CN217637012U - Two-bus double-resistance circuit for improving reliability of electronic detonator initiator and initiator - Google Patents
Two-bus double-resistance circuit for improving reliability of electronic detonator initiator and initiator Download PDFInfo
- Publication number
- CN217637012U CN217637012U CN202220855253.7U CN202220855253U CN217637012U CN 217637012 U CN217637012 U CN 217637012U CN 202220855253 U CN202220855253 U CN 202220855253U CN 217637012 U CN217637012 U CN 217637012U
- Authority
- CN
- China
- Prior art keywords
- bus
- resistor
- circuit
- sampling
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides an improve two bus double resistance circuit and exploder of electron detonator exploder reliability, include: the bus protection circuit comprises a bus driving circuit, a first bus, a second bus, a first current-limiting sampling resistor R1, a first protection resistor R3, a second current-limiting sampling resistor R2, a second protection resistor R4, a first bus sampling circuit and a second bus sampling circuit; first bus and second bus are connected with bus drive circuit, first current-limiting sampling resistance R1 and first protection resistance R3 establish ties on first bus, second current-limiting sampling resistance R2 and second protection resistance R4 establish ties on the second bus, first bus sampling circuit connects between first current-limiting sampling resistance R1 and first protection resistance R3, second bus sampling circuit connects between second current-limiting sampling resistance R2 and second protection resistance R4. The circuit meets the sampling requirement and the communication voltage requirement, and the resistor cannot be blown when the bus is short-circuited.
Description
Technical Field
The utility model relates to an electron detonator technical field specifically relates to a two bus double resistance circuit and exploder of improvement electron detonator exploder reliability.
Background
The explosive is a substance which can be violently burnt (i.e. exploded) in a very short time, and can be exploded by self energy under the action of certain external energy. Generally, the chemical property, i.e. the physical property of the explosive is stable, but no matter whether the environment is sealed or not, the amount of the explosive is large or small, even under the condition of zero oxygen supply from the outside, the explosive can do stable detonation work on the outside as long as strong energy (provided by the initiating explosive) is excited. When the explosive explodes, a large amount of heat energy can be released, high-temperature and high-pressure gas is generated, and the surrounding substances are damaged, thrown, compressed and the like. Due to the characteristics of the explosive, once the explosive is abnormally detonated or flows into the society, the safety and stability of the society are seriously damaged, and the safety of the state and the property of people is greatly threatened. Therefore, monitoring of the explosive is essential and important.
Explosive articles typically include explosives and initiating devices. The initiating device comprises an initiating bomb, an initiating detonator, an oil perforating bomb used in the oil field, a seismic charge used in the geological exploration field and the like. The priming detonator comprises an electronic detonator, a detonating tube detonator, a digital electronic detonator and the like.
Two buses of the existing electronic detonator initiator are respectively connected with a resistor in series for current limiting and sampling, however, once the two buses are short-circuited, the resistors connected in series on the buses are easily blown due to overlarge power, and thus line faults are caused. The distance between two wiring terminals of two buses is separated on a shell to the greatest extent to improve the condition that the detonator is damaged frequently due to the fact that workers are not standard or the environment is severe and bus short circuit is caused by abrasion of the bus skin when field operation is carried out, and the reliability and the efficiency of the field are seriously influenced.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing an improve two bus double resistance circuit and exploders of electron detonator exploder reliability.
According to the utility model provides a pair of two bus double resistance circuit that improve electron detonator initiator reliability, include: the bus protection circuit comprises a bus driving circuit, a first bus, a second bus, a first current-limiting sampling resistor R1, a first protection resistor R3, a second current-limiting sampling resistor R2, a second protection resistor R4, a first bus sampling circuit and a second bus sampling circuit;
the first bus and the second bus are connected with a bus driving circuit, the first current-limiting sampling resistor R1 and the first protection resistor R3 are connected on the first bus in series, the second current-limiting sampling resistor R2 and the second protection resistor R4 are connected on the second bus in series, the first bus sampling circuit is connected between the first current-limiting sampling resistor R1 and the first protection resistor R3, and the second bus sampling circuit is connected between the second current-limiting sampling resistor R2 and the second protection resistor R4;
the resistance value ranges of the first protection resistor R3 and the second protection resistor R4 are determined according to the resistance value of R1 or R2, the bus voltage and the maximum power of the resistor.
