CN212933326U - Control and fault diagnosis circuit for military drilling electronic detonator - Google Patents
Control and fault diagnosis circuit for military drilling electronic detonator Download PDFInfo
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- CN212933326U CN212933326U CN202021149137.0U CN202021149137U CN212933326U CN 212933326 U CN212933326 U CN 212933326U CN 202021149137 U CN202021149137 U CN 202021149137U CN 212933326 U CN212933326 U CN 212933326U
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Abstract
The utility model discloses a control and fault diagnosis circuit for military drilling electronic detonator. The utility model discloses a control circuit includes "charging/discharge" circuit, "detonate" circuit and "self-destruction" circuit triplex, drives "charging/discharging", "detonate" and "self-destruction" instruction of electronic detonator execution singlechip output respectively, and four states of "charging", "detonate", "discharge", "self-destruction" of fault diagnosis circuit monitoring control circuit, including "charging" state feedback circuit, "detonate" state feedback circuit, "discharge" state feedback circuit and "self-destruction" state feedback circuit. The utility model discloses the blindness of electronic detonator system operation that detonates has been avoided to improve the reliability and the security of system of detonating, improved the military drill level.
Description
Technical Field
The utility model belongs to the technical field of the firemen explodes, concretely relates to control and fault diagnosis circuit for military drilling electronic detonator.
Background
The control logic of the electronic detonator is realized by a single chip microcomputer program, and the execution of the output signal of the single chip microcomputer is finished by a peripheral control circuit. The single chip microcomputer has high reliability, but the control circuit consists of a plurality of discrete electronic components, and the reliability of the single chip microcomputer depends on the self performance and the mutual connection of the electronic components. Therefore, the reliability of the electronic detonator control circuit is greatly lower than that of a single chip microcomputer. Due to the volume limitation of the electronic detonator, the volume and the heat dissipation condition of the built-in control circuit board are also limited, and the control circuit module is not provided with a redundant circuit generally.
Under above condition, the utility model discloses how research improves whole ignition system's reliability from the aspect of electronic detonator control circuit. The working state of key components in the control circuit can be monitored in real time and fed back to the single chip microcomputer to be communicated with the upper computer, and the communication is used as a basis for subsequent control operation, so that the failure rate of the electronic detonator caused by discrete electronic components is greatly reduced, and the military drilling level is improved.
SUMMERY OF THE UTILITY MODEL
To the practical problem in the background art, the utility model provides a control and failure diagnosis circuit for military drilling electronic detonator has the good advantage of security performance, has solved the problem of electronic detonator control circuit stateless feedback among the prior art.
The technical proposal adopted by the utility model comprises the following contents:
a control and fault diagnosis circuit for military drilling electronic detonators. The circuit comprises a control circuit and a fault diagnosis circuit.
1. The control circuit comprises three parts of a charging/discharging circuit, a detonation circuit and a self-destruction circuit.
(1) "charge/discharge" circuit: the charging/discharging control signal output by the single chip is connected with the enhanced NMOS tube T1Of grid electrode, T1The source of the charge source is grounded, and a +15V charge power supply signal passes through a diode VD1And a discharge resistor R1Connect T1Drain electrode of, VD1The cathode of the capacitor passes through a ceramic capacitor C of 68 mu F/50V1And (4) grounding. T is1The grid electrode of the capacitor is connected with a monolithic capacitor C of 0.01 mu F3And (4) grounding.
(2) The "firing" circuit: in order to further reduce the static and dynamic power consumption of the circuit and improve the driving capability of the detonation control circuit, the detonation control signal output by the singlechip firstly passes through a two-stage CMOS phase inverter F1And F2Then connected to the enhanced NMOS transistor T2Of grid electrode, T2Drain electrode of (2) is connected with VD1Of a cathode of, T2Source electrode resistance R through bridge wire2And (4) grounding. T is2The grid electrode of the capacitor is connected with a monolithic capacitor C of 0.01 mu F4And (4) grounding.
(3) "self-destruct" circuit: the self-destruction control signal output by the singlechip is connected with the enhanced NMOS tube T3Of grid electrode, T3The drain electrode of the power supply is connected with a +3.3V singlechip power supply, T3Is grounded. T is3The grid electrode of the capacitor is connected with a monolithic capacitor C of 0.01 mu F5And (4) grounding.
2. The fault diagnosis circuit monitors four important states of charging, detonation, discharging and self-destruction of the control circuit.
