A remote detonation system for electronic detonators and control method thereof

Abstract

The present invention relates to the technical field of electronic detonators, and in particular to a remote detonation system of electronic detonators and a control method thereof. In the system, a remote control module and a signal conversion module are connected by cellular network communication, and a local wireless network communication is used between the signal conversion module and a plurality of detonation control modules. The plurality of detonation control modules are respectively connected by wire with each group of electronic detonators. The remote control module is used to generate a detonation instruction and transmit the detonation instruction to the signal conversion module; the signal conversion module is used to realize the conversion between the cellular signal and the local wireless signal, and forward the detonation instruction to the detonation control module; the detonation control module is used to verify the detonation instruction, and control the detonation of the electronic detonator based on the verified detonation instruction, which guarantees the requirements of the electronic detonator blasting for clock accuracy to a certain extent, and realizes the real "remote control" and the unified control of the overall blasting of the entire blasting range.

Description

Technical Field

[0001] The invention relates to the technical field of electronic detonators, and in particular to a remote detonation system of an electronic detonator and a control method thereof. Background Art

[0002] Electronic detonators are high-tech detonators that use electronic delay technology to achieve precise control of the detonation time. The main working principle of electronic detonators is: after receiving the authorized detonation command after the delay time is preset, the control chip in the electronic detonator opens the detonation control circuit, and the ignition element obtains energy and generates heat to ignite the agent, thereby detonating the electronic detonator.

[0003] Traditional electronic detonators are usually connected to the detonation controller by wired connection, which can accurately control the detonation process. However, since the application scenario of electronic detonators, that is, the construction site where blasting is required, is usually complex in terrain and harsh in environment, the wired connection method brings great challenges and difficulties to the construction of the blasting site.

[0004] For this reason, wireless detonation systems came into being. In the prior art, wireless detonation systems are usually composed of multiple wireless detonation controllers. The combination of multiple wireless detonation controllers usually adopts a cascade mode of detonation controllers or realizes long-distance communication transmission through relays. However, the existing wireless detonation systems still inevitably have the following technical problems:

[0005] 1. Under the existing wireless detonation system, the main body controlling the detonation of electronic detonators is still the detonation controller (such as Chinese patent CN117704907A, a wireless electronic detonator detonation control method and system), and the detonation controller must be in the registered blasting area to operate when controlling the detonation of electronic detonators. If it is not in the blasting area, the control of the electronic detonator detonation function cannot be realized, and it is difficult to achieve true "remote control".

[0006] 2. In the actual blasting environment, most of the existing wireless detonation systems using the cascade mode of the detonation controller need to use a wireless detonation controller to simultaneously detonate electronic detonators in multiple areas. However, on the one hand, this is due to the communication distance limitation of the wireless communication equipment, and on the other hand, it is due to the maximum number of electronic detonators that can be connected to the detonation controller. In addition, the detonation controller is generally connected to the electronic detonator by wire. The longer the communication line distance, the worse the signal transmission effect, which may cause unstable detonation signals and increase the risk of false explosion or explosion rejection. Therefore, the wireless detonation systems in the prior art are all controlled by a wireless detonation controller to control the electronic detonators in a fixed area (such as Chinese patent CN115727725A, an electronic detonator detonation control system and its detonation control method), and it is impossible to achieve overall blasting control of the entire blasting range by a wireless detonation controller, which makes it difficult to achieve accurate synchronization of blasting in different areas, affecting the blasting effect.

[0007] 3. The existing wireless detonation system that realizes long-distance communication transmission through relay (such as Chinese patent CN106610253A, an electronic detonator detonation system and control method through relay communication) will cause the problem of data transmission delay to become more serious as the communication distance increases and the number of relay hops increases, making it difficult to meet the requirements of electronic detonator blasting for clock accuracy. Summary of the invention

[0008] To this end, the present invention proposes a remote detonation system for an electronic detonator and a control method thereof, aiming to at least partially solve the above technical problems.

[0009] In a first aspect, the present application provides a remote detonation system for electronic detonators, comprising a remote control module, a signal conversion module, a plurality of detonation control modules, and a plurality of groups of electronic detonators, wherein the remote control module and the signal conversion module are connected by cellular network communication, the signal conversion module and the plurality of detonation control modules are connected by local wireless network communication, and the plurality of detonation control modules are connected by wire to each group of electronic detonators, respectively.

[0010] The remote control module is used to generate a detonation instruction and transmit the detonation instruction to the signal conversion module;

[0011] The signal conversion module is used to realize the conversion between cellular signals and local wireless signals, and forward the detonation instruction to the detonation control module;

[0012] The detonation control module is used to verify the detonation instruction and control the detonation of the electronic detonator based on the verified detonation instruction.

[0013] In some embodiments, the detonation control module is a detonation control device with WIFI function, and the detonation control device with WIFI function includes:

[0014] A WIFI communication unit is connected to the signal conversion module for realizing WIFI communication with the signal conversion module;

[0015] A network quality detection unit, used to detect the quality of WIFI communication;

[0016] Clock calibration unit, used to calibrate the clock of the detonation control equipment with WIFI function;

[0017] A delay checking unit, used to check whether the delay set in the electronic detonator is the same as the delay set in the detonation control device with WIFI function and the remote control module;

[0018] A data verification unit, used to verify the correctness of the detonation instruction;

[0019] A detonator control unit, used to control the opening of the charging unit based on the verified detonation instruction;

[0020] The charging unit is connected to the electronic detonator and is used to charge the electronic detonator to reach the detonation voltage of the electronic detonator.

