CN111399081A - Zero setting device of deep well seismometer - Google Patents

Abstract

This specification provides a zero-setting device for a deep-well seismometer. The deep-well seismometer includes a three-way pendulum body, each pendulum body includes a pendulum body support and a pendulum, and the bottom of the pendulum body support is connected with the pendulum through a cross reed, The zero-adjustment device includes: a drive unit, a transmission mechanism and a zero-adjustment reed; the power end of the drive unit is connected with one end of the zero-adjustment reed through the transmission mechanism, and the other end of the zero-adjustment reed is connected to the zero-adjustment reed. The pendulums are connected; the driving unit moves, and drives the zero-adjusting reed to deform through the transmission mechanism, and the zero-adjusting reed drives the pendulum to move to the zero position. This manual enables zeroing of deep well seismometers.

Description

A zero-setting device for deep well seismometer

technical field

The present specification relates to the technical field of seismic observation, and in particular, to a zero-adjusting device for a deep-well seismometer.

Background technique

The deep well seismometer is a precision observation instrument used for deep well observation. It can obtain excellent observation data due to its environmental advantages such as low noise and interference in the observation environment. After the deep well seismometer is installed in the deep well, it needs to be zeroed first to ensure the normal working condition. In order to realize the zero adjustment of the deep well seismometer, it is necessary to fully consider the installation conditions of the deep well. The movable range is very small, and zero adjustment cannot be achieved by adjusting the overall installation posture of the pendulum body. Third, the deep well seismometer needs to have an automatic zero adjustment function.

SUMMARY OF THE INVENTION

In view of this, the purpose of this specification is to propose a zero-adjustment device for a deep-well seismometer, which can realize the zero-adjustment function of a deep-well seismometer.

Based on the above purpose, one or more embodiments of the present specification provide a zero-setting device for a deep well seismometer, the deep well seismometer includes a three-way pendulum body, each pendulum body includes a pendulum body support and a pendulum, and the bottom of the pendulum body support It is connected with the pendulum through the cross reed, and the zero adjustment device includes: a drive unit, a transmission mechanism and a zero adjustment reed;

The power end of the driving unit is connected with one end of the zero-adjusting reed through the transmission mechanism, and the other end of the zero-adjusting reed is connected with the pendulum;

When the driving unit moves, the zero-adjusting reed is driven to deform by the transmission mechanism, and the zero-adjusting reed drives the pendulum to move to the zero position.

Optionally, the transmission mechanism includes a turbine, a worm, a zero-adjusting screw, a zero-adjustment lever, a zero-adjustment lever, and a zero-adjustment shaft, and the power end of the drive unit passes through the worm, the turbine, the zero-adjustment screw, The zero-adjustment lever, the zero-adjustment lever, and the zero-adjustment rotating shaft are connected with the zero-adjustment reed.

Optionally, the zero-adjustment reed is a curved spring with elastic force, one end of the zero-adjustment reed is connected to the zero-adjustment shaft, and the other end of the zero-adjustment reed is connected to the pendulum. The hammers are connected, and the zero adjustment reed can be forced to drive the pendulum to swing with the cross reed as the axis, which can realize a zero adjustment range of 5 degrees.

Optionally, the device further includes:

a zero position detection unit for detecting the position signal of the pendulum body;

a control unit, configured to determine a control signal for controlling the action of the drive unit according to the position signal; the control unit includes:

an analog-to-digital conversion circuit for converting the position signal into a digital position signal;

The processing unit is configured to determine a control signal for controlling the action of the driving unit according to the digital position signal.

Optionally, the processing unit includes:

a position judging module for judging whether the pendulum body is within the coarse adjustment position range according to the digital position signal;

The coarse adjustment module is configured to determine the coarse adjustment control signal when it is judged that the pendulum body is within the coarse adjustment position range.

Optionally, the coarse adjustment module is configured to determine a first deviation distance between the current position of the pendulum body and the equilibrium position according to the digital position signal, and determine the coarse adjustment control signal according to the first deviation distance .

