CN219551327U - Permitted type double-loop electronic control module for coal mine - Google Patents
Permitted type double-loop electronic control module for coal mine Download PDFInfo
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- CN219551327U CN219551327U CN202320638291.1U CN202320638291U CN219551327U CN 219551327 U CN219551327 U CN 219551327U CN 202320638291 U CN202320638291 U CN 202320638291U CN 219551327 U CN219551327 U CN 219551327U
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Abstract
The utility model provides a permitted double-loop electronic control module for a coal mine, which comprises the following components in sequence: the intrinsic safety interface circuit is used for ensuring that the current meets the requirement of intrinsic safety; the communication control loop is used for realizing the communication of the electronic detonator in a low-voltage state before charging; the ignition circuit is used for realizing the detonation of the electronic detonator in a charged high-voltage state; the PMOS tube Q2 is connected between the communication control loop and the ignition loop, and the PMOS tube Q2 is disconnected under low voltage and is connected under high voltage. By separating the communication control loop from the ignition loop, reverse discharge is avoided, and the safety of the digital electronic detonator is improved. The whole circuit works in a low-voltage state before charging, at the moment, the PMOS tube Q2 is disconnected, and the ignition circuit is disconnected; the whole circuit works in a high-voltage state after charging, the PMOS tube Q2 is conducted at the moment, the detonator enters a state to be exploded after charging, and the detonator can be detonated after receiving an instruction.
Description
Technical Field
The utility model relates to the technical field of electronic detonators, in particular to a permitted double-loop electronic control module for a coal mine.
Background
The digital electronic detonator, that is, the detonator for controlling the detonation process by adopting the electronic control module, is essentially characterized in that a control module containing a miniature electronic chip is used for driving an ignition head. The electronic control module is a special circuit module which is arranged in the digital electronic detonator, has the functions of detonator initiation delay time control and initiation energy control, is internally provided with a detonator identity information code and an initiation password, can test the functions and performances of the electronic control module and the electrical performance of a detonator ignition element, and can communicate with an initiation controller and other external control equipment.
With the development of technology and the improvement of safety requirements, digital electronic detonators are also pushed in underground coal mine operation. But the underground production environment of the coal mine has certain specificity, and is mainly characterized by small section, large influence of geological structure on blasting operation, complex surrounding environment, electromagnetic environment, high temperature, sulfur, humidity, generation of combustible gas and the like, so that the product used underground the coal mine needs to meet corresponding standard requirements.
In the process of laying the digital electronic detonator, a communication signal is required to be conducted to perform corresponding setting and detection, but in the process, the communication capacitor can be reversely discharged to a detonation circuit to cause false explosion, so that potential safety hazards exist.
Disclosure of Invention
The utility model aims to provide a coal mine allowable type double-loop electronic control module so as to improve the safety of a digital electronic detonator.
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
According to one aspect of the utility model, there is provided a coal mine allowable dual-loop electronic control module comprising:
the intrinsic safety interface circuit is connected to the detonator leg wire and used for ensuring that the current meets the requirement of intrinsic safety;
the communication control loop is used for realizing the communication of the electronic detonator in a low-voltage state before charging; and
the ignition circuit is used for realizing the detonation of the electronic detonator in a charged high-voltage state;
the PMOS tube Q2 is connected between the communication control loop and the ignition loop, and the PMOS tube Q2 is disconnected under low voltage and is connected under high voltage.
In one embodiment, the intrinsic safety interface circuit includes an electrical connection:
the current limiting module is used for limiting the current;
the transient suppression module is used for preventing surge pulses;
the rectification module is used for converting alternating current into direct current;
the blocking module is used for preventing the communication control loop from discharging to the detonator leg wire; and
and the receiving and transmitting auxiliary module is used for clamping the output signal.
