CN114061744A - Be used for on-spot public security of library to maintain noise monitoring devices - Google Patents
Be used for on-spot public security of library to maintain noise monitoring devices Download PDFInfo
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- CN114061744A CN114061744A CN202111268366.3A CN202111268366A CN114061744A CN 114061744 A CN114061744 A CN 114061744A CN 202111268366 A CN202111268366 A CN 202111268366A CN 114061744 A CN114061744 A CN 114061744A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 18
- 230000000007 visual effect Effects 0.000 claims abstract description 27
- 238000012423 maintenance Methods 0.000 claims abstract description 16
- 230000006698 induction Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000005191 phase separation Methods 0.000 description 3
- 230000002567 autonomic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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Abstract
The invention discloses a device for monitoring public security maintenance noise on the site of a library, and relates to the field of monitoring public security maintenance noise on the site of the library. The noise monitoring device for the on-site security maintenance of the library comprises a shell, a lifting assembly, a limiting assembly, a moving assembly and an elastic assembly, wherein the upper surface of the shell is fixedly connected with a display, and the upper surface of the display is fixedly connected with two noise detectors and an audible and visual alarm. Under the effect of lifting unit and positive reverse motor for contact piece and inductor contact take place the alarm from audible-visual annunciator and produce personnel to remind the noise, when the noise lasts to go on, spacing subassembly makes fixed frame fixed, and audible-visual annunciator will continue to carry out the alarm this moment, need stop the alarm through drawing the piece, and the alarm of avoiding accidental noise to lead to makes staff's work load too big condition take place.
Description
Technical Field
The invention relates to the technical field of library field public security maintenance noise monitoring, in particular to a device for monitoring library field public security maintenance noise.
Background
The library is a mechanism for collecting, arranging and collecting book data for people to read and reference, is originated from the habit of keeping record of events, is a special place for readers to use documents in the library, and needs to follow the basic order of the library when the libraries are used for borrowing books, wherein the basic order comprises keeping the indoor quiet state, asking the pager and the mobile phone to be turned off or turned to be in a quiet state when the library enters the library, and asking the caller to talk with light sound in the library so as to avoid influencing the reading of other people.
Usually the order in library is all followed by artificial consciousness, too when noisy, the staff just can stop, because everybody's autonomic consciousness is different, different to the standard of noisy, so the management is also comparatively troublesome, some libraries use the noise detector to detect and remind the staff to stop, but the sound that appears by accident too big also can lead to noise detection device to report to the police, also can produce the police dispatch newspaper when the external world takes place too big noise, thereby make staff's work load increase, so we provide one kind and be used for the on-the-spot peace of library to maintain noise monitoring devices.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention discloses a noise monitoring device for on-site security maintenance of a library, which aims to solve the problems in the background art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a noise monitoring device for library field security maintenance comprises:
the upper surface of the shell is fixedly connected with a display, the upper surface of the display is fixedly connected with two noise detectors and an audible and visual alarm, and the front side of the shell is provided with a rotating door;
the lifting assembly comprises a first threaded rod, the first threaded rod is rotatably connected to the inner bottom wall of the shell, and a first sliding plate is arranged above the first threaded rod;
the limiting assembly comprises a fixed seat, and the fixed seat is fixedly connected to the inner top wall of the shell;
the moving assembly comprises a second threaded rod, the second threaded rod is rotatably connected to the inner wall of the first sliding plate, and the outer surface of the second threaded rod is connected with a connecting rod which is connected with a second sliding plate;
and the elastic component comprises a fixed frame which is fixedly connected to the upper surface of the second sliding plate.
Preferably, the lower fixed surface of shell is connected with the base, the lower fixed surface of base is connected with four pulleys, the last fixed surface of base is connected with the controller, fixedly connected with positive and negative motor that changes on the interior diapire of shell, the first bevel gear has been cup jointed to the pivot surface of positive and negative motor, the surface of first threaded rod has been cup jointed the second bevel gear, first bevel gear meshes with the second bevel gear mutually.
Preferably, the outer surface of the first threaded rod is in threaded connection with a connecting seat, the connecting seat is fixedly connected to the lower surface of a first sliding plate, the first sliding plate is located under a second sliding plate, sliding grooves are formed in two sides of the inner wall of the shell, sliding blocks are formed in two sides of the first sliding plate and two sides of the second sliding plate, and the two sliding blocks are respectively in sliding connection with the inner walls of the two sliding grooves.
