CN106094620B - Remote analog amount acquires alarm system - Google Patents
Remote analog amount acquires alarm system Download PDFInfo
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- CN106094620B CN106094620B CN201610447800.7A CN201610447800A CN106094620B CN 106094620 B CN106094620 B CN 106094620B CN 201610447800 A CN201610447800 A CN 201610447800A CN 106094620 B CN106094620 B CN 106094620B
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- 230000003111 delayed effect Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 230000001186 cumulative effect Effects 0.000 claims description 2
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/12—Messaging; Mailboxes; Announcements
- H04W4/14—Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
Abstract
The present invention relates to a kind of remote analog amounts to acquire alarm system, is made of sensor, measuring instrumentss, main controller and SMS R-T unit.Sampling hold is synchronized by the ADC of measuring instrumentss, the data that each measuring instrumentss are acquired send main controller to by power line communication and handle, and when the data over run of measurement, main controller is alarmed by GSM nets to administrator.
Description
(1) technical field：
The present invention relates to a kind of remote analog amounts to acquire alarm system, short by sensor, measuring instrumentss, main controller and mobile phone
Believe R-T unit composition.Sampling hold is synchronized by the ADC of measuring instrumentss, the data that each measuring instrumentss are acquired pass through electricity
Line of force communication sends main controller processing to, and when the data over run of measurement, main controller is alarmed by GSM nets to administrator.
(2) background technology：
The control system of power supply is provided by power network, each electronic equipment or intermodule are communicated by special circuit,
The timing time of each electronic equipment or electronic module is corrected, reaches synchronous operation purpose.Due to being made using special circuit communication
Wiring complicates and increases cost, if timing time is not corrected by line traffic, due to traditional timing error, runs number
After hour, accumulation timing error can make system control action inconsistent, may cause system crash, and at some, often change is set
Meter, its products application of the big occasion of wiring installation amount are restricted.
(3) invention content：
The present invention relates to remote analog amounts to acquire alarm system, is used for the acquisition and teletransmission of various physical quantitys.System
It is made of sensor, measuring instrumentss, main controller and SMS R-T unit.Sampling is synchronized by the ADC of measuring instrumentss to protect
It deposits, the data that each measuring instrumentss are acquired send main controller to by half wave communication of power line and handle, when the data of measurement are super
In limited time, main controller is alarmed by GSM nets to administrator.It is respectively mounted cycle discriminator circuit in each measuring instrumentss and main controller, is used for
Synchronization time of generation system keeps system to keep strokes, at the same respectively install in its telecommunication circuit a communications electronics switch,
Switch drive module.Each measuring instrumentss and main controller are connected on same electric power cable and master switch are arranged, after master switch
Isolating diode is installed, system is using the half wave communication half-wave power supply through power line.The panel of each measuring instrumentss is equipped with 3 to 5
LED modules with different colors, sequentially shows that LED modules with different colors combines (example at a period of time of measuring instrumentss after offline individually just booting
Such as：Red, green, blue, red green, bluish-green, red blue, RGB etc.), each combination is corresponding with the number of number, and selection display is different
When color LED combination, shutdown obtain corresponding unique number and preserve, and label knowledge can check verification mark, it be
The number period, microcontroller was non-easily by the deposit of number data by the energy storage of its power capacitor when can't detect grid cyclic wave signal
It loses in memory.
Communication is controlled by synchronization time to keep action long-term consistent, the switch drive of main controller and each measuring instrumentss
Module is followed by the ends CLK of d type flip flop from electric power cable through resistance decompression, partial pressure, in the outside of the Q termination microcontrollers of d type flip flop
Fracture (INT0 or INT1), fracture is set as level triggers in this.The ends D of d type flip flop are grounded, the I/O mouths at the ends S and microcontroller
Connect, original state S sets 1 in end.When the positive square-wave signal at the ends CLK arrives, rising edge makes d type flip flop set to 0, external interrupt mouth
Low level generates interruption, and in interrupt service routine setting to 0 first the ends S makes d type flip flop set the 1 i.e. ends Q as 1 and the Central Shanxi Plain is broken, then into
Row communication, communications electronics switch is connected to microcontroller corresponding port according to used communication mode, and carries out signal condition, sign off
The preceding ends S, which set 1, makes out the communication of the lower cycle of interrupt latency, so realizes half wave communication in cycles.
SMS R-T unit is installed in system, using GSM network, is carried out telecommunication with receiving and dispatching short message mode,
The SMS messaging service of GSM at present is still that a kind of highest SMS of short message service GSM of domestic popularity rate itself has data biography
Function, the transmission of a message is sent just to constitute primary communication, the transmission of message is by the short message service outside GSM
The heart (SMSC) is relayed, it does not have to dialing and can establish connection by the SMS service SMS of GSM, and user adds the information to be sent out
Upper stay of two nights data are sent to short message service center, and the final stay of two nights is then forwarded to after short message service center completes storage.Institute
With when GSM terminals be not switched on when information will not lose.