In one embodiment, the communication control loop comprises:
the input pin of the control chip U1 is connected to the output end of the intrinsic safety interface circuit, and the output pin of the control chip U1 is connected to the ignition loop;
the communication capacitor C1 is connected in parallel with two ends of the intrinsic safety interface circuit; and
the voltage stabilizing tube D5 and the current limiting resistor R8 are connected in series and then connected to two ends of the communication capacitor C1 in parallel.
In one embodiment, the gate of the PMOS transistor Q2 is connected between the voltage regulator D5 and the current limiting resistor R8; the source electrode of the PMOS tube Q2 is connected with the communication control loop; and the drain electrode of the PMOS tube Q2 is connected with the ignition loop.
In an embodiment, the firing circuit comprises:
the detonation capacitor C2 is connected in parallel with two ends of the communication control loop;
the MOS tube Q1, the ignition bridge wire B1 and the elastic piece J1 are sequentially connected in series and then connected in parallel to two ends of the detonation capacitor C2;
the grid electrode of the MOS tube Q1 is connected with an output pin of the control chip U1.
In an embodiment, the two ends of the ignition bridge wire B1 are connected in parallel with a bleeder resistor R11.
In one embodiment, the two ends of the ignition circuit are connected with a discharging resistor R9 in parallel.
In an embodiment, the QS pin of the chip U1 is connected between the MOS transistor Q1 and the ignition bridge wire B1 through a current limiting resistor R2.
In an embodiment, the ignition circuit further includes a pull-down resistor R5, one end of the pull-down resistor R5 is connected to the gate of the MOS transistor Q1, and the other end of the pull-down resistor R5 is grounded.
In one embodiment, a current limiting resistor R10 is further connected between the communication control circuit and the ignition circuit.
The embodiment of the utility model has the beneficial effects that: by separating the communication control loop from the ignition loop, reverse discharge is avoided, and the safety of the digital electronic detonator is improved. The whole circuit works in a low-voltage state before charging, at the moment, the PMOS tube Q2 is disconnected, and the ignition circuit is disconnected; the whole circuit works in a high-voltage state after charging, the PMOS tube Q2 is conducted at the moment, the detonator enters a state to be exploded after charging, and the detonator can be detonated after receiving an instruction.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
The above features and advantages of the present utility model will be better understood after reading the detailed description of embodiments of the present disclosure in conjunction with the following drawings. In the drawings, the components are not necessarily to scale and components having similar related features or characteristics may have the same or similar reference numerals.
FIG. 1 is a schematic diagram of an overall circuit configuration of an embodiment of the present utility model;
FIG. 2 is an enlarged schematic diagram of the intrinsic safety interface circuit 100 of FIG. 1;
FIG. 3 is a schematic diagram showing the connection between the communication control circuit 200 and the ignition circuit 300 in FIG. 1;
FIG. 4 is an enlarged schematic diagram of the communication control circuit 200 in FIG. 1;
fig. 5 is an enlarged schematic view of the firing circuit 300 of fig. 1.
Detailed Description
The utility model is described in detail below with reference to the drawings and the specific embodiments. It is noted that the aspects described below in connection with the drawings and the specific embodiments are merely exemplary and should not be construed as limiting the scope of the utility model in any way.
As shown in fig. 1, an embodiment of the present utility model provides a dual-loop electronic control module for coal mine permission, which includes an intrinsic safety interface circuit 100, a communication control loop 200 and an ignition loop 300 connected in sequence.
The intrinsic safety interface circuit 100 is connected to the detonator leg wire, and is used for ensuring that the current meets the requirement of intrinsic safety. As shown in fig. 3, a PMOS transistor Q2 is connected between the communication control circuit and the ignition circuit, and the PMOS transistor Q2 is turned off at low voltage and turned on at high voltage.
Specifically, the intrinsic safety circuit is a circuit which cannot ignite a predetermined explosive gas mixture under a predetermined test condition, and is the safest of the explosion-proof electrical devices because it does not detonate even under the predetermined test condition, i.e., is "intrinsically safe", and is called intrinsically safe, or simply intrinsic safety.
