A blasting cap resistance detection device and method based on adaptive tracking technology

Abstract

The application belongs to the technical field of detonator resistance detection, and relates to a detonator resistance detection device and method based on adaptive tracking technology, which comprises a detonator, a communication module, a processor, a power module, a detonator driving module, a voltage detection module, a constant current source module, a detection driving module and a detonator. The voltage detection module comprises a parallel circuit and a voltage sampling circuit. The parallel circuit comprises a parallel resistance R1 connected in parallel with the detonator Rd. The voltage sampling circuit is arranged at one end of the detonator current output. The resistance of the detonator in the well is detected to determine whether the detonator is abnormal.

Description

Technical Field

[0001] This invention relates to the field of detonator resistance detection technology, and specifically discloses a detonator resistance detection device and method based on adaptive tracking technology. Background Technology

[0002] In oil and gas well production, detonators, as core components, play a crucial role in precisely controlling the timing of downhole operations such as perforation and fracturing. Their performance and stability directly affect wellhead safety and production efficiency. The detonator resistance value, a key parameter reflecting the integrity of its bridge wire and the connectivity of its lead wire, needs continuous monitoring before deployment and throughout the operation period. A broken bridge wire can lead to a detonator misfire, while a short circuit or resistance drift in the lead wire can cause the selective triggering switch to malfunction, both posing significant threats to safe oil and gas well production. However, existing selective triggering systems have an inherent flaw: they lack online detonator resistance monitoring, making it impossible to identify abnormal detonator conditions under complex downhole working conditions. Deploying a faulty detonator can lead to two serious consequences.

[0003] In view of this, the present invention provides a detonator resistance detection device and method based on adaptive tracking technology to detect the resistance of downhole detonators and determine whether the detonator is abnormal. Summary of the Invention

[0004] The purpose of this invention is to provide a detonator resistance detection device and method based on adaptive tracking technology, which can realize high-precision detection and anomaly identification of downhole detonator resistance, and provide key technical support for the safe operation of oil and gas well detonation switches. The specific solution is as follows: A detonator resistance detection device based on adaptive tracking technology includes a detonator, a communication module, a processor, a power supply module, a detonator drive module, a voltage detection module, a constant current source module, a detection drive module, and a detonator; the detonator provides a positive power supply terminal and a negative power supply terminal; the positive power supply terminal is connected to the communication module, the power supply module, the voltage detection module, and the detonator; the negative power supply terminal is connected to the processor, the detonator drive module, and the detection drive module; the power supply module is communicatively connected to the communication module; the communication module is communicatively connected to the power supply module and the processor; the processor is communicatively connected to the communication module, the voltage detection module, the detonator drive module, and the detection drive module; the detonator drive module is communicatively connected to the processor, the voltage detection module, the detonator, and the constant current source module; the voltage detection module is communicatively connected to the processor, the detonator, and the detonator drive module; the constant current source module is connected to the voltage detection module, the detonator drive module, the detonator, and the detection drive module; the voltage detection module includes a parallel circuit and a voltage sampling circuit; the parallel circuit includes a parallel resistor R1 connected in parallel with the detonator Rd; the voltage sampling circuit is located at one end of the detonator current output.

[0005] Furthermore, a parallel resistor R1 is provided on the parallel circuit; by connecting the parallel resistor R1 in parallel with the detonator Rd to form a parallel circuit, the parallel resistor R1 is connected in series with the switch, and various circuit states are presented by the opening and closing of the switch.

[0006] Furthermore, the voltage sampling circuit includes sampling resistors and sampling units; the sampling resistors include a first sampling resistor R7 and a second sampling resistor R9; the sampling units include a first sampling unit and a second sampling unit; the first sampling unit is connected to the current output terminal of the detonator Rd and the processor, respectively; the second sampling unit is connected to the output terminal of the first sampling resistor R7 and the input terminal of the second sampling resistor R9, respectively; the input terminal of the first sampling resistor R7 is connected to the output terminals of the first sampling unit and the detonator Rd; the output terminal of the second sampling resistor R9 is connected to the negative terminal of the power supply.

