CN115164659B - System and method for simulating blasting site networking environment - Google Patents
System and method for simulating blasting site networking environment Download PDFInfo
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- CN115164659B CN115164659B CN202210884672.8A CN202210884672A CN115164659B CN 115164659 B CN115164659 B CN 115164659B CN 202210884672 A CN202210884672 A CN 202210884672A CN 115164659 B CN115164659 B CN 115164659B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/04—Arrangements for ignition
- F42D1/045—Arrangements for electric ignition
- F42D1/05—Electric circuits for blasting
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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 application provides a system and a method for simulating a blasting site networking environment, which can simulate the blasting site networking environment, is convenient for testing the performance of detonator products, ensures that the blasting site can be blasted successfully, and comprises the following steps of: the bus simulation module comprises a bus resistance simulation unit and a bus capacitance simulation unit, wherein the bus resistance simulation unit is used for simulating the resistance on a bus connecting the detonator with the detonator at the blasting site, and the bus capacitance simulation unit is used for simulating the capacitance on a bus connecting the detonator with the detonator at the blasting site; the foot line simulation module comprises a foot line capacitance simulation unit and a leakage current simulation unit, wherein the leakage current simulation unit comprises a foot line adjustable resistor and a leakage current detection device which are connected in series, the foot line simulation module adjusts the size of simulated tail end leakage current by adjusting the foot line adjustable resistor, and the foot line capacitance simulation unit is used for simulating capacitance on a foot line connected with a bus and a detonator.
Description
Technical Field
The application relates to the technical field of blasting, in particular to a system and a method for simulating a networking environment of a blasting site.
Background
Fig. 1 shows a schematic diagram of a typical networking environment of a blasting site, in which a busbar-connected initiator is arranged, and the busbar is connected with an electronic detonator through multiple foot lines. In an actual blasting scene, the length of the bus is about 1500 meters, the length of the leg wire is also 2-30 meters, the resistance and parasitic capacitance exist on the ultra-long bus and the lead wire of the leg wire, and the leakage current exists at the tail end of the networking. Because of the control measures and safety management regulations of explosive heads and detonators for blasting, actual field testing of detonator products of enterprises is impossible in the research and development testing stage, and in order to improve the quality and stability of products, the actual measurement environment maximization degree is required to be close to the actual blasting field networking environment, so that the obtained actual measurement data can be more realistic and convincing, and the quality and stability of detonator products can be ensured.
Disclosure of Invention
In order to solve the problems, the application provides a system and a method for simulating the networking environment of a blasting site, which can simulate the networking environment of the blasting site, are convenient for testing the performance of detonator products and ensure that the blasting site can be blasted successfully.
The technical scheme is as follows: a system for simulating a blast site networking environment, comprising:
the bus simulation module comprises a bus resistance simulation unit and a bus capacitance simulation unit, wherein the bus resistance simulation unit is used for simulating the resistance on a bus of a blasting site, which is used for connecting the blaster with the detonator, and the bus capacitance simulation unit is used for simulating the capacitance on the bus of the blasting site, which is used for connecting the blaster with the detonator;
the foot line simulation module comprises a foot line capacitance simulation unit and a leakage current simulation unit, wherein the leakage current simulation unit comprises a foot line adjustable resistor and a leakage current detection device which are connected in series, the foot line simulation module adjusts the foot line adjustable resistor to adjust the size of simulated tail end leakage current, the leakage current simulation unit is used for simulating leakage current existing in a circuit in a blasting field environment, and the foot line capacitance simulation unit is used for simulating capacitance on a foot line of a connecting bus and a detonator.
Further, the bus resistance simulation unit comprises a bus adjustable resistor, and the resistance value of the bus adjustable resistor is adjustable.
Furthermore, the bus capacitance simulation unit comprises a plurality of parallel branches, each parallel branch is provided with a bus simulation capacitor and a bus simulation switch which are connected in series, and the bus capacitance simulation is used for adjusting the capacitance on the simulated bus by controlling the on-off of the bus simulation switch on the parallel branch.
