CN111399081A - Zero setting device of deep well seismometer - Google Patents
Zero setting device of deep well seismometer Download PDFInfo
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- CN111399081A CN111399081A CN202010378221.8A CN202010378221A CN111399081A CN 111399081 A CN111399081 A CN 111399081A CN 202010378221 A CN202010378221 A CN 202010378221A CN 111399081 A CN111399081 A CN 111399081A
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Abstract
This specification provides a zero set device of deep well seismometer, deep well seismometer includes the tripartite pendulum body, and every pendulum body includes pendulum body support and pendulum, and pendulum body support bottom is connected with the pendulum through the cross reed, and the zero set device includes: the device comprises a driving unit, a transmission mechanism and a zero setting reed; the power end of the driving unit is connected with one end of the zero setting reed through the transmission mechanism, and the other end of the zero setting reed is connected with the pendulum bob; the driving unit acts, the transmission mechanism drives the zero setting reed to deform, and the zero setting reed drives the pendulum bob to move to a zero position. The zero setting of the deep well seismometer can be realized.
Description
Technical Field
The specification relates to the technical field of seismic observation, in particular to a zero setting device of a deep well seismometer.
Background
The deep well seismometer is a precise observation instrument for deep well observation, and can obtain excellent observation data due to the environmental advantages of small observation environment noise, small interference and the like. The deep well seismometer needs to be zeroed first after being installed in a deep well so as to ensure a normal working state. In order to realize zero setting of the deep well seismometer, the installation condition of the deep well needs to be fully considered, on one hand, the deep well seismometer has well deviation under the deep well, and the deep well seismometer is required to have a larger zero setting range, on the other hand, the underground space is very small, the movable range of the deep well seismometer is very small, zero setting cannot be realized by adjusting the integral installation posture of the pendulum, and on the third hand, the deep well seismometer needs to have an automatic zero setting function.
Disclosure of Invention
In view of this, an object of the present disclosure is to provide a zero setting device for a deep well seismometer, which can implement a zero setting function of the deep well seismometer.
In view of the above, one or more embodiments of the present specification provide a zero setting device for a deep well seismometer, the deep well seismometer includes a tripartite pendulum, each pendulum includes a pendulum support and a pendulum bob, the bottom of the pendulum support is connected to the pendulum bob through a cross spring, the zero setting device includes: the device comprises a driving unit, a transmission mechanism and a zero setting reed;
the power end of the driving unit is connected with one end of the zero setting reed through the transmission mechanism, and the other end of the zero setting reed is connected with the pendulum bob;
the driving unit acts, the transmission mechanism drives the zero setting reed to deform, and the zero setting reed drives the pendulum bob to move to a zero position.
Optionally, the transmission mechanism includes a turbine, a scroll, a zero adjusting screw, a zero adjusting lever, a zero adjusting deflector rod, and a zero adjusting rotating shaft, and the power end of the driving unit is connected to the zero adjusting reed through the scroll, the turbine, the zero adjusting screw, the zero adjusting lever, the zero adjusting deflector rod, and the zero adjusting rotating shaft.
Optionally, the zero setting reed is a bent spring piece with elastic force, one end of the zero setting reed is connected with the zero setting rotating shaft, the other end of the zero setting reed is connected with the pendulum bob, the zero setting reed can be stressed to drive the pendulum bob to swing by taking the cross reed as a shaft, and the zero setting range of 5 degrees can be realized.
Optionally, the apparatus further comprises:
the zero position detection unit is used for detecting a position signal of the pendulum body;
the control unit is used for determining a control signal for controlling the action of the driving unit according to the position signal; the control unit includes:
an analog-to-digital conversion circuit for converting the position signal to a digital position signal;
and the processing unit is used for determining a control signal for controlling the action of the driving unit according to the digital position signal.
Optionally, the processing unit includes:
the position judging module is used for judging whether the pendulum body is in a coarse adjustment position range or not according to the digital position signal;
and the coarse adjustment module is used for determining a coarse adjustment control signal when the pendulum body is judged to be within the coarse adjustment position range.
Optionally, the coarse tuning 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 tuning control signal according to the first deviation distance.
