CN114993122A - Test system and method for simulating small-pitch tunneling face blasting electrostatic interference - Google Patents
Test system and method for simulating small-pitch tunneling face blasting electrostatic interference Download PDFInfo
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- CN114993122A CN114993122A CN202210460680.XA CN202210460680A CN114993122A CN 114993122 A CN114993122 A CN 114993122A CN 202210460680 A CN202210460680 A CN 202210460680A CN 114993122 A CN114993122 A CN 114993122A
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Abstract
The invention provides a test system and a test method for simulating blasting static interference of a small hole distance driving face, wherein a first detonator bus and a second detonator bus are arranged on a detonator, and a static gun head and a static gun ground are arranged on a static generator; the fixed end of the first test switch is used for connecting a first electronic detonator module bus of the electronic detonator module, and the contact end of the first test switch can be connected with a first detonator bus, an electrostatic gun head and an electrostatic gun ground; the fixed end of the second test switch is used for connecting a second electronic detonator module bus of the electronic detonator module, and the contact end of the second test switch can be connected with a second detonator bus, the electrostatic gun head and the electrostatic gun ground; the detection equipment is used for measuring the voltage at two ends of the energy storage capacitor of the electronic detonator module. The invention can quickly find out the electrostatic weak point of the electronic detonator module and pointedly improve the ESD protection performance of the detonator module, thereby greatly reducing the blind shot proportion during the blasting of the detonator.
Description
Technical Field
The invention relates to the technical field of electronic detonators, in particular to a test system and a test method for simulating small-hole-distance tunneling face blasting electrostatic interference.
Background
At present, in the blasting of the electronic detonator, especially in the tunneling blasting of a small-hole-distance roadway, the probability of blind blasting is higher, and except for the artificial factors such as nonstandard construction of field workers, the blind blasting has a relationship with the characteristics of the tunneling blasting to a great extent. Because the set time delay is different when the electronic detonators are subjected to networking blasting, and the hole distance of the blasting of the tunneling surface is smaller, the detonators which are detonated first can generate some interference signals to enter the electronic detonators which are detonated later, and if the electronic detonators are not protected in place, the detonators are easy to work abnormally and generate misfire.
According to the analysis result of the electronic detonator which is not detonated on site, most of the interference is caused by static electricity generated in the explosion process, and a very clear conclusion is not provided at present on how the specific static electricity enters the detonator and how the specific static electricity affects the detonation of the detonator, and meanwhile, a good method is not provided at present for simulating and analyzing the problems.
In some existing electrostatic testing systems for electronic detonators, static electricity is directly applied between two ends of a leg wire A, B of an electronic detonator module through an ESD electrostatic generator, and finally the basis for judging that the electronic detonator passes the electrostatic test is that the ignition powder head of the electronic detonator module should not be ignited. The existing electronic detonator static test system only requires no firing for the ESD test of the electronic detonator module, namely, the detonator is not mistakenly exploded, but cannot test whether the capacitor voltage of the detonator module is discharged or not.
Some detection methods adopt a mode of observing the voltage of the energy storage capacitor for judgment, but the voltage is detected by the detection equipment on the energy storage capacitor by mistake, which is equivalent to that an additional passage is added on the detonator module, so that the ESD test result is completely incorrect, and the ESD test result is also seriously inconsistent with the field condition.
In some detection methods, a small LED or the like is used for replacing the firing resistor Rf, and whether the energy storage capacitor discharges or not is judged by observing whether the LED or the like can be lighted or not after the detonator is delayed and ESD electrostatic interference is injected.
The patent document with publication number CN100562753C discloses an electrostatic detection device of a flame-proof type fluidized bed, which consists of a probe, a conversion circuit and a flame-proof type electronic box, wherein the probe comprises a stainless steel sheath and an electrode encapsulated in the stainless steel sheath; the conversion circuit comprises a measuring resistor, a converter, a data acquisition and display system and a direct-current power supply which are connected in series, and the measuring resistor and the converter are arranged in the explosion-proof electronic box. However, the detection device of this patent document is not suitable for electrostatic detection of an electronic detonator.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a test system and a test method for simulating small-pitch heading face blasting static interference.
