Method for detecting false detonation signal

Abstract

The invention discloses a method for detecting a false detonation signal. The method comprises the following steps: identifying an abnormal sub-period according to ignition working current in divided sub-periods; processing and analyzing to obtain a current interference value; if the current interference value is greater than the current interference threshold, generating an interfered signal; on the basis of the interfered signal, according to the comparison result of the detonation signal value and the threshold value, the detonation sub-period is recognized, the detonation sub-period is analyzed, and a detonation effective value is obtained; according to the comparison result of the detonation effective value and the detonation effective threshold value, the suspected degree that the detonation signal is an effective detonation signal is judged, and if the suspected degree is low, a refined signal is generated; based on the precise analysis signal, the ignition working current of the abnormal sub-period is analyzed, and a deviation sub-period is obtained; analyzing the deviation sub-period to obtain a detonation signal deviation value; judging whether the signal is a false detonation signal or not according to a comparison result of the detonation signal deviation value and a detonation signal deviation threshold value; the method is beneficial for reducing hidden dangers caused by misjudgment of the detonation signal.

Description

Technical Field

[0001] The present invention relates to the field of security technology, and particularly to a method for detecting false detonation signals. Background Art

[0002] In the civil explosive industry, long wires are usually used as blasting wires to connect a number of electronic delay detonators. The initiator sends signals to each electronic delay detonator through the blasting wire, and each electronic delay detonator responds to the instructions sent by the initiator according to a specific protocol. In practical applications, various electromagnetic fields may exist around the blasting equipment, such as high-voltage wires, radio equipment, etc. These electromagnetic fields may interfere with the equipment and cause false detonation signals. In addition, the blasting equipment may be affected by physical vibrations during transportation, installation or use. Such vibrations may cause the components inside the ignition system to become loose or damaged, as well as the circuit of the equipment itself to age and the components to be damaged. These faults may cause the ignition system to generate unstable signals, including false detonation signals.

[0003] The present invention detects detonation signals, analyzes the current fluctuations caused by interference, determines whether the detonation signal is a valid detonation signal or a false detonation signal, and can also identify valid detonation signals affected by interference; it reduces accidental explosions caused by false detonation signals and also reduces the situation where valid detonation signals are affected by interference signals and misidentified as false detonation signals, resulting in the failure of detonation signals. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for detecting false detonation signals to solve at least one of the above-mentioned prior art problems.

[0005] The first step: Read the working current I1 on the blasting wire when the electronic delay detonator is working.

[0006] The second step: Regularly read the instantaneous working current I2; average I2 with the original I1 to obtain a new working current I3.

[0007] The third step: Press the detonation button to detect the detonation signal; obtain multiple real-time working currents, obtain the average value of the real-time working currents, and use the average value of the real-time working currents as the ignition working current I4.

[0008] The fourth step: Mark the value obtained by I3 - I4 as the detonation signal value I5. If I5 < threshold I, it is considered a false detonation signal caused by interference signals; otherwise, it is considered a valid detonation signal formed by ultra-high voltage.

[0009] Identify abnormal sub - cycles according to the ignition working current I4 within the divided sub - cycles; process and analyze to obtain the current interference value; if the current interference value is greater than the current interference threshold, generate an interference signal; based on the interference signal, within all sub - cycles, identify the detonation sub - cycles according to the comparison result between the detonation signal value I5 and the threshold I, analyze the number of normal sub - cycles and abnormal sub - cycles within the detonation sub - cycles, and obtain the detonation effective value.

[0010] Compare the detonation effective value with the detonation effective threshold, and judge the suspected degree that the detonation signal is a valid detonation signal according to the comparison result. If the suspected degree is low, generate an analysis signal.

[0011] Based on the analysis signal, analyze the current fluctuation degree of the ignition working current I4 of the abnormal sub - cycles to obtain the deviated sub - cycles; analyze the proportion of the deviated sub - cycles in the detonation sub - cycles and the abnormal sub - cycles respectively to obtain the detonation signal deviation value; compare the detonation signal deviation value with the detonation signal deviation threshold, and judge whether it is a false detonation signal according to the comparison result.

