Electronic detonator detonation control method, system and circuit

Abstract

The invention relates to the technical field of electronic detonator detonation control, and discloses an electronic detonator detonation control method, system and circuit. The detonating control method is applied to the electronic detonating equipment and specifically comprises the following steps that S101, a detonating instruction of an upper computer is received, and the detonating instruction carries a detonating command of a current electronic detonator and the delay duration of the electronic detonator; s102, obtaining a detonation instruction of the electronic detonator, inputting the detonation instruction into a preset content recognition model, and obtaining a content recognition result output by the content recognition model based on the detonation instruction. According to the method, the identification of the detonation instruction is firstly completed through the set detonation instruction, the corresponding energy charging detonation delay is performed after the identification, the detonation instruction of the current electronic detonator and the delay duration of the electronic detonator can be effectively executed and implemented, and the information collection and feedback are set in the energy charging process before the ignition operation.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic detonator blasting control, and more particularly, to a method, a system and a circuit for controlling the initiation of electronic detonators. Background Art

[0002] In most blasting operations, industrial digital electronic detonators are usually connected in parallel in a network and start delayed initiation simultaneously. However, in some special application fields, such as oil and gas well exploitation, it is necessary to selectively initiate each electronic detonator in the network one by one.

[0003] In a parallel network, after a certain electronic detonator is initiated, due to possible signal or internal delay not being in place, the electronic detonator always fails to detonate at the preset time, and it is impossible to ensure that the blasting intensity is within the preset range, which affects the construction progress after blasting and needs to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a method, a system and a circuit for controlling the initiation of electronic detonators. Through a set initiation command, the system reference voltage output by the reference voltage module within the full temperature range is used to complete the ignition operation, ensuring that the initiation command of the current electronic detonator and the delay duration of the electronic detonator can be effectively executed and implemented, aiming to solve the problems in the prior art.

[0005] The present invention is implemented as follows. A method for controlling the initiation of electronic detonators, which is applied to an electronic initiation device, specifically includes the following steps:

[0006] S101: Receive an initiation command from the host computer, where the initiation command carries the initiation command of the current electronic detonator and the delay duration of the electronic detonator;

[0007] S102: Obtain the initiation command of the electronic detonator, input the initiation command into a preset content recognition model, obtain the content recognition result output by the content recognition model based on the initiation command, and obtain the initiation index coefficient of the initiation command from the content recognition result;

[0008] S103: The HV chip in the electronic initiation device receives the initiation index coefficient, generates a delay pulse, controls the power supply of the ignition capacitor and the energy storage capacitor by turning on the MOS transistor, and simultaneously starts the delay count for charging;

[0009] S104: The pre - step - down / reference circuit in the electronic initiation device provides a bias current and a reference voltage for the HV chip at the initial power - on time. After pre - step - down, under the trim conditions configured in the system, the system reference voltage output by the reference voltage module within the full temperature range is used to complete the ignition operation;

[0010] S105: During the ignition operation, the temperature sensor connected to the HV chip is used to monitor the current temperature value during charging, and the acquired temperature value is quantized by VBE voltage deltaVBE to complete the voltage signal amplification processing, and a digital domain single-point TRIM is performed at room temperature to complete the accurate recovery of the electronic detonator blasting parameters before the blasting is completed.

[0011] Furthermore, in S101, receiving a detonation instruction from a host computer includes:

[0012] Receiving a connection request sent by a host computer through a preset frequency signal, wherein the connection request is used to request to establish a connection with the electronic detonation device;

[0013] Detect whether the current account of the host computer is an independent target account of the host computer;

[0014] If the current account of the host computer is the independent target account of the host computer, the host computer is connected according to the connection request, and after the connection is completed, the detonation instruction of the host computer is received.

[0015] Furthermore, the preset frequency signal includes one or more of a radio frequency signal, a Bluetooth signal, and a far infrared signal.

