CN110298989A - A kind of laboratory safety device - Google Patents

A kind of laboratory safety device Download PDF

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Publication number
CN110298989A
CN110298989A CN201910398390.5A CN201910398390A CN110298989A CN 110298989 A CN110298989 A CN 110298989A CN 201910398390 A CN201910398390 A CN 201910398390A CN 110298989 A CN110298989 A CN 110298989A
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CN
China
Prior art keywords
laboratory
master controller
access control
lamp
control equipment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910398390.5A
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Chinese (zh)
Inventor
迟海鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Dynaflow Experiment Technology Co Ltd
Original Assignee
Beijing Dynaflow Experiment Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Dynaflow Experiment Technology Co Ltd filed Critical Beijing Dynaflow Experiment Technology Co Ltd
Priority to CN201910398390.5A priority Critical patent/CN110298989A/en
Publication of CN110298989A publication Critical patent/CN110298989A/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19602—Image analysis to detect motion of the intruder, e.g. by frame subtraction
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19617—Surveillance camera constructional details
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19654—Details concerning communication with a camera
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • 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
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • 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

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  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The present invention provides a kind of laboratory safety devices, it include: host, it is mounted in laboratory, comprising: casing, its external front face is equipped with touch liquid crystal display, interior to be equipped with master controller, and exterior lateral sides are equipped with environmental detection set, its outer tip end is equipped with cam device, and cam device is equipped with infrared sensor of the human body；Environmental detection set includes: Smoke Detection sensor, Temperature Humidity Sensor and gas sensor；Light detecting device is located at experiment room illumination lamp；Access control equipment is located on the outside of the doorway of laboratory；Touch liquid crystal display, Smoke Detection sensor, Temperature Humidity Sensor, gas sensor, light detecting device, infrared sensor of the human body, cam device, access control equipment are connect with master controller；Acoustic-optic alarm is mounted in laboratory, and is wirelessly communicated and connected with master controller；Master controller is also connected with cloud server, and cloud server is connected with remote monitoring terminal.The present invention has safety protection function diversification advantage.

Description

A kind of laboratory safety device
Technical field
The present invention relates to safety device technical field, in particular to a kind of laboratory safety device.
Background technique
Currently, the security protection for promoting all kinds of laboratories is the highly important common recognition for having become people.But it is domestic The security protection system in the most of laboratories of colleges and universities is also only fire-fighting equipment fire prevention, door and window is mechanical or common camera monitors Formula is antitheft, and there are also the laboratory safety securitrons based on digital-to-analog circuit or single-chip microcontroller building, such as commonly Gate inhibition, have the safety devices of the functions such as pilferage or pyrotechnics automatic alarm.But these laboratory safety device security protection kinds Class is relatively simple, and safeguard function is not comprehensive, such as: function of monitoring air quality does not have, does not have and supervise to laboratory telesecurity Control function.
Summary of the invention
The present invention provides a kind of laboratory safety device, single to solve existing laboratory safety device safeguard function Problem.
A kind of laboratory safety device, comprising:
Host, the host are mounted in laboratory, and the host includes: casing, and the casing external front face is equipped with touching Control formula liquid crystal display, the casing is interior to be equipped with master controller, and the casing exterior lateral sides are equipped with environmental detection set, the machine Shell outer tip end is equipped with cam device, and the cam device is equipped with infrared sensor of the human body；
The environmental detection set includes: Smoke Detection sensor, Temperature Humidity Sensor and gas sensor；
Light detecting device, the light detecting device is mounted at experiment room illumination lamp, for acquiring luminous lamp switch Status data；
Access control equipment, the access control equipment are arranged on the outside of the doorway of laboratory；
The touch liquid crystal display, Smoke Detection sensor, Temperature Humidity Sensor, gas sensor, light detection Device, infrared sensor of the human body, cam device, access control equipment are connect with master controller；
Acoustic-optic alarm, the acoustic-optic alarm are mounted in laboratory, and are wirelessly communicated and connected with master controller；
The master controller is also connected with cloud server, and the cloud server is connected with remote monitoring terminal.
Preferably, the gas sensor includes: shell, and the shell is equipped with gas access and gas vent, described It is equipped with the gas passage of connection gas access and gas vent in shell, mini fan is installed in the gas passage, institute It states and is equipped with gas detection chamber in gas passage between mini fan import and gas access, the mini fan goes out Mouth is connected to gas vent, described to state setting dustproof and waterproof filter screen between gas access and gas detection chamber；It is described dust-proof The production method of water repellent filter net the following steps are included:
Step 1: heat sensitive adhesive tape being set in glass sheet substrate, forms dustproof and waterproof filtering on the bonding plane of heat sensitive adhesive tape The mesh of net, the dustproof and waterproof filter screen is formed using thermoplastic nano-imprinting method；
The step 1 includes:
Step 11: photoresist is set on the bonding plane of heat sensitive adhesive tape；
Step 12: the photoresist being imprinted using thermoplastic nano-imprinting method, to form the dustproof and waterproof mistake Strainer；
Step 13: the dustproof and waterproof filter screen that heating etching is formed, so that it solidifies；
Step 2: the dustproof and waterproof filter screen that the step 1 is formed is transferred on self-adhesive film；
Pass through bonding connection when the dustproof and waterproof filter screen uses on gas sensor at gas access, the gas Binder is set at gas access on sensor, the cohesive force of the binder and the dustproof and waterproof filter screen be greater than it is described from The cohesive force of mucous membrane and the dustproof and waterproof filter screen.
Preferably, the acoustic-optic alarm includes:
From top to bottom sequentially connected lamp cap, lamp body, lamp holder；
Lamp body, the lamp body include hollow columnar shell, and the hollow columnar interior of shell is equipped with sound-light alarm control Device and battery, the sound-light alarm controller are equipped with the first WIFI communication module, and the master controller is equipped with second WIFI wireless communication module, the first WIFI wireless communication module and the 2nd WIFI wireless communication module communicate to connect；
The charging connector that the lamp body side wall is equipped with switch button and connect with the battery；
The lamp holder includes bottom mounting base, and bottom mounting base bottom surface circumferentially offers several magnet mounting grooves, Magnet is installed in the magnet mounting groove；
Hollow columnar shell bottom end is equipped with bottom mounting base mounting groove, and the bottom mounting base is inlaid in the bottom On mounting base mounting groove；
The lamp cap includes hollow lampshade, and the hollow lampshade is mounted on the hollow columnar shell, the hollow lamp Mounting plate is installed, the mounting plate is equipped with several LED light, is equipped with mounting hole, the mounting hole at the top of the lampshade in cover Buzzer is inside installed；
The sound-light alarm controller is connect with the LED light, buzzer, battery, switch button.
Preferably, the chassis sidewall be equipped with multiple heat release holes, the master controller also with experiment indoor air exchange system with And illuminating lamp control system connection；
The light detecting device is lamplight detector, and the lamplight detector acquires luminous lamp switch data information and will It is transferred to master controller；
The infrared sensor of the human body detects the infrared ray of the human-body emitting in laboratory by infrared probe, will detect Infrared ray be converted to level signal, and the level signal is transferred to the master controller；
The luminous lamp switch data information, the level signal are transferred to cloud server by the master controller, institute State whether cloud server is opened according to luminous lamp switch data judgment experiment indoor lamp；
The intensity and preset infrared intensity threshold value of the cloud server level signal are preset when it is greater than Infrared intensity threshold value, then judge infrared sensor of the human body triggering, someone and personage is active, on the contrary then judgment experiment room without People；
When cloud server judgment experiment room nobody, and judgment experiment room lamp open, then cloud server generate alarm signal Number and alarm signal is transferred to remote monitoring terminal.