Optionally, the processing unit includes:
the position judging module is used for judging whether the pendulum body is in the fine adjustment position range or not according to the digital position signal;
and the fine adjustment module is used for determining a fine adjustment control signal when the pendulum body is judged to be in the fine adjustment position range.
Optionally, the fine adjustment module is configured to determine a second deviation position between the current position and the balance position of the pendulum body according to the digital position signal, and determine the fine adjustment control signal according to the second deviation distance.
Optionally, the processing unit includes:
the position judging module is used for judging whether the pendulum body is in a balance position range or not according to the digital position signal;
and the stopping adjustment module is used for determining a stopping control signal when the pendulum body is judged to be in the balance position range.
Optionally, the zero setting device further includes:
and the zero setting limiting circuit is arranged on the transmission mechanism, and in the zero setting process, when the transmission mechanism contacts the shell of the seismometer, the zero setting limiting circuit sends a limiting signal to the control unit so that the control unit sends a control signal of reverse action to the driving unit.
From the above, the zero setting device of the deep well seismometer provided by the specification comprises a driving unit, a transmission mechanism and a zero setting reed, wherein the power end of the driving unit is connected with one end of the zero setting reed through the transmission mechanism, and the other end of the zero setting reed is connected with a pendulum bob; the driving unit acts, the zero setting reed is driven to deform through the transmission mechanism, and the zero setting reed drives the pendulum bob to move to a zero position; the zero setting device of this embodiment need not to adjust the whole installation gesture of pendulum body, can zero in the zero setting within range of 5 degrees, can realize the zero setting function of deep well seismometer.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present specification, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of an apparatus according to an embodiment of the present disclosure;
FIG. 2 is a cross-sectional view of an apparatus according to an embodiment of the present disclosure;
FIG. 3 is a schematic perspective view of an apparatus according to an embodiment of the present disclosure;
fig. 4 is a block diagram of a control unit according to an embodiment of the present disclosure;
fig. 5 is a simplified pendulum position diagram of an embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present specification more apparent, the present specification is further described in detail below with reference to the accompanying drawings in combination with specific embodiments.
It should be noted that technical terms or scientific terms used in the embodiments of the present specification should have a general meaning as understood by those having ordinary skill in the art to which the present disclosure belongs, unless otherwise defined. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In some modes, some seismometers can realize zero adjustment through a manual adjustment mode, the manual zero adjustment mode is suitable for application occasions where the installation position is convenient for manual operation, and the zero adjustment range is about 0.1 degree; some seismometers can realize automatic zero setting, and have a large zero setting range (for example, the zero setting range is 2-3 degrees), however, the large zero setting range is generally realized by adjusting the overall installation posture of the pendulum body, and the seismometer is suitable for application occasions where the installation position space is large and the pendulum body has a large movement space. However, the deep well seismometer is generally installed in the well for 500 meters or less, and is limited by installation conditions, the total volume of the deep well seismometer is small, the underground activity space is small, zero setting cannot be realized by adjusting the integral installation posture of the pendulum body, and the deep well seismometer is required to have a large zero setting range due to the fact that well deviation exists in the well, and an automatic zero setting function is required.
In order to solve the above problems, the present specification provides a zero setting device for a deep well seismometer, which includes a driving unit, a transmission mechanism, and a zero setting reed, wherein the driving unit acts to drive the zero setting reed to deform through the transmission mechanism, the zero setting reed drives a pendulum bob of a pendulum body to move to a zero position, zero setting is realized, the overall installation posture of the pendulum body does not need to be adjusted, the adjustable range is large, and zero setting of the deep well seismometer can be realized.
The present specification will be described in detail with reference to examples.
As shown in fig. 1 to 3, the zero setting device for a deep well seismometer provided by the present specification is suitable for a deep well seismometer, the deep well seismometer includes an east-west pendulum, a north-south pendulum and a vertical pendulum, the three-direction pendulum is fixedly mounted on a base, any pendulum includes a pendulum support 14 and a pendulum 11, the bottom of the pendulum support 14 is connected with the pendulum 11 through a cross spring 10, and the seismometer senses ground motion through free motion of the pendulum 11 around the cross spring 10.