[0012] Advantages of the present invention:

[0013] 1. By analyzing the current fluctuation of the ignition working current I4 within the monitoring cycle, judge whether the ignition working current I4 is affected by external interference factors; if the ignition working current I4 is affected by interference, it is impossible to accurately judge whether it is a valid detonation signal through the detonation signal value I5; it can timely detect that the ignition working current I4 is affected by interference, analyze the affected ignition working current I4, and facilitate accurately judging the valid detonation signal.

[0014] 2. The present invention makes an effective judgment on whether there is an abnormality in the detonation signal and analyzes the abnormal detonation signal; avoids the false detonation signal caused by the ignition working current I4 being affected by interference from not being recognized and causing an accidental explosion; and through further analysis of the ignition working current I4 in the abnormal state, it can more accurately judge the false detonation signal caused by interference and the valid detonation signal formed by ultra - high voltage when the current is affected by the interference signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a flowchart of a method for detecting false detonation signals provided in Embodiment 1 of the present invention.

[0017] Figure 2 It is a flowchart for obtaining the current interference value of a method for detecting false detonation signals provided in Embodiment 2 of the present invention;

[0018] Figure 3 It is a flowchart for obtaining the effective detonation value of a method for detecting false detonation signals provided in Embodiment 3 of the present invention;

[0019] Figure 4 It is a flowchart for obtaining the deviation value of the detonation signal of a method for detecting false detonation signals provided in Embodiment 3 of the present invention. Detailed implementation manners

[0020] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1

[0022] Figure 1 It is a flowchart of a method for detecting false detonation signals provided in Embodiment 1 of the present invention. The embodiments of the present invention are applicable to detecting false detonation signals. This method for detecting false detonation signals can be executed by a system for detecting false detonation signals. The system for detecting false detonation signals can be implemented by software and hardware, and can be configured in a system device for detecting false detonation signals. Optionally, the system device for detecting false detonation signals can be an electronic device, which can be a notebook, a desktop computer, a smart tablet, etc. The embodiments of the present invention do not limit this.

[0023] As Figure 1 shown, a method for detecting false detonation signals provided in the embodiments of the present invention specifically includes the following steps:

[0024] The first step: After the electronic delay detonator is charged, start the analog-to-digital converter; read the initial current on the firing line when the electronic delay detonator is working, and set it as the working current I1;

[0025] The second step: The detonator controls the ignition circuit to generate an ignition signal; regularly read the instantaneous working current I2; average I2 and the original I1 to obtain a new working current I3;

[0026] It should be noted that here, the arithmetic mean method is used to calculate I1 and I2 to obtain I3. Although the weighted average may be more accurate, considering the processing speed of the microcontroller unit, the arithmetic average is more efficient;

[0027] Step 3: Press the detonation button. The microcontroller unit detects the detonation signal and activates the analog-to-digital converter; obtain multiple real-time working currents, obtain the average value of the real-time working currents, and use the average value of the real-time working currents as the ignition working current I4;

[0028] It should be noted that at the end of obtaining the ignition working current, the analog-to-digital converter switches to the low-speed mode to ensure the detection accuracy of the analog-to-digital converter during communication detection;

[0029] Step 4: Compare the working current I3 with the ignition working current I4, and mark the value obtained by I3 - I4 as the detonation signal value I5. If I5 < I, it is considered a false detonation signal caused by interference signals; otherwise, it is considered a valid detonation signal formed by ultra-high voltage; where I is the threshold;

[0030] In actual use, the ignition working current I4 will be affected by different factors and to different degrees. Under the action of interference signals, the ignition working current I4 will generate current fluctuations; the value of the detonation signal value I5 will also fluctuate with the current fluctuations of the ignition working current I4; the value of the detonation signal value I5 fluctuates, which may lead to the situation where interference signals are recognized as valid detonation signals; detecting false detonation signals requires analyzing whether the ignition working current I4 is affected by interference and the degree of interference;

