CN117647660A - Acceleration sensor - Google Patents

Abstract

The invention discloses an acceleration sensor, which comprises a body, an active heat dissipation mechanism and an extrusion mechanism, wherein a cavity is formed in the body and filled with damping liquid, the active heat dissipation mechanism comprises a first heat dissipation fin and a heat dissipation pipeline, two opposite side surfaces on the body are respectively provided with a liquid inlet and a liquid outlet, two ends of the heat dissipation pipeline are respectively connected with the liquid inlet and the liquid outlet, the first heat dissipation fin is provided with a plurality of heat dissipation pipelines, and two ends of the heat dissipation pipeline are provided with one-way valves; the extrusion mechanism comprises a balloon, an electric push rod and a pressing plate, wherein the balloon is communicated with the middle position of the heat dissipation pipeline, and the end part of the telescopic rod of the electric push rod is fixedly connected with the end face of the pressing plate. The electric push rod pushes the pressing plate downwards, the pressing plate extrudes the saccule, damping liquid in the saccule is extruded from the liquid outlet, meanwhile, due to negative pressure generated in the process of rebound of the saccule, the damping liquid is sucked into the heat dissipation pipeline through the liquid inlet, so that the damping liquid in the main body is circulated, heat is dissipated through the heat dissipation fins, and the heat dissipation effect of the inside of the acceleration sensor is better.

Description

Acceleration sensor

Technical Field

The invention relates to an acceleration sensor, in particular to an acceleration sensor with good heat dissipation effect.

Background

The acceleration sensor is a sensor capable of measuring acceleration, and is generally composed of a mass block, a damper, an elastic element, a sensitive element, an adaptive circuit and the like, wherein in the acceleration process of the sensor, an acceleration value is obtained by measuring inertial force borne by the mass block and utilizing Newton's second law, and the common acceleration sensor comprises a capacitance type, an inductance type, a strain type, a piezoresistance type, a piezoelectric type and the like according to different sensitive elements of the sensor.

The existing acceleration sensor with good heat dissipation performance is provided with a semiconductor refrigerating sheet at the lower end inside the mounting seat, and the Peltier effect of semiconductor materials is utilized, so that when direct current passes through a couple formed by connecting two different semiconductor materials in series, heat can be absorbed and released respectively at two ends of the couple, cold air can be released, and the cold end is aligned with the acceleration sensor body to cool the acceleration sensor body.

The above scheme is that although the outside of the acceleration sensor is radiated, the heat generated by the acceleration sensor is mainly in the acceleration sensor, and only the surface of the acceleration sensor is radiated through the radiating device, so that the radiating effect is poor, and when the vibration speed is measured, the generated high temperature can cause the distortion of the measuring result or the damage of the sensor.

Disclosure of Invention

The application provides an acceleration sensor, which solves the technical problem that the acceleration sensor in the prior art has poor internal heat dissipation effect.

The application provides an acceleration sensor, including the body, the inside cavity that is of body and packing have damping fluid, still include:

the active heat dissipation mechanism comprises a first heat dissipation fin and a heat dissipation pipeline, wherein two opposite side surfaces on the body are respectively provided with a liquid inlet and a liquid outlet, two ends of the heat dissipation pipeline are respectively connected with the liquid inlet and the liquid outlet, the first heat dissipation fin is provided with a plurality of heat dissipation pipelines, and two ends of the heat dissipation pipeline are respectively provided with one-way valves;

the extrusion mechanism comprises a balloon, an electric push rod and a pressing plate, wherein the balloon is communicated with the middle position of the heat dissipation pipeline, the pressing plate is fixedly arranged on the top surface of the balloon, and the end part of the telescopic rod of the electric push rod is fixedly connected with the end surface of the pressing plate.

According to the acceleration sensor provided by the invention, the base is fixedly arranged on the end face of the body, the heat dissipation pipeline is a corrugated pipe, the balloon is fixedly arranged on the base, and the first heat dissipation fins are fixedly arranged at the wave crest of the corrugated pipe.

According to the acceleration sensor provided by the invention, the extrusion mechanism further comprises a first connecting rod and a second connecting rod, the corrugated pipes are connected to two ends of the balloon, the middle position of each corrugated pipe is fixedly provided with a baffle, the telescopic rod of the electric push rod is fixedly provided with a mounting block, the first connecting rod is rotatably arranged on the mounting block, a synchronous rod is fixedly connected between the two second connecting rods, one of the second connecting rods is positioned above the pressing plate, the other second connecting rod penetrates through the base, two ends of the second connecting rod are respectively fixedly connected with the corresponding baffle, and the other end of the first connecting rod is hinged with the position, close to one side of the liquid outlet, in the middle of the second connecting rod.