Optionally, the processing unit includes:

a position judging module for judging whether the pendulum body is within the fine adjustment position range according to the digital position signal;

The fine adjustment module is used for determining the fine adjustment control signal when it is judged that the pendulum body is within the fine adjustment position range.

Optionally, the fine adjustment module is configured to determine the second deviation position between the current position of the pendulum body and the equilibrium position according to the digital position signal, and determine the fine adjustment control signal according to the second deviation distance.

Optionally, the processing unit includes:

a position judging module for judging whether the pendulum body is within the range of the equilibrium position according to the digital position signal;

The stop adjustment module is used for determining the stop control signal when it is judged that the pendulum body is within the range of the equilibrium position.

Optionally, the zero adjustment device further includes:

The zero-adjustment limit circuit is arranged on the transmission mechanism. During the zero-adjustment process, when the transmission mechanism contacts the casing of the seismometer, the zero-adjustment limit circuit sends a limit signal to the control unit to causing the control unit to send a control signal for reverse action to the drive unit.

It can be seen from the above that the zero-adjustment device for deep well seismometers provided in this specification includes a drive unit, a transmission mechanism and a zero-adjustment reed. The power end of the drive unit is connected to one end of the zero-adjustment reed through the transmission mechanism. The other end of the zero-adjustment reed is connected to the pendulum; the drive unit acts, and the zero-adjustment reed is driven to deform by the transmission mechanism, and the zero-adjustment reed drives the pendulum to move to the zero position; the zero-adjustment device of this embodiment does not need to be adjusted The overall installation posture of the pendulum body can be zero-adjusted within the zero-adjustment range of 5 degrees, and the zero-adjustment function of the deep-well seismometer can be realized.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present specification or the prior art, the following briefly introduces the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of this specification, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram of a device according to an embodiment of the present specification;

FIG. 2 is a cross-sectional view of the device according to the embodiment of the specification;

FIG. 3 is a schematic three-dimensional structure diagram of the device according to the embodiment of the specification;

4 is a structural block diagram of a control unit according to an embodiment of the present specification;

FIG. 5 is a simplified schematic diagram of the position of the pendulum body according to the embodiment of the present specification.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present specification more clear, the present specification will be further described in detail below with reference to specific embodiments and accompanying drawings.

It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present specification shall have the usual meanings understood by those with ordinary skill in the art to which this disclosure belongs. As used in this disclosure, "first," "second," and similar terms do not denote any order, quantity, or importance, but are merely used to distinguish the various components. "Comprises" or "comprising" and similar words mean that the elements or things appearing before the word encompass the elements or things recited after the word and their equivalents, but do not exclude other elements or things. Words like "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "Down", "Left", "Right", etc. are only used to represent the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

In some methods, some seismometers can be adjusted to zero by manual adjustment. The manual zero adjustment method is suitable for applications where the installation position is convenient for manual operation and the zero adjustment range is about 0.1 degrees; some seismometers can realize automatic zero adjustment, and have Larger zero adjustment range (for example, the zero adjustment range is 2-3 degrees), however, the larger zero adjustment range is generally achieved by adjusting the overall installation posture of the pendulum body, which is suitable for the relatively large installation space and the pendulum body. Applications with large activity space. However, for deep-well seismometers, they are generally installed at or below 500 meters downhole. Due to the limitation of installation conditions, the overall volume of deep-well seismometers is small, and the activity space in the well is very small. It is impossible to adjust the overall installation posture of the pendulum body to achieve zero adjustment. , Moreover, there is a well deviation in the downhole, which requires the deep well seismometer to have a large zero adjustment range, and should have an automatic zero adjustment function.

In order to solve the above problems, this specification provides a zero-adjustment device for a deep well seismometer, which includes a drive unit, a transmission mechanism, and a zero-adjustment reed. The pendulum of the pendulum body moves to the zero position to achieve zero adjustment without adjusting the overall installation posture of the pendulum body, and the adjustable range is large, which can realize the zero adjustment of the deep well seismometer.

The present specification will be described in detail below with reference to the embodiments.