The present invention utilizes the positive half cycle ascent stage of power network cycle, takes three to screen point and realize and sentences to the identification of cycle signal
It is fixed, recycle the cycle time to establish synchronization time, the synchronous operation of main controller and each measuring instrumentss in realization system.
Main controller and the cycle discriminator circuit structural schematic diagram of each measuring instrumentss by two as shown in Fig. 2, use hysteresis ratio
Voltage comparator compared with device forms, and includes filter circuit in each voltage comparator, the reference voltage of voltage comparator by
Regulator circuit provides.Clock timer and synchrotimer is arranged in system.If detecting that two adjacent cycle signals are
Very, then take out the clock timer timing time between two adjacent cycle signal zero passages, sequentially be stored in the cycle time deposit
In storage unit, which can store 100 cycle times, a cycle time is often stored in when being filled with, first
The cycle time being stored at first is removed, and calculates the average value Tz of the cycle time of deposit and preserves, is differentiated using Tz values
Cycle signal to be identified reduces erroneous judgement possibility to reduce the influence of power network frequency fluctuation, while screen point using three.
Two comparators are respectively used to screen point 1, screen point 2, as shown in Figure 1.In the cycle of cycle positive half cycle ascent stage
At zero passage, that is, screen point 0 setting a voltage zero-cross detection module, it using cycle positive half-wave signal through electric resistance partial pressure, diode into
The clock end CLK of feeding d type flip flop after negative half period, signal condition is isolated in one step, and the Q of d type flip flop terminates microcontroller external interrupt
Mouthful, which is arranged to level triggers, the ends the D ground connection of d type flip flop, and S terminates single-chip processor i/o mouth, usually sets for the I/O mouthfuls
1.When cycle positive half-wave zero cross signal arrives, cycle signal rising edge immediately after makes the ends d type flip flop Q be 0, outside microcontroller
Fracture low level in portion is interrupted to generate, is executed instruction in interrupt service routine：Described I/O mouthfuls set to 0, the Central Shanxi Plain is disconnected, meter
When, described I/O mouthfuls set 1, open interruption.Remaining two comparator is separately positioned on the cycle positive half cycle ascent stage, crest voltage
The examination point 2 of the examination point 1 and 50% to 70% place at 35% to 50% place.
Cycle signal determining：For microcontroller after setting time opens interruption, clock timer resets and starts timing, works as cycle
When voltage zero-cross, the output voltage jump that the d type flip flop in the voltage zero-cross inspection survey mould block ﹙ V0 ﹚ for screening point 0 is arranged becomes zero, and produces
It is raw to interrupt, record its zero crossing break period Th0；Hereafter, the output electricity of electricity pressure comparator ﹙ V1 ﹚ at point 1 is screened in microcontroller scanning
Pressure, when all wave voltages are reached to the threshold voltage of ﹙ V1 ﹚, output voltage saltus step from high to low, scanning records its bound-time Th1；
Same scanning record screens electricity at point 2 and presses comparator ﹙ V2 ﹚ output voltage bound-time Th2, and Th0 and voltage zero-cross are detected mould
The output voltage bound-time setting value Ts0 of Kuai ﹙ V0 ﹚ makes comparisons；The output voltage bound-time of Th1 and electricity pressure comparator ﹙ V1 ﹚
Setting value Ts1 and Th2 makes comparisons respectively with the output voltage bound-time setting value Ts2 of electricity pressure comparator ﹙ V2 ﹚, if
Within the scope of allowable error, then the discriminator signal detected is true, is otherwise false.When above-mentioned judgement discriminator signal is true, calculate
When clock timer timing between cycle signal zero passage when this cycle signal zero passage and an adjacent preceding discriminator signal are true
Between Tzu, it is made comparisons with the average value Tz of cycle time, the cycle signal if no more than setting cycle time error Tzv
It is true, at this moment preserves Tzu and 20ms is taken to be added with synchrotimer timing time, in the value deposit synchrotimer that will add up.
When clock timer starts timing with cycle voltage zero-cross, then timing to 16ms opens the break period between 18.5ms
Open interruption when setting value Tk, clock timer timing to 25ms is disconnected to Central Shanxi Plain when pass break period setting value Tn between 27ms.
