Detection and diagnosis device for detonation controller of digital electronic detonator

Abstract

The invention discloses a detection and diagnosis device for a detonation controller of a digital electronic detonator, which relates to the technical field of detonation controllers and comprises a micro-control module, before detonation, a switch detection module is controlled to carry out turn-on delay detection and working current change rate detection on a power tube of a charging unit in a detonation controller module; the state judgment module detects the turn-on delay time of the power tube, carries out fault judgment, detects whether the turn-on delay time of the power tube in periodic work has a large difference value or not, and can also control the switch detection module to carry out turn-on delay detection on the power tube of the detonation unit in the detonation controller module through the micro-control module. And the matching state judgment module detects the turn-on delay time of the power tube and carries out fault judgment. According to the detection and diagnosis device for the detonation controller of the digital electronic detonator, stable DC-DC pre-detection work of a charging unit can be completed, stable pre-detection work of a power tube of a detonation unit can be completed, and the detection and diagnosis efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of detonation controller technology, specifically a digital electronic detonator detonation controller testing and diagnostic device. Background Technology

[0002] The digital electronic detonator initiation controller is a core device specifically designed for controlling and managing digital electronic detonators. It consists of a main control unit, a charging unit, and an initiation unit. The charging unit can employ a flyback power supply and an energy storage capacitor. It performs high-voltage DC-DC conversion by driving a field-effect transistor via PWM, and the energy is stored in the energy storage capacitor. The main control unit then controls the operating state of the field-effect transistor in the initiation unit to control the energy storage capacitor to discharge the initiation unit, thereby completing the initiation control. To improve the accuracy of the digital electronic detonator initiation controller, the charging voltage, charging current, and charging time are detected. However, it is not possible to pre-assess the operating state of the charging unit and the initiation unit within the initiation controller, which poses certain safety hazards and therefore requires improvement. Summary of the Invention

[0003] This invention provides a digital electronic detonator detonation controller detection and diagnostic device to solve the problems mentioned in the background art.

[0004] According to an embodiment of the present invention, a digital electronic detonator detonation controller detection and diagnosis device is provided, comprising: a detonation controller module, used to control a flyback switching power supply device to perform flyback DC-DC regulation processing on the input DC power through a first power transistor, store energy and discharge it, and perform detonation control through a second power transistor;

[0005] The switch detection module, connected to the detonation controller module, is used to provide the first detection power to the first power transistor and perform turn-on delay detection and signal clamping processing, and output the first detection signal; and to provide the second detection power to the second power transistor and perform turn-on delay detection and signal clamping processing, and output the second detection signal.

[0006] The current detection module, connected to the detonation controller module, is used to sample, amplify, and differentiate the current of the first power transistor, output the third detection signal, and detect the rate of change of the current of the sampled signal.

[0007] The status judgment module, connected to the switch detection module and the microcontroller module, is used to output a first judgment signal when the first detection signal is greater than a set first end threshold, and output a first fault signal when it is greater than a set first fault threshold. When the second detection signal is greater than a set second end threshold, it outputs a second judgment signal and outputs a second fault signal when it is greater than a set second fault threshold. When the microcontroller module drives the first power transistor for the first time, it performs real-time energy storage and maintains the stored energy when it outputs the first judgment signal. When the microcontroller module drives the first power transistor for the second time and outputs the first judgment signal, it calculates the difference and performs absolute value processing between the real-time stored energy voltage and the maintained energy voltage and outputs the difference signal. When the difference signal is greater than the error threshold, it outputs a third fault signal.

[0008] The microcontroller module, connected to the detonation controller module, current detection module, and switch detection module, is used to control the switch detection module to provide first detection power and drive the first power transistor to periodically turn on and off when the detonation controller module is not performing DC-DC regulation and the state of the first power transistor needs to be detected. The control state judgment module sets a first end threshold and a first fault threshold, diagnoses the turn-on delay time of the first power transistor through the received first judgment signal, performs energy storage and signal holding processing, and receives a first fault signal, a third detection signal, and a difference signal. When the state of the second power transistor needs to be detected, the control switch detection module provides second detection power and drives the second power transistor to turn on once. The control state judgment module sets a second end threshold and a second fault threshold, receives a second judgment signal and diagnoses the turn-on delay time of the second power transistor, and receives a second fault signal.

[0009] As a further embodiment of the present invention: the detonation controller module includes a battery pack, a first capacitor, a first resistor, a first thyristor, a first power transistor, a flyback switching power supply device, a first diode, an igniter, an eighth resistor, a second thyristor, a second power transistor, a second diode, and a third diode; the microcontroller module includes a first controller;

[0010] Preferably, the first end of the battery pack is connected to one end of the first capacitor and the first input end of the flyback switching power supply device, and is connected to the control end of the first thyristor through the first resistor. The cathode of the first thyristor is connected to the other end of the first capacitor, the second end of the battery pack, and the ground. The second input end of the flyback switching device is connected to the drain of the first power transistor. The gate of the first power transistor is connected to the cathode of the second diode. The anode of the second diode is connected to the IO1 end of the first controller. The first output end of the flyback switching power supply device is connected to the anode of the first diode and is connected to the control end of the second thyristor through the eighth resistor. The cathode of the second thyristor is connected to the second output end of the flyback switching power supply device. The anode of the second thyristor is connected to the source of the second power transistor. The drain of the second power transistor is connected to one end of the igniter. The other end of the igniter is connected to the cathode of the first diode. The gate of the second power transistor is connected to the cathode of the third diode. The anode of the third diode is connected to the IO2 end of the first controller.