According to the acceleration sensor provided by the invention, the top surface of the body is fixedly provided with the first bracket corresponding to the position of the base, the first bracket is fixedly provided with the slide way, the second connecting rod above the pressing plate is slidably arranged in the slide way, the top surface of the body is fixedly provided with the second bracket corresponding to the position of the baffle, the second bracket is fixedly provided with the retainer ring, and the spring is connected between the baffle and the retainer ring.

According to the acceleration sensor provided by the invention, the acceleration sensor further comprises a heat dissipation plate and heat conduction gel, wherein the heat dissipation plate is fixedly arranged on the end face of the body, the heat conduction gel is arranged between the first heat dissipation fins close to one end of the liquid outlet, the heat conduction gel is compressed in an operable manner and is in contact with the heat dissipation plate, and a plurality of second heat dissipation fins are arranged on the heat dissipation plate.

According to the acceleration sensor provided by the invention, the second radiating fins are hinged with the radiating plate, the end parts of the second radiating fins are hinged with the adjusting rods, the push plates are arranged on the two sides of the balloon corresponding to the second radiating fins, the push plates are arranged on the radiating plate in a sliding manner, and the end parts of the adjusting rods are arranged on the push plates in a sliding manner.

According to the acceleration sensor provided by the invention, the acceleration sensor further comprises a shell, the body is fixedly arranged in the shell, an auxiliary heat dissipation mechanism is fixedly arranged on the top surface of the shell, the auxiliary heat dissipation mechanism is arranged corresponding to the second heat dissipation fins on two sides of the balloon, and the auxiliary heat dissipation mechanism comprises:

the mounting seat is fixedly arranged on the top surface inside the shell, and the mounting seat corresponds to the second radiating fin in position;

the top end of the air box is fixedly connected with the mounting seat;

the heat conducting strips are fixedly arranged on the bottom surface of the bellows, and the heat conducting strips are arranged corresponding to gaps among the second radiating fins.

According to the acceleration sensor provided by the invention, the acceleration sensor further comprises a shell, the body is fixedly arranged in the shell, the two sides of the shell corresponding to the liquid inlet and the liquid outlet are respectively provided with an air inlet and an air outlet, and the position of the shell corresponding to the air outlet is fixedly provided with an exhaust fan.

According to the acceleration sensor provided by the invention, the acceleration sensor further comprises a first temperature sensor, a second temperature sensor and a controller, wherein the first temperature sensor is arranged in the body, the second temperature sensor is arranged in the balloon, and the first temperature sensor, the second temperature sensor, the electric push rod and the exhaust fan are all connected with the controller.

The invention also provides a heat dissipation method of the acceleration sensor, which is applied to the acceleration sensor, and the specific method comprises the following steps:

the first temperature sensor and the second temperature sensor respectively detect temperature information in the body and the balloon and transmit the temperature information to the controller;

the controller receives temperature information detected by the first temperature sensor and the second temperature sensor, and compares the temperature information detected by the first temperature sensor and the second temperature sensor;

setting a temperature threshold of the first temperature sensor and a temperature difference threshold between the first temperature sensor and the second temperature sensor;

when the temperature detected by the first temperature sensor is greater than or equal to the temperature threshold, the controller sends an action signal to the electric push rod, and the electric push rod works after receiving the action signal;

when the temperature detected by the first temperature sensor is greater than or equal to the temperature threshold value and the temperature difference between the first temperature sensor and the second temperature sensor is smaller than the temperature difference threshold value, the controller respectively sends action signals to the exhaust fan and the electric push rod, and the exhaust fan and the electric push rod work after receiving the action signals;

when the temperature detected by the first temperature sensor is greater than or equal to the temperature threshold value and the temperature difference between the first temperature sensor and the second temperature sensor is greater than or equal to the temperature difference threshold value, the controller sends a high-frequency action signal to the electric push rod, and the electric push rod receives the high-frequency action signal and then carries out high-frequency work;

and when the temperature detected by the first temperature sensor is smaller than the temperature threshold value, the electric push rod and the exhaust fan do not work.