Preferably, the upper surface of the first sliding plate is provided with a limiting groove, the inner wall of the limiting groove is connected with a nut seat in a sliding manner, the nut seat is in threaded connection with the outer surface of the second threaded rod, the second threaded rod is in rotational connection with the inner wall of the limiting groove, and a connecting rod is rotationally connected between the first sliding plate and the second sliding plate.
Preferably, the second threaded rod penetrates through the front surface of the first sliding plate and extends outwards, a rotating wheel is fixedly connected to one extending end of the second threaded rod, the connecting rod is rotatably connected to the upper surface of the nut seat, the other end of the connecting rod is rotatably connected to the lower surface of the second sliding plate, an arc-shaped limiting block is slidably connected to the inner wall of the first sliding plate, and the upper end of the arc-shaped limiting block penetrates through the upper surface of the first sliding plate.
Preferably, one side of the arc-shaped limiting block is meshed with the outer surface of the second threaded rod, the other side of the arc-shaped limiting block is fixedly connected with a second spring, the other end of the second spring is fixedly connected to the inner wall of the first sliding plate, and the second spring is always in a compressed state.
Preferably, the upper surface of the second sliding plate is fixedly connected with a third spring, the third spring is arranged inside the fixed frame, the upper surface of the third spring is fixedly connected with a moving block, the moving block is slidably connected to the inner wall of the fixed frame, the upper surface of the moving block is fixedly connected with a contact block, limiting holes are formed in two sides of the fixed frame, the fixed frame is located under the fixed seat, an inductor is arranged above the contact block, and the induction fixed connection is formed in the inner top wall of the shell.
Preferably, the two sides of the fixing seat are respectively and slidably connected with a clamping block, the two upper ends of the clamping blocks are respectively and slidably connected to the inner top wall of the shell, the two clamping blocks are respectively and fixedly connected with a first spring at one side opposite to each other, the other side of the first spring is fixedly connected to the inner wall of the shell, and the clamping blocks are respectively and fixedly connected to the two sides opposite to each other and pull the clamping blocks.
The invention discloses a noise monitoring device for on-site security maintenance of a library, which has the following beneficial effects:
1. the noise monitoring device for the on-site security maintenance of the library firstly detects the noise through two noise detectors, under the action of the lifting component and the forward and reverse rotating motor, the first bevel gear and the second bevel gear rotate, thereby driving the first threaded rod to rotate, enabling the connecting seat to move upwards along the outer surface of the first threaded rod, thereby driving the first sliding plate and the second sliding plate to move upwards, and driving the fixed frame and the contact block to move, when the contact block is contacted with the inductor, thereby the audible and visual alarm generates alarm to remind people with noise, so that the people with noise are kept quiet, when the sound is weakened, the forward and reverse rotating motor rotates reversely, thereby make contact piece and inductor separation to make audible-visual annunciator stop the alarm, accomplish the maintenance of field peace to the library this moment.
2. This be used for on-spot public security of library to maintain noise monitoring devices, when the noise lasts to go on, the second sliding plate continues to rise, thereby make fixed frame and two fixture blocks contact, under the effect of spacing subassembly, make the fixture block insert fixed frame in, fix fixed frame, audible-visual annunciator will continuously carry out the alarm this moment, thereby remind the staff to carry out the management and control, only when the staff makes fixture block and fixed frame phase separation through two drawing blocks of outside pulling, and then make contact block and inductor phase separation, audible-visual annunciator just can stop the alarm, can avoid the noise condition of occurence now by accident, make the staff stop and educate the noise producer, the alarm that avoids accidental noise to lead to simultaneously makes staff's work load too big condition take place.
3. This be used for on-spot public security of library to maintain noise monitoring devices when the influence of external noise receives in library, when needing to produce the alarm to audible-visual annunciator and receive external noise degree improvement, under the effect of removal subassembly, at first through pulling arc stopper, make arc stopper and second threaded rod phase separation, it rotates to have driven the second threaded rod through rotating the runner this moment, thereby make the connecting rod rotate, make it promote the second sliding plate, make the second sliding plate remove, thereby the initial position of fixed frame and contact patch has been changed, thereby make the alarm that audible-visual annunciator received the noise size emergence of having changed, be convenient for should the emergence to the condition of difference.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of the lifting assembly of the present invention;
FIG. 4 is a schematic illustration of the lift assembly of the present invention shown disassembled;
FIG. 5 is a schematic view of the internal structure of the housing of the present invention;
FIG. 6 is a schematic view of a spacing assembly according to the present invention;
FIG. 7 is a schematic view of a moving assembly according to the present invention;
FIG. 8 is a schematic diagram of the mobile assembly of the present invention shown disassembled;
FIG. 9 is a schematic view of the structure of the elastic component of the present invention.