The test system for simulating the small-pitch tunneling face blasting static interference comprises an initiator, an electrostatic generator, a first test switch, a second test switch and detection equipment, wherein the initiator is connected with the first test switch through a pipeline;
the detonator is provided with a first detonator bus and a second detonator bus, and the electrostatic generator is provided with an electrostatic gun head and an electrostatic gun ground;
the fixed end of the first test switch is used for connecting a first electronic detonator module bus of an electronic detonator module, and the contact end of the first test switch can be connected with the first detonator bus, the electrostatic gun head and the electrostatic gun ground;
the fixed end of the second test switch is used for connecting a second electronic detonator module bus of the electronic detonator module, and the contact end of the second test switch can be connected with the second detonator bus, the electrostatic gun head and the electrostatic gun ground;
the detection equipment is used for measuring the voltage at two ends of the energy storage capacitor of the electronic detonator module.
Preferably, the electronic detonator module comprises an electronic detonator chip, a preceding stage protection circuit, a bridge circuit, a communication capacitor, an ignition element, an ignition switch and an energy storage capacitor;
the first electronic detonator module bus is connected with a first input end of the preceding stage protection circuit, and the second electronic detonator module bus is connected with a second input end of the preceding stage protection circuit;
the first output end of the pre-stage protection circuit is respectively connected with the first pin of the electronic detonator chip and the first connecting end of the bridge circuit, and the second output end of the pre-stage protection circuit is respectively connected with the second pin of the electronic detonator chip and the second connecting end of the bridge circuit;
the third connecting end of the bridge-stack circuit is connected with the third pin of the electronic detonator chip, and the fourth connecting end of the bridge-stack circuit is connected with the fourth pin of the electronic detonator chip;
one end of the communication capacitor is connected with the fifth pin of the electronic detonator chip, and the other end of the communication capacitor is grounded;
a sixth pin of the electronic detonator chip is respectively connected with one end of the ignition element, one end of the energy storage capacitor and one end of the detection device; a seventh pin of the electronic detonator chip is connected with the base electrode of the ignition switch;
the collector of the ignition switch is connected with the other end of the ignition element, and the emitter of the ignition switch is grounded;
and the other end of the energy storage capacitor is connected with the other end of the detection equipment and is grounded.
Preferably, the front stage protection circuit includes a first current limiting resistor, a second current limiting resistor and a TVS transistor;
one end of the first current-limiting resistor is used as a first input end of the preceding stage protection circuit and connected with one end of the TVS tube, and the other end of the first current-limiting resistor is used as a first output end of the preceding stage protection circuit;
one end of the second current-limiting resistor is used as a second input end of the preceding stage protection circuit and connected with the other end of the TVS tube, and the other end of the second current-limiting resistor is used as a second output end of the preceding stage protection circuit.
Preferably, the pre-stage protection circuit comprises a first current-limiting resistor, a second current-limiting resistor and an ESD tube;
one end of the first current-limiting resistor is used as a first input end of the preceding stage protection circuit and is connected with one end of the ESD tube, and the other end of the first current-limiting resistor is used as a first output end of the preceding stage protection circuit;
one end of the second current-limiting resistor is used as a second input end of the preceding stage protection circuit and connected with the other end of the ESD tube, and the other end of the second current-limiting resistor is used as a second output end of the preceding stage protection circuit.
Preferably, the electrostatic generator is an ESD electrostatic generator, and the detection device is a multimeter or an oscilloscope.
Preferably, the ignition element is a bridgewire resistor or a metal patch resistor.
