wire terminal in a backflow mode, and further the potential safety hazard that electric sparks ignite combustible gas is eliminated.
Optionally, the rectifier bridge circuit further comprises an inlet protection circuit, and the inlet protection circuit is arranged between the leg wire terminal and the input end of the rectifier bridge circuit.
Optionally, the entrance protection circuit includes a semiconductor discharge tube, and the semiconductor discharge tube is connected in parallel between two connection pins of the pin line terminal and the input end of the rectifier bridge circuit.
The implementation of the utility model adopts the above alternatives with the following beneficial effects: and a semiconductor discharge tube is connected between two ends of the leg wire input end, so that the situation that electronic elements are damaged and sparks are generated to ignite combustible gas in a coal mine due to high voltage or instantaneous large current on a circuit of the electronic detonator control module is avoided.
Optionally, the first unidirectional conducting circuit is one or more first diodes connected in series between the rectifier bridge circuit and the input end of the detonator control chip; and the positive electrode of one or more first diodes is electrically connected with the output end of the rectifier bridge circuit, and the negative electrode of the one or more first diodes is electrically connected with the input end of the detonator control chip.
Optionally, the second unidirectional conducting circuit is one or more second diodes connected in series between a connection pin of the pin line terminal and the signal acquisition circuit; and the anode of one or more second diodes is electrically connected with a connecting pin of the pin wire terminal, and the cathode of the one or more second diodes is electrically connected with the signal acquisition circuit.
The implementation of the utility model adopts the above alternatives with the following beneficial effects: the first diode and the second diode can prevent residual energy of a partial circuit of the rear-end detonator control chip from flowing back to the detonating bus through the leg wire terminal, electric sparks generated by accidental contact of two wire heads of the detonating bus are prevented from igniting underground combustible gas, when a plurality of diodes are connected in series, the situation that one diode is damaged or works abnormally can be ensured, other diodes are replaced, and the safety of the whole electronic detonator control module after detonating is further enhanced.
Optionally, the detonator control chip is further connected with a first working capacitor.
Optionally, the ignition energy storage unit is formed by connecting a plurality of energy storage capacitors in parallel.
The implementation of the utility model adopts the above alternatives with the following beneficial effects: the ignition energy storage unit formed by connecting a plurality of energy storage capacitors in parallel can ensure wide range of matching agents of the electronic detonator control module and reliable ignition.
The above description is only an overview of the technical solutions of the present invention, and the present invention can be implemented in accordance with the content of the description so as to make the technical means of the present invention more clearly understood, and the above and other objects, features, and advantages of the present invention will be more clearly understood.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic diagram of a circuit connection structure of a coal safety electronic detonator control module according to a specific embodiment of the present invention.
In the figure: 11-a pin wire terminal, 12-an inlet protection circuit, 13-a first one-way conduction circuit, 14-an ignition energy storage unit, 15-an igniter, 16-a signal acquisition circuit and 17-a second one-way conduction circuit.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1, in the embodiment of the present invention, circuits (such as a rectifier bridge circuit U1, unidirectional conduction circuits, a signal acquisition circuit, an entrance protection circuit, etc.) and components of the coal-based safety electronic detonator control module provided by the present invention are all disposed on a circuit board, and include a leg terminal 11, a detonator control chip U2, a signal acquisition circuit 16, an ignition energy storage unit 14, a detonation switch Q1, and an igniter 15, where the leg terminal 11 and the igniter 15 in the embodiment of the present invention are all existing structures disposed on the circuit board, and are not described herein again, the ignition energy storage unit 14 is formed by connecting a plurality of energy storage capacitors in parallel, specifically, two 33uF/16V tantalum capacitors (i.e., e., E1 and E2 in fig. 1) in parallel, the tantalum capacitors have small volume, are convenient, and are easy to mount a mechanical structure of the electronic detonator control module, the mechanical performance of the appearance structure of the module is improved, when sensitive agents are coated on the igniter 15, one tantalum capacitor can meet the requirement of ignition energy, and when the igniter 15 is coated with pause-sensitive agents, two tantalum capacitors connected in parallel can meet the requirement of ignition energy, so that the ignition energy storage unit 14 formed by connecting the two tantalum capacitors in parallel can ensure that the range of the matching agents of the electronic detonator control module is wide and the ignition is reliable. And a second working capacitor C2 is arranged between the ignition energy storage unit 14 and the detonator control chip U2, the working parameter of the second working capacitor C2 is 2.2uF/10V, and the second working capacitor C2 has energy storage and filtering functions and can supply power to the detonator control chip U2 for a short time under the condition that the power supply of a circuit in front of the detonator control chip U2 is abnormal. Two connecting pins of the leg wire terminal 11 are electrically connected with a detonator control chip U2, the signal acquisition circuit 16 is arranged between one connecting pin (pin 2 in fig. 1) of the leg wire terminal 11 and the detonator control chip U2, the ignition energy storage unit 14, the detonation switch Q1 and the igniter 15 are sequentially connected in series at the output end of the detonator control chip U2 to form an ignition loop, the detonation switch Q1 is a field effect tube, and the resistor R3 is a working resistor connected between the grid of the detonation switch Q1 and one output pin of the detonator control chip U2.
