Earthquake sensor

Abstract

The utility model provides an earthquake sensor, which relates to the technical field of multi-disaster detection and comprises a shell, a sensor assembly fixedly connected with the shell, a moving part and a boss. The moving part and the boss are arranged in a sealing cavity in the shell; the boss is provided with an initial position for placing the moving part, and the bottom of the sealing cavity is provided with an induction position lower than the initial position; when vibration is generated, the moving part can fall to the sensing position from the initial position; the sensor assembly is used for identifying whether the moving part exists in the sensing position or not and transmitting identification information to the controller; and a buzzer and a warning lamp which are respectively connected with the controller are arranged outside the shell. According to the earthquake sensor, the arrangement is firmer, the initial position and the sensing position of the moving part are not displaced, when an earthquake occurs, the moving part can accurately reach the sensing position under the action of the gravity of the moving part, and the sensor assembly can more accurately recognize the moving part and feed back the earthquake condition.

Description

Technical Field

[0001] The utility model relates to the technical field of disaster detection, and particularly relates to an earthquake sensor. Background Art

[0002] At present, an earthquake, also known as ground motion or ground vibration, is a natural phenomenon that causes vibration during the rapid release of energy in the earth's crust, during which seismic waves will be generated. During an earthquake, the most basic phenomenon is the continuous vibration of the ground, and the main feature is obvious shaking.

[0003] In the prior art, earthquake sensors mainly rely on the hanging pendulum principle and use inertia to sense earthquakes. A plumb bob or a single pendulum ball is suspended on a hanger by a pendulum wire. When an earthquake occurs, the plumb bob or the single pendulum ball shakes and hits a pressure sensor, and the pressure sensor transmits a signal to a controller, thereby identifying that an earthquake has occurred.

[0004] However, the earthquake sensors in the prior art are not firmly installed. The pendulum wire may become loose, resulting in the displacement of the suspension point, and the plumb bob or the single pendulum ball cannot touch the pressure sensor, resulting in the inability to accurately identify earthquake signals. Content of the Utility Model

[0005] The purpose of the utility model is to provide an earthquake sensor to alleviate the technical problem that in the prior art, the earthquake sensor is not firmly installed, the pendulum wire may become loose, resulting in the displacement of the suspension point, and the plumb bob or the single pendulum ball cannot touch the pressure sensor, resulting in the inability to accurately identify earthquake signals.

[0006] The earthquake sensor provided by the utility model includes a housing, a sensor assembly fixedly connected to the housing, a moving member, and a convex platform; the moving member and the convex platform are both arranged in a sealed cavity inside the housing; a starting position for placing the moving member is arranged on the convex platform, and an induction position lower than the starting position is arranged at the bottom of the sealed cavity; the sensor assembly includes a displacement sensor and a pressure sensor; the displacement sensor is correspondingly arranged with the induction position, and the pressure sensor is arranged at the induction position; when vibration occurs, the moving member can fall from the starting position to the induction position; the displacement sensor and the pressure sensor are used to identify whether there is a moving member at the induction position and transmit the identification information to a controller; a buzzer and a warning light are arranged outside the housing and are respectively connected to the controller.

[0007] Furthermore, the moving member is a sphere, and a groove for placing the sphere is arranged at the starting position.

[0008] Furthermore, a receiving groove for accommodating the moving member is arranged at the induction position, the receiving groove is correspondingly arranged with the displacement sensor, and the pressure sensor is arranged at the bottom of the receiving groove.

[0009] Further, an installation port for installing a displacement sensor is provided on the outer shell.

[0010] Further, threads are provided at the installation port, and the displacement sensor is threadedly connected to the outer shell through the installation port.

[0011] Further, the earthquake sensor further includes a reset mechanism; the reset mechanism is used to move the sphere located in the accommodation groove to the groove.

[0012] Further, the reset mechanism includes a reset fork, a reset rotating shaft, and a reset knob; the reset fork is rotatably connected to the outer shell through the reset rotating shaft, the reset knob is arranged outside the outer shell and fixedly connected to one end of the reset rotating shaft; the end of the reset fork far from the rotating shaft is a contact end that contacts the sphere.

[0013] Further, a guiding slope is provided on one side of the convex platform close to the accommodation groove, the guiding slope is inclined relative to the bottom of the sealing cavity, and the lowest point of the guiding slope is located at the edge of the accommodation groove.

[0014] Further, the earthquake sensor further includes a limiting fork, a limiting rotating shaft, and a limiting knob; the limiting fork is rotatably connected to the outer shell through the limiting rotating shaft, the limiting knob is arranged outside the outer shell and fixedly connected to one end of the limiting rotating shaft; the limiting fork is arranged at one end of the convex platform far from the accommodation groove.