In this embodiment, the intrinsic safety interface circuit 100 includes an electrical connection: the current limiting module is used for limiting the current; the transient suppression module is used for preventing surge pulses; the rectification module is used for converting alternating current into direct current; the blocking module is used for preventing the communication control loop from discharging to the detonator leg wire; and a transceiver auxiliary module for clamping the output signal.
The circuit structure of the intrinsic safety interface circuit 100 is shown in fig. 2, and for specific elements and principles of the intrinsic safety interface circuit, reference may be made to the patent CN113405416a before the present inventor, which is not repeated herein.
The communication control circuit 200 is used for realizing communication of the electronic detonator in a low-voltage state before charging. As shown in fig. 4, the communication control circuit 200 specifically includes: the control chip U1, the communication capacitor C1, the voltage stabilizing tube D5 and the current limiting resistor R8. The input pins IN1 and IN2 of the control chip U1 are connected to two output terminals of the intrinsic safety interface circuit 100, the output pin out_g thereof is connected to the ignition circuit 300, and the QS pin thereof is connected between the MOS transistor Q1 and the ignition bridge wire B1 via the current limiting resistor R2. The communication capacitor C1 is connected in parallel to two ends of the intrinsic safety interface circuit 100. The voltage stabilizing tube D5 and the current limiting resistor R8 are connected in series and then connected to two ends of the communication capacitor C1 in parallel.
The grid electrode of the PMOS tube Q2 is connected between the voltage stabilizing tube D5 and the current limiting resistor R8; the source electrode of the PMOS tube Q2 is connected with the communication control loop; the drain electrode of the PMOS tube Q2 is connected with the ignition loop. Therefore, only after charging, the voltage difference between the two ends of the current limiting resistor R8 reaches the condition that the PMOS tube Q2 is conducted, and the PMOS tube Q2 is conducted. In this embodiment, a current limiting resistor R10 is further connected between the communication control circuit 200 and the ignition circuit 300.
The firing circuit 300 is used to effect detonation of the electronic detonator in a charged high voltage state. As shown in fig. 5, the firing circuit 300 specifically includes: the detonation capacitor C2 is connected in parallel with two ends of the communication control loop; the MOS tube Q1, the ignition bridge wire B1 and the elastic piece J1 are connected in series in sequence and then connected in parallel to two ends of the detonation capacitor C2.
The gate of the MOS transistor Q1 is connected to an output pin of the control chip U1. The source electrode of the MOS tube Q1 is grounded, and the drain electrode of the MOS tube Q1 is connected with the ignition bridge wire B1. When the output pin OUT_G of the control chip U1 outputs a high level, the MOS transistor Q1 is conducted. The ignition circuit 200 further includes a pull-down resistor R5, one end of the pull-down resistor R5 is connected to the gate of the MOS transistor Q1, and the other end of the pull-down resistor R5 is grounded. If the output pin outputs a high level, R5 provides a default level for Q1.
In addition, the module forms a two-stage independent reverse discharge prevention structure by arranging the PMOS tube Q2 and the MOS tube Q1, thereby ensuring that potential safety hazards cannot be generated due to reverse discharge.
Further, a double discharge circuit is provided in the present embodiment. And the two ends of the ignition bridge wire B1 are connected in parallel with a discharge resistor R11 for releasing residual energy in the detonation capacitor C2 after detonation. In addition, the two ends of the ignition loop are also connected with a discharge resistor R9 in parallel, so that the circuit can automatically release energy storage through the discharge resistor R9 if the control module fails to work normally.
In summary, in the embodiment of the utility model, the communication control loop and the ignition loop are separated, so that reverse discharge is avoided, and the safety of the digital electronic detonator is improved. The whole circuit works in a low-voltage state before charging, at the moment, the PMOS tube Q2 is disconnected, and the ignition circuit is disconnected; the whole circuit works in a high-voltage state after charging, the PMOS tube Q2 is conducted at the moment, the detonator enters a state to be exploded after charging, and the detonator can be detonated after receiving an instruction. Meanwhile, by arranging the double discharging loops, the electric energy stored in the capacitor can be automatically discharged, so that potential safety hazards are eliminated.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description is only of preferred embodiments of the utility model and is not intended to limit the utility model to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.