[0011] As a further embodiment of the present invention: the current detection module includes a second resistor, a third resistor, a first operational amplifier, a second operational amplifier, a third operational amplifier, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, and a second capacitor;

[0012] Preferably, the inverter of the second operational amplifier is connected to the source of the first power transistor and connected to the anode of the first thyristor through the second resistor. The non-inverting input of the second operational amplifier is connected to one end of the third resistor and connected to the output of the second operational amplifier and one end of the fifth resistor through the fourth resistor. The other end of the fifth resistor is connected to the inverting input of the third operational amplifier and connected to the output of the first operational amplifier and one end of the second capacitor through the sixth resistor. The other end of the second capacitor is connected to the inverter of the first operational amplifier and connected to the output of the third operational amplifier and the IO3 terminal of the first controller through the seventh resistor. The non-inverting input of the first operational amplifier, the non-inverting input of the third operational amplifier, and the other end of the third resistor are all grounded.

[0013] As a further embodiment of the present invention: the switch detection module includes a third power transistor, a fourth power transistor, a first voltage regulator, a second voltage regulator, a first power supply interface, and a second power supply interface;

[0014] Preferably, the drains of the third power transistor and the fourth power transistor are connected to the second voltage regulator and the first voltage regulator, respectively; the sources of the third power transistor and the fourth power transistor are connected to the input terminal of the second power supply interface and the input terminal of the first power supply interface, respectively; the output terminal of the first power supply interface and the output terminal of the second power supply interface are connected to the drains of the second power transistor and the first power transistor, respectively; and the gates of the third power transistor and the fourth power transistor are connected to the IO2 terminal and the IO1 terminal of the first controller, respectively.

[0015] As a further embodiment of the present invention: the switch detection module further includes a first detection interface, a second detection interface, a first analog switch, a first inductor, a ninth resistor, a third capacitor, a third voltage regulator, a sixth diode, and a fourth diode;

[0016] Preferably, the input terminal of the first detection interface is connected to the anode of the first thyristor, the input terminal of the second detection interface is connected to the source of the second power transistor, the output terminals of the first and second detection interfaces are respectively connected to the eighth and third terminals of the first analog switch, the sixth and fifth terminals of the first analog switch are respectively connected to the IO2 and IO1 terminals of the first controller, the fourth and ninth terminals of the first analog switch are both connected to one end of the first inductor and connected to the first terminal of the third capacitor, the anode of the sixth diode, the cathode of the fourth diode, and the state judgment module through the ninth resistor, the other end of the first inductor is connected to the second terminal of the third capacitor and the ground terminal, the anode of the fourth diode is grounded, and the cathode of the sixth diode is connected to the third voltage regulator.

[0017] As a further embodiment of the present invention: the state determination module includes a first reference power supply, a second reference power supply, a third reference power supply, a fourth reference power supply, a first switching transistor, a second switching transistor, a third switching transistor, a fourth switching transistor, a first comparator, and a second comparator.

[0018] Preferably, the collectors of the first, second, third, and fourth switching transistors are connected to the first, second, third, and fourth reference power supplies, respectively. The emitter of the first switching transistor is connected to the emitter of the second switching transistor and the inverting input of the first comparator. The non-inverting input of the first comparator is connected to the non-inverting input of the second comparator and the first terminal of the third capacitor. The emitter of the third switching transistor is connected to the emitter of the fourth switching transistor and the inverting input of the second comparator. The base of the first switching transistor is connected to the base of the fourth switching transistor and the IO1 terminal of the first controller. The base of the second switching transistor is connected to the base of the third switching transistor and the IO2 terminal of the first controller. The output terminals of the first and second comparators are connected to the IO6 and IO7 terminals of the first controller, respectively.

[0019] As a further embodiment of the present invention: the state determination module further includes a first logic unit, a first inverter, a fifth switching transistor, a fourth voltage regulator, a fourth capacitor, a sample and hold device, a tenth resistor, a fifth diode, and a subtraction device;

