CN206541194U - A kind of machine room monitoring system based on ZigBee technology - Google Patents
A kind of machine room monitoring system based on ZigBee technology Download PDFInfo
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- CN206541194U CN206541194U CN201621168976.0U CN201621168976U CN206541194U CN 206541194 U CN206541194 U CN 206541194U CN 201621168976 U CN201621168976 U CN 201621168976U CN 206541194 U CN206541194 U CN 206541194U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model provides a kind of machine room monitoring system based on ZigBee technology, sensor is provided with, sensor is connected with single-chip microcomputer, and single-chip microcomputer is connected with RF transceiver, RF transceiver is connected by wireless network with ZigBee module, and ZigBee module is connected with server；Sensor includes Voltage measure, current measurer, temperature and humidity measurement device, noise measuring set, smog measuring instrument, vibrating sensing detector, gate monitor；Machine room monitoring system collects the ambient parameter that each sensor detection in computer room is obtained, be acquired processing by single-chip microcomputer controls CC2420 that the data collected are transferred to by radio sensing network in the ZigBee module being connected with server by single-chip microcomputer again, transferred data to by cable network on internet, information transmission to remote monitoring point is checked for manager, the hardship hurried back and forth of attendant is avoided, the efficiency of computer lab management is improved.
Description
Technical field
The utility model belongs to field of sensing technologies, more particularly to a kind of machine room monitoring system based on ZigBee technology.
Background technology
In recent years, the development with network technology and maturation, increasing company, school and family pay attention to digitlization and built
If factory and school are configured with a large amount of Computer networking center of China seismological bureau and computer room, left unguarded during these machinery room flats, simply when necessary
Do a little inspections.So it is difficult the state change for monitoring Computer networking center of China seismological bureau or computer room in real time, it is easy to bring some not
Necessary loss, such as someone be not by agreeing to steal data into Computer networking center of China seismological bureau or steal equipment, it is also possible in machine
Fire, which occurs, for room to detect in time.
The content of the invention
The purpose of this utility model is to provide a kind of machine room monitoring system based on ZigBee technology, it is intended to solve existing
The problem of center monitoring method can not monitor the state change of Computer networking center of China seismological bureau or computer room in real time.
The utility model is achieved in that a kind of machine room monitoring system based on ZigBee technology includes sensor, list
Piece machine, RF transceiver, ZigBee module, server；
The sensor is connected with the single-chip microcomputer, and the single-chip microcomputer is connected with the RF transceiver, and the radio frequency is received
Hair device is connected by wireless network with the ZigBee module, and the ZigBee module is connected with the server；
The sensor includes Voltage measure, current measurer, temperature and humidity measurement device, noise measuring set, smog measurement
Instrument, vibrating sensing detector, gate monitor；
The single-chip microcomputer be used for by sensor collection to data be sent to RF transceiver；
The RF transceiver is used to the data after handling through single-chip microcomputer being sent to ZigBee by radio sensing network
Module；
The ZigBee module is used to send the sensing data received to server by cable network.
Further, the Voltage measure is connected using a resistance with slide rheostat, is adopted at slide rheostat two ends
Sample, behind plus voltage order one follow, isolate with previous stage.
Further, the Temperature Humidity Sensor uses DHT11 sensors, and a pin of the DHT11 sensors meets GND,
One pin meets VCC, and a pin connects data/address bus, connect on the circuit connected with data/address bus 10K pull-up resistor and
One 1K resistance.
Machine room monitoring system collects the ambient parameter that each sensor detection in computer room is obtained, and is carried out by AVR single chip
Acquisition process controls CC2420 that the data collected are transferred into what is be connected with server by radio sensing network by AVR again
In ZigBee module, then transferred data on internet by the cable network built well, by these information transmissions extremely
Remote monitoring point is checked for manager, this not only avoids the hardship hurried back and forth of attendant, more improves the efficiency of computer lab management,
Prevent the generation of security incident.
Brief description of the drawings
Fig. 1 is the machine room monitoring system structure chart based on ZigBee technology that the utility model embodiment is provided.