[0021] In some embodiments, the detonation control module is a detonation control device with Bluetooth function, and the detonation control device with Bluetooth function includes:

[0022] A Bluetooth communication unit, connected to the signal conversion module for realizing Bluetooth communication with the signal conversion module;

[0023] A clock calibration unit, used to calibrate the clock of a detonation control device with Bluetooth function;

[0024] A delay checking unit, used to check whether the delay set in the electronic detonator is the same as the delay set in the detonation control device with Bluetooth function and the remote control module;

[0025] A data verification unit, used to verify the correctness of the detonation instruction;

[0026] A detonator control unit, used to control the opening of the charging unit based on the verified detonation instruction;

[0027] The charging unit is connected to the electronic detonator and is used to charge the electronic detonator to reach the detonation voltage of the electronic detonator.

[0028] In a second aspect, the present application provides a control method for a remote detonation system of an electronic detonator, comprising the following steps:

[0029] Step 102, dividing the blasting area into a plurality of sub-areas, and deploying a group of electronic detonators in each sub-area;

[0030] Step 104, the remote control module generates a detonation instruction and transmits the detonation instruction to the signal conversion module;

[0031] Step 106, the signal conversion module converts the cellular signal into a local wireless signal and forwards the detonation instruction to the detonation control module;

[0032] Step 108, the detonation control module verifies the detonation instruction;

[0033] Step 110: The detonation control module controls the electronic detonator to detonate based on the verified detonation instruction.

[0034] In some embodiments, in step 104, the remote control module generates a detonation instruction, including:

[0035] Step 202, the clock calibration unit calibrates the clock of the detonation control module with the clock of the remote control module, and calibrates the clock of the corresponding connected electronic detonator with the calibrated clock of the detonation control module;

[0036] In step 204, the delay checking unit determines whether the delay set for the corresponding connected electronic detonator matches the delay set in the detonation control module and the delay set in the remote control module. If they match, the remote control module generates a detonation instruction. If they do not match, the delay of the electronic detonator is reset and step 204 is executed again.

[0037] In some embodiments, in step 202, calibrating the clock of the corresponding connected electronic detonator with the calibrated clock of the detonation control module includes:

[0038] Based on the calibrated clock of the detonation control module, the detonation control module sends a number of timing waveforms to the corresponding connected electronic detonators;

[0039] The corresponding connected electronic detonators compare the internal clock waveform with the timing waveform sent by the detonation control module to obtain the delay ratio between the internal clock of each electronic detonator and the clock of the detonation control module;

[0040] Based on the delay ratio and the delay set in the detonation control module, the delay that the corresponding connected electronic detonator should match is calculated.

[0041] In some embodiments, if the detonation control module is a detonation control device with a WIFI function, before step 202, the following steps are included:

[0042] The network quality detection unit detects the WIFI communication quality between the remote control module. If the detection result is that the communication quality is qualified, step 202 is executed. If the detection result is that the communication quality is unqualified, the WIFI communication quality between the remote control module is detected again. When the communication quality is unqualified for several consecutive detection results, the WIFI communication unit is restarted.

[0043] In some embodiments, the network quality detection unit detects the WIFI communication quality between the remote control module and the remote control module, including:

[0044] The remote control module generates quality detection data and sends the quality detection data to the WIFI communication unit via the signal conversion module;

[0045] The WIFI communication unit forwards the received quality detection data to the network quality detection unit;

[0046] The network quality detection unit checks whether packet loss occurs in the received quality detection data and analyzes the speed at which the quality detection data is received. If packet loss does not occur and the speed at which the quality detection data is received is above a preset speed threshold, the detection result of the network quality detection unit is that the communication quality is qualified. If packet loss occurs or the speed at which the quality detection data is received is below the preset speed threshold, the detection result of the network quality detection unit is that the communication quality is unqualified.

[0047] In some embodiments, the blasting area includes an open environment and an obstacle environment, then after step 102 and before step 104, the following steps are further included:

[0048] If the blasting area is an open environment, then:

[0049] Determine the confluence point of the connecting lines of each group of electronic detonators as the origin of each group of electronic detonators;

[0050] Determine the geometric center between the origins of several groups of electronic detonators, and use the geometric center as the expected position of the detonation control module;

[0051] Get the communication distance of the detonation control module;

[0052] Draw a circle with the expected position of the detonation control module as the center and the communication distance of the detonation control module as the radius to obtain the controllable range of the detonation control module;

[0053] The expected position of the detonation control module is fine-tuned until the origins of several groups of electronic detonators can be simultaneously within the controllable range of the detonation control module, thereby obtaining the preferred position of the detonation control module.

[0054] In some embodiments, after step 102 and before step 104, the process further includes:

[0055] If the blasting area is an obstacle environment, then:

[0056] Determine the confluence point of the connecting lines of each group of electronic detonators as the origin of each group of electronic detonators;

[0057] Get the communication distance of the detonation control module;

[0058] A circle is drawn with the origin of each group of electronic detonators as the center and the communication distance of the detonation control module as the radius to obtain the reachable range of several groups of electronic detonators;

[0059] The overlapping part of the reachable range of several groups of electronic detonators is used as the preferred position of the detonation control module.