[0016] Furthermore, in S102, the detonation instruction is input into a preset content recognition model, and a content recognition result output by the content recognition model based on the detonation instruction is obtained, including:

[0017] Acquire multiple content recognition models, and sort the multiple content recognition models in the order of recognition explosion index coefficients required for explosion;

[0018] The content data of the detonation instruction is obtained, and the content data is input into the content recognition model ranked first.

[0019] Further, in S103, the HV chip in the electronic initiation device receives the initiation index coefficient, wherein the initiation index coefficient integrates two RC oscillation rings on the electronic detonator, which are respectively used for two counting modes, including:

[0020] The first RC oscillation ring, 8M RC-OSC, in internal counting mode, the HV chip receives the host computer command, generates a delay pulse under the command control, and controls the MOS tube to turn on;

[0021] The second RC oscillation ring, 200K RC-OSC, in external counting mode, the HV chip receives the host computer command, and under the command control, starts the TC unit and the external calibration clock counting.

[0022] Further, controlling the power supply of the ignition capacitor and the energy storage capacitor of the MOS transistor includes:

[0023] The ignition capacitor and the energy storage capacitor store the high-voltage ignition energy provided by the external IO pin TX. The ignition capacitor is 100 uF and provides energy for the heating wire. The energy storage capacitor is 22 uF and provides energy for the normal operation of the HV chip.

[0024] A current limiting circuit is provided inside the ignition capacitor to sample the capacitor charging current, compare it with the reference current limiting value, and control the gate voltage of the power transistor through negative feedback to ensure a constant charging current.

[0025] A current limiting circuit is provided inside the energy storage capacitor to sample the capacitor charging current, compare it with the reference current limiting value, and control the gate voltage of the power transistor through negative feedback to ensure a constant charging current.

[0026] Further, after pre-step-down, under the trim conditions configured by the system, the ignition operation is completed within the fluctuation range of the system reference voltage output by the reference voltage module within the full temperature range, including:

[0027] The reference voltage module designs 6-bit trim to reduce the temperature drift characteristics of the reference output under different process corners and adjusts the normal temperature output of BG to 1.185 V.

[0028] The 6-bit trim is the trimming result for the process corner. The Trim value is selected according to the actual production parameters and test results and written into the MTP of the chip to complete the trimming of the circuit, so as to ensure that the fluctuation range of the output system reference voltage maintains the ignition operation.

[0029] Compared with the prior art, an electronic detonator initiation control method, system and circuit provided by the present invention have the following beneficial effects:

[0030] 1. Through the set initiation command, the initiation command is first recognized. After recognition, the corresponding energy storage and blasting delay are carried out. And during the blasting delay, the bias current and reference voltage are provided for the HV chip by the step-down / reference circuit at the initial power-on time. After pre-step-down, under the trim conditions configured by the system, the ignition operation is completed within the fluctuation range of the system reference voltage output by the reference voltage module within the full temperature range, ensuring that the initiation command of the current electronic detonator and the delay time of the electronic detonator can be effectively executed and implemented. And the information collection and feedback set during the energy storage process before the ignition operation perfectly solve the problem that due to the signal or internal delay not being in place, the electronic detonator always fails to detonate at the preset time and cannot ensure that the blasting intensity is within the preset range.

[0031] 2. The temperature sensor integrates a high-precision ADC. The ΔBE level signal output by the Bandgap is sent to the deltasigma ADC. The maximum conversion rate of this ADC is 30KSPS, and the design accuracy can exceed 18Bit. The circuit also includes a programmable amplifier, a common-mode voltage generation circuit, a fourth-order analog modulator, a digital SINC5+SINC1 filter, and a digital controller, enabling the stable output of the detonation ignition energy and the charging current and voltage, and matching the preset delay to ensure the accuracy of the delay. Moreover, for the high-precision ADC under different transistor process corners, the ADC output data can be calibrated for offset readings to obtain the normalized error. Theoretically, the temperature accuracy within the full temperature range is + / -0.2°C.

