A seismic channel wave exploration device

Abstract

The utility model belongs to the seismic prospecting technical field of coal face, concretely relates to a seismic channel wave prospecting device. The utility model utilizes the self-healing twisted pair communication line of existing seismic channel wave appearance, additionally adds the voice communication subsystem which is composed of interphone and audio signal amplification device, realizes the time-sharing operation of seismic data acquisition subsystem and voice communication subsystem through system switch, avoids the influence of audio signal blockage of relay station, solves the problem of long line audio signal attenuation. The utility model adds the voice communication function on the basis of original seismic channel wave equipment, does not influence the normal operation function of original system, the reform cost is lower, can greatly improve the communication efficiency in the seismic channel wave exploration process, removes the trouble fast, has higher economic benefit and application value.

Description

Technical Field

[0001] This utility model belongs to the field of seismic exploration technology for coal mining faces, and specifically relates to a seismic channel wave exploration device. Background Technology

[0002] Seismic channel wave exploration, a type of seismic exploration, is currently widely used in longwall mining to investigate coal seam thickness and concealed geological structures. The main exploration methods include transmission and reflection methods. Transmission methods are primarily used for quantitative interpretation of coal seam thickness and as an auxiliary method for fault detection, while reflection methods are mainly used to detect fault structures. Seismic channel wave exploration is an accurate and efficient geophysical exploration method.

[0003] When conducting reflection method exploration, because the seismic source and detector are located in the same roadway, construction personnel can communicate by telephone or walkie-talkie to quickly resolve problems. However, when conducting transmission method exploration, because the seismic source and detector are located in roadways on both sides of the working face, walkie-talkie communication is impossible. Most mines lack full communication network coverage, and telephones are only installed at roadway entrances and upper / lower bends. Therefore, if a malfunction occurs during construction, communication is difficult, often requiring multiple rounds of troubleshooting to identify the fault, severely impacting construction efficiency.

[0004] To address these issues, a voice communication system compatible with seismic trench exploration equipment is needed to facilitate voice communication and timely troubleshooting in case of system malfunctions. Currently, the commonly used SUMMIT II seismic trench instrument manufactured by the German company DMT lacks a built-in voice communication function. While this type of seismic trench instrument has digital communication lines, repeater stations are required along long survey lines to enhance the signal and compensate for line attenuation. If the existing digital communication lines of this type of seismic trench instrument are used to simultaneously carry voice communication, the repeater stations will obstruct the audio signal, and the attenuation of the audio signal over long lines will also affect the voice communication quality. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the technical problem to be solved by the present invention is to add a supporting voice communication system to the digital signal communication line of the existing seismic channel wave instrument, so as to avoid the impact of the relay station on the audio signal blockage and the attenuation of the audio signal over long lines, and realize normal voice communication at the construction site.

[0006] This utility model proposes a seismic channel wave exploration device with voice communication function, the technical solution of which is as follows:

[0007] A seismic channel wave exploration device with voice communication function includes a seismic signal acquisition subsystem, a voice communication subsystem, a system switch, and self-healing twisted-pair cables in groups. The seismic signal acquisition subsystem, the voice communication subsystem, and the system switch are connected and communicate with each other through a first group, a second group, a third group, and a fourth group of self-healing twisted-pair cables in groups. The seismic signal acquisition subsystem and the voice communication subsystem are controlled by the system switch to operate in a time-sharing manner. When the system switch is closed, the seismic signal acquisition subsystem is in operation and the voice communication subsystem is in a stopped state. When the system switch is open, the seismic signal acquisition subsystem stops operating and the voice communication subsystem starts operating.