Each pendulum body is provided with a zero setting device, each zero setting device comprises a driving unit 2, a transmission mechanism and a zero setting reed 9, the power end of the driving unit 2 is connected with one end of the zero setting reed 9 through the transmission mechanism, and the other end of the zero setting reed 9 is connected with a pendulum bob 11;
the driving unit 2 acts, the zero setting reed 9 is driven to deform through the transmission mechanism, and the zero setting reed 9 drives the pendulum bob 11 to move to the zero position.
In this embodiment, a zero setting device is arranged on each pendulum body of the deep well seismometer, and the driving unit 2 is connected with a pendulum bob 11 of the pendulum body through a transmission mechanism and a zero setting reed 9. The driving unit 2 receiving the zeroing instruction acts to drive the transmission mechanism to act, the transmission mechanism acts to enable the zeroing reed 9 to deform, the zeroing reed 9 drives the pendulum bob 11 to move to a zero position, at the moment, the driving unit 2 receiving the stopping instruction stops acting, and the pendulum body completes zeroing; the three pendulums of the deep well seismometer are all zeroed by respective zeroing devices, and the deep well seismometer is zeroed. The zero setting device of this embodiment drives pendulum 11 through zero setting reed 9 and moves to the zero position, and the whole installation gesture of pendulum is unchangeable, and the pendulum does not change for the position of seismometer casing, and the zero setting scope that can realize is 5 degrees, and the zero setting scope is great, can be applicable to the zero setting of deep well seismometer.
As shown in the figure, in this embodiment, the transmission mechanism includes a turbine 3, a scroll 4, a zero setting screw 15, a zero setting lever 6, a zero setting shift lever 7, and a zero setting rotary shaft 8, and the power end of the driving unit 2 is connected to the zero setting reed 9 through the scroll 4, the scroll 3, the zero setting screw 15, the zero setting lever 6, the zero setting shift lever 7, and the zero setting rotary shaft 8. Specifically, the driving unit 2, the turbine 3, the worm 4 and the zero setting screw 15 are fixed on the pendulum support 14 through the base 1, the zero setting screw 15 can move left and right along the base 1 under the driving of the turbine 3, one end of the zero setting screw 15 is movably connected with one end of the zero setting lever 6 through a pin shaft 151, the other end of the zero setting lever 6 is movably connected with one end of the zero setting shifting fork 7, the other end of the zero setting shifting fork 7 is connected with one end of the zero setting rotating shaft 8 through a connecting shaft 71, the other end of the zero setting rotating shaft 8 is connected with one end of a zero setting reed 9, the zero setting lever 6 is connected with the pendulum support 14 through a rotating shaft 5, and the zero setting lever 6 can rotate around the rotating shaft 5; the drive unit 2 acts, the worm 4 drives the turbine 3 to rotate, the turbine 3 drives the zero setting screw 15 to move left and right, one end of the zero setting lever 6 moves left and right along with the zero setting screw 5 and rotates by taking the rotating shaft 5 as a center, the other end of the zero setting lever 6 drives the zero setting shifting fork 7 to rotate by the connecting shaft 71, the zero setting shifting fork 7 rotates to drive the zero setting rotating shaft 8 to rotate, the zero setting rotating shaft 8 rotates to drive the zero setting reed 9 to deform, the force of the zero setting reed 9 on the pendulum bob 11 changes, and the pendulum bob 11 swings by taking the cross reed 10 as a shaft. Alternatively, the driving unit may be a motor or the like capable of providing a driving force.
In some embodiments, the zero setting reed 9 is a curved spring piece with elastic force, one end of the zero setting reed 9 is connected with the zero setting rotating shaft 8, the other end of the zero setting reed 9 is connected with the pendulum bob 11, when the zero setting rotating shaft 8 rotates, the bending degree of the zero setting reed 9 changes, the zero setting reed 9 generates acting force on the pendulum bob 11, the pendulum bob 11 swings with the cross reed 10 as an axis under the acting force of the zero setting reed 9, when the pendulum bob 11 swings to the zero position, the zero setting rotating shaft 8 stops rotating, and the pendulum bob 11 adjusts to the zero position. The zero setting range of plus and minus 5 degrees (5 degrees inclined in a first direction and 5 degrees inclined in a second direction opposite to the first direction by using a horizontal plane as a reference plane) can be realized by adjusting the swing position of the pendulum bob 11 by the zero setting reed 9, and the zero setting reed can be applied to deep wells with well inclination within a certain degree.