Preferably, the voltage of the first bus and the second bus is in the range of 8-20V.
Preferably, the resistance values of the first current-limiting sampling resistor R1 and the second current-limiting sampling resistor R2 range from 5 Ω to 20 Ω.
According to the utility model provides a pair of electron detonator exploder, including the two bus two resistance circuit of foretell improvement electron detonator exploder reliability.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses a structure of two bus double resistance series connection of exploder of innovation has not only satisfied sampling demand and communication voltage requirement, and resistance can not blow even when the bus short circuit.
2. The utility model discloses a circuit structure is simple, low cost.
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 circuit diagram of a two-bus dual-resistor circuit of the present invention;
fig. 2 is a circuit diagram of a two-bus dual resistor circuit in the prior art.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
The utility model discloses an improve two bus double resistance circuits of electron detonator exploder reliability refers to figure 1, include: the bus sampling circuit comprises a bus driving circuit, a first bus, a second bus, a first current-limiting sampling resistor R1, a first protection resistor R3, a second current-limiting sampling resistor R2, a second protection resistor R4, a first bus sampling circuit and a second bus sampling circuit.
First bus and second bus are connected with bus drive circuit, first current-limiting sampling resistance R1 and first protection resistance R3 establish ties on first bus, second current-limiting sampling resistance R2 and second protection resistance R4 establish ties on the second bus, first bus sampling circuit connects between first current-limiting sampling resistance R1 and first protection resistance R3, second bus sampling circuit connects between second current-limiting sampling resistance R2 and second protection resistance R4.
The bus driving circuit realizes the simultaneous transmission of power and signals on the first bus and the second bus through a special bridge chip. The first bus sampling circuit realizes sampling of the first bus current through a first current-limiting sampling resistor R1. The second bus sampling circuit realizes sampling of the second bus current through a second current-limiting sampling resistor R2.
The bus driving circuit is connected with the first bus through two resistors of a first current-limiting sampling resistor R1 and a first protection resistor R3, and is connected with the second bus through two resistors of a second current-limiting sampling resistor R2 and a second protection resistor R4. A measuring circuit of the first bus (measuring the voltage across R1) is connected between the first current-limiting sampling resistor R1 and the first protection resistor R3, and a measuring circuit of the second bus (measuring the voltage across R2) is connected between the second current-limiting sampling resistor R2 and the second protection resistor R4.
Fig. 2 is a schematic diagram of a two-bus circuit in the conventional electronic detonator initiator, wherein a bus driving circuit generates two buses a and B by limiting current through two resistors R1 and R2, and a measuring circuit of the two buses a and B is connected to the lower ends of the R1 and R2.
The two functions of R1 and R2 are that the first is used as a current-limiting resistor of the two buses, and the second is used as a sampling resistor of the two buses.
The voltage generated by the bus driving circuit in the circuit is usually 8V-20V, R1 and R2, and the selected resistance value is 5-20 omega. Because the two-bus reading function of the electronic detonator is realized by current feedback, namely by analyzing the voltage sampling of the two resistors R1 and R2, the resistance values of the resistors R1 and R2 can not be randomly selected, but have a very strict selection range. The existing electronic detonator initiator does not consider whether R1 and R2 can be damaged or not under the condition of short circuit of the two buses in order to simultaneously take sampling and current limiting effects into consideration.
The following table calculates the power of R1, R2 in the event of a two-bus short circuit under different conditions.