[0007] Furthermore, the first sampling unit includes an operational amplifier A1, the first port of which is connected to the processor's AD1 port and resistor R2; the other end of resistor R2 is connected to the second port of operational amplifier A1 and resistor R3; the other end of resistor R3 is connected to the negative terminal of the power supply; the third port of operational amplifier A1 is connected to resistor R4; the other end of resistor R4 is connected to the current output terminal of detonator Rd; the second sampling unit includes an operational amplifier A2, the first port of which is connected to the processor's AD2 port and resistor R5; the other end of resistor R5 is connected to the second port of operational amplifier A2 and resistor R6; the other end of resistor R6 is connected to the negative terminal of the power supply; the third port of operational amplifier A2 is connected to resistor R8; the other end of resistor R8 is connected to the current input terminal of the second sampling resistor R9.

[0008] Furthermore, in the constant current source module, one end of resistor R10 is connected to the current output terminal of detonator Rd, and the other end is connected to the source of MOSFET M1; the drain of MOSFET M1 is connected to resistor R11, and the gate is connected to the source of MOSFET M2; the other end of resistor R11 is connected to the gate of MOSFET M1 and the source of MOSFET M2; the drain of MOSFET M2 is connected to the G3 port of the processor; the gate of MOSFET M2 is connected to resistor R12; and the other end of resistor R12 is connected to the negative power supply terminal.

[0009] A detonator resistance detection method based on adaptive tracking technology, applied to the aforementioned detonator resistance detection device based on adaptive tracking technology, includes: constructing multiple detonator resistance detection circuit states by controlling the on / off state of a parallel resistor; the parallel resistor refers to a resistor connected in parallel with the detonator; determining a first total current based on the voltage across a first sampling resistor; determining multiple target detection currents based on the detonator type; adjusting the resistance values ​​of the first and second sampling resistors so that the total current sequentially reaches the target detection current; determining the detonator resistance based on the multiple target detection currents and the multiple detonator resistance detection circuit states; matching the detonator resistance with a standard resistance range to determine whether the detonator is abnormal, and obtaining a detonator status indicator.

[0010] Furthermore, based on the detonator type, multiple target detection currents are determined, including: determining the first basic parameter of the detonator based on the detonator type; the first basic parameter includes the quiescent current and the maximum allowable detection current; determining multiple target detection currents based on the quiescent current range and the maximum allowable detection current; the calculation formula for the multiple target detection currents is as follows:

[0011] ;

[0012] ;

[0013] in, Represents the set of target detection currents; This represents the detection current of the k-th target; k represents the detection current variable, which takes a value of 1-n. Indicates the maximum allowable detection current; n represents the total number of preset detection current levels; This indicates the static current of the detonator.

[0014] Furthermore, adjusting the resistance values ​​of the first sampling resistor and the second sampling resistor so that the total current sequentially reaches the target detection current includes: adjusting the first sampling resistor and updating the first total current based on the voltage across the first sampling resistor; determining whether the updated first total current reaches the target detection current; if not, continuing to adjust the first sampling resistor until the difference between the first total current and the target detection current is less than a first current threshold; if so, determining the final sampling resistor based on the magnitude of the target detection current, and calculating the second total current based on the final sampling resistor; adjusting the second sampling resistor and updating the second total current based on the final sampling resistor; determining whether the updated second total current reaches the target detection current; if not, continuing to adjust the second sampling resistor until the difference between the second total current and the target detection current is less than a second current threshold; if so, using the second total current as the final total current.

[0015] Furthermore, based on multiple target detection currents and various detonator resistance detection circuit states, the detonator resistance is determined, including: constructing multiple voltage equations based on the various detonator resistance detection circuit states for each target detection current; solving the multiple voltage equations to obtain the total resistance and detonator resistance; calculating the average value of the detonator resistance corresponding to multiple target detection currents, and using the average value of the detonator resistance as the final detonator resistance.