[0032] An electronic detonator initiation control system for implementing the above-mentioned initiation control method, the initiation control system includes:

[0033] An acquisition module for receiving the initiation instruction from the host computer;

[0034] An identification module for inputting the initiation instruction into a preset content identification model and obtaining the content identification result output by the content identification model based on the initiation instruction;

[0035] A charging module for receiving the initiation index coefficient, generating a delay pulse, and controlling the power supply of the ignition capacitor and the energy storage capacitor by turning on the MOS transistor;

[0036] A reference matching module for providing a bias current and a reference voltage for the HV chip at the initial power-on time. After pre-step-down, under the trim conditions configured in the system, the reference voltage module completes the ignition operation within the fluctuation range of the system reference voltage output within the full temperature range;

[0037] An acquisition module for monitoring and collecting the current temperature value during charging, quantifying the obtained temperature value with the VBE voltage to amplify the deltaVBE voltage signal, performing digital domain single-point TRIM at normal temperature, and accurately recovering the blasting parameters of the electronic detonator before blasting is completed.

[0038] An electronic detonator initiation control circuit for implementing the above-mentioned initiation control method, the circuit includes:

[0039] An HV chip for receiving and identifying the initiation instruction;

[0040] An ignition capacitor current limiting circuit for providing energy for the heating wire;

[0041] An energy storage capacitor current limiting circuit for providing energy for the normal operation of the HV chip;

[0042] A pre-step-down / reference circuit for providing a bias current and a reference voltage for the HV chip at the initial power-on time;

[0043] Integrate a 3.3V LDO first linear regulator and a 1.8V LDO second linear regulator to power the high voltage circuit and digital circuit respectively;

[0044] Integrates two RC oscillator rings: 8M RC-OSC, 200K RC-OSC, used for two counting modes respectively;

[0045] Integrated temperature sensor to collect current temperature value;

[0046] Integrated small capacity MTP (2Kx16bit) for recording system parameters and adjustment data;

[0047] An integrated digital state machine is used to record and modify the pulse generator's counting width according to the temperature value.

[0048] Specifically, the temperature sensor is integrated with a high-precision ADC. The high-precision ADC is affected by process deviations and changes in transistor corners, resistor corners, and manufacturing mismatches, which cause VBE voltage deviations, i.e., bias current changes. The bias current causes changes in current amplification factors, i.e., saturation current changes. High-resolution and high-precision conversion can be obtained through single-point TRIM and DEM+CHOP. In the high-precision mode, the detonation control circuit controls the TC unit to enter the high-precision timing mode through the MCU-SPI master mode interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A schematic flow chart of an electronic detonator detonation control method proposed by the present invention;

[0050] Figure 2 This is a structural schematic diagram of an electronic detonator initiation control system proposed by the present invention;

[0051] Figure 3 A circuit structure diagram of an HV chip in an electronic detonator detonation control circuit proposed by the present invention;

[0052] Figure 4 A circuit structure diagram of an ignition capacitor in an electronic detonator detonation control circuit proposed by the present invention;

[0053] Figure 5 A circuit structure diagram of an energy storage capacitor in an electronic detonator detonation control circuit proposed by the present invention;

[0054] Figure 6 A circuit structure diagram of a pre-voltage reduction / reference circuit in an electronic detonator detonation control circuit proposed by the present invention;

[0055] Figure 7The circuit diagram for simulating and verifying the load regulation rate of the first linear regulator in an electronic detonator initiation control circuit proposed by the present invention;

[0056] Figure 8 The circuit structure diagram of the second linear regulator in an electronic detonator initiation control circuit proposed by the present invention;

[0057] Figure 9 The circuit structure diagram of the first RC oscillator in an electronic detonator initiation control circuit proposed by the present invention;

[0058] Figure 10 The circuit structure diagram of the second RC oscillator in an electronic detonator initiation control circuit proposed by the present invention;

[0059] Figure 11 The circuit structure diagram of the temperature sensor in an electronic detonator initiation control circuit proposed by the present invention. Detailed implementation manners

[0060] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0061] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0062] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be understood as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0063] Refer to Figure 1 As shown, an electronic detonator initiation control method is applied to an electronic initiation device, and specifically includes the following steps:

[0064] S101: Receive the initiation instruction from the upper computer. The initiation instruction carries the initiation command of the current electronic detonator and the delay duration of the electronic detonator;

[0065] Among them, receiving the initiation instruction from the upper computer includes:

[0066] Receive a connection request sent by the host computer through a preset frequency signal. The connection request is used to request to establish a connection with the electronic detonator device;

[0067] Detect whether the current account of the host computer is the independent target account of the host computer;

[0068] If the current account of the host computer is the independent target account of the host computer, connect to the host computer according to the connection request. After the connection is completed, receive the detonation instruction of the host computer;

[0069] S102: Obtain the detonation instruction of the electronic detonator, input the detonation instruction into a preset content recognition model, obtain the content recognition result output by the content recognition model based on the detonation instruction, and obtain the detonation index coefficient of the detonation instruction from the content recognition result;

[0070] Among them, inputting the detonation instruction into a preset content recognition model and obtaining the content recognition result output by the content recognition model based on the detonation instruction includes:

[0071] Obtain multiple content recognition models, and sort the multiple content recognition models in the order of the detonation index coefficients required for blasting;

[0072] Obtain the content data of the detonation instruction, and input the content data into the content recognition model ranked first;

[0073] S103: The HV chip in the electronic detonator device receives the detonation index coefficient, generates a delay pulse, controls the MOS transistor to turn on the power supply of the ignition capacitor and the energy storage capacitor, and synchronously starts the delay counting for charging;

[0074] Among them, the HV chip in the electronic detonator device receives the detonation index coefficient. The detonation index coefficient integrates two RC oscillation loops on the electronic detonator, which are respectively used for two counting modes, including:

[0075] The first RC oscillation loop, 8M RC-OSC. In the internal counting mode, the HV chip receives the host computer instruction and generates a delay pulse under the command control to control the MOS transistor to turn on;

[0076] The second RC oscillation loop, 200K RC-OSC. In the external counting mode, the HV chip receives the host computer instruction and starts the TC unit and the external calibration clock counting under the command control;

[0077] S104: The pre-step-down / reference circuit in the electronic detonator device provides a bias current and a reference voltage for the HV chip at the initial power-on time. After pre-step-down, under the trim condition configured by the system, the reference voltage module completes the ignition operation within the fluctuation range of the system reference voltage output over the full temperature range;

[0078] S105: During the ignition operation, the temperature sensor connected to the HV chip is used to monitor and collect the current temperature value during charging. The temperature sensor integrates a high-precision ADC. The ΔBE level signal output by the Bandgap is sent to the delta sigma ADC. The maximum conversion rate of this ADC is 30KSPS, and the design accuracy can exceed 18Bit. The obtained temperature value is used to quantify the deltaVBE with the VBE voltage to complete the voltage signal amplification process. A digital domain single-point TRIM is performed at room temperature, and the precise recovery of the blasting parameters of the electronic detonator is completed before blasting. Through the set initiation instruction, the initiation instruction is first identified. After identification, the corresponding charging and blasting delay is carried out. And during the blasting delay, a bias current and a reference voltage are provided for the HV chip by the buck / reference circuit at the initial power-on time. After pre-buckling, under the trim conditions configured by the system, the ignition operation is completed within the fluctuation range of the system reference voltage output by the reference voltage module over the full temperature range, ensuring that the initiation command of the current electronic detonator and the delay duration of the electronic detonator can be effectively executed and implemented, and the information collection and feedback set during the charging process before the ignition operation.

[0079] In this embodiment, the preset frequency signal includes one or more of radio frequency signals, Bluetooth, and far-infrared signals.

