CN114111477A - Electronic detonator capacitor high-voltage leakage current testing device, method and system - Google Patents
Electronic detonator capacitor high-voltage leakage current testing device, method and system Download PDFInfo
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- CN114111477A CN114111477A CN202111508082.7A CN202111508082A CN114111477A CN 114111477 A CN114111477 A CN 114111477A CN 202111508082 A CN202111508082 A CN 202111508082A CN 114111477 A CN114111477 A CN 114111477A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C21/00—Checking fuzes; Testing fuzes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/12—Primers; Detonators electric
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Abstract
The invention provides a device, a method and a system for testing high-voltage leakage current of an electronic detonator capacitor, wherein the device, the method and the system comprise the following steps: the tester comprises a tester main control unit, a voltage measuring circuit, a high-voltage power supply, an energy storage capacitor, a charging switch, an electronic detonator controller and a bridge circuit; the tester main control unit is respectively connected with the high-voltage power supply, the charging switch and the control end of the voltage test circuit, one end of the charging switch is connected with the high-voltage power supply, and the other end of the charging switch is respectively connected with the alternating current input end of the bridge circuit and the electronic detonator controller; the direct current positive pole of bridge rectifier circuit is connected with electron detonator controller, and electron detonator controller is connected with energy storage capacitor's positive pole, and the direct current negative pole of bridge rectifier circuit is connected with energy storage capacitor's negative pole, all is provided with the earthing terminal on tester main control unit, high voltage power supply and the charge switch, is provided with L _ GND end on the electron detonator controller. The invention solves the problem that the electric leakage of the capacitor cannot be measured when the traditional electronic detonator is used for detection.
Description
Technical Field
The invention relates to the technical field of electronic detonator testing devices, in particular to electronic detonator capacitor high-voltage leakage current testing equipment, method and system.
Background
The initiation energy of the electronic detonator comes from the energy storage capacitor, after the energy storage capacitor is charged, the energy is released to the bridge wire resistor when initiation is needed, and then the bridge wire resistor generates heat to ignite the explosive head to trigger detonator explosion, so the energy storage capacitor used by the electronic detonator is a very critical device and the qualification of the energy storage capacitor is required to be ensured. The traditional mode only detects whether the capacity of the capacitor meets a rated capacity value or not for the qualification of the energy storage capacitor, but does not detect the self leakage current of the fully charged capacitor. Under the condition, the electronic detonators with longer delay setting in the networking can slowly lose energy of the energy storage capacitor along with the process that the delay time expires under the initiation command, and at the moment when the delay time arrives, the phenomenon that the energy in the energy storage capacitor is not enough to enable the bridge wire resistor to generate enough heat and finally the explosion is refused can possibly occur.
Chinese patent publication No. CN111628575A discloses a method, an apparatus, and a circuit for determining an energy storage capacitor in an electronic detonator. A method of determining an energy storage capacitance in an electronic detonator, the method comprising: the micro-conduction time is used to approximate the linear relationship between the capacitance charge and the time. The invention designs a high-precision clock so that the host can accurately set the discharge time t of the capacitor. Acquiring voltage V1 of the capacitor before discharging by using a high-precision digital-to-analog converter; obtaining the voltage V2 after the capacitor discharges; and calculating the RC value according to the voltage V1 before discharge, the voltage V2 after discharge and the preset discharge time t. During specific test, a standard resistor which is similar to the internal resistance of the ignition head is selected, and a high-precision capacitance value can be simply and conveniently obtained.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide equipment, a method and a system for testing the high-voltage leakage current of the capacitor of the electronic detonator.
The invention provides a device for testing high-voltage leakage current of an electronic detonator capacitor, which comprises: the tester comprises a tester main control unit, a voltage measuring circuit, a high-voltage power supply, an energy storage capacitor, a charging switch, an electronic detonator controller and a bridge circuit;
the tester main control unit is respectively connected with a high-voltage power supply, a charging switch and a control end of a voltage test circuit, one end of the charging switch is connected with the high-voltage power supply, and the other end of the charging switch is respectively connected with an alternating current input end of a bridge circuit and an electronic detonator controller; the direct current positive pole of bridge rectifier circuit is connected with electron detonator controller, electron detonator controller is connected with energy storage capacitor's positive pole, the direct current negative pole of bridge rectifier circuit is connected with energy storage capacitor's negative pole, all be provided with the earthing terminal on tester main control unit, high voltage power supply and the charge switch, be provided with L _ GND end on the electron detonator controller.