[0060] The beneficial technical effects of the present invention include at least:

[0061] 1. A remote detonation system and control method for electronic detonators are adopted, and a remote control module is creatively used as the main body for controlling the detonation of electronic detonators to generate a unified detonation instruction. The detonation instruction is stably and quickly transmitted over long distances through the cellular network communication connection between the remote control module and the signal conversion module, the conversion between the cellular signal and the local wireless signal by the signal conversion module, and the local wireless network communication connection between the signal conversion module and the detonation control module. Combined with the wired connection between the detonation control module and each group of electronic detonators, the technical problem that the detonation controller cannot control the detonation function of the electronic detonator when it is not in the blasting area is overcome. At the same time, there is only one level of routing between the detonation control module and the electronic detonator, so that each detonation control module can control the detonation of the electronic detonator based on a unified detonation instruction, and the communication time is shorter and the communication reliability is stronger, which effectively avoids the technical problem of serious data transmission delay caused by multi-level network transmission in the existing wireless detonation system that realizes long-distance communication transmission through relay, and guarantees the clock accuracy requirements of electronic detonator blasting to a certain extent, and realizes true "remote control" and unified control of the overall blasting of the entire blasting range;

[0062] 2. Before the detonation process, the clock calibration unit calibrates the clocks of the remote control module, the detonation control module and the corresponding electronic detonator. By comparing the timing waveform sent by the detonation control module with the internal clock waveform of the corresponding electronic detonator, the electronic detonator without internal network function can accurately calibrate its internal clock, which greatly improves the clock synchronization accuracy of the entire remote detonation system. Based on the obtained delay ratio and the delay set in the detonation control module, the delay that the corresponding electronic detonator should match is calculated to avoid the abnormal delay caused by the mismatch between the clock of the detonation control module and the internal clock of the electronic detonator, thereby ensuring that the detonation delay time set in the detonation control module is correctly reflected on the electronic detonator, thereby ensuring the accuracy of the detonation time of the remote detonation system.

[0063] 3. Through scientific calculation of the optimal position of the detonation control module in different environments, it is possible to realize the technical solution of unified control of multiple groups of electronic detonators by one detonation control module while ensuring communication reliability, whether in an open environment or an obstacle environment, thereby maximizing the savings in the number of detonation control modules required in the system and simplifying the deployment of blasting operations.

[0064] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] The present invention will be further described below in conjunction with the accompanying drawings:

[0066] Figure 1 The figure is a schematic diagram of the structure of a remote detonation system of an electronic detonator according to an embodiment of the present invention.

[0067] Figure 2 The present invention is a flowchart of a control method of a remote detonation system of an electronic detonator according to an embodiment of the present invention.

[0068] Figure 3 The figure is a schematic diagram of the calibration principle of the electronic detonator clock and the detonation control module clock according to an embodiment of the present invention. DETAILED DESCRIPTION

[0069] The technical solutions of the embodiments of the present invention are explained and described below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0070] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operate in a specific direction. Therefore, it should not be understood as a limitation of the present invention.

[0071] Please see attached Figure 1 , Figure 1 A schematic structural diagram of a remote detonation system for an electronic detonator provided in an embodiment of the present application.

[0072] like Figure 1 As shown, the remote detonation system of the electronic detonator may at least include a remote control module, a signal conversion module, several detonation control modules and several groups of electronic detonators.

[0073] The remote control module and the signal conversion module are connected by cellular network communication, the signal conversion module and several detonation control modules are connected by local wireless network communication, and several detonation control modules are connected to each group of electronic detonators by wire.

[0074] The remote control module is used to generate a detonation command and transmit the detonation command to the signal conversion module;

[0075] The signal conversion module is used to realize the conversion between cellular signals and local wireless signals, and forward the detonation command to the detonation control module;

[0076] The detonation control module is used to verify the detonation instruction and control the detonation of the electronic detonator based on the verified detonation instruction.

[0077] Optionally, the cellular network used between the remote control module and the signal conversion module may be one of the wireless long-distance communication technologies such as GPRS (General Packet Radio Service), 5G, 4G, CAT1 (Category 1), etc., and the local wireless network used between the signal conversion module and the detonation control module may be one of the wireless communication technologies such as Wi-Fi (Wireless Fidelity), Bluetooth, ZigBee, etc., which is not limited in this embodiment. Cellular networks usually have high signal stability and anti-interference capabilities to provide reliable communication connections.

[0078] In this embodiment, the remote control module has a network connection function, including but not limited to a server port, management software / system, mobile phone APP, etc. If the remote control module is a management software / system or a mobile phone APP, data needs to be forwarded through the server before it can be received by the signal conversion module.

[0079] In this embodiment, the signal conversion module is used to realize the conversion between cellular signals and local wireless signals, that is, to realize the conversion between the cellular network and the local wireless network, so as to realize the sending and receiving of long-distance signals between the remote control module and the detonation control module. It is understandable that the signal conversion module can be selected and used according to actual needs and application scenarios, including but not limited to baseband converters, radio frequency modems, wireless bridges, WiFi access points (APs), Bluetooth adapters, etc., as long as it can realize the effective conversion and transmission between cellular signals and local wireless signals, and this embodiment does not limit this.

[0080] It can be understood that the detonation control module has a wireless communication function. Optionally, the detonation control module in this embodiment can be a detonation controller with a WIFI function, or a detonation controller with a Bluetooth function, or a device with a detonation control function that can connect to a local external WIFI network. This embodiment does not limit this.

[0081] In this embodiment, the wired connection between the detonation control module and each group of electronic detonators is that one electronic detonator group is connected to one detonation control module, and the wired connection includes but is not limited to Ethernet cables, T1 / E1 lines, dedicated communication lines, etc.