[0016] Furthermore, it also includes determining the resistance values ​​of the first sampling resistor and the second sampling resistor, including: determining the second basic parameters of the detonator based on the detonator type; the second basic parameters include the rated equivalent resistance of the detonator, the minimum voltage required for detonator ignition, and the minimum operating voltage required for detonator detection; determining the sum of the resistances of the first sampling resistor and the second sampling resistor based on the second basic parameters and the total voltage of the detonator; and allocating the sum of the resistances to the first sampling resistor and the second sampling resistor based on the resistance allocation ratio to obtain the resistance values ​​of the first sampling resistor and the second sampling resistor.

[0017] The present invention has the following advantages and beneficial effects:

[0018] This invention constructs multiple circuit states for resistance detection by setting a parallel resistor connected in parallel with the detonator and setting a dual sampling unit, which enables accurate identification of minute differences in detonators: it can distinguish the resistance difference of detonators in the same blasting network, avoid asynchronous detonation or mis-detonation caused by uneven resistance, and can adapt to nonlinear resistors: it solves the problem of the detonator bridge wire resistance changing with current, and the detected value is closer to the actual detonation state.

[0019] This invention enables adaptive detection of detonator types by setting multiple target detection currents and dynamically allocating them through sampling resistors. It eliminates the need for manual parameter switching and automatically supports multiple types of detonators. Furthermore, by adjusting the sampling resistors and detection currents, it covers the entire detection range from the static current to the critical ignition current of the detonator.

[0020] The present invention also ensures that the detection voltage is lower than the minimum ignition voltage of the detonator based on the sampling resistor allocation of the detonator ignition voltage, and precisely limits the detection current through constant current source module control to avoid explosion accidents and ensure the safety of personnel and engineering. Attached Figure Description

[0021] Figure 1 This is an exemplary schematic diagram of a voltage detection module of a detonator resistance detection device based on adaptive tracking technology, provided for some embodiments of the present invention;

[0022] Figure 2 This is an exemplary flowchart of a detonator resistance detection method based on adaptive tracking technology, provided for some embodiments of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] The detonator resistance detection device based on adaptive tracking technology provided by this invention includes a detonator, a communication module, a processor, a power supply module, a detonator drive module, a voltage detection module, a constant current source module, a detection drive module, and a detonator. The detonator provides a positive power terminal and a negative power terminal. The positive power terminal is connected to the communication module, the power supply module, the voltage detection module, and the detonator. The negative power terminal is connected to the processor, the detonator drive module, and the detection drive module. The power supply module is communicatively connected to the communication module. The communication module is communicatively connected to the power supply module and the processor. The processor is communicatively connected to the communication module, the voltage detection module, the detonator drive module, and the detection drive module. The detonator drive module is communicatively connected to the processor, the voltage detection module, the detonator, and the constant current source module. The voltage detection module is communicatively connected to the processor, the detonator, and the detonator drive module. The constant current source module is connected to the voltage detection module, the detonator drive module, the detonator, and the detection drive module. Figure 1 This is an exemplary schematic diagram of a voltage detection module in a detonator resistance detection device based on adaptive tracking technology, provided for some embodiments of the present invention. (See attached diagram.) Figure 1 As shown, the voltage detection module includes a parallel circuit and a voltage sampling circuit; the parallel circuit includes a parallel resistor R1 connected in parallel with the detonator Rd; the voltage sampling circuit is located at one end of the detonator current output.

[0025] In some embodiments, a parallel resistor R1 is provided in the parallel circuit; by connecting the parallel resistor R1 in parallel with the detonator Rd to form a parallel circuit, and connecting the parallel resistor R1 in series with a switch, various circuit states are presented by opening and closing the switch. For example, by controlling whether the parallel resistor R1 is connected in parallel with the detonator by the switch, various detonator resistance detection circuit states can be obtained.