In some embodiments, the zero setting device of the deep well seismometer further comprises:
the zero position detection unit is used for detecting a position signal of the pendulum body;
and the control unit is used for determining a control signal for controlling the action of the driving unit 2 according to the position signal.
In this embodiment, the zeroing device further includes a zero detection unit and a control unit, a signal output end of the zero detection unit is connected to a signal input end of the control unit, and a control signal output end of the control unit is connected to a control end of the driving unit 2. When the control unit judges that the pendulum body is in a non-zero state according to the position signal of the zero position detection unit, the control unit sends a zero setting instruction to the drive unit 2 to control the drive unit 2 to act, the drive unit 2 drives the transmission mechanism to act, the zero setting reed 9 generates elastic deformation under stress, the zero setting reed 9 drives the pendulum bob 11 to swing around the cross reed 10, and in the swinging process of the pendulum bob 11, when the pendulum body is judged to be in the zero position state according to the position signal of the zero position detection unit, the control unit sends a stop instruction to the drive unit 2 to control the drive unit 2 to stop acting, and zero setting of the pendulum body is completed.
As shown in the drawings, in some embodiments, the pendulum 11 of the pendulum body is provided with a first capacitor moving plate 121 and a second capacitor moving plate 122, and the pendulum body bracket is provided with a capacitor fixed plate 13; the zero position detection unit is a capacitance displacement detection circuit, the capacitance displacement detection circuit detects a capacitance value C1 between the capacitance fixed plate 13 and the first capacitance movable plate 121 and a capacitance value C2 between the capacitance fixed plate 13 and the second capacitance movable plate 122, and the control unit judges whether the pendulum body is in a zero position state according to a position signal detected by the capacitance displacement detection circuit. For example, when the capacitance displacement detection circuit detects that C1 ≠ C2, it is determined that the pendulum is in a non-zero state, and the control unit sends a zeroing instruction to the drive unit 2; when the capacitance displacement detection circuit detects that C1 is equal to C2, the pendulum body is judged to be in a zero position state, and the control unit sends a stop instruction to the driving unit 2 to complete zero setting. Thus, the zero setting device of the embodiment can realize automatic zero setting of the pendulum body.
In the embodiment, the zero setting device of the deep well seismometer can realize self-adaptive high-precision zero setting. As shown in fig. 4, the control unit includes:
the analog-to-digital conversion circuit is used for converting the position signal detected by the zero position detection unit into a digital position signal;
and the processing unit is used for determining a control signal for controlling the action of the driving unit 2 according to the digital position signal.
In the embodiment, the adaptive zeroing process of the zeroing device is that the zeroing detection unit detects a position signal of the pendulum body and transmits the detected position signal to the analog-to-digital conversion unit, the analog-to-digital conversion unit performs analog-to-digital conversion on the position signal and transmits a converted digital position signal to the processing unit, the processing unit judges whether the pendulum body reaches a balance position according to the received digital position signal, if the pendulum body does not reach the balance position, the processing unit sends a zeroing control signal to the driving unit 2, and the driving unit 2 performs zeroing action according to the received zeroing control signal; if the balance position is reached, the processing unit sends a stop control signal to the driving unit 2, the driving unit 2 receives the stop control signal and stops acting, and the seismometer pendulum body completes zero setting and can work normally. The zero setting device of the deep well seismometer of the embodiment can realize automatic zero setting of the pendulum body, is convenient to use, and is suitable for underground use.