In the figure: 1. a housing; 101. a base; 102. a pulley; 103. a controller; 104. a rotating door; 105. a display; 106. a noise detector; 107. an audible and visual alarm; 108. a positive and negative rotation motor; 109. a first sliding plate; 110. a second sliding plate; 111. a slider; 112. a chute; 2. a first threaded rod; 201. a first bevel gear; 202. a second bevel gear; 203. a connecting seat; 3. a fixed seat; 301. a clamping block; 302. a first spring; 303. pulling the block; 4. a second threaded rod; 401. a nut seat; 402. a limiting groove; 403. a connecting rod; 404. an arc-shaped limiting block; 405. a second spring; 406. a rotating wheel; 5. a fixing frame; 501. a moving block; 502. a third spring; 503. and a contact block.
Detailed Description
The embodiment of the invention discloses a noise monitoring device for on-site security maintenance of a library, which comprises a shell 1, wherein a display 105 is fixedly connected to the upper surface of the shell 1, two noise detectors 106 and an audible and visual alarm 107 are fixedly connected to the upper surface of the display 105, and a rotating door 104 is arranged on the front surface of the shell 1, as shown in fig. 1 and 2.
Fixedly connected with motor 108 just reverses on the interior diapire of shell 1, the inner wall sliding connection of shell 1 has first sliding plate 109 and second sliding plate 110, carries out the noise through two noise detection wares 106 that set up and detects for controller 103 makes motor 108 just reversing to rotate according to the sound size, thereby motor 108 just reverses drives first sliding plate 109 and second sliding plate 110 and removes, thereby makes audible-visual annunciator 107 carry out the police dispatch newspaper and remind.
As shown in fig. 3 and 4, the lifting device comprises a lifting assembly, the lifting assembly comprises a first threaded rod 2, the first threaded rod 2 is rotatably connected to the inner bottom wall of the casing 1, and a first sliding plate 109 is arranged above the first threaded rod 2.
The first threaded rod 2 is rotatably connected to the inner bottom wall of the housing 1, a first bevel gear 201 is sleeved on the outer surface of a rotating shaft of the forward and reverse rotation motor 108, a second bevel gear 202 is sleeved on the outer surface of the first threaded rod 2, the first bevel gear 201 is meshed with the second bevel gear 202, a connecting seat 203 is connected to the outer surface of the first threaded rod 2 in a threaded manner, the connecting seat 203 is fixedly connected to the lower surface of the first sliding plate 109, sliding grooves 112 are formed in both sides of the inner wall of the housing 1, sliding blocks 111 are formed in both sides of the first sliding plate 109 and the second sliding plate 110, the first sliding plate 109 and the second sliding plate 110 are slidably connected to the inner wall of the housing 1 through the sliding blocks 111, the forward and reverse rotation motor 108 is rotated to drive the first bevel gear 201 and the second bevel gear 202 to rotate the first threaded rod 2, and the connecting seat 203 is moved under the rotation of the first threaded rod 2, therefore, the first sliding plate 109 moves, and when the first sliding plate 109 moves, the second sliding plate 110 is driven to move, so that when the contact block 503 contacts with the sensor, the audible and visual alarm 107 generates an alarm to remind.
The working principle is as follows: when the noise monitoring for security maintenance on the library site is needed, firstly, the shell 1 is pushed to move to a proper position under the action of the base 101 and the pulley 102, at the moment, noise detection is carried out through the two noise detectors 106, the model of the noise detector 106 is AWA5610P, the noise monitoring device is an existing mature structure, the noise monitoring device is not explained here, when the noise is too high, the controller 103 is used for starting the forward and reverse motor 108 to rotate, the model of the controller 103 is S-MO2, the model of the forward and reverse motor 108 is R147-40.29-Y18.5KW, the noise monitoring device is an existing mature structure, and the noise monitoring device is not explained here.