Furthermore, the foot line capacitance simulation unit comprises a plurality of parallel branches, each parallel branch is provided with a foot line simulation capacitor and a foot line simulation switch which are connected in series, and the foot line capacitance simulation is realized by controlling the opening and closing of the foot line simulation switches on the parallel branches to adjust the capacitance of the simulated foot line.
Furthermore, the bus analog switch and the foot line analog switch adopt jumper caps.
Furthermore, the leg line adjustable resistor and the leakage current detection device of the leakage current simulation unit are connected with the parallel branch of the leg line capacitance simulation unit in parallel.
Further, the leakage current detection device is an ammeter.
A method of simulating a blasting site networking environment, comprising the steps of:
determining the lengths of a bus and a foot line in a blasting site networking environment to be simulated, the size of leakage current at the tail end of the foot line and the number of loaded electronic detonators;
according to the length of the bus and the length and the number of the leg wires, calculating the equivalent resistance, the equivalent capacitance and the equivalent capacitance of the leg wires of the bus;
the resistance value of the bus adjustable resistor on the system simulating the blasting site networking environment is adjusted into the calculated bus equivalent resistance;
the capacitance values simulated by the bus capacitance simulation unit and the foot line capacitance simulation unit are respectively equal to the calculated bus equivalent capacitance and foot line equivalent capacitance by adjusting the opening and closing of the bus simulation switch and the foot line simulation switch on the parallel branch of the bus capacitance simulation unit and the foot line capacitance simulation unit;
setting up a blasting site networking environment, connecting an exploder, all electronic detonators and a system simulating the blasting site networking environment into the networking environment, switching the exploder to a time service interface, and adjusting the resistance value of the leg line adjustable resistor to enable the current value detected by the leakage current detection device to be equal to the size of the tail end leakage current to be simulated.
Further, when calculating the equivalent resistance of the bus, the bus resistance of a unit length is obtained by inquiring the specification of the bus, and the equivalent resistance of the bus is calculated by the following formula:
RL1＝2R mother and mother ×L1
Wherein RL1 is the equivalent resistance of the bus, R Mother and mother The resistance of a single bus bar per unit length, L1, is the length of the bus bar.
Further, the equivalent capacitance of the bus simulated by the system is expressed by the following formula:
C1＝2C mother and mother ×L1
Wherein C1 is the equivalent capacitance of the bus, C Mother and mother The capacitance value of a single bus bar in unit length is L1, and the length of the bus bar.
The equivalent capacitance of a single leg line of the system simulation is expressed by the following formula:
C foot support ＝C J ×L Foot support
Wherein C is Foot support Is the equivalent capacitance of a single foot line, L Foot support Length of leg line C J The capacitance value of a single leg wire per unit length.
According to the system for simulating the blasting site networking environment, the bus simulation module is arranged to simulate the capacitance and the resistance on the bus for connecting the blaster and the detonator in the blasting site, and the leg line simulation module is used to simulate the capacitance on the leg line for connecting the blaster and the detonator, as for the resistance on the leg line, the electronic detonators connected by the leg line are all connected in parallel and the number of detonators used in blasting is at least hundreds to thousands, according to the calculation formula of the resistance in parallel, when the number of parallel branches is many, the resistance of the parallel resistance can be ignored, so that the simulation for the capacitance and the resistance on the bus and the capacitance on the leg line of the blasting site networking environment can be completed; and for the simulation of the tail end leakage current, the foot line simulation module can be completed by arranging an extra foot line adjustable resistor and a current detection device on the parallel branch, the tail end leakage current can be regulated by regulating the resistance value of the foot line adjustable resistor, and the foot line adjustable resistor and the current detection device are arranged on the other parallel branch, so that the added parallel foot line adjustable resistor can be ignored under the condition of numerous parallel branches, and the parasitic capacitance of the system for simulating the blasting scene networking environment can be ignored compared with the equivalent capacitance of a bus bar.