Preferably, the access control equipment includes:
Access control equipment main body, the positive lower part of the access control equipment main body are fixedly installed with fingerprint collecting plate, the gate inhibition The Fingerprint Identification Unit connecting with fingerprint collecting plate is correspondingly provided in equipment body；
The front upper of the access control equipment main body is equipped with magnetic card induction zone, the inner upper end pair of the access control equipment main body Magnetic card induction zone is answered to be fixedly connected with card reader；
The positive Middle face of the access control equipment main body is equipped with liquid crystal display；
First camera, first camera are fixedly connected on access control equipment body top；
Access controller, the access controller are fixedly connected on access control equipment body interior lower end；
First bluetooth module, first bluetooth module are arranged in access control equipment body interior；
Rechargeable battery, the rechargeable battery setting is in access control equipment body interior and is located at access controller upper end, described Access control equipment body side upper end is equipped with the charging interface connecting with the rechargeable battery；
The access controller respectively with Fingerprint Identification Unit, card reader, liquid crystal display, the first camera, the first bluetooth Module, rechargeable battery connection, the master controller are equipped with the second bluetooth module, first bluetooth module and the second bluetooth mould Block connection, the access controller output end are also connect with laboratory door lock；
The access control equipment main body back side is additionally provided with the attachment device with wall connecting on the outside of the doorway of laboratory.
Preferably, the attachment device includes:
Link block, the link block are fixedly connected on the back side of access control equipment main body, and the lower end of the link block is equipped with peace Be loaded slot；
Mounting base, the mounting base are connected on the outside of the doorway of laboratory on wall by attaching nut, the mounting base Upper end is fixedly connected with the second connecting rod, and second connecting rod is flexibly connected with installation card slot.
Preferably, the cam device includes:
Cam device main body；
Mounting rack, the mounting rack setting are used in cam device body top by cam device main body and casing Connection；
Shield, the shield rotational installation are set at position among the bottom of cam device main body, the shield There is a sealing accommodation space；
Rotating ring, the rotating ring are arranged in the top of shield, the top opening of the shield, the shield Open top end inner wall is bonded one layer of layer of silica gel, and the shield is buckled by layer of silica gel in rotating ring, and the rotating ring turns It is dynamic to be installed in the rotation chamber that cam device body outer wall opens up；
The top of the rotating ring is equipped at least one vertical through holes, the bottom of the vertical through holes along the circle of rotating ring one It is communicated with the sealing accommodation space, a cleaning plectrum is inserted into each vertical through holes, clean inner end and the camera shooting of plectrum The outer wall contact of head apparatus main body.
Camera, the camera is arranged in cam device bottom part body, and is located in the sealing accommodation space, institute Driving motor driving rotation of the camera by cam device body interior is stated, the driving motor is connect with master controller；
First connecting rod, the first connecting rod are fixed on shield bottom, the first connecting rod top and camera Bottom is fixedly connected, in the axis hole for the connecting bushing that the fixed insertion shield bottom surface in the first connecting rod bottom is fixedly connected.
It preferably, further include face identification device, the face identification device setting enters in laboratory emphasis equipment region At mouthful, the face identification device is connect with master controller, and the face identification device is set for obtaining into laboratory emphasis The human face image information of personnel in the domain of preparation area, and send it to master controller；The face recognition process of the master controller Include:
S1: the master controller determines the identity information of the personnel, the identity information according to the human face image information Including at least identity type and ID number；
S2: the master controller judges whether the identity type of the personnel is associated with the permission list of default storage, described Permission list has permission personnel's list into laboratory emphasis equipment region；
S3: if association, judges whether the personnel can enter laboratory emphasis equipment region according to the ID number；
The S3 includes:
S31: the permission region of the personnel is determined according to the ID number；
S32: judge the laboratory emphasis equipment region whether in the range of the permission region；
S33: if laboratory emphasis equipment region is in the range of the permission region, it is determined that the personnel can enter real Test room emphasis equipment region；
S4: if not being associated with, judge that the personnel whether there is the interim list to match, the interim list is to call to be somebody's turn to do Personnel enter the list of laboratory emphasis equipment region, which is interim call to laboratory emphasis equipment region, database In do not save the information of the personnel；
S5: if it does not exist, then main controller controls acoustic-optic alarm is alarmed, while main controller leads to warning message It crosses cloud server and is sent to remote monitoring terminal.
Preferably, the acoustic-optic alarm includes light alarm system, and the light alarm system includes: alarm lamp, alarm Lamp drive circuit, overvoltage crowbar, power amplification circuit；
The alarm lamp connection alarm lamp drive circuit output end, the alarm lamp drive circuit input terminal connection over-voltage are protected Output end, the power amplification circuit of protection circuit；
The overvoltage crowbar includes:
Diode, the anode of the diode connect the positive input terminal of the overvoltage crowbar, the yin of the diode Pole connects the cathode of adjustable reference voltage source by first resistor；
The reference pole of the adjustable voltage a reference source connects the cathode of itself, the anode connection of the adjustable reference voltage source The negative input end of the overvoltage crowbar；
The cathode of operational amplifier, the adjustable voltage a reference source is also connected with the negative input end of operational amplifier；
Second resistance, described second resistance one end connect positive input terminal and the 5th resistance one end of the operational amplifier, The 5th resistance other end is separately connected the anode of the negative output terminal of the overvoltage crowbar, the adjustable voltage a reference source And ground connection, the second resistance other end connect the positive input terminal of the overvoltage crowbar；
3rd resistor, the 3rd resistor are connected across between the positive input terminal and output end of the operational amplifier；
Field effect transistor, the positive output end of the source electrode connection overvoltage crowbar of the field effect transistor, the fortune The output end for calculating amplifier connects the grid of the field effect transistor, and the drain electrode of the field effect transistor connects the over-voltage Protect the positive input terminal of circuit；
4th resistance, the 4th resistance are connected across between the drain electrode and grid of the field effect transistor；
The power amplification circuit includes:
Power amplifier, the power amplifier are put to receive an input signal and a bias voltage signal, the power Big device generates an amplified signal according to the input signal；
The power amplifier includes: the first transistor, second transistor, the first transistor and second crystal Pipe coupled in series, the grid of the first transistor is to receive the input signal；
Bias adjustment circuit, the bias adjustment circuit and the power amplifier couple, the bias adjustment circuit packet Include: an envelope detector to receive the input signal, and exports an envelope of the input signal accordingly；One differential puts Big device, the voltage of the drain electrode to receive the envelope and the first transistor, and a differential amplified signal is exported accordingly；Its In, which is used to as the bias voltage signal；
The grid of the second transistor is connect with the output end of the bias adjustment circuit, to receive the bias letter Number, the drain electrode of the first transistor and the coupling of the source electrode of the second transistor, to receive the bias voltage signal, described the The drain electrode of two-transistor is connected to power supply and the drain electrode to export the amplified signal via the 6th resistance.
Technical solution of the present invention has the advantage that smoke condition data letter in Smoke Detection sensor acquisition laboratory Main controller is ceased and sends it to, Temperature Humidity Sensor acquires data of the Temperature and Humidity module information in laboratory and sends it to master control Device, gas sensor acquire toxic, harmful gas concentration information in Laboratory Air and send it to controller, controller Cloud server is transmitted these information to, cloud server is stored with the corresponding threshold value of these information, and cloud server compares These information threshold value corresponding with its, when these information are greater than its corresponding threshold value, cloud server sends warning message to master Controller and remote monitoring terminal, main controller controls acoustic-optic alarm is alarmed, and warning message is passed through touch-control Formula liquid crystal display is shown that experiment indoor occupant can carry out emergency processing, smoke condition number according to relative alarm information It is believed that breath, data of the Temperature and Humidity module information, toxic, harmful gas concentration information are shown also by touch liquid crystal display, convenient for looking into It sees and according to data emergency processing；Smoke condition data, data of the Temperature and Humidity module, toxic and harmful gas concentration information are acquired, acquisition Data are more, so that safety protection function is diversified, and warning message is transmitted to remote monitoring terminal, when laboratory nobody, it is long-range to monitor Terminal management personnel can also take related emergency measure, so that laboratory is safer, the device security effect is good.