[0020] Preferably, the B terminal of the first logic unit is connected to the output terminal of the first inverter, the input terminal of the first inverter is connected to the output terminal of the first comparator, the A terminal of the first logic unit is connected to the IO1 terminal of the first controller, the Y terminal of the first logic unit is connected to the base of the fifth switching transistor, the collector of the fifth switching transistor is connected to the fourth voltage regulator, the emitter of the fifth switching transistor is connected to the input terminal of the sample-and-hold device and the first input terminal of the subtraction device and grounded through the fourth capacitor, the control terminal of the sample-and-hold device is connected to the IO4 terminal of the first controller, the output terminal of the sample-and-hold device is connected to the second input terminal of the subtraction device, the output terminal of the subtraction device is connected to the cathode of the fifth diode through the tenth resistor, and the anode of the fifth diode is connected to the IO5 terminal of the first controller.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The digital electronic detonator detonator initiation controller detection and diagnosis device of the present invention can, before detonation, control the switch detection module to perform turn-on delay detection and operating current change rate detection on the power transistor of the charging unit in the detonation controller module. In conjunction with the status judgment module, the turn-on delay time of the power transistor is detected and fault judgment is performed. It also detects whether there is a large difference in the turn-on delay time when the power transistor is working periodically, thus completing the stable DC-DC pre-detection of the charging unit. Furthermore, the microcontroller module can control the switch detection module to perform turn-on delay detection on the power transistor of the detonation unit in the detonation controller module. In conjunction with the status judgment module, the turn-on delay time of the power transistor is detected and fault judgment is performed, thus completing the stable pre-detection of the power transistor of the detonation unit, thereby improving the detection and diagnosis efficiency of the detonation controller. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic block diagram of a digital electronic detonator detonation controller detection and diagnosis device provided in an embodiment of the present invention.

[0024] Figure 2 The circuit diagram of a digital electronic detonator detonation controller detection and diagnosis device provided in an embodiment of the present invention.

[0025] Figure 3 This is a first circuit diagram of a state determination module provided in an embodiment of the present invention.

[0026] Figure 4 This is a second circuit diagram of the state determination module provided in an embodiment of the present invention. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In one embodiment, see Figure 1 A digital electronic detonator detonation controller detection and diagnosis device includes: a detonation controller module 1, which controls a flyback switching power supply device to perform flyback DC-DC regulation processing on the input DC power through a first power transistor Q1 and outputs high-voltage power, stores high-voltage power and performs detonation control through a second power transistor Q2;

[0029] The switch detection module 3 is connected to the detonation controller module 1. It is used to provide the first detection power to the first power transistor Q1 and perform turn-on delay detection and signal clamping processing, and output the first detection signal. It also provides the second detection power to the second power transistor Q2 and performs turn-on delay detection and signal clamping processing, and outputs the second detection signal.

[0030] The current detection module 4 is connected to the detonation controller module 1 and is used to sample, amplify and differentiate the current of the first power transistor Q1, output the third detection signal and detect the rate of change of the current of the sampled signal.

[0031] The status judgment module 5, connected to the switch detection module 3 and the microcontroller module 2, is used to output a first judgment signal when the first detection signal is greater than the set first end threshold, and output a first fault signal when it is greater than the set first fault threshold. When the second detection signal is greater than the set second end threshold, it outputs a second judgment signal and outputs a second fault signal when it is greater than the set second fault threshold. When the microcontroller module 2 drives the first power transistor Q1 for the first time, it performs real-time energy storage and maintains the stored energy when it outputs the first judgment signal. When the microcontroller module 2 drives the first power transistor Q1 for the second time and outputs the first judgment signal, it calculates the difference and performs absolute value processing between the real-time stored energy voltage and the maintained energy voltage and outputs the difference signal. When the difference signal is greater than the error threshold, it outputs a third fault signal.

[0032] The microcontroller module 2, connected to the detonation controller module 1, the current detection module 4, and the switch detection module 3, is used to control the switch detection module 3 to provide first detection power and drive the first power transistor Q1 to periodically turn on and off when the detonation controller module 1 is not performing DC-DC regulation and the state of the first power transistor Q1 needs to be detected. The control state judgment module 5 sets a first end threshold and a first fault threshold, diagnoses the turn-on delay time of the first power transistor Q1 through the received first judgment signal, performs energy storage and signal holding processing, and receives a first fault signal, a third detection signal, and a difference signal. When the state of the second power transistor Q2 needs to be detected, the control switch detection module 3 provides second detection power and drives the second power transistor Q2 to turn on once. The control state judgment module 5 sets a second end threshold and a second fault threshold, receives a second judgment signal and diagnoses the turn-on delay time of the second power transistor Q2, and receives a second fault signal.