At this time, the forward and reverse rotation motor 108 drives the first bevel gear 201 to rotate, the second bevel gear 202 rotates along with the rotation of the first bevel gear 201, at this time, the first threaded rod 2 rotates on the inner bottom wall of the housing 1, so that the connecting seat 203 moves upwards along the outer surface of the first threaded rod 2, and further drives the first sliding plate 109 to move upwards, and under the action of the connecting rod 403, the second sliding plate 110 also moves upwards, so that the fixed frame 5 and the contact block 503 are driven to move, when the contact block 503 is in contact with a sensor, the audible and visual alarm 107 alarms to remind, the audible and visual alarm 107 is of the type TGSG-01, which is a mature structure in the prior art, the audible and visual alarm 107 does not explain here, so as to remind people who generate noise and keep quiet, and the audible and visual alarm 107 records the sound as intermittent alarm sound, the sounding state duration is less than the non-sounding state duration, and the non-sounding state duration can make the contact block 503 completely separate from the sensor, when the audible and visual alarm 107 is in the sounding state, the second sliding plate 110 continuously moves upwards, when the artificial noise disappears and the audible and visual alarm 107 alarms in the non-sounding state, the forward and reverse motor 108 performs the above-mentioned opposite movement, so that the contact block 503 is separated from the sensor, at this moment, the audible and visual alarm 107 stops giving an alarm, and the maintenance of the library on-site security is completed.
Example two:
as shown in fig. 5, 6 and 9, the limiting assembly comprises a fixing seat 3, and the fixing seat 3 is fixedly connected to the inner top wall of the housing 1;
and an elastic member including a fixed frame 5, the fixed frame 5 being fixedly coupled to an upper surface of the second sliding plate 110.
When noise is detected, the forward and reverse rotation motor 108 drives the second sliding plate 110 to slide upwards along the sliding groove 112, firstly, the contact block 503 is in contact with the sensor, so that the audible and visual alarm 107 gives an alarm to a person who makes a noise, when the noise disappears and the audible and visual alarm 107 gives no sound, the second sliding plate 110 moves downwards, so that the contact block 503 is separated from the sensor, the alarm disappears at the moment, and the quiet effect of reminding the person is achieved, when the noise continues to go up, the fixed frame 5 is in contact with the two fixture blocks 301, so that the two fixture blocks 301 move, when the fixture blocks 301 are overlapped with the limiting holes at the two sides of the fixed frame 5, the fixture blocks 301 are inserted into the fixed frame 5 under the action of the first spring 302, at the moment, the audible and visual alarm 107 continuously gives an alarm, therefore, the staff is reminded to control the management and control, only when the staff pulls the two pulling blocks 303 outwards to separate the clamping block 301 from the fixed frame 5, and further separate the contact block 503 from the sensor, the audible and visual alarm 107 stops alarming, and at the moment, accidental noise can be avoided, so that the staff can stop and educate the noise maker, and avoid overlarge workload of the staff, the alarm sound of the audible and visual alarm 107 is recorded as intermittent alarm sound, when the audible and visual alarm 107 is in a sound production state, the second sliding plate 110 continuously moves upwards, when artificial noise disappears, and the alarm sound of the audible and visual alarm 107 is in a sound non-production state, the second sliding plate 110 can move downwards, because the sound production state duration of the audible and visual alarm 107 is shorter than the sound production state duration, and the sound production state duration can completely separate the contact block 503 from the sensor, when there is no external noise interference, the audible and visual alarm 107 does not affect the noise detector 106 such that the second sliding plate 110 is continuously moved upward.
The working principle is as follows: when the noise continues to occur, the second sliding plate 110 continues to rise, so that the fixed frame 5 is in contact with the two fixture blocks 301, at the same time, the two fixture blocks 301 slide on the inner top wall of the shell 1, the two first springs 302 are extruded at the same time, the moving block 501 slides downwards along the fixed frame 5, the third spring 502 is compressed at the same time, when the fixture blocks 301 are overlapped with the limiting holes on the two sides of the fixed frame 5, under the rebounding action of the first springs 302, the fixture blocks 301 are inserted into the fixed frame 5, at the moment, the audible and visual alarm 107 continuously gives an alarm, so as to remind a worker to perform management and control, only when the worker pulls the two pulling blocks 303 outwards to separate the fixture blocks 301 from the fixed frame 5, so that the contact blocks 503 are separated from the sensor, the audible and visual alarm 107 stops alarming, and at the accidental noise situation can be avoided, make the staff stop and educate the noise producer, avoid the alarm that accidental noise leads to simultaneously to make staff's the too big condition of work load take place.