Drawings
FIG. 1 is a schematic illustration of a networking environment at a blast site;
FIG. 2 is a block diagram of a system for simulating a blasting site networking environment in accordance with an embodiment of the present application;
FIG. 3 is a schematic diagram of a system for simulating a blasting site networking environment in accordance with an embodiment of the present application;
FIG. 4 is a schematic diagram of a busbar capacitance simulation unit;
fig. 5 is a schematic diagram of the structure of the pin line capacitance simulation unit.
Detailed Description
In the present application, the embodiments are merely intended to illustrate the scheme of the present application, and should not be construed as limiting.
It should also be noted herein that in embodiments of the present application, only a portion of the components or assemblies may be shown for clarity and simplicity, but those of ordinary skill in the art will appreciate that the components or assemblies may be added as needed for a particular scenario under the teachings of the present application. In addition, features of different embodiments of the application may be combined with each other, unless otherwise specified. For example, a feature of one embodiment may be substituted for a corresponding or functionally identical or similar feature of another embodiment, and the resulting embodiment would still fall within the scope of the disclosure or description of the application.
The numbers of the steps of the respective methods of the present application are not limited to the order of execution of the steps of the methods. The method steps may be performed in a different order unless otherwise indicated.
Referring to fig. 2 to 5, a system for simulating a blasting site networking environment according to the present application includes:
the bus simulation module 100, the bus simulation module 100 comprises a bus resistance simulation unit 110 and a bus capacitance simulation unit 120, the bus resistance simulation unit 110 is used for simulating the resistance on a bus connecting the detonator and the detonator at the blasting site, and the bus capacitance simulation unit 120 is used for simulating the capacitance on a bus connecting the detonator and the detonator at the blasting site;
the foot line simulation module 200 comprises a foot line capacitance simulation unit 210 and a leakage current simulation unit 220, wherein the leakage current simulation unit 210 comprises a foot line adjustable resistor 211 and a leakage current detection device 212 which are connected in series, the foot line simulation module 200 adjusts the size of the simulated tail end leakage current by adjusting the foot line adjustable resistor 211, and the foot line capacitance simulation unit 220 is used for simulating the capacitance on a foot line connected with a bus and a detonator;
the longer the bus bar length is known, the greater its equivalent resistance and capacitance. The equivalent resistance of the bus affects the lowest level at the end of the network, while the bus equivalent capacitance affects the rate of bus communication, thereby simulating bus resistance and bus capacitance by the bus simulation module 100.
In particular, in one embodiment of the present application, the bus resistance simulation unit 110 includes a bus adjustable resistor RL1, and the resistance value of the bus adjustable resistor RL1 is adjustable.
Bus bars in a blasting site are usually twisted pair wires, each wire in the twisted pair wires has a resistance value, and the calculation of the bus bar resistance can be performed through resistivity, wherein the resistivity is a physical quantity used for representing the resistance characteristics of a substance. The electrical resistance of a wire made of a material 1 meter long and having a cross-sectional area of 1 square millimeter is called the resistivity of the material. In the international system of units, the unit of resistivity is ohm meter, the wire resistance calculation formula is R= P L/A, wherein p is the resistivity of the substance, the unit is ohm meter (ohm. M),l is length in meters (m), A is cross-sectional area in square millimeters (mm) 2 )；
In one embodiment, the wire diameter used in the embodiment is 0.6mm 2 The bus resistance of the bus is 0.064 ohm/m, and because the bus is twisted pair, namely, both wires have resistance values, the equivalent bus length can be deduced from a formula to obtain the resistance value of the bus to be simulated by RL1 = 0.064 x 2L, after the length of the bus to be simulated is determined, the resistance value of the bus to be simulated can be calculated, and the bus adjustable resistance RL1 in the embodiment has the value range of 0-1K and the accuracy of 1 percent, and the bus resistance to be simulated can be obtained by adjusting the value of the bus adjustable resistance R1.
