Digital electronic detonator exploder with high border inspection flow and detonation method

Abstract

The invention relates to the technical field of digital electronic detonator exploders, in particular to a digital electronic detonator exploder with high border inspection current, which comprises a control unit and a BUS protection unit, the BUS protection unit is electrically connected with the control unit, and the control unit is used for processing coordination work and business logic of each peripheral unit; the BUS protection unit is used for anti-interference processing during communication between the exploder and the digital electronic detonator; the BUS protection unit comprises a current detection circuit, the current detection circuit is connected with the power rail end of the power supply, and the current detection circuit is used for short circuit detection, open circuit detection, electric leakage detection and load network state detection of the digital electronic detonator network. According to the invention, on the basis of a low-current sampling circuit by using a high-edge current detection technology, a sampling resistor for sampling low current is arranged between a power supply and a load detonator network in combination with a high-precision ADC, so that the circuit structure greatly reduces the condition of interference from a ground wire, and improves the communication reliability of the detonator and the digital electronic detonator network.

Description

Technical Field

[0001] The present application relates to the technical field of digital electronic detonator initiators, and in particular to a high-side current digital electronic detonator initiator and a method thereof. Background Art

[0002] In the initiator of digital electronic detonators, the industry often uses the low-side current detection method. Figure 1 It can be seen that in the low-side current detection method, the current sampling circuit is placed on the ground track inside the detonator. Although this method reduces the technical requirements of the current detection amplifier, it is easily affected by the interference of the ground wire, which in turn affects the reliability of communication. When the load network is short-circuited, the sampling circuit may be bypassed, and the load network short circuit cannot be detected, which greatly limits the application and use effect. Secondly, the single-shot power consumption of digital electronic detonators is not high, and the current during communication is relatively small, which belongs to small current detection. Low-side current detection is suitable for application scenarios with large load currents, and low-side detection technology is not very suitable for this.

[0003] Therefore, how to solve the problems of short circuit detection, open circuit detection, leakage detection and load network status detection between the detonator and the digital electronic detonator load network, and thus ensure construction safety is a problem that needs to be solved by technical personnel in this field. Summary of the invention

[0004] Based on this, it is necessary to provide a high-side current digital electronic detonator initiator and initiation method to address the above technical problems.

[0005] In a first aspect, the present application provides a digital electronic detonator initiator with high edge detection current, comprising: a control unit and a BUS protection unit, the BUS protection unit being electrically connected to the control unit, the control unit being used to process the coordination work and business logic of each peripheral unit; The BUS protection unit is used for anti-interference processing during communication between the initiator and the digital electronic detonator; The BUS protection unit comprises: a current detection circuit, the current detection current is connected to the power rail end of the power supply, and the current detection circuit is used for short circuit detection, open circuit detection, leakage detection and load network status detection of the digital electronic detonator network.

[0006] In one embodiment, the current sensing circuit includes: A CPU unit, the CPU unit is connected to the control unit, and the CPU unit controls the current detection circuit; An analog-to-digital converter, wherein a first end of the analog-to-digital converter is connected to the CPU unit, and the analog-to-digital converter is used to convert an analog signal into a digital signal; A high-side current-sensing operational amplifier, wherein a first end of the high-side current-sensing operational amplifier is connected to a second end of the analog-to-digital converter, and a second end and a third end of the high-side current-sensing operational amplifier are connected to a digital electronic detonator; The second terminal and the third terminal of the high-side current-sense operational amplifier are connected to a diode with electrostatic protection and a transient voltage suppression diode; A first resistor, wherein a first end of the first resistor is connected to a second end of the analog-to-digital converter, and a second end of the first resistor is connected to the high-side current-sense amplifier; A second resistor, wherein a first end of the second resistor is connected to the high-side current-sense amplifier, and a second end of the second resistor is connected to the transient voltage suppression diode.

[0007] In one embodiment, the analog-to-digital converter reference has a fixed output of 4.096V with an accuracy of up to ±0.1% and a temperature stability of up to 8ppm / °C.