[0080] In this embodiment, controlling the MOS transistor to turn on the power supply of the ignition capacitor and the energy storage capacitor includes:

[0081] The ignition capacitor and the energy storage capacitor store the high-voltage ignition energy provided by the external IO pin TX. The ignition capacitor is 100uF and provides energy for the heating wire. The energy storage capacitor is 22uF and provides energy for the normal operation of the HV chip;

[0082] A current limiting circuit is provided inside the ignition capacitor to sample the capacitor charging current, compare it with the reference current limiting value, and control the gate voltage of the power transistor through negative feedback to ensure a constant charging current;

[0083] A current limiting circuit is provided inside the energy storage capacitor to sample the capacitor charging current, compare it with the reference current limiting value, and control the gate voltage of the power transistor through negative feedback to ensure a constant charging current.

[0084] In this embodiment, after pre-buckling, under the trim conditions configured by the system, the ignition operation is completed within the fluctuation range of the system reference voltage output by the reference voltage module over the full temperature range, including:

[0085] The reference voltage module designs a 6bit trim to reduce the temperature drift characteristics of the reference output under different process corners and adjusts the normal temperature output of the BG to 1.185V;

[0086] The 6-bit trim is the trimming result for the process corner. The Trim value is selected according to the actual production parameters and test results and written into the MTP of the chip to complete the trimming of the circuit, so as to ensure that the fluctuation range of the output system reference voltage maintains the ignition operation.

[0087] This technical solution perfectly solves the problem that due to the signal or internal delay not being in place, the electronic detonator always fails to detonate at the preset time and cannot ensure that the blasting intensity is within the preset range. First, the detonation command is identified, and after the identification, the corresponding charging blasting delay is carried out. And during the blasting delay, the bias current and reference voltage are provided for the HV chip at the initial power-on time through the step-down / reference circuit. After pre-step-down, under the trim conditions configured by the system, the fluctuation range of the system reference voltage output by the reference voltage module within the full temperature range completes the ignition operation, ensuring that the detonation command of the current electronic detonator and the delay duration of the electronic detonator can be effectively executed and implemented, and information collection and feedback are set during the charging process before the ignition operation.

[0088] Refer to Figure 2 As shown, an electronic detonator detonation control system is used to execute the above detonation control method. The detonation control system includes:

[0089] An acquisition module for receiving the detonation command from the host computer;

[0090] An identification module for inputting the detonation command into a preset content identification model and obtaining the content identification result output by the content identification model based on the detonation command;

[0091] A charging module for receiving the detonation index coefficient, generating a delay pulse, and controlling the power supply of the ignition capacitor and the energy storage capacitor by turning on the MOS transistor;

[0092] A reference matching module for providing a bias current and a reference voltage for the HV chip at the initial power-on time. After pre-step-down, under the trim conditions configured by the system, the fluctuation range of the system reference voltage output by the reference voltage module within the full temperature range completes the ignition operation;

[0093] The acquisition module is used to monitor the current temperature value during charging, and use the VBE voltage quantization deltaVBE to complete the voltage signal amplification processing, perform digital domain single-point TRIM at room temperature, and complete the accurate recovery of the electronic detonator blasting parameters before the blasting is completed. The temperature sensor of this technical solution is integrated with a high-precision ADC, and the ΔBE level signal output in the Bandgap is sent to the delta sigma ADC. The maximum conversion rate of the ADC is 30KSPS, and the design accuracy can exceed 18Bit. The circuit also includes a programmable amplifier, a common-mode voltage generation circuit, a fourth-order analog modulator, a digital SINC5+SINC1 filter, and a digital controller, so that the detonation ignition energy and the charging current and voltage are output stably, and are matched with the preset delay to ensure the accuracy of the delay. Moreover, the high-precision ADC can calibrate the ADC output data for offset reading under different transistor process angles to obtain the normalized error. Theoretically, the temperature accuracy is + / -0.2C within the full temperature range.