It is known that when capacitances are connected in parallel, the multi-capacitor parallel calculation formula is: for this purpose, the bus capacitance simulation unit 120 includes a plurality of parallel branches, each parallel branch is provided with a bus simulation capacitor and a bus simulation switch connected in series, the bus capacitance simulation is performed by controlling the on/off of the bus simulation switch on the parallel branch, the capacitance on the simulated bus is adjusted, and the equivalent capacitance of the bus is represented by the following formula:
C1＝Ca1+Cb1+Cc1+...+Cn1
wherein, C1 is the equivalent capacitance of the bus bar, cn1 is the capacitance value of the bus bar analog capacitance in the nth parallel branch.
In one embodiment, the bus bar cross-sectional area used in the embodiment was found to be 0.6mm 2 The parasitic capacitance of the unit length is 0.076nF/m, after the length of the bus needing to be simulated is determined, the capacitance value of the bus needing to be simulated can be calculated and obtained, and the equivalent capacitance of the bus simulated by the system is expressed by the following formula:
C1＝2C mother and mother ×L1
Wherein C1 is the equivalent capacitance of the bus, C Mother and mother The capacitance value of a single bus bar in unit length is L1, and the length of the bus bar.
In one embodiment, the capacitance value of the bus analog capacitor on each parallel branch is set to be the same, the capacitance value of the bus to be simulated is divided by a single bus analog capacitor, the number of parallel branches to be started can be obtained, and the number of the bus analog capacitors on the required parallel branch can be accessed by operating the switching of the bus analog switch.
In another embodiment, the bus analog capacitance settings on each parallel branch are different, wherein the capacitance value settings on a portion of the parallel branches are larger, so that the analog bus capacitance requirements can be achieved with fewer parallel branches.
In one embodiment, the bus analog switch adopts a jumper cap, the jumper cap is a movable component, the outer layer is insulating plastic, the inner layer is conductive material and can be inserted on the jumper pins, the two jumper pins are connected, and when the jumper cap is buckled on the two jumper pins, the jumper cap is in a connection state, and current passes through; otherwise, when the jumper wire cap is not buckled, the capacitor is disconnected, and the capacitor of the analog bus can be rapidly realized through the jumper wire cap.
In the blasting site networking environment, as the electronic detonators are connected in parallel, the leg wires for connecting the detonators are also connected in parallel, and according to a multi-capacitor parallel calculation formula of c=c1+c2+c3+ … +cn, in the application, a plurality of parallel branches are also arranged on the leg wire capacitance simulation unit 210, each parallel branch is provided with a leg wire simulation capacitor and a leg wire simulation switch connected in series, the leg wire capacitance simulation is performed by controlling the opening and closing of the leg wire simulation switch on the parallel branch, the capacitance on the simulated leg wire is adjusted, and the equivalent capacitance of the leg wire is represented by the following formula:
C2＝Ca2+Cb2+Cc2+...+Cn2
wherein, C2 is the equivalent capacitance of the leg wire, cn2 is the capacitance value of the leg wire analog capacitance in the nth parallel branch.
In one embodiment, the foot line analog switch adopts a jumper cap, and the capacitance of the analog foot line can be quickly realized through the jumper cap.
In the embodiment, ca 1-Cn 1 and Ca 2-Cn 2 can select the capacitance value of the high-precision common specification, and whether the corresponding capacitance is connected into the network in parallel can be realized by adding the jumper cap or not, so that the equivalent capacitance of the bus and the foot line can be easily changed, and the test is convenient.
In one embodiment, the device, via measurement,the cross-sectional area of the leg wire in the examples is 0.6mm 2 The parasitic capacitance is 0.058nF/m, and after the length and the number of the leg wires are known, the capacitance value of the leg wire to be simulated can be calculated and obtained. The equivalent capacitance of a single leg line of the system simulation is expressed by the following formula:
C foot support ＝C J ×L Foot support
Wherein C is Foot support Is the equivalent capacitance of a single foot line, L Foot support Length of leg line C J The capacitance value of a single leg wire per unit length.