In this embodiment, because the seismometer belongs to a precision instrument, and the zero adjustment precision directly affects the detection precision of the seismometer, the present embodiment adopts a mode of coarse adjustment first and fine adjustment later to perform precise zero adjustment on the pendulum. For a coarse tuning process, the processing unit comprises:
the position judging module is used for judging whether the pendulum body is in the coarse adjustment position range or not according to the digital position signal;
and the coarse adjustment module is used for determining a coarse adjustment control signal when the pendulum body is judged to be within the coarse adjustment position range.
As shown in fig. 5, the pendulum body can swing between a first limit position and a second limit position, when the pendulum body is determined to be located within a coarse adjustment position range between the first limit position and a first coarse adjustment position or within a coarse adjustment position range between the second limit position and a second coarse adjustment position according to a position signal detected by the zero position detection unit, the position of the pendulum body is coarsely adjusted, the processing unit transmits a determined coarse adjustment control signal to the driving unit 2, the driving unit 2 performs a coarse adjustment action according to the coarse adjustment control signal, and after the coarse adjustment, the position of the pendulum body is adjusted to be within the fine adjustment position range.
For the fine-tuning process, the processing unit comprises:
the position judging module is used for judging whether the pendulum body is in the fine adjustment position range or not according to the digital position signal;
and the fine adjustment module is used for determining a fine adjustment control signal when the pendulum body is judged to be within the fine adjustment position range.
As shown in fig. 5, after the coarse adjustment, the pendulum body is located within a fine adjustment position range between the first coarse adjustment position and the first balance position, or located within a fine adjustment position range between the second coarse adjustment position and the second balance position, at this time, the pendulum body position needs to be fine adjusted, the processing unit transmits the determined fine adjustment control signal to the driving unit 2, the driving unit 2 performs a fine adjustment action according to the fine adjustment control signal, and after the fine adjustment, the pendulum body position can be adjusted within the balance position range.
In this embodiment, the coarse position range is greater than the fine position range, and the coarse control signal is different from the fine control signal. Because the seismometer belongs to a precise instrument, zero setting must be precise to ensure the detection precision of the seismometer, if the same control signal is used for controlling the action of the leveling driving unit, after the pendulum body reaches a fine adjustment position range (an extremely tiny distance range), the pendulum body is easy to bypass the balance position and deviate from the balance position, and if the pendulum body bypasses the balance position and reciprocates to adjust the position near the balance position, the pendulum body is difficult to adjust to the balance position, so that zero setting cannot be completed. In this embodiment, the adaptive zeroing process of first performing coarse tuning and then performing fine tuning is adopted, so that accurate zeroing can be ensured.
In the embodiment of the invention, for the coarse adjustment process, the coarse adjustment module is used for determining a first deviation distance between the current position and the balance position of the pendulum body according to the digital position signal and determining a coarse adjustment control signal according to the first deviation distance. For the fine adjustment process, the fine adjustment module is used for determining a second deviation position between the current position and the balance position of the pendulum body according to the digital position signal and determining a fine adjustment control signal according to the second deviation distance.
Optionally, the driving unit 2 is a dc motor, and the control signal is a time for controlling the rotation of the dc motor. For the coarse adjustment process, the first time for controlling the direct current motor to rotate in the coarse adjustment control signal is calculated according to the first deviation distance, and the direct current motor rotates for the first time according to the coarse adjustment control signal so as to drive the zero adjustment reed 9 to drive the pendulum body to execute the coarse adjustment action; in some embodiments, the first time t1 is calculated by:
t1＝A1×K
wherein, A1 is a first deviation distance, and K is a zeroing coefficient;
K＝B/(S×V)
wherein, B is the zero setting transmission ratio which is equal to the distance moved by the zero setting screw 15 divided by the distance moved by the fixed pole plate 13 when the direct current motor rotates for 1 second; s is the displacement sensitivity of the capacitance fixed plate 13, which is the voltage value of 1 mm of displacement change of the capacitance fixed plate 13; v is the moving speed of the zero set screw 15, which is the distance the zero set screw 15 moves when the dc motor rotates for 1 second.