[0082] In the existing wireless detonation system, the main body controlling the detonation of electronic detonators is still the detonation controller, and the detonation controller must be in the blasting area on record to operate when controlling the detonation of electronic detonators. If it is not in the blasting area, it cannot control the detonation function of the electronic detonator, and it is difficult to achieve true "remote control". For this reason, the existing technology improves the communication transmission distance of the wireless detonation controller to a certain extent by adding relays. However, the existing wireless detonation system that realizes long-distance communication transmission through relays, with the increase of communication distance and the increase of relay hops, leads to more and more serious data transmission delay problems, and it is difficult to meet the requirements of electronic detonator blasting for clock accuracy. At the same time, because the existing wireless detonation system using the cascade mode of the detonation controller can only control the electronic detonators in a fixed area with one wireless detonation controller in the actual blasting environment, it is impossible to achieve the overall blasting control of the entire blasting range by one wireless detonation controller, resulting in the difficulty of achieving accurate synchronization of blasting in different areas, affecting the blasting effect.

[0083] To this end, the present embodiment creatively designs a remote detonation system for electronic detonators, using a remote control module as the main body for controlling the detonation of electronic detonators to generate a unified detonation instruction, and realizes stable and rapid long-distance transmission of the detonation instruction through the cellular network communication connection between the remote control module and the signal conversion module, the conversion between the cellular signal and the local wireless signal by the signal conversion module, and the local wireless network communication connection between the signal conversion module and the detonation control module. Combined with the wired connection between the detonation control module and each group of electronic detonators, the technical problem that the detonation controller cannot realize the control of the detonation function of the electronic detonator when it is not in the blasting area is overcome. At the same time, there is only one level of routing between the detonation control module and the electronic detonator, so that each detonation control module can control the detonation of the electronic detonator based on the unified detonation instruction, and the communication time is shorter and the communication reliability is stronger, which effectively avoids the technical problem of serious data transmission delay caused by multi-level network transmission in the existing wireless detonation system that realizes long-distance communication transmission through relay, and to a certain extent guarantees the requirements of electronic detonator blasting for clock accuracy, and realizes true "remote control" and unified control of the overall blasting of the entire blasting range.

[0084] In one embodiment of the present specification, the detonation control module is a detonation control device with a WIFI function, and the detonation control device with a WIFI function may at least include:

[0085] A WIFI communication unit is connected to the signal conversion module for realizing WIFI communication with the signal conversion module;

[0086] A network quality detection unit, used to detect the quality of WIFI communication;

[0087] Clock calibration unit, used to calibrate the clock of the detonation control equipment with WIFI function;

[0088] A delay checking unit, used to check whether the delay set in the electronic detonator is the same as the delay set in the detonation control device with WIFI function and the remote control module;

[0089] A data verification unit, used to verify the correctness of the detonation instruction;

[0090] A detonator control unit, used to control the opening of the charging unit based on the verified detonation instruction;

[0091] The charging unit is connected to the electronic detonator and is used to charge the electronic detonator to reach the detonation voltage of the electronic detonator.

[0092] The clock calibration unit can calibrate the clock of the detonation control device with WIFI function through WIFI. The data verification unit verifies the correctness of the detonation instruction, that is, whether the engineering data attached to the calibration detonation instruction is the same as the engineering data stored locally. The engineering data includes but is not limited to the engineering name, the scope of the quasi-blasting area and the pipe code data. The pipe code data includes but is not limited to the UID code, internal code and password of the electronic detonator.

[0093] It can be understood that after the detonator control unit controls the charging unit to turn on based on the verified detonation instruction, the charging unit charges the electronic detonator, and the electronic detonator is detonated when the charging voltage reaches the detonation voltage of the electronic detonator.

[0094] On the other hand, in this embodiment, the detonation control module can also be a device with a detonation control function that can connect to a local external WIFI network. The device with a detonation control function that can connect to a local external WIFI network can at least include:

[0095] The network module is used to connect with the local external WIFI device. It can be understood that the local external WIFI device is connected to the signal conversion module for communication, so as to realize the WIFI communication between the detonation control module and the signal conversion module;

[0096] A network quality detection unit, used to detect the quality of WIFI communication;

[0097] Clock calibration unit, used to calibrate the clock of the detonation control equipment with WIFI function;

[0098] A delay checking unit, used to check whether the delay set in the electronic detonator is the same as the delay set in the detonation control device with WIFI function and the remote control module;

[0099] A data verification unit, used to verify the correctness of the detonation instruction;

[0100] A detonator control unit, used to control the opening of the charging unit based on the verified detonation instruction;

[0101] The charging unit is connected to the electronic detonator and is used to charge the electronic detonator to reach the detonation voltage of the electronic detonator.

[0102] The detonation control device with WIFI function proposed in this embodiment adopts WIFI communication, a high-speed and stable local wireless communication method, which can ensure that the delay of the detonation command issued by the remote control module is basically consistent to a certain extent, and is more suitable for blasting scenes such as mines with a large blasting range and high requirements for blasting delay. However, since the coverage of WIFI communication itself is large, it may be affected by some external factors, such as weather factors, terrain factors, etc. If the WIFI communication unit is used for data transmission without ensuring good communication quality, there may be risks such as data delay or data loss, causing detonation accidents. For this reason, in this embodiment, while setting the WIFI communication unit, a network quality detection unit is set to detect the quality of WIFI communication. Combined with the clock calibration unit, the delay check unit and the data verification unit, the requirements of the electronic detonator blasting for clock accuracy and detonation reliability are further guaranteed.

[0103] In one embodiment of the present specification, the detonation control module is a detonation control device with a Bluetooth function, and the detonation control device with a Bluetooth function may at least include:

[0104] A Bluetooth communication unit, connected to the signal conversion module for realizing Bluetooth communication with the signal conversion module;

[0105] A clock calibration unit, used to calibrate the clock of a detonation control device with Bluetooth function;

[0106] A delay checking unit, used to check whether the delay set in the electronic detonator is the same as the delay set in the detonation control device with Bluetooth function and the remote control module;

[0107] A data verification unit, used to verify the correctness of the detonation instruction;

[0108] A detonator control unit, used to control the opening of the charging unit based on the verified detonation instruction;

[0109] The charging unit is connected to the electronic detonator and is used to charge the electronic detonator to reach the detonation voltage of the electronic detonator.