(1) The "charging" state feedback circuit: VD1The cathode of the single chip microcomputer is connected with the input end of a 10-bit A/D conversion interface of the single chip microcomputer to convert and output a digital signal D1I.e. the "charging" state detection signal g0。
(2) ' guideExplosion state feedback circuit: the 'detonation' control signal and 'charging' state detection signal g output by the single chip microcomputer0As NAND gate Y1Input of (2), Y1Output of the inverter is connected with a NOT gate F1，F1The output is the 'detonation' fault signal g1。
(3) The "discharge" state feedback circuit: charging/discharging control signal and charging state detection signal g output by single chip microcomputer0As NAND gate Y2Input of (2), Y2Output of the inverter is connected with a NOT gate F2，F2Is the 'discharge' fault signal g2。
(4) The self-destruction state feedback circuit: the power supply of the singlechip is connected with the input end of a 10-bit A/D conversion interface of the singlechip, and converts the output digital signal into D2. Self-destruction control signal and D output by single chip microcomputer2As NAND gate Y3Input of (2), Y3Output of the inverter is connected with a NOT gate F3，F3The output of (c) is a self-destruction fault signal g3。
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the control and fault diagnosis circuit of the electronic detonator provides a control and feedback idea, overcomes the defect that the existing electronic detonator control circuit lacks real-time state feedback of key discrete components, avoids the blindness of the operation of an electronic detonator ignition system, and improves the reliability and the safety of the ignition system.
2. The control and fault diagnosis circuit of the electronic detonator greatly reduces the failure rate of the electronic detonator caused by the fault of the control circuit and improves the level of combined military drilling.
Drawings
FIG. 1 is a block diagram of a military drill electronic detonator control system;
FIG. 2 is a schematic diagram of a military drill electronic detonator control and fault diagnosis circuit;
FIG. 3 is a flow chart of the military drill electronic detonator control and fault diagnosis circuit.
Detailed Description
The following will be further described with reference to the accompanying drawings in the embodiments of the present invention.
Fig. 1 is a block diagram showing the components of a military drilling electronic detonator control system, wherein the control circuit respectively drives an electronic detonator to execute charging/discharging, detonation and self-destruction commands output by a single chip microcomputer. The utility model discloses control circuit's fault diagnosis circuit has been increased. After the single chip microcomputer sends out a control instruction, whether the control circuit executes the instruction accurately or not needs to collect real-time state data of charging, detonating, discharging and self-destruction from the control circuit and feed the data back to the single chip microcomputer. According to the logical relation between the action instruction sent by the single chip microcomputer and the states of the corresponding components, whether the control circuit correctly executes the instructions of charging, detonating, discharging, self-destruction and the like is judged according to the high and low levels output by the logic gate in the fault diagnosis circuit.
Fig. 2 is a schematic diagram of a military drilling electronic detonator control and fault diagnosis circuit.
The circuit comprises a control circuit and a fault diagnosis circuit.
1. The control circuit comprises three parts of a charging/discharging circuit, a detonation circuit and a self-destruction circuit.
(1) "charge/discharge" circuit: the charging/discharging control signal output by the single chip is connected with the enhanced NMOS tube T1Of grid electrode, T1The source of the charge source is grounded, and a +15V charge power supply signal passes through a diode VD1And a discharge resistor R1Connect T1Drain electrode of, VD1The cathode of the capacitor passes through a ceramic capacitor C of 68 mu F/50V1And (4) grounding. T is1The grid electrode of the capacitor is connected with a monolithic capacitor C of 0.01 mu F3And (4) grounding.
(2) The "firing" circuit: in order to further reduce the static and dynamic power consumption of the circuit and improve the driving capability of the detonation control circuit, the detonation control signal output by the singlechip firstly passes through a two-stage CMOS phase inverter F1And F2Then connected to the enhanced NMOS transistor T2Of grid electrode, T2Drain electrode of (2) is connected with VD1Of a cathode of, T2Source electrode resistance R through bridge wire2And (4) grounding. T is2Gate of 0.01 muFMonolithic capacitor C4And (4) grounding.
(3) "self-destruct" circuit: the self-destruction control signal output by the singlechip is connected with the enhanced NMOS tube T3Of grid electrode, T3The drain electrode of the power supply is connected with a +3.3V singlechip power supply, T3Is grounded. T is3The grid electrode of the capacitor is connected with a monolithic capacitor C of 0.01 mu F5And (4) grounding.
2. The fault diagnosis circuit monitors four important states of charging, detonation, discharging and self-destruction of the control circuit.
(1) The "charging" state feedback circuit: VD1The cathode of the single chip microcomputer is connected with the input end of a 10-bit A/D conversion interface of the single chip microcomputer to convert and output a digital signal D1I.e. the "charging" state detection signal g0。
(2) The 'detonation' state feedback circuit: the 'detonation' control signal and 'charging' state detection signal g output by the single chip microcomputer0As NAND gate Y1Input of (2), Y1Output of the inverter is connected with a NOT gate F1，F1The output is the 'detonation' fault signal g1。
(3) The "discharge" state feedback circuit: charging/discharging control signal and charging state detection signal g output by single chip microcomputer0As NAND gate Y2Input of (2), Y2Output of the inverter is connected with a NOT gate F2，F2Is the 'discharge' fault signal g2。
(4) The self-destruction state feedback circuit: the power supply of the singlechip is connected with the input end of a 10-bit A/D conversion interface of the singlechip, and converts the output digital signal into D2. Self-destruction control signal and D output by single chip microcomputer2As NAND gate Y3Input of (2), Y3Output of the inverter is connected with a NOT gate F3，F3The output of (c) is a self-destruction fault signal g3。
Fig. 3 is a flow chart showing the operation flow of military drill electronic detonator control and fault diagnosis.