After system boot, clock timer starts timing, and when detecting first cycle voltage zero-cross, setting is being screened
The voltage zero-cross Jian of point 0 surveys the output voltage saltus step of Mo Kuai ﹙ V0 ﹚, is interrupted to generate, and takes out the time of cycle voltage over zero
T0 is preserved, and clock timer is reset to and started timing, and at this moment cycle time voltage crosses zero Th0 is 0, while microcontroller is by above-mentioned
Method scans and judges discriminator signal.What it is due to detection is first cycle, and clock timer is opened in cycle voltage zero-cross
The value of beginning timing, Th0, Th1 and Th2 must add the difference that cycle time 20ms subtracts out break period setting value Tk, such as
Three discriminator signals of fruit are true, and i.e. opening the break period for the first time takes Tk next time.Otherwise it is fictitious time, at this time clock timer time
T0 must be added, continues to detect.
When detecting first and second adjacent cycle voltage zero-cross, due to not preserving the cycle time of detection,
Therefore the clock timer timing time twice between cycle signal zero passage is made comparisons with cycle time 20ms, judges cycle signal
When being true, then takes out clock timer cumulative time T1=T0+Tk when opening interruption and be stored in synchrotimer as initial time
In, open interruption after clock timer reset, otherwise judge cycle signal be fictitious time, at this time the clock timer time must add T1,
Continue to detect first cycle again as stated above.After it is very to detect first cycle signal, restore above-described week
Wave signal determining.
As shown in Figure 1, if detecting that cycle signal is false, the break period is opened next time and opens the break period at this
Afterwards, open interruptions when average value Tz through the cycle time that is delayed, and open interrupt after be delayed Tns when the Central Shanxi Plain it is disconnected, when the setting Central Shanxi Plain is broken
Between be when cycle signal screen point 0 when do not generate interruption, at this moment must be in the setting time point more than Ts0 allowable error ranges
Start to scan, and when scanning examination point 1 and examination point 2, voltage comparator output voltage does not generate saltus step, all breaks in the Central Shanxi Plain
The time Tns Central Shanxi Plain is disconnected and stops scanning, and Tns is:
Tns=Tn-Tk
If detecting that cycle signal is true, next cycle opens break period Tks and is:
Tks=Tk+Th0
I.e. from opening for the first time after the break period takes Tk, clock timer is that timing opens interruption to Tks, and weight after resetting
New to start timing, timing is disconnected to Central Shanxi Plain when Tns, to make the synchrotimer time be corrected by cycle time voltage crosses zero.
It repeats the above process.If the upper cycle signal detected is true, when this cycle judges, discriminator signal is
Vacation, or the cycle time detected is more than setting cycle time error Tzv or clock meter compared with the average value Tz of cycle time
When device timing to close break period setting value Tns when, voltage zero-cross inspection survey the non-saltus step of mould block ﹙ V0 ﹚ output voltages, in not generating
Disconnected, then when clock timer timing is to Tns, the Central Shanxi Plain is disconnected, at this moment remembers that not counting cycle N is 1 and stores, when opening interruption next time
Between be to open the break period in last time to open interruption after Tz, clock timer open interrupt after reset and timing, when timing is to Tns
The Central Shanxi Plain is disconnected, hereafter the judgement cycle signal true and false every time, though if false or this detection discriminator signal be false true last time, then take
N will be restored after N+1 in memory.
When it is true to detect cycle signal, then takes out N in memory and preserve, and by N zero setting in memory, and restore to make
With setting value Tks, the value of (N+1) × 20ms is at this moment taken to be added in synchrotimer.
The system synchronization time is the time of synchrotimer, along with current just in the time of the clock timer of timing.
When the point signal true and false is screened in judgement, Th0, Th1, Th2 are by being set with voltage comparator output voltage bound-time
Definite value Ts0, Ts1, Ts2 make comparisons see it is whether overproof, come judge screen point a signal true and false, can select：Th0, Th1, Th2 are
The cycle discriminator signal is true when true or Th0 is true, while when one of Th1, Th2 are true or when Th1, Th2 are true, should
Cycle discriminator signal is true, depending on requiring judgement cycle signal true and false difference.
If system fault, when N is more than a setting value between 25 to 70, due to main controller in system and each measurement
Instrument, the Tz values and N values of detection may be different, and at this moment, power network frequency accumulated error may cause the synchrotimer time
It is corrected when can not be by detecting true cycle signal, when it is true to detect cycle signal, at this moment uses clock timing
The accumulative clocking value of device is directly added in synchrotimer, and to reduce the asynchronous time of system, it is N × Tz+ to add up clocking value
20ms.N is much smaller than 25 in the case of power network normal operation.
The cycle time error Tzv of permission and the flip-flop transition setting value of voltage comparator output voltage, by test assessment
Its average value is taken to obtain.