Fig. 2 is the tension measuring circuit figure that the utility model embodiment is provided.
Fig. 3 is the current measurement circuit figure that the utility model embodiment is provided.
Fig. 4 is the voltage x current Acquisition Circuit figure that the utility model embodiment is provided.
Fig. 5 is the Temperature Humidity Sensor circuit diagram that the utility model embodiment is provided.
Fig. 6 is the noise monitoring circuit diagram that the utility model embodiment is provided.
Fig. 7 is the smog measuring instrument circuit diagram that the utility model embodiment is provided.
Fig. 8 is the gatekeeper control system circuit diagram that the utility model embodiment is provided.
Fig. 9 is the buzzer circuit figure that the utility model embodiment is provided.
Figure 10 is the vibrating sensing detection circuit diagram that the utility model embodiment is provided.
Figure 11 is the singlechip minimum system circuit figure that the utility model embodiment is provided.
In figure：1st, sensor；2nd, single-chip microcomputer；3rd, RF transceiver；4th, ZigBee module；5th, server.
Embodiment
For utility model content of the present utility model, feature and effect can be further appreciated that, following examples are hereby enumerated, and
Accompanying drawing is coordinated to describe in detail as follows.
Fig. 1 is referred to Figure 11：
A kind of machine room monitoring system based on ZigBee technology, including sensor 1, single-chip microcomputer 2, RF transceiver 3,
ZigBee module 4, server 5.
The sensor 1 is connected with the single-chip microcomputer 2, and the single-chip microcomputer 2 is connected with the RF transceiver 3, described to penetrate
Frequency transceiver 3 is connected by wireless network with the ZigBee module 4, and the ZigBee module 4 is connected with the server 5.
The sensor 1 includes Voltage measure, current measurer, temperature and humidity measurement device, noise measuring set, smog measurement
Instrument, vibrating sensing detector, gate monitor.
The single-chip microcomputer 2 be used for by sensor collection to data be sent to RF transceiver.
The RF transceiver 3 is used to the data after handling through single-chip microcomputer 2 being sent to by radio sensing network
ZigBee module 4；
The ZigBee module 4 is used to send the sensing data received to server 5 by cable network.
(1) voltage measurement principle and its circuit
Sampled using pure resistance partial pressure.Connected, slided with RES1 (200K) slide rheostat with 4.3M resistance
Rheostat two ends are sampled, and face adds voltage order one to follow, isolated with previous stage, and because sampled voltage is ambipolar, this practicality is new
The ADC0809 that type is used is unipolar to need to be lifted voltage.Slide rheostat is passed through using LM317 voltage-stabilizing devices
RES2, which is adjusted, makes output waveform be unipolarity.The benchmark electricity that the bipolar signal produced after voltage follow is produced with LM317
Pressure output waveform after second OP07 is exactly unipolar signal, in order that overtension can also adopt value, 220V alternating currents,
It is divided to 4.5V.The magnitude of voltage that can so adopt can be in 250 or so, circuit diagram such as Fig. 2.
(2) current measurement principle and its circuit
Current measurer mainly combines with voltage to be detected to electric power, and voltage acquisition is done with current acquisition
On one block of plate, " L " end of circuit diagram is connected with voltage acquisition module " L " end, is the input of 220V alternating currents.220V is another
Input is connected to the ground.After " R7 " resistance is connected with " C3 " electric capacity, in parallel with electrical equipment.Here " R7 " has played one with " C3 "
Simply filter out radio-frequency component." T " is current transformer, and the electric current after transformer is also ambipolar, as voltage
A current boost need to be added.It is changed into unipolarity to be gathered by ADC again.Circuit diagram such as Fig. 3.