Example three:
as shown in fig. 7 and 8, the moving assembly includes a second threaded rod 4, the second threaded rod 4 is rotatably connected to the inner wall of the first sliding plate 109, a connecting rod 403 is connected to the outer surface of the second threaded rod 4, and the second sliding plate 110 is connected through the connecting rod 403.
The upper surface of the first sliding plate 109 is provided with a limiting groove 402, the second threaded rod 4 is rotatably connected to the inner wall of the limiting groove 402, the outer surface of the second threaded rod 4 is in threaded connection with a nut seat 401, the nut seat 401 is slidably connected to the inner wall of the limiting groove 402, the upper surface of the limiting groove 402 is rotatably connected with a connecting rod 403, the other end of the connecting rod 403 is rotatably connected to the lower surface of the second sliding plate 110, the nut seat 401 slides on the inner wall of the limiting groove 402 through the rotation of the second threaded rod 4, and therefore the connecting rod 403 is rotated along the lower surfaces of the nut seat 401 and the second sliding plate 110.
The second threaded rod 4 extends outwards through the front surface of the first sliding plate 109, and one extending end is fixedly connected with a rotating wheel 406, the inner wall of the first sliding plate 109 is connected with an arc-shaped limiting block 404 in a sliding manner, the upper end of the arc-shaped limiting block 404 penetrates through the upper surface of the first sliding plate 109, one side of the arc-shaped limiting block 404 is meshed with the outer surface of the second threaded rod 4, the other side of the arc-shaped limiting block 404 is fixedly connected with a second spring 405, the other end of the second spring 405 is fixedly connected with the inner wall of the first sliding plate 109, the second spring 405 is always in a compressed state, the second threaded rod 4 is limited by the second spring 405 to prevent the second threaded rod 4 from rotating, so that the standard for detecting the noise is changed, the connecting rod 403 is driven to rotate by rotating the rotating wheel 406, the position of the second sliding plate 110 is changed, when the external long-time construction influence is exerted, thereby adjusting the noise level in different situations.
The working principle is as follows: when the library is affected by external noise and the degree of external noise is increased when an alarm needs to be generated on the audible and visual alarm 107, the arc-shaped limiting block 404 is pulled to separate the arc-shaped limiting block 404 from the second threaded rod 4 and extrude the second spring 405, at this time, the second threaded rod 4 is driven to rotate by rotating the rotating wheel 406, so that the nut seat 401 moves along the second threaded rod 4, the connecting rod 403 rotates to push the second sliding plate 110 to move the second sliding plate 110, the initial positions of the fixed frame 5 and the contact block 503 are changed, the arc-shaped limiting block 404 is sent out at this time, under the rebounding of the second spring 405, the arc-shaped limiting block 404 fixes the second threaded rod 4, so that the second threaded rod does not rotate, and the alarm caused by the noise of the audible and visual alarm 107 is changed, it is convenient to deal with the occurrence of different situations.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A noise monitoring device for library field security maintenance, comprising:
the device comprises a shell (1), wherein a display (105) is fixedly connected to the upper surface of the shell (1), two noise detectors (106) and an audible and visual alarm (107) are fixedly connected to the upper surface of the display (105), and a rotating door (104) is arranged on the front surface of the shell (1);
the lifting assembly comprises a first threaded rod (2), the first threaded rod (2) is rotatably connected to the inner bottom wall of the shell (1), and a first sliding plate (109) is arranged above the first threaded rod (2);
the limiting assembly comprises a fixed seat (3), and the fixed seat (3) is fixedly connected to the inner top wall of the shell (1);
the moving assembly comprises a second threaded rod (4), the second threaded rod (4) is rotatably connected to the inner wall of the first sliding plate (109), the outer surface of the second threaded rod (4) is connected with a connecting rod (403), and the second sliding plate (110) is connected through the connecting rod (403);
and the elastic assembly comprises a fixed frame (5), and the fixed frame (5) is fixedly connected to the upper surface of the second sliding plate (110).
2. The device of claim 1, wherein the device comprises: the lower fixed surface of shell (1) is connected with base (101), the lower fixed surface of base (101) is connected with four pulleys (102), the last fixed surface of base (101) is connected with controller (103), fixedly connected with positive reverse motor (108) on the interior diapire of shell (1), first bevel gear (201) has been cup jointed to the pivot surface of positive reverse motor (108), second bevel gear (202) has been cup jointed to the surface of first threaded rod (2), first bevel gear (201) meshes with second bevel gear (202) mutually.