[0008] The seismic signal acquisition subsystem is used to excite, transmit, and record vibration signals. It includes a geophone, acquisition station, host computer, blasting machine, triggering unit, shot point, vibration triggering device, and relay station. The geophone and acquisition station in the seismic signal acquisition subsystem are connected to either a first set of self-healing twisted-pair cables or a second set of self-healing twisted-pair cables. The first and second sets of self-healing twisted-pair cables are connected via a relay station. The triggering unit and vibration triggering device are connected to a fourth set of self-healing twisted-pair cables. The operation of the seismic signal acquisition subsystem is as follows: the blasting machine excites the shot point to generate vibration; the vibration triggering device receives the vibration energy and sends a short-circuit signal to the triggering unit; the triggering unit then sends a trigger request to the host computer via the fourth and third sets of self-healing twisted-pair cables. Upon receiving the trigger request, the host computer opens the data interface of the acquisition station. The acquisition station receives the simulated vibration signal collected by the geophone, converts it into a digital signal, and sends it to the host computer via the first and second sets of self-healing twisted-pair cables.

[0009] The voice communication subsystem includes two handsets and one audio signal amplification device for implementing voice communication functions. The voice communication subsystem is connected to a third and fourth set of self-healing twisted-pair cables, which are linked by two pin-prong connectors. An audio signal amplification device is installed between these two pin-prong connectors. When voice communication is required, the handsets are connected to the line, and the audio signal is amplified before transmission.

[0010] Preferably, the audio signal amplification device in the voice communication subsystem comprises an audio signal detection and control module, an audio signal amplification module, a relay, a power supply, and circuitry. The detection end of the audio signal detection and control module is connected in parallel to the circuit, while the control end is connected to the power supply and the relay. The detection end is responsible for detecting the audio signal in the circuitry, and the control end is responsible for switching between the slot wave digital communication circuitry and the audio signal amplification circuitry.

[0011] Preferably, the relay is an 8-pin relay, with two pins open and two pins closed, responsible for circuit switching.

[0012] Preferably, the four pins of the audio signal amplification module are connected to the normally open and normally closed terminals of the relay, respectively.

[0013] This invention uses two double-pin connectors to connect the third and fourth sets of self-healing twisted-pair cables carrying the voice communication subsystem, eliminating the need for a relay station and solving the problem of relay stations blocking audio signals. However, the first and second sets of self-healing twisted-pair cables carrying the seismic signal acquisition subsystem are still connected through a relay station, without affecting the signal enhancement and line attenuation compensation of the digital communication of the acquisition station.

[0014] This invention adds a system switch to the communication line. When the switch is closed, trigger and control signal transmission and seismic signal acquisition are carried out normally. When the switch is open, the seismic signal acquisition subsystem stops operating, avoiding interference of the seismic signal acquisition subsystem with the intercom, and supporting normal voice communication.

[0015] The maximum communication distance of a walkie-talkie is 300m. Exceeding this distance will lead to increased interference and decreased call quality. The audio signal amplification device used in this invention can amplify the audio signal and shield interference signals to ensure communication quality.

[0016] This invention utilizes an audio signal detection and control module in conjunction with a relay to control whether the audio signal amplification module is connected to the line, ensuring real-time switching between digital and audio signals in the communication channel without affecting the transmission of seismic trough wave triggering and control signals.

[0017] In summary, this invention improves upon existing seismic channel wave equipment by adding voice communication functionality without affecting the normal operation of the original system. It has low modification costs, significantly improves communication efficiency during seismic channel wave exploration, and enables rapid troubleshooting, thus possessing high economic benefits and application value. Attached Figure Description

[0018] Figure 1 Schematic diagram of the architecture of the seismic signal acquisition subsystem and the voice communication subsystem.

[0019] Figure 2 Structural diagram of a seismic trough wave exploration device with voice communication function.

[0020] Figure 3 Schematic diagram of the functional structure of an audio signal amplification device.

[0021] In the attached diagram, G1~Gn are detectors; A1~An are acquisition stations; B is a two-pin connector; S1 is the firing point; C is the vibration triggering device; X1~X4 are self-healing twisted-pair cables; R1 and R2 are resistors (R1=R2=100Ω); M is the firing mechanism; Z is the repeater station; P is the intercom; T is the triggering unit; K is the system switch; and H is the main unit. Detailed Implementation

[0022] The technical solution of this utility model will now be described more clearly and completely with reference to the accompanying drawings.

