CN111238321A - Method and system for measuring electric leakage of electronic detonator network on line - Google Patents
Method and system for measuring electric leakage of electronic detonator network on line Download PDFInfo
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- CN111238321A CN111238321A CN202010082670.8A CN202010082670A CN111238321A CN 111238321 A CN111238321 A CN 111238321A CN 202010082670 A CN202010082670 A CN 202010082670A CN 111238321 A CN111238321 A CN 111238321A
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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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Abstract
The invention relates to the technical field of electronic detonators, in particular to a method and a system for measuring electric leakage of an electronic detonator network on line. The method comprises the following steps: connecting the detonator with all detonators by using a bus; the detonator outputs a constant 10.4V direct current voltage to the bus; after each electronic detonator receives the instruction, starting an A/D converter to convert the value of the electronic detonator VDD and storing the value of the electronic detonator VDD; reading back the VDD value of each electronic detonator and the corresponding detonator number one by one and storing the VDD value and the corresponding detonator number; and judging whether all the VDD values have values less than 7V. According to the method and the system for measuring the electric leakage of the electronic detonator network on line, the electric leakage can be measured without adding extra devices and elements through the internal circuits of the initiator and the detonator chip, and the extra measuring devices are not required to be carried, and the scheme can accurately judge the position of the electric leakage of the network through VDD data analysis, thereby greatly facilitating the investigation of field problems and saving a large amount of problem investigation time.
Description
Technical Field
The invention relates to the technical field of electronic detonators, in particular to a method and a system for measuring electric leakage of an electronic detonator network on line.
Background
The electronic detonator is used in various severe natural environments, is easy to damage during network wiring, can leak electricity if the damaged part meets water, increases bus current when the electricity leakage is serious, increases voltage drop on bus resistance, and leads to the fact that the detonator end obtains low voltage to influence communication and detonation, if part of the detonator can not be scanned or is not detonated. Chinese patent document No. 201029166007.5 discloses an electronic detonator network leakage detection device, which comprises a power supply module, a sampling module, a measurement module and an alarm module, wherein two network lines are connected with the power supply module one by one, and the sampling module one by one, the power supply current returns to the ground of the power supply module through the sampling module after flowing through the network lines, a comparator of the measurement module compares the network current sampled by the sampling module with the reference voltage of the power supply module to judge whether the network leaks electricity and outputs the result to the alarm module, chinese patent document No. 201210556042.4 discloses an electronic detonator network detector and detection method, which comprises a power supply unit, an output voltage selector, a sampling circuit, a display and control unit, a processor and the like, the power supply unit generates and switches to output a large power supply U and a small voltage V, when the large voltage U instantaneously changes to the small voltage V, the device comprises a current input module, a detection module, a conversion module, a protection switch, a power supply module, a main control module, an interface part, a display module and a communication module, wherein the detection module is used for detecting the network current, when the current is larger than the current value in a normal state, the occurrence of the electric leakage is judged, the self-power-off protection is carried out, in addition, earlier, a pointer type current detector is used for carrying out leakage current interpretation, when the device is used for measuring the network current, whether the electric leakage occurs in the network is judged by observing the deflection of a pointer which is larger than a certain threshold range, then, the reading of the pointer is further read, and the reason of the electric leakage is interpreted according to the reading.
By adopting the existing detection device and method, an extra device is needed, the network current is read and measured through the device, the current value is compared with a normal current value, the current leakage is determined as long as the current value exceeds the normal value, because the static currents of a plurality of detonators are inconsistent in practice, if the static current of a part of the detonators is larger in the detection process, the current leakage can be determined by mistake, after the current leakage is determined by mistake, a worker cannot find out specific reasons on site to cause the termination of blasting operation, because the explosives and the detonators are all inserted before the network current leakage is detected, the blasting area is in a high-risk warning state, and therefore the worker must be sent to watch the whole blasting area until the blasting operation is completed, which brings great safety risk to a blasting company and seriously influences the progress of the blasting operation.
Disclosure of Invention
The invention aims to provide a method and a system for measuring electric leakage of an electronic detonator network on line, so as to solve the problems in the background technology.