Pass through access control equipment intelligent control laboratory door switch；Believed by personnel in infrared sensor of the human body test experience room Breath, acquires luminous lamp switch data information by light detecting device, acquires video information in laboratory by cam device, And these information are transferred to remote monitoring terminal by master controller, cloud server, and it is convenient for long-range monitoring experiment room, it is above Further improve security effect.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is logical construction schematic diagram of the present invention.
Fig. 2 is the structural schematic diagram of invention host.
Fig. 3 is a kind of overall structure diagram of embodiment of gas sensor of the present invention.
Fig. 4 is the structural decomposition diagram of the gas sensor of Fig. 3.
Fig. 5 is a kind of structural schematic diagram of embodiment of cam device of the present invention.
Fig. 6 is the structural schematic diagram that cam device main body is connect with mounting rack in Fig. 5；
Fig. 7 is the top view of shield in Fig. 5.
Fig. 8 is a kind of cross-sectional view of embodiment of acoustic-optic alarm of the present invention.
Fig. 9 is the structural decomposition diagram of acoustic-optic alarm in Fig. 8.
Figure 10 is a kind of structural schematic diagram of embodiment of access control equipment of the present invention.
Figure 11 is the left view of Figure 10.
Figure 12 is the structural schematic diagram of wall connecting on the outside of the access control equipment and laboratory doorway of Figure 10.
Figure 13 is a kind of structural schematic diagram of embodiment of attachment device.
Figure 14 is the circuit diagram of light alarm system of the present invention.
In figure: 1, casing；2, touch liquid crystal display；31, Smoke Detection sensor；32, Temperature Humidity Sensor；33, Gas sensor；331, shell；332, gas detection chamber；333, gas access；334, gas vent；335, air-introduced machine； 336, dustproof and waterproof filter screen；4, cam device；41, mounting rack；42, cam device main body；43, plectrum is cleaned；44, it revolves Change；45, shield；46, connecting bushing；47, first connecting rod；48, camera；49, layer of silica gel；410, vertical through holes；5, Master controller；6, light detecting device；7, access control equipment；71, access control equipment main body；72, wall on the outside of the doorway of laboratory；73, Magnetic card induction zone；74, fingerprint collecting plate；75, link block；76, card slot is installed；77, card reader；78, rechargeable battery；79, fingerprint Identifier；710, access controller；711, attaching nut；712, mounting base；713, the second connecting rod；714, liquid crystal display； 715, fixing seat；7151, spreader；7152, elongate aperture；7153, column；716, connecting plate；7161, transverse slat；7162, stringer board； 717, threaded hole；8, acoustic-optic alarm；81, lamp holder；811, bottom mounting base；812, magnet；813, magnet mounting groove；82, Lamp body；821, hollow columnar shell；822, sound-light alarm controller；823, battery；824, switch button；825, charging Head；83, lamp cap；831, hollow lampshade；832, mounting plate；833, LED light；834, buzzer；835, mounting hole；836, bias tune Whole circuit；8361, envelope detector；8362, differential amplifier；837, the grid of the first transistor；838, connecting node；839, Alarm lamp drive circuit；840, alarm lamp；841, field effect transistor；842, diode；843, adjustable voltage a reference source；844, Operational amplifier；845, the first transistor；846, second transistor；9, remote monitoring terminal；10, cloud server.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
A kind of laboratory safety device, comprising:
Host, the host are mounted in laboratory, and the host includes: casing 1, and 1 outside of casing, 1 front is equipped with Touch liquid crystal display 2, the casing 1 is interior to be equipped with master controller 5, and 1 exterior lateral sides of casing are equipped with environmental detection set, 1 outer tip end of casing is equipped with cam device 4, and the cam device 4 is equipped with infrared sensor of the human body 11；
The environmental detection set includes: Smoke Detection sensor 31, Temperature Humidity Sensor 32 and gas sensor 33；
Light detecting device 6, the light detecting device 6 are mounted at experiment room illumination lamp, open for acquiring headlamp Off status data；
Access control equipment 7, the access control equipment 7 are arranged on the outside of the doorway of laboratory, and the access control equipment 7 is used for intelligent control The open and close of laboratory door；
The touch liquid crystal display 2, Smoke Detection sensor 31, Temperature Humidity Sensor 32, gas sensor 33, lamp Optical detection device 6, infrared sensor of the human body 11, cam device 4, access control equipment 7 are connect with master controller, pass through main control Device controls work, and such as control opens and closes, and carries out data transmission between main controller 5；
The cam device 4 is for acquiring video information in laboratory and being transmitted to master controller 5；The human body Infrared sensor 11 detects the infrared ray of the human-body emitting in laboratory by infrared probe, and the infrared ray detected is converted to Level signal, and the level signal is transferred to the master controller 5；The Smoke Detection sensor 31 is for acquiring experiment Indoor smog status data information simultaneously sends it to main controller 5；The Temperature Humidity Sensor 32 is for acquiring experiment Indoor Temperature Humidity data information simultaneously sends it to main controller 5；The gas sensor 33 for acquire in Laboratory Air it is toxic, have Evil gas concentration information simultaneously sends it to master controller 5.
Acoustic-optic alarm 8 is alarmed for sound, light, and the acoustic-optic alarm 8 is mounted in laboratory, and and master control The wireless communication of device 5 connection processed；
The master controller 5 is also connected with cloud server 10, the cloud server 10 and 9 phase of remote monitoring terminal Even.Remote monitoring terminal 9 is mobile phone or computer etc..
The working principle of above-mentioned technical proposal and have the beneficial effect that Smoke Detection sensor 31 acquire laboratory in smoke-like State data information simultaneously sends it to main controller, and Temperature Humidity Sensor 32 acquires data of the Temperature and Humidity module information in laboratory and sent out Main controller is given, gas sensor 33 acquires toxic, harmful gas concentration information in Laboratory Air and sends it to control Device processed, master controller transmit these information to cloud server 10, and cloud server 10 is stored with the corresponding threshold of these information Value, cloud server 10 compare these information threshold value corresponding with its, when these information are greater than its corresponding threshold value, cloud service Device 10 sends warning message to master controller 5 and remote monitoring terminal 9, and master controller 5 controls acoustic-optic alarm 8 and reported It warns and shows warning message by touch liquid crystal display 2, experiment indoor occupant can be believed according to relative alarm Breath carries out emergency processing, and smoke condition data information, data of the Temperature and Humidity module information, toxic, harmful gas concentration information are also by touching Control formula liquid crystal display 2 is shown, convenient for checking and according to data emergency processing；Acquisition smoke condition data, have data of the Temperature and Humidity module Malicious harmful gas concentration information, the data of acquisition are more, so that safety protection function is diversified, and warning message is transmitted to long-range monitoring eventually End 9, when laboratory nobody, 9 administrative staff of remote monitoring terminal can also take related emergency measure so that laboratory is safer, So that the device security effect is good.
Pass through 7 intelligent control laboratory door switch of access control equipment；Pass through people in 11 test experience room of infrared sensor of the human body Member's information acquires luminous lamp switch data information by light detecting device 6, is acquired in laboratory and regarded by cam device 4 Frequency information, and these information are transferred to remote monitoring terminal 9 by master controller 5, cloud server 10, realize long-range monitoring Laboratory Function further improves security effect above.