(3) voltage, electric current adopt circuit introduction
Voltage, electric current and smokescope analog signal are all to be converted into digital signal samples by ADC0809 to quantify again
AVR is transferred to be handled.ADC_A0-ADC_A2 is the address signal of 8 paths, and ADC_ALE is address latch signal,
ADC_D0~D7 is the result output data bus after conversion, and ADC_Start is that ADC starts conversion signal, and ADC_OVER is to turn
Change end signal.ADC_EN enables signal for output, and ADC needs additional clock to be inputted by ADC_clk.Above pin is all linked into
On AVR I/O port, ADC0809 sequential is controlled by AVR.ADC first via analog signals connect 220V alternating currents collection signal；Second
Road connects 220V current acquisition signals.3rd tunnel connects smoke collection signal.Circuit diagram such as Fig. 4.
(4) Temperature Humidity Sensor DHT11
DHT11 relative humidity and temperature survey are all calibrated, the signal transmission distance super low energy consumption of numeral output overlength, 4
Pin is installed.The digital module acquisition technique and temperature and humidity sensing technology of its application specific, it is ensured that product has high reliable
Property with remarkable long-time stability.Sensor include a resistance-type humidity sensing element and a NTC temperature element, calibration factor with
The form of program is stored in OTP memory, and sensor internal will call these calibration factors in the processing procedure of detection signal.
One wire system serial line interface, signal transmission distance is up to more than 20 meters, and DATA is for the communication between microprocessor and DHT11 and together
Step, using single bus data form, communication time 4ms or so, data point fractional part and integer part, specific form exist
Illustrate below, current fractional part is used to extend later, and it is that zero, operating processes are as follows to now read out：Once complete data transfer
For 40bit, a high position first goes out.Data format：8bit humidity integer data+8bit humidity fraction data+8bi temperature integer data+
Verification and data are equal to " 8bit humidity integer datas+8bit when 8bit temperature fraction datas+8bit is verified and data transmission is correct
8, the end of humidity fraction data+8bi temperature integer data+8bit temperature fraction data " acquired results, circuit such as Fig. 5.The electricity
Road very simple sensor has 4 pins, and only 3 pins are useful.One meets VCC, and one meets GND, and also one is that data are total
Line.External 10K pull-up resistor, then connect 1K resistance and can just connect with the I/O port of microprocessor.
Temperature Humidity Sensor DHT11 design principles：
Due to being monobus, monobus is dragged down into 20ms first in the design, then puts height, crosses whether 50us detections bus has
Answer signal (bus is pulled low).Data wire is being waited to be driven high about 80us again after detecting, then it is low by being worth, in data wire again
Secondary generation rising edge starts timing, and timing is terminated after data wire is pulled low, and 0 is judged as by rising time, or total for 1.
40 data can be read altogether.First 16 are humidity, and latter 16 are temperature, and last 8 are check code.Write-in deposit after verification is qualified
Device.The reading of waiting for CPU.Need after 1 second, again read off after running through a data.Whole cycle about 1.08 seconds.Each
A data can be updated within 1.08 seconds.
(5) noise testing principles and methods
Noise module is mainly used in monitoring the sound for whether having high-decibel in computer room, for determining whether thief's
Swarm into.If being spoken after being tapped in computer room to the door of computer room for thief, or entrance, computer room rack in face etc. inside is beaten
Send the sound.It will monitor, and by the incoming AVR of useful signal.Auditory tone cues is sent by AVR control sound broadcasting modules again.
The circuit is simply filtered by " SOUND " microphone collection sound by " C1 " electric capacity, then sound is amplified by " OP07 ", amplification
Multiple is adjusted by " R9 " slide rheostat, then through another OP07 is compared output, behind this piece " OP07 " as comparator
Reference voltage by " R11 " slide rheostat adjust.Here equivalent to one threshold value, generally not over this door
Limit, low level is output as in pin " SOUND ", if thinking that someone swarms into more than this threshold value, and " SOUND " is output as high electricity
It is flat." SOUND " pin is connected with an AVR IO, then according to the signal monitored does corresponding processing by AVR.Circuit diagram is such as
Fig. 6.
(6) principle of smog measurement
Smoke Sensor prevents the generation of fire mainly for detection of the concentration of imflammable gas in computer room.MQ-2 letter
Single circuit, adjusts R3 to change MQ-2 resolution ratio.What it is due to MQ-2 generations is analog signal, need to be re-fed into AVR through AD samplings.