As shown in Figure 1-3, the zero-setting device for deep-well seismometers provided in this manual is suitable for deep-well seismometers. Deep-well seismometers include east-west pendulum, north-south pendulum, and vertical pendulum. It is fixedly installed on the base. Any pendulum body includes a pendulum body support 14 and a pendulum weight 11. The bottom of the pendulum body support 14 is connected with the pendulum weight 11 through the cross reed 10. Motion senses ground motion.

Each pendulum is provided with a zero-adjusting device. The zero-adjusting device includes a drive unit 2, a transmission mechanism, and a zero-adjustment reed 9. The power end of the drive unit 2 is connected to one end of the zero-adjustment reed 9 through a transmission mechanism. The other end of the sheet 9 is connected with the pendulum 11;

When the driving unit 2 moves, the zero-adjusting reed 9 is driven to deform by the transmission mechanism, and the zero-adjusting reed 9 drives the pendulum 11 to move to the zero position.

In this embodiment, a zero-adjusting device is provided on each pendulum body of the deep well seismometer, and the drive unit 2 is connected to the pendulum 11 of the pendulum body through a transmission mechanism and a zero-adjusting reed 9 . The drive unit 2 that has received the zero-adjustment command moves, and drives the transmission mechanism, which causes the zero-adjustment reed 9 to deform, and the zero-adjustment reed 9 drives the pendulum 11 to move to the zero position. The drive unit 2 stops moving, and the pendulum body completes the zero adjustment; the three pendulum bodies of the deep well seismometer all complete the zero adjustment through their respective zero adjustment devices, and the deep well seismometer completes the zero adjustment. The zero-adjusting device of this embodiment drives the pendulum 11 to move to the zero position through the zero-adjusting reed 9, the overall installation posture of the pendulum body remains unchanged, and the position of the pendulum body relative to the seismometer casing does not change, which can realize zero adjustment. The range is 5 degrees, and the zero adjustment range is large, which can be applied to the zero adjustment of deep well seismometers.

As shown in the figure, in this embodiment, the transmission mechanism includes a turbine 3, a vortex rod 4, a zero adjustment screw 15, a zero adjustment lever 6, a zero adjustment lever 7, and a zero adjustment shaft 8. The power end of the drive unit 2 passes through the worm rod. 4. Turbine 3, zero adjusting screw 15, zero adjusting lever 6, zero adjusting lever 7, zero adjusting shaft 8 and zero adjusting reed 9 are connected. Specifically, the drive unit 2 , the turbine 3 , the worm 4 , and the zero-adjusting screw 15 are fixed on the pendulum bracket 14 through the base 1 . The zero-adjusting screw 15 can move left and right along the base 1 under the driving of the turbine 3 . One end of the zero-adjustment lever 6 is movably connected to one end of the zero-adjustment lever 6 through the pin shaft 151, the other end of the zero-adjustment lever 6 is movably connected to one end of the zero-adjustment fork 7, and the other end of the zero-adjustment fork 7 passes through the zero-adjustment shaft 8. The connecting shaft 71 is connected, the other end of the zero adjusting shaft 8 is connected with one end of the zero adjusting reed 9, the zero adjusting lever 6 is connected with the pendulum body bracket 14 through the rotating shaft 5, and the zero adjusting lever 6 can rotate around the rotating shaft 5; The drive unit 2 moves, the worm shaft 4 drives the turbine 3 to rotate, the turbine 3 drives the zero adjustment screw 15 to move left and right, one end of the zero adjustment lever 6 moves left and right with the zero adjustment screw 5 and rotates around the shaft 5, and the other side of the zero adjustment lever 6 rotates. One end drives the zero-adjustment fork 7 to rotate with the connecting shaft 71, the zero-adjustment fork 7 rotates, drives the zero-adjustment shaft 8 to rotate, the zero-adjustment shaft 8 rotates, drives the zero-adjustment reed 9 to deform, and the zero-adjustment reed 9 pairs the pendulum The force of 11 changes, and the pendulum 11 swings with the cross spring 10 as the axis. Optionally, the driving unit may be a component capable of providing driving force, such as a motor.