[0023] like Figures 1-2 The seismic channel wave exploration device shown includes a seismic signal acquisition subsystem, a voice communication subsystem, a system switch (K), and grouped self-healing twisted-pair lines (X1 to X4). The seismic signal acquisition subsystem, the voice communication subsystem, and the system switch (K) are connected and communicate through the grouped self-healing twisted-pair lines (X1 to X4), each group being 250m long.

[0024] The seismic signal acquisition subsystem is used to excite and transmit recorded vibration signals, including detectors (G1~Gn), acquisition stations (A1~An), main unit (H), blasting machine (M), triggering unit (T), blast point (S1), vibration triggering device (C) and relay station (Z). The self-healing twisted pair cables X1 and X2 carrying the signals of the acquisition stations (A1~An) of the seismic signal acquisition subsystem are connected through the relay station (Z). The triggering unit (T) and the vibration triggering device (C) are set on the self-healing twisted pair cable X4.

[0025] The voice communication subsystem includes two handsets (P) and one audio signal amplification device for implementing voice communication functions. The packet self-healing twisted-pair cables X3 and X4 carrying the voice communication subsystem are connected via two two-pin connectors (B). An audio signal amplification device is installed between these two two-pin connectors (B). When communication is required, the handsets (P) are connected to the line, and the audio signal is amplified by the audio signal amplification device before transmission.

[0026] Preferred, such as Figure 3As shown, the audio signal amplification device in the voice communication subsystem comprises an audio signal detection and control module, an audio signal amplification module, a relay, a power supply, and circuitry. The audio signal amplification module amplifies the audio signal, and the relay handles circuit switching. The detection terminal of the audio signal detection and control module is connected in parallel to the circuit, while the control terminal is connected to the power supply and the relay. It is powered by a 6V power supply. The detection terminal detects the audio signal in the circuit, and the control terminal switches between the slot-wave digital communication line and the audio signal amplification line. When the seismic signal acquisition subsystem is running, the relay of the audio signal amplification device is in its initial state, with its normally closed contacts closed and normally open contacts open. Trigger and control signals are transmitted normally through the two normally closed terminals of the relay. Other core components of the audio signal amplification device are not connected to the system. When the voice communication subsystem is running, the intercom connects and generates an audio signal. After the audio signal detection and control module detects the audio signal, its control terminal closes, activating the relay. The relay then opens its normally closed contacts and closes its normally open contacts, automatically switching the circuit to the audio signal amplification module, which amplifies and transmits the audio signal. When voice communication ends, after detecting the last audio signal, the audio signal detection and control module delays for 10 seconds before opening its control terminal. The relay then closes its normally closed contacts and opens its normally open contacts, returning the relay to its initial state. At this time, the self-healing twisted-pair lines X3 and X4 of the group switch back to the mode supporting the transmission of trigger and control signals for the seismic signal acquisition subsystem. The delay duration is adjustable.

[0027] Preferably, the relay is an 8-pin relay, with two open and two closed pins, powered by a 6V power supply.

[0028] Preferably, the four pins of the audio signal amplification module are connected to the normally open and normally closed terminals of the relay, respectively, and are powered by a 6V power supply.