[0026] In some embodiments, the voltage sampling circuit includes a sampling resistor and a sampling unit; the sampling resistor includes a first sampling resistor R7 and a second sampling resistor R9; the sampling unit includes a first sampling unit and a second sampling unit; the first sampling unit is connected to the current output terminal of the detonator Rd and the processor, respectively; the second sampling unit is connected to the output terminal of the first sampling resistor R7 and the input terminal of the second sampling resistor R9, respectively; the input terminal of the first sampling resistor R7 is connected to the output terminals of the first sampling unit and the detonator Rd; the output terminal of the second sampling resistor R9 is connected to the negative terminal of the power supply.

[0027] In some embodiments, the first sampling unit includes an operational amplifier A1, the first port of which is connected to the processor's AD1 port and a resistor R2; the other end of the resistor R2 is connected to the second port of the operational amplifier A1 and a resistor R3; the other end of the resistor R3 is connected to the negative terminal of the power supply; the third port of the operational amplifier A1 is connected to a resistor R4; the other end of the resistor R4 is connected to the current output terminal of the detonator Rd; the second sampling unit includes an operational amplifier A2, the first port of which is connected to the processor's AD2 port and a resistor R5; the other end of the resistor R5 is connected to the second port of the operational amplifier A2 and a resistor R6; the other end of the resistor R6 is connected to the negative terminal of the power supply; the third port of the operational amplifier A2 is connected to a resistor R8; the other end of the resistor R8 is connected to the current input terminal of the second sampling resistor R9.

[0028] In some embodiments, one end of resistor R10 in the constant current source module is connected to the current output terminal of detonator Rd, and the other end is connected to the source of MOSFET M1; the drain of MOSFET M1 is connected to resistor R11, and the gate is connected to the source of MOSFET M2; the other end of resistor R11 is connected to the gate of MOSFET M1 and the source of MOSFET M2; the drain of MOSFET M2 is connected to the G3 port of the processor; the gate of MOSFET M2 is connected to resistor R12; and the other end of resistor R12 is connected to the negative terminal of the power supply.

[0029] Figure 2 This is an exemplary flowchart illustrating a detonator resistance detection method based on adaptive tracking technology, provided for some embodiments of the present invention. Figure 2 As shown, the detonator resistance detection method based on adaptive tracking technology provided by the present invention includes the following:

[0030] By controlling the on / off state of the parallel resistor R1, various detonator resistance detection circuit states can be constructed; the parallel resistor refers to the resistor connected in parallel with the detonator. The states of the detonator resistance detection circuit being open and closed at the parallel resistor R1 can be determined using Kirchhoff's current law or the definition of Kirchhoff's voltage, thus obtaining various detonator resistance detection circuit states.

[0031] The first total current is determined based on the voltage across the first sampling resistor R7. The voltage across the first sampling resistor R7 is the voltage measured at ports AD1 and AD2. The voltage U7 across the first sampling resistor R7 is obtained by restoring the gain of operational amplifiers A1 and A2, respectively, and then the first total current is obtained.

[0032] Based on the detonator type, multiple target detection currents are determined. Detonator types can include high-resistance detonators and magnetoelectric detonators, etc. The target detection current refers to the current used to detect the detonator's resistance.

[0033] In some embodiments, multiple target detection currents are determined based on detonator type, including:

[0034] Based on the detonator type, the first basic parameters of the detonator are determined; the first basic parameters include the quiescent current and the maximum permissible detection current.

[0035] Based on the static current range and the maximum allowable detection current, multiple target detection currents are determined; the calculation formulas for the multiple target detection currents are as follows:

[0036] ;

[0037] ;

[0038] in, Represents the set of target detection currents; This represents the detection current of the k-th target; k represents the detection current variable, which takes a value of 1-n. Indicates the maximum allowable detection current; n represents the total number of preset detection current levels; This indicates the static current of the detonator.