1. Executing 'charging/discharging', 'detonating' and 'self-destruction' instructions output by the singlechip
(1) Execute the "charge/discharge" instruction: when the singlechip receives a charging control instruction from the detonator, a charging/discharging control signal output by the singlechip is at low level, and the enhanced NMOS tube T is connected with the power supply1Cut-off, +15V charging power supply signal passes through diode VD1To energy storage capacitor C1Charging, as a bridge wire resistor R2The reserve energy of detonation. When the singlechip receives a discharge control instruction from the detonator, a charge/discharge control signal output by the singlechip is at a high level, and the enhanced NMOS tube T is1Conducting and energy-storing capacitor C1And a resistor R1Forming a discharge circuit to cut off the bridge wire resistor R2The detonation energy source ensures that the electronic detonator cannot detonate.
(2) Executing a "fire" command: when the single chip receives the detonation control instruction from the detonator, the detonation control signal output by the single chip is at high level and passes through the two-stage CMOS phase inverter F1And F2Make the enhanced NMOS transistor T2Conducting and energy-storing capacitor C1To the bridge wire resistance R2Discharging to form instantaneous large current, and igniting the electronic detonator.
(3) Executing a self-destruction instruction: when the singlechip receives a self-destruction control instruction from the detonator, the self-destruction control signal output by the singlechip is high level, and the enhanced NMOS tube T is connected with the power supply3And (4) conducting, short-circuiting the +3.3V power supply of the single chip microcomputer, enabling the single chip microcomputer to be incapable of working, and self-destroying the electronic detonator.
2. Four important states of charging, detonation, discharging and self-destruction of the control circuit are monitored.
(1) Monitoring the state of charge of an energy storage capacitor
After the singlechip sends a charging command, the charging state feedback circuit works. Energy storage capacitor C1The terminal voltage is fed back to the input end of a 10-bit A/D conversion circuit of the singlechip to be converted into a standard digital signal D1，D1I.e. the "charging" state detection signal g0And is output by the singlechip. When g is0When the voltage is high, it represents the storage capacitor C1The system is fully charged and is ready for detonation operation; when g is0When the voltage is low, it represents the storage capacitor C1The charging voltage does not reach the required value, and a charging fault alarm signal is sent out, so that whether the charging voltage of the energy storage capacitor reaches 15V or not is monitored.
(2) Monitoring 'fire' instruction execution status
After the detonation command is delayed for 2s, the detonation control signal output by the singlechip and the energy storage capacitor C1Is detected as a "charging" detection signal g0Via NAND gate Y1And not gate F1Logic AND, output as 'firing' execution fault signal g1G is mixing1And feeding back to the singlechip. If the detonator is not detonated after the detonation command is delayed for 2s, the energy storage capacitor C1Unpaired bridge wire resistor R2Discharge, g1And outputting high level, sending out a detonation fault alarm signal, and automatically starting a self-destruction control circuit. g1When the output level is low, the "firing" instruction is executed normally.
(3) Monitoring the execution status of a 'discharge' instruction
"discharge" and "charge" are a pair of complementary signals. When the single chip sends out a discharge command, the single chip is connected with the energy storage capacitor C1Charge detection signal g0Via NAND gate Y2And not gate F2Logic AND, output as 'discharge' instruction execution fault signal g2G is mixing2And feeding back to the singlechip. If the discharging instruction is sent out, the energy storage capacitor C1Not discharged, then g2And outputting high level and sending out a discharge fault alarm signal. g2When a low level is output, it indicates that the "discharge" instruction is executed normally.
(4) Monitoring the execution state of self-destruction instruction
When the singlechip sends a self-destruction instruction, the enhanced NMOS tube T3And (4) conducting, short-circuiting the +3.3V power supply of the single chip microcomputer, enabling the single chip microcomputer to be incapable of working, and self-destroying the electronic detonator. If the power supply of the singlechip is not short-circuited, the self-destruction instruction execution fails, and a self-destruction fault signal g3And outputting high level and sending out a self-destruction fault alarm signal.