Preferably, the voltage measuring circuit comprises a mos tube Q110, a mos tube Q109, a resistor R1, a resistor R2, a resistor R167, a resistor R168, a resistor R169, a resistor R171, and a capacitor C170;
one end of the resistor R171 is a V _ ADC end, one end of the resistor R171 is connected with one end of a capacitor C170, the other end of the capacitor C170 is grounded, the other end of the resistor R171 is respectively connected with one end of a resistor R2 and one end of a resistor R1, the other end of the resistor R2 is grounded, the other end of the resistor R1 is connected with the drain of the mos transistor Q110, the gate of the mos transistor Q110 is respectively connected with one end of a resistor R168 and one end of a resistor R167, the source of the mos transistor Q110 is connected with the other end of the resistor R167, and the source of the mos transistor Q110 is a VB end; the other end of the resistor R168 is connected with a drain electrode of a mos tube Q109, a source electrode of the mos tube Q109 is grounded, a gate electrode of the mos tube Q109 is connected with one end of a resistor R169, the gate electrode of the mos tube Q109 is a PA8 end, and the other end of the resistor R169 is grounded;
the VB end is connected with the anode of the energy storage capacitor, the V _ ADC end is connected with the main control unit of the tester, and the PA8 end is connected with the GPIO port of the main control unit.
Preferably, the tester main control unit provides the timing time through an internal Timer.
Preferably, the resistor R167, the resistor R168, the resistor R169, the mos tube Q110, and the mos tube Q109 constitute a switching path.
Preferably, the resistor R1 and the resistor R2 in the voltage measurement circuit divide VB into a voltage that the test main control unit ADC is suitable to receive when the mos transistor Q110 is turned on.
According to the method for testing the high-voltage leakage current of the capacitor of the electronic detonator, the voltage of the energy storage capacitor is sampled and subjected to digital-analog conversion through the voltage measuring circuit, the voltage V1 after charging, the voltage V2 after the charging switch is disconnected and the voltage V3 after the charging is disconnected for the preset time t are obtained, and the leakage current I value of the energy storage capacitor in the set time is calculated according to the voltage V1, the voltage V2, the voltage V3, the set time t, the capacity C of the energy storage capacitor and the rated voltage drop Vd of the diode used by the bridge circuit.
Preferably, the test method comprises the following steps:
step S1: the main control unit of the tester sends out an electric signal to close the charging switch, and the bridge circuit, the electronic detonator controller and the energy storage capacitor form a loop to charge the energy storage capacitor;
step S2: after the tester main control unit receives the feedback of charging completion, the GPIO port of the tester main control unit controls the PA8 to output high level to conduct the mos tube Q109, so that the mos tube Q110 is conducted;
step S3: reading a voltage V1 from a V _ ADC port through a tester main control unit, obtaining a rated voltage drop Vd of a diode used by a bridge circuit, and calculating a voltage Vb1 at two ends of an energy storage capacitor;
step S4: after acquiring V1, the main control unit of the tester is commanded to control the charging switch to be switched to a grounding state within 5us, and simultaneously, the voltage V2 of the V _ ADC port is read, and the voltage Vb2 at the two ends of the energy storage capacitor at the moment is calculated:
step S5: according to the characteristic that the capacitor voltage does not jump in a short time, obtaining that the voltage Vb1 at two ends of the energy storage capacitor is Vb2, and calculating a resistor R0 between the energy storage capacitor and a GND path;
step S6: the PA8 is controlled to output a low level through the main control unit of the tester, the mos tube Q109 is cut off, the mos tube Q110 is cut off, and the charging switch is kept in a grounding state;
step S7: starting a timer through a main control unit of the tester;
step S8: when the timer sets time t to end, the PA8 is controlled to output high level through the main control unit of the tester, and the mos tube Q109 and the mos tube Q110 are conducted;
step S9: and acquiring a voltage V3 read by the main control unit of the tester through a V _ ADC port, and calculating a voltage Vb3 at two ends of the capacitor at the moment:
step S10: and calculating the leakage current I of the energy storage capacitor within the preset time t of the timer in the main control unit of the tester according to the t, the capacitance value C of the energy storage capacitor and the delta Vb.
