> One, outline:
The existing environmental monitoring stand majority of all
installs in the open country, the engine room, the enterprise arranges
the place which the stain and so on nobody value defends, the
equipment running status must depend on the staff regularly to the
scene to carry on the inspection, like this not only wastes the
massive manpower and the physical resource, moreover because uses the
periodic inspection to be real-time unable real-time to obtain the
equipment the running status, one but the equipment appears the
breakdown, must wait till the staff arrives when the scene can
discover, inevitably will create some nonessential work fault.
How solves this question key is only then can real-time reflect
the scene equipment active status for the staff. The Xiamen
space can the electric power science and technology limited company
research and develop the GSM short information wireless long-distance
supervisory system provided simply for this question, has been easy to
carry out, few to invest, the reliable solution.
Second, GSM short news technology synopsis and its
characteristic:
The short news service (SMS) is a GSM technology application
important content, it has some prominent characteristics for example:
May transmit 140 bytes data, the data content may be the
character or the numeral; May in the GSM network the end-to-end
transmission, but also may (for example Internet) transmit the short
news from the GSM network to give a vertex station; The short
news through is located in the mobile communication department the
short message center mc (MSC) to make the channel transmission with
the GSM system letter, does not conflict with the pronunciation
channel, even if the terminal occupies under the telephone
conversation condition also to be possible to carry on the
transmission; In the short news transmission process, does not
carry on the process which the call connects establishes and releases;
MSC has the short news the memory function, closes the
machine-hour in the terminal device, may maintain the news to be
effective and so on in the certain time. Using these
characteristics, and its two-way transmission performance, but
conveniently realizes regarding gathering station equipment
information gathering and the long-distance control, namely
realization telemetering and remote control.
The short news service is in the GSM/DCS1800 system does not
only need to establish the end-to-end service channel service.
The point-to-point short news is by the free form letter numeral
string, transmits through the numerical control channel. When
free time takes the independent dedicated control channel dcch
(SDCCH), the information speed is 782b/s; When telephone
conversation takes the idling speed along with the road control
channel (SACCH), the channel rate is 383b/s. In order to avoid
time extends excessively long, as well as fights for to these turns on
the channel load oversized, each short news biggest frame length is
140 bytes (according to ASCII the character 7bit code is 160
characters). Therefore may or receives the short news in any
time transmission transmission protocol data unit TPDU (Transport
Protocol Data Unit), regardless of voice or data communication whether
are carrying on. Because the public GSM network has realized the
networking in the global scope and roams, establishes the GSM system
not to have again to set up the special-purpose correspondence
network, therefore will have the real-time transmission data function
the short news application to be allowed to make transmits each kind
of examination, the monitoring data signal and the control command
data communication system, will be allowed widely to use in the
long-distance monitoring, the localization navigation, the
person-to-person communication terminal and so on.
Third, technical realization principle:
The Xiamen space can the electric power science and technology
limited company unify the GSM short information wireless long-distance
supervisory system which the Xiamen environmental protection bureau
existing environmental monitoring stand the actual situation and this
company researches and develops to produce one kind based on the GSM
short information long-distance environmental monitoring station
running status supervisory system design proposal.
3.1 systems compositions:
I input output examination control unit (YN8080-IO):
The input output examination control unit directly with the
environment test point device control contact and the condition output
contact connection, carries out from on position machine or the staff
the instruction which transmit through the handset short information,
completes to the environment test point equipment control.
Simultaneously when equipment running status change through
condition output contact output signal, the input output examination
control unit can the initiative upward position machine or staff's
handset transmission report.
Technical parameter:
Output contact: Exchanges 220V/7A, direct current 24V/10A,
8 group Chang Kaichang shuts
Input contact: 8 groups switching signals
May expand the unit: 8 group 10 A/D
Correspondence connection: RS232, baud rate 9,600
Working voltage: 5V ~ 36V
Operating temperature scope: -40 ~ +85 ?
II short information data transmission module
(YN1010-DTU):
The short information data transmission module mainly will
complete the short information order the receive decoding concurrently
to give the input output examination control unit, at the same time
inputs the output examination control unit to return to or the
initiative report data code transmission.