[0094] Reference Figures 3 - 11 As shown, an electronic detonator detonation control circuit is used to execute the above-mentioned detonation control method, and the circuit includes:

[0095] HV chip, to receive and identify the detonation command;

[0096] The ignition capacitor current limiting circuit provides energy for the heating wire. The ignition capacitor current limiting circuit samples the capacitor charging current, compares it with the reference current limiting value, and controls the power tube gate voltage through negative feedback to ensure a constant charging current. After the TX pin is charged, it enters the communication stage. At this time, the voltage range is 0V~3.3V. In order to avoid the ignition capacitor current backflow, a Schottky diode is introduced to block the reverse current;

[0097] The energy storage capacitor current limiting circuit provides energy for the normal operation of the HV chip. The energy storage capacitor current limiting circuit samples the capacitor charging current, compares it with the reference current limiting value, and controls the power tube gate voltage through negative feedback to ensure a constant charging current. After the TX pin is charged, it enters the communication stage. At this time, the voltage range is 0V~3.3V. In order to avoid the backflow of the ignition capacitor current, a Schottky diode is introduced to block the reverse current;

[0098] The pre-step-down / reference circuit provides bias current and reference voltage for the HV chip at the initial power-on time. The simulation technology is used to simulate the working point of the pre-step-down and reference circuits. After pre-step-down, under the trim conditions of the system configuration, the fluctuation range of the system reference voltage output by the reference voltage module in the full temperature range (-60℃-100℃) is 1.185, and the center point offset is <±4mv, achieving the system design goal;

[0099] Trim is the trimming result for process corners. Before the chip is shipped, the Trim value is selected according to the actual production parameters and test results and written into the MTP of the chip to trim the circuit.

[0100] Integrate a 3.3V LDO first linear regulator and a 1.8V LDO second linear regulator to supply power to the high-voltage circuit and the digital circuit respectively. Under the condition of no load on the load, there is no overshoot during the power-on process, the loop has no self-oscillation, the loop is stable, and the PSRR in the full frequency band is good.

[0101] Integrate two RC oscillator loops: 8M RC-OSC and 200K RC-OSC, which are used for two counting modes respectively.

[0102] a) Two timing modes: 1S@10us by 8MHz / 125ns RC -> counting accuracy 1us;

[0103] b) Counter range: 8M cycle => 23bit cnt;

[0104] c) 200S@1ms by 200KHz / 5us RC -> counting accuracy 100us;

[0105] d) Counter range: 40M cycle => 26bit cnt;

[0106] The OSC_16MRC oscillator circuit outputs the 8MHz clock required by the system. It operates in the 1.8V voltage domain. To meet the frequency output of 8MHz under different process corners, a 6-bit trim is designed to trim the OSC oscillation frequency; the OSC_500KRC oscillator circuit outputs the 500KHz clock required by the system. It operates in the 1.8V voltage domain. To meet the frequency output of 500KHz under different process corners, a 5-bit trim is designed to trim the OSC oscillation frequency.

[0107] Integrate a temperature sensor to collect the current temperature value.

[0108] Integrate a small-capacity MTP (2Kx16bit) to record system parameters and trimming data.

[0109] Integrate a digital state machine to record and correct the counting width of the pulse generator according to the temperature value.

[0110] The temperature sensor is integrated with a high-precision ADC. The high-precision ADC is affected by process deviations and changes in transistor corners, resistor corners, and manufacturing mismatch, which causes VBE voltage deviations, i.e., bias current changes. The bias current causes changes in current amplification factors, i.e., saturation current changes. High-resolution and high-precision conversions can be obtained through single-point TRIM and DEM+CHOP. In the high-precision mode, the detonation control circuit controls the TC unit to enter the high-precision timing mode through the MCU-SPI master mode interface.

[0111] The specific calculation mode is as follows:

[0112]

[0113] This technical solution perfectly solves the problem that the electronic detonator is always not detonated at the preset time due to the lack of signal or internal delay, and the blasting intensity cannot be guaranteed to be within the preset range. In addition, the temperature sensor is integrated with a high-precision ADC. The ΔBE level signal output by the Bandgap is sent to the delta sigma ADC. The maximum conversion rate of the ADC is 30KSPS, and the design accuracy can exceed 18Bit, so that the detonation ignition energy and the charging current and voltage are stably output and matched with the preset delay to ensure the accuracy of the delay. In addition, the high-precision ADC can calibrate the ADC output data for offset reading under different transistor process angles to obtain the normalized error. Theoretically, the temperature accuracy is + / -0.2C within the full temperature range.