[0039] The resistance values ​​of the first and second sampling resistors are adjusted so that the total current sequentially reaches the target detection current. For example, in an oil well blasting scenario, three sets of target detection currents need to be preset based on the safety characteristics of the downhole detonator. These could be low, medium, and high gradients, all below the critical detonation current. During detection, the total resistance value of the first and second sampling resistors is first adjusted to reduce the total circuit current to the low target detection current. At this point, the current is only used to activate the basic circuit inside the detonator, verifying whether the detonator is properly powered on. Then, the total resistance value of the sampling resistors is reduced to raise the total current to the medium target detection current. This current signal is used to read core data such as the detonator's internal identification information and energy storage status. Finally, the total resistance value of the sampling resistors is further reduced to reach the high target detection current, verifying the stability of the detonator under near-detonation conditions.

[0040] In some embodiments, adjusting the resistance values ​​of the first sampling resistor and the second sampling resistor so that the total current sequentially reaches the target detection current includes:

[0041] Adjust the first sampling resistor and update the first total current based on the voltage across the first sampling resistor.

[0042] Determine whether the updated first total current reaches the target detection current; if not, continue adjusting the first sampling resistor until the difference between the first total current and the target detection current is less than the first current threshold. The first current threshold is a pre-set threshold related to the current difference.

[0043] If so, the final sampling resistor is determined based on the magnitude of the target detection current, and the second total current is calculated based on the final sampling resistor. The final sampling resistor refers to the resistor ultimately used to sample the total current. Since the voltage measured at different locations may differ, leading to different final results, the total current is divided into two parts: a high current range and a low current range. For example, the total current can be divided into two segments: less than or equal to 1.6mA and greater than 1.6mA. When the total current is less than or equal to 1.6mA, the ratio of U1 measured at AD1 to the total resistance of the first and second sampling resistors is used as the second total current, and the second and first sampling resistors are used as the final sampling resistors. When the total current is greater than 1.6mA, the ratio of U2 measured at AD2 to the total resistance of the second sampling resistor is used as the second total current, and the second sampling resistor is used as the final sampling resistor.

[0044] The second sampling resistor is adjusted, and the second total current is updated based on the final sampling resistor value. The resistance value of the first sampling resistor is greater than that of the second sampling resistor. The current is coarsely adjusted through the first sampling resistor and finely adjusted through the second sampling resistor to improve the adjustment accuracy.

[0045] Determine whether the updated second total current reaches the target detection current; if not, continue adjusting the second sampling resistor until the difference between the second total current and the target detection current is less than the second current threshold. The second current threshold is another pre-set threshold related to the current difference. The second current threshold is less than the first current threshold.

[0046] If so, the second total current will be used as the final total current.

[0047] The detonator resistance is determined based on the detection current of multiple targets and the states of various detonator resistance detection circuits.

[0048] In some embodiments, the detonator resistance is determined based on multiple target detection currents and multiple detonator resistance detection circuit states, including:

[0049] Based on the various detonator resistance detection circuit states for each target detection current, multiple voltage equations are constructed.

[0050] Solve multiple voltage equations to obtain the total resistance Rb and the detonator Rd.

[0051] Calculate the average value of the detonator resistance corresponding to the detection current of multiple targets, and use the average value of the detonator resistance as the final detonator resistance.

[0052] Match the detonator resistance to a standard resistance range to determine if the detonator is malfunctioning and obtain a detonator status indicator. The standard resistance range can be a pre-set range where the detonator resistance value is within the normal range. For example, the standard resistance range can be 46 ohms to 66 ohms. If the judgment result is yes, it means the detonator is in normal working condition, and the current detonator can continue to be used. If the judgment result is no, it means the detonator is malfunctioning and is not in normal working condition, and the current detonator needs to be replaced.

[0053] In some embodiments, the method further includes determining the resistance values ​​of the first sampling resistor and the second sampling resistor, including:

[0054] Based on the detonator type, the second basic parameters of the detonator are determined; the second basic parameters include the detonator's rated equivalent resistance, the minimum voltage required for detonator ignition, and the minimum operating voltage required for detonator testing.