In some embodiments, the zero-adjustment reed 9 is a curved spring plate with elastic force, one end of the zero-adjustment reed 9 is connected with the zero-adjustment shaft 8, and the other end of the zero-adjustment reed 9 is connected with the pendulum 11, When the zero-adjustment shaft 8 rotates, the bending degree of the zero-adjustment reed 9 changes, and the zero-adjustment reed 9 exerts a force on the pendulum 11. The shaft swings, when the pendulum 11 swings to the zero position, the zero adjustment shaft 8 stops rotating, and the pendulum 11 is adjusted to the zero position. By adjusting the position of the pendulum 11 by the zero-adjusting reed 9, it is possible to achieve a positive or negative 5 degrees (with the horizontal plane as the reference plane inclined by 5 degrees in the first direction, and inclined by 5 degrees in the second direction opposite to the first direction). The zero adjustment range is suitable for deep downhole applications with a certain degree of well deviation.

In some embodiments, the zero-setting device for the deep-well seismometer further includes:

The zero position detection unit is used to detect the position signal of the pendulum body;

The control unit is used for determining the control signal for controlling the action of the driving unit 2 according to the position signal.

In this embodiment, the zero adjustment device further includes a zero position detection unit and a control unit, the signal output end of the zero position detection unit is connected with the signal input end of the control unit, and the control signal output end of the control unit is connected with the control end of the drive unit 2 connected. When the control unit judges that the pendulum is in a non-zero position according to the position signal of the zero position detection unit, the control unit sends a zero adjustment command to the drive unit 2 to control the action of the drive unit 2, the drive unit 2 drives the transmission mechanism to move, and the zero adjustment reed 9 is elastically deformed by force, and the zero-adjusting reed 9 drives the pendulum 11 to swing around the cross reed 10. During the swinging process of the pendulum 11, when the pendulum is judged to be in the zero-position state according to the position signal of the zero-position detection unit, the control unit Send a stop command to the drive unit 2 to control the drive unit 2 to stop the action and complete the zero adjustment of the pendulum body.

As shown in the figure, in some embodiments, the pendulum 11 of the pendulum is provided with a first capacitive moving plate 121 and a second capacitive moving plate 122, and the pendulum support is provided with a capacitive fixed plate 13; the zero position detection unit is a capacitor Displacement detection circuit, the capacitance displacement detection circuit detects the capacitance value C1 between the capacitance fixed plate 13 and the first capacitance moving plate 121 and the capacitance value C2 between the capacitance fixed plate 13 and the second capacitance moving plate 122. The control unit detects the circuit according to the capacitance displacement detection circuit. The detected position signal judges whether the pendulum is in the zero position state. For example, when the capacitance displacement detection circuit detects C1≠C2, it determines that the pendulum is in a non-zero position, and the control unit sends a zero-adjustment command to the drive unit 2; when the capacitance displacement detection circuit detects C1=C2, it determines that the pendulum is in a non-zero position. In the zero position state, the control unit sends a stop command to the drive unit 2 to complete the zero adjustment. In this way, the zero adjustment device of this embodiment can realize the automatic zero adjustment of the pendulum body.

In this embodiment, the zero-adjustment device of the deep-well seismometer can realize self-adaptive high-precision zero-adjustment. As shown in Figure 4, the control unit includes:

An analog-to-digital conversion circuit is used to convert the position signal detected by the zero position detection unit into a digital position signal;

The processing unit is configured to determine a control signal for controlling the action of the driving unit 2 according to the digital position signal.

In this embodiment, the self-adaptive zero adjustment process of the zero adjustment device is that the zero position detection unit detects the position signal of the pendulum body, and transmits the detected position signal to the analog-to-digital conversion unit, and the analog-to-digital conversion unit performs analog-to-digital analysis on the position signal. Convert, transmit the converted digital position signal to the processing unit, the processing unit judges whether the pendulum has reached the equilibrium position according to the received digital position signal, if not, the processing unit sends a zero adjustment control signal to the drive unit 2, The drive unit 2 performs zero adjustment according to the received zero adjustment control signal; if the equilibrium position is reached, the processing unit sends a stop control signal to the drive unit 2, and the drive unit 2 receives the stop control signal, stops the action, and the seismometer pendulum is completed. Zero, it can work normally. The zero-adjustment device of the deep-well seismometer in this embodiment can realize the automatic zero-adjustment of the pendulum body, is convenient to use, and is suitable for underground use.