The invention also provides a test method of the test system for simulating the small pitch distance tunneling face blasting electrostatic interference, which comprises the following steps of:
step 1: respectively knocking a first test switch and a second test switch at the positions of a first detonator bus and a second detonator bus, connecting an electronic detonator module with a detonator, supplying power to the electronic detonator module through the detonator, the first electronic detonator module bus and the second electronic detonator module bus, outputting an effective reset signal POR through an internal reset circuit to reset the electronic detonator chip after the electronic detonator chip is powered on, and enabling the electronic detonator chip to enter a standby state to wait for receiving an instruction;
and 2, step: sending a scanning command through the detonator to obtain a user equipment code UID of the electronic detonator module;
and 3, step 3: setting delay time of the electronic detonator through the initiator and the UID (user equipment) code, and setting the delay value as the maximum value configurable by the electronic detonator chip;
and 4, step 4: an energy storage capacitor charging command is sent through the detonator, and the capacitor is charged to a preset high voltage U h Used for simulating detonator initiation;
and 5: after the capacitor is charged, verifying a detonation password through the detonator, after the verification is successful, sending a detonation command through the detonator, and after the electronic detonator chip receives the detonation command, entering a delay mode of counting down before detonation;
step 6: according to different ESD electrostatic test types, the positions of the first test switch and the second test switch are respectively controlled:
the test type one: simulating static electricity to enter from the first electronic detonator module bus and not to exit from the second electronic detonator module bus, and striking the first test switch at the position of the static gun head and suspending the second test switch without connection;
test type two: simulating static electricity to enter from the second electronic detonator module bus and not to exit from the first electronic detonator module bus, suspending the first test switch without connection, and striking the second test switch at the position of the static gun head;
the test type three: simulating a first electronic detonator module bus and a second electronic detonator module bus static circuit, and then striking a first test switch at the position of the static gun head and striking a second test switch at the position of the static gun ground;
and 7: for the three ESD static test types in step 6, at least the following test items are required to test the electronic detonator module:
a first test item: contact discharge of +8kV or more, N times continuously in 10 seconds, N > -20;
and (4) testing item II: -contact discharge above 8kV, N times in 10 seconds, N > -20;
and 8: after static electricity is applied, the detection equipment is connected into the electronic detonator module, and the voltage U of the energy storage capacitor at the moment is measured 1 ；
And step 9: according to the measured voltage U 1 And judging whether the electronic detonator module is qualified or not.
Preferably, the delay value is 60s or more.
Preferably, in the step 4, the preset high voltage is in a range of 16V to 25V.
Preferably, in the step 9, the normal voltage drop range U of the energy storage capacitor is calculated according to the normal leakage current I of the energy storage capacitor, the test time t and the capacity C of the energy storage capacitor 2 The calculation formula is as follows: t ═ C ═ U 2 ；
If U is h -U 1 Less than or equal to U 2 If so, the electronic detonator module is qualified; if U is h -U 1 Greater than U 2 And if so, the electronic detonator module is unqualified.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the antistatic performance of the detonator module is tested by injecting electrostatic interference from the electrostatic generator after the electronic detonator module enters the detonation countdown, and a strict test index is defined, so that the measurement result is more accurate;
2. by adopting the testing method to test the electronic detonator module, the electrostatic weak point of the electronic detonator module can be quickly found out, and the ESD protection performance of the detonator module is pertinently improved, so that the blind shot proportion during detonator explosion is greatly reduced;
3. the testing method provided by the invention adopts a mode that the electronic detonator chip enters a delay mode of countdown before detonation and then is injected with ESD interference, so that the actual situation in blasting of a small hole distance tunneling surface can be simulated truest, and the reliability of the electronic detonator module under the ESD interference entering from a leg wire can be tested.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a block diagram of a test system for simulating small pitch distance tunneling face blasting electrostatic interference according to the present invention;
FIG. 2 is a flow chart of steps of a test method for simulating blasting electrostatic interference of a small pitch heading face;
fig. 3 is a block diagram of a test system for simulating blasting electrostatic interference of a small pitch heading face in an embodiment.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1:
as shown in fig. 1 and fig. 2, this embodiment provides a test system for simulating small-pitch heading face blasting electrostatic interference, including an initiator, an electrostatic generator, a first test switch, a second test switch, and a detection device, where the initiator is provided with a first initiator bus and a second initiator bus, the electrostatic generator is provided with an electrostatic gun head and an electrostatic gun ground, a fixed end of the first test switch is used to connect a first electronic detonator module bus of an electronic detonator module, a contact end of the first test switch can be connected to the first initiator bus, the static gun head and the static gun ground, the fixed end of the second test switch is used for being connected with a second electronic detonator module bus of the electronic detonator module, the contact end of the second test switch can be connected with the second detonator bus, the static gun head and the static gun ground, and the detection equipment is used for measuring the voltage at two ends of an energy storage capacitor of the electronic detonator module.