Here MQ-2 is connected to ADC0809 the 3rd road input.Circuit diagram such as Fig. 7.
(7) gating circuit
Door monitoring system is mainly used in preventing the entrance of non-working person.Control on the door：Pass through an AVR I/O pin
It is connected to control 4N25 optocouplers being turned on and off every device with " DOOR " pin of the module.Former plan is controlled with magnetic valve
Switch.Because door lock needs very big power to open in the case of closing, very big magnetic valve is so needed.Due to
Volume reason is here using light emitting diode come instead of the state of magnetic valve and door lock.4N25 optocouplers are mainly herein every device
Isolation solenoid valve is on and off, the powerful counter electromotive force brought.AVR is prevented to be burned.The detection of state on the door：Pass through
An AVR IO be connected with " HT130 " pin of the module control detect HT130 infrared tubes receiving terminal be with transmitting terminal
It is no to have barrier.Here when HT130 infrared tube U-lags have barrier, it is believed that door is to open, and is considered during clear
Close, once come the switch of the state that judges door.Circuit diagram such as Fig. 8.
(8) buzzer
Buzzer circuit is mainly the working condition to whole system, and a prompting alarm function is played at the scene.For example it is warm
During the work of degree and the too high inapplicable computer room instrument and equipment of humidity.Pass through AVR another pin and " BUZZER " of the module
Pin is connected to control the sounding of buzzer.The circuit mainly drives buzzer sounding by a triode.Circuit diagram
Such as Fig. 9.
(9) shock sensor detection circuit introduction
Shock sensor detection module is mainly used in the detection that non-working person invades computer room, and the sensor is used primarily in sky
On the outdoor machine of tune and some equipment." ZD " pin and AVR an IO connection in figure, when the outdoor machine of air-conditioning is illegally shaken
It is dynamic.A trailing edge will can be produced on " ZD " pin.On AVR by reading the flat change of the point of this pin it is known that
Whether there are vibrations to produce.Circuit diagram such as Figure 10.
(10) AVR minimum systems
Single-chip microcomputer uses AVR single chip, and control chip is ATMEGA128L-3, and peripheral circuit is very simple.There are two crystal oscillators
Y1 is 7.3728M, and Y2 is 32768Hz.Besides power management module, external power supply is 5V, and AS1117-3.3 is voltage stabilizing chip.
ARV3.3V power supplys are provided.Minimum system, which can just run ATMEGA128L itself, individual SIP serial data interfaces, just
It can be communicated with CC2420, be conducive to the program of writing.Also one ISP download port, the download for program is debugged.Separately
There are 3 LEDs outside, the state of observation operation when being run for program.MAX3232 electrical level transferring chips, for serial communication.
It is being exactly other I/O ports, for being connected with other sensors, PA3-PA5 is ADC address choice port, and PA6 is the defeated of ADC
Go out enable port, PA7 is ADC ADC conversion end signal port, and PC0-PC7 is ADC 8 bit data ends mouthful, and PD0 is temperature
Humidity collection port, PD1 is Noise Acquisition port, and PD2 is the control port of door, and PD3 is shock sensor signal port, PD4
For the state acquisition port of door, PD5 is the control port of buzzer, and PD6 is ADC conversion starting signal, and PE0 and PE1 are string
The data transmit-receive port of the communication of mouth, PE7 provides change over clock for ADC, and these are exactly the interface with peripheral sensor, circuit
Figure such as Figure 11.
RS232 serial communications are used with upper machine communication.In order to avoid when wireless sensor network is communicated, multiple nodes
It is to clash to send data to telegon simultaneously.Telegon is communicated with node communication using inquiry mode.Thus there was only one
Individual main equipment, other slave units are all passive work.It is again by PC control that the data of telegon, which are sent,.Such institute
Some initiatives are with regard to being all given to host computer, and when host computer sends out data to telegon, sent out when telegon to node
Data.When node receives the data that sensor will be gathered after data or is controlled to set accordingly according to different orders
Preparation goes out corresponding action.This addresses the problem host computer and the Communication of ZigBee module.