[0033] In a specific embodiment, the aforementioned detonation controller module 1 can be a detonation controller circuit composed of a battery pack, a field-effect transistor, an igniter, and a flyback switching power supply. It can be connected to DC power and subjected to flyback DC-DC regulation, storing high-voltage energy and releasing it when detonation control is required, with the igniter then initiating the detonation. The aforementioned microcontroller module 2 can be a microcontroller circuit composed of a single-chip microcomputer, integrating an arithmetic logic unit (ALU), a controller, a memory, and input / output devices, etc., to realize functions such as signal processing, data storage, module control, and timing control. The aforementioned switch detection module 3 can be a detection interface... The switch detection circuit, composed of a power supply interface, a field-effect transistor (FET), an analog switch, an inductor, and a capacitor, can be connected to the drain of the FET via the power supply interface to provide the necessary detection power to the detonation controller module 1. It is then connected to a power transistor or resistor in the detonation controller module 1 via the detection interface to complete the switch status detection of the detonation controller module 1, and performs current detection processing via the inductor. The aforementioned current detection module 4 can be a current detection circuit composed of a resistor, an operational amplifier, and another resistor. It can perform current sampling and signal amplification processing, converting the processed signal into a differential signal, i.e., the third detection signal, and then... The current change rate detection is performed. The aforementioned state judgment module 5 can be a state judgment circuit composed of a comparator, a reference power supply, a logic unit, a sample-and-hold device, a subtraction device, etc. It can perform turn-on delay detection and short-circuit fault detection on the first power transistor Q1 in the detonation control module, i.e., the power transistor of the charging unit, through a set first end threshold and a first fault threshold. The first fault threshold is greater than the first end threshold, and the first end threshold is used as the basis for ending the turn-on delay time of the first power transistor Q1. At the same time, according to the periodic state of the first power transistor Q1 driven by the microcontroller module 2, the system records the current change rate through energy storage, sample-and-hold, subtraction, and absolute value processing. The difference between the turn-on delay time of the first power transistor Q1 during the first drive and the turn-on delay time of the first power transistor Q1 during the second drive is used to determine whether the difference is within the normal error range by using a set error threshold. Then, it is detected whether there is a large difference in the turn-on delay time of the first power transistor Q1 under the two drives. Furthermore, the turn-on delay detection and short-circuit fault detection of the second power transistor Q2 in the detonation control module, i.e. the power transistor of the detonation unit, can be performed by using a set second end threshold and a second fault threshold. The second fault threshold is greater than the second end threshold and the second end threshold is used as the basis for ending the turn-on delay time of the second power transistor Q2.

[0034] In this embodiment, please refer to Figure 2 , Figure 3 and Figure 4The detonation controller module 1 includes a battery pack, a first capacitor C1, a first resistor R1, a first thyristor S1, a first power transistor Q1, a flyback switching power supply device, a first diode D1, an igniter, an eighth resistor R8, a second thyristor S2, a second power transistor Q2, a second diode D2, and a third diode D3; the microcontroller module 2 includes a first controller U1.

[0035] Specifically, the first end of the battery pack is connected to one end of the first capacitor C1 and the first input end of the flyback switching power supply device, and is connected to the control end of the first thyristor S1 through the first resistor R1. The cathode of the first thyristor S1 is connected to the other end of the first capacitor C1, the second end of the battery pack, and the ground. The second input end of the flyback switching device is connected to the drain of the first power transistor Q1. The gate of the first power transistor Q1 is connected to the cathode of the second diode D2. The anode of the second diode D2 is connected to the IO1 end of the first controller U1. The first output end of the flyback switching power supply device is connected to the anode of the first diode D1 and is connected to the control end of the second thyristor S2 through the eighth resistor R8. The cathode of the second thyristor S2 is connected to the second output end of the flyback switching power supply device. The anode of the second thyristor S2 is connected to the source of the second power transistor Q2. The drain of the second power transistor Q2 is connected to one end of the igniter. The other end of the igniter is connected to the cathode of the first diode D1. The gate of the second power transistor Q2 is connected to the cathode of the third diode D3. The anode of the third diode D3 is connected to the IO2 end of the first controller U1.

[0036] In a specific embodiment, both the first thyristor S1 and the second thyristor S2 can be unidirectional thyristors; the flyback switching power supply device can be composed of a PWM drive device, a buffer circuit, a transformer, a rectifier filter, and a feedback circuit composed of optocouplers to perform DC-DC regulation; both the first power transistor Q1 and the second power transistor Q2 can be N-channel MOSFETs as the power transistor detection objects, wherein the first power transistor Q1 serves as a high-speed electronic switch of the flyback switching power supply device to control the flyback switching power supply device to perform high-frequency DC-DC voltage regulation, and the second power transistor Q2 controls the igniter to perform detonation; the first controller U1 can be an STM32 microcontroller.

[0037] Furthermore, the current detection module 4 includes a second resistor R2, a third resistor R3, a first operational amplifier OP1, a second operational amplifier OP2, a third operational amplifier OP3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and a second capacitor C2.

[0038] Specifically, the inverter of the second operational amplifier OP2 is connected to the source of the first power transistor Q1 and to the anode of the first thyristor S1 through the second resistor R2. The non-inverting input of the second operational amplifier OP2 is connected to one end of the third resistor R3 and to the output of the second operational amplifier OP2 and one end of the fifth resistor R5 through the fourth resistor R4. The other end of the fifth resistor R5 is connected to the inverting input of the third operational amplifier OP3 and to the output of the first operational amplifier OP1 and one end of the second capacitor C2 through the sixth resistor R6. The other end of the second capacitor C2 is connected to the inverter of the first operational amplifier OP1 and to the output of the third operational amplifier OP3 and the IO3 terminal of the first controller U1 through the seventh resistor R7. The non-inverting inputs of the first operational amplifier OP1, the non-inverting inputs of the third operational amplifier OP3, and the other end of the third resistor R3 are all grounded.