3. A noise monitoring device for library field security maintenance according to claim 2, wherein: the outer surface of the first threaded rod (2) is in threaded connection with a connecting seat (203), the connecting seat (203) is fixedly connected to the lower surface of a first sliding plate (109), the first sliding plate (109) is located under a second sliding plate (110), sliding grooves (112) are formed in two sides of the inner wall of the shell (1), sliding blocks (111) are formed in two sides of the first sliding plate (109) and the second sliding plate (110), and the two sliding blocks (111) are respectively in sliding connection with the inner walls of the two sliding grooves (112).
4. A noise monitoring device for library field security maintenance according to claim 3, wherein: the upper surface of the first sliding plate (109) is provided with a limiting groove (402), the inner wall of the limiting groove (402) is connected with a nut seat (401) in a sliding mode, the nut seat (401) is in threaded connection with the outer surface of the second threaded rod (4), the second threaded rod (4) is in rotary connection with the inner wall of the limiting groove (402), and a connecting rod (403) is in rotary connection between the first sliding plate (109) and the second sliding plate (110).
5. The device of claim 4, wherein the device comprises: the second threaded rod (4) penetrates through the front face of the first sliding plate (109) and extends outwards, a rotating wheel (406) is fixedly connected to one extending end of the second threaded rod, the connecting rod (403) is rotatably connected to the upper surface of the nut seat (401), the other end of the connecting rod (403) is rotatably connected to the lower surface of the second sliding plate (110), an arc-shaped limiting block (404) is slidably connected to the inner wall of the first sliding plate (109), and the upper end of the arc-shaped limiting block (404) penetrates through the upper surface of the first sliding plate (109).
6. The device of claim 5, wherein the device comprises: one side of the arc-shaped limiting block (404) is meshed with the outer surface of the second threaded rod (4), the other side of the arc-shaped limiting block (404) is fixedly connected with a second spring (405), the other end of the second spring (405) is fixedly connected to the inner wall of the first sliding plate (109), and the second spring (405) is in a compressed state all the time.
7. The device of claim 6, wherein the device comprises: the upper surface of the second sliding plate (110) is fixedly connected with a third spring (502), the third spring (502) is arranged inside the fixed frame (5), the upper surface of the third spring (502) is fixedly connected with a moving block (501), the moving block (501) is connected to the inner wall of the fixed frame (5) in a sliding mode, the upper surface of the moving block (501) is fixedly connected with a contact block (503), limiting holes are formed in two sides of the fixed frame (5), the fixed frame (5) is located under the fixed base (3), an inductor is arranged above the contact block (503), and the induction fixed connection is formed in the inner top wall of the shell (1).
8. The device of claim 7, wherein the device comprises: the all sliding connection in both sides of fixing base (3) has fixture block (301), two the equal sliding connection in upper end of fixture block (301) is on the interior roof of shell (1), two the equal fixedly connected with first spring (302) in one side that fixture block (301) carried on the back mutually, the opposite side fixed connection of first spring (302) is on the inner wall of shell (1), fixture block (301) is in the equal fixedly connected with in both sides that the external world carried on the back mutually and draws piece (303).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111268366.3A CN114061744B (en) | 2021-10-29 | 2021-10-29 | Noise monitoring device for library on-site security maintenance |
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| CN202111268366.3A CN114061744B (en) | 2021-10-29 | 2021-10-29 | Noise monitoring device for library on-site security maintenance |
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| CN213180334U (en) * | 2020-11-19 | 2021-05-11 | 河北华准检测技术有限公司 | Portable noise monitor |
| US20210183227A1 (en) * | 2015-09-25 | 2021-06-17 | Conservation Labs, Inc. | Sound monitoring system |
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2021
- 2021-10-29 CN CN202111268366.3A patent/CN114061744B/en active Active
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| US20210183227A1 (en) * | 2015-09-25 | 2021-06-17 | Conservation Labs, Inc. | Sound monitoring system |
| CN213180334U (en) * | 2020-11-19 | 2021-05-11 | 河北华准检测技术有限公司 | Portable noise monitor |
Non-Patent Citations (2)
| Title |
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| 刘石: "基于ARM的图书馆噪声无线监测系统", 计算机工程应用技术, vol. 5, no. 2, 31 January 2009 (2009-01-31), pages 460 - 468 * |
| 杨明祎;张清扬;高辰洋;: "基于STM32的图书馆人为噪音监测及告知系统", 电子测试, no. 10, 15 May 2020 (2020-05-15), pages 5 - 8 * |
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