In order to meet the requirements of underground coal mine safe use, the utility model also provides a reliable design scheme, the electronic detonator control module further comprises a rectifier bridge circuit U1, a first one-way conduction circuit 13 and a second one-way conduction circuit 17, two connecting pins of the pin wire terminal 11 are electrically connected with the input end of the rectifier bridge circuit U1, the output end of the rectifier bridge circuit U1 is electrically connected with the input end of the first one-way conduction circuit 13, and the output end of the first one-way conduction circuit 13 is electrically connected with the detonator control chip U2. A complete rectifier bridge circuit U1 is added at the inlet of the detonator pin wire, so that the intrinsic safety requirement of the inlet is met, and the rectifier bridge circuit U1 ensures that the polarity of the pin wire terminal 11 is not needed to be distinguished when the pin wire terminal 11 is connected into the circuit. The input end of the second unidirectional conduction circuit 17 is electrically connected with a connecting pin of the leg wire terminal 11, the output end is electrically connected with one end of the signal acquisition circuit 16, and the other end of the signal acquisition circuit 16 is electrically connected with the detonator control chip U2. The input end to the output end of the first one-way conduction circuit 13 and the second one-way conduction circuit 17 are electric energy conduction directions, so that the residual electric energy from the rear-end detonator control chip U2 to the igniter 15 cannot flow back to the initiation bus through the leg wire terminal 11, after initiation on the blasting site is ensured, the residual electric energy in each generator detonator cannot be gathered on the initiation bus, and further, the coal mine underground combustible gas cannot be ignited due to electric sparks generated by accidental contact of two exposed wire heads after the initiation bus is exploded, so that life and property loss caused by explosion is avoided.
According to the embodiment of the utility model, the one-way conduction circuits are arranged between the leg wire terminal 11 of the electronic detonator control module and the detonator control chip U2 and between the leg wire terminal 11 and the signal acquisition circuit 16, so that after the electronic detonator adopting the electronic detonator control module circuit structure provided by the utility model is detonated in a coal mine, the residual electric energy of the detonator control chip U2, an ignition loop and the like after detonation can not be collected onto the detonation bus through the back flow of the leg wire terminal 11, and further, the potential safety hazard that electric sparks are generated due to accidental contact of two exposed wire ends of the detonation bus after detonation, and combustible gas is ignited is eliminated.
In the embodiment of the utility model, the coal-permitted safety electronic detonator control module further comprises an entrance protection circuit 12, and the entrance protection circuit 12 is arranged between the leg wire terminal 11 and the input end of the rectifier bridge circuit U1. Preferably, the inlet protection circuit 12 includes a semiconductor discharge tube, which is preferably a voltage switching type transient suppressor diode TSS in this embodiment, and the transient suppressor diode TSS is connected in parallel between the two connection pins of the pin terminal 11 and the input terminal of the rectifier bridge circuit U1. The transient suppression diode TSS is connected between the two ends of the leg wire input end on the electronic detonator circuit board, so that the phenomenon that electronic elements are damaged and sparks are generated on a circuit of the electronic detonator control module due to high voltage or instantaneous large current to cause combustible gas combustion and explosion is avoided. Secondly, current limiting resistors R1 and R2 are respectively connected in series between the two connection pins of the leg wire terminal 11 and the detonator control chip U2, and R1 and R2 are respectively located on two paths between the two ends of the transient suppression diode TSS and the rectifier bridge circuit U1.
In the preferred embodiment of the present invention, the first unidirectional conducting circuit 13 is two first diodes D1 and D2 connected in series between the rectifier bridge circuit U1 and the input terminal of the detonator control chip U2. The anode of the first diode D1 is electrically connected with the output end of the rectifier bridge circuit U1, the cathode of D1 is electrically connected with the anode of D2, and the cathode of D2 is electrically connected with the input end of the detonator control chip U2. The second unidirectional circuit 17 is two second diodes D3 and D4 connected in series between a connection pin of the pin terminal 11 and the signal acquisition circuit 16, the positive electrode of D3 is electrically connected to a connection pin (pin 2 in fig. 1) of the pin terminal 11, the negative electrode of D3 is electrically connected to the positive electrode of D4, and the negative electrode of D4 is electrically connected to the signal acquisition circuit 16. The first diode and the second diode can prevent residual electric energy of partial circuits of the U2 control chip of the rear-end detonator from being collected to the detonating bus through the pin terminal 11 in a backflow mode, electric sparks generated by accidental contact of two wire heads of the detonating bus can be prevented from igniting underground combustible gas, when a plurality of diodes are connected in series, the other diodes can be used for replacing under the condition that one diode is damaged or works abnormally, and therefore the safety of the whole electronic detonator control module after detonation is further enhanced.