[0031] Divide the monitoring period into several sub-periods. According to whether the ignition working current I4 is affected by interference within the sub-period, divide the sub-period into a normal sub-period and an abnormal sub-period; analyze the abnormal sub-period to obtain the current interference value;

[0032] Compare the current interference value with the current interference threshold, and judge whether the ignition working current I4 is affected by interference according to the comparison result; if so, generate an interference signal;

[0033] Based on the interference signal, within all sub-periods, compare the detonation signal value I5 with the threshold I; mark the sub-period with I5 > I as the detonation sub-period, analyze the number of normal sub-periods and abnormal sub-periods within the detonation sub-period to obtain the detonation effective value;

[0034] Compare the detonation effective value with the detonation effective threshold, and judge the suspected degree that the detonation signal is a valid detonation signal according to the comparison result. If the suspected degree is low, generate an analysis signal;

[0035] Based on the analyzed signal, analyze the current fluctuation degree of the abnormal sub-cycle ignition working current I4. According to the analysis result, obtain the offset sub-cycle; analyze the proportions of the offset sub-cycle in the detonation sub-cycle and the abnormal sub-cycle respectively to obtain the detonation signal deviation value.

[0036] Compare the detonation signal deviation value with the detonation signal deviation threshold, and judge whether it is a valid detonation signal according to the comparison result.

[0037] Embodiment 2

[0038] As Figure 2 shown, a method for detecting false detonation signals provided by an embodiment of the present invention specifically includes the following steps:

[0039] Step 1: Divide the monitoring cycle into several sub-cycles. According to whether the ignition working current I4 in the sub-cycle is disturbed, divide the sub-cycle into a normal sub-cycle and an abnormal sub-cycle; analyze the abnormal sub-cycle to obtain the current interference value.

[0040] During the monitoring cycle, divide the monitoring cycle into several sub-cycles, analyze whether the ignition working current I4 in the sub-cycle is disturbed, and judge whether the current fluctuation of the ignition working current I4 in the sub-cycle is abnormal.

[0041] Specifically, obtain the ignition working current I4 through a current sensor, transmit the current information obtained by the current sensor to the data processing unit, and through the analysis and processing of the data processing unit, obtain the current fluctuation curve of the ignition working current I4.

[0042] Compare the current fluctuation curve with the standard current fluctuation curve.

[0043] In any sub-cycle, subtract the current value of the current fluctuation curve from the current value of the standard current fluctuation curve and take the absolute value to obtain the current fluctuation difference.

[0044] Process the ratio of the current fluctuation difference to the current value of the standard current fluctuation curve at the corresponding time point to obtain the current abnormality ratio.

[0045] It should be noted that when the detonation signal value I5 > I, it is considered a valid detonation signal; if the ignition working current I4 is disturbed and the current value decreases, the detonation signal value I5 will increase as the current value of the ignition working current I4 decreases. Then, it may be due to the decrease in the current value caused by the disturbance of the ignition working current I4 that the detonation signal value I5 > I, resulting in a false detonation signal; therefore, analyze the situation where the ignition working current I4 is disturbed and the current value decreases.

[0046] During the acquisition of the sub-cycle, the duration during which the current fluctuation difference is not zero is marked as the abnormal fluctuation duration; the ratio of the abnormal fluctuation duration to the total duration of the sub-cycle is processed to obtain the abnormal fluctuation duration ratio;

[0047] The current anomaly ratio and the abnormal fluctuation duration ratio are weighted and summed to obtain the cycle anomaly value;

[0048] The sub-cycles with cycle anomaly values greater than the cycle anomaly threshold are marked as abnormal sub-cycles, and vice versa, marked as normal sub-cycles;

[0049] By analyzing the number of abnormal sub-cycles and the current fluctuation difference within the abnormal sub-cycles, it is determined whether the ignition working current I4 is interfered with;

[0050] The number of abnormal sub-cycles is obtained, and the ratio of the number of abnormal sub-cycles to the total number of sub-cycles is processed to obtain the abnormal cycle ratio, marked as ZQ;

[0051] The current fluctuation differences of all abnormal sub-cycles are obtained, and the sum of the current fluctuation differences of all abnormal sub-cycles is averaged to obtain the average current fluctuation difference;

