A portable pulse source excitation device

Abstract

This application provides a portable pulse source excitation device, comprising: a detonation module including a high-voltage capacitor module storing high-voltage electrical energy; a timing module including at least one of a GPS timing module and a BeiDou timing module; and a pulse source connected to both the high-voltage capacitor module and the timing module. Upon receiving a detonation command, the high-voltage capacitor module transmits the high-voltage electrical energy to the pulse source, which detonates to generate a trigger signal and transmits the trigger signal to the timing module. The timing module records the excitation time of the source based on the reception time of the trigger signal. The device provided by this invention solves the problems of low synchronization accuracy, low trigger reliability, low safety, and low ease of operation in current source excitation devices.

Description

Technical Field

[0001] This application relates to the field of seismic exploration technology, and in particular to a portable pulse source excitation device. Background Technology

[0002] As seismic exploration evolves towards higher resolution, massive nodalization, rapid deployment, and flexible operation, new equipment such as nodal seismographs and gas-blast sources are widely used in exploration fields. Compared to traditional geophones and large wired acquisition systems, nodal equipment offers advantages such as convenient deployment, controllable cost, and suitability for large-area deployment and complex terrain construction. Gas-blast sources, with their small size, concentrated energy, portability, and reusability, have become an important source form for onshore and near-shore shallow seismic exploration. Despite the rapid evolution of hardware platforms, source synchronizers and detonation systems still have a series of weaknesses that restrict the ability to conduct refined exploration, such as significant deficiencies in source triggering and time synchronization accuracy, triggering reliability, safety, and ease of operation. Utility Model Content

[0003] To address the aforementioned problems, one of the objectives of this utility model is to provide a portable pulse source excitation device to solve the problems of low synchronization accuracy, low triggering reliability, low safety, and low ease of operation of current source excitation devices.

[0004] To solve the above problems, this utility model is achieved through the following technology: A portable pulse source excitation device, comprising: The detonation module includes a high-voltage capacitor module, which stores high-voltage electrical energy; A timing module, including at least one of a GPS timing module and a BeiDou timing module; A pulse source is connected to the high-voltage capacitor module and the timing module, respectively. When a detonation command is received, the high-voltage capacitor module transmits the high-voltage electrical energy to the pulse source. The pulse source detonates to generate a trigger signal and transmits the trigger signal to the timing module. The timing module records the excitation time of the source based on the reception time of the trigger signal.

[0005] As one preferred embodiment, the pulse source includes a source charge, which includes an ignition head, an ignition wire, and a trigger wire, and is filled with an expanding agent; wherein, the ignition head is connected to the high-voltage capacitor module through the ignition wire, and the source charge is connected to the timing module through the trigger wire.

[0006] As one of the preferred embodiments, the timing module further includes a trigger module, which is connected to the seismic source propellant via the trigger wire and to the timing module, so as to convert the trigger signal generated by the seismic source propellant into a pulse signal and transmit the pulse signal to the timing module.

[0007] As one of the preferred embodiments, the detonation module further includes: The power module includes a first battery pack and a second battery pack, wherein the second battery pack is connected to the timing module; The boost module is connected to the first battery pack and the high-voltage capacitor module, respectively.

[0008] As one of the preferred embodiments, the detonation module further includes: The thermal module is used to monitor the ambient temperature of the working area where the detonation module is located; The safety control module is connected to the thermal module, the power module, and the boost module, respectively.

[0009] As one preferred embodiment, the pulse source further includes a trigger point connected to the timing module via the trigger wire; the trigger point includes a broken wire disposed in the middle region of the source propellant; or, a shock wave sensor mounted on the source propellant.

[0010] As one preferred embodiment, the pulse source further includes a detector disposed above the source propellant.

[0011] As one of the preferred solutions, the second battery pack is directly connected to the GPS timing module and the Beidou timing module of the timing module, and is also connected to the trigger module of the timing module through a step-down module.

[0012] As one of the preferred solutions, the first battery pack is connected to the boost module via a first control switch, and the high-voltage capacitor module is connected to the pulse source via a second control switch.

[0013] As one preferred embodiment, the device further includes: A computer, connected to the serial port of the timing module, is used to display the excitation time transmitted by the timing module.