[0008] In one embodiment, the high-side current-sense op amp can automatically zero the front end to obtain Vos, with an ultra-low offset voltage Vos of 25µV maximum; the current sense input common-mode voltage range is +1.9V to +28V.

[0009] In one embodiment, a high-side current-sense op amp continuously measures and cancels input offset voltage, eliminating drift due to time, temperature, and 1 / f noise effects.

[0010] In one embodiment, it also includes: A storage unit, used for acquiring registration information, log and control record information of the digital electronic detonator; The power supply unit is used to provide working power to the detonator, and has built-in lithium battery power monitoring and charging management; A positioning unit, used to obtain the position information of the detonator; The on / off management unit is used to process the on / off action of the detonator; The detonation button unit is used to execute the sending of the detonation command and then detonate the digital electronic detonator; The Bluetooth communication unit is used for the interaction of business data between the detonator and the mobile phone application APP.

[0011] In a second aspect, the present application also provides a method for detonating a digital electronic detonator initiator with a high edge detection current, comprising: The sampled voltage at both ends of the sampling resistor is amplified by an analog-to-digital converter, wherein the current is sampled at a time of 2.5us and the sampled data is stored in an array; Eliminate abnormal data on the BUS; Scan the entire data, compare the trends of the front window data and the rear window data, identify the rising edge or falling edge of the signal, and extract single bits according to the time window; The data is concatenated in a loop until all the data is processed, and finally valid Frame data in Byte units is formed; After parsing the command word and checking the check value, the digital electronic detonator executes each command action according to the command word; The application layer performs logical processing on the received current data and completes the short circuit detection, open circuit detection and leakage detection of the BUS according to different current thresholds.

[0012] In one embodiment, removing abnormal data on the BUS includes: Eliminate the abnormal values ​​with higher or lower amplitudes; Eliminate the glitch data that is observed to have an amplitude higher than the normal value but is not continuous in one bit; It can be observed that there is no obvious trend in the data of 1 bit, the overshoot data with higher than normal amplitude is smoothed, and the concave data with lower than normal value is averaged and compensated.

[0013] In a third aspect, the present application further provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and wherein the processor implements the following steps when executing the computer program: The sampled voltage at both ends of the sampling resistor is amplified by an analog-to-digital converter, wherein the current is sampled at a time of 2.5us and the sampled data is stored in an array; Eliminate abnormal data on the BUS; Scan the entire data, compare the trends of the front window data and the rear window data, identify the rising edge or falling edge of the signal, and extract single bits according to the time window; The data is concatenated in a loop until all the data is processed, and finally valid Frame data in Byte units is formed; After parsing the command word and checking the check value, the digital electronic detonator executes each command action according to the command word; The application layer performs logical processing on the received current data and completes the short circuit detection, open circuit detection and leakage detection of the BUS according to different current thresholds.

[0014] A fourth aspect provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following steps are implemented: The sampled voltage at both ends of the sampling resistor is amplified by an analog-to-digital converter, wherein the current is sampled at a time of 2.5us and the sampled data is stored in an array; Eliminate abnormal data on the BUS; Scan the entire data, compare the trends of the front window data and the rear window data, identify the rising edge or falling edge of the signal, and extract single bits according to the time window; The data is concatenated in a loop until all the data is processed, and finally valid Frame data in Byte units is formed; After parsing the command word and checking the check value, the digital electronic detonator executes each command action according to the command word; The application layer performs logical processing on the received current data and completes the short circuit detection, open circuit detection and leakage detection of the BUS according to different current thresholds.