[0052] The ratio of the average current fluctuation difference to the average current fluctuation difference threshold is processed to obtain the average current fluctuation difference ratio, marked as CJ;

[0053] The abnormal cycle ratio ZQ and the average current fluctuation difference ratio CJ are processed, and using the formula the current interference value GR is obtained; where s1 and s2 are preset proportionality coefficients;

[0054] It should be noted that the current interference value represents the degree of interference of the current fluctuation of the ignition working current I4 during the monitoring cycle;

[0055] Step 2: Compare the current interference value with the current interference threshold, and judge whether the current fluctuation of the ignition working current I4 is interfered according to the comparison result; if so, generate an interference signal;

[0056] The current interference value is compared with the current interference threshold, and the comparison process is as follows:

[0057] If the current interference value is greater than or equal to the current interference threshold, an interference signal is generated;

[0058] If the current interference value is less than the current interference threshold, an un-interfered signal is generated;

[0059] Based on the un-interfered signal, the working current I3 is compared with the ignition working current I4, and the value obtained by I3 - I4 is marked as the detonation signal value I5. If I5 > I, it is considered an effective detonation signal formed by ultra-high pressure; where I is the threshold;

[0060] The technical solution of the embodiment of the present invention is as follows: By analyzing the current fluctuation of the ignition working current I4 within the monitoring period, it is determined whether the ignition working current I4 is affected by external interference factors; if the ignition working current I4 is affected by interference, it is impossible to accurately determine whether the detonation signal value I5 is a valid detonation signal through the detonation signal value I5; by determining that the ignition working current I4 is affected by interference, the present invention avoids misjudgment caused by the inability to accurately determine whether the detonation signal value I5 is a valid detonation signal; and it can timely detect that the ignition working current I4 is affected by interference, analyze the affected ignition working current I4, which is convenient for accurately judging the valid detonation signal.

[0061] Embodiment III

[0062] As Figure 3 shown, a method for detecting false detonation signals provided by the embodiment of the present invention specifically includes the following steps:

[0063] Step 3: Based on the interference signal, within all sub-periods, compare the detonation signal value I5 with the threshold I; mark the sub-periods with I5 > I as detonation sub-periods, analyze the number of normal sub-periods and abnormal sub-periods within the detonation sub-periods, and obtain the detonation effective value;

[0064] Based on the interference signal, compare the detonation signal value I5 with the threshold I; analyze the comparison result;

[0065] Specifically, if I5 > I, mark the corresponding sub-period as a detonation sub-period;

[0066] If I5 < I, mark the corresponding sub-period as an invalid sub-period;

[0067] Analyze the number of normal sub-periods and abnormal sub-periods in the detonation sub-periods;

[0068] Obtain the number of normal sub-periods and abnormal sub-periods in the detonation sub-periods;

[0069] Perform a ratio process on the number of normal sub-periods and the total number of detonation sub-periods to obtain the normal detonation period ratio;

[0070] Perform a ratio process on the number of abnormal sub-periods and the total number of detonation sub-periods to obtain the abnormal detonation period ratio;

[0071] Perform a ratio process on the normal detonation period ratio and the abnormal detonation period ratio to obtain the detonation effective value;

[0072] Step 4: Compare the detonation effective value with the detonation effective threshold, and judge the suspected degree of the detonation signal being a valid detonation signal according to the comparison result. If the suspected degree is low, generate a refined analysis signal;

[0073] Compare the effective detonation value with the effective detonation threshold. The comparison process is as follows:

[0074] If the effective detonation value is greater than or equal to the effective detonation threshold, a normal signal is generated;

[0075] If the effective detonation value is less than the effective detonation threshold, an analysis signal is generated;

[0076] Based on the analysis signal, the suspicion degree that the detonation signal is a valid detonation signal is low;

[0077] Based on the normal signal, the suspicion degree that the detonation signal is a valid detonation signal is high, and it is considered as a valid detonation signal formed by ultra-high pressure;