In the embodiment of the utility model, the detonator control chip U2 is further connected with a first working capacitor C1, in the embodiment, the working parameter of the first working capacitor C1 is 4.7uF/25V, the first working capacitor C1 has energy storage and filtering functions, and is usually connected with an LDO circuit integrated in the detonator control chip U2, so that the working stability of the whole module circuit is ensured, and power can be supplied to the detonator control chip U2 for a short time when the power supply of the front-end circuit of the leg wire is abnormal.
In conclusion, the product realizes the intrinsic safety type design, the total stored electric energy does not exceed the range specified by the coal mine allowable standard in the operation process, and all performance indexes can meet the requirement of blasting operation on the premise that the total stored electric energy does not exceed the range specified by the coal mine allowable standard, after the detonator is normally detonated, the residual energy in the control module in the detonator cannot be collected onto the detonation bus through the backflow of the leg wire terminal, and the combustible gas cannot be exploded.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (8)
1. A safety electronic detonator control module comprises a leg wire terminal, a detonator control chip, an ignition energy storage unit, an ignition switch and an igniter; the ignition energy storage unit, the detonation switch and the igniter are sequentially connected in series at the output end of the detonator control chip to form an ignition loop, and the ignition energy storage device is characterized by further comprising a rectifier bridge circuit and a first one-way conduction circuit; two connecting pins of the leg wire terminal are electrically connected with the input end of the rectifier bridge circuit, the output end of the rectifier bridge circuit is electrically connected with the input end of the first one-way conduction circuit, the output end of the first one-way conduction circuit is electrically connected with the detonator control chip, and the direction from the input end to the output end of the first one-way conduction circuit is the electric energy conduction direction.
2. The safe electronic detonator control module of claim 1 further comprising a signal acquisition circuit and a second unidirectional conducting circuit; the input end of the second unidirectional conduction circuit is electrically connected with a connecting pin of the pin wire terminal, the output end of the second unidirectional conduction circuit is electrically connected with one end of the signal acquisition circuit, and the direction from the input end to the output end of the second unidirectional conduction circuit is an electric energy conduction direction; the other end of the signal acquisition circuit is electrically connected with the detonator control chip.
3. The safety electronic detonator control module of claim 1 further comprising an ingress protection circuit disposed between the stub wire terminal and the rectifier bridge circuit input.
4. The safety electronic detonator control module of claim 3 wherein the inlet protection circuit comprises a semiconductor discharge tube connected in parallel between the two connection pins of the stub terminal and the rectifier bridge circuit input.
5. The safe electronic detonator control module of claim 1 wherein the first unidirectional conductive circuit is one or more first diodes connected in series between the rectifier bridge circuit and the input terminal of the detonator control chip; and the anode of one or more first diodes is electrically connected with the output end of the rectifier bridge circuit, and the cathode of the one or more first diodes is electrically connected with the input end of the detonator control chip.
6. The safety electronic detonator control module of claim 2 wherein the second unidirectional conducting circuit is one or more second diodes connected in series between a connection pin of the stub terminal and the signal acquisition circuit; and the anode of one or more second diodes is electrically connected with a connecting pin of the pin wire terminal, and the cathode of the one or more second diodes is electrically connected with the signal acquisition circuit.
7. The safety electronic detonator control module of claim 5 wherein the detonator control chip is further connected to a first working capacitor.
8. The safe electronic detonator control module of claim 1 wherein the firing energy storage unit is formed by a plurality of energy storage capacitors connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123171104.3U CN217032216U (en) | 2021-12-16 | 2021-12-16 | Safe type electron detonator control module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123171104.3U CN217032216U (en) | 2021-12-16 | 2021-12-16 | Safe type electron detonator control module |
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| CN217032216U true CN217032216U (en) | 2022-07-22 |
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| CN202123171104.3U Active CN217032216U (en) | 2021-12-16 | 2021-12-16 | Safe type electron detonator control module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115420159A (en) * | 2022-09-05 | 2022-12-02 | 天津津航计算技术研究所 | Current-limiting protection initiation circuit applied to insensitive electric initiator |
-
2021
- 2021-12-16 CN CN202123171104.3U patent/CN217032216U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115420159A (en) * | 2022-09-05 | 2022-12-02 | 天津津航计算技术研究所 | Current-limiting protection initiation circuit applied to insensitive electric initiator |
| CN115420159B (en) * | 2022-09-05 | 2024-01-16 | 天津津航计算技术研究所 | Current-limiting protection detonating circuit applied to insensitive electric detonators |
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