CN217275840U - Digital electronic detonator initiator for coal mine - Google Patents
Digital electronic detonator initiator for coal mine Download PDFInfo
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- CN217275840U CN217275840U CN202220985102.3U CN202220985102U CN217275840U CN 217275840 U CN217275840 U CN 217275840U CN 202220985102 U CN202220985102 U CN 202220985102U CN 217275840 U CN217275840 U CN 217275840U
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Abstract
The utility model provides a satisfy the people and explode industry standard and coal mine safety standard's permissible digital electronic detonator exploder in colliery. The utility model discloses connect through two-stage communication protection circuit between priming controller host system and the digital electronic detonator communication module, not only detect the digital electronic detonator communication of coal permission and the staged on-control of detonation, simultaneously through two-stage current-limiting voltage-limiting protection, protect the detonator promptly and detect and detonation control circuit's current-voltage not only satisfy digital electronic detonator communication and detect and the required energy of detonation, and accord with essential safety requirement, can not generate heat or electric arc electric spark etc. because of the component and ignite dangerous mist, also can not make the detonator take place the mistake and explode because of the trouble, thereby the security of electronic detonator blasting has been improved, especially, be fit for mining or have the blasting under the special environment of inflammable and explosive gas.
Description
Technical Field
The utility model relates to a civil explosion technical field specifically is a digital electronic detonator exploder is used to colliery permission.
Background
The coal mine is a special industry, the underground environment of the coal mine is severe, the influence of environmental factors such as gas, dust, water, fire and the like brings great challenges to the safety of the underground blasting operation of the coal mine, and the coal mine has strict requirements on products used in the coal mine such as current, electrifying time and the like.
With the rapid development of digital electronic detonators in China, the allowable coal mine electronic detonators which are one of important scenes in blasting application are still in a preliminary exploration stage, but the research and development of the allowable coal mine electronic detonators and the detonation control equipment thereof are imperative along with the comprehensive application and popularization policy of the national digital electronic detonators. The use of the detonation controller in a coal mine can be interfered by various factors, such as static electricity, power frequency interference, radiation and the like, and communication interference, even equipment damage and potential safety hazards can be caused. At present, an initiator used in domestic and overseas coal mines is an explosion-proof electric detonator initiator, and aiming at the fact that an ignition controller of an intrinsically safe coal mine allowable electronic detonator is still in a blank stage, the development meets the part 1 of GB 3836.1-2010 explosive environment: general requirements for equipment and part 4 of the explosive environment of GB 3836.4-2010: the coal-to-many digital electronic detonator initiator of the intrinsically safe i-protected equipment becomes an urgent need in the popularization process of the coal-to-many digital electronic detonators. The coal-permitted digital electronic detonator initiator meets the requirement of coal-permitted intrinsic safety circuits on one hand, and can realize blasting control and provide energy required by blasting of the digital electronic detonator on the other hand, so that the coal-permitted digital electronic detonator initiator becomes a key core technology which needs to overcome.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a satisfy the civil blasting industry standard and coal mine safety standard's allowable digital electronic detonator exploder in colliery can reach the required energy of detonating of digital electronic detonator, accords with the supervision of coal mine safety application in the pit again, safe type coal mine allowable digital electronic detonator exploder, fills this safe type coal mine allowable electronic detonator initiation controller blank.
In order to achieve the above purpose, the technical scheme of the utility model is that:
digital electron detonator exploder is used in permission in colliery includes host system and the display module, button module, orientation module, authentication module, storage module, system power module, supervision platform communication module and digital electron detonator communication module who are connected with host system respectively, wherein:
the main control module is used for controlling the communication between the monitoring platform communication module and a third-party monitoring platform, and the storage module and the digital electronic detonator communication module are communicated with an upper computer or a digital electronic detonator, the main control module receives input information of the key module and directly or after processing the input information and outputs the input information to the display module, the main control module controls the identity authentication module to carry out personnel identity verification, and the main control module controls the positioning module to realize the positioning of the detonator and the comparison of the position information;
the display module is used for displaying received and input information;
the key module is used for inputting information to the main control module;
the positioning module is used for receiving and executing the control command sent by the main control module and sending the position information of the initiator to the main control module under the control of the main control module;
the identity authentication module is used for performing identity authentication on an operator;
the storage module is used for storing the data received and sent by the main control module, as well as a detonation log and an operation log;
the system power supply module supplies power to each module and performs power supply management;
the monitoring platform communication module is in communication connection with a third-party monitoring platform and is used for the main control module to bidirectionally communicate with the third-party monitoring platform, send initiator positioning, identity authentication and initiation application information and receive initiation authorization information;
the digital electronic detonator communication module is connected with the digital electronic detonator, and is connected with the main control module through the two-stage communication protection circuit, so that the main control module and the digital electronic detonator can be in bidirectional communication; the two-stage communication protection circuit comprises a communication detection two-stage protection circuit and a detonation control two-stage protection circuit; the communication detection two-stage protection circuit is used for limiting the current and voltage of the main control module and the digital electronic detonator in the communication detection process within an intrinsic safety range and realizing safety protection; the detonation control two-stage protection circuit is used for limiting the current and voltage of the main control module and the digital electronic detonator in the detonation control process within an intrinsic safety range and realizing safety protection; the intrinsic safety voltages limited by the communication detection two-stage protection circuit and the detonation control two-stage protection circuit are different, and the intrinsic safety voltage of the communication detection two-stage protection circuit is lower than the intrinsic safety voltage of the detonation control two-stage protection circuit.
Furthermore, the two-stage communication protection circuit comprises a communication power supply protection circuit I serving as a first-stage protection circuit, a communication stage protection circuit II serving as a second-stage protection circuit and a detonation stage protection circuit II; the communication power supply protection circuit I is a switching circuit, the communication stage protection circuit II and the detonation stage protection circuit II are respectively connected with the communication power supply protection circuit I, the communication stage protection circuit II and the communication power supply protection circuit I are connected to form a communication detection two-stage protection circuit, and the detonation stage protection circuit II and the communication power supply protection circuit I are connected to form a detonation control two-stage protection circuit.
Further preferably, the input end of the communication stage protection circuit ii is connected to the communication power supply module, the communication power supply module is connected to the main control module, and the output end of the communication stage protection circuit ii is connected to the input end of the communication power supply protection circuit i to form a communication detection two-stage protection circuit; the input end of the detonation stage protection circuit II is connected with a detonation power supply module, the detonation power supply module is connected with a main control module, and the output end of the detonation stage protection circuit II is connected with the input end of the communication power supply protection circuit I to form a detonation control two-stage protection circuit; the output end of the communication power supply protection circuit I is connected with the input end of the digital electronic detonator communication module; and the main control module controls the communication power supply module and the initiation power supply module to supply power on/off so as to control the communication stage protection circuit II and the initiation stage protection circuit II to be started/closed.
Furthermore, the initiator also comprises a scanning head, and the scanning head is connected with the main control module and is used for scanning and verifying the coal-permitted digital electronic detonators.
Furthermore, the detonator also comprises a buzzer, and the buzzer is connected with the main control module and used for receiving and sending information by the main control module to remind the abnormal condition to alarm.
Furthermore, the supervision platform communication module is a Bluetooth and a mobile phone connected with the Bluetooth, and APP software for detonation communication is arranged on the mobile phone.
The utility model discloses coal mine electricity allowed digital electronic detonator detonation control method includes following steps:
the method comprises the following steps: self-test
The digital electronic detonator initiator is subjected to power-on self-test;
step two: identity verification
Performing identity verification on an operator, and if the verification passes the next operation, otherwise, enabling the digital electronic detonator initiator to be in a standby state;
step three: registering digital electronic detonators
The primer registers the digital electronic detonator, connects the digital electronic detonator leg wire to the primer, and the primer detects and displays the result of the digital electronic detonator;
step four: detonation application and authorization
The detonation application information comprises detonation positioning information, detonation construction related information, the number of digital electronic detonators and work code information thereof; the third-party supervision platform sends authorization information after receiving the approval of the detonation application information, the detonator receives the detonation authorization information through the supervision platform communication module, the detonator verifies and decrypts the detonation authorization information and the registered digital electronic detonator information, the verification includes the verification of the detonation range, the validity period of the password of the digital electronic detonator and the information of the detonation time, and the decryption processing is carried out on a work code consisting of a UID code of the digital electronic detonator, the detonation password and a shell code of the detonator; if the verification is not qualified and/or the decryption is failed, the detonator gives a buzzing alarm prompt and networking is forbidden; if the verification is in accordance with the requirement and/or the decryption is successfully in accordance with the requirement, the next step of networking detection is carried out;
step five: networking detection
The detonator main control module controls to open a switch of the communication power supply module, at the moment, the communication stage protection circuit II is in conduction connection with the communication power supply protection circuit I to form a communication detection two-stage protection circuit, the communication detection two-stage protection circuit is connected with the digital electronic detonator through the digital electronic detonator communication module, the communication power supply module charges the communication detection two-stage protection circuit to reach a communication voltage value required by networking detection, bridge wire detection, detonation capacitance detection and detonation capacitance charging and discharging circuit detection of the registered digital electronic detonator are carried out, and whether the digital electronic detonator is off-line or not is judged; in the networking detection process, the communication detection two-stage protection circuit limits the detection voltage and current not to exceed a limit value, and meets the requirement of an intrinsic safety circuit;
step six: charging of electricity
The detonation control two-stage protection circuit is connected with the digital electronic detonator through the digital electronic detonator communication module, and the detonation power supply module charges the detonation control two-stage protection circuit to reach a voltage value required by detonation; in the charging process, the two-stage protection circuit is controlled by the detonation to limit the detection voltage and current not to exceed a limit value, so that the requirement of the intrinsic safety circuit is met;
step seven: initiation of detonation
After the main control module sends a detonation instruction, the detonation instruction reaches a digital electronic detonator through a detonation stage protection circuit II, a connection communication power supply protection circuit I and a digital electronic detonator communication module, the digital electronic detonator starts a detonation switch, a detonation capacitor discharges bridge wires, and the digital electronic detonator detonates;
step eight: data backup
The storage module backups all blasting data and returns the data to the monitoring platform in real time or periodically so as to be convenient for inquiry and tracing.
Furthermore, the main control module of the initiator sends an instruction to the digital electronic detonator, the instruction carries check bytes, the digital electronic detonator check processing fails without passing the instruction, and the instruction is prevented from being sent by mistake.
Further, the voltage is lower than the detonation voltage, so that the risk of false detonation in the detection process is reduced, and the safety is improved.
Further, the method for registering the digital electronic detonator by the initiator in the third step comprises scanning and registering by the scanning head, carrying out charged contact registration by the wiring terminal or directly importing the information of the digital electronic detonator into an upper computer for non-electric registration.
The coal-permitted digital electronic digital detonator initiation controller is subjected to various interferences such as static electricity, power frequency interference, radiation and the like when used in a coal mine, and communication interference and even hidden dangers of equipment, damage and safety can be caused. In order to avoid interference on the functional influence of the detonation controller and the damage of devices, the detonation controller adopts a multiple protection technology to protect equipment. The utility model discloses on satisfying the basic function basis of realization blasting operation flow, combine many digital electronic digital detonator detonation controller of coal mine underground environment characteristics design and detonation control method, the advantage lies in:
1. the detonation controller is internally provided with a two-stage communication protection circuit with a voltage limiting function and a current limiting function, not only is the detection and the detonation of the coal-permitted digital electronic detonator conducted and controlled in stages, but also the current and the voltage of a communication power supply module and a detonation power supply module discharge circuit are limited through two-stage current limiting and voltage limiting protection, so that the energy required by the communication detection and the detonation of the digital electronic detonator is met, the intrinsic safety requirement is met, dangerous mixed gas cannot be ignited due to element heating or electric arc electric sparks and the like, the detonator cannot be mistakenly detonated due to mine faults, the blasting safety of the electronic detonator is improved, and the detonation controller is particularly suitable for blasting in a special environment with flammable and explosive gas;
2. the voltage of the communication detection protection two-stage protection circuit in the two-stage protection circuit is lower than the voltage of the detonation control two-stage protection circuit, namely the voltage in the communication detection stage is lower than the detonation voltage, so that the false detonation during the networking detection is avoided, and the detonation control safety is further improved;
3. the communication of the initiation controller adopts check processing, and the interfered message is not processed, so that the phenomenon of false alarm is avoided;
the utility model discloses satisfy citizen and explode industrial standard and coal mine safety standard, can reach the required energy of detonation of digital electronic detonator, accord with colliery safety application's prison type, safe type colliery permissible digital electronic detonator exploder and detonation control method in the pit again, filled this ampere of type colliery permissible electronic detonator detonation controller blank.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and embodiments:
FIG. 1 is a schematic structural diagram of a permissible digital electronic detonator initiator for coal mines in example 1;
FIG. 2 is a flowchart of a method for controlling initiation of an electric digital electronic detonator permitted for a coal mine in embodiment 1;
FIG. 3 is a schematic diagram of a communication power supply protection circuit I of the two-stage communication protection circuit of FIG. 1;
fig. 4 is a schematic structural diagram of a communication stage protection circuit ii and a communication power module of the communication detection two-stage protection circuit in fig. 1;
FIG. 5 is a schematic diagram of the detonation stage protection circuit II and the detonation power supply module of the detonation control two-stage protection circuit in FIG. 1;
FIG. 6 is a simplified circuit diagram of FIG. 4;
fig. 7 is a simplified circuit diagram of fig. 5.
Detailed Description
The invention will be further explained with reference to specific embodiments, but the scope of protection of the invention is not limited to the content of the examples.
Example 1
In order to solve the problem that the digital electronic detonator initiator meets the coal mine safety standard, the digital electronic detonator initiator can reach the required initiation energy of the digital electronic detonator under the premise of meeting the civil explosion industry standard and the coal mine safety standard, and also meets the supervision type and safety type coal mine allowable digital electronic detonator initiator and initiation control method applied to the coal mine safety, as shown in fig. 1, the utility model provides a coal mine allowable digital electronic detonator initiator, which comprises a main control module, and a display module, a key module, a positioning module, an identity authentication module, a storage module, a scanning head, a buzzer, a system power module, a supervision platform communication module and a digital electronic detonator communication module which are respectively connected with the main control module, wherein:
the main control module is used for controlling the communication module of the monitoring platform to communicate with a third-party monitoring platform, and the storage module and the digital electronic detonator communication module are communicated with an upper computer or a digital electronic detonator, the main control module receives input information of the key module and directly or after processing the input information and outputs the input information to the display module, the main control module controls the identity authentication module to carry out personnel identity verification, and the main control module controls the positioning module to realize the positioning of the detonator and the comparison of the position information;
the display module is an initiator display screen and is used for displaying received and input information;
the key module is provided with an operable key for inputting information to the main control module;
the positioning module is a GPS positioning module or a Beidou positioning module and is used for receiving and executing a control command sent by the main control module and sending the position information of the initiator to the main control module under the control of the main control module;
the identity authentication module is a special data lock and is used for identity authentication of an operator;
the storage module is used for storing the data received and sent by the main control module, the detonation log and the operation log;
the scanning head module is a scanning head and is used for scanning and verifying the allowable digital electronic detonators;
the buzzer is used for receiving and sending information by the main control module to remind an abnormal condition to alarm;
the system power supply module supplies power to each module and performs power supply management;
the monitoring platform communication module is a Bluetooth and a mobile phone connected with the Bluetooth, and the mobile phone is provided with APP software for detonation communication, which is used for the main control module to bidirectionally communicate with a third-party monitoring platform, send detonation positioning, identity authentication and detonation application information and receive detonation authorization information;
the digital electronic detonator communication module comprises a level detection circuit and a switch, the exploder is connected with the digital electronic detonator through a BUS BUS, and is connected with the main control module through a two-stage communication protection circuit for bidirectional communication between the main control module and the digital electronic detonator, the level detection circuit detects the level of the main control module to obtain instruction information, and the digital electronic detonator increases the BUS BUS current through the switch and transmits return information to the main control module.
The two-stage communication protection circuit comprises a communication power supply protection circuit I serving as a first-stage protection circuit, a communication stage protection circuit II serving as a second-stage protection circuit and a detonation stage protection circuit II. The communication power supply protection circuit I is a switching circuit, as shown in FIG. 3.
The output end of the communication stage protection circuit II is connected with the input end of the communication power supply protection circuit I, the output end of the communication power supply protection circuit I is connected with the input end of the digital electronic detonator communication module, the input end of the communication stage protection circuit II is connected with the communication power supply module, the communication power supply module is connected with the main control module to form a communication detection two-stage protection circuit, and the communication stage protection circuit II and the communication power supply module are shown in fig. 4. The main control module controls the communication stage protection circuit II to be started/closed by controlling the power supply of the communication power supply module to be started/closed; the communication detection two-stage protection circuit is used for limiting the current and voltage of the main control module and the digital electronic detonator in the communication detection process within an intrinsic safety range and realizing safety protection.
The output end of the second detonation stage protection circuit is connected with the input end of the first communication power supply protection circuit, the input end of the second detonation stage protection circuit is connected with the detonation power supply module, the detonation power supply module is connected with the main control module to form a two-stage detonation control protection circuit, and the second detonation stage protection circuit and the detonation power supply module are shown in fig. 5. The main control module controls the start/stop of the protection circuit II in the detonation stage by controlling the power supply start/stop of the detonation power supply module; the detonation control two-stage protection circuit is used for limiting the current and voltage of the main control module and the digital electronic detonator in the detonation control process within an intrinsic safety range and realizing safety protection.
The intrinsic safety voltages limited by the communication detection two-stage protection circuit and the detonation control two-stage protection circuit are different, and the intrinsic safety voltage of the communication detection two-stage protection circuit is lower than the intrinsic safety voltage of the detonation control two-stage protection circuit.
As shown in fig. 2, the detonation control method using the coal mine allowable digital electronic detonator initiator comprises the following steps:
the method comprises the following steps: self-test
The digital electronic detonator initiator is subjected to power-on self-test;
step two: identity verification
The identity of an operator is verified through a special data lock, the safety of initiation implementation is guaranteed, if the initiation is verified to pass the next operation, otherwise, the digital electronic detonator initiator is in a standby state;
step three: registering digital electronic detonators
The detonator scans and registers the set 100 digital electronic detonators through the scanning head, detects the digital electronic detonators, displays the result on a display screen of the detonator, and connects the registered 100 digital electronic detonator leg wires to the detonator through a BUS BUS.
The method for registering the digital electronic detonator also comprises the step of carrying out electric contact registration on a wiring end or directly leading in the information of the digital electronic detonator of an upper computer for non-electric registration. The scanning and registering are simple and convenient, and the real operation requirements are better met.
Step four: detonation application and authorization
The method comprises the steps that an initiator main control module sends initiation application information to a third-party supervision platform through a mobile phone with initiation communication APP software, wherein the initiation application information comprises initiator positioning information, initiation construction related information, 100 digital electronic detonators and work code information thereof; the third-party supervision platform issues authorization information after receiving the approval of the initiation application information, the mobile phone with the initiation communication APP software receives the initiation authorization information and transmits the initiation authorization information to the initiator through Bluetooth, the initiator verifies and decrypts the initiation authorization information and the registered digital electronic detonator information, the verification includes the verification of the blasting range, the validity period of the password of the digital electronic detonator and the information of the blasting time, and the decryption processing is carried out on a work code consisting of 100 digital electronic detonator UID codes, initiation passwords and detonator shell codes; if the verification is not qualified and/or the decryption fails, the exploder gives a buzzing alarm prompt and networking is forbidden; if the verification is in accordance with the requirement and/or the decryption is successfully in accordance with the requirement, the next step of networking detection is carried out;
step five: networking detection
The detonator main control module controls to open a switch of the communication power supply module, and at the moment, the communication stage protection circuit II is in conduction connection with the communication power supply protection circuit I to form a communication detection two-stage protection circuit which is connected with a digital electronic detonator through a digital electronic detonator communication module; the instructions sent by the main control module of the initiator are provided with check bytes, the networking detection is completed when the digital electronic detonator check processing is passed, and the networking detection instructions are invalid when the digital electronic detonator check processing is not passed; in the networking detection process, the communication power supply module charges the communication detection two-stage protection circuit to reach the communication voltage 10.5V required by networking detection; the communication detection two-stage protection circuit limits that the voltage of a protection circuit II in a communication stage does not exceed 11V, the current does not exceed 100mA, the voltage of a communication power supply protection circuit I does not exceed 20V, and the current does not exceed 100mA, meets the requirements of an intrinsic safety circuit, detects a bridge wire, a detonation capacitor and a detonation capacitor charging and discharging circuit of a registered thunder digital electronic detonator, and judges whether the digital electronic detonator is off-line or not;
step six: charging of electricity
The detonator initiation power supply module is controlled by the initiator main control module to be switched on, and at the moment, the initiation stage protection circuit II is in conductive connection with the communication power supply protection circuit I to form an initiation control two-stage protection circuit which is connected with the digital electronic detonator through the digital electronic detonator communication module; the command sent by the main control module of the initiator is provided with check bytes, the charging is completed when the check processing of the digital electronic detonator is passed, and the charging command fails when the check processing of the digital electronic detonator is not passed; in the charging process, the detonation power supply module charges the detonation control two-stage protection circuit to reach the voltage 18V required by detonation; the two-stage protection circuit for detonation control limits that the voltage of the protection circuit II in the detonation stage does not exceed 18V and the current does not exceed 100mA, the voltage of the communication power supply protection circuit I does not exceed 20V and the current does not exceed 100mA, and the requirement of the intrinsically safe circuit is met.
Step seven: initiation of detonation
After the main control module sends a detonation instruction, the detonation instruction reaches a digital electronic detonator through a detonation stage protection circuit II, a connection communication power supply protection circuit I and a digital electronic detonator communication module, the digital electronic detonator starts a detonation switch, a detonation capacitor discharges bridge wires, and the digital electronic detonator detonates;
step eight: data backup
And the storage module backs up all the blasting data and transmits the blasting data back to the supervision platform in real time or periodically so as to be inquired and traced.
According to GB 3836.4-2010 section 4 of explosive environment: by the equipment of the safe type "i" protection of essence ", right the utility model discloses output electric capacity, output current, output inductance carry out standard safety requirement and verify.
1. As shown in fig. 6, the output capacitance, the output current, and the output inductance of the two-stage protection circuit for communication detection are calculated.
(1) Maximum allowable current
The communication voltage is 10.5V, a factor of 10% of power supply fluctuation is considered, E =10.5Vx1.1=11.55V, 12V is taken, the safety coefficient is 1.5, and according to GB 3836.4-2010 explosive environment part 4: the circuit current values were calculated from the voltage 12.1V as shown in table a.1, appendix to intrinsically safe "i" protected devices ". The two-stage protection circuit for communication detection has the current limiting of 100mA, and the threshold value of the fuse is also 100mA, so that the safety requirement is met.
(2) Circuit capacitor
The capacitance value of the whole communication circuit of the initiator in the networking detection stage is 12.4uF, the safety factor is 1.5, and the circuit voltage is increased as follows: 1.5X10.5V =15.75V, 15.8V. According to GB 3836.4-2010 section 4 of explosive environment: the appendix table a.2 of the device protected by the intrinsically safe "i" corresponds to a capacitance value of 65uF at a voltage of 15.8V which does not cause ignition, 12.4uF being less than 65uF, complying with the intrinsic safety requirements.
(3) Circuit inductor
The communication detection two-stage protection circuit adopts the protection circuit II in the communication stage, the inductance value of the voltage-stabilizing chip is less than 0.0001H, the maximum current value flowing through the protection circuit II is 100mA, the safety coefficient is 1.5, the current is increased to 1.5X100mA =150mA, the minimum ignition current is found to be 0.27A according to 0.0001H, and the requirement of intrinsic safety is met.
2. As shown in fig. 7, the output capacitance, the output current, and the output inductance of the two-stage protection circuit for detonation control are calculated.
(1) Maximum allowable current
The detonation voltage is 18V, the factor of 10% of power fluctuation is considered, E =18V x 1.1.1 =19.8V, the safety coefficient is 1.5, and the detonation voltage is calculated according to GB 3836.4-2010 explosive environment part 4: appendix table a.1 for device protected by intrinsically safe "i", minimum ignition current =480 mA. Maximum allowed current = minimum ignition current/safety factor =320 mA. The two-stage protection circuit is controlled to be limited to be 100mA in detonation, the threshold value of the fuse is also 100m A, and the requirement of intrinsic safety is met.
(2) Circuit capacitor
And the capacitance of the whole communication circuit of the initiator in the charging stage is 7uF, the safety coefficient is 1.5, and the voltage of the circuit is increased to 1.5X 18V = 27V. According to GB 3836.4-2010 section 4 of explosive environment: the appendix A.2 of the device protected by intrinsically safe "i", corresponds to a value of 9uF for the capacitance not to cause ignition at a voltage of 27V, complying with intrinsic safety requirements.
(3) Circuit inductance
In the detonation stage protection circuit II, the inductance value 10uH is less than 0.0001H, the maximum current value flows through 100mA, the safety factor is 1.5, and the current is increased to 1.5X100mA =150 mA. According to 0.0001H, the minimum ignition current is found to be 0.27A, which meets the intrinsic safety requirement.
The verification shows that the output capacitance, the output current and the output inductance of the communication detection two-stage protection circuit and the detonation control two-stage protection circuit are all within the range of standard safety requirements; and the communication voltage is lower than the detonation voltage, so that the risk of false detonation in the detection process is reduced, and the safety is improved.
The coal-permitted digital electronic digital detonator initiation controller can be subjected to various interferences such as static electricity, power frequency interference, radiation and the like when used in a coal mine, and communication interference can be caused, and even hidden dangers of equipment, damage and safety can be caused. In order to avoid interference on the functional influence of the detonation controller and the damage of devices, the detonation controller adopts multiple protection technologies to protect equipment. The utility model discloses there is the protection circuit that is furnished with voltage limiting and current limiting two-stage communication protection circuit inside the detonation controller, not only detect and detonate the staged conduction control to coal permit digital electronic detonator, pass through two-stage current limiting voltage limiting protection simultaneously, the current-voltage who restricts communication power module and detonation power module discharge circuit promptly not only satisfies digital electronic detonator communication detection and the required energy of detonation, and accord with the intrinsic safety requirement, can not fire dangerous mixed gas because of component heating or electric arc electric spark, also can not make the detonator take place the mistake and explode because of the trouble, thereby the security of electronic detonator blasting has been improved, especially, be fit for mining or have the blasting under the special environment of inflammable explosive gas; the voltage of the communication detection protection two-stage protection circuit in the two-stage protection circuit is lower than the voltage of the detonation control two-stage protection circuit, namely the voltage in the communication detection stage is lower than the detonation voltage, so that the false detonation during the networking detection is avoided, and the detonation control safety is further improved; the buzzer is used for alarming and managing overcurrent and overvoltage, so that device damage caused by abnormal operation is avoided; the communication of the detonation controller adopts check processing, and the disturbed message is not processed, so that the occurrence of false alarm is avoided.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (6)
1. The coal mine allowable digital electronic detonator exploder is characterized in that: including host system and the display module, button module, orientation module, authentication module, storage module, system power module, supervision platform communication module and the communication module of digital electronic detonator who is connected with host system respectively, wherein:
the main control module is used for controlling the communication between the monitoring platform communication module and a third-party monitoring platform, and the storage module and the digital electronic detonator communication module are communicated with an upper computer or a digital electronic detonator, the main control module receives input information of the key module and directly or after processing the input information and outputs the input information to the display module, the main control module controls the identity authentication module to carry out personnel identity verification, and the main control module controls the positioning module to realize the positioning of the detonator and the comparison of the position information;
the display module is used for displaying received and input information;
the key module is used for inputting information to the main control module;
the positioning module is used for receiving and executing the control command sent by the main control module and sending the position information of the initiator to the main control module under the control of the main control module;
the identity authentication module is used for authenticating the identity of an operator;
the storage module is used for storing the data received and sent by the main control module, as well as a detonation log and an operation log;
the system power supply module supplies power to each module and performs power supply management;
the monitoring platform communication module is in communication connection with a third-party monitoring platform and is used for the main control module to bidirectionally communicate with the third-party monitoring platform, send initiator positioning, identity authentication and initiation application information and receive initiation authorization information;
the digital electronic detonator communication module is connected with the digital electronic detonator, and is connected with the main control module through the two-stage communication protection circuit and used for bidirectional communication between the main control module and the digital electronic detonator; the two-stage communication protection circuit comprises a communication detection two-stage protection circuit and a detonation control two-stage protection circuit; the communication detection two-stage protection circuit is used for limiting the current and voltage of the main control module and the digital electronic detonator in the communication detection process within an intrinsic safety range and realizing safety protection; the detonation control two-stage protection circuit is used for limiting the current and voltage of the main control module and the digital electronic detonator in the detonation control process within an intrinsic safety range and realizing safety protection; the intrinsic safety voltages limited by the communication detection two-stage protection circuit and the detonation control two-stage protection circuit are different, and the intrinsic safety voltage of the communication detection two-stage protection circuit is lower than the intrinsic safety voltage of the detonation control two-stage protection circuit.
2. The coal mine allowable digital electronic detonator initiator according to claim 1, wherein: the two-stage communication protection circuit comprises a communication power supply protection circuit I serving as a first-stage protection circuit, a communication stage protection circuit II serving as a second-stage protection circuit and a detonation stage protection circuit II; the communication power supply protection circuit I is a switching circuit, the communication stage protection circuit II and the detonation stage protection circuit II are respectively connected with the communication power supply protection circuit I, the communication stage protection circuit II and the communication power supply protection circuit I are connected to form a communication detection two-stage protection circuit, and the detonation stage protection circuit II and the communication power supply protection circuit I are connected to form a detonation control two-stage protection circuit.
3. The coal mine allowable digital electronic detonator initiator according to claim 2, wherein: the input end of the communication stage protection circuit II is connected with a communication power supply module, the communication power supply module is connected with a main control module, and the output end of the communication stage protection circuit II is connected with the input end of the communication power supply protection circuit I to form a communication detection two-stage protection circuit; the input end of the detonation stage protection circuit II is connected with a detonation power supply module, the detonation power supply module is connected with a main control module, and the output end of the detonation stage protection circuit II is connected with the input end of the communication power supply protection circuit I to form a detonation control two-stage protection circuit; the output end of the communication power supply protection circuit I is connected with the input end of the digital electronic detonator communication module; and the main control module controls the communication power supply module and the initiation power supply module to supply power on/off so as to control the communication stage protection circuit II and the initiation stage protection circuit II to be started/closed.
4. The coal mine allowable digital electronic detonator initiator according to any claim of claim 1, 2 or 3, wherein: the detonator also comprises a scanning head, and the scanning head is connected with the main control module and is used for scanning and verifying the coal-permitted digital electronic detonator.
5. The coal mine allowable digital electronic detonator initiator according to any claim of claim 1, 2 or 3, wherein: the detonator also comprises a buzzer, wherein the buzzer is connected with the main control module and used for receiving and sending information by the main control module to remind the abnormal condition to alarm.
6. The coal mine allowable digital electronic detonator initiator according to any claim of claim 1, 2 or 3, wherein: the supervision platform communication module is a Bluetooth and a mobile phone connected with the Bluetooth, and APP software for detonation communication is arranged on the mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220985102.3U CN217275840U (en) | 2022-04-27 | 2022-04-27 | Digital electronic detonator initiator for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220985102.3U CN217275840U (en) | 2022-04-27 | 2022-04-27 | Digital electronic detonator initiator for coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217275840U true CN217275840U (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220985102.3U Active CN217275840U (en) | 2022-04-27 | 2022-04-27 | Digital electronic detonator initiator for coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217275840U (en) |
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2022
- 2022-04-27 CN CN202220985102.3U patent/CN217275840U/en active Active
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