[0078] The technical solution of the embodiment of the present invention is as follows: By analyzing the number of normal sub-cycles and abnormal sub-cycles within the detonation sub-cycle, it is judged whether the number of abnormal sub-cycles within the detonation sub-cycle exceeds the threshold; if not, the number of detonation sub-cycles is analyzed to distinguish whether it is a valid detonation signal formed by ultra-high pressure; if it exceeds, it is judged that the detonation signal is abnormal, the abnormal sub-cycles within the detonation sub-cycle are analyzed, and further analysis is made on whether the detonation signal is a false detonation signal; the present invention makes an effective judgment on whether the detonation signal is abnormal and makes a distinction; avoiding the false detonation signal caused by the interference of the ignition working current I4 cannot be recognized and causing accidental explosion.

[0079] Embodiment 4

[0080] As Figure 4 shown, a method for detecting false detonation signals provided by the embodiment of the present invention specifically includes the following steps:

[0081] Step Five: Based on the analysis signal, analyze the current fluctuation degree of the ignition working current I4 in the abnormal sub-cycle. According to the analysis result, obtain the deviated sub-cycle; analyze the proportion of the deviated sub-cycle in the detonation sub-cycle and the abnormal sub-cycle respectively, and obtain the detonation signal deviation value;

[0082] Based on the analysis signal, analyze the current fluctuation degree of the ignition working current I4 in the abnormal sub-cycle;

[0083] Obtain the current fluctuation difference of the ignition working current I4 in the abnormal sub-cycle;

[0084] Compare the current fluctuation difference with the current fluctuation difference threshold. If the current fluctuation difference is greater than the current fluctuation difference threshold, perform a difference operation on the current fluctuation difference and the current fluctuation difference threshold to obtain the fluctuation deviation value; perform a ratio operation on the fluctuation deviation value and the fluctuation deviation threshold to obtain the fluctuation deviation ratio, marked as BP;

[0085] The current fluctuation difference is compared with the current fluctuation difference threshold. If the current fluctuation difference is greater than the current fluctuation difference threshold, the deviation duration of the current fluctuation difference in the abnormal sub-period is obtained. The deviation duration is processed as a ratio with the deviation duration threshold to obtain a deviation time ratio, which is marked as PS.

[0086] The fluctuation deviation ratio BP and the deviation time ratio PS are processed and the formula is used. Obtain the deviation degree value PD; wherein a1 and a2 are preset proportional coefficients;

[0087] It should be noted that the greater the deviation value, the greater the interference degree of the ignition working current I4 in the abnormal sub-period;

[0088] The deviation degree value is compared with the deviation degree threshold. If the deviation degree value is greater than the deviation degree threshold, the abnormal sub-period is marked as a deviation sub-period; otherwise, no processing is performed on the abnormal sub-period;

[0089] Obtain the number of deviation sub-cycles, perform ratio processing on the number of deviation sub-cycles and the number of abnormal sub-cycles to obtain the deviation cycle ratio;

[0090] Obtain the overlapping sub-cycles of the deviation sub-cycle and the detonation sub-cycle, and count the number of overlapping sub-cycles; perform ratio processing on the number of overlapping sub-cycles and the number of deviation sub-cycles to obtain the overlapping cycle ratio;

[0091] Perform weighted summation of the deviation period ratio and the coincidence period ratio to obtain the detonation signal deviation value;

[0092] It should be noted that the initiation signal deviation value indicates the degree of influence of the deviation sub-cycle on the initiation signal; the higher the ratio of the number of overlapping sub-cycles to the number of deviation sub-cycles, the greater the initiation signal deviation value, and the greater the degree of influence of the deviation sub-cycle on the initiation signal;

[0093] Step 6: Compare the detonation signal deviation value with the detonation signal deviation threshold value, and determine whether it is a false detonation signal according to the comparison result;

[0094] The detonation signal deviation value is compared with the detonation signal deviation threshold value. The comparison process is as follows:

[0095] If the detonation signal deviation value is greater than or equal to the detonation signal deviation threshold, a false signal is generated;

[0096] If the detonation signal deviation value is less than the detonation signal deviation threshold, a true signal is generated;