[0014] Compared with the prior art, this application has the following advantages: The apparatus provided in this application includes: a detonation module, comprising a high-voltage capacitor module storing high-voltage electrical energy; a timing module, comprising at least one of a GPS timing module and a BeiDou timing module; and a pulse source connected to the high-voltage capacitor module and the timing module, respectively. When a detonation command is received, the high-voltage capacitor module transmits the high-voltage electrical energy to the pulse source, the pulse source detonates to generate a trigger signal, and transmits the trigger signal to the timing module, the timing module recording the excitation time of the source based on the reception time of the trigger signal.

[0015] By adopting the technical solution of this utility model embodiment, the coordinated control of seismic source excitation and time synchronization is realized by combining the high-voltage capacitor module and the GPS-BeiDou dual-mode timing module. It can automatically complete energy release and timing recording after receiving the detonation command. The GPS-BeiDou dual-mode timing module improves the accuracy and reliability of time recording, realizes remote, safe and controllable detonation, overcomes the problems of traditional seismic source synchronizers such as cumbersome operation, low synchronization time accuracy and low stability, and meets the requirements of refined exploration.

[0016] The pulse source can be selected from green, environmentally friendly, safe and environmentally friendly source charge, which can reduce or replace the use of traditional detonators / high-energy explosives. In particular, the expansion agent source can be used innovatively as a micro-logging excitation source in deep wells. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural diagram of the portable pulse vibration source excitation device according to an embodiment of this application; Figure 2 This is a schematic diagram of the usage process of the portable pulse source excitation device described in one embodiment of this application.

[0019] Explanation of reference numerals in the attached figures: 1. Initiation module; 2. Timing module; 3. Seismic source charge; 31. Ignition head; 32. Ignition wire; 33. Trigger wire. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Before providing a detailed description of the portable pulse vibration source excitation device provided by this utility model, it is necessary to explain the relevant technologies.

[0022] Currently, seismic exploration uses a variety of excitation sources, commonly including explosive sources, controlled seismic sources, air gun sources, and new green or low-environmental-impact sources proposed and promoted in recent years (such as gas explosion sources and lightweight impact sources). Explosive sources are commonly used and ideal pulse explosion sources. By burying explosives on the surface or underground, a high-amplitude impact energy is generated through instantaneous blasting, emitting a broadband energy approximating a pulse into the strata. They have advantages such as strong excitation energy, wide bandwidth, fast propagation speed, and applicability to both shallow and deep exploration. However, they require strict blasting safety management, complex on-site construction, and high requirements for detonation timing, synchronization, and safety. Controlled seismic sources generate controllable sweeping or constant-frequency vibrations through ground mechanical vibrators. The receiving end compresses the vibrations using matched filtering and other methods to obtain an equivalent pulse. They have advantages such as repeatable excitation, high data consistency, and adaptability to complex geological conditions. However, controlled seismic sources are bulky, heavy, and require high ground coupling, making them difficult to deploy in rugged terrain or when no work site can be established. Air gun seismic sources generate instantaneous pressure pulses by releasing high-pressure air in the ocean, making them suitable for exploration in oceans, lakes, and other bodies of water. Green seismic sources typically refer to those that utilize controlled gas blasting or high-pressure gas impact to generate shock waves, replacing traditional explosives; their reliability and consistency need to be verified.

[0023] It is evident that different seismic sources exhibit significant differences in triggering methods, energy scale, spectral distribution, coupling methods, safety constraints, and deployment flexibility, directly impacting the design objectives of source synchronizers and initiation systems. Regardless of source type, with increasing node density and the widespread adoption of distributed parallel excitation, time synchronization accuracy, triggering reliability, remote energy management, and safe initiation mechanisms have become core constraints in system-level design. The specific shortcomings of existing source synchronizers and initiation systems in terms of source triggering and time synchronization accuracy, triggering reliability, safety, and ease of operation are as follows: Insufficient accuracy in source triggering and time synchronization: Traditional conventional source synchronizers are cumbersome to operate, have low stability and reliability, high wiring costs, and are inconvenient to construct. Some research institutions have attempted to apply wireless communication technology to explosion effect testing, using wireless testing equipment to build distributed testing systems. However, these systems mostly use their own independent operating clocks and wired trigger signals, making it difficult to achieve accurate time synchronization.