The static generator is an ESD static generator, and the detection equipment is a universal meter or an oscilloscope. The ignition element is a bridgewire resistor or a metal patch resistor.
The electronic detonator module comprises an electronic detonator chip, a preceding stage protection circuit, a bridge-stack circuit, a communication capacitor, an ignition element, an ignition switch and an energy storage capacitor, wherein a first electronic detonator module bus is connected with a first input end of the preceding stage protection circuit, a second electronic detonator module bus is connected with a second input end of the preceding stage protection circuit, a first output end of the preceding stage protection circuit is respectively connected with a first pin of the electronic detonator chip and a first connecting end of the bridge-stack circuit, a second output end of the preceding stage protection circuit is respectively connected with a second pin of the electronic detonator chip and a second connecting end of the bridge-stack circuit, a third connecting end of the bridge-stack circuit is connected with a third pin of the electronic detonator chip, a fourth connecting end of the bridge-stack circuit is connected with a fourth pin of the electronic detonator chip, one end of the communication capacitor is connected with a fifth pin of the electronic detonator chip, the other end of the communication capacitor is grounded, and a sixth pin of the electronic detonator chip is respectively connected with one end of the ignition element, The seventh pin of the electronic detonator chip is connected with the base of the ignition switch, the collector of the ignition switch is connected with the other end of the ignition element, the emitting electrode of the ignition switch is grounded, and the other end of the energy storage capacitor is connected with the other end of the detection device and grounded.
The front-stage protection circuit comprises a first current-limiting resistor, a second current-limiting resistor and a TVS (transient voltage suppressor), wherein one end of the first current-limiting resistor is used as a first input end of the front-stage protection circuit and is connected with one end of the TVS, the other end of the first current-limiting resistor is used as a first output end of the front-stage protection circuit, one end of the second current-limiting resistor is used as a second input end of the front-stage protection circuit and is connected with the other end of the TVS, and the other end of the second current-limiting resistor is used as a second output end of the front-stage protection circuit.
The embodiment also provides a detection method of the test system for simulating the small-pitch heading face blasting electrostatic interference, which comprises the following steps:
step 1: the method comprises the steps of respectively striking a first test switch and a second test switch at the positions of a first detonator bus and a second detonator bus, connecting an electronic detonator module with a detonator, supplying power to the electronic detonator module through the detonator, the first electronic detonator module bus and the second electronic detonator module bus, outputting an effective reset signal POR through an internal reset circuit to reset the electronic detonator chip after the electronic detonator chip is powered on, and enabling the electronic detonator chip to enter a standby state to wait for receiving an instruction.
Step 2: and sending a scanning command through the initiator to obtain a user equipment code UID of the electronic detonator module.
And step 3: and finishing delay time setting on the electronic detonator through the initiator and the user equipment (UID), and setting a delay value as the maximum value configurable by the electronic detonator chip, wherein the delay value is more than or equal to 60 s.
And 4, step 4: an energy storage capacitor charging command is sent through the detonator, and the capacitor is charged to a preset high voltage U h The device is used for simulating detonator initiation, and the preset high voltage range is 16V-25V.
And 5: after the capacitor is charged, verifying the detonation password through the detonator, after the verification is successful, sending a detonation command through the detonator, and after the electronic detonator chip receives the detonation command, entering a delay mode of counting down before detonation.