The beneficial effects of the application are as follows:

according to the acceleration sensor provided by the invention, the electric push rod pushes the pressing plate downwards, the pressing plate extrudes the balloon, damping liquid in the balloon is extruded from the liquid outlet, meanwhile, due to negative pressure generated in the balloon during rebound, the damping liquid is sucked into the heat dissipation pipeline through the liquid inlet, so that the damping liquid in the body is circulated, heat is dissipated through the heat dissipation fins, and the heat dissipation effect in the acceleration sensor is better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention.

Fig. 1 is a schematic diagram of an overall structure of an acceleration sensor provided in the present application;

FIG. 2 is a second schematic diagram of the overall structure of an acceleration sensor provided in the present application;

fig. 3 is a schematic structural diagram of an extrusion mechanism in an acceleration sensor provided in the present application;

fig. 4 is a schematic diagram of a fitting state of a baffle and a retainer ring in an acceleration sensor provided by the present application;

fig. 5 is a schematic structural diagram of an auxiliary heat dissipation mechanism in an acceleration sensor provided by the present application;

FIG. 6 is a second schematic structural diagram of an auxiliary heat dissipation mechanism in an acceleration sensor according to the present disclosure;

fig. 7 is a schematic diagram of a state of matching between a body and a housing in an acceleration sensor provided by the present application;

wherein, 100-body; 110-a liquid inlet; 120-a liquid outlet; 130-a one-way valve; 140-a base; 150-baffle plates; 160-a first bracket; 161-slideway; 170-a second bracket; 171-retainer ring; 172-springs; 180-heat dissipation plate; 181-a thermally conductive gel; 182-second heat radiating fins; 183-adjusting the lever; 184-push plate; 190-a housing; 191-air inlet; 192-outlet; 193-exhaust fan;

200-an active heat dissipation mechanism; 210-first heat radiating fins; 220-a heat dissipation pipeline; 340-a first link; 350-a second link; 360-synchronizing bar;

300-an extrusion mechanism; 310-balloon; 320-electric push rod; 321-mounting blocks; 330-pressing plate;

400-auxiliary heat dissipation mechanism; 410-mounting base; 420-bellows; 430—thermally conductive strips; 431-notch.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is correspondingly changed.

Furthermore, the descriptions of "first," "second," and the like, herein are for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

According to the acceleration sensor, the technical problem that the heat dissipation effect inside the acceleration sensor is poor in the prior art is solved.

The technical scheme in the embodiment of the application aims to solve the technical problems, and the overall thought is as follows:

as shown in fig. 1 and 2, the present application provides an acceleration sensor, including a body 100, the body 100 is internally provided with a cavity and filled with a damping fluid, and further includes:

the active heat dissipation mechanism 200, wherein the active heat dissipation mechanism 200 comprises a first heat dissipation fin 210 and a heat dissipation pipeline 220, two opposite side surfaces on the body 100 are respectively provided with a liquid inlet 110 and a liquid outlet 120, two ends of the heat dissipation pipeline 220 are respectively connected with the liquid inlet 110 and the liquid outlet 120, the first heat dissipation fin 210 is a plurality of heat dissipation pipelines 220, and two ends of the heat dissipation pipeline 220 are respectively provided with a one-way valve 130;

the extrusion mechanism 300, extrusion mechanism 300 includes sacculus 310, electricity push rod 320 and clamp plate 330, sacculus 310 intercommunication sets up the intermediate position of heat dissipation pipeline 220, clamp plate 330 is fixed to be set up the top surface of sacculus 310, the telescopic link tip of electricity push rod 320 with clamp plate 330 terminal surface fixed connection.

The balloon 310 is made of silica gel or polyurethane, and the damping fluid in the balloon 310 is extruded by extruding the balloon, and the damping fluid in the heat dissipation pipeline 220 flows unidirectionally due to the action of the one-way valve 130, so that the damping fluid in the body 100 has a circulation effect in the active heat dissipation mechanism 200;

the electric push rod 320 pushes the pressing plate 330 downwards, the pressing plate 330 extrudes the balloon 310, damping liquid in the balloon 310 is extruded from the liquid outlet 120, meanwhile, due to negative pressure generated in rebound of the balloon 310, the damping liquid is sucked into the heat dissipation pipeline 220 through the liquid inlet 110, so that the damping liquid in the body 100 is circulated, heat is dissipated through the heat dissipation fins, and the heat dissipation effect in the acceleration sensor is better.