[0097] Based on the real signal, it is judged to be an effective detonation signal formed by ultra-high pressure;

[0098] Based on the false signal, it is judged that it is a false detonation signal caused by the interference signal;

[0099] The technical solution of the embodiment of the present invention is as follows: By analyzing the abnormal fluctuation degree of the ignition working current I4 in the abnormal sub-cycle, the deviated sub-cycle is obtained; by analyzing the deviated sub-cycle and the detonation sub-cycle, the coincident sub-cycle is obtained; by analyzing the deviated sub-cycle and the coincident sub-cycle, the deviation value of the detonation signal is obtained; by analyzing the deviation value of the detonation signal, it is judged whether the detonation signal is a false detonation signal; through further analysis of the ignition working current I4 in the abnormal sub-cycle, the embodiment of the present invention can more accurately judge the false detonation signal caused by interference and the effective detonation signal formed by ultra-high pressure when the current is affected by interference signals.

[0100] The above has described an embodiment of the present invention in detail, but the above content is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A method for detecting a false detonation signal, characterized in that: The following steps are involved: Step 1: Read the working current I1 on the gun line when the electronic delay detonator is working; Step 2: Read the instantaneous working current I2 regularly; average I2 and the original I1 to obtain a new working current I3; Step 3: Press the detonation button to detect the detonation signal; obtain multiple real-time working currents, obtain the average value of the real-time working currents, and use the average value of the real-time working currents as the ignition working current I4; Step 4: Mark the value obtained by I3-I4 as the detonation signal value I5. If I5<threshold value I, it is considered to be a false detonation signal caused by an interference signal; otherwise, it is considered to be an effective detonation signal formed by ultra-high pressure; Identify the abnormal sub-cycle according to the ignition working current I4 in the divided sub-cycle; And process and analyze to obtain the current interference value; If the current interference value is greater than the current interference threshold, a disturbed signal is generated; Based on the interfered signal, in all sub-periods, the detonation sub-period is identified according to the comparison result of the detonation signal value I5 and the threshold value I, and the number of normal sub-periods and abnormal sub-periods in the detonation sub-period is analyzed to obtain the detonation effective value; The detonation effective value is compared with the detonation effective threshold, and the suspicion degree of the detonation signal being a valid detonation signal is determined according to the comparison result. If the suspicion degree is low, a refined analysis signal is generated; Based on the refined analysis signal, the current fluctuation degree of the ignition working current I4 in the abnormal sub-cycle is analyzed to obtain the deviation sub-cycle; the proportion of the deviation sub-cycle in the detonation sub-cycle and the abnormal sub-cycle is analyzed to obtain the detonation signal deviation value; The detonation signal deviation value is compared with the detonation signal deviation threshold value, and whether it is a false detonation signal is determined according to the comparison result.

2. A method for detecting a false detonation signal according to claim 1, characterized in that: The current interference value is obtained in the following manner: The number of abnormal sub-cycles is processed to obtain the abnormal cycle ratio ZQ; the current fluctuation of the abnormal sub-cycle is processed to obtain the current fluctuation difference mean ratio CJ; The abnormal period ratio ZQ and the current fluctuation difference mean ratio CJ are processed and the formula is used. The current interference value GR is obtained, wherein s1 and s2 are preset proportional coefficients.

3. A method for detecting a false detonation signal according to claim 2, characterized in that: The abnormal period ratio is obtained as follows: The current fluctuation difference is processed as a ratio with the current value of the standard current fluctuation curve to obtain the current anomaly ratio; Obtain the duration of the current fluctuation difference that is not zero in the sub-cycle, and mark it as the abnormal fluctuation duration; The abnormal fluctuation duration is processed by ratio processing with the total duration of the sub-period to obtain the abnormal fluctuation duration ratio; The current anomaly ratio and the abnormal fluctuation duration ratio are weighted and summed to obtain the period anomaly value; Mark the sub-period whose cycle abnormality value is greater than the cycle abnormality threshold as an abnormal sub-period; The number of abnormal sub-cycles is obtained, and the ratio of the number of abnormal sub-cycles to the total number of sub-cycles is processed to obtain the abnormal cycle ratio, which is marked as ZQ.