Step 6: according to different ESD electrostatic test types, the positions of the first test switch and the second test switch are respectively controlled:
the test type one: simulating static electricity to enter from the first electronic detonator module bus and not to exit from the second electronic detonator module bus, and striking the first test switch at the position of the static gun head and suspending the second test switch without connection;
test type two: simulating static electricity to enter from the second electronic detonator module bus and not to exit from the first electronic detonator module bus, suspending the first test switch without connection, and striking the second test switch at the position of the static gun head;
the test type three: and simulating the static loops of the first electronic detonator module bus and the second electronic detonator module bus, and striking the first test switch at the position of the static gun head and striking the second test switch at the position of the static gun ground.
And 7: for the three ESD static test types in step 6, at least the following test items are required to test the electronic detonator module:
a first test item: contact discharge of +8kV or more, N times continuously in 10 seconds, N > -20;
and (4) testing item II: -8kV or more contact discharge, N times in 10 seconds, N > -20.
And 8: after static electricity is applied, the detection equipment is connected into the electronic detonator module, and the voltage U of the energy storage capacitor at the moment is measured 1 。
And step 9: according to the measured voltage U 1 Judging whether the electronic detonator module is qualified or not, and calculating the normal voltage drop range U of the energy storage capacitor according to the normal leakage current I of the energy storage capacitor, the test time t and the capacity C of the energy storage capacitor 2 The calculation formula is as follows: t ═ C ═ U 2 。
If U is h -U 1 Less than or equal to U 2 If so, the electronic detonator module is qualified; if U is h -U 1 Is greater thanU 2 And if so, the electronic detonator module is unqualified.
Example 2:
the difference between this embodiment and embodiment 1 is that the pre-stage protection circuit includes a first current-limiting resistor, a second current-limiting resistor, and an ESD tube.
One end of the first current-limiting resistor is used as a first input end of the preceding stage protection circuit and connected with one end of the ESD tube, the other end of the first current-limiting resistor is used as a first output end of the preceding stage protection circuit, one end of the second current-limiting resistor is used as a second input end of the preceding stage protection circuit and connected with the other end of the ESD tube, and the other end of the second current-limiting resistor is used as a second output end of the preceding stage protection circuit.
Example 3:
those skilled in the art will understand this embodiment as a more specific description of embodiment 1.
As shown in fig. 2 and fig. 3, the present embodiment provides a test system for simulating small-pitch heading face blasting electrostatic interference, including an initiator, an ESD electrostatic generator, a test switch 1, a test switch 2, an electronic detonator module, and a detection device.
An initiator: the electronic detonator detonation controller is communicated with the electronic detonator module through the A, B two buses; ESD electrostatic generator: the electrostatic generator can generate ESD pulses required by the test; the test switch 1: selecting whether the bus of the electronic detonator module A comes from the bus of the initiator A or an electrostatic gun head of an ESD electrostatic generator or the ground; and (3) testing the switch 2: selecting whether the bus of the electronic detonator module B comes from the bus of the initiator B or an electrostatic gun head of an ESD electrostatic generator or the ground; an electronic detonator module: the method comprises the following steps of receiving an instruction of an initiator through a leg wire to complete detonation and explosive detonation, wherein the initiator comprises an electronic detonator chip, a preceding stage protection circuit, a bridge circuit, a communication capacitor, an ignition element, an ignition switch, an energy storage capacitor and the like; the detection device comprises: the voltage measuring instrument can be a real multimeter or an oscilloscope or the like.