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

Specifically, as shown in fig. 1 and fig. 2, a base 140 is fixedly disposed on an end surface of the body 100, the heat dissipation pipeline 220 is a bellows, the balloon 310 is fixedly disposed on the base 140, and the first heat dissipation fin 210 is fixedly disposed at a peak of the bellows, so that the specific structure of the bellows is not shown in the drawings in order to clearly show the specific structure of the active heat dissipation mechanism 200.

The bellows adopts the elasticity scalable bellows, sets up first fin 210 in the crest department of bellows, has improved the radiating radius of first fin 210, makes the radiating effect of first fin 210 better to first fin 210 can remove along with the removal of bellows, can further improve the radiating effect of initiative cooling mechanism 200.

Further, as shown in fig. 1, fig. 2, and fig. 3, the pressing mechanism 300 further includes a first connecting rod 340 and a second connecting rod 350, the bellows are connected to two ends of the balloon 310, a baffle 150 is fixedly disposed at each intermediate position of the bellows, a mounting block 321 is fixedly disposed on a telescopic rod of the electric push rod 320, the first connecting rod 340 is rotatably disposed on the mounting block 321, a synchronizing rod 360 is fixedly connected between two second connecting rods 350, one of the second connecting rods 350 is located above the pressing plate 330, the other second connecting rod 350 passes through the base 140, two ends of the second connecting rod 350 are fixedly connected with the corresponding baffle 150, and the other end of the first connecting rod 340 is hinged to a position, close to one side of the liquid outlet 120, in the middle of the second connecting rod 350.

The installation block 321 is fixedly arranged on the telescopic rod of the electric push rod 320, the installation position of the installation block 321 does not relate to the retraction area of the telescopic rod, the installation block 321 does not affect the normal extension and retraction of the telescopic rod, the electric push rod 320 moves up and down, the first connecting rod 340 moves up and down along with the electric push rod 320, a certain angle is formed between the first connecting rod 340 and the second connecting rod 350 when the first connecting rod 340 moves downwards, the first connecting rod 340 gradually pushes the second connecting rod 350 to the direction of the liquid outlet 120, the first connecting rod 340 moves upwards, the first connecting rod 340 drives the second connecting rod 350 to move towards the direction of the liquid inlet 110, the two second connecting rods 350 are fixedly connected through the synchronous rod 360, and the base 140 is guided, so that the second connecting rod 350 pushes the baffle 150 to move horizontally and reciprocally, finally the corrugated pipe horizontally reciprocates, the first radiating fin 210 outside the corrugated pipe is convenient for radiating heat along with the movement, the inner side of the corrugated pipe can provide a certain thrust for the damping liquid in the corrugated pipe, and the flow of the damping liquid in the corrugated pipe to the liquid outlet 120 is more facilitated.

Optionally, a rack and pinion structure may be further provided, a first rack is fixedly disposed between the two baffles 150, a second rack is fixedly disposed on a side surface of the electric push rod 320, the first rack and the second rack are vertically disposed, a gear is disposed at a crossing of the first rack and the second rack, the gear is fixedly disposed on the body 100 through a rack, when the electric push rod 320 moves downward, the second rack moves along with the electric push rod 320, the gear transfers a vertical motion of the second rack to a horizontal motion of the first rack, and the first rack further moves horizontally along with the two baffles 150, so that a horizontal motion of the bellows is realized, and a connection relationship between the structures can be clearly expressed through the description.

In order to make the second link 350 above the pressing plate 330 more stable, further, as shown in fig. 1-4, a first bracket 160 is fixedly disposed on the top surface of the body 100 corresponding to the position of the base 140, a slide 161 is fixedly disposed on the first bracket 160, the second link 350 above the pressing plate 330 is slidably disposed in the slide 161, a second bracket 170 is fixedly disposed on the top surface of the body 100 corresponding to the position of the baffle 150, a retainer 171 is fixedly disposed on the second bracket 170, and a spring 172 is connected between the baffle 150 and the retainer 171.