[0015] Further, reset springs are provided on both the reset rotating shaft and the limiting rotating shaft.

[0016] For the earthquake sensor provided by the present utility model, when an earthquake occurs and vibrations are generated, the moving part sways and drops from the starting position to the lower sensing position due to gravity. At this time, the displacement sensor and the pressure sensor respectively recognize that there is a moving part at the sensing position, and transmit the recognized information to the controller. The controller controls the buzzer and the warning light to start alarming to play a warning role. The setting method of the height difference between the starting position and the sensing position can enable the moving part to slide to the sensor recognition position by its own gravity; the setting of the sealing cavity can prevent interference from other factors except vibrations. The dual insurance setting of the displacement sensor and the pressure sensor can ensure that the controller can recognize the vibration situation in a timely and accurate manner.

[0017] As can be seen from the above, compared with the prior art, the above earthquake sensor is set more firmly, and neither the starting position nor the sensing position of the moving part will be displaced. When an earthquake occurs, the moving part can accurately reach the sensing position under its own gravity, and the displacement sensor and the pressure sensor can more accurately recognize the moving part and feedback the earthquake situation. Description of the Drawings

[0018] To more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of the seismic sensor moving part provided by the embodiment of the present utility model at the starting position;

[0020] Figure 2 Structural schematic diagram of the seismic sensor moving part provided by the embodiment of the present utility model at the sensing position;

[0021] Figure 3 Structural schematic diagram of the seismic sensor provided by the embodiment of the present utility model;

[0022] Figure 4 Schematic diagram of the parameter relationship between the groove and the sphere provided by the embodiment of the present utility model.

[0023] Icons: 1 - housing; 2 - sensor assembly; 3 - moving part; 4 - boss; 5 - sealing cavity; 6 - starting position; 7 - sensing position; 8 - sphere; 9 - groove; 10 - receiving groove; 11 - mounting opening; 12 - reset mechanism; 13 - guiding ramp; 14 - limiting fork; 15 - limiting rotating shaft; 16 - limiting knob; 17 - buzzer; 18 - warning light; 101 - cover plate; 102 - bottom plate; 103 - valve body; 201 - displacement sensor; 202 - pressure sensor; 1201 - reset fork; 12 / 02 - reset rotating shaft; 1203 - reset knob. Specific embodiments

[0024] The following will clearly and completely describe the technical solutions of the present utility model in combination with the embodiments. Obviously, the described embodiments are some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0025] Such as Figures 1 - 3As shown in the figure, the earthquake sensor provided by the embodiment of the present utility model includes a housing 1, a sensor assembly 2 fixedly connected to the housing 1, a moving member 3 and a boss 4; the moving member 3 and the boss 4 are both arranged in a sealed cavity 5 inside the housing 1; a starting position 6 for placing the moving member 3 is arranged on the boss 4, and an induction position 7 lower than the starting position 6 is arranged at the bottom of the sealed cavity 5; the sensor assembly 2 includes a displacement sensor 201 and a pressure sensor 202; the displacement sensor 201 is arranged corresponding to the induction position 7, and the pressure sensor 202 is arranged at the induction position 7; when vibration occurs, the moving member 3 can fall from the starting position 6 to the induction position 7; the displacement sensor 201 and the pressure sensor 202 are used to identify whether there is a moving member 3 at the induction position 7 and transmit the identification information to the controller; a buzzer 17 and a warning light 18 respectively connected to the controller are arranged outside the housing 1.

[0026] Specifically, the housing 1 includes a cover plate 101, a bottom plate 102 and a valve body 103 located between the two; the cover plate 101 and the bottom plate 102 are respectively detachably and fixedly connected to the valve body 103; the boss 4 and the bottom plate 102 are integrally formed; the boss 4 and the moving member 3 are made of materials with better strength and hardness, such as stainless steel.

[0027] The buzzer 17 and the warning light 18 are fixedly arranged on the cover plate 101, and the position here is obvious and convenient for identification.

[0028] It should be noted that the working principles of the displacement sensor 201 and the pressure sensor 202, and the way of transmitting the identification information to the controller are prior arts and will not be elaborated here.

[0029] Furthermore, an installation opening 11 for installing the displacement sensor 201 is arranged on the housing 1.

[0030] Among them, the displacement sensor 201 can be clamped at the installation opening 11; or the displacement sensor 201 can be in interference fit with the cover plate 101 of the housing 1 at the installation opening 11 to be fixed at the installation opening 11.

[0031] Or, threads are arranged at the installation opening 11, and the displacement sensor 201 is threadedly connected to the housing 1 through the installation opening 11.