[0114] The circuit detonation logic of the present technical solution is: first, the identification of the detonation instruction is completed, and the corresponding charging blasting delay is performed after the identification, and during the blasting delay, the bias current and reference voltage are provided to the HV chip at the initial power-on time through the step-down / reference circuit. After pre-step-down, under the trim conditions of the system configuration, the reference voltage module completes the ignition operation within the fluctuation range of the system reference voltage output within the full temperature range, ensuring that the current electronic detonator detonation command and the delay time of the electronic detonator can be effectively executed and implemented, and the information collection and feedback set in the charging process before the ignition operation.

[0115] In this embodiment, the entire operation process can be controlled by a computer and signal feedback is provided to implement the steps in sequence. These are all conventional knowledge of current automated control and will not be described in detail in this embodiment.

[0116] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention.

[0117]

[0118] Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of T = K * μ + B shall be included within the scope of protection of this invention.

Claims

1. An electronic detonator initiation control method, characterized in that Applied to an electronic initiation device, specifically including the following steps: S101: Receive the initiation command from the host computer. The initiation command carries the initiation command of the current electronic detonator and the delay duration of the electronic detonator; S102: Obtain the initiation command of the electronic detonator, input the initiation command into a preset content recognition model, obtain the content recognition result output by the content recognition model based on the initiation command, and in the content recognition result, obtain the initiation index coefficient of the initiation command; S103: The HV chip in the electronic initiation device receives the initiation index coefficient, generates a delay pulse, controls the MOS transistor to turn on the power supply of the ignition capacitor and the energy storage capacitor, and simultaneously starts the delay count for charging; S104: The pre-step-down / reference circuit in the electronic initiation device provides a bias current and a reference voltage for the HV chip at the initial power-on time. After pre-step-down, under the trim conditions configured by the system, the reference voltage module completes the ignition operation within the fluctuation range of the system reference voltage output within the full temperature range; S105: During the ignition operation, the temperature sensor connected to the HV chip is used to monitor the current temperature value during charging, and the obtained temperature value is quantified by the VBE voltage to complete the voltage signal amplification processing of deltaVBE. A digital domain single-point TRIM is performed at room temperature, and the accurate recovery of the blasting parameters of the electronic detonator is completed before blasting.

2. The electronic detonator initiation control method according to claim 1, characterized in that, In S101, receiving the initiation command from the host computer includes: Receiving the connection request sent by the host computer through a preset frequency signal. The connection request is used to request to establish a connection with the electronic initiation device; Detecting whether the current account of the host computer is the independent target account of the host computer; If the current account of the host computer is the independent target account of the host computer, connect to the host computer according to the connection request. After the connection is completed, receive the initiation command from the host computer.

3. The electronic detonator initiation control method according to claim 2, wherein The preset frequency signal includes one or several of radio frequency signals, Bluetooth, and far-infrared signals.

4. The electronic detonator detonation control method according to claim 3, wherein In S102, inputting the initiation command into a preset content recognition model and obtaining the content recognition result output by the content recognition model based on the initiation command includes: Obtaining multiple content recognition models, and sorting the multiple content recognition models in the order of the explosion index coefficients required for blasting; Obtaining the content data of the initiation command, and inputting the content data into the first sorted content recognition model.

5. The electronic detonator initiation control method according to claim 4, characterized in that, In S103, the HV chip in the electronic initiation device receives the initiation index coefficient. Among them, the initiation index coefficient integrates two RC oscillation rings on the electronic detonator, which are respectively used for two counting modes, including: The first RC oscillation ring, 8M RC-OSC. In the internal counting mode, the HV chip receives the host computer command, generates a delay pulse under the command control, and controls the MOS transistor to turn on; The second RC oscillation ring, 200K RC-OSC. In the external counting mode, the HV chip receives the host computer command, and under the command control, starts the TC unit and the external calibration clock counting.