Because the electronic detonator initiator is limited by group standard specifications and has limited volume, the resistor volume in the initiator is not easy to be overlarge. The maximum power of the large package of the conventional chip resistor 2512 is only 2W, and the resistor is blown when the power exceeds 3W.
As shown in the above table, if the power of R1 and R2 during short circuit is considered, only three types of bus voltage 8V + resistor 10 Ω, bus voltage 8V + resistor 20 Ω, and bus voltage 12V + resistor 20 Ω can be selected, and in actual use, the resistors need to be used as sampling resistors, the selection of the resistance values of the resistors is strictly limited, and the communication voltage of the initiator is generally 20V or more due to the networking requirement. Therefore, when the two buses are short-circuited, R1 and R2 are easily blown due to excessive power.
When the electronic detonator is subjected to field networking detonation, the bus of the detonator is easily short-circuited due to irregular operation of operators, so that the components of the detonator are damaged and need to be repaired, and the actual use is influenced.
The scheme of the invention can perfectly solve the problem. In fig. 1, a first current-limiting collection resistor R1 and a second current-limiting collection resistor R2 are used as sampling resistors in the original scheme, and a first protection resistor R3 and a second protection resistor R4 are added to further limit the current of the bus, so that the limitation of the size of the sampling resistor and the size of the bus voltage is met, and the principle that the resistors cannot be blown when the two buses are in short circuit is also met.
The following table lists only some of the cases where R1= R2 and R3= R4.
The above table provides various schemes of meeting the requirements of the initiator and considering resistance power, and a first current-limiting acquisition resistor R1 and a second current-limiting acquisition resistor R2 in the circuit, and a first protection resistor R3 and a second protection resistor R4 can also select other resistors with different resistance values according to the requirements.
Considering the characteristic that the two buses of the electronic detonator are not different in polarity, the resistance values on the two paths of the two buses must be the same. R1 and R2 are the same and R3 and R4 are the same, i.e. R3= R4. The specific values of R3 and R4 mainly ensure that the resistor cannot be burnt out when the bus is short-circuited.
Assuming that the maximum power of the resistor which is not burnt is P, the values of R1 and R2 are Rs, the resistance values of R3 and R4 are Rp, the voltage on the bus is U, and the current is equal to the current when the bus is in short circuit
The power on the resistors R1, R2 is
Ps must satisfy Ps < P, from which it is deduced that Rp must satisfy
Meanwhile, as the power on the R3 and the R4 also needs to satisfy Pp < P, and as the R1, the R2, the R3 and the R4 are connected in series and have equal currents, it is only required to ensure that the resistances of the R3 and the R4 are smaller than those of the R1 and the R2, namely, the following conditions are satisfied: rp < = Rs, and in general, the value ranges of R3 and R4 are determined by the following formula:
such as: rs is 10ohm, the maximum power P =3W and U =20V, and the value range of Rp can be calculated to be 8.26-10 ohm according to the formula, and a value can be selected in the range.
According to the selectable range of the sampling resistor, the output voltage of the bus driving circuit can be selected by various selection schemes. The resistance sampling and the bus current limiting are considered, and meanwhile, the irreversible damage caused by the fact that the resistance is blown when the two buses are in short circuit is avoided.
The utility model also discloses an electron detonator exploder, two bus pair resistance circuit including foretell improvement electron detonator exploder reliability.
The foregoing description of the specific embodiments of the 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 essential 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 (4)
1. A two bus pair resistance circuit that improve electronic detonator exploder reliability which characterized in that includes: the bus protection circuit comprises a bus driving circuit, a first bus, a second bus, a first current-limiting sampling resistor R1, a first protection resistor R3, a second current-limiting sampling resistor R2, a second protection resistor R4, a first bus sampling circuit and a second bus sampling circuit;
the first bus and the second bus are connected with a bus driving circuit, the first current-limiting sampling resistor R1 and the first protection resistor R3 are connected on the first bus in series, the second current-limiting sampling resistor R2 and the second protection resistor R4 are connected on the second bus in series, the first bus sampling circuit is connected between the first current-limiting sampling resistor R1 and the first protection resistor R3, and the second bus sampling circuit is connected between the second current-limiting sampling resistor R2 and the second protection resistor R4;
the resistance value ranges of the first protection resistor R3 and the second protection resistor R4 are determined according to the resistance value of R1 or R2, the bus voltage and the maximum power of the resistors.