In one embodiment, the gas sensor 33 includes: shell 331, and the shell 331 is equipped with gas access 333 and gas vent 334, the gas passage of connection gas access 333 and gas vent 334 is equipped in the shell 331, it is described Mini fan 335 is installed in gas passage, is located at 335 import of mini fan and gas access in the gas passage Gas detection chamber 332 is equipped between 333, the outlet of mini fan 335 is connected to gas vent 334, described to state gas Dustproof and waterproof filter screen 336 is set between entrance 333 and gas detection chamber 332.
The working principle of above-mentioned technical proposal are as follows: the fan blade of air-introduced machine 335 operates in gas passage, and room air is passed through Gas access 333 sucks in gas detection chamber 332, while the air sucked first passes around the removal of dustproof and waterproof filter screen 336 Dust and moisture in air, remove dust and moisture in air to detect it is more acurrate, subsequently into gas detection chamber 332 In, techniques, this gas detection chamber 332 such as tested and analyzed, while being electrochemically reacted in gas detection chamber 332 For detachable structure can be set as, so as to regularly replace the gas detection chamber 332, to keep the work of gas sensor 33 can It leans on, it can be ensured that the accuracy of detection nocuousness or toxic gas.
The production method of the dustproof and waterproof filter screen 336 the following steps are included:
Step 1: heat sensitive adhesive tape is set in glass sheet substrate, and using glass sheet substrate, surfacing enables to prevent Dirt water repellent filter net 336 is smooth, and dustproof and waterproof filter screen 336, the dustproof and waterproof mistake are formed on the bonding plane of heat sensitive adhesive tape The mesh of strainer 336 is formed using thermoplastic nano-imprinting method；Heat sensitive adhesive tape, using aluminium foil Compound Fabric as substrate, even spread is high The dedicated heat-sensitive glue of performance has the advantages that peel strength is high, tack is good, cohesive force is outstanding, weathering performance is good, and heat sensitive adhesive tape is adding Viscosity can be lost under heat to specific temperature.
The step 1 includes:
Step 11: photoresist is set on the bonding plane of heat sensitive adhesive tape；
Step 12: the photoresist being imprinted using thermoplastic nano-imprinting method, to form the dustproof and waterproof mistake Strainer 336；Preferably, the size of the mesh of dustproof and waterproof filter screen 336 is less than or equal to 30 μm, and the mesh of the size on the one hand can More effectively to prevent the entrance of dust and water, and on the other hand the size can make dustproof and waterproof filter screen 336 have foot Enough structural strengths.
Step 13: the dustproof and waterproof filter screen 336 that heating etching is formed, so that it solidifies；
Step 2: the dustproof and waterproof filter screen 336 that the step 1 is formed is transferred on self-adhesive film；By way of heating Reduce the cohesive force between dustproof and waterproof filter screen 336 and heat sensitive adhesive tape, in order to be transferred on self-adhesive film, self-adhesive film is made into Self-adhesive coiled material structure.
Pass through bonding connection when the dustproof and waterproof filter screen 336 uses on gas sensor 33 at gas access 333, Binder, the binder and the dustproof and waterproof filter screen 336 are set at gas access 333 on the gas sensor 33 Cohesive force is greater than the cohesive force of the self-adhesive film and the dustproof and waterproof filter screen 336.
Above-mentioned technical proposal has the beneficial effect that above structure is simple, actively sucks room air and enters gas-detecting cavity Room 332 is detected, and active detecting can find that room air is harmful or toxic gas content is more than preset threshold value in time, and When take precautions against and remedy, avoid adversely affecting, and by dustproof and waterproof filter screen 336 remove air in dust and moisture, make Service life that is accurate and being able to extend gas sensor 33 must be detected.
The above method is easy to operate, and thermoplastic nano-imprinting method has easy to operate, the good feature of Forming Quality, and shape At dustproof and waterproof filter screen 336 mesh it is fine and closely woven, uniform, and can by the size of mesh limit within the set range, with Guarantee good dust and water protection effect.
In one embodiment, the acoustic-optic alarm 8 includes:
From top to bottom sequentially connected lamp cap 83, lamp body 82, lamp holder 81；
Lamp body 82, the lamp body 82 include hollow columnar shell 821, are installed inside the hollow columnar shell 821 sound Light alarm controller 822 and battery 823, the sound-light alarm controller 822 are equipped with the first WIFI communication module, the master Controller 5 is equipped with the 2nd WIFI wireless communication module, and the first WIFI wireless communication module and the 2nd WIFI are wirelessly communicated Module communication connection；
The charging connector 825 that 82 side wall of lamp body is equipped with switch button 824 and connect with the battery 823；
The lamp holder 81 includes bottom mounting base 811, and 811 bottom surface of bottom mounting base circumferentially offers several magnet Mounting groove 813, the magnet mounting groove 813 is interior to install magnet 812；
821 bottom end of hollow columnar shell is equipped with 811 mounting groove of bottom mounting base, and the bottom mounting base 811 is embedded in On 811 mounting groove of bottom mounting base；
The lamp cap 83 includes hollow lampshade 831, and the hollow lampshade 831 is mounted on the hollow columnar shell 821, Mounting plate 832 is installed, the mounting plate 832 is equipped with several LED light 833, the lampshade top in the hollow lampshade 831 Equipped with mounting hole 835, buzzer 834 is installed in the mounting hole 835；The sound-light alarm controller 822 and the LED light 833, buzzer 834, battery 823, switch button 824 connect.
The working principle of above-mentioned technical proposal are as follows: sound-light alarm controller 822 and main controller pass through the first WIFI channel radio Believe that module and the 2nd WIFI wireless communication module realize wireless communication, transmits data and control command by wireless communication, with It is compared by connecting line connection, 8 installation site of acoustic-optic alarm by connecting line length constraint, acoustic-optic alarm 8 can root It is easy for installation according to needing to be installed to the different metal object surface in laboratory, and suitable installation site (i.e. acousto-optic report can be found It is not in block alarm light that alarm device 8, which places the position), it is installed to suitable position and makes warning effect good.
The acoustic-optic alarm 8 that has the beneficial effect that of above-mentioned technical proposal can according to need that be installed to laboratory different Metal object surface, it is easy for installation, and can find suitable installation site (i.e. acoustic-optic alarm 8 place the position will not go out Now block alarm light), it is installed to suitable position and makes warning effect good.
In one embodiment, 1 side wall of casing is equipped with multiple heat release holes, and the master controller 5 is also and in laboratory Wind-exchanging system and illuminating lamp control system connection, wind-exchanging system for realizing wind is changed in laboratory, use by illuminating lamp control system It is opened or closed in control experiment indoor illumination.
The light detecting device 6 is lamplight detector, and the lamplight detector acquisition luminous lamp switch data information is simultaneously It is transmitted to master controller 5；
The infrared sensor of the human body 11 detects the infrared ray of the human-body emitting in laboratory by infrared probe, will detect To infrared ray be converted to level signal, and the level signal is transferred to the master controller 5；
The luminous lamp switch data information, the level signal are transferred to cloud server 10 by the master controller 5, Whether the cloud server 10 is opened according to luminous lamp switch data judgment experiment indoor lamp；
The intensity and preset infrared intensity threshold value of the cloud server 10 level signal, when it is greater than in advance If infrared intensity threshold value, then judge that the infrared sensor of the human body 11 triggers, someone and personage is active, on the contrary then judgment experiment Room nobody；Usually it is greater than setting infrared detection duration when the duration of level signal, the trigger interval of level signal, which is less than, to be set Determine infrared detection time interval, then judges that the liveness of personage is bigger.