In order to solve the above technical problems, an object of the present invention is to provide a method for online measuring an electric leakage of an electronic detonator network, comprising the following steps:
s1, connecting the detonator with all detonators by using a bus according to the mode of the attached drawing 1, wherein each detonator is provided with a leg wire which is provided with a quick wire clamp, and the quick wire clamps of all detonators are clamped on the bus during connection, so that the connection network of the bus and all leg wires is an electronic detonator network;
s2, after the electric leakage detection button of the network is clicked on the initiator, the initiator outputs a constant 10.4V direct current voltage to the bus, and the direct current voltage enters each module input pin through the electronic detonator network to supply power to each electronic detonator;
s3, the detonator sends a network electric leakage detection instruction to all electronic detonators, and after each electronic detonator receives the instruction, the A/D converter is started to convert the value of the electronic detonator VDD and store the value of the electronic detonator VDD;
s4, the initiator reads back the VDD value of each electronic detonator and the corresponding detonator number one by one and stores the VDD value and the corresponding detonator number;
s5, the initiator judges whether all VDD values have values smaller than 7V, if yes, the network voltage drop is large and electric leakage exists, then the VDD values and detonator codes of all electronic detonators are sequenced, and the reason of the electric leakage is searched and analyzed.
The second purpose of the invention is to provide a system for online measuring the electric leakage of the electronic detonator network, which is used for realizing the steps of the method for online measuring the electric leakage of the electronic detonator network, and the system comprises an initiator, a rectifying circuit, a communication module, an A/D converter, a reference power supply, a logic control unit, voltage dividing resistors R1 and R2 and a filter capacitor C1.
Preferably, the rectifying circuit, the communication module, the A/D converter, the reference power supply, the logic control unit, the voltage dividing resistors R1 and R2 and the filter capacitor C1 are connected with a signal ground in common.
Preferably, two input ends of the rectifying circuit are respectively connected with a detonator pin LG1 and an LG2, LG1 and LG2 are connected to the initiator through a bus, the output end of the rectifying circuit, namely VDD, is led out in two paths, and one path is connected in series through a voltage dividing resistor R1 and a voltage dividing resistor R2 and then grounded.
Preferably, the intermediate point of the divider resistors R1 and R2 is connected to the filter capacitor and then connected to the input terminal of the a/D converter, and the other path is connected to the reference power supply for forming the 3V high-precision reference voltage Vref for providing the parameter voltage for the a/D converter.
Preferably, the output end of the a/D converter is connected to a logic control unit, and the other pin of the logic control unit is connected to one end of the communication module.
Preferably, the other two ends of the communication module are connected to lightning pins LG1 and LG2 and a bus.
The invention also provides a device for online measuring of electric leakage of an electronic detonator network, which comprises a processor, a memory and a computer program stored in the memory and running on the processor, wherein the processor executes the computer program to realize the steps of the method for online measuring of electric leakage of the electronic detonator network.
It is a fourth object of the present invention to provide a computer readable storage medium, wherein at least one program is stored in the storage medium, and the at least one program is executed by the processor to implement the steps of the method for online measuring of electric leakage of the electronic detonator network as described above.
Compared with the prior art, the invention has the beneficial effects that: in the method and the system for measuring the electric leakage of the electronic detonator network on line, the measurement of the leakage current can be carried out through the internal circuits of the detonator and the detonator chip without adding additional devices and elements and carrying additional measuring devices, thereby realizing the measurement of almost zero leakage current cost and avoiding the trouble of carrying measuring tools, and the method measures the power supply voltage VDD of the detonator instead of the network current, solves the problem of electric leakage misjudgment of the existing device, avoids the problem that the blasting operation is stopped because specific reasons cannot be found on site after misjudgment, improves the reliability of leakage current detection, reduces the economic loss and the risk of life safety of personnel, in addition, the scheme can accurately judge the position of the network leakage through VDD data analysis, greatly facilitates the troubleshooting of field problems, and can save a large amount of problem troubleshooting time.