[0015] The above-mentioned present application provides a digital electronic detonator initiator with high-side current detection, including: a control unit and a BUS protection unit, the BUS protection unit is electrically connected to the control unit, the control unit is used to handle the coordination work and business logic of each peripheral unit; the BUS protection unit is used for anti-interference processing during communication between the initiator and the digital electronic detonator; the BUS protection unit includes: a current detection circuit, the current detection current is connected to the power rail end of the power supply, and the current detection circuit is used for short circuit detection, open circuit detection, leakage detection and load network status detection of the digital electronic detonator network. The present application uses high-side current detection technology based on a small current sampling circuit, combined with a high-precision ADC to place the sampling resistor for small current sampling between the power supply and the load detonator network. The circuit structure greatly reduces the interference from the ground wire and improves the communication reliability between the initiator and the digital electronic detonator network. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the internal structure of a digital electronic detonator initiator with low-side current detection in the technical background; Figure 2 It is a schematic diagram of the internal structure of a digital electronic detonator initiator with high edge detection current in one embodiment; Figure 3 It is a detonation block diagram of a digital electronic detonator initiator with high edge current detection in one embodiment; Figure 4 A schematic diagram of a current detection circuit of a digital electronic detonator initiator with high-side current detection in one embodiment; Figure 5 FIG. 4 is a diagram showing the internal structure of a microcontroller unit in one embodiment. DETAILED DESCRIPTION

[0018] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all couplings of one or more related listed items.

[0020] It can be understood that the terms "first", "second", etc. used in the present application can be used in this article to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0021] The industry uses low-side current detection in digital electronic detonator initiators. Since the single-shot power consumption of digital electronic detonators is not high and the current during communication is relatively small, it belongs to micro-current detection. Low-side current detection is suitable for application scenarios with large load currents. Low-side detection technology is not very suitable for initiators. This application innovatively uses high-side current detection technology inside the digital electronic detonator initiator. Based on a small current sampling circuit, it combines a high-precision ADC and model characteristics based on the network communication between the initiator and the digital electronic detonator to complete the parsing and decoding of the digital electronic detonator uplink communication. The communication voltage between the digital electronic detonator initiator and the detonator is mostly between 7V and 10V, and the voltage for charging the detonator network is mostly between 18V and 24V. The amplifier selected by the high-side current detection circuit supports high common-mode voltage input, up to 40V, which fully meets the application needs.

[0022] like Figure 2-Figure 4 As shown, in this embodiment, a high-side current-sensing digital electronic detonator initiator includes: a control unit and a BUS protection unit, the BUS protection unit is electrically connected to the control unit, the control unit is used to process the coordinated work and business logic of each peripheral unit; the BUS protection unit is used for anti-interference processing during communication between the initiator and the digital electronic detonator; the BUS protection unit includes: a current sensing circuit, the current sensing current is connected to the power rail end of the power supply, and the current sensing circuit is used for short circuit detection, open circuit detection, leakage detection and load network status detection of the digital electronic detonator network.

[0023] Specifically, a high-side current-detecting digital electronic detonator initiator is used to realize the communication between the initiator and the digital electronic detonator network. It is the most basic and important component of the digital electronic detonator initiation system, and completes the functions of detonator network detection, bus current detection, short circuit detection, open circuit detection, leakage detection, detonator network charging and initiation, etc. Among them, the high-side current-detecting circuit is applied to the BUS receiving unit and the BUS protection unit. Specifically, the BUS protection unit is used for anti-interference processing during communication between the detonator and the digital electronic detonator to ensure the reliability and anti-interference capability of the communication. The high-side current detection circuit is also part of the BUS protection unit. Combined with the high-precision ADC, it can monitor the bus current in real time, thereby realizing the short circuit detection, open circuit detection, leakage detection, load network status detection and other functions of the detonator network. The BUS sending unit is used to realize data communication and command control between the detonator and the digital electronic detonator. It is based on the improved H-bridge circuit and sends and transmits digital signals in the form of differential signals. The BUS receiving unit is based on the high-side current detection circuit, combined with the high-precision ADC, and based on the model characteristics of the network communication between the detonator and the digital electronic detonator, a self-developed analysis algorithm is used to complete the analysis and decoding of the digital electronic detonator uplink communication.

[0024] It should be noted that the Beidou positioning unit is a domestically produced BD module. Optionally, the positioning unit may also use a GPS module.