[0024] Low safety and high operational complexity: Many seismic source charge 3 and detonators still require the installation of detonators and detonation via detonators. Construction involves a large amount of explosives and high-voltage lines, posing significant safety hazards (accidental triggering, short circuits, personnel exposure risks, etc.). The use of detonators / detonating cables increases the workload of transportation, loading, on-site deployment, and inspection, further increasing operational complexity.

[0025] Low triggering reliability: The method of using remote high-voltage discharge to trigger explosion often requires energy to be delivered to the detonation point through long-distance cables or transmission links. Line impedance, leakage loss and environmental conditions can lead to drawbacks such as large line loss, low energy transmission efficiency and less energy obtained by the remote load, resulting in insufficient or unstable triggering energy, which affects the reliability and safety of detonation.

[0026] It is evident that current methods of seismic source activation suffer from drawbacks such as cumbersome operation of the source synchronizer, poor safety of the detonation system, low time synchronization accuracy, and a lack of intelligent management functions, making it difficult to meet the demands of modern, refined seismic exploration. Therefore, there is an urgent need for a novel pulse source activation device capable of remote, safe, and controllable detonation, and accurate recording of the source detonation time, in order to improve the operational efficiency, data quality, and on-site safety of the entire exploration system.

[0027] Based on the above description, the technical solution of this utility model application will be described as follows: Reference Figure 1 As shown, Figure 1 This is a diagram showing the overall structural composition of the portable pulse vibration source excitation device of this utility model. Figure 1 As shown, this utility model provides a portable pulse source excitation device, which includes: a detonation module 1, including a high-voltage capacitor module storing high-voltage electrical energy; a timing module 2, including at least one of a GPS timing module and a Beidou timing module; and a pulse source connected to both the high-voltage capacitor module and the timing module 2. When a detonation command is received, the high-voltage capacitor module transmits high-voltage electrical energy to the pulse source, which detonates to generate a trigger signal and transmits the trigger signal to the timing module 2. The timing module 2 records the excitation time of the source based on the reception time of the trigger signal.

[0028] Specifically, the detonation module 1 is a vibration source excitation device that integrates energy output, energy management, energy storage, and energy release. A high-voltage capacitor module typically consists of one or more high-voltage capacitors, voltage detection and protection circuits, charge / discharge control circuits, insulation protection structures, and interfaces. This embodiment uses a high-voltage capacitor module as an energy storage capacitor detonator, which can store externally supplied energy and release it upon receiving a control command to drive the pulse source, completing the energy excitation or pulse output process. For example, the high-voltage capacitor in the high-voltage capacitor module uses a capacitor with a constant temperature coefficient, a capacitance of 30μF, a withstand voltage of 2500V, an operating voltage of 2200V, and an accuracy of ±5%.

[0029] The timing module 2 is a time synchronization device in the field measurement device or distributed energy triggering system. Both the GPS timing module and / or the BeiDou timing module employ satellite synchronization technology to receive satellite signals and record time. Therefore, the timing module 2 can synchronously output time information and the reception time of the trigger signal to the main control module or local control module, achieving system-level time synchronization. This embodiment preferably uses a GPS-BeiDou dual-mode timing module that simultaneously supports both GPS and BeiDou timing modules. This dual-mode timing module can simultaneously receive timing information from both GPS and BeiDou satellites, and uses software algorithms to fuse the two timing signals, improving the accuracy and reliability of time recording. Dual-mode satellite timing technology is a mature time synchronization solution. Applying this technology to this device ensures the accuracy of time synchronization between the detonation event and the data acquisition system, meeting the modern requirements for precision in seismic exploration.

[0030] Of course, in some alternative embodiments, either a GPS timing module or a BeiDou timing module can be used as the time synchronization device.