[0039] In a specific embodiment, the first operational amplifier OP1, the second operational amplifier OP2, and the third operational amplifier OP3 can all be selected as OP07 operational amplifiers. The first operational amplifier OP1, together with the third resistor R3 and the fourth resistor R4, performs amplification processing. The second operational amplifier OP2 and the third operational amplifier OP3, together with the fifth resistor R5, the sixth resistor R6, the seventh resistor R7, and the second capacitor C2, convert the input signal into a differential signal.

[0040] Furthermore, the switch detection module 3 includes a third power transistor Q3, a fourth power transistor Q4, a first voltage regulator VCC1, a second voltage regulator VCC2, a first power supply interface, and a second power supply interface;

[0041] Specifically, the drain of the third power transistor Q3 and the drain of the fourth power transistor Q4 are connected to the second voltage regulator VCC2 and the first voltage regulator VCC1, respectively. The source of the third power transistor Q3 and the source of the fourth power transistor Q4 are connected to the input terminal of the second power supply interface and the input terminal of the first power supply interface, respectively. The output terminal of the first power supply interface and the output terminal of the second power supply interface are connected to the drain of the second power transistor Q2 and the drain of the first power transistor Q1, respectively. The gate of the third power transistor Q3 and the gate of the fourth power transistor Q4 are connected to the IO2 terminal and the IO1 terminal of the first controller U1, respectively.

[0042] In a specific embodiment, the first power supply interface and the second power supply interface can be connected to the checkpoint of the detonation controller module 1 by means of a cable; the third power transistor Q3 and the fourth power transistor Q4 can both be N-channel field-effect transistors.

[0043] Furthermore, the switch detection module 3 also includes a first detection interface, a second detection interface, a first analog switch U2, a first inductor L1, a ninth resistor R9, a third capacitor C3, a third voltage regulator VCC3, a sixth diode D6, and a fourth diode D4;

[0044] Specifically, the input terminal of the first detection interface is connected to the anode of the first thyristor S1, the input terminal of the second detection interface is connected to the source of the second power transistor Q2, the output terminals of the first and second detection interfaces are respectively connected to the eighth and third terminals of the first analog switch U2, the sixth and fifth terminals of the first analog switch U2 are respectively connected to the IO2 and IO1 terminals of the first controller U1, the fourth and ninth terminals of the first analog switch U2 are both connected to one end of the first inductor L1 and connected to the first end of the third capacitor C3, the anode of the sixth diode D6, the cathode of the fourth diode D4 and the state judgment module 5 through the ninth resistor R9, the other end of the first inductor L1 is connected to the second end of the third capacitor C3 and the ground terminal, the anode of the fourth diode D4 is grounded, and the cathode of the sixth diode D6 is connected to the third voltage regulator VCC3.

[0045] In a specific embodiment, the first detection interface and the second detection interface can be connected to the checkpoint of the detonation controller module 1 by means of a cable; the first analog switch U2 can be a CD4066 chip; the first inductor L1, the ninth resistor R9, the third capacitor C3, the third voltage regulator VCC3, the sixth diode D6 and the fourth diode D4 are used for inductor current sampling and signal clamping.

[0046] Furthermore, the state determination module 5 includes a first reference power supply VF1, a second reference power supply VF2, a third reference power supply VF3, a fourth reference power supply VF4, a first switch V1, a second switch V2, a third switch V3, a fourth switch V4, a first comparator A1, and a second comparator A2.

[0047] Specifically, the collectors of the first switch V1, the second switch V2, the third switch V3, and the fourth switch V4 are respectively connected to the first reference power supply VF1, the second reference power supply VF2, the third reference power supply VF3, and the fourth reference power supply VF4. The emitter of the first switch V1 is connected to the emitter of the second switch V2 and the inverting input of the first comparator A1. The non-inverting input of the first comparator A1 is connected to the non-inverting input of the second comparator A2 and the first terminal of the third capacitor C3. The emitter of the third switch V3 is connected to the emitter of the fourth switch V4 and the inverting input of the second comparator A2. The base of the first switch V1 is connected to the base of the fourth switch V4 and the IO1 terminal of the first controller U1. The base of the second switch V2 is connected to the base of the third switch V3 and the IO2 terminal of the first controller U1. The output terminals of the first comparator A1 and the second comparator A2 are respectively connected to the IO6 and IO7 terminals of the first controller U1.

[0048] In a specific embodiment, the first reference power supply VF1 and the fourth reference power supply VF4 can respectively provide a first termination threshold and a first fault threshold; the second reference power supply VF2 and the third reference power supply VF3 can respectively provide a second termination threshold and a second fault threshold; the first comparator A1 and the second comparator A2 can both be LM358 comparators; the first switch V1, the second switch V2, the third switch V3 and the fourth switch V4 can all be NPN transistors.

[0049] Furthermore, the state judgment module 5 also includes a first logic unit J1, a first inverter J2, a fifth switching transistor V5, a fourth voltage regulator VCC4, a fourth capacitor C4, a sample and hold device, a tenth resistor R10, a fifth diode D5, and a subtraction device.