[0032] In the earthquake sensor provided by the embodiment of the present utility model, when an earthquake occurs and generates vibrations, the moving member 3 shakes and drops from the starting position 6 to the lower induction position 7 due to gravity. At this time, the displacement sensor 201 and the pressure sensor 202 respectively identify the presence of the moving member 3 at the induction position 7 and transmit the identified information to the controller. The controller controls the buzzer 17 and the warning light 18 to start alarming to play a warning role. The setting method of the height difference between the starting position 6 and the induction position 7 enables the moving member 3 to slide to the recognition position of the sensor 2 under its own gravity; the setting of the sealed cavity 5 can prevent interference from other factors except vibrations. The dual-insurance setting of the displacement sensor 201 and the pressure sensor 202 can ensure that the controller can identify the vibration situation in a timely and accurate manner.

[0033] As can be seen from the above, compared with the prior art, the above earthquake sensor is set more firmly, and neither the starting position 6 nor the induction position 7 of the moving member 3 will be displaced. When an earthquake occurs, the moving member 3 can accurately reach the induction position 7 under its own gravity, and the displacement sensor 201 and the pressure sensor 202 can more accurately identify the moving member 3 and feedback the earthquake situation.

[0034] On the basis of the above embodiment, further, the moving member 3 is a sphere 8, and a groove 9 for placing the sphere 8 is provided at the starting position 6.

[0035] Specifically, as Figure 4 shown, the relationship between the groove 9 and the sphere 8 is as follows:

[0036] R is the diameter of the sphere 8, l is the diameter of the groove 9, and the angle corresponding to l is

[0037] h = R × cosθ1;

[0038] δ = R - h;

[0039]

[0040] Inertial force When the acceleration a of the sphere 8 reaches the preset value, the sphere 8 rolls out of the groove 9.

[0041] The above earthquake sensor is applicable to earthquake intensity above degree 6.

[0042] Further, an accommodation groove 10 for accommodating the moving member 3 is provided at the induction position 7. The accommodation groove 10 is correspondingly arranged with the displacement sensor 201, and the pressure sensor 202 is arranged at the bottom of the accommodation groove 10.

[0043] Specifically, a buffer member such as a rubber strip is provided at the edge of the receiving groove 10. When the moving member 3 rolls into the receiving groove 10, the buffer member can buffer it and prevent the two from colliding and causing wear.

[0044] In this embodiment, during use, the ball 8 is fixedly placed at the starting position 6, that is, placed in the groove 9. When an earthquake occurs, the ball 8 shakes and falls out of the groove 9, rolling into the receiving groove 10. The receiving groove 10 fixes and limits the ball 8 to ensure that the displacement sensor 201 and the pressure sensor 202 can accurately identify the ball 8 located at the sensing position 7.

[0045] On the basis of the above embodiment, the earthquake sensor further includes a reset mechanism 12 ; the reset mechanism 12 is used to move the ball 8 located in the receiving groove 10 to the groove 9 .

[0046] The reset mechanism 12 may include a lifting platform located at the bottom of the receiving tank 10. The surface of the lifting platform that contacts the ball 8 is inclined, with the end closer to the boss 4 being lower than the end farther from the boss 4. When the ball 8 needs to be reset to the groove 9, the platform is raised to a preset height, and the ball 8 rolls down to the groove 9. The platform then drops down, ensuring the device can be reused.

[0047] Alternatively, the reset mechanism 12 includes a reset fork 1201, a reset shaft 1202, and a reset knob 1203. The reset fork 1201 is rotatably connected to the housing 1 via the reset shaft 1202. The reset knob 1203 is disposed outside the housing 1 and fixedly connected to one end of the reset shaft 1202. The end of the reset fork 1201, away from the shaft, is the contact end with the ball 8. Specifically, a buffer member, such as a rubber strip, is provided at the contact end of the reset fork 1201 to provide a buffer when the ball 8 is moved, preventing scratches and bumps.

[0048] In this embodiment, during use, the user rotates the reset knob 1203, thereby driving the reset shaft 1202 to rotate, and then driving the reset fork 1201 to move. The contact end of the reset fork 1201 contacts the ball 8 and moves the ball 8 to the groove 9, and then rotates the reset knob 1203 in the opposite direction to reset the reset fork 1201 to its initial position.

[0049] Preferably, a reset spring is provided on the reset shaft 1202. When the ball 8 is moved to the groove 9, the user can release the reset knob 1203. Under the action of the reset spring, the reset fork 1201 will automatically reset to its initial position.

[0050] On the basis of the above embodiment, a guide slope 13 is further provided on the side of the boss 4 close to the accommodating groove 10. The guide slope 13 is inclined relative to the bottom of the sealing cavity 5, and the lowest point of the guide slope 13 is located at the edge of the accommodating groove 10.