Preceding stage protection circuit: generally comprises a plurality of transient high voltage suppressing tubes (TVS tubes) or electrostatic discharge protection tubes (ESD tubes) and a current limiting resistor Rs, and suppresses the high voltage of an interference signal entering from a pin line; bridge circuit: a, B conversion from alternating current to direct current of the two buses is completed, and VDD/GND is output to supply power to the chip; an electronic detonator chip: the main control chip of the electronic detonator module receives the instruction, controls the delay and completes the detonation; communication capacitance: the detonator chip is used for supplying power to the chip when the detonator chip is in communication or enters detonation countdown; energy storage capacitor: after the chip receives the charging instruction, charging is carried out, and the stored energy is used for heating the ignition element Rf when the electronic detonator is detonated, so that the explosive head wrapped on the ignition element is detonated; an ignition element: generally a bridgewire resistor or a metal patch resistor, for detonating the explosive head after heating; an ignition switch: under the control of an electronic detonator chip, when the detonation countdown is finished, an ignition switch is turned on through an ignition control FIRE signal, and the energy of the energy storage capacitor is instantaneously released through an ignition element and a switch to ignite the explosive head.
The working principle is as follows:
the method comprises the following steps: the test switch 1 and the test switch 2 are respectively arranged at a position 1 and a position 2, the electronic detonator module is connected with the initiator, the initiator supplies power to the electronic detonator module through an A, B bus, after the detonator chip is powered on, an internal reset circuit can output an effective reset signal POR to reset the chip, and the chip enters a standby state to wait for receiving an instruction;
step two: the initiator sends a scanning command to obtain a user equipment code UID of the electronic detonator module;
step three: the detonator completes delay time setting on the electronic detonator through the UID, wherein a delay value is set to be a maximum value configurable by a chip, and the delay value is generally more than 60 s;
step four: the detonator sends an energy storage capacitor charging command to charge the capacitor to a high voltage U h For simulating detonator initiation, the high voltage U h Typically 16V to 25V;
step five: after the capacitor charging is finished, the detonator verifies a detonation password, a detonation command is sent after the detonation password is successfully verified, and after the electronic detonator chip receives the detonation command, the electronic detonator chip enters a delay mode of countdown before detonation;
step six: according to different ESD electrostatic test types, the positions of the test switch 1 and the test switch 2 are respectively controlled:
the type one is as follows: if the simulation static electricity enters from the line A and does not exit from the line B, the test switch 1 is turned on at the position 3, and the test switch 2 is suspended and is not connected;
type two: if the simulation static electricity enters from the line B and does not exit from the line A, the test switch 1 is suspended and is not connected, and the test switch 2 is switched to a position 3;
type three: if the static circuit of the A line and the B line is simulated, the test switch 1 is turned on at a position 3, and the test switch 2 is turned on at a position 4;
three types of major differences: in the first type and the second type, static electricity cannot form a loop, all static electricity can enter the detonator module, and the difference between the two types is that the static electricity enters from the line A or enters from the line B, so that different influences can be caused on the module; the third type forms a complete static circuit, static electricity enters from the line A and finally exits from the line B (or enters from the line B and exits from the line A, and the difference is small), and the static electricity cannot be accumulated on the detonator module;
step seven: for the above three types, at least the following test items are required to test the module:
a first test item: contact discharge of +8kV or more, N times in 10 seconds (N > ═ 20);
and (4) testing item II: -8kV or more contact discharge, N times in 10 seconds (N > -20);
the two test items are carried out under the three types, and an ESD test of air discharge can be added to the module, so that the reliability of the module is further improved;
step eight: after the static electricity is applied, a detection device is connected, the voltage of the energy storage capacitor is measured, the whole testing process generally lasts within 20 seconds due to small capacitor leakage current (less than 20uA), the whole testing process is calculated according to I, t and U, and assuming that the capacitor capacity is 100uF, U is I, t and C is 20, 20/100 is 4(V), namely the capacitor voltage normally decreases by no more than 4V, if the capacitor voltage decreases obviously, for example, from the charged high voltage U h The reduction of at least 5V indicates that the capacitance has obvious discharge phenomenon under the electrostatic action and the field use existsAnd if the explosion risks are rejected, judging the module to be unqualified, otherwise, judging the module to be qualified.