When 10 judgment experiment room of cloud server nobody, and judgment experiment room lamp open, then cloud server 10 generate report It warns signal and alarm signal is transferred to remote monitoring terminal 9.
The working principle of above-mentioned technical proposal are as follows: lamplight detector acquisition luminous lamp switch data information is simultaneously transmitted to Master controller 5, infrared sensor of the human body 11 are detected the infrared ray of the human-body emitting in laboratory by infrared probe, will detected Infrared ray be converted to level signal, and the level signal is transferred to the master controller 5, master controller 5 is by the photograph Bright lamp switch data and the level signal are transferred to cloud server 10, and cloud server 10 is sentenced according to lamp light switch data Whether disconnected laboratory lamp is opened, and cloud server 10 is sentenced by comparing the intensity and preset infrared intensity threshold value of level signal Disconnected laboratory has nobody, if 10 judgment experiment room of cloud server nobody, and judgment experiment room lamp is opened, then cloud server 10 generate alarm signals and alarm signal are transferred to remote monitoring terminal 9.
Above-mentioned technical proposal has the beneficial effect that the multiple heat release holes of setting radiate for 1 internal components of host machine casing, master control Device 5 processed is connect with wind-exchanging system and illuminating lamp control system, convenient for laboratory nobody when, controlled by remote monitoring terminal 9 Wind-exchanging system work processed and control headlamp open and close.Pass through lamplight detector, infrared sensor of the human body, main control The setting of device, cloud server, convenient for when laboratory nobody and lamp are opened, discovery alarm in time, remote monitoring terminal 9 is managed Personnel can be the order of remote control terminal input control (as closed headlamp), which is passed by cloud server 10 It is defeated by master controller 5, master controller 5 controls lighting control system work according to the control command and closes headlamp, thus Energy conservation.
In one embodiment, the access control equipment 7 includes:
Access control equipment main body 71, the positive lower part of the access control equipment main body 71 are fixedly installed with fingerprint collecting plate 74, institute The Fingerprint Identification Unit 79 for being correspondingly provided in access control equipment main body 71 and connecting with fingerprint collecting plate 74 is stated, Fingerprint Identification Unit 79 is for knowing The fingerprint of the other acquisition of fingerprint collecting plate 74 is simultaneously transferred to access controller 710；
The front upper of the access control equipment main body 71 is equipped with magnetic card induction zone 73, the inside of the access control equipment main body 71 Upper end corresponds to magnetic card induction zone 73 and is fixedly connected with card reader 77, and card reader 77 is for reading the magnetic card that magnetic card induction zone 73 is brushed Information is simultaneously transferred to access controller 710；
The positive Middle face of the access control equipment main body 71 is equipped with liquid crystal display 714；
First camera, first camera are fixedly connected on 71 top of access control equipment main body；
Access controller 710, the access controller 710 are fixedly connected on 71 interior lower end of access control equipment main body；
First bluetooth module, first bluetooth module are arranged inside access control equipment main body 71；
Rechargeable battery 78, the rechargeable battery 78 are arranged inside access control equipment main body 71 and are located at access controller 710 Upper end, the 71 side upper end of access control equipment main body are equipped with the charging interface connecting with the rechargeable battery 78；
The access controller 710 is imaged with Fingerprint Identification Unit 79, card reader 77, liquid crystal display 714, first respectively Head, the connection of the first bluetooth module, rechargeable battery 78, the master controller 5 are equipped with the second bluetooth module, the first bluetooth mould Block is connect with the second bluetooth module, and 710 output end of access controller is also connect with laboratory door lock, intelligent control laboratory Door-lock opening or closing；
71 back side of access control equipment main body is additionally provided with and wall 72 is connect on the outside of the doorway of laboratory attachment device.
The working principle of above-mentioned technical proposal are as follows: when in use, enabling can be incuded by magnetic card, fingerprint recognition is opened the door； Main controller 5 is connect with access controller 710 by the first bluetooth module, the second bluetooth module, and master controller 5 and long-range monitoring are eventually End 9 is connected by Cloud Server, and 9 administrator of remote monitoring terminal passes through cloud service in 9 input control order of remote monitoring terminal Device is transferred to master controller 5, and main controller 5 sends the control command to access controller 710, access controller 710 by bluetooth Control command is received, for example control two-dimensional code display order controls 714 surface two-dimensional code display of liquid crystal display, personnel's scanning Laboratory, for example control door shutdown command can be entered after two dimensional code, it can be achieved that long-range close the door, so that access control equipment 7 is safer； In addition it is powered using rechargeable battery 78, be can also be used when having a power failure, it is easy to use.
Above-mentioned technical proposal has the beneficial effect that the access control equipment 7 is opened the door by magnetic card induction, fingerprint recognition, Yi Jike Long-range control two-dimensional code display, is opened the door by scanning the two-dimensional code, door-opening mode diversification, so that in addition being used using more convenient Rechargeable battery 78 is powered, and can also be used when having a power failure, easy to use.
In one embodiment, the attachment device includes:
Link block 75, the link block 75 are fixedly connected on the back side of access control equipment main body 71, under the link block 75 End is equipped with installation card slot 76；
Mounting base 712, the mounting base 712 are connected on the outside of the doorway of laboratory on wall 72 by attaching nut 711, institute The upper end for stating mounting base 712 is fixedly connected with the second connecting rod 713, and second connecting rod 713 connects with 76 activity of installation card slot It connects, such as connects or be connected through a screw thread using snap.
Above-mentioned technical proposal has the beneficial effect that above structure is simple, is connected by the second connecting rod 713 with card slot activity It connects, consequently facilitating disassembly, thus maintenance easy to disassemble of getting off, maintenance facilitates and easy to disassemble gets off to place suitable position Charging, so that charging is convenient.
In one embodiment, the attachment device includes:
Fixing seat 715, the fixing seat 715 include: 1 spreader 7151；2 columns 7153,2 column 7153 is respectively from institute The both ends for stating spreader 7151 extend downwardly setting, and the connection of the column of 1 spreader 7151 and 2 7153 is in " П " shape structure, described solid 715 back side of reservation is fixedly connected on the outside of the doorway of laboratory on wall 72, i.e. 1 column of spreader 7151 and 2,7153 back side is fixed It is connected to wall on the outside of the doorway of laboratory, so that fixing seat 715 is connected firmly；
The upper surface of the spreader 7151 is equipped with vertical perforative elongate aperture 7152；
Connecting plate 716, the connecting plate 716 include transverse slat 7161 and the stringer board extended downwardly from the transverse slat 7161 7162,7161 upper surface of transverse slat is fixedly connected on the lower end surface of access control equipment main body 71, and the stringer board 7162 is mounted on institute It states in elongate aperture 7152；
The spreader 7151 and stringer board 7162 are correspondingly provided with multiple threaded holes 717, and the multiple threaded hole 717 is along spreader 7151 length directions are uniformly arranged, and are connect the stringer board 7162 with spreader 7151 using bolt.
Above-mentioned technical proposal has the beneficial effect that through above structure convenient for access control equipment main body 71 outside the doorway of laboratory The disassembly of side wall body 72 and connection, and by setting elongate aperture 7152, multiple threaded holes 717, so that access control equipment main body 71 It is connected firmly on the outside of the doorway of laboratory on wall 72.