Drawings
FIG. 1 is a block diagram of the overall process flow of the present invention;
FIG. 2 is a diagram illustrating the overall connection of the present invention;
FIG. 3 is a diagram of the overall circuit connection of the present invention;
fig. 4 is a structural diagram of the device for measuring the electric leakage of the electronic detonator network on line.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution:
the invention provides a method for measuring electric leakage of an electronic detonator network on line, which comprises the following steps:
s1, connecting the detonator with all detonators by using a bus according to the mode of the attached drawing 1, wherein each detonator is provided with a leg wire which is provided with a quick wire clamp, and the quick wire clamps of all detonators are clamped on the bus during connection, so that the connection network of the bus and all leg wires is an electronic detonator network;
s2, after the electric leakage detection button of the network is clicked on the initiator, the initiator outputs a constant 10.4V direct current voltage to the bus, and the direct current voltage enters each module input pin through the electronic detonator network to supply power to each electronic detonator;
s3, the detonator sends a network electric leakage detection instruction to all electronic detonators, and after each electronic detonator receives the instruction, the A/D converter is started to convert the value of the electronic detonator VDD and store the value of the electronic detonator VDD;
s4, the initiator reads back the VDD value of each electronic detonator and the corresponding detonator number one by one and stores the VDD value and the corresponding detonator number;
s5, the initiator judges whether all VDD values have values smaller than 7V, if yes, the network voltage drop is large and electric leakage exists, then the VDD values and detonator codes of all electronic detonators are sequenced, and the reason of the electric leakage is searched and analyzed.
The second purpose of the invention is to provide a system for online measuring the electric leakage of the electronic detonator network, which is used for realizing the steps of the method for online measuring the electric leakage of the electronic detonator network, and the system comprises an initiator, a rectifying circuit, a communication module, an A/D converter, a reference power supply, a logic control unit, voltage dividing resistors R1 and R2 and a filter capacitor C1.
In this embodiment, the rectifying circuit, the communication module, the a/D converter, the reference power supply, the logic control unit, the voltage dividing resistors R1 and R2, and the filter capacitor C1 are connected to the signal ground.
Furthermore, two input ends of the rectifying circuit are respectively connected with a detonator pin LG1 and an LG2, LG1 and LG2 are connected to the detonator through a bus, the output end of the rectifying circuit, namely VDD, is led out in two paths, and one path is grounded after being connected in series through a voltage dividing resistor R1 and a voltage dividing resistor R2.
Specifically, the intermediate point of the divider resistors R1 and R2 is connected with the filter capacitor to the ground and then connected to the input end of the a/D converter, and the other path is connected to a reference power supply for forming a 3V high-precision reference voltage Vref for providing a parameter voltage for the a/D converter.
In addition, the output end of the A/D converter is connected with the logic control unit, and the other pin of the logic control unit is connected with one end of the communication module.
Besides, the other two ends of the communication module are connected to lightning pins LG1 and LG2 and the bus.
The invention discloses a method and a system for measuring electric leakage of an electronic detonator network on line, wherein the working principle is as follows:
after a network electric leakage detection button is clicked on the detonator, the detonator outputs a constant 10.4V direct-current voltage to the bus, the direct-current voltage enters input pins of each module through an electronic detonator network, is rectified into a detonator power supply VDD through a rectifier bridge inside the detonator, all detonators enter a working state, the VDD is divided into Vt through resistors R1 and R2, the Vt is filtered by a filter capacitor to remove interference and then is sent into an A/D converter for conversion, wherein the A/D converter adopts a 10-bit successive comparison type digital converter;
then the detonator sends a command for detecting the electric leakage of the network to all the electronic detonators, a communication module U2 of each electronic detonator analyzes the command and transmits the command to a logic control unit U5, the logic control unit U5 reads the command, then an A/D converter is started to sample the analog voltage VDD and convert the analog voltage VDD into digital voltage and transmit the digital voltage to the logic control unit, and the logic control unit converts the digital voltage into a corresponding VDD value according to the digit of the A/D and a reference voltage value and stores the VDD value;
the detonator reads back the sending data to all detonators again, each detonator receives the data and sends the measured VDD value and the corresponding detonator number to the detonator one by one, and the detonator finishes all data and then tabulates and stores the data;
normally, when a bus with the maximum length of 1000 meters and a maximum number of 500 detonators are connected and networked simultaneously, the voltage VDD of a detonator end is more than or equal to 7V, the detonator judges whether the values of the VDD of all the detonators are less than 7V, if yes, the voltage drop of the network is large, the occurrence of electric leakage is judged, then the reason of the electric leakage is searched and analyzed, the detonator sorts the VDD values of all the electronic detonators and detonator codes, if all the VDD values are less than 7V, the situation that the first detonator to the detonator section of the connecting bus leaks electricity is judged, if only part of the detonators have VDD values less than 7V and the other values are more than 7V, the situation that the network leaks electricity from the positions of the detonators less than 7V is judged, if all the values of the VDD values less than 7V are almost equal, the situation that only one detonator and the foremost detonator generate the electric leakage occurs is judged, and if all the values of the VDD values less than, it is indicated that a plurality of electric leakages occur, and the detonators with unequal VDD need to be checked one by one.