2. The two-bus double-resistor circuit for improving the reliability of the electronic detonator initiator according to claim 1, wherein: the voltage range of the first bus and the second bus is 8-20V.
3. The two-bus double-resistor circuit for improving the reliability of the electronic detonator initiator according to claim 1, wherein: the resistance ranges of the first current-limiting sampling resistor R1 and the second current-limiting sampling resistor R2 are 5-20 omega.
4. An electronic detonator initiator, characterized in that: comprising a two-bus dual-resistance circuit according to any of claims 1-3 for improving reliability of an electronic detonator initiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220855253.7U CN217637012U (en) | 2022-04-12 | 2022-04-12 | Two-bus double-resistance circuit for improving reliability of electronic detonator initiator and initiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220855253.7U CN217637012U (en) | 2022-04-12 | 2022-04-12 | Two-bus double-resistance circuit for improving reliability of electronic detonator initiator and initiator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217637012U true CN217637012U (en) | 2022-10-21 |
Family
ID=83648721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220855253.7U Active CN217637012U (en) | 2022-04-12 | 2022-04-12 | Two-bus double-resistance circuit for improving reliability of electronic detonator initiator and initiator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217637012U (en) |
-
2022
- 2022-04-12 CN CN202220855253.7U patent/CN217637012U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11686566B2 (en) | Electronic ignition circuit | |
| DE602004011616T2 (en) | FENCER WHICH IS BASED ON MEASURED VOLTAGE BETWEEN LOGGER AND BZW. SELECT SPRING MODE | |
| KR101815512B1 (en) | Triggering Device for a non-electric type Detonator using the Tunnel Blasting | |
| CA2149154C (en) | Expendable ebw firing module for detonating perforating gun charges | |
| US11307011B2 (en) | Electronic initiation simulator | |
| CN112254592A (en) | Front-end control circuit of electronic detonator | |
| CN217637012U (en) | Two-bus double-resistance circuit for improving reliability of electronic detonator initiator and initiator | |
| CN112361904A (en) | Electric detonator for exciting plasma igniter based on analog circuit delay element | |
| CN201935635U (en) | Electronic delay ignition device | |
| JP2634824B2 (en) | Electronic delay primer | |
| CN111735354A (en) | Electronic detonator ignition head reliability detection circuit, method and chip | |
| KR102634773B1 (en) | Triggering apparatus controlled by mcu for nonelectric detonator and triggering method and system of nonelectric detonator using thereof | |
| CN217032216U (en) | Safe type electron detonator control module | |
| CN113375510A (en) | High-safety electronic delay electric energy excited miniature detonator | |
| CN114152157B (en) | Excitation self-checking system for on-line state of digital electronic detonator | |
| CN215491345U (en) | High-safety electronic delay electric energy excited micro detonator | |
| CN213932246U (en) | Electric detonator based on plasma igniter excited by analog circuit delay element | |
| CN109539911B (en) | External high-voltage energy-storage digital circuit triggering high-voltage plasma ignition safety electric detonator | |
| CN216308787U (en) | Control circuit for electronic detonator, electronic detonator and electronic equipment | |
| CN215009584U (en) | Chip protection circuit of electronic detonator | |
| CN220729050U (en) | Digital electronic detonator discharging control circuit, control module and PCB assembly | |
| CN216774268U (en) | Self-recovery intrinsic safety output circuit | |
| CN212673964U (en) | High-stability front-end control module for electronic detonator initiator | |
| JPS6039669Y2 (en) | igniter | |
| CN117308709A (en) | Electronic detonator control module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |