CN113078698A - Electronic detonator energy storage capacitor charging control device, electronic detonator and system - Google Patents
Electronic detonator energy storage capacitor charging control device, electronic detonator and system Download PDFInfo
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- CN113078698A CN113078698A CN202010008288.2A CN202010008288A CN113078698A CN 113078698 A CN113078698 A CN 113078698A CN 202010008288 A CN202010008288 A CN 202010008288A CN 113078698 A CN113078698 A CN 113078698A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 122
- 238000004146 energy storage Methods 0.000 title claims abstract description 120
- 238000004891 communication Methods 0.000 claims abstract description 46
- 238000006243 chemical reaction Methods 0.000 claims abstract description 39
- 238000012544 monitoring process Methods 0.000 claims abstract description 34
- 238000005070 sampling Methods 0.000 claims abstract description 22
- 230000000977 initiatory effect Effects 0.000 claims description 13
- 239000003381 stabilizer Substances 0.000 claims description 2
- 238000005474 detonation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 101001128814 Pandinus imperator Pandinin-1 Proteins 0.000 description 3
- 101001024685 Pandinus imperator Pandinin-2 Proteins 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/12—Primers; Detonators electric
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides an electronic detonator energy storage capacitor charging control device, an electronic detonator and a system, wherein the device comprises: the device comprises a communication module, a logic control module, an energy storage capacitor module, a charging control module, a digital-to-analog conversion module, a charging monitoring module, a current limiting module and a sampling module; the communication module is used for acquiring a charging instruction and sending the charging instruction to the logic control module; the logic control module is used for controlling the charging control module according to the charging instruction to enable the energy storage capacitor module to be charged, and sending the boosted voltage value to the digital-to-analog conversion module so that the digital-to-analog conversion module generates a comparison voltage according to the boosted voltage value; the charging monitoring module is used for generating the charging state of the energy storage capacitor module according to the comparison voltage and the voltage of the energy storage capacitor module; the charging monitoring module is used for sending the charging state to the logic control module; the logic control module is also used for enabling the communication module to obtain a next charging instruction. The invention can realize high-precision and high-efficiency charging of detonators with different loading quantities.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to an electronic detonator energy storage capacitor charging control device, an electronic detonator and a system.
Background
The electronic detonator is generally subjected to subsection delay initiation, if the initiation equipment is used for supplying power to the detonator through a bus, the short-delay detonator detonates the explosive firstly after initiation and can break the bus, the long-delay detonator can be powered down and can be detonated, therefore, an energy storage capacitor is required to be arranged in the detonator to store electricity, and the electricity is continued to the detonator instead of the bus bar after the detonation, the energy-storing capacitor needs to be charged first, in the existing device and technology, the comparator is used to judge whether the capacitor is fully charged, the comparison voltage is generated by dividing the voltage by the resistor, the precision of the resistor in the general integrated circuit is lower, so the precision of the generated comparison voltage is lower, moreover, when multi-stage charging is performed, a plurality of comparators and a plurality of voltage division circuits are required, the circuit is complex and has high cost, and the current that charges simultaneously when detonator is in large quantity can be very big, can lead to the loss grow of generating line, reduces charge efficiency.
Disclosure of Invention
The invention provides an electronic detonator energy storage capacitor charging control device, an electronic detonator and a system, which can realize high-precision and high-efficiency charging of detonators with different loading quantities.
In a first aspect, an embodiment of the present invention provides an electronic detonator energy storage capacitor charging control device, which is applied to an electronic detonator, and includes: the device comprises a communication module, a logic control module, an energy storage capacitor module, a charging control module, a digital-to-analog conversion module, a charging monitoring module, a current limiting module and a sampling module; the logic control module is respectively and electrically connected with the communication module, the charging control module, the charging monitoring module and the digital-to-analog conversion module; the charging monitoring module is respectively and electrically connected with the charging control module, the sampling module and the digital-to-analog conversion module; the sampling module is electrically connected with the energy storage capacitor module; the energy storage capacitor module is electrically connected with the charging control module through a current limiting module; the communication module is used for acquiring a charging instruction and sending the charging instruction to the logic control module; the charging instruction comprises a boosting frequency and a boosting voltage value; the logic control module is used for controlling the charging control module according to the charging instruction so as to enable the energy storage capacitor module to be charged; the logic control module is further configured to send the boosted voltage value to the digital-to-analog conversion module, so that the digital-to-analog conversion module generates a comparison voltage according to the boosted voltage value; the charging monitoring module is used for acquiring the comparison voltage, acquiring the voltage of the energy storage capacitor module through the sampling module, and generating the charging state of the energy storage capacitor module according to the comparison voltage and the voltage of the energy storage capacitor module; the charging control module is also used for acquiring the charging state and continuing or stopping charging the energy storage capacitor module according to the charging state; the charging monitoring module is also used for sending the charging state to the logic control module; and the logic control module is also used for sending a feedback signal to the communication module according to the charging state so as to enable the communication module to obtain a next charging instruction.
In a second aspect, an embodiment of the present invention further provides an electronic detonator, where the electronic detonator includes the above charging control device for the energy storage capacitor of the electronic detonator.
In a third aspect, an embodiment of the present invention further provides an electronic detonator system, which includes the electronic detonator described above.
The embodiment of the invention has the following beneficial effects: the embodiment of the invention provides an electronic detonator energy storage capacitor charging control device, an electronic detonator and a system, wherein the device comprises: the device comprises a communication module, a logic control module, an energy storage capacitor module, a charging control module, a digital-to-analog conversion module and a charging monitoring module, wherein the device acquires a charging instruction through the communication module and sends the charging instruction to the logic control module; the charging instruction comprises a boosting frequency and a boosting voltage value, the logic control module is used for controlling the charging control module according to the charging instruction so as to charge the energy storage capacitor module, the logic control module is also used for sending the boosting voltage value to the digital-to-analog conversion module so that the digital-to-analog conversion module generates a comparison voltage according to the boosting voltage value, the charging monitoring module is used for acquiring the voltage of the energy storage capacitor module and generating the charging state of the energy storage capacitor module according to the comparison voltage and the voltage of the energy storage capacitor module, and the charging control module is also used for acquiring the charging state and continuing or stopping charging the energy storage capacitor module according to the charging state; the charging monitoring module is also used for sending the charging state to the logic control module; the logic control module is also used for sending a feedback signal to the communication module according to the charging state so that the communication module can obtain a next charging instruction. According to the embodiment of the invention, the charging instruction is obtained through the communication module, so that the boosting times and the boosting voltage value of each time are determined, the charging of the energy storage capacitor module is divided into multiple sections, the energy loss is reduced, and the charging efficiency is improved; the digital-to-analog conversion module is adopted to convert the boosted voltage value into the analog voltage corresponding to each boosting as the comparison voltage, so that the comparison voltage precision is higher, and the high-precision and high-efficiency charging of detonators with different loading quantities is realized.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a block diagram of a structure of a charging control device for an energy storage capacitor of an electronic detonator according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a charging control circuit of an energy storage capacitor of an electronic detonator according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, in order to improve charging efficiency, a sectional charging mode can be adopted, an existing charging circuit adopts a multi-stage comparator to carry out sectional comparison and can generally be divided into 1-6 sections, due to the fact that the sectional operation is not fine, accurate classification can not be carried out according to the number of detonators, high-precision and high-efficiency charging of any number of detonators with loads can not be achieved, sectional voltage generated by the mode depends on the precision of a divider resistor, and due to the fact that the internal resistance of an integrated circuit is generally lower, the precision of the sectional voltage is lower, and the precision of charging voltage obtained by an energy storage capacitor is lower.
Based on the charging control device, the charging control device for the energy storage capacitor of the electronic detonator can realize high-precision and high-efficiency charging of detonators with different loading quantities.
For the convenience of understanding the embodiment, first, a detailed description is given to the charging control device for the energy storage capacitor of the electronic detonator disclosed in the embodiment of the present invention.
The embodiment of the invention provides a charging control circuit of an energy storage capacitor of an electronic detonator, which is shown in a structural block diagram of a charging control device of the energy storage capacitor of the electronic detonator in figure 1, and the device comprises the following modules:
the device comprises a communication module 101, a logic control module 102, an energy storage capacitor module 103, a charging control module 104, a digital-to-analog conversion module 105, a charging monitoring module 106, a current limiting module 107 and a sampling module 108; the logic control module is respectively and electrically connected with the communication module, the charging control module, the charging monitoring module and the digital-to-analog conversion module; the charging monitoring module is respectively and electrically connected with the charging control module, the sampling module and the digital-to-analog conversion module; the sampling module is electrically connected with the energy storage capacitor module; the energy storage capacitor module is electrically connected with the charging control module through the current limiting module.
The communication module is used for acquiring a charging instruction and sending the charging instruction to the logic control module; the charging instruction comprises a boosting frequency and a boosting voltage value; the logic control module is used for controlling the charging control module according to the charging instruction so as to enable the energy storage capacitor module to be charged; the logic control module is also used for sending the boosted voltage value to the digital-to-analog conversion module so that the digital-to-analog conversion module generates a comparison voltage according to the boosted voltage value; the charging monitoring module is used for acquiring comparison voltage, acquiring the voltage of the energy storage capacitor module through the sampling module, and generating the charging state of the energy storage capacitor module according to the comparison voltage and the voltage of the energy storage capacitor module; the charging control module is also used for acquiring the charging state and continuing or stopping charging the energy storage capacitor module according to the charging state; the charging monitoring module is also used for sending the charging state to the logic control module; the logic control module is also used for sending a feedback signal to the communication module according to the charging state so that the communication module can obtain a next charging instruction.
In the embodiment of the invention, for a certain electronic detonator energy storage capacitor charging control device, the communication module acquires a charging instruction and sends the analyzed charging instruction to the logic control module. The logic control module can include the logic control unit, and the logic control unit discerns the instruction of charging and the voltage value that steps up to voltage value transmission to digital-to-analog conversion module will step up, and digital-to-analog conversion module can include digital-to-analog converter, and digital-to-analog converter converts digital signal's the voltage value that steps up into analog signal, obtains the high accuracy comparison voltage that steps up at every turn and corresponds. After the logic control module acquires the charging instruction, the charging control module can be controlled to enable the energy storage capacitor module to be charged, whether charging is carried out or not is determined according to the charging state of the charging monitoring module in the enabling charging process, and the energy storage capacitor module can be realized through the energy storage capacitor. The charging monitoring module is used for acquiring real-time voltage of the energy storage capacitor module through the sampling module and also can acquire high-precision comparison voltage of the digital-to-analog conversion module, so that the charging state of the energy storage capacitor module is obtained, then, the charging control module is also used for acquiring the charging state and continuing or stopping charging the energy storage capacitor module according to the charging state, and the charging state can be continued or stopped by controlling the on or off of a switch tube in the charging control module. The charging monitoring module is also used for sending the charging state to the logic control module, the charging state comprises charging completion or continuous charging, and when the state received by the logic control module is charging completion, a feedback signal is sent to the communication module, so that the communication module obtains a next charging instruction until the charging times specified by the boosting times are completed.
The energy storage capacitor module is electrically connected with the charging control module through the current limiting module, and can play a role in limiting current when the energy storage capacitor charging module is charged.
The embodiment of the invention provides an electronic detonator energy storage capacitor charging control device, an electronic detonator and a system, wherein the device comprises: the device comprises a communication module, a logic control module, an energy storage capacitor module, a charging control module, a digital-to-analog conversion module, a charging monitoring module, a current limiting module and a sampling module, wherein the device acquires a charging instruction through the communication module and sends the charging instruction to the logic control module; the charging instruction comprises a boosting frequency and a boosting voltage value, the logic control module is used for controlling the charging control module according to the charging instruction to enable the energy storage capacitor module to be charged, the logic control module is also used for sending the boosting voltage value to the digital-to-analog conversion module so as to enable the digital-to-analog conversion module to generate high-precision comparison voltage according to the boosting voltage value, the charging monitoring module is used for acquiring real-time voltage of the energy storage capacitor module, acquiring comparison voltage and generating a charging state of the energy storage capacitor module according to the high-precision comparison voltage and the real-time voltage, and the charging control module is also used for acquiring a charging state and continuing or stopping charging the energy storage capacitor module according to the charging state; the charging monitoring module is also used for sending the charging state to the logic control module; the logic control module is also used for sending a feedback signal to the communication module according to the charging state so that the communication module can obtain a next charging instruction. According to the embodiment of the invention, the charging instruction is obtained through the communication module, so that the boosting times and the boosting voltage value of each time are determined, the charging of the energy storage capacitor module is divided into multiple sections, the energy loss is reduced, and the charging efficiency is improved; the digital-to-analog conversion module is adopted to convert the boosted voltage value into the analog voltage corresponding to each boosting as the comparison voltage, so that the comparison voltage precision is higher, and the high-precision and high-efficiency charging of the detonators with different loading quantities with high precision is realized.
In consideration of the fact that the charging control device of the energy storage capacitors of the electronic detonators is convenient to control, the communication module is electrically connected with the detonation equipment through the detonator pins.
In the embodiment of the invention, the communication module is electrically connected with the initiation device through the bus so as to provide a power supply for the energy storage capacitor charging control device of the electronic detonator, one initiation device can be electrically connected with a plurality of energy storage capacitor charging control devices of the electronic detonator, and each energy storage capacitor charging control device of the electronic detonator can be arranged in one electronic detonator. The detonation device can obtain a boosting scheme according to the number of the connected electronic detonators and the voltage value required by the electronic detonators: the step-up is realized by the step-up times and the step-up voltage value of each charge. And the detonating equipment generates a charging instruction according to the boosting scheme and sends the charging instruction to the communication module of each electronic detonator energy storage capacitor charging control device.
Considering that the bus bar can not be divided into positive and negative, thereby facilitating the simplification of the wiring step, the device also comprises a rectification module; the rectifying module comprises a plurality of diodes which are connected end to end in sequence; the input end of the rectifying module is electrically connected with the detonator pin and the communication module respectively; the output end of the rectifying module is electrically connected with the charging control module, the charging monitoring module, the digital-to-analog conversion module and the energy storage capacitor module through the charging switch respectively.
In the embodiment of the present invention, the rectifying module may be implemented by a rectifying circuit, referring to the electronic detonator energy storage capacitor charging control circuit diagram shown in fig. 2, which shows the sequential connection effect of the diodes in the rectifying circuit D1, and the rectifying current may include a plurality of diodes whose first bits are electrically connected in sequence, and which also shows the connection manner of the rectifying circuit with other modules in the electronic detonator energy storage capacitor charging control device.
To simplify the circuit, the charging control module includes a nand gate and a charging switch.
In the embodiment of the invention, the charge control module can be formed by the NAND gate and the charge switch, so that the energy storage capacitor module is controlled to enable charging.
To simplify the circuitry, the charge monitoring module includes a comparator.
In the embodiment of the present invention, the charge monitoring module may be implemented by a comparator.
The sampling module includes a first resistor and a second resistor.
In order to improve safety, the sampling module comprises a first resistor and a second resistor; the first resistor and the second resistor are connected in series; one end of the first resistor and one end of the second resistor are electrically connected with the charging monitoring module; the other end of the first resistor is electrically connected with the energy storage capacitor module, and the other end of the second resistor is grounded.
In this embodiment of the present invention, the sampling module may be implemented by one or more resistors, and may be specifically set according to actual requirements, which is not specifically limited in this embodiment of the present invention.
In order to ensure that the circuit still has a power supply path when the bus is burst broken, the device further comprises: a freewheeling diode, a voltage regulator and a supply voltage module; the output end of the rectification module is respectively and electrically connected with the cathode of the fly-wheel diode and the charging switch; the voltage stabilizer is electrically connected with the cathode of the fly-wheel diode and the power supply voltage module respectively; and the anode of the freewheeling diode is in communication connection with the energy storage capacitor module.
In the embodiment of the invention, referring to a circuit diagram of the charging control circuit of the energy storage capacitor of the electronic detonator shown in fig. 2, the figure shows the connection mode of the freewheeling diode D3, the voltage regulator LDO and the power supply voltage module VCC in the charging control device of the energy storage capacitor of the electronic detonator.
In order to detonate the detonator, the device further comprises an ignition module, wherein the ignition module comprises an ignition bridge wire and an ignition switch; the energy storage capacitor module is electrically connected with the ignition switch through an ignition bridge wire; the ignition switch is electrically connected with the logic control module.
In an embodiment of the invention, the ignition module may be implemented by an ignition circuit. Referring to the circuit diagram of the electronic detonator energy storage capacitor charging control circuit shown in fig. 2, the connection mode of an ignition bridge wire QS1 and an ignition switch Q5 in the electronic detonator energy storage capacitor charging control device is shown.
The working process of the electronic detonator energy storage capacitor charging control device provided by the embodiment of the invention is described below.
1) The detonating equipment U1 generates a boosting scheme according to the number of the current detonators;
2) the detonation device U1 sends a corresponding charging instruction according to the boosting scheme and outputs a boosting voltage;
3) the communication module U2 analyzes the charging instruction and transmits the charging instruction to the logic control unit U6;
4) the logic control unit U6 recognizes and reads the charging command and the voltage value to be boosted, outputs high level at Pin2 to enable the detonator to enter a charging state, and outputs digital signals representing the voltage value to be boosted at Pin 4-Pin 7;
5) the digital-to-analog converter U5 converts the digital signal output by the logic control unit U6 into a corresponding analog voltage as a high-precision comparison voltage;
6) a resistor network formed by high-precision resistors R7 and R8 collects the voltage of an energy storage capacitor C1 as the current voltage of the energy storage capacitor;
7) the comparator U4 judges whether the current voltage of the energy storage capacitor reaches the high-precision comparison voltage output to continue charging or end the charging state;
8) the NAND gate U3 judges whether the comparator U4 outputs a mark for continuing charging or ending charging to control the charging switch Q2 to be switched on or off, the charging switch Q2 switches on the energy storage capacitor C1 to charge through the current-limiting resistor R6, and the charging switch Q2 switches off the energy storage capacitor C1 to stop charging;
9) after one segmented voltage is completely charged, the logic control unit identifies a mark for finishing charging through a Pin3 Pin, sends a charging completion feedback signal to the initiation device through the communication module U2, the initiation device continues to send a charging instruction of the next segmented voltage and output boosted voltage after receiving the feedback, and then executes the steps 3) -8) to complete charging of the other segmented voltage, and the steps are circulated until all the segmented voltages of the boosting scheme are completely charged, namely the charging is completed;
10) when a bus is burst off during detonation, a detonator circuit loses a power supply path, but at the moment, when a plurality of detonators are not counted down, power needs to be continuously supplied, an energy storage capacitor C1 can supply power to an LDO (Low Dropout Regulator) U7 through a freewheeling diode D3, and the U7 is ensured to output power supply voltage VCC (Volt Current Regulator, power supply voltage) to enable the detonators to continuously work;
11) when the detonator countdown is finished, the logic control unit U6 Pin9 outputs high level to drive the ignition switch Q5 to be conducted, the energy storage capacitor C1 discharges through an ignition bridge wire QS1, the ignition bridge wire can rapidly generate heat to ignite the initiating explosive on the ignition bridge wire after current flows through the ignition bridge wire, and impact flame is generated to ignite the detonator after the initiating explosive flows.
Referring to the circuit diagram of the charging control circuit of the energy storage capacitor of the electronic detonator shown in fig. 2, the charging control device of the energy storage capacitor of the electronic detonator according to the embodiment of the present invention may specifically include: the device comprises a detonating device U1, a rectifying circuit D1, an energy storage capacitor C1, a communication module U2, a charging control circuit 1, a freewheeling diode D3, an ignition circuit 2, a logic control unit U6 and an LDO U7.
The detonation device U1 is connected with two detonator pins LG _1 and LG _2 through a bus and used for realizing the charging instruction transmission with the connected detonators, the charging voltage output, the detonator subsection charging completion feedback receiving and the detonation instruction transmission;
the rectifying circuit D1 is formed by connecting 4 diodes in the sequence shown in the figure 2, the input end of the rectifying circuit is connected with the detonator pins LG _1 and LG _2 and two input ends of the communication module, the output end of the rectifying circuit is connected with the input end of the LDO U7, the cathode of the freewheeling diode D3 and the charging switch Q2, and the forward voltage or the reverse voltage input by the pins LG _1 and LG _2 is rectified into the forward voltage VDD;
the left side of the energy storage capacitor C1 is connected with a current limiting resistor R6, a sampling resistor R7 and a freewheeling diode D3, and the right side of the energy storage capacitor C1 is connected with an ignition bridge wire QS1 to store electric energy for the circuit;
the upper end of the communication module U2 is respectively connected with two input ends of detonator pins LG _1 and LG _2 and a rectifying circuit, the lower end of the communication module U2 is connected with a Pin1 of a logic control unit U6, receives data or commands sent by an initiating device U1 and sends feedback data of the logic control unit U6;
the charging control circuit 1 comprises a charging switch Q2, a nand gate U3, a comparator U4, a digital-analog conversion circuit U5 and a current-limiting resistor R5, wherein the left end of the charging switch Q5 is connected with the output VDD of a rectifying circuit D5 and is connected in parallel with the cathode of a freewheeling diode D5 at the input of the LDO U5, the right end is connected with the current-limiting resistor R5, the lower end is connected with the output of the nand gate U5, the upper end of the nand gate U5 is connected with the charging switch Q5, the lower end is connected with the output of a logic control unit U5 Pin 5 and the comparator U5, the upper end of the comparator U5 is connected with the resistors R5 and the upper end of the digital-analog conversion circuit U5, the lower end is connected with an input Pin of the nand gate U5 and the logic control unit U5, the sampling resistors R5 and R5 are connected in series, one end is connected with the energy-storing capacitor C5, the middle end is connected with the upper end of the U5, the digital-analog conversion circuit U5, the upper end, when the logic control unit U6 receives a charging command and a corresponding segment voltage to be charged, a high level is output at Pin2, then digital signals corresponding to the segment voltage to be charged are input at pins 4-Pin 8, then the digital signals are converted into corresponding analog voltages by the digital-to-analog conversion circuit U5, the comparator U4 compares the voltage of the energy storage capacitor C1 sampled by the sampling resistors R7 and R8 with the analog voltage output by the digital-to-analog conversion circuit U5, if the sampled voltage of the energy storage capacitor C1 is smaller than the analog voltage output by the digital-to-analog conversion circuit U5, the comparator U4 outputs a high level, then the NAND gate U3 outputs a low level, the charging switch tube Q2 is turned on, the power VDD flows through the charging switch tube Q2 to charge the energy storage capacitor C1 through the R6, and if the sampled voltage of the energy storage capacitor C1 is greater than or equal to the analog voltage output by the digital-to-analog conversion circuit U5, the current limiting comparator U4 outputs a low, the NAND gate U3 outputs low level, the charging switch Q2 turns off the energy storage capacitor C1 to stop charging, meanwhile, the logic control unit U6 detects the low level input by Pin3 Pin, and outputs the current segment voltage full feedback signal at Pin 1;
the cathode of a freewheeling diode D3 is connected with the input end of the LDO U7 and the output end VDD of the rectifying circuit, and the anode of the freewheeling diode D3 is connected with energy storage capacitors C1, R6 and R7 and is used for freewheeling for the LDO U7;
the ignition circuit 2 comprises an ignition bridge wire QS1 and an ignition switch Q5, wherein the upper end of the ignition bridge wire QS1 is connected with an energy storage capacitor C1, the lower end of the ignition bridge wire QS1 is connected with the ignition switch Q5, the left end of the ignition switch Q5 is connected with a Pin9 of a logic control unit U6, and the circuit is used for igniting a detonator;
when the initiation device sends a charging instruction, the logic control unit U6 Pin1 reads an output signal of the communication module U2, firstly outputs a high level at the Pin2 to enable the circuit to enter a charging state, then inputs a digital signal corresponding to a segment voltage to be charged at the Pin4 to Pin8 to output a segment voltage value to be charged, when the energy storage capacitor C9 is charged in a segment manner, the logic control unit U6 detects a low level input at the Pin3, and outputs a feedback signal through the Pin1 to tell the initiation device U1 that the current segment charging is completed and the next segment charging can be performed.
The left side of the LDO U7 is connected with a current diode D3 and the output VDD of the rectifying circuit, the right side is connected with VCC, and the lower end is connected with VSS, and the LDO U7 is used for supplying power to each module and device of the circuit.
According to the electronic detonator energy storage capacitor charging control device, the electronic detonator and the system, the digital-to-analog conversion module is adopted for segmentation, for example, the segmentation can be carried out by 1 to 32 segments, each segment reaches the accuracy of 0.75V when corresponding to 24V, the circuit is simple, the cost is low, high-accuracy and high-efficiency charging of detonators with different loading quantities can be realized, the anti-explosion risk caused by low energy of long-delay detonators due to low charging accuracy is avoided, and the safety risk caused by long-time charging is reduced.