[0050] Specifically, the B terminal of the first logic unit J1 is connected to the output terminal of the first inverter J2, the input terminal of the first inverter J2 is connected to the output terminal of the first comparator A1, the A terminal of the first logic unit J1 is connected to the IO1 terminal of the first controller U1, the Y terminal of the first logic unit J1 is connected to the base of the fifth switching transistor V5, the collector of the fifth switching transistor V5 is connected to the fourth voltage regulator VCC4, the emitter of the fifth switching transistor V5 is connected to the input terminal of the sample-and-hold device and the first input terminal of the subtraction device and grounded through the fourth capacitor C4, the control terminal of the sample-and-hold device is connected to the IO4 terminal of the first controller U1, the output terminal of the sample-and-hold device is connected to the second input terminal of the subtraction device, the output terminal of the subtraction device is connected to the cathode of the fifth diode D5 through the tenth resistor R10, and the anode of the fifth diode D5 is connected to the IO5 terminal of the first controller U1.

[0051] In specific implementation, the first logic unit J1 can be an AND gate, and the first inverter J2 can be a NOT gate; the fifth switch V5 can be an NPN transistor; the fourth capacitor C4 stores energy; the sample-and-hold device can be composed of a switch, an operational amplifier, a capacitor, and a resistor, which samples and processes the voltage signal of the electrical energy stored in the fourth capacitor C4 in real time, and performs signal holding processing after receiving the high-level signal output from the IO4 terminal of the first controller U1; the subtraction device can be composed of a subtractor composed of an operational amplifier and a resistor, and an absolute value device composed of an operational amplifier, a diode, a capacitor, and a resistor, which performs subtraction and absolute value processing on the input signal.