[0031] In this embodiment, the pulse source is a seismic exploration excitation source, specifically a pulse source, such as the explosive source, spark-type source, novel source, source charge 3, or other pulse sources mentioned above. By integrating the pulse source, timing module 2, and detonation module 1 into a single device, when the control system issues a detonation command (which can come from a manual button, remote signal, or automatic triggering system), the high-voltage capacitor module releases energy to the pulse source in a short time, causing it to detonate instantaneously and generate a high-energy shock wave, i.e., outputting a seismic wave trigger signal. This trigger signal is transmitted to the timing module via an electrical signal. The timing module receives the trigger signal and synchronously and accurately records its occurrence time, comparing it with a satellite synchronization clock to achieve precise synchronization between the source excitation time and the seismic data acquisition system time.

[0032] Therefore, by combining the high-voltage capacitor module and the GPS-BeiDou dual-mode timing module, the coordinated control of source excitation and time synchronization is realized. It can automatically complete energy release and timing recording after receiving the detonation command. The GPS-BeiDou dual-mode timing module improves the accuracy and reliability of time recording, realizes remote, safe and controllable detonation, overcomes the problems of traditional source synchronizers such as cumbersome operation, low synchronization time accuracy and low stability, and meets the requirements of refined exploration.

[0033] Preferably, the pulse source is selected as the source charge 3. The source charge 3 includes an ignition head 31, an ignition wire 32, and a trigger wire 33, and the source charge 3 is filled with an expanding agent; wherein, the ignition head 31 is connected to the high-voltage capacitor module through the ignition wire 32, and the source charge 3 is connected to the timing module 2 through the trigger wire 33.

[0034] As a specific explanation of this embodiment, the seismic source charge 3 is composed of components such as an ignition head 31, an ignition wire 32, and a trigger wire 33. The main component of the seismic source charge 3 is a thermally expanding propellant, which generates a blasting material with high temperature and rapid volume expansion through combustion. Specifically, the expanding agent can be ignited under high pressure to release a large amount of gas, which absorbs heat and expands, forming high pressure to destroy the target object in a confined space. The expanding agent is a non-explosive, and its blasting power is weaker than that of explosives. It is mainly used to replace traditional explosives for static demolition operations, such as urban building demolition and mining. Compared with large controllable seismic sources, the seismic source charge 3 is small in size and easy to deploy in complex terrain and high-density nodalization.

[0035] Currently, surface surveys in micro-logging mainly employ two methods: in-well excitation followed by surface reception and surface excitation followed by in-well reception. Deep well micro-logging commonly uses detonators for in-well excitation and geophones for surface reception. However, using detonators is costly and involves cumbersome procedures for handling explosives. In practical applications, considering the characteristics and advantages of the expanding agent source charge 3, and taking into account the specific project characteristics and terrain of the seismic team, particularly the unique terrain of southwestern mountains and loess plateaus where conventional explosive sources are unsuitable, a green expanding agent source was selected. After improvements and innovations according to seismic exploration industry standards, and through testing in seismic exploration projects, the source excitation energy met the data quality requirements of seismic acquisition. Therefore, source charge 3 is applied as a pulse source in the seismic exploration industry, providing more options for excitation sources in complex construction environments for seismic teams. Source charge 3 is environmentally friendly, highly safe, and has minimal environmental impact, reducing or replacing the use of traditional detonators / high-energy explosives. In particular, the expanding agent source can be innovatively used as an excitation source for deep well micro-logging.

[0036] Preferably, the expanding agent in the seismic source propellant 3 of this embodiment is a carbon-containing organic material, more specifically, carbon particles. The carbon particles have a diameter of 10mm-15mm and a length of 30mm-50mm.

[0037] The ignition head 31 at the top of the seismic source charge 3 is connected to the ignition output terminal of the high-voltage capacitor module via an ignition wire 32. A trigger wire 33 extends from the middle of the seismic source charge 3 and is connected to the pulse signal input terminal of the timing module 2. The ignition head 31 receives high-voltage electrical energy from the high-voltage capacitor module via the ignition wire 32 and ignites the expanding agent to generate expansion pressure. The trigger point of the trigger wire 33 in the middle of the seismic source charge 3 disconnects instantaneously due to the expansion of the burning high-pressure gas, and the signal of the disconnection of the trigger wire 33 is promptly sent to the timing module 2. The timing module 2 receives the pulse signal and records the excitation time. Therefore, by combining high-voltage capacitor energy storage with high-voltage initiation of the seismic source charge 3, the safety hazards of traditional detonator detonation methods are avoided, operational complexity is reduced, and the safety and reliability of the system are improved.