The embodiment of the invention also provides an electronic detonator which comprises any one of the electronic detonator energy storage capacitor charging control devices.
The embodiment of the invention also provides an electronic detonator system which comprises the electronic detonator.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the electronic detonator described above may refer to the corresponding process in the foregoing embodiment of the charging control device for the energy storage capacitor of the electronic detonator, and will not be described herein again.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides an electronic detonator energy storage electric capacity control device that charges which is characterized in that, is applied to electronic detonator, the device includes: the device comprises a communication module, a logic control module, an energy storage capacitor module, a charging control module, a digital-to-analog conversion module, a charging monitoring module, a current limiting module and a sampling module; the logic control module is respectively and electrically connected with the communication module, the charging control module, the charging monitoring module and the digital-to-analog conversion module; the charging monitoring module is respectively and electrically connected with the charging control module, the sampling module and the digital-to-analog conversion module; the sampling module is electrically connected with the energy storage capacitor module; the energy storage capacitor module is electrically connected with the charging control module through a current limiting module;
the communication module is used for acquiring a charging instruction and sending the charging instruction to the logic control module; the charging instruction comprises a boosting frequency and a boosting voltage value;
the logic control module is used for controlling the charging control module according to the charging instruction so as to enable the energy storage capacitor module to be charged;
the logic control module is further configured to send the boosted voltage value to the digital-to-analog conversion module, so that the digital-to-analog conversion module generates a comparison voltage according to the boosted voltage value;
the charging monitoring module is used for acquiring the comparison voltage, acquiring the voltage of the energy storage capacitor module through the sampling module, and generating the charging state of the energy storage capacitor module according to the comparison voltage and the voltage of the energy storage capacitor module;
the charging control module is also used for acquiring the charging state and continuing or stopping charging the energy storage capacitor module according to the charging state;
the charging monitoring module is also used for sending the charging state to the logic control module;
and the logic control module is also used for sending a feedback signal to the communication module according to the charging state so as to enable the communication module to obtain a next charging instruction.
2. The electronic detonator energy storage capacitor charging control device of claim 1, wherein the communication module is electrically connected with the initiation device through a detonator pin.
3. The electronic detonator energy storage capacitor charging control device of claim 2 further comprising a rectifying module; the rectifying module comprises a plurality of diodes which are connected end to end in sequence;
the input end of the rectification module is electrically connected with the detonator pin and the communication module respectively;
the output end of the rectifying module is electrically connected with the charging control module, the charging monitoring module, the digital-to-analog conversion module and the energy storage capacitor module respectively.
4. The electronic detonator energy storage capacitor charging control device of claim 3, wherein the charging control module comprises a NAND gate and a charging switch.
5. The electronic detonator energy storage capacitor charging control device of claim 3 wherein the charging monitoring module comprises a comparator.
6. The electronic detonator energy storage capacitor charging control device of claim 3 wherein the sampling module comprises a first resistor and a second resistor, the first resistor and the second resistor being connected in series;
one end of the first resistor and one end of the second resistor are electrically connected with the charging monitoring module;
the other end of the first resistor is electrically connected with the energy storage capacitor module, and the other end of the second resistor is grounded.
7. The electronic detonator energy storage capacitor charging control device according to any one of claims 3 to 6, further comprising: a freewheeling diode, a voltage regulator and a supply voltage module;
the output end of the rectification module is electrically connected with the cathode of the freewheeling diode and the charging switch respectively;
the voltage stabilizer is electrically connected with the cathode of the freewheeling diode and the power supply voltage module respectively;
and the anode of the freewheeling diode is in communication connection with the energy storage capacitor module.
8. The electronic detonator energy storage capacitor charging control device according to any one of claims 3 to 6, further comprising: an ignition module; the ignition module comprises an ignition bridge wire and an ignition switch;
the energy storage capacitor module is electrically connected with the ignition switch through the ignition bridge wire;
the ignition switch is electrically connected with the logic control module.
9. An electronic detonator comprising the electronic detonator energy storage capacitor charging control device as claimed in any one of claims 1 to 8.
10. An electronic detonator system characterized by comprising the electronic detonator of claim 9.
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Application publication date: 20210706 |