[0052] In this embodiment of a digital electronic detonator initiation controller detection and diagnostic device, when the battery pack is not powered and it is necessary to detect the first power transistor Q1, both the first thyristor S1 and the second thyristor S2 are cut off. The IO1 terminal of the first controller U1 provides a high level, the fourth power transistor Q4 is turned on, and the eighth and ninth terminals of the first analog switch U2 are turned on. This allows the first detection power provided by the first regulated power source VCC1 to be transmitted to the drain of the connected first power transistor Q1 through the fourth power transistor Q4 and the first power supply interface. Since the IO1 terminal of the first controller U1 drives the first power transistor Q1 to turn on, and the first controller U1 starts timing, it is connected to the anode of the first thyristor S1 through the first detection interface, in conjunction with the first inductor L1 and the ninth terminal. Resistor R9, third capacitor C3, third voltage regulator VCC3, sixth diode D6, and fourth diode D4 detect the conduction state of the first power transistor Q1 and perform turn-on delay detection and signal clamping processing, outputting a first detection signal. Simultaneously, the IO1 terminal of the first controller U1 triggers the first switch V1 and the fourth switch V4 to conduct, causing the first detection signal to be compared with a first end threshold provided by the first reference power supply VF1. When the first detection signal exceeds the first end threshold, it indicates that the first power transistor Q1 has completed conduction. The first comparator A1 outputs a high level, i.e., the first judgment signal, which is received by the IO6 terminal of the first controller U1. The first controller U1 stops timing and then detects the turn-on delay of the first power transistor Q1 at this time. After a delay, the switching state of the first power transistor Q1 is determined. If the first detection signal is greater than the first fault threshold, the second comparator A2 outputs a first fault signal, indicating that the first power transistor Q1 is short-circuited. In addition, when the IO1 terminal of the first controller U1 outputs a high level, the A terminal of the first logic unit J1 becomes high. When the first comparator A1 does not output the first judgment signal, the second inverter outputs a high level, causing the Y terminal of the first logic unit J1 to control the fifth switch V5 to conduct. The fourth capacitor C4 begins to store the electrical energy provided by the fourth voltage regulator VCC4. The voltage of the fourth capacitor C4 will gradually rise when the fifth switch V5 is turned on. Simultaneously, the sample-and-hold device will synchronously sample the voltage of the fourth capacitor C4, ensuring that the sample... When the voltage output of the sampling and holding device is equal to the voltage of the fourth capacitor C4, the first comparator A1 outputs the first judgment signal, the fifth switch V5 is turned off, the fourth capacitor C4 stops storing energy, and the IO4 terminal of the first controller U1 outputs a high level, controlling the sampling and holding device to stop sampling and maintain the voltage. This ensures that when the first controller U1's IO1 terminal drives the first power transistor Q1 again, the voltage output of the sampling and holding device will be subtracted from the voltage of the fourth capacitor C4 using a subtraction device, and the absolute value will be processed to output a difference signal. If the difference signal is greater than the error threshold set by the tenth resistor R10 and the fifth diode D5, it indicates that the difference in the turn-on delay time between the two driving states of the first power transistor Q1 exceeds the normal range.The fifth diode D5 is broken down and provides a third fault signal to the IO5 terminal of the first controller U1. When the first power transistor Q1 is turned on, the second resistor R2 can sample the current of the first power transistor Q1. The sampled signal is amplified by the third resistor R3, the fourth resistor R4, and the second operational amplifier OP2. The amplified signal is converted into a differential signal, i.e., the third detection signal, by the fifth resistor R5, the sixth resistor R6, the seventh resistor R7, the second capacitor C2, the third operational amplifier OP3, and the first operational amplifier OP1. The IO3 terminal of the first controller U1 receives the signal and detects the rate of change of the current of the first power transistor Q1 when it is working according to the potential of the third detection signal. When it is necessary to detect the state of the second power transistor Q2, the IO1 terminal of the first controller U1 stops working, and the IO2 terminal of the first controller U1 controls the third power transistor Q3 and the second power transistor Q2 to turn on, controlling the third and fourth terminals of the first analog switch U2 to turn on. The second detection interface is connected to the source of the second power transistor Q2. The voltage source VCC2 supplies power to the drain of the second power transistor Q2 through the third power transistor Q3 and the second power supply interface, enabling turn-on delay detection and signal clamping of the second power transistor Q2, and outputting a second detection signal. Similarly, the IO2 terminal of the first controller U1 controls the second switch V2 and the third switch V3 to conduct, so that the first comparator A1 compares the voltage of the second detection signal and the voltage of the second end threshold to detect the turn-on delay time of the second power transistor Q2, and the second comparator A2 compares the voltage of the second detection signal and the voltage of the second fault threshold to detect whether the second power transistor Q2 is short-circuited. During battery power supply, the current detection module 4 can also detect the rate of change of the operating current of the first power transistor Q1 to monitor the operating status of the first power transistor Q1 in real time. After the first power transistor Q1 and the second power transistor Q2 are normal, the first power transistor Q1 controls the flyback switching power supply device for DC-DC regulation, and the second power transistor Q2 controls the igniter to control the detonation control.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A detection and diagnostic device for a digital electronic detonator detonation controller, characterized in that, The circuit includes: The detonation controller module is used to control the flyback switching power supply device through the first power transistor to perform flyback DC-DC regulation on the input DC power, store energy and discharge it, and control the detonation through the second power transistor. The switch detection module, connected to the detonation controller module, is used to provide the first detection power to the first power transistor and perform turn-on delay detection and signal clamping processing, and output the first detection signal; and to provide the second detection power to the second power transistor and perform turn-on delay detection and signal clamping processing, and output the second detection signal. The current detection module, connected to the detonation controller module, is used to sample, amplify, and differentiate the current of the first power transistor, output the third detection signal, and detect the rate of change of the current of the sampled signal. The status judgment module, connected to the switch detection module and the microcontroller module, is used to output a first judgment signal when the first detection signal is greater than a set first end threshold, and output a first fault signal when it is greater than a set first fault threshold. When the second detection signal is greater than a set second end threshold, it outputs a second judgment signal and outputs a second fault signal when it is greater than a set second fault threshold. When the microcontroller module drives the first power transistor for the first time, it performs real-time energy storage and maintains the stored energy when it outputs the first judgment signal. When the microcontroller module drives the first power transistor for the second time and outputs the first judgment signal, it calculates the difference and performs absolute value processing between the real-time stored energy voltage and the maintained energy voltage and outputs the difference signal. When the difference signal is greater than the error threshold, it outputs a third fault signal. The microcontroller module, connected to the detonation controller module, current detection module, and switch detection module, is used to control the switch detection module to provide first detection power and drive the first power transistor to periodically turn on and off when the detonation controller module is not performing DC-DC regulation and the state of the first power transistor needs to be detected. The control state judgment module sets a first end threshold and a first fault threshold, diagnoses the turn-on delay time of the first power transistor through the received first judgment signal, performs energy storage and signal holding processing, and receives a first fault signal, a third detection signal, and a difference signal. When the state of the second power transistor needs to be detected, the control switch detection module provides second detection power and drives the second power transistor to turn on once. The control state judgment module sets a second end threshold and a second fault threshold, receives a second judgment signal and diagnoses the turn-on delay time of the second power transistor, and receives a second fault signal.

2. The digital electronic detonator detonation controller detection and diagnostic device according to claim 1, characterized in that, The detonation controller module includes a battery pack, a first capacitor, a first resistor, a first thyristor, a first power transistor, a flyback switching power supply, a first diode, an igniter, an eighth resistor, a second thyristor, a second power transistor, a second diode, and a third diode; the microcontroller module includes a first controller; The first end of the battery pack is connected to one end of the first capacitor and the first input end of the flyback switching power supply device, and is connected to the control end of the first thyristor through the first resistor. The cathode of the first thyristor is connected to the other end of the first capacitor, the second end of the battery pack, and the ground. The second input end of the flyback switching device is connected to the drain of the first power transistor. The gate of the first power transistor is connected to the cathode of the second diode. The anode of the second diode is connected to the IO1 end of the first controller. The first output end of the flyback switching power supply device is connected to the anode of the first diode and is connected to the control end of the second thyristor through the eighth resistor. The cathode of the second thyristor is connected to the second output end of the flyback switching power supply device. The anode of the second thyristor is connected to the source of the second power transistor. The drain of the second power transistor is connected to one end of the igniter. The other end of the igniter is connected to the cathode of the first diode. The gate of the second power transistor is connected to the cathode of the third diode. The anode of the third diode is connected to the IO2 end of the first controller.