In the existing test system, static electricity is directly applied between two ends of a leg wire A, B of the electronic detonator module through an ESD static generator, and finally the basis for judging that the electronic detonator passes the static electricity test is that the ignition explosive head of the electronic detonator module should not be ignited. The test system of the embodiment supplies power to the electronic detonator through the initiator, completes a complete detonation flow, and enables the electronic detonator to enter a delayed countdown state, then uses the ESD electrostatic generator to apply static electricity to the electronic detonator module, wherein the static electricity applying mode includes applying an A end (B suspension), applying a B end (A suspension) and applying between an AB end, and finally determining whether the electronic detonator passes the static electricity test according to whether the voltage on the energy storage capacitor measured by the detection device is within a reasonable range.
By adopting the testing method to test the electronic detonator module, the electrostatic weak point of the electronic detonator module can be quickly found out, and the ESD protection performance of the detonator module is pertinently improved, so that the blind shot proportion during detonator explosion is greatly reduced;
the foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A test system for simulating small-pitch tunneling face blasting electrostatic interference is characterized by comprising an initiator, an electrostatic generator, a first test switch, a second test switch and detection equipment;
the detonator is provided with a first detonator bus and a second detonator bus, and the electrostatic generator is provided with an electrostatic gun head and an electrostatic gun ground;
the fixed end of the first test switch is used for connecting a first electronic detonator module bus of an electronic detonator module, and the contact end of the first test switch can be connected with the first detonator bus, the electrostatic gun head and the electrostatic gun ground;
the fixed end of the second test switch is used for connecting a second electronic detonator module bus of the electronic detonator module, and the contact end of the second test switch can be connected with the second detonator bus, the electrostatic gun head and the electrostatic gun ground;
the detection equipment is used for measuring the voltage at two ends of the energy storage capacitor of the electronic detonator module.
2. The test system for simulating the small-pitch heading face blasting electrostatic interference according to claim 1, wherein the electronic detonator module comprises an electronic detonator chip, a pre-stage protection circuit, a bridge circuit, a communication capacitor, an ignition element, an ignition switch and an energy storage capacitor;
the first electronic detonator module bus is connected with a first input end of the preceding stage protection circuit, and the second electronic detonator module bus is connected with a second input end of the preceding stage protection circuit;
the first output end of the pre-stage protection circuit is respectively connected with the first pin of the electronic detonator chip and the first connecting end of the bridge circuit, and the second output end of the pre-stage protection circuit is respectively connected with the second pin of the electronic detonator chip and the second connecting end of the bridge circuit;
the third connecting end of the bridge-pile circuit is connected with the third pin of the electronic detonator chip, and the fourth connecting end of the bridge-pile circuit is connected with the fourth pin of the electronic detonator chip;
one end of the communication capacitor is connected with the fifth pin of the electronic detonator chip, and the other end of the communication capacitor is grounded;
a sixth pin of the electronic detonator chip is respectively connected with one end of the ignition element, one end of the energy storage capacitor and one end of the detection device; a seventh pin of the electronic detonator chip is connected with the base electrode of the ignition switch;
the collector of the ignition switch is connected with the other end of the ignition element, and the emitter of the ignition switch is grounded;
and the other end of the energy storage capacitor is connected with the other end of the detection equipment and is grounded.
3. The test system for simulating the small-pitch heading face blasting electrostatic interference as claimed in claim 2, wherein the pre-stage protection circuit comprises a first current-limiting resistor, a second current-limiting resistor and a TVS (transient voltage suppressor) tube;
one end of the first current-limiting resistor is used as a first input end of the preceding stage protection circuit and connected with one end of the TVS tube, and the other end of the first current-limiting resistor is used as a first output end of the preceding stage protection circuit;
one end of the second current-limiting resistor is used as a second input end of the preceding stage protection circuit and connected with the other end of the TVS tube, and the other end of the second current-limiting resistor is used as a second output end of the preceding stage protection circuit.