4. A method for detecting a false detonation signal according to claim 3, characterized in that: The current fluctuation difference is obtained in the following manner: The monitoring cycle is divided into several sub-cycles, the ignition working current I4 is obtained through a current sensor, the current information obtained by the current sensor is transmitted to a data processing unit, and the current fluctuation curve of the ignition working current I4 is obtained through analysis and processing by the data processing unit; The current fluctuation difference is obtained by subtracting the current value of the current fluctuation curve from the current value of the standard current fluctuation curve and taking the absolute value.

5. A method for detecting a false detonation signal according to claim 2, characterized in that: The current fluctuation difference mean ratio is obtained in the following manner: Obtaining the current fluctuation differences of all abnormal sub-periods, summing and averaging the current fluctuation differences of all abnormal sub-periods, and obtaining the current fluctuation difference mean; The current fluctuation difference mean value is ratioed to the current fluctuation difference mean threshold value to obtain the current fluctuation difference mean ratio, which is marked as CJ.

6. A method for detecting false detonation signals according to claim 1, characterized in that: The method for obtaining the detonation effective value is: In all sub-periods, the detonation signal value I5 is compared with the threshold value I; if I5>I, the corresponding sub-period is marked as the detonation sub-period; Obtain the number of normal sub-cycles and the number of abnormal sub-cycles in the detonation sub-cycle; The normal detonation cycle ratio is obtained by performing ratio processing on the number of normal sub-cycles and the total number of detonation sub-cycles; The abnormal sub-cycle number is processed by ratio processing with the total number of detonation sub-cycles to obtain the abnormal detonation cycle ratio; The normal detonation cycle ratio and the abnormal detonation cycle ratio are processed as ratios to obtain the detonation effective value.

7. A method for detecting false detonation signals according to claim 1, characterized in that: The method for obtaining the detonation signal deviation value is as follows: The deviation degree value is compared with the deviation degree threshold, and if the deviation degree value is greater than the deviation degree threshold, the abnormal sub-period is marked as a deviation sub-period; Obtain the number of deviation sub-cycles, perform ratio processing on the number of deviation sub-cycles and the number of abnormal sub-cycles to obtain the deviation cycle ratio; Obtain the overlapping sub-cycles of the deviation sub-cycle and the detonation sub-cycle, and count the number of overlapping sub-cycles; perform ratio processing on the number of overlapping sub-cycles and the number of deviation sub-cycles to obtain the overlapping cycle ratio; The deviation period ratio and the coincidence period ratio are weightedly summed to obtain the detonation signal deviation value.

8. A method for detecting false detonation signals according to claim 7, characterized in that: The method for obtaining the deviation value is as follows: The current fluctuation difference is processed to obtain the fluctuation deviation ratio BP; the deviation duration is processed to obtain the deviation time ratio PS; The fluctuation deviation ratio BP and the deviation time ratio PS are processed and the formula is used. The deviation degree value PD is obtained, wherein a1 and a2 are preset proportional coefficients.

9. A method for detecting false detonation signals according to claim 8, characterized in that: The fluctuation deviation ratio is obtained as follows: Obtaining the current fluctuation difference of the ignition working current I4 in the abnormal sub-period; The current fluctuation difference is compared with the current fluctuation difference threshold value. If the current fluctuation difference is greater than the current fluctuation difference threshold value, the current fluctuation difference and the current fluctuation difference threshold value are processed as a difference to obtain a fluctuation deviation value. The fluctuation deviation value is ratioed with the fluctuation deviation threshold to obtain the fluctuation deviation ratio, which is marked as BP.

10. A method for detecting false detonation signals according to claim 8, characterized in that: The deviation time ratio is obtained as follows: The current fluctuation difference is compared with the current fluctuation difference threshold. If the current fluctuation difference is greater than the current fluctuation difference threshold, the deviation duration of the current fluctuation difference in the abnormal sub-period is obtained, and the deviation duration is ratioed with the deviation duration threshold to obtain the deviation time ratio, which is marked as PS.

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