[0055] Based on the second fundamental parameter and the total voltage of the detonator, the sum of the resistances of the first and second sampling resistors is determined. Both the first and second sampling resistors are sliding rheostats, and their total resistance satisfies:

[0056] ;

[0057] ;

[0058] in, Indicates the total voltage of the detonator; Indicates the rated equivalent resistance of the detonator; This indicates the minimum voltage required for the detonator to ignite; This indicates the resistance value of the first sampling resistor; This indicates the resistance value of the second sampling resistor; This indicates the minimum operating voltage required for detonator detection; m represents the pre-set resistance ratio between the first and second sampling resistors, which is greater than 1, for example, it can be 10.

[0059] Based on the resistance allocation ratio, the resistors are allocated to the first sampling resistor and the second sampling resistor to obtain the resistance values ​​of the first sampling resistor and the second sampling resistor.

[0060] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A detonator resistance detection device based on adaptive tracking technology, characterized in that, It includes an initiator, a communication module, a processor, a power supply module, a detonator drive module, a voltage detection module, a constant current source module, a detection drive module, and a detonator; the initiator is provided with a positive power supply terminal and a negative power supply terminal respectively; The positive terminal of the power supply is connected to the communication module, the power supply module, the voltage detection module, and the detonator; the negative terminal of the power supply is connected to the processor, the detonator driver module, and the detection driver module; the power supply module is connected to the communication module; the communication module is connected to the power supply module and the processor; the processor is connected to the communication module, the voltage detection module, the detonator driver module, and the detection driver module; the detonator driver module is connected to the processor, the voltage detection module, the detonator, and the constant current source module; the voltage detection module is connected to the processor, the detonator, and the detonator driver module; the constant current source module is connected to the voltage detection module, the detonator driver module, the detonator, and the detection driver module; the voltage detection module includes a parallel circuit and a voltage sampling circuit. The parallel circuit includes a parallel resistor R1 connected in parallel with the detonator Rd; The voltage sampling circuit is set at one end of the detonator current output; A parallel resistor R1 is provided in the parallel circuit; a parallel circuit is formed by connecting the parallel resistor R1 in parallel with the detonator Rd, and the parallel resistor R1 is connected in series with the switch, and various circuit states are presented by the opening and closing of the switch. The voltage sampling circuit includes a sampling resistor and a sampling unit; The sampling resistors include a first sampling resistor R7 and a second sampling resistor R9; The sampling unit includes a first sampling unit and a second sampling unit; The first sampling unit is connected to the current output terminal of the detonator Rd and the processor, respectively; The second sampling unit is connected to the output terminal of the first sampling resistor R7 and the input terminal of the second sampling resistor R9, respectively. The input terminal of the first sampling resistor R7 is connected to the output terminal of the first sampling unit and the detonator Rd; The output terminal of the second sampling resistor R9 is connected to the negative terminal of the power supply. The first sampling unit includes an operational amplifier A1, and the first port of the operational amplifier A1 is connected to the AD1 port of the processor and a resistor R2. The other end of resistor R2 is connected to the second port of operational amplifier A1 and resistor R3; The other end of resistor R3 is connected to the negative terminal of the power supply; The third port of operational amplifier A1 is connected to resistor R4; The other end of resistor R4 is connected to the current output terminal of detonator Rd; The second sampling unit includes an operational amplifier A2, the first port of which is connected to the processor's AD2 port and resistor R5; The other end of resistor R5 is connected to the second port of operational amplifier A2 and resistor R6; The other end of resistor R6 is connected to the negative terminal of the power supply; The third port of operational amplifier A2 is connected to resistor R8; The other end of resistor R8 is connected to the current input terminal of the second sampling resistor R9.