In the horizontal movement process of the second connecting rods 350, the second connecting rods 350 slide in the slide ways 161, the slide ways 161 and the base 140 play a role in guiding the two second connecting rods 350, so that stability can be kept in the expansion process of the corrugated pipe, in the movement process of the second connecting rods 350 pushing the baffle plate 150 towards the liquid outlet 120, the baffle plate 150 compresses the spring 172, the electric push rod 320 drives the first connecting rod 340 to move upwards, and the pushing force of the spring 172 pushes the baffle plate 150 and the second connecting rod 350 to move towards the liquid inlet 110, so that the second connecting rod 350 is prevented from being blocked due to friction force in the movement process.

Alternatively, as shown in fig. 1-4, the acceleration sensor further includes a heat dissipating plate 180 and a heat conducting gel 181, where the heat dissipating plate 180 is fixedly disposed on the end surface of the body 100, the heat conducting gel 181 is disposed between the first heat dissipating fins 210 near one end of the liquid outlet 120, the heat conducting gel 181 is disposed below the bellows, the heat conducting gel 181 is operatively compressed and contacts the heat dissipating plate 180, and a plurality of second heat dissipating fins 182 are disposed on the heat dissipating plate 180.

In the process that the second connecting rod 350 drives the corrugated pipe to move towards the liquid outlet 120, the first radiating fin 210 close to one end of the liquid outlet 120 extrudes and deforms the heat conducting gel 181, the heat conducting gel 181 contacts with the heat radiating plate 180 to transfer heat to the heat radiating plate 180, and meanwhile, the heat radiating plate 180 transfers the surface of the body 100 and the temperature of the heat conducting gel 181 to the second radiating fin 182, so that the heat radiating effect of the speed sensor is further improved.

Further, as shown in fig. 5 and 6, the second heat dissipation fin 182 is hinged to the heat dissipation plate 180, a torsion spring is disposed at a position where the second heat dissipation fin 182 is hinged to the heat dissipation plate 180, an adjusting rod 183 is hinged to an end portion of the second heat dissipation fin 182, pushing plates 184 are disposed on two sides of the balloon 310 corresponding to the second heat dissipation fin 182, the pushing plates 184 are slidably disposed on the heat dissipation plate 180, and an end portion of the adjusting rod 183 is slidably disposed on the pushing plates 184.

In the process of flattening the balloon 310 by the electric push rod 320 and expanding the balloon 310, the flattening deformation of the balloon 310 can push the push plate 184 to move, the push plate 184 drives the second radiating fins 182 to vertically stand up in the moving process by the adjusting rod 183, the balloon 310 expands the second radiating fins 182 to rotate towards the radiating plate 180 under the action of the torsion spring, and in the process of repeatedly flattening and expanding the balloon 310, the second radiating fins 182 can fully contact with air, so that the radiating effect of the surface of the body 100 and the radiating effect of the first radiating fins 210 are improved.

In an alternative embodiment, as shown in fig. 5 to 7, the acceleration sensor further includes a housing 190, the body 100 is fixedly disposed in the housing 190, an auxiliary heat dissipation mechanism 400 is fixedly disposed on a top surface of the housing 190, the auxiliary heat dissipation mechanism 400 is disposed corresponding to the second heat dissipation fins 182 on two sides of the balloon 310, and the auxiliary heat dissipation mechanism 400 includes:

the mounting seat 410 is fixedly arranged on the top surface inside the shell 190, and the mounting seat 410 corresponds to the second radiating fins 182 in position;

the top end of the air box 420 is fixedly connected with the mounting seat 410;

the heat conducting strips 430 are fixedly arranged on the bottom surface of the bellows 420, the heat conducting strips 430 are arranged corresponding to gaps between the second radiating fins 182, and the heat conducting strips 430 are provided with notches 431 corresponding to the positions of the adjusting rods 183, so that the heat conducting strips 430 can cross the adjusting rods 183 and extend into the gaps between the second radiating fins 182.

In the process that the acceleration sensor is impacted, the acceleration sensor vibrates and drives the air box 420 to shake up and down, the air box 420 extrudes the air in the air box 420 when shaking, the air in the shell 190 flows conveniently, the heat conducting strip 430 is also driven to be in contact with the second radiating fins 182 in the process that the air box 420 moves up and down, heat transfer can be carried out when the heat conducting strip 430 is in contact with the second radiating fins 182, and the radiating effect of the second radiating fins 182 can be improved.