In this embodiment, since the seismometer is a precision instrument, the zero adjustment accuracy directly affects the detection accuracy of the seismometer. Therefore, in this embodiment, the pendulum body is accurately zero adjusted by first coarse adjustment and then fine adjustment. For the coarse adjustment process, the processing unit includes:

The position judgment module is used to judge whether the pendulum body is within the coarse adjustment position range according to the digital position signal;

The coarse adjustment module is used for determining the coarse adjustment control signal when it is judged that the pendulum body is within the coarse adjustment position range.

As shown in Figure 5, the pendulum body can swing between the first limit position and the second limit position. When the position signal detected by the zero position detection unit is used, it is determined that the pendulum body is located between the first limit position and the first coarse adjustment position. When the coarse adjustment position is within the range of the coarse adjustment position, or within the coarse adjustment position range between the second limit position and the second coarse adjustment position, the pendulum body position is coarsely adjusted, and the processing unit transmits the determined coarse adjustment control signal to the drive Unit 2, the drive unit 2 performs a coarse adjustment action according to the coarse adjustment control signal, and after the coarse adjustment, adjusts the position of the pendulum body within the range of the fine adjustment position.

For the fine-tuning process, the processing unit includes:

The position judgment module is used to judge whether the pendulum body is within the fine adjustment position range according to the digital position signal;

The fine adjustment module is used for determining the fine adjustment control signal when it is judged that the pendulum body is within the fine adjustment position range.

As shown in Fig. 5, after the rough adjustment, the pendulum body is located within the fine adjustment position range between the first coarse adjustment position and the first balance position, or is located in the fine adjustment position between the second coarse adjustment position and the second balance position The position of the pendulum body needs to be finely adjusted. The processing unit transmits the determined fine adjustment control signal to the drive unit 2, and the drive unit 2 performs the fine adjustment action according to the fine adjustment control signal. After the fine adjustment, The pendulum position can be adjusted to within the range of the equilibrium position.

In this embodiment, the coarse adjustment position range is larger than the fine adjustment position range, and the coarse adjustment control signal is different from the fine adjustment control signal. Since the seismometer is a precision instrument, the zero adjustment must be accurate to ensure the detection accuracy of the seismometer. If the same control signal is used to control the action of the leveling drive unit, after the pendulum reaches the fine adjustment position range (extremely small distance range), it is easy to If the balance position is bypassed and deviated from the balance position, if the balance position is bypassed and the position is reciprocatingly adjusted near the balance position, it is difficult to adjust the pendulum to the balance position, resulting in failure to complete the zero adjustment. In this embodiment, accurate zero adjustment can be ensured by adopting an adaptive zero adjustment process in which coarse adjustment is performed first and then fine adjustment is performed.

In the embodiment of the present invention, for the coarse adjustment process, the coarse adjustment module is used to determine the first deviation distance between the current position of the pendulum body and the equilibrium position according to the digital position signal, and determine the coarse adjustment control signal according to the first deviation distance. For the fine adjustment process, the fine adjustment module is used for determining the second deviation position between the current position of the pendulum body and the equilibrium position according to the digital position signal, and determining the fine adjustment control signal according to the second deviation distance.

Optionally, the drive unit 2 is a DC motor, and the control signal is the time used to control the rotation of the DC motor. For the coarse adjustment process, the first time for controlling the rotation of the DC motor in the coarse adjustment control signal is calculated according to the first deviation distance, and the DC motor rotates for the first time according to the coarse adjustment control signal to drive the zero adjustment reed 9 to drive the pendulum to perform coarse Adjustment action; in some embodiments, the calculation method of the first time t1 is:

t1=A1×K

Among them, A1 is the first deviation distance, and K is the zero adjustment coefficient;

K=B/(S×V)

Among them, B is the zero adjustment transmission ratio, which is equal to the distance moved by the zero adjustment screw 15 divided by the distance moved by the fixed pole plate 13 when the DC motor rotates for 1 second; S is the displacement sensitivity of the capacitor fixed plate 13, which is the capacitance fixed plate 13 The voltage value of 1 mm of displacement change; V is the moving speed of the zero-adjusting screw 15, which is the distance that the zero-adjusting screw 15 moves when the DC motor rotates for 1 second.