2. The detonator resistance detection device based on adaptive tracking technology according to claim 1, characterized in that, One end of resistor R10 in the constant current source module is connected to the current output terminal of detonator Rd, and the other end is connected to the source of MOSFET M1. The drain of MOSFET M1 is connected to resistor R11, and the gate is connected to the source of MOSFET M2. The other end of resistor R11 is connected to the gate of MOSFET M1 and the source of MOSFET M2. The drain of MOSFET M2 is connected to the G3 port of the processor; The gate resistor of MOSFET M2 is R12; The other end of resistor R12 is connected to the negative terminal of the power supply.

3. A detonator resistance detection method based on adaptive tracking technology, applied to the detonator resistance detection device based on adaptive tracking technology as described in any one of claims 1-2, characterized in that, include: By controlling the on / off state of the parallel resistor, various detonator resistance detection circuit states can be constructed. Parallel resistance refers to the resistance connected in parallel with the detonator; The first total current is determined based on the voltage across the first sampling resistor; Based on the detonator type, the detection current of multiple targets is determined; Adjust the resistance values ​​of the first sampling resistor and the second sampling resistor so that the total current sequentially reaches the target detection current; Determine the detonator resistance based on the detection current of multiple targets and the states of various detonator resistance detection circuits; Match the detonator resistance to the standard resistance range to determine if the detonator is abnormal and obtain the detonator status indicator.

4. The detonator resistance detection method based on adaptive tracking technology according to claim 3, characterized in that, Based on the detonator type, the detection currents for multiple targets are determined, including: Based on the type of detonator, determine the first basic parameters of the detonator; the first basic parameters include the quiescent current and the maximum permissible detection current; Based on the static current range and the maximum allowable detection current, multiple target detection currents are determined; the calculation formulas for the multiple target detection currents are as follows: ; ; in, Represents the set of target detection currents; This represents the detection current of the k-th target; k represents the detection current variable, which takes a value of 1-n. Indicates the maximum allowable detection current; n represents the total number of preset detection current levels; This indicates the static current of the detonator.

5. The detonator resistance detection method based on adaptive tracking technology according to claim 3, characterized in that, Adjust the resistance values ​​of the first and second sampling resistors so that the total current sequentially reaches the target detection current, including: Adjust the first sampling resistor and update the first total current based on the voltage across the first sampling resistor; Determine whether the updated first total current reaches the target detection current; if not, continue to adjust the first sampling resistor until the difference between the first total current and the target detection current is less than the first current threshold. If so, the final sampling resistor is determined based on the magnitude of the target detection current, and the second total current is calculated based on the final sampling resistor; Adjust the second sampling resistor and update the second total current based on the final sampling resistor; Determine whether the updated second total current reaches the target detection current; if not, continue to adjust the second sampling resistor until the difference between the second total current and the target detection current is less than the second current threshold. If so, the second total current will be used as the final total current.

6. The detonator resistance detection method based on adaptive tracking technology according to claim 3, characterized in that, Based on the detection current of multiple targets and the states of various detonator resistance detection circuits, the detonator resistance is determined, including: Based on the various detonator resistance detection circuit states for each target detection current, multiple voltage equations are constructed. Solve multiple voltage equations to obtain the total resistance and detonator resistance; Calculate the average value of the detonator resistance corresponding to the detection current of multiple targets, and use the average value of the detonator resistance as the final detonator resistance.

7. The detonator resistance detection method based on adaptive tracking technology according to claim 3, characterized in that, It also includes determining the resistance values ​​of the first sampling resistor and the second sampling resistor, including: Based on the type of detonator, determine the second basic parameters of the detonator; the second basic parameters include the rated equivalent resistance of the detonator, the minimum voltage required for detonator ignition, and the minimum operating voltage required for detonator testing. Based on the second basic parameter and the total voltage of the detonator, determine the sum of the resistances of the first sampling resistor and the second sampling resistor; Based on the resistance allocation ratio, the resistors are allocated to the first sampling resistor and the second sampling resistor to obtain the resistance values ​​of the first sampling resistor and the second sampling resistor.

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