6. The electronic detonator detonation control method according to claim 5, wherein, Control the power supply of the ignition capacitor and the energy storage capacitor by the MOS transistor, including: The ignition capacitor and the energy storage capacitor store the high-voltage ignition energy provided by the external IO pin TX. The ignition capacitor is 100 uF and provides energy for the heating wire. The energy storage capacitor is 22 uF and provides energy for the normal operation of the HV chip. A current limiting circuit is provided inside the ignition capacitor to sample the capacitor charging current, compare it with a reference current limiting value, and control the gate voltage of the power transistor through negative feedback to ensure a constant charging current. A current limiting circuit is provided inside the energy storage capacitor to sample the capacitor charging current, compare it with a reference current limiting value, and control the gate voltage of the power transistor through negative feedback to ensure a constant charging current.

7. The electronic detonator detonation control method according to claim 6, characterized in that In S104, after pre-step-down, under the trim conditions configured by the system, the ignition operation is completed within the fluctuation range of the system reference voltage output by the reference voltage module over the full temperature range, including: The reference voltage module is designed with 6-bit trim to reduce the temperature drift characteristics of the reference output at different process corners and trim the BG normal temperature output to 1.185 V. The 6-bit trim is the trimming result for the process corner. The Trim value is selected according to the actual production parameters and test results and written into the MTP of the chip to complete the trimming of the circuit, so as to ensure that the fluctuation range of the output system reference voltage maintains the ignition operation.

8. An electronic detonator initiation control system, characterized in that, For implementing the initiation control method according to any one of claims 1-7, the initiation control system includes: An acquisition module for receiving the initiation instruction from the host computer. An identification module for inputting the initiation instruction into a preset content identification model and obtaining the content identification result output by the content identification model based on the initiation instruction. An energy charging module for receiving the initiation index coefficient, generating a delay pulse, and controlling the power supply of the ignition capacitor and the energy storage capacitor by the MOS transistor. A reference matching module for providing a bias current and a reference voltage for the HV chip at the initial power-on time. After pre-step-down, under the trim conditions configured by the system, the ignition operation is completed within the fluctuation range of the system reference voltage output by the reference voltage module over the full temperature range. A collection module for monitoring and collecting the current temperature value during energy charging, quantifying the obtained temperature value with the VBE voltage to complete the voltage signal amplification process, performing digital domain single-point TRIM at normal temperature, and accurately recovering the blasting parameters of the electronic detonator before blasting is completed.

9. An electronic detonator initiation control circuit, characterized in that, For implementing the initiation control method according to any one of claims 1-7, the circuit includes: An HV chip for receiving and identifying the initiation instruction. An ignition capacitor current limiting circuit for providing energy for the heating wire. An energy storage capacitor current limiting circuit for providing energy for the normal operation of the HV chip. A pre-step-down / reference circuit for providing a bias current and a reference voltage for the HV chip at the initial power-on time. Integrate a 3.3V LDO first linear regulator and a 1.8V LDO second linear regulator to supply power to the high-voltage circuit and the digital circuit respectively. Integrate two RC oscillator rings: 8M RC-OSC and 200K RC-OSC, which are used for two counting modes respectively. Integrate a temperature sensor for collecting the current temperature value. Integrated small-capacity MTP (2Kx16bit) is used to record system parameters and trimming data; An integrated digital state machine records and corrects the counting width of the pulse generator according to the temperature value.

10. An electronic detonator initiation control circuit according to claim 9, characterized in that, The temperature sensor is integrated with a high-precision ADC. The high-precision ADC is affected by process deviations, as well as the changes of transistor corners, resistor corners, and manufacturing mismatches, resulting in VBE voltage deviations, that is, bias current changes. The bias current causes changes in the current amplification factor, that is, saturation current changes. High-resolution and high-precision conversion can be obtained through the methods of single-point TRIM and DEM+CHOP; In the high-precision mode, the initiation control circuit controls the TC unit to enter the high-precision timing mode through the MCU-SPI master mode interface.

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