For the fine adjustment process, the second time for controlling the rotation of the DC motor in the fine adjustment control signal is calculated according to the second deviation distance, and the DC motor rotates for the second time according to the fine adjustment control signal to drive the zero adjustment reed 9 to drive the pendulum body to perform fine adjustment. Adjust the action. In some embodiments, the calculation method of the first time t2 is:

t2=A2×K`

Among them, A2 is the second deviation distance, K` is the correction value of the zero adjustment coefficient K, due to the extremely small range of the balance position, the theoretically calculated zero adjustment coefficient K has deviations. The actual test value is obtained, and the zero-adjustment coefficient K is corrected by using the test value to obtain the corrected zero-adjustment coefficient K'. In this way, based on the corrected zero-adjustment coefficient K', the fine adjustment accuracy can be improved.

In this embodiment, after the fine adjustment, when it is determined that the pendulum is within the range of the equilibrium position, the zero adjustment is completed, and the processing unit includes:

The position judgment module is used to judge whether the pendulum is within the range of the equilibrium position according to the digital position signal;

The stop adjustment module is used to determine the stop control signal when it is judged that the pendulum body is within the range of the equilibrium position.

As shown in Figure 5, ideally, it is desirable to adjust the position of the pendulum body to the absolute equilibrium position. However, due to the influence of multiple factors such as instrument accuracy and operating environment temperature, it is often difficult to ensure that the pendulum body position is adjusted to the absolute equilibrium position. In this embodiment, the first equilibrium position and the second equilibrium position with a slight gap (generally less than 10 nm) between the setting and the absolute equilibrium position are set. When the pendulum body is adjusted to be between the first equilibrium position and the second equilibrium position When it is within the range of the equilibrium position, it is considered that the pendulum has reached the equilibrium position and has reached the zero position. At this time, the drive unit 2 is controlled to stop and complete the zero adjustment.

In this embodiment, since the deep well seismometer is installed in a deep well, the volume is small, and the distance between the casing of the seismometer and the pendulum is limited. During the zero adjustment process, in order to prevent the mechanical parts from touching the casing, the driving unit If it is damaged or other components are damaged, a zero adjustment limit protection circuit is added, and the signal output end of the zero adjustment limit protection circuit is connected with the signal input end of the control unit.

In some embodiments, the zero adjustment limit circuit is arranged on the transmission mechanism. During the zero adjustment, when the transmission mechanism contacts the casing of the seismometer, the zero adjustment limit circuit sends a limit signal to the control unit, so that the control unit sends a limit signal to the control unit. The drive unit 2 sends a control signal for reverse action. Optionally, the zero adjustment limit protection circuit is arranged at the left and right ends of the zero adjustment screw 15 along the left and right movement directions. During the zero adjustment process, when the left or right end of the zero adjustment screw 15 contacts the housing, the zero adjustment limit The bit protection circuit sends a limit signal to the control unit, the control unit receives the limit signal, and sends a control signal of reverse action to the drive unit 2, and the drive unit 2 acts in the reverse direction according to the control signal, and drives the zero adjustment screw 15 to move in the reverse direction, away from the housing, thus avoiding component damage and improving device reliability.

The zero-adjusting device of the deep-well seismometer in the embodiment of this specification is provided with a zero-adjusting device on each pendulum body of the deep-well seismometer; The deformation of the sheet 9 changes the force of the pendulum body, which can drive the pendulum body to move to the zero position. During the zero adjustment process, the overall installation posture of the pendulum body remains unchanged, and the zero adjustment range that can be achieved is 5 degrees, and the zero adjustment range is large. , which can be applied to the zero adjustment of deep well seismometers; at the same time, the zero adjustment device can realize automatic self-adaptive and high-precision zero adjustment through the zero position detection unit and the control unit, and ensure the reliability of the device.