Further, as shown in fig. 7, the acceleration sensor further includes a housing 190, the body 100 is fixedly disposed in the housing 190, two sides of the housing 190 corresponding to the liquid inlet 110 and the liquid outlet 120 are respectively provided with an air inlet 191 and an air outlet 192, and an exhaust fan 193 is fixedly disposed at a position of the housing 190 corresponding to the air outlet 192.

The acceleration sensor further comprises a first temperature sensor, a second temperature sensor and a controller, wherein the first temperature sensor is arranged inside the body 100, the second temperature sensor is arranged inside the balloon 310, and the first temperature sensor, the second temperature sensor, the electric push rod 320 and the exhaust fan 193 are all connected with the controller.

The temperature inside the body 100 and the balloon 310 is detected by the first temperature sensor and the second temperature sensor, the detected temperature information is transmitted to the controller by the first temperature sensor and the second temperature sensor, the controller controls the electric push rod 320 and the exhaust fan 193 to work, hot air inside the shell 190 can be emitted as soon as possible, and the heat dissipation effect of the first heat dissipation fin 210 and the second heat dissipation fin 182, which is influenced by the overhigh temperature inside the shell 190, is avoided.

Specifically, in the practical application process, a heat dissipation method of an acceleration sensor is provided, and the heat dissipation method is applied to the acceleration sensor, and the specific method is as follows:

the first and second temperature sensors detect temperature information inside the body 100 and inside the balloon 310, respectively, and transmit the temperature information to the controller;

the controller receives temperature information detected by the first temperature sensor and the second temperature sensor, and compares the temperature information detected by the first temperature sensor and the second temperature sensor;

setting a temperature threshold of the first temperature sensor and a temperature difference threshold between the first temperature sensor and the second temperature sensor;

when the temperature detected by the first temperature sensor is greater than or equal to the temperature threshold, the controller sends an action signal to the electric push rod 320, and the electric push rod 320 works after receiving the action signal;

when the temperature detected by the first temperature sensor is greater than or equal to the temperature threshold value and the temperature difference between the first temperature sensor and the second temperature sensor is smaller than the temperature difference threshold value, the controller respectively sends action signals to the exhaust fan 193 and the electric push rod 320, and the exhaust fan 193 and the electric push rod 320 work after receiving the action signals;

when the temperature detected by the first temperature sensor is greater than or equal to the temperature threshold value and the temperature difference between the first temperature sensor and the second temperature sensor is greater than or equal to the temperature difference threshold value, the controller sends a high-frequency action signal to the electric push rod 320, and the electric push rod 320 receives the high-frequency action signal and then performs high-frequency work;

when the temperature detected by the first temperature sensor is less than the temperature threshold, the electric pushrod 320 and the exhaust fan 193 are not operated.

The temperature difference value of the thermometer of the first temperature sensor and the temperature difference value of the thermometer of the second temperature sensor are judged, the current temperature condition and the heat dissipation effect of the acceleration sensor can be mastered more accurately, and then the heat dissipation mode can be adjusted rapidly through the controller, so that the acceleration sensor can dissipate heat rapidly at the overheated position, the use precision of the acceleration sensor is improved, and the service life is prolonged.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. The utility model provides an acceleration sensor, includes the body, the inside cavity that is of body and filling have damping fluid, its characterized in that: further comprises:

the active heat dissipation mechanism comprises a first heat dissipation fin and a heat dissipation pipeline, wherein two opposite side surfaces on the body are respectively provided with a liquid inlet and a liquid outlet, two ends of the heat dissipation pipeline are respectively connected with the liquid inlet and the liquid outlet, the first heat dissipation fin is provided with a plurality of heat dissipation pipelines, and two ends of the heat dissipation pipeline are respectively provided with one-way valves;

the extrusion mechanism comprises a balloon, an electric push rod and a pressing plate, wherein the balloon is communicated with the middle position of the heat dissipation pipeline, the pressing plate is fixedly arranged on the top surface of the balloon, and the end part of the telescopic rod of the electric push rod is fixedly connected with the end surface of the pressing plate.

2. The acceleration sensor of claim 1, wherein a base is fixedly arranged on the end face of the body, the heat dissipation pipeline is a corrugated pipe, the balloon is fixedly arranged on the base, and the first heat dissipation fin is fixedly arranged at a wave crest of the corrugated pipe.