In one embodiment, the cam device 4 includes:
Cam device main body 42；
Mounting rack 41, the setting of mounting rack 41 are used at 42 top of cam device main body by cam device main body 42 connect with casing 1；
Shield 45, the rotational installation of shield 45 is in the bottom of cam device main body 42, the shield 45 Between position be equipped with one sealing accommodation space；
The top of shield 45 is arranged in rotating ring 44, the rotating ring 44, and the top opening of the shield 45 is described The open top end inner wall of shield 45 is bonded one layer of layer of silica gel 49, and the shield 45 is buckled by layer of silica gel 49 in rotating ring In 44, the rotational installation of rotating ring 44 is in the rotation chamber that 42 outer wall of cam device main body opens up；
The top of the rotating ring 44 is equipped at least one vertical through holes 410 along the circle of rotating ring 44 1, described vertical logical The bottom in hole 410 is communicated with the sealing accommodation space, and a cleaning plectrum 43 is inserted into each vertical through holes 410, is cleaned and is dialled The inner end of piece 43 is contacted with the outer wall of cam device main body 42.It is transversal to clean plectrum 43 for preferably arc vertical through holes 410 Face is arc corresponding with 410 shape of arc vertical through holes, cleans rotary cleaning convenient for plectrum.
Camera 48, the camera 48 are arranged in 42 bottom of cam device main body, and are located at the sealing and accommodate sky In, which can be good at protecting camera 48, and the camera 48 passes through in cam device main body 42 The driving motor in portion drives rotation, and the driving motor is connect with master controller 5；
First connecting rod 47, the first connecting rod 47 are fixed on 45 bottom of shield, 47 top of first connecting rod It is fixedly connected with camera bottom, the connecting shaft that fixed insertion 45 bottom surface of shield in 47 bottom of first connecting rod is fixedly connected In the axis hole of set 46.
The working principle of above-mentioned technical proposal are as follows: driving motor work is controlled by main controller, drives camera camera Rotation can be rotated from multi-angle monitoring laboratory, camera so as to drive entire shield using first connecting rod 47 45 rotate along cam device main body 42, and when rotation, shield 45, which will drive, is inserted in at least a piece of of 45 top of shield Cleaning plectrum 43 along cam device main body 42 rotate, due to clean plectrum 43 inner end and cam device main body 42 Outer wall contact can remove the dust outside cam device main body 42 therefore during rotation using scraping blade is cleaned, make The accumulation for obtaining external free from dust is avoided being influenced the heat dissipation effect of cam device 4 due to dust, and influences cam device 4 Working performance.
Having the beneficial effect that through above structure for above-mentioned technical proposal, can remove the dust of photographic device body exterior, It avoids influencing the heat dissipation effect of cam device 4 due to dust, and influences the working performance of cam device 4.Using silica gel 49 sealing of layer has the advantages that sealing effect is good, so that the protection effect of shield 45 is good.
It in one embodiment, further include face identification device, the face identification device setting is set in laboratory emphasis At the realm entry of preparation area, the face identification device is connect with master controller, and the face identification device enters experiment for obtaining The human face image information of personnel in the emphasis equipment region of room, and send it to master controller；Face identification device can be used High-definition camera acquires human face image information；The face recognition process of the master controller includes:
S1: the master controller determines the identity information of the personnel, the identity information according to the human face image information Including at least identity type and ID number；
S2: the master controller judges whether the identity type of the personnel is associated with the permission list of default storage, described Permission list has permission personnel's list into laboratory emphasis equipment region；
S3: if association, judges whether the personnel can enter laboratory emphasis equipment region according to the ID number；
The S3 includes:
S31: the permission region of the personnel is determined according to the ID number；
S32: judge the laboratory emphasis equipment region whether in the range of the permission region；
S33: if laboratory emphasis equipment region is in the range of the permission region, it is determined that the personnel can enter real Test room emphasis equipment region；
S4: if not being associated with, judge that the personnel whether there is the interim list to match, the interim list is to call to be somebody's turn to do Personnel enter the list of laboratory emphasis equipment region, which is interim call to laboratory emphasis equipment region, database In do not save the information of the personnel；
S5: if it does not exist, then main controller controls acoustic-optic alarm is alarmed, while main controller leads to warning message It crosses cloud server and is sent to remote monitoring terminal.
Having the beneficial effect that for above-mentioned technical proposal acquires human face image information by setting face identification device, and passes through Whether controller multilevel iudge personnel can enter laboratory emphasis equipment region, avoid not allowing access into laboratory emphasis equipment The layman in region damages laboratory emphasis equipment.
In one embodiment, the acoustic-optic alarm 8 includes light alarm system, and the light alarm system includes: report Warning lamp 840, alarm lamp drive circuit 839, overvoltage crowbar, power amplification circuit；
As shown in figure 14, the connection of alarm lamp 840 alarm 839 output end of lamp drive circuit, the alarm lamp driving electricity Output end, the power amplification circuit of 839 input terminal of road connection overvoltage crowbar；
The overvoltage crowbar includes:
Diode 842, the anode of the diode 842 connect the positive input terminal of the overvoltage crowbar, two pole The cathode of pipe 842 passes through the cathode of first resistor R1 connection adjustable reference voltage source 843；
The reference pole of the adjustable voltage a reference source 843 connects the cathode of itself, the sun of the adjustable reference voltage source 843 Pole connects the negative input end of the overvoltage crowbar；
The cathode of operational amplifier 844, the adjustable voltage a reference source 843 is also connected with the negative input of operational amplifier 844 End；
The one end second resistance R2, the second resistance R2 connects the positive input terminal and the 5th electricity of the operational amplifier 844 The one end R5 is hindered, the 5th resistance R5 other end is separately connected the negative output terminal of the overvoltage crowbar, the adjustable voltage The anode of a reference source 843 and ground connection, the second resistance R2 other end connect the positive input terminal of the overvoltage crowbar；
3rd resistor R3, the 3rd resistor R3 be connected across the operational amplifier 844 positive input terminal and output end it Between；
Field effect transistor 841, the positive output end of the source electrode connection overvoltage crowbar of the field effect transistor 841, The output end of the operational amplifier 844 connects the grid of the field effect transistor 841, the field effect transistor 841 Drain electrode connects the positive input terminal of the overvoltage crowbar.
4th resistance R4, the 4th resistance R4 are connected across between the drain electrode and grid of the field effect transistor 841；It crosses The threshold voltage of voltage protection circuit is the reference voltage * (resistance value of the second resistance+the 5th resistance of benchmark voltage source Resistance value)/the second resistance resistance value；If the voltage value that the input terminal of overvoltage crowbar inputs is more than threshold voltage, should The output end Non voltage output of overvoltage crowbar, the overtension of protection late-class circuit load, if overvoltage crowbar is defeated The voltage value for entering end input is no more than threshold voltage, then the output point of the overvoltage crowbar normally exports the voltage of its input terminal Value.
The power amplification circuit includes:
Power amplifier, the power amplifier to receive an input signal (radio-frequency input signals V1 in such as Figure 14) with And a bias voltage signal, the power amplifier generate an amplified signal according to the input signal；
The power amplifier includes: the first transistor 845, second transistor 846, the first transistor 845 and institute 846 coupled in series of second transistor is stated, the grid 837 of the first transistor 845 is to receive the input signal；
Bias adjustment circuit 836, the bias adjustment circuit 836 are coupled with the power amplifier, the bias adjustment Circuit includes: an envelope detector 8361, to receive the input signal (radio-frequency input signals V1 in such as Figure 14), and accordingly Export an envelope V2 of the input signal；One differential amplifier 8362, to receive the envelope V2 and the first crystal The voltage Vd of the drain electrode of pipe 845, and a differential amplified signal, as shown in figure 14, the differential amplifier 8362 are exported accordingly Anode receives the envelope V2, the cathode of the differential amplifier 8362 connect with the drain electrode of the first transistor 845, to Receive the voltage Vd of the drain electrode of the first transistor 845；Wherein, which is used to as the bias voltage signal；
The grid of the second transistor 846 is connect with the output end of the bias adjustment circuit 836, described to receive Bias voltage signal, the drain electrode of the first transistor 845 couple with the source electrode of the second transistor 846, are described inclined to receive Signal, such as Figure 14 are pressed, the drain electrode of the first transistor 845 and the source electrode of the second transistor 846 couple to form connecting node 838, the drain electrode of the second transistor 846 is connected to power vd D via the 6th resistance and the drain electrode is to export amplification letter Number.Wherein, common source of the first transistor 845 as power amplifier, total grid of the second transistor 846 as power amplifier Pole.