[0110] Among them, the clock calibration unit, delay check unit, data verification unit, detonator control unit and charging unit in this embodiment are similar to the clock calibration unit, delay check unit, data verification unit, detonator control unit and charging unit in the detonation control device with WIFI function proposed in the previous embodiment, and this embodiment will not be repeated here.

[0111] Since the detonation control device with WIFI function proposed in the above embodiment has a technical problem of high power consumption, it is necessary to always pay attention to the power of the detonation control device with WIFI function, because when the power is low, the detonation control device cannot provide the electronic detonator with sufficient charging voltage to detonate the electronic detonator. For this reason, this embodiment proposes a detonation control device with Bluetooth function as a replacement solution for the detonation control module, which is more suitable for blasting scenarios where the overall range of the blasting area is small and the detonation control module needs to work continuously for a long time. Specifically, this embodiment preferably adopts Bluetooth wireless communication mode for the detonation control device, reduces the power consumption of the detonation control module, prolongs the use time of the detonation controller, and avoids the disadvantageous situation of sudden low power when the detonation control module is used in a blasting site without a charging place. At the same time, although the transmission rate of Bluetooth communication is not high and is not suitable for transmitting large files or high-quality audio or video, it is completely sufficient in application scenarios such as transmitting detonation files or detonation data. Moreover, due to the transmission distance of Bluetooth communication itself, the data transmission within the signal coverage range is relatively stable. Therefore, in this embodiment, a network quality detection unit is no longer set to test the communication quality, which simplifies the design of the detonation control module while ensuring the reliability of the detonation control.

[0112] Please refer to the attached Figure 2 , Figure 2 A flow chart of a control method for a remote detonation system of an electronic detonator provided in an embodiment of the present application.

[0113] like Figure 2 As shown, the control method of the remote detonation system of the electronic detonator may at least include the following steps:

[0114] Step 102, divide the blasting area into several sub-areas, and deploy a group of electronic detonators in each sub-area, so that the electronic detonator groups in different sub-areas cover the entire site to be blasted to form an electronic detonator network.

[0115] Step 104: The remote control module generates a detonation instruction and transmits the detonation instruction to the signal conversion module.

[0116] Specifically, in step 104, the remote control module generates a detonation instruction, including:

[0117] Step 202: The clock calibration unit calibrates the clock of the detonation control module with the clock of the remote control module, and calibrates the clock of the corresponding connected electronic detonator with the calibrated clock of the detonation control module.

[0118] For example, in this embodiment, the implementation method of calibrating the clock of the detonation control module with the clock of the remote control module can be: the remote control module sends the clock information to the clock calibration unit of the detonation control module via the signal conversion unit and the WIFI communication unit, and the clock calibration unit adjusts its own clock according to the received clock information to synchronize its own clock with the clock of the remote control module.

[0119] Although the detonation control module can calibrate its own clock by connecting to WIFI, Bluetooth or accessing a remote control module connected to the network to make its own clock consistent with the external clock (or standard clock), the electronic detonator does not have a network function and cannot be connected to the network to achieve clock calibration. Instead, it uses the built-in clock circuit for timing. Since the electronic detonator uses its own internal timing, there may be a certain degree of deviation from the external clock.

[0120] To this end, in this embodiment, the clock of the corresponding connected electronic detonator is calibrated with the clock of the calibrated detonation control module, including:

[0121] Based on the calibrated clock of the detonation control module, the detonation control module sends a number of timing waveforms to the corresponding connected electronic detonators;

[0122] The corresponding connected electronic detonators compare the internal clock waveform with the timing waveform sent by the detonation control module to obtain the delay ratio between the internal clock of each electronic detonator and the clock of the detonation control module;

[0123] Based on the delay ratio and the delay set in the detonation control module, it is calculated that the corresponding connected electronic detonator should match the set delay.

[0124] Specifically, the clock of the corresponding connected electronic detonator is calibrated with the clock of the calibrated detonation control module as follows:

[0125] First, based on the calibrated clock of the detonation control module, the detonation control module sends several timing waveforms to the corresponding connected electronic detonator. Figure 3 , Figure 3 The figure is a schematic diagram of the calibration principle of the electronic detonator clock and the calibrated detonation control module clock of this embodiment, which shows a timing waveform sent by the detonation control module to a corresponding electronic detonator and a clock waveform generated inside the electronic detonator;

[0126] Secondly, compare the timing waveform sent by the detonation control module with the clock waveform generated inside the electronic detonator. For example, assume that the time from the rising edge to the falling edge of the clock waveform inside the electronic detonator and the timing waveform of the detonation control module is 1ms. Start from the moment when a rising edge is generated in the clock waveform inside the electronic detonator, calculate the timing waveform sent by the detonation control module, and end when the clock waveform inside the electronic detonator generates a falling edge for the first time. Stop calculating the timing waveform sent by the detonation control module, and obtain the waveform range passed by the timing waveform of the detonation control module within a rising and falling edge of the clock waveform inside the electronic detonator, such as Figure 3 As shown, one rising and falling edge of the clock waveform inside the electronic detonator is equal to 1.25 rising and falling edges of the timing waveform of the detonation control module, that is, 1ms of the electronic detonator is equal to 1.25ms of the detonation control module, and the delay ratio between the clock inside the electronic detonator and the clock of the detonation control module is 1.25;

[0127] Finally, based on the delay ratio and the delay set in the detonation control module, the delay that the corresponding connected electronic detonator should match is calculated. Assuming that the delay set in the detonation control module is 5ms, the delay that the electronic detonator should match is calculated to be 5ms÷1.25=4ms based on the delay ratio of 1.25.