3. The digital electronic detonator initiation controller detection and diagnostic device according to claim 2, characterized in that, The current detection module includes a second resistor, a third resistor, a first operational amplifier, a second operational amplifier, a third operational amplifier, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, and a second capacitor; The inverter of the second operational amplifier is connected to the source of the first power transistor and to the anode of the first thyristor through the second resistor. The non-inverting input of the second operational amplifier is connected to one end of the third resistor and to the output of the second operational amplifier and one end of the fifth resistor through the fourth resistor. The other end of the fifth resistor is connected to the inverting input of the third operational amplifier and to the output of the first operational amplifier and one end of the second capacitor through the sixth resistor. The other end of the second capacitor is connected to the inverter of the first operational amplifier and to the output of the third operational amplifier and the IO3 terminal of the first controller through the seventh resistor. The non-inverting input of the first operational amplifier, the non-inverting input of the third operational amplifier, and the other end of the third resistor are all grounded.

4. The digital electronic detonator initiation controller detection and diagnostic device according to claim 2, characterized in that, The switch detection module includes a third power transistor, a fourth power transistor, a first voltage regulator, a second voltage regulator, a first power supply interface, and a second power supply interface; The drains of the third and fourth power transistors are connected to the second and first voltage regulators, respectively. The sources of the third and fourth power transistors are connected to the input terminals of the second and first power supply interfaces, respectively. The output terminals of the first and second power supply interfaces are connected to the drains of the second and first power transistors, respectively. The gates of the third and fourth power transistors are connected to the IO2 and IO1 terminals of the first controller, respectively.

5. The digital electronic detonator initiation controller detection and diagnostic device according to claim 4, characterized in that, The switch detection module further includes a first detection interface, a second detection interface, a first analog switch, a first inductor, a ninth resistor, a third capacitor, a third voltage regulator, a sixth diode, and a fourth diode; The input terminal of the first detection interface is connected to the anode of the first thyristor, and the input terminal of the second detection interface is connected to the source of the second power transistor. The output terminals of the first and second detection interfaces are respectively connected to the eighth and third terminals of the first analog switch. The sixth and fifth terminals of the first analog switch are respectively connected to the IO2 and IO1 terminals of the first controller. The fourth and ninth terminals of the first analog switch are both connected to one end of the first inductor and connected to the first terminal of the third capacitor, the anode of the sixth diode, the cathode of the fourth diode, and the state judgment module through the ninth resistor. The other end of the first inductor is connected to the second terminal of the third capacitor and the ground terminal. The anode of the fourth diode is grounded, and the cathode of the sixth diode is connected to the third voltage regulator.

6. The digital electronic detonator initiation controller detection and diagnostic device according to claim 5, characterized in that, The state determination module includes a first reference power supply, a second reference power supply, a third reference power supply, a fourth reference power supply, a first switching transistor, a second switching transistor, a third switching transistor, a fourth switching transistor, a first comparator, and a second comparator. The collectors of the first, second, third, and fourth switching transistors are respectively connected to the first, second, third, and fourth reference power supplies. The emitter of the first switching transistor is connected to the emitter of the second switching transistor and the inverting input of the first comparator. The non-inverting input of the first comparator is connected to the non-inverting input of the second comparator and the first terminal of the third capacitor. The emitter of the third switching transistor is connected to the emitter of the fourth switching transistor and the inverting input of the second comparator. The base of the first switching transistor is connected to the base of the fourth switching transistor and the IO1 terminal of the first controller. The base of the second switching transistor is connected to the base of the third switching transistor and the IO2 terminal of the first controller. The output terminals of the first and second comparators are respectively connected to the IO6 and IO7 terminals of the first controller.

7. The digital electronic detonator initiation controller detection and diagnostic device according to claim 6, characterized in that, The state determination module also includes a first logic unit, a first inverter, a fifth switching transistor, a fourth voltage regulator, a fourth capacitor, a sample and hold device, a tenth resistor, a fifth diode, and a subtraction device; The B terminal of the first logic unit is connected to the output terminal of the first inverter, the input terminal of the first inverter is connected to the output terminal of the first comparator, the A terminal of the first logic unit is connected to the IO1 terminal of the first controller, the Y terminal of the first logic unit is connected to the base of the fifth switching transistor, the collector of the fifth switching transistor is connected to the fourth voltage regulator, the emitter of the fifth switching transistor is connected to the input terminal of the sample-and-hold device and the first input terminal of the subtraction device and grounded through the fourth capacitor, the control terminal of the sample-and-hold device is connected to the IO4 terminal of the first controller, the output terminal of the sample-and-hold device is connected to the second input terminal of the subtraction device, the output terminal of the subtraction device is connected to the cathode of the fifth diode through the tenth resistor, and the anode of the fifth diode is connected to the IO5 terminal of the first controller.

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