Technical parameter:
Frequency: EGSM/GSM 90.0/18 million MHz
Emissive power: EGSM900 typical value 33 dBm
Emissive power: GSM1800 typical value 30 dBm
Correspondence connection: RS232, baud rate 9,600
Working voltage: 5V ~ 36V
Operating temperature scope: -40 ~ +85 ?
III short note control machine (YN1100):
The short note control machine completes the administrative
center computer command code and transmits through the short
information to respectively monitors the stand, receives to monitors
the stand the short note decoding to compare the transmission
administrative center computer.
Technical parameter:
Correspondence connection: RS232, baud rate 9,600
Working voltage: 5V~36V
Operating temperature scope: -40 ~ +85 ?
IV labor controlling machine and handset
In order to can cause the system stable movement,
suggested uses labor controlling machine to take the system the
computer management center, the staff provides the handset can
transmit and receive the Chinese short information.
3.2 principles of work
Administrative center computer control:
The administrative center computer the control command will send
in short note control machine YN1100 through the RS232 connection
according to the correspondence agreement, YN1100 orders the
combination to pack transmits short information data transmission
module YN1010-DTU through the short information way, the data which
YN1010-DTU will receive carries on a solution package of verification
and the complete order passes to through the RS232 connection under
input output examination control unit YN8080-IO, YN8080-IO carries on
according to the instruction to the inspection station equipment is
corresponding the operation, the operating result correlation data
again sends in Y1010-DTU through RS232, YN1010-DTU packs the data
combination again by the short information way transmission for the
YN1100 short note control machine, after the YN1100 short note control
machine will send in a data solution package of verification the
administrative center computer, The entire controlled process
completes.
The staff transmits the short message control through the
handset:
The staff will transmit with the handset according to the form
editor short information to short information data transmission module
YN1010-DTU, the data which YN1010-DTU will receive will carry on a
solution package of verification and the complete order passes to
through the RS232 connection under input output examination control
unit YN8080-IO, YN8080-IO carries on according to the instruction to
the inspection station equipment is corresponding the operation, the
operating result correlation data again sends in Y1010-DTU through
RS232, YN1010-DTU packs the data combination gives again by the short
information way transmission the staff handset.
The inspection station equipment running status change reported
that,
When YN8080-IO examines the inspection station equipment running
status has the change, on own initiative to the YN1010-DTU
transmission condition report order, YN1010-DTU this order by the
short information way transmits to the administrative center computer
or the staff handset.
Fourth, administrative center software:
Below administrative center software has a part of composition:
1st, user management:
The user management divides into the operation user management
and the handset user manages two kinds. Operation user divides
into "the super user", "is limited the user", "the average consumer"
three kinds, the handset user divides into "the high-quality user" and
"the common user" two kinds.
The operation user jurisdiction divides into "the control", "the
inquiry", "the establishment" three kinds.
The handset user jurisdiction divides into "the control", "the
inquiry" two kinds.
Below is various users correspondence jurisdiction table:
Operation user
The jurisdiction super user is limited the user average
consumer
Control ??
Inquiry ???
Establishment ?
Handset user
Jurisdiction high-quality user common user
Control ?
Inquiry ??
2nd, stand establishment:
The stand establishment has two kind of establishments methods
string mouth direct establishment and the short information
long-distance establishment.
Stand establishment as follows:
A) establishes input output examination control unit YN8080-IO
the administrative center number, accepts the jail power as YN8080-IO
which the administrative center computer orders.
B) establishes input output examination control unit YN8080-IO
the handset user number, accepts the handset user order as YN8080-IO
the jail power.
C) establishes the input output examination control unit
YN8080-IO 8 groups inputs conditions change report information
content.
3rd, stand device control and condition inquiry:
The stand device control, may to output the examination control
unit YN8080-IO most more than 8 groups outputs connections to carry on
the operation.
The stand condition inquiry, may to output the examination
control unit YN8080-IO 8 groups inputs conditions to carry on the
real-time inquiry.
4th, event record and inquiry:
Records the stand device control and the condition inquiry order
operation user, the time and the corresponding order and may inquire.
Records the stand equipment condition change time of report and
the content and may inquire.
5th, printing report form:
Fifth, post-sale service:
Product post-sale use training, three years maintenance.
Sixth, product picture:
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