3. The acceleration sensor of claim 2, wherein the squeezing mechanism further comprises a first connecting rod and a second connecting rod, the bellows are connected to two ends of the balloon, a baffle is fixedly arranged at the middle position of each bellows, a mounting block is fixedly arranged on a telescopic rod of the electric push rod, the first connecting rod is rotatably arranged on the mounting block, a synchronous rod is fixedly connected between the two second connecting rods, one of the second connecting rods is located above the pressing plate, the other second connecting rod penetrates through the base, two ends of the second connecting rod are fixedly connected with the corresponding baffles respectively, and the other end of the first connecting rod is hinged to a position, close to one side of the liquid outlet, in the middle of the second connecting rod.

4. The acceleration sensor of claim 3, wherein a first bracket is fixedly arranged on the top surface of the body corresponding to the position of the base, a slide way is fixedly arranged on the first bracket, the second connecting rod above the pressing plate is slidably arranged in the slide way, a second bracket is fixedly arranged on the top surface of the body corresponding to the position of the baffle, a retainer ring is fixedly arranged on the second bracket, and a spring is connected between the baffle and the retainer ring.

5. The acceleration sensor of claim 2, further comprising a heat dissipating plate fixedly arranged on the end face of the body and a heat conducting gel arranged between the first heat dissipating fins near the end of the liquid outlet, the heat conducting gel being operatively compressed and in contact with the heat dissipating plate, the heat dissipating plate being provided with a plurality of second heat dissipating fins.

6. The acceleration sensor of claim 5, wherein the second heat dissipating fin is hinged to the heat dissipating plate, an adjusting rod is hinged to an end of the second heat dissipating fin, pushing plates are arranged on two sides of the balloon corresponding to the second heat dissipating fin, the pushing plates are arranged on the heat dissipating plate in a sliding mode, and an end of the adjusting rod is arranged on the pushing plates in a sliding mode.

7. The acceleration sensor of claim 6, further comprising a housing, the body being fixedly disposed in the housing, the top surface of the housing being fixedly provided with an auxiliary heat dissipation mechanism disposed in correspondence with the second heat dissipation fins on both sides of the balloon, the auxiliary heat dissipation mechanism comprising:

the mounting seat is fixedly arranged on the top surface inside the shell, and the mounting seat corresponds to the second radiating fin in position;

the top end of the air box is fixedly connected with the mounting seat;

the heat conducting strips are fixedly arranged on the bottom surface of the bellows, and the heat conducting strips are arranged corresponding to gaps among the second radiating fins.

8. The acceleration sensor of claim 1, further comprising a housing, wherein the body is fixedly disposed in the housing, the two sides of the housing corresponding to the liquid inlet and the liquid outlet are respectively provided with an air inlet and an air outlet, and the housing is fixedly provided with an exhaust fan corresponding to the air outlet.

9. The acceleration sensor of claim 8, further comprising a first temperature sensor disposed inside the body, a second temperature sensor disposed inside the balloon, and a controller, wherein the first temperature sensor, the second temperature sensor, the electric push rod, and the exhaust fan are all connected to the controller.

10. The heat dissipation method of the acceleration sensor is characterized by being applied to the acceleration sensor according to claim 9, and comprises the following specific steps:

the first temperature sensor and the second temperature sensor respectively detect temperature information in the body and the balloon and transmit the temperature information to the controller;

the controller receives temperature information detected by the first temperature sensor and the second temperature sensor, and compares the temperature information detected by the first temperature sensor and the second temperature sensor;

setting a temperature threshold of the first temperature sensor and a temperature difference threshold between the first temperature sensor and the second temperature sensor;

when the temperature detected by the first temperature sensor is greater than or equal to the temperature threshold, the controller sends an action signal to the electric push rod, and the electric push rod works after receiving the action signal;

when the temperature detected by the first temperature sensor is greater than or equal to the temperature threshold value and the temperature difference between the first temperature sensor and the second temperature sensor is smaller than the temperature difference threshold value, the controller respectively sends action signals to the exhaust fan and the electric push rod, and the exhaust fan and the electric push rod work after receiving the action signals;

when the temperature detected by the first temperature sensor is greater than or equal to the temperature threshold value and the temperature difference between the first temperature sensor and the second temperature sensor is greater than or equal to the temperature difference threshold value, the controller sends a high-frequency action signal to the electric push rod, and the electric push rod receives the high-frequency action signal and then carries out high-frequency work;

and when the temperature detected by the first temperature sensor is smaller than the temperature threshold value, the electric push rod and the exhaust fan do not work.