Preferably, the high-voltage power supply is controlled by the main control unit of the tester to output the voltage required by the energy storage capacitor.
The invention provides a system for testing high-voltage leakage current of an electronic detonator capacitor, which comprises the following modules:
module M1: the main control unit of the tester sends out an electric signal to close the charging switch, and the bridge circuit, the electronic detonator controller and the energy storage capacitor form a loop to charge the energy storage capacitor;
module M2: after the tester main control unit receives the feedback of charging completion, the GPIO port of the tester main control unit controls the PA8 to output high level to conduct the mos tube Q109, so that the mos tube Q110 is conducted;
module M3: reading a voltage V1 from a V _ ADC port through a tester main control unit, obtaining a rated voltage drop Vd of a diode used by a bridge circuit, and calculating a voltage Vb1 at two ends of an energy storage capacitor;
module M4: after acquiring V1, the main control unit of the tester is commanded to control the charging switch to be switched to a grounding state within 5us, and simultaneously, the voltage V2 of the V _ ADC port is read, and the voltage Vb2 at the two ends of the energy storage capacitor at the moment is calculated:
module M5: according to the characteristic that the capacitor voltage does not jump in a short time, obtaining that the voltage Vb1 at two ends of the energy storage capacitor is Vb2, and calculating a resistor R0 between the energy storage capacitor and a GND path;
module M6: the PA8 is controlled to output a low level through the main control unit of the tester, the mos tube Q109 is cut off, the mos tube Q110 is cut off, and the charging switch is kept in a grounding state;
module M7: starting a timer through a main control unit of the tester;
module M8: when the timer sets time t to end, the PA8 is controlled to output high level through the main control unit of the tester, and the mos tube Q109 and the mos tube Q110 are conducted;
module M9: and acquiring a voltage V3 read by the main control unit of the tester through a V _ ADC port, and calculating a voltage Vb3 at two ends of the capacitor at the moment:
module M10: and calculating the leakage current I of the energy storage capacitor within the preset time t of the timer in the main control unit of the tester according to the t, the capacitance value C of the energy storage capacitor and the delta Vb.
Preferably, the high-voltage power supply is controlled by the main control unit of the tester to output the voltage required by the energy storage capacitor.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention solves the problem that the electric leakage of the capacitor cannot be measured when the traditional electronic detonator is detected;
2. the invention judges whether the capacitor is qualified according to the preset threshold value, thereby greatly improving the qualification rate of the electronic detonator and reducing the anti-explosion phenomenon in the construction process;
3. the electronic detonator capacitor high-voltage leakage current testing equipment introduced by the invention has high measurement precision.
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 structural diagram of a capacitor high-voltage leakage current testing device of an electronic detonator according to an embodiment of the invention;
FIG. 2 is a circuit diagram of a voltage measurement circuit according to an embodiment of the present invention;
FIG. 3 is a simplified diagram of a first state of a test circuit according to an embodiment of the present invention;
FIG. 4 is a simplified diagram of a second state of a test circuit according to an embodiment of the present invention;
description of reference numerals:
tester main control unit 1 charging switch 5
Voltage measuring circuit 2 electronic detonator controller 6
High-voltage power supply 3 bridge circuit 7
Energy storage capacitor 4
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.
The invention introduces an electronic detonator capacitor high-voltage leakage current testing device, as shown in figure 1, comprising: the tester comprises a tester main control unit 1, a voltage measuring circuit 2, a high-voltage power supply 3, an energy storage capacitor 4, a charging switch 5, an electronic detonator controller 6 and a bridge circuit 7;
the tester main control unit 1 is respectively connected with the high-voltage power supply 3, the charging switch 5 and the control end of the voltage testing circuit, one end of the charging switch 5 is connected with the high-voltage power supply 3, and the other end of the charging switch 5 is respectively connected with the alternating current input end of the bridge circuit 7 and the electronic detonator controller 6; the direct current positive pole of bridge rectifier circuit 7 is connected with electron detonator controller 6, and electron detonator controller 6 is connected with energy storage capacitor 4's positive pole, and the direct current negative pole of bridge rectifier circuit 7 is connected with energy storage capacitor 4's negative pole, all is provided with the earthing terminal on tester main control unit 1, high voltage power supply 3 and the charging switch 5, is provided with L _ GND end on the electron detonator controller 6.
In more detail, referring to fig. 2, the voltage measuring circuit 2 includes a mos tube Q110, a mos tube Q109, a resistor R1, a resistor R2, a resistor R167, a resistor R168, a resistor R169, a resistor R171, and a capacitor C170.
One end of the resistor R171 is a V _ ADC end, one end of the resistor R171 is connected with one end of the capacitor C170, the other end of the capacitor C170 is grounded, the other end of the resistor R171 is respectively connected with one end of the resistor R2 and one end of the resistor R1, the other end of the resistor R2 is grounded, the other end of the resistor R1 is connected with the drain electrode of the mos tube Q110, the gate electrode of the mos tube Q110 is respectively connected with one end of the resistor R168 and one end of the resistor R167, the source electrode of the mos tube Q110 is connected with the other end of the resistor R167, and the source electrode of the mos tube Q110 is a VB end; the other end of the resistor R168 is connected with the drain electrode of the mos tube Q109, the source electrode of the mos tube Q109 is grounded, the gate electrode of the mos tube Q109 is connected with one end of the resistor R169, the gate electrode of the mos tube Q109 is a PA8 end, and the other end of the resistor R169 is grounded; the VB end is connected with the anode of the energy storage capacitor 4, the V _ ADC end is connected with the tester main control unit 1, and the PA8 end is connected with the GPIO port of the main control unit.
The tester main control unit 1 provides timing time through an internal Timer, and a resistor R167, a resistor R168, a resistor R169, a mos tube Q110 and a mos tube Q109 form a switch path. The resistor R1 and the resistor R2 in the voltage measurement circuit 2 divide VB into voltages that the test main control unit ADC is adapted to receive when the mos transistor Q110 is turned on. The high-voltage power supply 3 is controlled by the main control unit 1 of the tester to output the voltage required by the energy storage capacitor 4.
The invention also introduces a method for testing the high-voltage leakage current of the capacitor of the electronic detonator, which comprises the steps of sampling and carrying out digital-to-analog conversion on the voltage of the energy storage capacitor 4 through a voltage measuring circuit 2 to obtain the voltage V1 after charging, the voltage V2 after the charging switch 5 is disconnected and the voltage V3 after the preset time t after the charging is disconnected, and calculating the leakage current I value of the energy storage capacitor 4 in the set time according to the voltage V1, the voltage V2, the voltage V3, the set time t, the capacity C of the energy storage capacitor 4 and the rated voltage Vd of the diode used by the bridge circuit 7.
Specifically, the test method comprises the following steps:
step S1: the main control unit 1 of the tester sends an electric signal to close the charging switch 5, and the bridge rectifier circuit 7, the electronic detonator controller 6 and the energy storage capacitor 4 form a loop to charge the energy storage capacitor 4;
step S2: after the tester main control unit 1 receives the feedback of the completion of charging, the GPIO port of the tester main control unit 1 controls the PA8 to output high level to conduct the mos tube Q109, so that the mos tube Q110 is conducted;
step S3: the voltage V1 is read from the V _ ADC port by the tester main control unit 1, the test circuit can be simplified into figure 3 at the moment, the rated voltage drop voltage Vd of the diode used by the bridge circuit 7 is obtained, and the Vd can be confirmed from the specification of the device, so that the voltage Vb1 at the two ends of the energy storage capacitor 4 is calculated at the moment;
step S4: after acquiring V1, the tester main control unit 1 controls the charging switch 5 to switch to the ground state within 5us, and reads the V _ ADC port voltage V2, since the charging switch 5 is controlled to be grounded, the output voltage is 0, the diodes D1, D2, D3, and D4 in the bridge circuit 7 are all in the cut-off state, the energy storage capacitor 4 can only discharge through the loop formed by the electronic detonator controller 6 and the resistor R101, the resistor R102, and the resistor between the energy storage capacitor 4 and the GND path is defined as R0, the simplified circuit at this time is as shown in fig. 4, and the voltage of Vb2 can be calculated by the following formula:
step S5: according to the characteristic that the capacitor voltage does not jump in a short time, the voltage Vb1 across the energy storage capacitor 4 is equal to Vb2, that is to say
Thereby calculating the resistance R0 between the energy storage capacitor 4 and the GND path;
step S6: the tester main control unit 1 controls the PA8 to output a low level, the mos tube Q109 is cut off, the mos tube Q110 is cut off, and the charging switch 5 is kept in a grounding state;
step S7: starting a timer through the main control unit 1 of the tester;
step S8: when the timer sets time t to end, the tester main control unit 1 controls the PA8 to output high level, and the mos tube Q109 and the mos tube Q110 are conducted;
step S9: obtaining the voltage V3 read by the tester main control unit 1 through the V _ ADC port, and calculating the voltage Vb3 across the capacitor at this time because the current path state is also the same as that in fig. 4:
step S10: and calculating the leakage current I of the energy storage capacitor 4 within the preset time t of the timer in the main control unit 1 of the tester according to the t, the capacitance value C of the energy storage capacitor 4 and the delta Vb.
ΔVb＝Vb2-Vb3
In the method for testing the high-voltage leakage current of the capacitor of the electronic detonator, the energy storage capacitor 4 is charged, then the charging circuit is switched off, the capacitor voltage after charging and leakage is sampled by the high-precision ADC, the leakage time is measured by the Timer in the main control chip of the tester, the leakage current value of the capacitor in a high-voltage state after charging is calculated, whether the capacitor is qualified or not is judged according to the preset threshold value, the qualification rate of the electronic detonator is greatly improved, and the anti-explosion phenomenon in the construction process is reduced.
The invention also introduces a system for testing the high-voltage leakage current of the electronic detonator capacitor, which comprises the following modules:
module M1: the main control unit 1 of the tester sends an electric signal to close the charging switch 5, and the bridge rectifier circuit 7, the electronic detonator controller 6 and the energy storage capacitor 4 form a loop to charge the energy storage capacitor 4;
module M2: after the tester main control unit 1 receives the feedback of the completion of charging, the GPIO port of the tester main control unit 1 controls the PA8 to output high level to conduct the mos tube Q109, so that the mos tube Q110 is conducted;
module M3: reading a voltage V1 from a V _ ADC port through the tester main control unit 1, acquiring a rated voltage drop Vd of a diode used by the bridge circuit 7, and calculating a voltage Vb1 at two ends of the energy storage capacitor 4;
module M4: after acquiring V1, the tester main control unit 1 controls the charging switch 5 to switch to the ground state within 5us, and reads the V _ ADC port voltage V2, since the charging switch 5 is controlled to be grounded, the output voltage is 0, the diodes D1, D2, D3, and D4 in the bridge circuit 7 are all in the cut-off state, the energy storage capacitor 4 can only discharge through the loop formed by the electronic detonator controller 6 and the resistor R101, the resistor R102, and the resistor between the energy storage capacitor 4 and the GND path is defined as R0, the simplified circuit at this time is as shown in fig. 4, and the voltage of Vb2 can be calculated by the following formula:
module M5: according to the characteristic that the capacitor voltage does not jump in a short time, the voltage Vb1 across the energy storage capacitor 4 is equal to Vb2, that is to say
Thereby calculating the resistance R0 between the energy storage capacitor 4 and the GND path;
module M6: the tester main control unit 1 controls the PA8 to output a low level, the mos tube Q109 is cut off, the mos tube Q110 is cut off, and the charging switch 5 is kept in a grounding state;
module M7: starting a timer through the main control unit 1 of the tester;
module M8: when the timer sets time t to end, the tester main control unit 1 controls the PA8 to output high level, and the mos tube Q109 and the mos tube Q110 are conducted;
module M9: obtaining the reading voltage V3 of the main control unit 1 of the tester through the V _ ADC port, and calculating the voltage Vb3 at the two ends of the capacitor at the moment:
module M10: and calculating the leakage current I of the energy storage capacitor 4 within the preset time t of the timer in the main control unit 1 of the tester according to the t, the capacitance value C of the energy storage capacitor 4 and the delta Vb.
ΔVb＝Vb2-Vb3
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
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. The utility model provides an electron detonator electric capacity high voltage leakage current test equipment which characterized in that includes: the device comprises a tester main control unit (1), a voltage measuring circuit (2), a high-voltage power supply (3), an energy storage capacitor (4), a charging switch (5), an electronic detonator controller (6) and a bridge circuit (7);
the tester main control unit (1) is respectively connected with a high-voltage power supply (3), a charging switch (5) and a control end of a voltage test circuit, one end of the charging switch (5) is connected with the high-voltage power supply (3), and the other end of the charging switch (5) is respectively connected with an alternating current input end of a bridge rectifier circuit (7) and an electronic detonator controller (6); the direct current positive pole of bridge rectifier circuit (7) is connected with electron detonator controller (6), electron detonator controller (6) is connected with the positive pole of energy storage capacitor (4), the direct current negative pole of bridge rectifier circuit (7) is connected with the negative pole of energy storage capacitor (4), all be provided with the earthing terminal on tester main control unit (1), high voltage power supply (3) and charge switch (5), be provided with L _ GND end on electron detonator controller (6).
2. The electronic detonator capacitance high-voltage leakage current test device according to claim 1, wherein: the voltage measuring circuit (2) comprises a mos tube Q110, a mos tube Q109, a resistor R1, a resistor R2, a resistor R167, a resistor R168, a resistor R169, a resistor R171 and a capacitor C170;
one end of the resistor R171 is a V _ ADC end, one end of the resistor R171 is connected with one end of a capacitor C170, the other end of the capacitor C170 is grounded, the other end of the resistor R171 is respectively connected with one end of a resistor R2 and one end of a resistor R1, the other end of the resistor R2 is grounded, the other end of the resistor R1 is connected with the drain of the mos transistor Q110, the gate of the mos transistor Q110 is respectively connected with one end of a resistor R168 and one end of a resistor R167, the source of the mos transistor Q110 is connected with the other end of the resistor R167, and the source of the mos transistor Q110 is a VB end; the other end of the resistor R168 is connected with a drain electrode of a mos tube Q109, a source electrode of the mos tube Q109 is grounded, a gate electrode of the mos tube Q109 is connected with one end of a resistor R169, the gate electrode of the mos tube Q109 is a PA8 end, and the other end of the resistor R169 is grounded;
the VB end is connected with the positive electrode of the energy storage capacitor (4), the V _ ADC end is connected with the main control unit (1) of the tester, and the PA8 end is connected with the GPIO port of the main control unit.
3. The electronic detonator capacitance high-voltage leakage current test device according to claim 1, wherein: the tester main control unit (1) provides timing time through an internal Timer.
4. The electronic detonator capacitance high-voltage leakage current test device according to claim 2, wherein: the resistor R167, the resistor R168, the resistor R169, the mos tube Q110 and the mos tube Q109 form a switch path.
5. The electronic detonator capacitance high-voltage leakage current test device according to claim 2, wherein: and the resistor R1 and the resistor R2 in the voltage measuring circuit (2) divide VB into a voltage which is suitable for being received by the test main control unit ADC when the mos tube Q110 is conducted.
6. A method for testing the high-voltage leakage current of the capacitor of the electronic detonator, which adopts the equipment for testing the high-voltage leakage current of the capacitor of the electronic detonator as claimed in any one of claims 1 to 3, is characterized in that: sampling and digital-to-analog conversion are carried out on the voltage of the energy storage capacitor (4) through the voltage measuring circuit (2), a voltage V1 after charging, a voltage V2 after the charging switch (5) is turned off and a voltage V3 after the charging is turned off for a preset time t are obtained, and the leakage current I value of the energy storage capacitor (4) in the set time is calculated according to the voltage V1, the voltage V2, the voltage V3, the set time t, the capacity C of the energy storage capacitor (4) and the rated voltage drop Vd of a diode used by the bridge circuit (7).