The working principle of above-mentioned technical proposal and have the beneficial effect that the resistance value tune according to second resistance R2 and the 5th resistance R5 The voltage of the positive input terminal of operational amplifier 844 is saved, which is the threshold voltage of overvoltage crowbar, the electricity of input terminal input Pressure directly drives alarm lamp less than the voltage that the threshold voltage can use input, operational amplifier 844 and third electricity It hinders R3 and constitutes hysteresis loop comparator, comparison circuit the operation is stable, the output voltage stabilization of operational amplifier is not in showing for shake As.First resistor R1 and adjustable voltage a reference source 843 form threshold voltage generative circuit；When the voltage of input terminal input is greater than threshold Threshold voltage, the output switching activity of operational amplifier 844, field effect transistor 841 end, and turn off output loop, play to alarm lamp Protective effect；
Above-mentioned power amplification circuit may make the crystalline substance of common source in power amplifier by setting bias adjustment circuit 836 The drain voltage of body pipe is dynamically adjusted with input signal, to reduce drain electrode to the cross-pressure voltage of source electrode, and is no more than just Often operation voltage, can increase the service life of transistor, to increase the service life of power amplifier.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (10)

1. a kind of laboratory safety device characterized by comprising
Host, the host are mounted in laboratory, and the host includes: casing, and the casing external front face is equipped with touch Liquid crystal display, is equipped with master controller in the casing, and the casing exterior lateral sides are equipped with environmental detection set, outside the casing Portion top is equipped with cam device, and the cam device is equipped with infrared sensor of the human body；
The environmental detection set includes: Smoke Detection sensor, Temperature Humidity Sensor and gas sensor；
Light detecting device, the light detecting device is mounted at experiment room illumination lamp, for acquiring luminous lamp switch state Data；
Access control equipment, the access control equipment are arranged on the outside of the doorway of laboratory；
The touch liquid crystal display, Smoke Detection sensor, Temperature Humidity Sensor, gas sensor, light detecting device, Infrared sensor of the human body, cam device, access control equipment are connect with master controller；
Acoustic-optic alarm, the acoustic-optic alarm are mounted in laboratory, and are wirelessly communicated and connected with master controller；
The master controller is also connected with cloud server, and the cloud server is connected with remote monitoring terminal.
2. a kind of laboratory safety device according to claim 1, which is characterized in that the gas sensor includes: shell Body, the shell are equipped with gas access and gas vent, the gas of connection gas access and gas vent are equipped in the shell Body channel is equipped with mini fan in the gas passage, is located at mini fan import and gas in the gas passage Gas detection chamber is equipped between entrance, the mini fan outlet is connected to gas vent, described to state gas access and gas Dustproof and waterproof filter screen is set between body detection chambers；The production method of the dustproof and waterproof filter screen the following steps are included:
Step 1: heat sensitive adhesive tape is set in glass sheet substrate, forms dustproof and waterproof filter screen on the bonding plane of heat sensitive adhesive tape, The mesh of the dustproof and waterproof filter screen is formed using thermoplastic nano-imprinting method；
The step 1 includes:
Step 11: photoresist is set on the bonding plane of heat sensitive adhesive tape；
Step 12: the photoresist being imprinted using thermoplastic nano-imprinting method, to form the dustproof and waterproof filter screen；
Step 13: the dustproof and waterproof filter screen that heating etching is formed, so that it solidifies；
Step 2: the dustproof and waterproof filter screen that the step 1 is formed is transferred on self-adhesive film；
Pass through bonding connection when the dustproof and waterproof filter screen uses on gas sensor at gas access, the gas sensing Binder is set at gas access on device, and the cohesive force of the binder and the dustproof and waterproof filter screen is greater than the self-adhesive film With the cohesive force of the dustproof and waterproof filter screen.
3. a kind of laboratory safety device according to claim 1, which is characterized in that the acoustic-optic alarm includes:
From top to bottom sequentially connected lamp cap, lamp body, lamp holder；
Lamp body, the lamp body include hollow columnar shell, the hollow columnar interior of shell be equipped with sound-light alarm controller and Battery, the sound-light alarm controller be equipped with the first WIFI communication module, the master controller be equipped with the 2nd WIFI without Line communication module, the first WIFI wireless communication module and the 2nd WIFI wireless communication module communicate to connect；
The charging connector that the lamp body side wall is equipped with switch button and connect with the battery；
The lamp holder includes bottom mounting base, and bottom mounting base bottom surface circumferentially offers several magnet mounting grooves, described Magnet is installed in magnet mounting groove；
Hollow columnar shell bottom end is equipped with bottom mounting base mounting groove, and the bottom mounting base is inlaid in the bottom installation On seat mounting groove；
The lamp cap includes hollow lampshade, and the hollow lampshade is mounted on the hollow columnar shell, in the hollow lampshade Mounting plate is installed, the mounting plate is equipped with several LED light, and mounting hole, peace in the mounting hole are equipped at the top of the lampshade Equipped with buzzer；
The sound-light alarm controller is connect with the LED light, buzzer, battery, switch button.
4. a kind of laboratory safety device according to claim 1, which is characterized in that the chassis sidewall is equipped with multiple dissipate Hot hole, the master controller are also connect with experiment indoor air exchange system and illuminating lamp control system；
The light detecting device is lamplight detector, and the lamplight detector acquires luminous lamp switch data information and passed It is defeated by master controller；
The infrared sensor of the human body detects the infrared ray of the human-body emitting in laboratory by infrared probe, red by what is detected Outside line is converted to level signal, and the level signal is transferred to the master controller；
The luminous lamp switch data information, the level signal are transferred to cloud server, the cloud by the master controller Whether end server is opened according to luminous lamp switch data judgment experiment indoor lamp；
The intensity and preset infrared intensity threshold value of the cloud server level signal, when it is greater than preset red Outer intensity threshold, then judge infrared sensor of the human body triggering, someone and personage is active, on the contrary then judgment experiment room nobody；
When cloud server judgment experiment room nobody, and judgment experiment room lamp open, then cloud server generate alarm signal and Alarm signal is transferred to remote monitoring terminal.
5. a kind of laboratory safety device according to claim 1, which is characterized in that the access control equipment includes:
Access control equipment main body, the positive lower part of the access control equipment main body are fixedly installed with fingerprint collecting plate, the access control equipment The Fingerprint Identification Unit connecting with fingerprint collecting plate is correspondingly provided in main body；
The front upper of the access control equipment main body is equipped with magnetic card induction zone, and the inner upper end of the access control equipment main body corresponds to magnetic Card induction zone is fixedly connected with card reader；
The positive Middle face of the access control equipment main body is equipped with liquid crystal display；
First camera, first camera are fixedly connected on access control equipment body top；
Access controller, the access controller are fixedly connected on access control equipment body interior lower end；
First bluetooth module, first bluetooth module are arranged in access control equipment body interior；
Rechargeable battery, the rechargeable battery setting is in access control equipment body interior and is located at access controller upper end, the gate inhibition Equipment body side upper end is equipped with the charging interface connecting with the rechargeable battery；
The access controller respectively with Fingerprint Identification Unit, card reader, liquid crystal display, the first camera, the first bluetooth module, Rechargeable battery connection, the master controller are equipped with the second bluetooth module, and first bluetooth module and the second bluetooth module connect It connects, the access controller output end is also connect with laboratory door lock；
The access control equipment main body back side is additionally provided with the attachment device with wall connecting on the outside of the doorway of laboratory.