[0038] Then, the high-voltage energy storage and high-voltage excitation technology used in detonation module 1 is a type of high-energy ignition excitation method on the market. Its technical principles and device structure can be imitated and manufactured after the device is disassembled. The two signal triggering methods have relatively simple technical principles and can be replicated.

[0039] Unlike explosive sources, where the detonation time of a detonator is the same as the instrument's acquisition time, the carbon particles in an expanding agent source burn slowly. Using the ignition time of the detonation module 1 as the instrument's acquisition time results in a time delay. Therefore, using the detonation time of the source charge 3 as the instrument's excitation time is more accurate. To address this technical problem, in another embodiment of this invention, the timing module 2 further includes a trigger module. The trigger module is connected to the source charge 3 via a trigger wire 33 and to the timing module 2 to convert the trigger signal generated by the source charge 3 into a pulse signal and transmit the pulse signal to the timing module 2.

[0040] The trigger module, a dedicated functional unit within the timing module 2, is responsible for processing trigger signals. It connects the seismic source charge 3 and the timing module 2, converting the trigger signal output from the seismic source charge 3 into a pulse signal recognizable by the timing module 2. Specifically, the trigger module receives the trigger signal generated by the explosion of the seismic source charge 3, shapes it, and converts it into a 3.3V pulse signal, which is then sent to the timing module 2. The timing module 2 reads the satellite time based on the rising or falling edge of the pulse signal, achieving accurate recording of the seismic source excitation time. This trigger module design ensures the reliability of the trigger signal and the accuracy of the timing, improving the system's stability and safety in complex field environments.

[0041] In this embodiment, the trigger module can be a common switch-to-pulse signal module, used for wire breakage detection. By monitoring the continuity of the trigger wire 33 of the seismic source charge 3, the disconnection signal of the trigger wire 33 is converted into a 3.3V pulse signal through the module's internal signal circuit. Exemplarily, the trigger module includes a constant current source chip, a sensing resistor, a high-speed comparator, a Schmitt trigger, and protection circuitry. The constant current source chip (model LM334) provides a constant current (approximately 10mA) to the trigger wire 33. When the trigger wire 33 is disconnected, the current drops to zero, which is then output as the trigger signal. The sensing resistor is a 10Ω precision resistor connected in series in the circuit of the trigger wire 33, converting the current change in the wire into a voltage change, providing a detectable voltage signal for the high-speed comparator (model LM361). The high-speed comparator compares the voltage signal across the sensing resistor with a reference voltage to determine whether the wire is disconnected. When the trigger wire 33 is disconnected, the voltage across the sensing resistor becomes zero, and a flip signal is output, realizing switch-to-pulse detection. The Schmitt trigger (model 74LVC1G17) shapes the toggle signal output from the high-speed comparator, eliminating jitter and providing a clean rising edge pulse, further ensuring that the timing module receives a standard 3.3V pulse signal. Timing module 2 has an event flag input interface for receiving external pulses and recording precise time. The Schmitt trigger can send the 3.3V pulse signal to timing module 2 via an RS232 serial port, and timing module 2 records the absolute time of the vibration source excitation. Protection circuitry includes a resettable fuse and a TVS transient suppression diode to prevent accidental short circuits or overcurrent damage to the trigger module and timing module 2, thus ensuring the stability and reliability of the system in complex field environments.

[0042] Therefore, by setting a triggering device in the middle of the seismic source charge 3 to send a triggering signal and convert it into a pulse signal, real-time monitoring and recording of the projectile detonation time is achieved, solving the problem of slow combustion speed of the expanding agent source and the inability to use the ignition time as the instrument acquisition time. The combination of the triggering module and the timing module 2 achieves precise time synchronization, solving the time synchronization error problem caused by the independent working clocks in the prior art.

[0043] As a further explanation of this embodiment, the pulse source also includes a trigger point connected to the timing module 2 via a trigger wire 33; the trigger point includes a broken wire disposed in the middle region of the source propellant 3; or, a shock wave sensor mounted on the source propellant 3. Furthermore, the pulse source also includes a detector disposed above the source propellant 3.