7. The method for testing the high-voltage leakage current of the electronic detonator capacitor according to claim 6, wherein the method comprises the following steps: the test method comprises the following steps:
step S1: the tester main control unit (1) sends an electric signal to close the charging switch (5), and the bridge rectifier circuit (7), the electronic detonator controller (6) and the energy storage capacitor (4) form a loop to charge the energy storage capacitor (4);
step S2: after the tester main control unit (1) receives the feedback of charging completion, the GPIO port of the tester main control unit (1) controls the PA8 to output a high level to conduct the mos tube Q109, so that the mos tube Q110 is conducted;
step S3: reading a voltage V1 from a V _ ADC port through a tester main control unit (1), acquiring a rated voltage drop Vd of a diode used by a bridge circuit (7), and calculating a voltage Vb1 at two ends of an energy storage capacitor (4);
step S4: after acquiring V1, the main control unit (1) of the tester is commanded to control the charging switch (5) to be switched to a grounding state within 5us, and simultaneously, the voltage V2 of the V _ ADC port is read, and the voltage Vb2 of the two ends of the energy storage capacitor (4) at the moment is calculated:
step S5: according to the characteristic that the capacitor voltage does not jump in a short time, obtaining that the voltage Vb1 at the two ends of the energy storage capacitor (4) is Vb2, and calculating a resistor R0 between the energy storage capacitor (4) and a GND path;
step S6: the PA8 is controlled to output low level by the main control unit (1) of the tester, the mos tube Q109 is cut off, the mos tube Q110 is cut off, and the charging switch (5) is kept in a grounding state;
step S7: starting a timer through a main control unit (1) of the tester;
step S8: when the timer sets time t to end, the PA8 is controlled to output high level through the main control unit (1) of the tester, and the mos tube Q109 and the mos tube Q110 are conducted;
step S9: acquiring a voltage V3 read by the main control unit (1) of the tester through a V _ ADC port, and calculating a voltage Vb3 at two ends of a capacitor at the moment:
step S10: and calculating the leakage current I of the energy storage capacitor (4) within the preset time t of the timer in the main control unit (1) of the tester according to the t, the capacitance value C and the delta Vb of the energy storage capacitor (4).
8. The method for testing the high-voltage leakage current of the electronic detonator capacitor according to claim 6, wherein the method comprises the following steps: and the high-voltage power supply (3) is controlled by the main control unit (1) of the tester to output the voltage required by the energy storage capacitor (4).
9. The utility model provides an electron detonator electric capacity high voltage leakage current test system which characterized in that: the system comprises the following modules:
module M1: the tester main control unit (1) sends an electric signal to close the charging switch (5), and the bridge rectifier circuit (7), the electronic detonator controller (6) and the energy storage capacitor (4) form a loop to charge the energy storage capacitor (4);
module M2: after the tester main control unit (1) receives the feedback of charging completion, the GPIO port of the tester main control unit (1) controls the PA8 to output a high level to conduct the mos tube Q109, so that the mos tube Q110 is conducted;
module M3: reading a voltage V1 from a V _ ADC port through a tester main control unit (1), acquiring a rated voltage drop Vd of a diode used by a bridge circuit (7), and calculating a voltage Vb1 at two ends of an energy storage capacitor (4);
module M4: after acquiring V1, the main control unit (1) of the tester is commanded to control the charging switch (5) to be switched to a grounding state within 5us, and simultaneously, the voltage V2 of the V _ ADC port is read, and the voltage Vb2 of the two ends of the energy storage capacitor (4) at the moment is calculated:
module M5: according to the characteristic that the capacitor voltage does not jump in a short time, obtaining that the voltage Vb1 at the two ends of the energy storage capacitor (4) is Vb2, and calculating a resistor R0 between the energy storage capacitor (4) and a GND path;
module M6: the PA8 is controlled to output low level by the main control unit (1) of the tester, the mos tube Q109 is cut off, the mos tube Q110 is cut off, and the charging switch (5) is kept in a grounding state;
module M7: starting a timer through a main control unit (1) of the tester;
module M8: when the timer sets time t to end, the PA8 is controlled to output high level through the main control unit (1) of the tester, and the mos tube Q109 and the mos tube Q110 are conducted;
module M9: acquiring a voltage V3 read by the main control unit (1) of the tester through a V _ ADC port, and calculating a voltage Vb3 at two ends of a capacitor at the moment:
module M10: and calculating the leakage current I of the energy storage capacitor (4) within the preset time t of the timer in the main control unit (1) of the tester according to the t, the capacitance value C and the delta Vb of the energy storage capacitor (4).
10. The electronic detonator high voltage leakage current test system of claim 9, wherein: and the high-voltage power supply (3) is controlled by the main control unit (1) of the tester to output the voltage required by the energy storage capacitor (4).
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| CN114923379A (en) * | 2022-03-25 | 2022-08-19 | 上海芯飏科技有限公司 | Self-adaptive processing method and system for leakage current of electronic detonator priming network |
| CN114993120A (en) * | 2022-04-24 | 2022-09-02 | 上海芯飏科技有限公司 | Detection circuit and method for leakage current of ignition capacitor of electronic detonator |
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