According to the scheme, the internal circuits of the exploder and the detonator chip are utilized, after all detonators are powered, the power supply voltage VDD obtained by each detonator is measured by sending an instruction to each detonator, then the measured values are respectively returned to the exploder, each VDD value of the exploder is compared with a normal value to judge whether electric leakage occurs, and the specific position of the fault can be judged according to the rule of the VDD value.
Referring to fig. 4, a schematic structural diagram of an apparatus for online measuring an electric leakage of an electronic detonator network according to an embodiment of the present invention is shown, and the apparatus includes a processor, a memory, and a bus.
The processor comprises one or more than one processing core, the processor is connected with the processor through a bus, the memory is used for storing program instructions, and the method for measuring the electric leakage of the electronic detonator network on line is realized when the processor executes the program instructions in the memory.
Alternatively, the memory may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
In addition, the present invention also provides a computer readable storage medium, in which at least one program is stored, and the at least one program is executed by the processor to implement the steps of the method for measuring the electric leakage of the electronic detonator network on line as described above.
Optionally, the present invention also provides a computer program product containing instructions, which when run on a computer, causes the computer to perform the steps of the method for measuring the electric leakage of the electronic detonator network on line in the aspects described above.
It will be understood by those skilled in the art that all or part of the steps of implementing the above embodiments may be implemented by hardware, or may be implemented by hardware related to instructions of a program, and the program may be stored in a computer readable storage medium, where the above mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A method for measuring electric leakage of an electronic detonator network on line comprises the following steps:
s1, connecting the detonator with all detonators by using a bus;
s2, after the electric leakage detection button of the network is clicked on the detonator, the detonator outputs a constant direct current voltage to the bus;
s3, the detonator sends a network electric leakage detection instruction to all electronic detonators, and after each electronic detonator receives the instruction, the A/D converter is started to convert the value of the electronic detonator VDD and store the value of the electronic detonator VDD;
s4, the initiator reads back the VDD value of each electronic detonator and the corresponding detonator number one by one and stores the VDD value and the corresponding detonator number;
s5, the initiator judges whether all VDD values are smaller than a standard value, if so, the existence of electric leakage is indicated due to large network voltage drop, then the VDD values and detonator codes of all electronic detonators are sequenced, and the reason of the electric leakage is searched and analyzed.
2. A system for measuring the electric leakage of an electronic detonator network on line is used for realizing the steps of the method for measuring the electric leakage of the electronic detonator network on line, which is disclosed by claim 1, and the system comprises an exploder, a rectifying circuit, a communication module, an A/D converter, a reference power supply, a logic control unit, voltage-dividing resistors R1 and R2 and a filter capacitor C1.
3. The system for on-line measurement of electric leakage of the electronic detonator network as claimed in claim 2, wherein: the rectifying circuit, the communication module, the A/D converter, the reference power supply, the logic control unit, the voltage dividing resistors R1 and R2 and the filter capacitor C1 are connected with the signal ground in common.
4. The system for on-line measurement of electric leakage of the electronic detonator network as claimed in claim 2, wherein: two input ends of the rectifying circuit are respectively connected with a detonator pin LG1 and an LG2, the output end of the rectifying circuit, namely VDD, is led out in two paths, and one path is grounded after being connected in series through a voltage dividing resistor R1 and a voltage dividing resistor R2.
5. The system for on-line measurement of electric leakage of the electronic detonator network as claimed in claim 2, wherein: the LG1 and LG2 are connected to the initiator by bus bars.
6. The system for on-line measurement of electric leakage of the electronic detonator network as claimed in claim 2, wherein: the intermediate point of the divider resistors R1 and R2 is connected with the filter capacitor to the ground and then connected with the input end of the A/D converter, and the other path of the divider resistors is connected with a reference power supply and used for forming a 3V high-precision reference voltage Vref which is used for providing parameter voltage for the A/D converter.
7. The system for on-line measurement of electric leakage of the electronic detonator network as claimed in claim 6, wherein: the output end of the A/D converter is connected with the logic control unit, and the other pin of the logic control unit is connected with one end of the communication module.
8. The system for on-line measurement of electric leakage of the electronic detonator network as claimed in claim 7, wherein: the other two ends of the communication module are connected to lightning pins LG1 and LG2 and a bus.