4. The test system for simulating the small-pitch heading face blasting electrostatic interference according to claim 3, wherein the pre-stage protection circuit comprises a first current-limiting resistor, a second current-limiting resistor and an ESD (electro-static discharge) tube;
one end of the first current-limiting resistor is used as a first input end of the preceding stage protection circuit and is connected with one end of the ESD tube, and the other end of the first current-limiting resistor is used as a first output end of the preceding stage protection circuit;
one end of the second current-limiting resistor is used as a second input end of the preceding stage protection circuit and connected with the other end of the ESD tube, and the other end of the second current-limiting resistor is used as a second output end of the preceding stage protection circuit.
5. The test system for simulating the small-pitch heading face blasting electrostatic interference as claimed in claim 1, wherein the electrostatic generator is an ESD (electro-static discharge) electrostatic generator, and the detection device is a multimeter or an oscilloscope.
6. The test system for simulating small-pitch heading face blasting static interference according to claim 1, wherein the ignition element is a bridgewire resistor or a metal patch resistor.
7. A test method of a test system for simulating small-pitch heading face blasting static interference based on any one of claims 1 to 6 is characterized by comprising the following steps:
step 1: respectively knocking a first test switch and a second test switch at the positions of a first detonator bus and a second detonator bus, connecting an electronic detonator module with a detonator, supplying power to the electronic detonator module through the detonator, the first electronic detonator module bus and the second electronic detonator module bus, outputting an effective reset signal POR through an internal reset circuit to reset the electronic detonator chip after the electronic detonator chip is powered on, and enabling the electronic detonator chip to enter a standby state to wait for receiving an instruction;
step 2: sending a scanning command through the detonator to obtain a user equipment code UID of the electronic detonator module;
and 3, step 3: finishing delay time setting on the electronic detonator through the initiator and the user equipment (UID), and setting a delay value as a configurable maximum value of an electronic detonator chip;
and 4, step 4: an energy storage capacitor charging command is sent through the exploder, and the capacitor is charged to a preset high voltage U h Used for simulating detonator initiation;
and 5: after the capacitor is charged, verifying a detonation password through the detonator, after the verification is successful, sending a detonation command through the detonator, and after the electronic detonator chip receives the detonation command, entering a delay mode of counting down before detonation;
and 6: according to different ESD static test types, the positions of the first test switch and the second test switch are respectively controlled:
the test type one: simulating static electricity to enter from the first electronic detonator module bus and not to exit from the second electronic detonator module bus, and then striking the first test switch at the position of the static gun head and suspending the second test switch for non-connection;
test type two: simulating static electricity to enter from the second electronic detonator module bus and not to exit from the first electronic detonator module bus, suspending the first test switch without connection, and striking the second test switch at the position of the static gun head;
the test type three: simulating a first electronic detonator module bus and a second electronic detonator module bus static circuit, and then striking a first test switch at the position of the static gun head and striking a second test switch at the position of the static gun ground;
and 7: for the three ESD static test types in step 6, at least the following test items are required to test the electronic detonator module:
a first test item: contact discharge of +8kV or more, N times continuously in 10 seconds, N > -20;
and (4) testing item II: -8kV or more contact discharge, N times in 10 seconds, N > -20;
and 8: after static electricity is applied, the detection equipment is connected into the electronic detonator module, and the voltage U of the energy storage capacitor at the moment is measured 1 ；
And step 9: according to the measured voltage U 1 And judging whether the electronic detonator module is qualified or not.
8. The test method according to claim 8, wherein in the step 3, the delay value is equal to or greater than 60 s.
9. The test method according to claim 8, wherein the preset high voltage in step 4 is in a range of 16V to 25V.
10. The method according to claim 8, wherein in the step 9, the normal drop range U of the voltage of the energy storage capacitor is calculated according to the normal leakage current I of the energy storage capacitor, the test time t and the capacity C of the energy storage capacitor 2 The calculation formula is as follows: t ═ C ═ U 2 ；
If U is present h -U 1 Less than or equal to U 2 If so, the electronic detonator module is qualified; if U is h -U 1 Greater than U 2 And if so, the electronic detonator module is unqualified.
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