[0128] In this embodiment, before the detonation process is carried out, the clock calibration unit calibrates the clock of the remote control module, the clock of the detonation control module and the clock of the corresponding electronic detonator. By comparing the timing waveform sent by the detonation control module with the internal clock waveform of the corresponding electronic detonator, the electronic detonator without internal network function can be accurately calibrated to its internal clock, which greatly improves the clock synchronization accuracy of the entire remote detonation system. Based on the obtained delay ratio and the delay set in the detonation control module, the delay that the corresponding electronic detonator should match is calculated to avoid the abnormal delay caused by the mismatch between the clock of the detonation control module and the internal clock of the electronic detonator, thereby ensuring that the detonation delay time set in the detonation control module is correctly reflected on the electronic detonator, thereby ensuring the accuracy of the detonation time of the remote detonation system.

[0129] In step 204, the delay checking unit determines whether the delay set for the corresponding connected electronic detonator matches the delay set in the detonation control module and the delay set in the remote control module. If they match, the remote control module generates a detonation instruction. If they do not match, the delay of the electronic detonator is reset and step 204 is executed again.

[0130] For example, the delay check unit can determine whether the delay set for the electronic detonator matches the delay set in the detonation control module and the delay set in the remote control module by checking whether the delay set for the corresponding electronic detonator connected to the busbar is the same as the delay that the electronic detonator should match and that is calculated in the detonation control module.

[0131] It can be understood that the present embodiment adopts a delay check unit to perform a delay check. Only when the delay setting of the electronic detonators connected to each detonation control module is correct, the remote control unit will generate a detonation instruction to enter the detonation process, so as to achieve precise control of the blasting process, and ensure that each remotely controlled electronic detonator can be detonated in a predetermined order and time point, so as to achieve the expected blasting effect, and at the same time avoid accidental detonation caused by delay setting deviation, thereby improving the safety of the entire blasting operation to a certain extent.

[0132] Furthermore, the detonation instructions generated by the remote control module in this embodiment may include immediate instructions or timed instructions. In the case of timed instructions, the detonation time needs to be set in advance on the remote control module. If any of the clock calibration unit, delay check unit, and data verification unit of the detonation control module reports an abnormal problem, an alarm will be issued on the remote control module, warning whether to continue the timed detonation.

[0133] Step 106: The signal conversion module converts the cellular signal into a local wireless signal and forwards the detonation instruction to the detonation control module.

[0134] It can be understood that in this embodiment, the signal conversion module can be selected for use according to actual needs and application scenarios, including but not limited to baseband converters, RF modems, wireless bridges, WiFi access points (APs), Bluetooth adapters, etc., as long as it can achieve effective conversion and transmission between cellular signals and local wireless signals. This embodiment does not limit this.

[0135] Step 108: The detonation control module verifies the detonation instruction.

[0136] Among them, the detonation control module verifies the detonation instruction, that is, calibrates whether the engineering data attached to the detonation instruction is the same as the engineering data stored locally. The engineering data includes but is not limited to the project name, the scope of the quasi-blasting area and the tube code data. The tube code data includes but is not limited to the UID code, internal code and password of the electronic detonator.

[0137] Step 110: The detonation control module controls the electronic detonator to detonate based on the verified detonation instruction.

[0138] Specifically, the detonation control module verifies the detonation instruction and obtains a verification result. If the verification result is correct, the detonation voltage is output to the corresponding connected electronic detonator based on the detonation instruction to control the detonation of the electronic detonator. If the verification result is wrong, the error is prompted on the detonation control module, and a request is sent to the remote control module to reselect the detonation project.

[0139] Furthermore, after step 110, the method may further include: the detonation control module generates a blasting record after the electronic detonator is detonated, and transmits the blasting record to the remote control module via the signal conversion module; the remote control module receives the detonation record and stores the blasting record locally.

[0140] In one embodiment of the present specification, if the detonation control module is a detonation control device with a WIFI function, before step 202, the following steps are included:

[0141] The network quality detection unit detects the WIFI communication quality between the remote control module. If the detection result is that the communication quality is qualified, step 202 is executed. If the detection result is that the communication quality is unqualified, the WIFI communication quality between the remote control module is detected again. When the communication quality is unqualified for several consecutive detection results, the WIFI communication unit is restarted.

[0142] Specifically, the network quality detection unit detects the WIFI communication quality between the remote control module and the remote control module, including:

[0143] The remote control module generates quality detection data and sends the quality detection data to the WIFI communication unit via the signal conversion module;

[0144] The WIFI communication unit forwards the received quality detection data to the network quality detection unit;

[0145] The network quality detection unit checks whether packet loss occurs in the received quality detection data and analyzes the speed at which the quality detection data is received. If packet loss does not occur and the speed at which the quality detection data is received is above a preset speed threshold, the detection result of the network quality detection unit is that the communication quality is qualified. If packet loss occurs or the speed at which the quality detection data is received is below the preset speed threshold, the detection result of the network quality detection unit is that the communication quality is unqualified.

[0146] It can be understood that in this embodiment, under the premise that no packet loss occurs, the faster the network quality detection unit receives the quality detection data, the better the communication quality is, and "above" includes the preset speed threshold number, and "below" does not include the preset speed threshold number.