[0044] In one design embodiment, the broken wire is a trigger element installed in the middle of the source charge 3 and connected to the input end of the trigger wire 33. The output end of the trigger wire 33 is connected to a constant current source. The broken wire melts when the source charge 3 detonates, creating a switch quantity change. This switch quantity change is detected by the trigger wire 33 and transmitted to the trigger module as a trigger signal. Therefore, the broken wire is designed in the middle of the projectile, and the time of the broken wire breaking circuit is the instrument's acquisition time.

[0045] In another design embodiment, a shock wave sensor can be installed on the outer shell or internal stress zone of the seismic source charge 3. When the seismic source charge 3 expands under high pressure, a shock wave is generated. The shock wave sensor detects the vibration change, which is detected by the trigger wire 33 and transmitted to the trigger module as a trigger signal. Therefore, the broken wire design can be modified to integrate the shock wave sensor on the projectile body as a redundant signal output. The sensor signal is sent to the GPS timer to record the time, which is used as the instrument's acquisition time, thus obtaining a more accurate excitation time.

[0046] Furthermore, an additional detector is used to correct the trigger signal. For example, an additional detector is used 1 meter above the projectile, and the detector's start-up time is used to correct the acquisition time.

[0047] The trigger module then converts the trigger signal into a pulse signal and transmits it to the timing module 2. This application can employ various triggering methods, such as placing a broken wire in the middle of the projectile and triggering the system by the on / off signal of the broken wire; or using a shock wave sensor mounted on the projectile, with the sensor's vibration signal when the projectile explodes serving as the trigger signal, and an additional detector used for signal correction. This approach can adapt to different seismic source types and exploration environments, improving the reliability of the trigger signal and the stability of the system.

[0048] In another technical solution, the detonation module 1 further includes: a power module comprising a first battery pack and a second battery pack, the second battery pack being connected to the timing module 2; and a boost module connected to both the first battery pack and the high-voltage capacitor module. The power module uses two lithium battery packs, supplying power to both the high-voltage capacitor module and the timing module 2. The lithium battery packs have a rated voltage of 12V, a capacity of 5000mAh, and a temperature coefficient set to ±1%, providing stable DC power to the entire device. The boost module connects the first battery pack and the high-voltage capacitor module, boosting the 12V DC power to 2200V, and then transmitting the boosted high-voltage power to the high-voltage capacitor module for rapid charging. The high-voltage capacitor module stores the boosted high-voltage energy and, under the control of the control unit, releases the energy to detonate the explosive charge 3.

[0049] For example, the boost module includes a switching circuit using MOSFETs as the switching transistors and a boost circuit composed of an inductor and a capacitor. The boost circuit adopts a half-bridge topology to boost the 12V voltage to a high voltage of over 2000V and store the boosted energy in the high-voltage capacitor. Simultaneously, the boost module can also be equipped with a temperature monitoring circuit to monitor the temperature of the boost circuit in real time and feed it back to the safety control module to prevent safety hazards caused by overheating. Therefore, by boosting the 12V to 2000V and storing it in the high-voltage capacitor through the boost module, efficient energy transmission and utilization are achieved, overcoming the problems of high line loss and low energy transmission efficiency in remote high-voltage initiation methods.

[0050] The detonation module 1 further includes: a thermistor module for monitoring the ambient temperature of the working area where the detonation module 1 is located; and a safety control module connected to the thermistor module, the power supply module, and the boost module, respectively. In this embodiment, the detonation module 1 includes a thermistor module, such as a thermistor, a thermal switch, or a temperature sensor, which can detect the ambient temperature when the detonation module 1 is working.

[0051] The safety control module may include control units connected to the thermal module and power module respectively. These control units can receive ambient temperature signals from the thermal module in real time and automatically cut off power supply when the ambient temperature exceeds 120°C. The safety control module may also include an intelligent thermal protection unit on the boost module. This unit is connected to the temperature monitoring circuit and boost circuit of the boost module, receives the boost temperature from the temperature detection circuit in real time, and automatically reduces the boost efficiency of the boost circuit when the boost temperature exceeds a set value to prevent overheating. The safety control module may also be connected to a high-voltage capacitor module, which can be configured with a discharge resistor with a resistance of 9.8KΩ to control the release of the capacitor voltage. Through the above design, the entire detonation module 1 achieves safe, reliable, and efficient operation in complex field environments.