[0025] In one embodiment, the current detection circuit includes: a CPU unit, the CPU unit is connected to the control unit, and the CPU unit controls the current detection circuit; an analog-to-digital converter, the first end of the analog-to-digital converter is connected to the CPU unit, and the analog-to-digital converter is used to convert an analog signal into a digital signal; a high-side current detection amplifier, the first end of the high-side current detection amplifier is connected to the second end of the analog-to-digital converter, and the second and third ends of the high-side current detection amplifier are connected to a digital electronic detonator; the second and third ends of the high-side current detection amplifier are connected to a diode and a transient voltage suppression diode both provided with electrostatic protection; a first resistor, the first end of the first resistor is connected to the second end of the analog-to-digital converter, and the second end of the first resistor is connected to the high-side current detection amplifier; a second resistor, the first end of the second resistor is connected to the high-side current detection amplifier, and the second end of the second resistor is connected to the transient voltage suppression diode.

[0026] Specifically, the current sampling circuit of the current detection circuit is placed on the power rail inside the initiator of the detonation system. The core component of the high-side current detection circuit, the high-side current detection operational amplifier, is required to be able to withstand the power supply voltage, that is, the maximum common-mode input voltage must be greater than the power supply voltage. In order to improve the sampling accuracy of small currents in the uplink communication of digital electronic detonators, the reference benchmark accuracy of the high-side current detection circuit is required to be high. Similarly, the use of high-precision, high-resolution ADC, high-precision sampling resistors and other measures are beneficial to improving the sampling accuracy of small currents in uplink communications.

[0027] In order to achieve real-time analysis of uplink communication and real-time monitoring of load network bus current in parallel, a dual-channel high-side detection circuit is used, which can also detect abnormal conditions such as short circuit, open circuit, leakage, fluctuation, overshoot, drop, etc. of the BUS. In order to improve the sampling speed and response speed, high-speed MCU, high-speed clock, high-speed ADC, etc. can be used to improve the sampling speed, providing a good foundation for capturing the state of the BUS and data analysis. Based on the model characteristics of the network communication between the initiator and the digital electronic detonator, the self-developed analysis algorithm completes the analysis and decoding of the uplink communication of the digital electronic detonator.

[0028] In one embodiment, the analog-to-digital converter reference has a fixed output of 4.096V with an accuracy of up to ±0.1% and a temperature stability of up to 8ppm / °C. The high-side current-sense op amp can automatically zero the front end to obtain Vos and has an ultra-low offset voltage Vos of 25µV maximum; the current sense input common-mode voltage range is +1.9V to +28V. The high-side current-sense op amp can continuously measure and eliminate the input offset voltage, eliminating drift caused by time, temperature and 1 / f noise effects.

[0029] Specifically, a high-side current-detecting digital electronic detonator initiator uses an ADC high-precision reference source ADR3340, which is a small-sized, high-precision reference suitable for high-side current-detecting circuits. Its reference fixed output is 4.096V, with an accuracy of up to ±0.1%, and a temperature stability of up to 8ppm / °C. The amplifier uses the MAX9922 ultra-high-precision, high-side current detection amplifier, which supports automatic zeroing of the front end to obtain Vos and has a maximum ultra-low offset voltage Vos of 25µV. +1.9V to +28V current detection input common-mode voltage range. The MAX9922's spread spectrum auto-zero technology can continuously measure and eliminate input offset voltages, eliminating drift caused by time, temperature, and 1 / f noise effects. The combination of low Vos and high gain accuracy, and a large common-mode input voltage, is very conducive to accurate current measurement with a small detection voltage. It is very suitable for decoding and parsing uplink communications between initiators and digital electronic detonators, and is also very suitable for current detection in BUS networks.