[0147] Since WIFI communication itself has a large coverage range, it may be affected by some external factors, such as weather factors, terrain factors, etc. If the WIFI communication unit is not used for data transmission without ensuring good communication quality, there may be risks such as data delay or data loss, causing detonation accidents. For this reason, this embodiment detects the quality of WIFI communication through a network quality detection unit before clock calibration, delay inspection, and entering the detonation process, which helps to promptly discover possible communication quality problems of the detonation control equipment with WIFI function, ensure accurate and timely transmission of the detonation command, and thus ensure the clock accuracy and detonation reliability of the electronic detonator blasting.

[0148] In the aforementioned embodiment, the wired connection between the detonation control module and each group of electronic detonators is that one electronic detonator group is connected to one detonation control module, but it can be understood that, compared with multiple detonation control modules controlling the detonation of multiple groups of electronic detonators, the more groups of electronic detonators that can be controlled by one detonation control module based on a unified detonation instruction, the more reliable the control of the electronic detonator detonation by the detonation control module based on the unified detonation instruction can be ensured, while saving the number of detonation control modules required in the system and simplifying the deployment of blasting operations. To this end, in another embodiment of the present specification, a scientific calculation method for the preferred position of the detonation control module in different environments is proposed. Specifically, the blasting area includes an open environment and an obstacle environment, then after step 102 and before step 104, it can also include:

[0149] If the blasting area is an open environment, then:

[0150] Determine the confluence point of the connecting lines of each group of electronic detonators as the origin of each group of electronic detonators;

[0151] Determine the geometric center between the origins of several groups of electronic detonators, and use the geometric center as the expected position of the detonation control module;

[0152] Get the communication distance of the detonation control module;

[0153] Draw a circle with the expected position of the detonation control module as the center and the communication distance of the detonation control module as the radius to obtain the controllable range of the detonation control module;

[0154] The expected position of the detonation control module is fine-tuned until the origins of several groups of electronic detonators can be simultaneously within the controllable range of the detonation control module, thereby obtaining the optimal position of the detonation control module.

[0155] If the blasting area is an obstacle environment, then:

[0156] Determine the confluence point of the connecting lines of each group of electronic detonators as the origin of each group of electronic detonators;

[0157] Get the communication distance of the detonation control module;

[0158] A circle is drawn with the origin of each group of electronic detonators as the center and the communication distance of the detonation control module as the radius to obtain the reachable range of several groups of electronic detonators;

[0159] The overlapping part of the reachable range of several groups of electronic detonators is used as the preferred position of the detonation control module.

[0160] For example, taking the optimal setting of the position of the detonation control module between three groups of electronic detonators under different environments as an example, the implementation method of setting a detonation control module between the three groups of electronic detonators for unified control is:

[0161] First, since the electronic detonators in a group of electronic detonators are all connected by wires, the junction point of the connecting wires of several electronic detonators in each group is taken as the origin of the group of electronic detonators, and the origins of the three groups of electronic detonators are the origin r1 of the first group of electronic detonators, the origin r2 of the second group of electronic detonators, and the origin r3 of the third group of electronic detonators;

[0162] Then, perform the corresponding calculations based on the current environment:

[0163] 1. When the blasting area is an open environment:

[0164] Determine the geometric center s1 of the origins r1, r2, and r3 of the three groups of electronic detonators, and use the geometric center s1 as the expected position of the detonation control module;

[0165] Get the communication distance l of the detonation control module;

[0166] Draw a circle with the expected position s1 of the detonation control module as the center and the communication distance l of the detonation control module as the radius to obtain the controllable range of the detonation control module;

[0167] Fine-tune the expected position of the detonation control module, that is, the center of the circle s1, until r1, r2, and r3 can be in the circle at the same time, that is, the origins of the three groups of electronic detonators are in the controllable range of the detonation control module at the same time. At this time, the position s2 where the center of the circle is located is the preferred position of the detonation control module between the three groups of electronic detonators in an open environment.

[0168] (II) When the blasting area is an obstacle environment:

[0169] Get the communication distance l of the detonation control module;

[0170] Draw circles with the origins r1, r2, and r3 as the centers and the communication distance l of the detonation control module as the radius. The three circles obtained are the reachable ranges of the three groups of electronic detonators.

[0171] At this time, the range of the overlapping part of the three circles is the range of the preferred position of the detonation control module between the three groups of electronic detonators in the obstacle environment.

[0172] It can be understood that although the number of electronic detonators that can be uniformly controlled by the detonation controller in this embodiment is still limited by the maximum number of electronic detonators that can be connected to the detonation controller itself, through scientific calculation of the preferred position of the detonation control module in different environments, it is possible to achieve a technical solution in which one detonation control module uniformly controls multiple groups of electronic detonators while ensuring communication reliability in both open environments and obstacle environments, thereby maximizing the savings in the number of detonation control modules required in the system and simplifying the deployment of blasting operations.

[0173] The above description is only the preferred embodiment disclosed in this application and the description of the technical principle used. Those skilled in the art should understand that the scope of protection involved in this disclosure is not limited to the technical solution formed by a specific combination of the above technical features, but also should cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in this disclosure (but not limited to) to form a technical solution.