Because each power generation electronic detonator is connected in parallel and is networked, the parallel formula of the resistor is adoptedIt can be known that the larger the networking number n is, the smaller the parallel resistance of the leg wires is, and in actual blasting, the fewer the number of the electronic detonators used is, so that in actual, the equivalent resistance of the leg wires is negligible in the system for simulating the networking environment of the blasting site.
In one embodiment, since there may be a leakage current at the end of the networking, in the embodiment, a leakage current simulation unit 210 is further provided, where the leakage current simulation unit 210 includes a leg line adjustable resistor RL2 and an ammeter a connected in series, and the leg line simulation module 200 adjusts the size of the simulated end leakage current by adjusting the leg line adjustable resistor 211, and the leakage current simulation unit is used for simulating the leakage current caused by the presence of water or other liquids in the blasting field environment;
the leg line adjustable resistor of the leakage current simulation unit 220 and the branch where the leakage current detection device is located are connected in parallel with the parallel branch of the leg line capacitance simulation unit 210, so that the resistance value of the leg line adjustable resistor RL2 can be ignored, and for the leakage current detection device, the ammeter a can be used for realizing rapid display of the reading, and the desired leakage current can be conveniently obtained.
The system for simulating the networking environment of the blasting site, which is provided by the embodiment, can be used for flexibly simulating real environments such as a bus, a foot line, leakage current and the like of the blasting site in a laboratory to obtain experimental test data which are relatively close to the site, and provides data support for improving the reliability and the stability of products.
In an embodiment of the present application, there is also provided a method for simulating a blasting site networking environment, including the steps of:
step S1, determining the lengths of a bus and a foot line in a blasting site networking environment to be simulated, the size of leakage current at the tail end of the foot line and the number of loaded electronic detonators;
step S2, calculating the equivalent resistance, the equivalent capacitance and the equivalent capacitance of the leg wires according to the length of the bus and the length and the number of the leg wires;
step S3, adjusting the resistance value of the bus adjustable resistor on the system simulating the blasting site networking environment in the embodiment into the calculated equivalent resistance of the bus;
s4, adjusting the opening and closing of a bus analog switch and a foot line analog switch on a parallel branch of a bus capacitance analog unit and a foot line capacitance analog unit to enable capacitance values simulated by the bus capacitance analog unit and the foot line capacitance analog unit to be respectively equal to the calculated bus equivalent capacitance and foot line equivalent capacitance;
and S5, constructing a blasting site networking environment, switching the exploder, all electronic detonators and a system simulating the blasting site networking environment into the networking environment, switching the exploder to a time service interface, adjusting the resistance value of the adjustable resistor of the leg wire, enabling the current value detected by the leakage current detection device to be equal to the magnitude of the tail end leakage current required to be simulated, and electrifying the whole system when switching to the time service interface, wherein the tail end leakage current can be adjusted under the state.
Through the steps, the simulation of the networking environment of the blasting site can be completed, and networking performance indexes including the load quantity, the length of the bus, the length of the leg wire and the size of the tail end leakage current in the whole large network environment are met.
The system and the method for simulating the networking environment of the blasting site are adopted, can accurately simulate the networking environment of the blasting site, are convenient for testing the performance of detonator products and ensure the successful blasting of the blasting site, are favorable for improving the safety of the blasting operation, are convenient for eliminating quality defects and functional disorders in the networking environment of the blasting site, and have high safety coefficient.