[0030] In one of the embodiments, a high-side detection digital electronic detonator initiator also includes: a storage unit for obtaining registration information, logs and control record information of the digital electronic detonator; a power supply unit for providing working power to the initiator, and a built-in lithium battery power monitoring and charging management; a positioning unit for obtaining the location information of the initiator; a power on / off management unit for processing the power on / off action of the initiator; a detonation button unit for executing the sending of a detonation instruction, thereby detonating the digital electronic detonator; and a Bluetooth communication unit for the initiator to interact with a mobile phone application APP for business data.

[0031] Specifically, the digital electronic detonator initiator device based on the current detection circuit and high-side current detection technology includes: a control unit, which is used to handle the coordinated work and business logic of various peripheral units. A storage unit, which is used to obtain the detonator registration information, logs, control records and other information. A power supply unit, which is used to provide working power to the initiator device, and the power monitoring and charging management of the built-in lithium battery. A positioning unit, which is used to obtain the location information of the initiator. A power on / off management unit, which is used to process the power on / off action of the initiator. A detonation button unit, which is used to execute the sending of the detonation command, and then detonate the digital electronic detonator. A Bluetooth communication unit, which is used for the initiator to interact with the mobile phone application APP for business data.

[0032] In the present embodiment, a detonation method of a high-side current-detection digital electronic detonator initiator includes: amplifying the sampled voltage across the sampling resistor through an analog-to-digital converter, wherein the current sampling is performed at a time of 2.5us, and the sampled data is stored in an array; removing abnormal data on the BUS bus; scanning the entire data, performing trend comparison on the front window data and the rear window data, identifying the rising edge or falling edge of the signal, and performing single-bit extraction according to the time window; splicing the data cyclically until all the data is processed, and finally forming valid Frame data in bytes; parsing according to the command word, and after checking the check value, the digital electronic detonator executes each instruction action according to the command word; the application layer performs logical processing on the received current data, and completes the short circuit detection, open circuit detection and leakage detection of the BUS bus according to different current thresholds.

[0033] In one of the embodiments, the abnormal data on the BUS is eliminated, including: eliminating the abnormal values ​​with higher or lower amplitudes; eliminating the burr data with amplitudes higher than normal values ​​but discontinuous in one bit; smoothing the overshoot data with amplitudes higher than normal values ​​in one bit, and averaging the depression data below normal values.

[0034] Specifically, the ADC analog-to-digital conversion chip AD7865 is initialized, as well as the corresponding GPIO of the MCU, the built-in timer of the MCU, etc., and the working status of related hardware peripherals is configured.

[0035] The ADC starts analog-to-digital conversion, amplifies the sampled voltage across the sampling resistor, samples the current at 2.5us, and stores the sampled data in an array.

[0036] During the sampling process of the data on the BUS, the BUS is affected by the construction environment. In some cases, abnormal values ​​with high or low amplitudes may be collected. These are abnormal data and will be eliminated.

[0037] By analyzing the data collected on the BUS, it can be observed that there is glitch data with an amplitude higher than the normal value but discontinuous in one bit. This is abnormal data and is removed.

[0038] By analyzing the data collected on the BUS, it can be observed that there is data with no obvious trend in 1 bit. Overshoot data with higher than normal amplitude is smoothed, and concave data with lower than normal value is averaged and compensated. Scan the entire data, compare the trends of the front window data and the rear window data, identify the rising edge or falling edge of the signal, extract single bits according to the time window, and then splice the data in a loop until all the data is processed, and finally form valid Frame data in Byte units. Finally, parse according to the command word, and after checking the check value, the digital electronic detonator executes each instruction action according to the command word.

[0039] Initialize the ADC analog-to-digital conversion chip AD7865, the corresponding GPIO initialization of the MCU, the initialization of the MCU built-in timer, etc., and configure the working status of related hardware peripherals.

[0040] The ADC starts analog-to-digital conversion, amplifies the sampled voltage across the sampling resistor, samples the current at 2.5us, and stores the sampled data in an array.

[0041] The MCU reports processing data to the application layer at 10ms intervals, and transmits current data to the host computer of the application layer in real time at 1ms intervals.