[0052] In some embodiments, the control unit and the intelligent thermal protection unit are independent functional units. In some embodiments, the control unit and the intelligent thermal protection unit may be integrated into the boost module or the power management module.

[0053] Furthermore, the second battery pack is directly connected to the GPS timing module and the BeiDou timing module of the timing module 2, and is also connected to the trigger module of the timing module 2 via a step-down module. In this embodiment, both the first and second battery packs are 12V lithium battery packs. The second battery pack provides 12V power to the trigger module, the GPS timing module, and the BeiDou timing module, respectively. Specifically, the GPS timing module and the BeiDou timing module are directly powered by the 12V lithium battery, while the trigger module is powered by the 5V lithium battery. Therefore, the trigger module is connected to the second battery pack via a step-down module to output 5V after stepping down the 12V voltage.

[0054] Specifically, the first battery pack is connected to the boost module via a first control switch, and the high-voltage capacitor module is connected to the pulse source via a second control switch. The first control switch controls the charging path between the boost module and the high-voltage capacitor. The second control switch controls the excitation path between the high-voltage capacitor and the ignition output terminal. In practical design, the detonation module 1 and the timing module 2 can be encapsulated in a protective housing, with a switch knob on the housing. The switch knob is used to set the charging and activation positions, and is connected to the first and second control switches.

[0055] When the switch knob is turned to the charging position, the charging path of the first control switch is connected, the boost module works, raising the 12V voltage to approximately 2200V and storing energy in the high-voltage capacitor, while the excitation path is disconnected, and the system is in "standby charging" mode. After confirming safety, the knob is turned to the start position, the excitation path of the second control switch is connected, and the high-voltage capacitor instantly releases energy to the ignition head 31, igniting the ignition head 31 and achieving source excitation.

[0056] In conjunction with the above embodiments, the device further includes: a computer connected to the timing module 2 via a serial port, used to display the excitation time transmitted by the timing module 2. The timing module 2 is connected to the computer via a serial data cable. After receiving the trigger signal from the pulse source, the timing module 2 records the timestamp of the received trigger signal (provided by the GPS and BeiDou dual-mode timing system) as the source excitation time. Then, it uploads the time data to the computer via the serial data cable, and the computer software automatically records the GPS time and stores historical excitation records. The computer can be a tablet computer, etc.

[0057] The technical solution of this utility model will be described in more detail below with reference to the embodiments and accompanying drawings.

[0058] like Figure 1 and Figure 2 As shown, a portable pulse source excitation device includes a detonation module 1, a timing module 2, and a pulse source using a source charge 3 as the excitation source. The detonation module 1 includes a power module, a first control switch, a boost module, a second control switch, a high-voltage capacitor module, etc. The timing module 2 includes a trigger module and a GPS / BeiDou dual-mode timing module, etc. The timing module 2 is connected to a tablet computer via a serial data cable.

[0059] When in use, connect the detonation wire and trigger wire of the source charge 3. The boost module starts working to boost the 12V to 2000V and store it in the energy storage capacitor detonator. When the detonation command is received, the high-voltage capacitor module releases energy to detonate the source charge 3. The trigger signal generated by the explosion of the source charge 3 is processed by the trigger module and sent to the GPS Beidou dual-mode timing module for time recording. The data is then sent to the computer software via the serial port data cable.

[0060] The specific work process is as follows: Figure 2 , Figure 2 This is a flowchart illustrating the operation of a portable pulse source excitation device.

[0061] The detonator charge 3 is lowered into the borehole. Two ignition wires 32 and two trigger wires 33 are led to the initiation module 1. Ignition wires 32 are connected to the ignition output terminal of the high-voltage capacitor module, and trigger wires 33 are connected to the pulse signal input terminal of the trigger module. After connecting the wires, the detonator knob is turned to the charging position. The first control switch of the 12V lithium battery is turned on, and the 12V is boosted to approximately 2200V via the boost module and stored in the high-voltage capacitor module, completing the charging process. Upon receiving the detonation command, and confirming that personnel are at a safe distance, the detonator knob is turned to the start position, and the second control switch is turned on. The ignition head 31 within the detonator charge completes the activation of the expanding agent source.