Claims (2)
1. A control and fault diagnosis circuit for military drill electronic detonators is characterized in that: the device comprises a control circuit and a fault diagnosis circuit;
the control circuit comprises a charging/discharging circuit, a detonating circuit and a self-destruction circuit, and respectively drives the electronic detonator to execute charging/discharging, detonating and self-destruction instructions output by the singlechip;
a charging/discharging circuit, wherein a charging/discharging control signal output by the singlechip is connected with an enhanced NMOS tube T1Of grid electrode, T1The source of the charge source is grounded, and a +15V charge power supply signal passes through a diode VD1And a discharge resistor R1Connect T1Drain electrode of, VD1The cathode of the capacitor passes through a ceramic capacitor C of 68 mu F/50V1Ground, T1The grid electrode of the capacitor is connected with a monolithic capacitor C of 0.01 mu F3Grounding;
the 'detonation' circuit is characterized in that a 'detonation' control signal output by the singlechip firstly passes through a two-stage CMOS phase inverter F1And F2Then connected to the enhanced NMOS transistor T2Of grid electrode, T2Drain electrode of (2) is connected with VD1Of a cathode of, T2Source electrode resistance R through bridge wire2Ground, T2The grid electrode of the capacitor is connected with a monolithic capacitor C of 0.01 mu F4Grounding;
a self-destruction circuit, wherein the self-destruction control signal output by the singlechip is connected with an enhanced NMOS tube T3Of grid electrode, T3The drain electrode of the power supply is connected with a +3.3V singlechip power supply, T3Is grounded at the source, T3The grid electrode of the capacitor is connected with a monolithic capacitor C of 0.01 mu F5Grounding;
the fault diagnosis circuit monitors four states of charging, detonating, discharging and self-destroying of the control circuit, and comprises a charging state feedback circuit, a detonating state feedback circuit, a discharging state feedback circuit and a self-destroying state feedback circuit;
"Charge" state feedback circuit, VD1The cathode of the single chip microcomputer is connected with the input end of a 10-bit A/D conversion interface of the single chip microcomputer to convert and output a digital signal D1I.e. the "charging" state detection signal g0；
The 'detonation' state feedback circuit, the 'detonation' control signal output by the single chip microcomputer and C1Is detected by the "charging" state detection signal g0As NAND gate Y1Input of (2), Y1Output of the inverter is connected with a NOT gate F1，F1The output is the 'detonation' fault signal g1；
Discharge state feedback circuit, charge/discharge control signal output by single-chip microcomputer and C1Is detected by the "charging" state detection signal g0As NAND gate Y2Input of (2), Y2Output of the inverter is connected with a NOT gate F2，F2Is the 'discharge' fault signal g2；
The 'self-destruction' state feedback circuit, the SCM +3.3V power supply voltage is connected with the input end of 10-bit A/D conversion interface of the SCM, and converts the output digital signal into D2Self-destruction control signal and D output by single-chip microcomputer2As NAND gate Y3Input of (2), Y3Output of the inverter is connected with a NOT gate F3，F3The output of (c) is a self-destruction fault signal g3。
2. The circuit of claim 1, wherein the circuit collects real-time status data of "charge", "detonate", "discharge" and "self-destruction" from the control circuit and feeds back the data to the single chip, and according to the logical relationship between the action command sent by the single chip and the status of the corresponding components, the high and low levels output by the logic gate in the circuit determine whether the control circuit correctly executes the command of "charge", "detonate", "discharge" and "self-destruction";
in the fault diagnosis circuit, when the charging state detects the signal g0When the voltage is high, it represents the storage capacitor C1Is fully charged; when g is0When it is at a low level, it represents C1When the charging voltage does not reach the required value, a charging fault alarm signal is sent out;
if the electronic detonator is not detonated, a 'detonation' fault signal g is generated1Outputting high level, sending out a detonation fault alarm signal, and automatically starting a self-destruction control circuit; g1When the output low level is high, the instruction of 'detonation' is executed normally;
the singlechip sends a discharging instruction, if the capacitor C is charged1Undischarged, "discharged" fault signal g2Outputting high level and sending out discharge fault alarm signal; g2When the output low level indicates that the 'discharging' instruction is executed normally;
the singlechip sends out a self-destruction instruction, and the enhanced NMOS tube T3Conducting, short-circuiting the +3.3V power supply of the singlechip, and self-destroying the electronic detonator; otherwise "self-destruction" fault signal g3And outputting high level and sending out a self-destruction fault alarm signal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115014136A (en) * | 2022-04-19 | 2022-09-06 | 华东光电集成器件研究所 | Digital detonator ignition bridge wire fault detection circuit and detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115014136A (en) * | 2022-04-19 | 2022-09-06 | 华东光电集成器件研究所 | Digital detonator ignition bridge wire fault detection circuit and detection method |
| CN115014136B (en) * | 2022-04-19 | 2023-10-20 | 华东光电集成器件研究所 | Digital detonator ignition bridge wire fault detection circuit and detection method |
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