For the fine adjustment process, the second time for controlling the direct current motor to rotate in the fine adjustment control signal is calculated according to the second deviation distance, and the direct current motor rotates for the second time according to the fine adjustment control signal so as to drive the zero setting reed 9 to drive the pendulum body to execute the fine adjustment action. In some embodiments, the first time t2 is calculated by:
t2＝A2×K`
wherein, a2 is the second deviation distance, K ' is the corrected value of the zeroing coefficient K, since the balance position range is extremely small, the zeroing coefficient K obtained by theoretical calculation has deviation, in order to ensure the fine tuning precision, an actual test value is obtained through a plurality of test tests, and the zeroing coefficient K is corrected by using the test value to obtain the corrected zeroing coefficient K ', so that the fine tuning precision can be improved based on the corrected zeroing coefficient K '.
In this embodiment, after the fine adjustment, when it is determined that the pendulum is within the balance position range, the zero adjustment is completed, and the processing unit includes:
the position judging module is used for judging whether the pendulum body is in the balance position range or not according to the digital position signal;
and the stopping adjustment module is used for determining a stopping control signal when the pendulum body is judged to be in the balance position range.
As shown in fig. 5, ideally, it is desirable to adjust the pendulum position to the absolute equilibrium position, however, it is often difficult to ensure the adjustment of the pendulum position to the absolute equilibrium position due to the influence of multiple factors such as the accuracy of the instrument and the temperature of the use environment. In this embodiment, a first balance position and a second balance position having a small difference (generally less than 10nm) from the absolute balance position are set, and when the pendulum position is adjusted to be within the balance position range between the first balance position and the second balance position, it is determined that the pendulum has reached the balance position and reached the zero position state, and at this time, the driving unit 2 is controlled to stop operating, and zero adjustment is completed.
In the embodiment, because the deep well seismometer is installed in a deep well, the size is small, the distance between the shell of the seismometer and the pendulum body is limited, and in the zeroing process, in order to prevent mechanical parts from touching the shell, the driving unit or other components are damaged, a zeroing limiting protection circuit is additionally arranged, and the signal output end of the zeroing limiting protection circuit is connected with the signal input end of the control unit.
In some embodiments, the zero setting limit circuit is disposed on the transmission mechanism, and during the zero setting process, when the transmission mechanism contacts the shell of the seismometer, the zero setting limit circuit sends a limit signal to the control unit, so that the control unit sends a control signal of a reverse action to the driving unit 2. Optionally, the zero-setting limit protection circuit is arranged at the left end and the right end of the zero-setting screw 15 in the left-right moving direction, in the zero-setting process, when the left end or the right end of the zero-setting screw 15 is in contact with the shell, the zero-setting limit protection circuit sends a limit signal to the control unit, the control unit receives the limit signal, the control unit sends a control signal of reverse action to the driving unit 2, the driving unit 2 reversely acts according to the control signal, the zero-setting screw 15 is driven to reversely move, the shell is kept away from, therefore, damage to components is avoided, and reliability of the device is improved.
In the zero setting device of the deep well seismometer in the embodiment of the specification, the zero setting device is arranged on each pendulum body of the deep well seismometer, the driving unit acts, the pendulum body can be driven to act through the transmission mechanism and the zero setting reed 9, the force of the pendulum body caused by the deformation of the zero setting reed 9 is changed, the pendulum body can be driven to move to a zero position, the integral installation posture of the pendulum body is unchanged in the zero setting process, the zero setting range which can be realized is 5 degrees, the zero setting range is larger, and the zero setting device can be suitable for the zero setting of the deep well seismometer; meanwhile, the zero setting device can realize automatic self-adaption and high-precision zero setting through the zero detection unit and the control unit, and the reliability of the device is ensured.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the context of this description, features in the above embodiments or in different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of the different aspects of this description as described above, which are not provided in detail for the sake of brevity.
The embodiments of the present description are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalents, improvements, and the like that may be made within the spirit and principles of the disclosure are intended to be included within the scope of the disclosure.