[0042] Real-time current processing: The application layer performs logical processing on the received current data and completes the short circuit detection, open circuit detection, and leakage detection of the BUS according to different current thresholds. In the case of short circuit and power failure, not only a pop-up window prompt is given, but also the actuator of the detonator content is directly driven to cut off the BUS protection breaker to ensure construction safety. In the case of leakage, the application software gives a pop-up window prompt to the customer.

[0043] In one embodiment, a micro control unit is provided, which may be a server, and its internal structure diagram may be as follows: Figure 5As shown. The micro control unit includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the micro control unit is used to provide computing and control capabilities. The memory of the micro control unit includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a program and a database. The internal memory provides an environment for the operation of the operating system and the program in the non-volatile storage medium. The database of the micro control unit is used to store periodic task allocation data, such as configuration files, theoretical operating parameters and theoretical deviation value ranges, task attribute information, etc. The network interface of the micro control unit is used to communicate with an external terminal through a network connection. When the program is executed by the processor, a detonator registration and backup system is implemented.

[0044] Those skilled in the art can understand that Figure 5 The structure shown in the figure is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the microcontroller unit to which the scheme of the present application is applied. The specific microcontroller unit may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0045] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented: The sampled voltage at both ends of the sampling resistor is amplified by an analog-to-digital converter, wherein the current is sampled at a time of 2.5us and the sampled data is stored in an array; Eliminate abnormal data on the BUS; Scan the entire data, compare the trends of the front window data and the rear window data, identify the rising edge or falling edge of the signal, and extract single bits according to the time window; The data is concatenated in a loop until all the data is processed, and finally valid Frame data in Byte units is formed; After parsing the command word and checking the check value, the digital electronic detonator executes each command action according to the command word; The application layer performs logical processing on the received current data and completes the short circuit detection, open circuit detection and leakage detection of the BUS according to different current thresholds.

[0046] In one embodiment, when the processor executes the computer program, the abnormal data on the BUS is removed, including: Eliminate the abnormal values ​​with higher or lower amplitudes; Eliminate the glitch data that is observed to have an amplitude higher than the normal value but is not continuous in one bit; It can be observed that there is no obvious trend in the data of 1 bit, the overshoot data with higher than normal amplitude is smoothed, and the concave data with lower than normal value is averaged and compensated.

[0047] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented: The sampled voltage at both ends of the sampling resistor is amplified by an analog-to-digital converter, wherein the current is sampled at a time of 2.5us and the sampled data is stored in an array; Eliminate abnormal data on the BUS; Scan the entire data, compare the trends of the front window data and the rear window data, identify the rising edge or falling edge of the signal, and extract single bits according to the time window; The data is concatenated in a loop until all the data is processed, and finally valid Frame data in Byte units is formed; After parsing the command word and checking the check value, the digital electronic detonator executes each command action according to the command word; The application layer performs logical processing on the received current data and completes the short circuit detection, open circuit detection and leakage detection of the BUS according to different current thresholds.

[0048] In one embodiment, when the computer program is executed by the processor, the abnormal data on the BUS is removed, including: Eliminate the abnormal values ​​with higher or lower amplitudes; Eliminate the glitch data that is observed to have an amplitude higher than the normal value but is not continuous in one bit; It can be observed that there is no obvious trend in the data of 1 bit, the overshoot data with higher than normal amplitude is smoothed, and the concave data with lower than normal value is averaged and compensated.

[0049] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0050] The various embodiments in the present disclosure are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0051] The protection scope of the present disclosure is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the scope and spirit of the present disclosure. If these changes and modifications fall within the scope of the claims of the present disclosure and their equivalents, the intention of the present disclosure also includes these changes and modifications.

Claims

1. A digital electronic detonator initiator with high edge current detection, characterized in that: include: A control unit and a BUS protection unit, wherein the BUS protection unit is electrically connected to the control unit, and the control unit is used to process the coordination work and business logic of each peripheral unit; The BUS protection unit is used for anti-interference processing during communication between the initiator and the digital electronic detonator; The BUS protection unit comprises: a current detection circuit, the current detection current is connected to the power rail end of the power supply, and the current detection circuit is used for short circuit detection, open circuit detection, leakage detection and load network status detection of the digital electronic detonator network.