[0051] Specifically, the guide slope 13 and the boss 4 are formed integrally.

[0052] In this embodiment, the guide slope 13 can guide the ball 8 when it rolls down to the receiving groove 10. At the same time, when the ball 8 is reset to the groove 9, the guide slope 13 can also guide it and make the reset process more labor-saving.

[0053] On the basis of the above embodiment, the earthquake sensor further includes a limit fork 14, a limit shaft 15 and a limit knob 16; the limit fork 14 is rotatably connected to the shell 1 through the limit shaft 15, and the limit knob 16 is arranged outside the shell 1 and fixedly connected to one end of the limit shaft 15; the limit fork 14 is arranged at the end of the boss 4 away from the accommodating groove 10.

[0054] In this embodiment, during use, the user uses the reset fork 1201 to move the ball 8, and then adjusts the limit fork 14, causing the ball 8 to rise and roll to the groove 9, where it abuts against the limit fork 14, preventing the ball 8 from continuing to roll. The limit fork 14 can limit the ball 8, so that the ball 8 stays accurately in the groove 9.

[0055] Specifically, the adjustment method of the limit fork 14 is the same as that of the reset fork 1201. The user rotates the limit knob 16, thereby rotating the limit shaft 15, which in turn drives the limit fork 14 to move. After the limit function is completed, the limit knob 16 is rotated in the opposite direction to reset the limit fork 14 to its initial position. Specifically, a buffer member such as a rubber strip is provided at the contact point between the limit fork 14 and the ball 8 to provide a buffering effect when the ball 8 is moved, preventing bumps and scratches.

[0056] Preferably, a return spring is provided on the limit rotating shaft 15 , and under the action of the return spring, the limit shift fork 14 will automatically return to its initial position.

[0057] It should be noted that when the ball 8 is accurately placed in the groove 9, it can also abut against the limit fork 14. When an earthquake occurs, it can ensure that the ball 8 rolls toward the receiving groove 10, playing a limiting role.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An earthquake sensor, characterized in that, The earthquake sensor includes a housing, a sensor assembly fixedly connected to the housing, a moving member, and a boss; The moving member and the boss are both arranged in a sealed cavity inside the housing; a starting position for placing the moving member is provided on the boss, and an induction position lower than the starting position is provided at the bottom of the sealed cavity; the sensor assembly includes a displacement sensor and a pressure sensor; the displacement sensor is correspondingly arranged with the induction position, and the pressure sensor is arranged at the induction position; when vibration occurs, the moving member can fall from the starting position to the induction position; the displacement sensor and the pressure sensor are used to identify whether the moving member exists at the induction position and transmit the identification information to the controller; A buzzer and a warning light are arranged outside the housing and are respectively connected to the controller.

2. The seismic sensor according to claim 1, wherein The moving member is a sphere, and a groove for placing the sphere is provided at the starting position.

3. The seismic sensor according to claim 2, characterized in that, The induction position is provided with a receiving groove for receiving the moving member, the receiving groove is correspondingly arranged with the displacement sensor, and the pressure sensor is arranged at the bottom of the receiving groove.

4. The seismic sensor according to claim 1, characterized in that, The housing is provided with a mounting opening for mounting the displacement sensor.

5. The seismic sensor according to claim 4, wherein, Threads are provided at the mounting opening, and the displacement sensor is threadedly connected to the housing through the mounting opening.

6. The seismic sensor according to claim 3, characterized in that, The earthquake sensor further includes a reset mechanism; the reset mechanism is used to move the sphere located in the receiving groove to the groove.

7. The earthquake sensor according to claim 6, characterized in that, The reset mechanism includes a reset fork, a reset rotating shaft, and a reset knob; The reset fork is rotatably connected to the housing through the reset rotating shaft, the reset knob is arranged outside the housing and is fixedly connected to one end of the reset rotating shaft; the end of the reset fork away from the rotating shaft is a contact end that contacts the sphere.

8. The seismic sensor according to claim 7, characterized in that, A guiding slope is provided on one side of the boss close to the receiving groove, the guiding slope is inclined relative to the bottom of the sealed cavity, and the lowest point of the guiding slope is located at the edge of the receiving groove.

9. The seismic sensor according to claim 7 or 8, characterized in that, The earthquake sensor further includes a limiting fork, a limiting rotating shaft, and a limiting knob; The limiting fork is rotatably connected to the housing through the limiting rotating shaft, the limiting knob is arranged outside the housing and is fixedly connected to one end of the limiting rotating shaft; the limiting fork is arranged at the end of the boss away from the receiving groove.

10. The seismic sensor according to claim 9, characterized in that, Reset springs are arranged on both the reset rotating shaft and the limiting rotating shaft.

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