Claims (10)
1. The utility model provides a deep well seismometer's zero-setting device, deep well seismometer include the trisection pendulum body, and every pendulum body includes pendulum body support and pendulum, and pendulum body support bottom is connected with the pendulum through the cross reed, and its characterized in that, zero-setting device includes: the device comprises a driving unit, a transmission mechanism and a zero setting reed;
the power end of the driving unit is connected with one end of the zero setting reed through the transmission mechanism, and the other end of the zero setting reed is connected with the pendulum bob;
the driving unit acts, the transmission mechanism drives the zero setting reed to deform, and the zero setting reed drives the pendulum bob to move to a zero position.
2. The zeroing device according to claim 1, wherein the transmission mechanism comprises a worm gear, a zeroing screw, a zeroing lever, a zeroing deflector rod and a zeroing rotating shaft, and the power end of the driving unit is connected with the zeroing reed through the worm gear, the zeroing screw, the zeroing lever, the zeroing deflector rod and the zeroing rotating shaft.
3. The zero setting device of claim 2, wherein the zero setting reed is a curved spring piece with elastic force, one end of the zero setting reed is connected with the zero setting rotating shaft, the other end of the zero setting reed is connected with the pendulum bob, and the zero setting reed can drive the pendulum bob to swing around the cross reed as an axis under the force of the zero setting reed, so that a zero setting range of 5 degrees can be realized.
4. The zeroing device of claim 1, further comprising:
the zero position detection unit is used for detecting a position signal of the pendulum body;
the control unit is used for determining a control signal for controlling the action of the driving unit according to the position signal; the control unit includes:
an analog-to-digital conversion circuit for converting the position signal to a digital position signal;
and the processing unit is used for determining a control signal for controlling the action of the driving unit according to the digital position signal.
5. The zeroing apparatus of claim 4, wherein the processing unit comprises:
the position judging module is used for judging whether the pendulum body is in a coarse adjustment position range or not according to the digital position signal;
and the coarse adjustment module is used for determining a coarse adjustment control signal when the pendulum body is judged to be within the coarse adjustment position range.
6. The zero setting apparatus according to claim 5,
and the coarse adjustment module is used for determining a first deviation distance between the current position and the balance position of the pendulum body according to the digital position signal and determining the coarse adjustment control signal according to the first deviation distance.
7. The zeroing apparatus of claim 4, wherein the processing unit comprises:
the position judging module is used for judging whether the pendulum body is in the fine adjustment position range or not according to the digital position signal;
and the fine adjustment module is used for determining a fine adjustment control signal when the pendulum body is judged to be in the fine adjustment position range.
8. The zero setting apparatus according to claim 7,
and the fine adjustment module is used for determining a second deviation position between the current position and the balance position of the pendulum body according to the digital position signal and determining the fine adjustment control signal according to the second deviation distance.
9. The zeroing apparatus of claim 4, wherein the processing unit comprises:
the position judging module is used for judging whether the pendulum body is in a balance position range or not according to the digital position signal;
and the stopping adjustment module is used for determining a stopping control signal when the pendulum body is judged to be in the balance position range.
10. The zeroing device according to claim 4, further comprising:
and the zero setting limiting circuit is arranged on the transmission mechanism, and in the zero setting process, when the transmission mechanism contacts the shell of the seismometer, the zero setting limiting circuit sends a limiting signal to the control unit so that the control unit sends a control signal of reverse action to the driving unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010378221.8A CN111399081A (en) | 2020-05-07 | 2020-05-07 | Zero setting device of deep well seismometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010378221.8A CN111399081A (en) | 2020-05-07 | 2020-05-07 | Zero setting device of deep well seismometer |
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| CN111399081A true CN111399081A (en) | 2020-07-10 |
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| CN202010378221.8A Pending CN111399081A (en) | 2020-05-07 | 2020-05-07 | Zero setting device of deep well seismometer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114200515A (en) * | 2021-12-15 | 2022-03-18 | 浙江大学 | Device and method for adjusting inherent period of seismic picking system of broadband seismometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200515A (en) * | 2021-12-15 | 2022-03-18 | 浙江大学 | Device and method for adjusting inherent period of seismic picking system of broadband seismometer |
| CN114200515B (en) * | 2021-12-15 | 2022-08-23 | 浙江大学 | Device and method for adjusting inherent period of seismic picking system of broadband seismometer |
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