[0174] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

Claims

1. A control method for a remote detonation system of an electronic detonator, characterized in that: The remote detonation system of the electronic detonator includes a remote control module, a signal conversion module, a plurality of detonation control modules and a plurality of groups of electronic detonators. The remote control module and the signal conversion module are connected by cellular network communication, the signal conversion module and the plurality of detonation control modules are connected by local wireless network communication, and the plurality of detonation control modules are connected by wire to each group of electronic detonators. The control method of the remote detonation system of the electronic detonator comprises the following steps: Step 102, dividing the blasting area into a plurality of sub-areas, and deploying a group of electronic detonators in each sub-area; Step 104, the remote control module generates a detonation instruction and transmits the detonation instruction to the signal conversion module; Step 106, the signal conversion module converts the cellular signal into a local wireless signal and forwards the detonation instruction to the detonation control module; Step 108, the detonation control module verifies the detonation instruction; Step 110, the detonation control module controls the electronic detonator to detonate based on the verified detonation instruction; Wherein, the blasting area includes an open environment and an obstacle environment, then after step 102 and before step 104, the following steps are further included: If the blasting area is an open environment, then: Determine the confluence point of the connecting lines of each group of electronic detonators as the origin of each group of electronic detonators; Determine the geometric center between the origins of several groups of electronic detonators, and use the geometric center as the expected position of the detonation control module; Get the communication distance of the detonation control module; Draw a circle with the expected position of the detonation control module as the center and the communication distance of the detonation control module as the radius to obtain the controllable range of the detonation control module; Fine-tuning the expected position of the detonation control module until the origins of the plurality of groups of electronic detonators are simultaneously within the controllable range of the detonation control module, thereby obtaining the optimal position of the detonation control module; If the blasting area is an obstacle environment, then: Determine the confluence point of the connecting lines of each group of electronic detonators as the origin of each group of electronic detonators; Get the communication distance of the detonation control module; A circle is drawn with the origin of each group of electronic detonators as the center and the communication distance of the detonation control module as the radius to obtain the reachable range of several groups of electronic detonators; The overlapping part of the reachable range of several groups of electronic detonators is used as the preferred position of the detonation control module.

2. The control method of the remote detonation system of an electronic detonator according to claim 1, characterized in that: The detonation control module is a detonation control device with Bluetooth function, and the detonation control device with Bluetooth function includes: A Bluetooth communication unit, connected to the signal conversion module for realizing Bluetooth communication with the signal conversion module; A clock calibration unit, used to calibrate the clock of a detonation control device with Bluetooth function; A delay checking unit, used to check whether the delay set in the electronic detonator is the same as the delay set in the detonation control device with Bluetooth function and the remote control module; A data verification unit, used to verify the correctness of the detonation instruction; A detonator control unit, used to control the opening of the charging unit based on the verified detonation instruction; The charging unit is connected to the electronic detonator and is used to charge the electronic detonator to reach the detonation voltage of the electronic detonator.

3. The control method of the remote detonation system of an electronic detonator according to claim 1, characterized in that: The detonation control module is a detonation control device with WIFI function, and the detonation control device with WIFI function includes: A WIFI communication unit is connected to the signal conversion module for realizing WIFI communication with the signal conversion module; A network quality detection unit, used to detect the quality of WIFI communication; Clock calibration unit, used to calibrate the clock of the detonation control equipment with WIFI function; A delay checking unit, used to check whether the delay set in the electronic detonator is the same as the delay set in the detonation control device with WIFI function and the remote control module; A data verification unit, used to verify the correctness of the detonation instruction; A detonator control unit, used to control the opening of the charging unit based on the verified detonation instruction; The charging unit is connected to the electronic detonator and is used to charge the electronic detonator to reach the detonation voltage of the electronic detonator.

4. The control method of the remote detonation system of an electronic detonator according to any one of claims 2 or 3, characterized in that: In step 104, the remote control module generates a detonation instruction, including: Step 202, the clock calibration unit calibrates the clock of the detonation control module with the clock of the remote control module, and calibrates the clock of the corresponding connected electronic detonator with the calibrated clock of the detonation control module; In step 204, the delay checking unit determines whether the delay set for the corresponding connected electronic detonator matches the delay set in the detonation control module and the delay set in the remote control module. If they match, the remote control module generates a detonation instruction. If they do not match, the delay of the electronic detonator is reset and step 204 is executed again.

5. The control method of the remote detonation system of an electronic detonator according to claim 4, characterized in that: In step 202, the clock of the corresponding connected electronic detonator is calibrated with the clock of the calibrated detonation control module, including: Based on the calibrated clock of the detonation control module, the detonation control module sends a number of timing waveforms to the corresponding connected electronic detonators; The corresponding connected electronic detonators compare the internal clock waveform with the timing waveform sent by the detonation control module to obtain the delay ratio between the internal clock of each electronic detonator and the clock of the detonation control module; Based on the delay ratio and the delay set in the detonation control module, the delay that the corresponding connected electronic detonator should match is calculated.

6. The control method of the remote detonation system of an electronic detonator according to claim 4, characterized in that: If the detonation control module is a detonation control device with a WIFI function, before step 202, the following steps are included: The network quality detection unit detects the WIFI communication quality between the remote control module. If the detection result is that the communication quality is qualified, step 202 is executed. If the detection result is that the communication quality is unqualified, the WIFI communication quality between the remote control module is detected again. When the communication quality is unqualified for several consecutive detection results, the WIFI communication unit is restarted.

7. The control method of the remote detonation system of an electronic detonator according to claim 6, characterized in that: The network quality detection unit detects the WIFI communication quality between the remote control module and the remote control module, including: The remote control module generates quality detection data and sends the quality detection data to the WIFI communication unit via the signal conversion module; The WIFI communication unit forwards the received quality detection data to the network quality detection unit; The network quality detection unit checks whether packet loss occurs in the received quality detection data and analyzes the speed at which the quality detection data is received. If packet loss does not occur and the speed at which the quality detection data is received is above a preset speed threshold, the detection result of the network quality detection unit is that the communication quality is qualified. If packet loss occurs or the speed at which the quality detection data is received is below the preset speed threshold, the detection result of the network quality detection unit is that the communication quality is unqualified.

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