Claims (10)
1. The utility model provides a permitted type double-circuit electronic control module in colliery which characterized in that includes that the preface links to each other: the intrinsic safety interface circuit is connected to the detonator leg wire and used for ensuring that the current meets the requirement of intrinsic safety;
the communication control loop is used for realizing the communication of the electronic detonator in a low-voltage state before charging; and
the ignition circuit is used for realizing the detonation of the electronic detonator in a charged high-voltage state;
the PMOS tube Q2 is connected between the communication control loop and the ignition loop, and the PMOS tube Q2 is disconnected under low voltage and is connected under high voltage.
2. The mine adaptive dual-loop electronic control module of claim 1, wherein the intrinsically safe interface circuit comprises an electrical connection:
the current limiting module is used for limiting the current;
the transient suppression module is used for preventing surge pulses;
the rectification module is used for converting alternating current into direct current;
the blocking module is used for preventing the communication control loop from discharging to the detonator leg wire; and
and the receiving and transmitting auxiliary module is used for clamping the output signal.
3. A coal mine licensed dual loop electronic control module according to claim 1, wherein the communications control loop comprises:
the input pin of the control chip U1 is connected to the output end of the intrinsic safety interface circuit, and the output pin of the control chip U1 is connected to the ignition loop;
the communication capacitor C1 is connected in parallel with two ends of the intrinsic safety interface circuit; and
the voltage stabilizing tube D5 and the current limiting resistor R8 are connected in series and then connected to two ends of the communication capacitor C1 in parallel.
4. A coal mine allowable dual-loop electronic control module according to claim 3, wherein the gate of said PMOS transistor Q2 is connected between said regulator D5 and current limiting resistor R8; the source electrode of the PMOS tube Q2 is connected with the communication control loop; and the drain electrode of the PMOS tube Q2 is connected with the ignition loop.
5. The mine adaptive double circuit electronic control module of claim 4, wherein the ignition circuit comprises:
the detonation capacitor C2 is connected in parallel with two ends of the communication control loop;
the MOS tube Q1, the ignition bridge wire B1 and the elastic piece J1 are sequentially connected in series and then connected in parallel to two ends of the detonation capacitor C2;
the grid electrode of the MOS tube Q1 is connected with an output pin of the control chip U1.
6. The allowable dual-loop electronic control module for coal mines according to claim 5, wherein the two ends of said ignition bridge wire B1 are connected in parallel with a bleeder resistor R11.
7. The allowable dual-loop electronic control module for coal mines according to claim 5, wherein a bleeder resistor R9 is connected in parallel to both ends of said ignition loop.
8. The allowable dual-loop electronic control module for coal mines according to claim 5, wherein a QS pin of the chip U1 is connected between the MOS transistor Q1 and the ignition bridge wire B1 via a current limiting resistor R2.
9. The allowable dual-loop electronic control module for coal mines according to claim 4, wherein said ignition loop further comprises a pull-down resistor R5, one end of said pull-down resistor R5 is connected to the gate of said MOS transistor Q1, and the other end of said pull-down resistor R5 is grounded.
10. The allowable dual-loop electronic control module for coal mines according to claim 1, wherein a current limiting resistor R10 is further connected between the communication control loop and the ignition loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320638291.1U CN219551327U (en) | 2023-03-28 | 2023-03-28 | Permitted type double-loop electronic control module for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320638291.1U CN219551327U (en) | 2023-03-28 | 2023-03-28 | Permitted type double-loop electronic control module for coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219551327U true CN219551327U (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320638291.1U Active CN219551327U (en) | 2023-03-28 | 2023-03-28 | Permitted type double-loop electronic control module for coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219551327U (en) |
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- 2023-03-28 CN CN202320638291.1U patent/CN219551327U/en active Active
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