When the request message that the telegon that node receives is sent, humiture, noise, smokescope, vibrations will be gathered
Sensor and voltage, the present working condition of electric current.Then the data collected packing is sent by radio sensing network again
To telegon.The regular hour may be spent when gathering these data, so host computer can not be sent after an acquisition instructions
Article 2 instruction is retransmited immediately, and at this moment node gathers sensor information.The message that telegon is sent will not be comprehended.But
The message still can be received simply go response after processor has been gathered by CC2420.If so, some sensors
As humiture it must every response in 1 second once, it is such if the data that collect be incorrect certainly.So as far as possible
Avoid such operation, node it is corresponding it is complete after search for the second time doing.
When ZigBee module is debugged, can by serial ports send information be set by certain agreement telegon (or
Node) address or inquiry telegon (or node) address.
The top priority of machine room monitoring system is to collect the ambient parameter that each sensor detection in computer room is obtained, in computer room
Install temperature, cigarette sense, fire alarm probe and the data that go out these probe detections by AVR single chip be acquired processing again by
The data collected are transferred in the ZigBee module being connected with server by AVR controls CC2420 by radio sensing network,
Transferred data to again by the cable network built well on internet, by these information transmissions to remote monitoring point for managing
Reason person checks, this not only avoids the hardship hurried back and forth of attendant, more improves the efficiency of computer lab management, prevents security incident
Occur.
Using technical scheme described in the utility model, or those skilled in the art is in technical solutions of the utility model
Under inspiration, similar technical scheme is designed, and reaches above-mentioned technique effect, is to fall into protection model of the present utility model
Enclose.
Claims (3)
1. a kind of machine room monitoring system based on ZigBee technology, it is characterised in that the computer room prison based on ZigBee technology
Control system is provided with sensor；The sensor is connected with single-chip microcomputer, and the single-chip microcomputer is connected with RF transceiver, the radio frequency
Transceiver is connected by wireless network with ZigBee module, and the ZigBee module is connected with server；
The sensor includes Voltage measure, current measurer, temperature and humidity measurement device, noise measuring set, smog measuring instrument, shaken
Dynamic Sensitive Detector, gate monitor.
2. the machine room monitoring system as claimed in claim 1 based on ZigBee technology, it is characterised in that the Voltage measure
Resistance connected with slide rheostat.
3. the machine room monitoring system as claimed in claim 1 based on ZigBee technology, it is characterised in that the temperature and humidity sensing
Device uses DHT11 sensors；One pin of the DHT11 sensors meets GND, and a pin meets VCC, and a pin connects data
10K pull-up resistor and 1K resistance are connect on bus, the circuit connected with data/address bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621168976.0U CN206541194U (en) | 2016-11-02 | 2016-11-02 | A kind of machine room monitoring system based on ZigBee technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621168976.0U CN206541194U (en) | 2016-11-02 | 2016-11-02 | A kind of machine room monitoring system based on ZigBee technology |
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| CN206541194U true CN206541194U (en) | 2017-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621168976.0U Expired - Fee Related CN206541194U (en) | 2016-11-02 | 2016-11-02 | A kind of machine room monitoring system based on ZigBee technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108581990A (en) * | 2018-04-04 | 2018-09-28 | 广州市欧域科技有限公司 | A kind of computer room debugging multifunctional tool box |
| CN109506327A (en) * | 2018-10-24 | 2019-03-22 | 彭鸿琦 | A kind of meeting room air-conditioning that the state based on conference table can be closed voluntarily |
-
2016
- 2016-11-02 CN CN201621168976.0U patent/CN206541194U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108581990A (en) * | 2018-04-04 | 2018-09-28 | 广州市欧域科技有限公司 | A kind of computer room debugging multifunctional tool box |
| CN109506327A (en) * | 2018-10-24 | 2019-03-22 | 彭鸿琦 | A kind of meeting room air-conditioning that the state based on conference table can be closed voluntarily |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171003 Termination date: 20181102 |
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| CF01 | Termination of patent right due to non-payment of annual fee |