It should be understood by those of ordinary skill in the art that the discussion of any of the above embodiments is only exemplary, and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples; under the spirit of this specification, the above embodiments or There may also be combinations between technical features in different embodiments, steps may be carried out in any order, and there are many other variations of the different aspects of this specification as described above, which are not provided in detail for the sake of brevity.

The embodiments of this specification are intended to cover all such alternatives, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of this specification shall be included within the protection scope of this specification.

Claims (10)

1. a zero-adjusting device of a deep well seismometer, the deep well seismometer comprises a three-way pendulum body, and each pendulum body comprises a pendulum body support and a pendulum, and the bottom of the pendulum body support is connected with the pendulum through a cross reed, and it is characterized in that: That is, the zero adjustment device includes: a drive unit, a transmission mechanism and a zero adjustment reed; The power end of the driving unit is connected with one end of the zero-adjusting reed through the transmission mechanism, and the other end of the zero-adjusting reed is connected with the pendulum; When the driving unit moves, the zero-adjusting reed is driven to deform by the transmission mechanism, and the zero-adjusting reed drives the pendulum to move to the zero position. 2. The zero-adjustment device according to claim 1, wherein the transmission mechanism comprises a turbine, a vortex rod, a zero-adjustment screw, a zero-adjustment lever, a zero-adjustment lever, and a zero-adjustment shaft, and the power of the drive unit The end is connected with the zero-adjustment reed through the vortex rod, the turbine, the zero-adjustment screw, the zero-adjustment lever, the zero-adjustment lever, and the zero-adjustment rotating shaft. 3 . The zero-adjusting device according to claim 2 , wherein the zero-adjusting reed is a curved spring plate with elastic force, and one end of the zero-adjusting reed is connected with the zero-adjusting shaft, 3 . The other end of the zero-adjusting reed is connected to the pendulum, and the zero-adjusting reed can be forced to drive the pendulum to swing with the cross reed as an axis, and can achieve a zero-adjustment range of 5 degrees. 4. The zero-adjusting device according to claim 1, wherein the device further comprises: a zero position detection unit for detecting the position signal of the pendulum body; a control unit, configured to determine a control signal for controlling the action of the drive unit according to the position signal; the control unit includes: an analog-to-digital conversion circuit for converting the position signal into a digital position signal; The processing unit is configured to determine a control signal for controlling the action of the driving unit according to the digital position signal. 5. The zero adjustment device according to claim 4, wherein the processing unit comprises: a position judging module for judging whether the pendulum body is within the coarse adjustment position range according to the digital position signal; The coarse adjustment module is configured to determine the coarse adjustment control signal when it is judged that the pendulum body is within the coarse adjustment position range. 6. The zero-adjusting device according to claim 5, characterized in that, The coarse adjustment module is configured to determine a first deviation distance between the current position of the pendulum body and the equilibrium position according to the digital position signal, and determine the coarse adjustment control signal according to the first deviation distance. 7. The zero adjustment device according to claim 4, wherein the processing unit comprises: a position judging module for judging whether the pendulum body is within the fine adjustment position range according to the digital position signal; The fine adjustment module is used for determining the fine adjustment control signal when it is judged that the pendulum body is within the fine adjustment position range. 8. The zero-adjusting device according to claim 7, characterized in that, The fine adjustment module is used for determining the second deviation position between the current position of the pendulum body and the equilibrium position according to the digital position signal, and determining the fine adjustment control signal according to the second deviation distance. 9. The zero adjustment device according to claim 4, wherein the processing unit comprises: a position judging module for judging whether the pendulum body is within the range of the equilibrium position according to the digital position signal; The stop adjustment module is used for determining the stop control signal when it is judged that the pendulum body is within the range of the equilibrium position. 10. The zero-adjusting device according to claim 4, further comprising: The zero-adjustment limit circuit is arranged on the transmission mechanism. During the zero-adjustment process, when the transmission mechanism contacts the casing of the seismometer, the zero-adjustment limit circuit sends a limit signal to the control unit to causing the control unit to send a control signal for reverse action to the drive unit.

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