2. A digital electronic detonator with high edge detection current according to claim 1, characterized in that: The current detection circuit comprises: A CPU unit, the CPU unit is connected to the control unit, and the CPU unit controls the current detection circuit; an analog-to-digital converter, wherein a first end of the analog-to-digital converter is connected to the CPU unit, and the analog-to-digital converter is used to convert an analog signal into a digital signal; A high-side current-sensing amplifier, wherein a first end of the high-side current-sensing amplifier is connected to a second end of the analog-to-digital converter, and a second end and a third end of the high-side current-sensing amplifier are connected to the digital electronic detonator; The second end and the third end of the high-side current-sense amplifier are connected to a diode and a transient voltage suppression diode both provided with electrostatic protection; A first resistor, wherein a first end of the first resistor is connected to a second end of the analog-to-digital converter, and a second end of the first resistor is connected to the high-side current-sense amplifier; A second resistor, wherein a first end of the second resistor is connected to the high-side current-sense amplifier, and a second end of the second resistor is connected to the transient voltage suppression diode.

3. A high-edge current detection digital electronic detonator initiator according to claim 2, characterized in that: The analog-to-digital converter reference has a fixed output of 4.096V with an accuracy of up to ±0.1% and a temperature stability of up to 8ppm / °C.

4. A digital electronic detonator with high edge current detection according to claim 2, characterized in that: The high-side current-sense amplifier can automatically zero the front end to obtain Vos and has an ultra-low offset voltage Vos of 25µV at maximum; the current detection input common-mode voltage range is +1.9V to +28V.

5. A digital electronic detonator with high edge detection current according to claim 2, characterized in that: The high-side current-sense op amp continuously measures and cancels out input offset voltage, eliminating drift due to time, temperature, and 1 / f noise effects.

6. A digital electronic detonator initiator with high edge detection current according to claim 1, characterized in that: Also includes: A storage unit, used for acquiring registration information, log and control record information of the digital electronic detonator; A power supply unit, used to provide working power to the detonator, and to monitor the power level and charge management of the built-in lithium battery; A positioning unit, used to obtain the position information of the detonator; A power on / off management unit, used for processing the power on / off action of the detonator; A detonation button unit, used to execute the sending of a detonation instruction, thereby detonating the digital electronic detonator; The Bluetooth communication unit is used for the detonator to interact with the mobile phone application APP for business data.

7. A method for detonating a digital electronic detonator initiator with high edge current detection, characterized in that: include: The sampled voltage at both ends of the sampling resistor is amplified by an analog-to-digital converter, wherein the current is sampled at a time of 2.5us and the sampled data is stored in an array; Eliminate abnormal data on the BUS; Scan the entire data, compare the trends of the front window data and the rear window data, identify the rising edge or falling edge of the signal, and extract single bits according to the time window; The data is concatenated in a loop until all the data is processed, and finally valid Frame data in Byte units is formed; After parsing the command word and checking the check value, the digital electronic detonator executes each command action according to the command word; The application layer performs logical processing on the received current data and completes the short circuit detection, open circuit detection and leakage detection of the BUS according to different current thresholds.

8. The detonation method of a high-edge current detection digital electronic detonator initiator according to claim 4 is characterized in that: The step of removing abnormal data on the BUS includes: Eliminate the abnormal values ​​with higher or lower amplitudes; Eliminate the glitch data that is observed to have an amplitude higher than the normal value but is not continuous in one bit; It can be observed that there is no obvious trend in the data of 1 bit, the overshoot data with higher than normal amplitude is smoothed, and the concave data with lower than normal value is averaged and compensated.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method of claim 7 or 8 are implemented.

10. A computer storage medium having a computer program stored thereon, characterized in that: The computer program implements the steps of the method of claim 7 or 8 when executed by a processor.

Images