6. a kind of laboratory safety device according to claim 5, which is characterized in that the attachment device includes:
Link block, the link block are fixedly connected on the back side of access control equipment main body, and the lower end of the link block is equipped with installation card Slot；
Mounting base, the mounting base are connected on the outside of the doorway of laboratory on wall by attaching nut, the upper end of the mounting base It is fixedly connected with the second connecting rod, second connecting rod is flexibly connected with installation card slot.
7. a kind of laboratory safety device according to claim 5, which is characterized in that the attachment device includes:
Fixing seat, the fixing seat include: 1 spreader；2 columns, 2 column is extended downwardly from the both ends of the spreader respectively to be set It sets, 1 spreader and the connection of 2 columns are in " П " shape structure, and the fixing seat back side is fixedly connected on laboratory doorway external wall On body；
The upper surface of the spreader is equipped with vertical perforative elongate aperture；
Connecting plate, the connecting plate include transverse slat and the stringer board that extends downwardly from the transverse slat, and the transverse slat upper surface is fixed to be connected It connects in the lower end surface of access control equipment main body, the stringer board is mounted in the elongate aperture；
The spreader and stringer board are correspondingly provided with multiple threaded holes, and the multiple threaded hole is uniformly arranged along spreader length direction, adopts The stringer board is connect with spreader with bolt.
8. a kind of laboratory safety device according to claim 1, which is characterized in that the cam device includes:
Cam device main body；
Mounting rack, the mounting rack setting is in cam device body top, for cam device main body to be connect with casing；
Shield, shield rotational installation position among the bottom of cam device main body, the shield are equipped with one Seal accommodation space；
The top of shield, the top opening of the shield, the top of the shield is arranged in rotating ring, the rotating ring Open end inner wall is bonded one layer of layer of silica gel, and the shield is buckled by layer of silica gel in rotating ring, and the rotating ring rotation is pacified In the rotation chamber opened up loaded on cam device body outer wall；
The top of the rotating ring is equipped at least one vertical through holes, the bottom of the vertical through holes and institute along the circle of rotating ring one It states sealing accommodation space to communicate, a cleaning plectrum is inserted into each vertical through holes, the inner end and camera for cleaning plectrum fill Set the outer wall contact of main body.
Camera, the camera is arranged in cam device bottom part body, and is located in the sealing accommodation space, described to take the photograph It is rotated as head is driven by the driving motor of cam device body interior, the driving motor is connect with master controller；
First connecting rod, the first connecting rod are fixed on shield bottom, the first connecting rod top and camera bottom It is fixedly connected, in the axis hole for the connecting bushing that the fixed insertion shield bottom surface in the first connecting rod bottom is fixedly connected.
9. a kind of laboratory safety device according to claim 1, which is characterized in that it further include face identification device, institute Face identification device to be stated to be arranged in laboratory emphasis equipment region inlet, the face identification device is connect with master controller, The face identification device is used to obtain the human face image information for entering personnel in laboratory emphasis equipment region, and is sent out Give master controller；The face recognition process of the master controller includes:
S1: the master controller determines the identity information of the personnel according to the human face image information, and the identity information is at least Including identity type and ID number；
S2: the master controller judges whether the identity type of the personnel is associated with the permission list of default storage, the permission List has permission personnel's list into laboratory emphasis equipment region；
S3: if association, judges whether the personnel can enter laboratory emphasis equipment region according to the ID number；
The S3 includes:
S31: the permission region of the personnel is determined according to the ID number；
S32: judge the laboratory emphasis equipment region whether in the range of the permission region；
S33: if laboratory emphasis equipment region is in the range of the permission region, it is determined that the personnel can enter laboratory Emphasis equipment region；
S4: if not being associated with, judge that the personnel whether there is the interim list to match, the interim list is to call the personnel Into the list of laboratory emphasis equipment region, the personnel be it is interim call to laboratory emphasis equipment region, in database simultaneously The information of the personnel is not saved；
S5: if it does not exist, then main controller controls acoustic-optic alarm is alarmed, while warning message is passed through cloud by main controller End server is sent to remote monitoring terminal.
10. a kind of laboratory safety device according to claim 1, which is characterized in that the acoustic-optic alarm includes Light alarm system, the light alarm system include: alarm lamp, alarm lamp drive circuit, overvoltage crowbar, power amplification electricity Road；
The alarm lamp connection alarm lamp drive circuit output end, the alarm lamp drive circuit input terminal connection overvoltage protection electricity Output end, the power amplification circuit on road；
The overvoltage crowbar includes:
Diode, the anode of the diode connect the positive input terminal of the overvoltage crowbar, and the cathode of the diode is logical Cross the cathode of first resistor connection adjustable reference voltage source；
The reference pole of the adjustable voltage a reference source connects the cathode of itself, described in the anode connection of the adjustable reference voltage source The negative input end of overvoltage crowbar；
The cathode of operational amplifier, the adjustable voltage a reference source is also connected with the negative input end of operational amplifier；
Second resistance, described second resistance one end connects positive input terminal and the 5th resistance one end of the operational amplifier, described The 5th resistance other end be separately connected the negative output terminal of the overvoltage crowbar, the adjustable voltage a reference source anode and connect Ground, the second resistance other end connect the positive input terminal of the overvoltage crowbar；
3rd resistor, the 3rd resistor are connected across between the positive input terminal and output end of the operational amplifier；
Field effect transistor, the positive output end of the source electrode connection overvoltage crowbar of the field effect transistor, the operation are put The output end of big device connects the grid of the field effect transistor, and the drain electrode of the field effect transistor connects the overvoltage protection The positive input terminal of circuit；
4th resistance, the 4th resistance are connected across between the drain electrode and grid of the field effect transistor；
The power amplification circuit includes:
Power amplifier, the power amplifier is to receive an input signal and a bias voltage signal, the power amplifier According to the input signal to generate an amplified signal；
The power amplifier includes: the first transistor, second transistor, the first transistor and the second transistor string Connection coupling, the grid of the first transistor is to receive the input signal；
Bias adjustment circuit, the bias adjustment circuit and the power amplifier couple, and the bias adjustment circuit includes: one Envelope detector to receive the input signal, and exports an envelope of the input signal accordingly；One differential amplifier, To receive the voltage of the drain electrode of the envelope and the first transistor, and a differential amplified signal is exported accordingly；Wherein, should Differential amplified signal is used to as the bias voltage signal；
The grid of the second transistor is connect with the output end of the bias adjustment circuit, to receive the bias voltage signal, The drain electrode of the first transistor and the coupling of the source electrode of the second transistor, to receive the bias voltage signal, described second The drain electrode of transistor is connected to power supply and the drain electrode to export the amplified signal via the 6th resistance.
CN201910398390.5A 2019-05-14 2019-05-14 A kind of laboratory safety device Pending CN110298989A (en)

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CN111665177A (en) * 2020-06-11 2020-09-15 太原理工大学 Laboratory protection system based on object recognition, toxic gas and heat source detection
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CN111948996A (en) * 2020-08-12 2020-11-17 济南市疾病预防控制中心 Intelligent management system and method for biological safety laboratory
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Application publication date: 20191001