9. The utility model provides a device of on-line measurement electron detonator network electric leakage which characterized in that: comprising a processor, a memory and a computer program stored in the memory and running on the processor, the processor implementing the steps of the method for measuring the electric leakage of the electronic detonator network on line as claimed in claim 1 when executing the computer program.
10. A computer readable storage medium, wherein at least one program is stored in the storage medium, and the at least one program is executed by the processor to implement the steps of the method for measuring the electric leakage of the electronic detonator network in online as claimed in claim 1.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112556521A (en) * | 2020-10-15 | 2021-03-26 | 上海芯跳科技有限公司 | Electronic detonator for improving communication anti-interference performance |
| CN113790648A (en) * | 2021-08-30 | 2021-12-14 | 北京桓安芯数技术有限公司 | Communication fault analysis method and device, electronic equipment and storage medium |
| CN114909966A (en) * | 2022-06-04 | 2022-08-16 | 北京伊拜科技有限责任公司 | Anti-interference wireless detonator with small antenna |
| 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0599597A (en) * | 1991-10-11 | 1993-04-20 | Asahi Chem Ind Co Ltd | Electric detonator continuity checker |
| US20050034624A1 (en) * | 2003-07-15 | 2005-02-17 | Special Devices, Inc. | Firing-readiness diagnostic of a pyrotechnic device such as an electronic detonator |
| CN201600429U (en) * | 2010-02-03 | 2010-10-06 | 北京北方邦杰科技发展有限公司 | Electric leakage detector for electronic detonator network |
| CN202133339U (en) * | 2011-03-31 | 2012-02-01 | 四川久安芯电子科技有限公司 | Device for acquiring ID information of electronic detonator and controlling detonation |
| CN102980451A (en) * | 2012-12-20 | 2013-03-20 | 四川久安芯电子科技有限公司 | Electronic detonator network detector and detection method |
| CN204705688U (en) * | 2015-03-26 | 2015-10-14 | 国家电网公司 | A kind of new pattern creepage detection system |
| CN108253855A (en) * | 2018-03-09 | 2018-07-06 | 成都友创芯达电子科技有限公司 | It is a kind of that there is the control device for detonation of electric detonator of management and control and management-control method |
-
2020
- 2020-02-07 CN CN202010082670.8A patent/CN111238321B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0599597A (en) * | 1991-10-11 | 1993-04-20 | Asahi Chem Ind Co Ltd | Electric detonator continuity checker |
| US20050034624A1 (en) * | 2003-07-15 | 2005-02-17 | Special Devices, Inc. | Firing-readiness diagnostic of a pyrotechnic device such as an electronic detonator |
| CN201600429U (en) * | 2010-02-03 | 2010-10-06 | 北京北方邦杰科技发展有限公司 | Electric leakage detector for electronic detonator network |
| CN202133339U (en) * | 2011-03-31 | 2012-02-01 | 四川久安芯电子科技有限公司 | Device for acquiring ID information of electronic detonator and controlling detonation |
| CN102980451A (en) * | 2012-12-20 | 2013-03-20 | 四川久安芯电子科技有限公司 | Electronic detonator network detector and detection method |
| CN204705688U (en) * | 2015-03-26 | 2015-10-14 | 国家电网公司 | A kind of new pattern creepage detection system |
| CN108253855A (en) * | 2018-03-09 | 2018-07-06 | 成都友创芯达电子科技有限公司 | It is a kind of that there is the control device for detonation of electric detonator of management and control and management-control method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112556521A (en) * | 2020-10-15 | 2021-03-26 | 上海芯跳科技有限公司 | Electronic detonator for improving communication anti-interference performance |
| CN113790648A (en) * | 2021-08-30 | 2021-12-14 | 北京桓安芯数技术有限公司 | Communication fault analysis method and device, electronic equipment and storage medium |
| 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 |
| CN114923379B (en) * | 2022-03-25 | 2023-10-27 | 上海芯飏科技有限公司 | Self-adaptive processing method 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 |
| CN114993120B (en) * | 2022-04-24 | 2023-10-31 | 上海芯飏科技有限公司 | Detection circuit and method for leakage current of ignition capacitor of electronic detonator |
| CN114909966A (en) * | 2022-06-04 | 2022-08-16 | 北京伊拜科技有限责任公司 | Anti-interference wireless detonator with small antenna |
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| CN111238321B (en) | 2022-02-18 |
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