[0029] The seismic signal acquisition subsystem and voice communication subsystem are controlled by a system switch (K) and operate in a time-sharing manner. When the system switch (K) is closed, the seismic signal acquisition subsystem is in operation, and the voice communication subsystem is in a stopped state; when the system switch (K) is open, the seismic signal acquisition subsystem stops operating, and the voice communication subsystem starts operating. Specifically, when the system switch (K) is closed, the self-healing twisted-pair lines (X1~X4) of the group are all in a connected state, the seismic signal acquisition subsystem operates normally, the blasting machine (M) triggers the blast point (S1) to generate vibration, the vibration triggering device (C) receives the vibration energy and sends a short-circuit signal to the triggering unit (T), the triggering unit (T) then sends a trigger request to the host (H) through the self-healing twisted-pair lines X4 and X3 of the group. After receiving the trigger request, the host (H) opens the data interface of the acquisition station (A1~An), the acquisition station (A1~An) receives the vibration analog signal collected by the detector (G1~Gn) and converts it into a digital signal and passes it through the self-healing line of the group. Twisted pair lines X1 and X2 transmit signals to the host. When voice communication is required, the system switch (K) is disconnected. This interrupts the self-healing twisted pair line (X3) carrying trigger and control signal communication between the vibration triggering device (C) and the host (H), halting the trigger and control signals and causing the seismic acquisition subsystem to stop operating. At this time, a handset (P) is connected for voice communication. Upon detecting an audio signal, the audio signal detection and control module in the audio signal amplification device automatically switches the circuit to the audio signal amplification module, which then amplifies and transmits the audio signal. When voice communication ends, after detecting the last audio signal, the audio signal detection and control module delays for 10 seconds, and the relay returns to its initial state. The grouped self-healing twisted pair lines X3 and X4 switch back to the mode supporting the transmission of trigger and control signals for the seismic signal acquisition subsystem. Closing the system switch (K) at this time restarts the seismic signal acquisition subsystem.

Claims

1. A seismic channel wave exploration device with voice communication function, characterized in that, The system includes a seismic signal acquisition subsystem, a voice communication subsystem, a system switch (K), a first set of self-healing twisted-pair cables (X1), a second set of self-healing twisted-pair cables (X2), a third set of self-healing twisted-pair cables (X3), and a fourth set of self-healing twisted-pair cables (X4). The seismic signal acquisition subsystem, the voice communication subsystem, and the system switch (K) are connected and communicate with each other through the first set of self-healing twisted-pair cables (X1), the second set of self-healing twisted-pair cables (X2), the third set of self-healing twisted-pair cables (X3), and the fourth set of self-healing twisted-pair cables (X4). The seismic signal acquisition subsystem includes a geophone, an acquisition station, a host (H), a shot generator (M), a trigger unit (T), a shot point (S1), a vibration triggering device (C), and a relay station (Z). The geophone and the acquisition station are installed on the first set of self-healing twisted pairs (X1) or the second set of self-healing twisted pairs (X2). The first set of self-healing twisted pairs (X1) and the second set of self-healing twisted pairs (X2) are connected through the relay station (Z). The trigger unit (T) and the vibration triggering device (C) are installed on the fourth set of self-healing twisted pairs (X4). The voice communication subsystem includes two handsets (P) and one audio signal amplification device. The voice communication subsystem is installed on the third set of self-healing twisted pair cables (X3) and the fourth set of self-healing twisted pair cables (X4). The third set of self-healing twisted pair cables (X3) and the fourth set of self-healing twisted pair cables (X4) are connected through two two-pin connectors (B). The audio signal amplification device is installed between the third set of self-healing twisted pair cables (X3) and the fourth set of self-healing twisted pair cables (X4). The system switch (K) is installed on the third set of self-healing twisted-pair cables (X3), located between the host (H) of the seismic signal acquisition subsystem and the voice communication subsystem.

2. The seismic trough wave exploration device with voice communication function according to claim 1, characterized in that, The audio signal amplification device in the voice communication subsystem includes an audio signal detection and control module, an audio signal amplification module, a relay, a power supply, and circuitry. The detection terminal of the audio signal detection and control module is connected in parallel to the circuit, and the control terminal is connected to the power supply and the relay.

3. The seismic trough wave exploration device with voice communication function according to claim 2, characterized in that, The relay is an 8-pin relay, with two pins open and two pins closed.

4. The seismic channel wave exploration device with voice communication function according to claim 3, characterized in that, The audio signal amplification module has 4 pins, which are connected to the normally open and normally closed terminals of the relay, respectively.

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