It will be evident to those skilled in the art that the application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. A system for simulating a blast site networking environment, comprising:
the bus simulation module comprises a bus resistance simulation unit and a bus capacitance simulation unit, wherein the bus resistance simulation unit is used for simulating the resistance on a bus of a blasting site, which is used for connecting the blaster with the detonator, and the bus capacitance simulation unit is used for simulating the capacitance on the bus of the blasting site, which is used for connecting the blaster with the detonator;
the foot line simulation module comprises a foot line capacitance simulation unit and a leakage current simulation unit, the leakage current simulation unit comprises a foot line adjustable resistor and a leakage current detection device which are connected in series, the foot line simulation module adjusts the size of simulated tail end leakage current by adjusting the foot line adjustable resistor, the leakage current simulation unit is used for simulating leakage current existing in a circuit in a blasting field environment, and the foot line capacitance simulation unit is used for simulating capacitance on a foot line connecting a bus and a detonator;
the bus capacitance simulation unit comprises a plurality of parallel branches, each parallel branch is provided with a bus simulation capacitor and a bus simulation switch which are connected in series, and the bus capacitance simulation unit adjusts the capacitance of a simulated bus by controlling the on-off of the bus simulation switch on the parallel branch;
the bus analog switch adopts a jumper cap;
the foot line adjustable resistor of the leakage current simulation unit and the leakage current detection device are connected in parallel with the parallel branch of the foot line capacitance simulation unit, and the leakage current detection device is an ammeter.
2. A system for simulating a blasting site networking environment in accordance with claim 1, wherein: the bus resistance simulation unit comprises a bus adjustable resistor, and the resistance value of the bus adjustable resistor is adjustable.
3. A system for simulating a blasting site networking environment in accordance with claim 1, wherein: the foot line capacitance simulation unit comprises a plurality of parallel branches, each parallel branch is provided with a foot line simulation capacitor and a foot line simulation switch which are connected in series, and the foot line capacitance simulation unit adjusts the capacitance on the simulated foot line by controlling the opening and closing of the foot line simulation switches on the parallel branches.
4. A system for simulating a blast-site networking environment in accordance with claim 3, wherein: the foot line analog switch adopts a jumper wire cap.
5. A method for simulating a blasting site networking environment is characterized by comprising the following steps of: the method comprises the following steps:
determining the lengths of a bus and a foot line in a blasting site networking environment to be simulated, the size of leakage current at the tail end of the foot line and the number of loaded electronic detonators;
according to the length of the bus and the length and the number of the leg wires, calculating the equivalent resistance, the equivalent capacitance and the equivalent capacitance of the leg wires of the bus;
adjusting the resistance value of the bus adjustable resistor on the system simulating the blasting site networking environment as claimed in claim 2 into the calculated equivalent resistance of the bus;
the capacitance values simulated by the bus capacitance simulation unit and the foot line capacitance simulation unit are respectively equal to the calculated bus equivalent capacitance and foot line equivalent capacitance by adjusting the opening and closing of the bus simulation switch and the foot line simulation switch on the parallel branch of the bus capacitance simulation unit and the foot line capacitance simulation unit;
setting up a blasting site networking environment, connecting an exploder, all electronic detonators and a system simulating the blasting site networking environment into the networking environment, switching the exploder to a time service interface, and adjusting the resistance value of a leg line adjustable resistor to enable the current value detected by a leakage current detection device to be equal to the size of the tail end leakage current to be simulated.
6. A method of simulating a blasting site networking environment in accordance with claim 5, wherein: when calculating the equivalent resistance of the bus, obtaining the bus resistance of unit length by inquiring the specification of the bus, wherein the equivalent resistance of the bus is calculated by the following formula:
RL1=2R mother and mother ×L1；
Wherein RL1 is the equivalent resistance of the bus, R Mother and mother The resistance of a single bus bar per unit length, L1, is the length of the bus bar.
7. A method of simulating a blasting site networking environment in accordance with claim 6, wherein: the equivalent capacitance of the bus of the system simulation is expressed by the following formula:
C1=2C mother and mother ×L1；
Wherein C1 is the equivalent capacitance of the bus, C Mother and mother The capacitance value of a single bus in unit length is L1, the length of the bus, and the equivalent capacitance of a single leg wire simulated by the system is expressed by the following formula:
C foot support =C J ×L Foot support ；
Wherein C is Foot support Is the equivalent capacitance of a single foot line, L Foot support Length of leg line C J The capacitance value of a single leg wire per unit length.
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