[0062] Simultaneously with the detonation of explosive charge 3, the broken wire in the middle of the charge snaps instantaneously due to the expansion of the high-pressure combustion gas. The signal indicating the wire breakage is transmitted to the trigger module via trigger wire 33. Upon receiving the trigger signal, the trigger module converts it into a 3.3V pulse signal and sends it to the GPS / BeiDou dual-mode timing module. The GPS / BeiDou dual-mode timing module receives the pulse signal, records the excitation time, and transmits the time information via RS232 serial port to the serial port debugging software on the computer. The serial port debugging software records the GPS time in UTC (International Time). Seismic acquisition technicians use this time for subsequent node data segmentation and processing.

[0063] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0064] It should also be noted that, in this document, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance. Moreover, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device.

[0065] The portable pulse vibration source excitation device provided in this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand this application, and the content of this specification should not be construed as a limitation of this application. Furthermore, those skilled in the art will recognize that various modifications may be made to the specific implementation methods and application scope based on this application. It is neither necessary nor possible to exhaustively list all implementation methods here, but obvious variations or modifications derived therefrom are still within the protection scope of this application.

Claims

1. A portable impulse seismic source firing device, characterized by, The device includes: The detonation module includes a high-voltage capacitor module, which stores high-voltage electrical energy; A timing module, including at least one of a GPS timing module and a BeiDou timing module; A pulse source is connected to the high-voltage capacitor module and the timing module, respectively. When a detonation command is received, the high-voltage capacitor module transmits the high-voltage electrical energy to the pulse source. The pulse source detonates to generate a trigger signal and transmits the trigger signal to the timing module. The timing module records the excitation time of the source based on the reception time of the trigger signal.

2. A portable impulsive seismic source activation device according to claim 1, wherein, The pulse source includes a source charge, which includes an ignition head, an ignition wire, and a trigger wire, and is filled with an expanding agent; wherein, the ignition head is connected to the high-voltage capacitor module through the ignition wire, and the source charge is connected to the timing module through the trigger wire.

3. A portable impulsive seismic source activation device according to claim 2, wherein, The timing module also includes a trigger module, which is connected to the seismic source propellant via the trigger wire and to the timing module, so as to convert the trigger signal generated by the seismic source propellant into a pulse signal and transmit the pulse signal to the timing module.

4. The portable pulse vibration source excitation device according to claim 1, characterized in that, The detonation module also includes: The power module includes a first battery pack and a second battery pack, wherein the second battery pack is connected to the timing module; The boost module is connected to the first battery pack and the high-voltage capacitor module, respectively.

5. A portable pulse vibration source excitation device according to claim 4, characterized in that, The detonation module also includes: The thermal module is used to monitor the ambient temperature of the working area where the detonation module is located; The safety control module is connected to the thermal module, the power module, and the boost module, respectively.

6. A portable pulse vibration source excitation device according to claim 2, characterized in that, The pulse source also includes a trigger point connected to the timing module via the trigger wire; the trigger point includes a broken wire disposed in the middle region of the source propellant; or, a shock wave sensor mounted on the source propellant.

7. A portable pulse vibration source excitation device according to claim 2, characterized in that, The pulse source also includes a detector disposed above the source propellant.

8. A portable pulse vibration source excitation device according to claim 4, characterized in that, The second battery pack is directly connected to the GPS timing module and the Beidou timing module of the timing module, and is also connected to the trigger module of the timing module through a step-down module.

9. A portable pulse vibration source excitation device according to claim 4, characterized in that, The first battery pack is connected to the boost module via a first control switch, and the high-voltage capacitor module is connected to the pulse source via a second control switch.

10. A portable pulse vibration source excitation device according to any one of claims 1-9, characterized in that, The device further includes: A computer, connected to the serial port of the timing module, is used to display the excitation time transmitted by the timing module.

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