(4) it illustrates：
Fig. 1 is that cycle screens data relationship schematic diagram；
Fig. 2 is cycle discriminator circuit structural schematic diagram；
Fig. 3 is the circuit structure block diagram of remote analog amount acquisition alarm system.
(5) specific implementation mode：
Fig. 3 is the circuit structure block diagram of remote analog amount acquisition alarm system, including:10 ﹚ of Zhu Kong Qi ﹙, communications electronics
It opens and closes 11 ﹚ of ﹙, switchs and drive 12 ﹚ of dynamic model block ﹙, 13 ﹚, SIM card ﹙ of SMS receipts transmitting apparatus ﹙, 14 ﹚, pass 15 ﹚ of sense device ﹙, cycle examination
16 ﹚, Ce amount Yi Biao ﹙ of electricity Lu ﹙, 17 ﹚.Wherein 11 ﹚ of communications electronics Kai Guan ﹙, 12 ﹚ of switch Qu dynamic model Kuai ﹙ and cycle screen 16 ﹚ of electricity Lu ﹙
It is respectively included in 17 ﹚ and Zhu Kong Qi ﹙ of Ce amount Yi Biao ﹙, 10 ﹚ with Dan Pian Ji ﹙ U0 ﹚ in Fig. 2.11 ﹚ of communications electronics Kai Guan ﹙ are used
Bidirectional triode thyristor is as switch.
Fig. 2 is the structural schematic diagram that cycle screens 16 ﹚ of electricity Lu ﹙, by：Shu enters electricity Lu ﹙ S0 ﹚, voltage zero-cross Jian surveys Mo Kuai ﹙
V0 ﹚, electricity pressure comparator ﹙ V1 ﹚ and electricity pressure comparator ﹙ V2 ﹚ are constituted.Dan Pian Ji ﹙ U0 ﹚ refer to 17 ﹚ and Zhu Kong Qi ﹙ of Ce amount Yi Biao ﹙, 10 ﹚
In microcontroller.Shu enters electricity Lu ﹙ S0 ﹚ for the partial pressure by mains AC voltage by resistance and diode, is converted to voltage
The suitably stable input voltage of comparator.Single piece machine ﹙ U0 ﹚ use 89C55WD, electricity pressure comparator ﹙ V1 ﹚, electricity pressure comparator ﹙
V2 ﹚ use dedicated voltage comparator LM393, and reference voltage is compared come burning voltage using the regulator circuit of voltage-stabiliser tube
The threshold voltage of device.
When mains AC voltage cycle signal zero passage, voltage zero-cross Jian surveys the output voltage saltus step of Mo Kuai ﹙ V0 ﹚, single
Pian Ji ﹙ U0 ﹚ generate interruption, record the break period, while Dan Pian Ji ﹙ U0 ﹚ are additionally operable to scanning voltage Bi compare Qi ﹙ V1 ﹚ and voltage ratio
The output voltage of compare Qi ﹙ V2 ﹚, records bound-time, for judging power network cycle signal to produce when output voltage saltus step
Raw synchronization time.
Single chip computer89C51 realizes serial communication, the microcontroller by I2C buses and main controller in SMS R-T unit
89C51 is also connect with gsm module TC35i by serial line interface integrated circuit MAX232 and carries out data exchange, gsm module chip
TC35i is RS232 data ports, supports AT Command Set, wherein contain the control to SMS, single chip computer89C51 is by GSM moulds
Block sends a series of AT instructions, completes the initialization to gsm module and receiving short message.The transmitting-receiving of SMS uses TEXT patterns,
TEXT patterns are a kind of tactic patterns based on ASCII character.
Claims (2)
1. a kind of remote analog amount acquires alarm system, characterized in that the data that each measuring instrumentss are acquired pass through power line
Half wave communication sends main controller processing to, and when the data over run of measurement, main controller is alarmed by GSM nets to administrator, each to survey
It is respectively mounted cycle discriminator circuit in amount instrument and main controller, is used for the synchronization time of generation system, while each in telecommunication circuit
Installation one communications electronics switch, switch drive module, install isolating diode after master switch；The panel of each measuring instrumentss
Equipped with 3 to 5 LED modules with different colors, a period of time after being individually just switched on sequentially shows that LED modules with different colors combines, selection display
It when LED modules with different colors combines, shuts down and obtains corresponding unique number and preserve, and label knowledge to check verification mark,
The number period, microcontroller was non-easily by the deposit of number data by the energy storage of its power capacitor when can't detect grid cyclic wave signal
It loses in memory, the switch drive module of main controller and each measuring instrumentss is followed by D triggerings from electric power cable through resistance decompression, partial pressure
The ends CLK of device, the external interrupt mouth of the Q termination microcontrollers of d type flip flop, when the positive square-wave signal at the ends CLK arrives, rising edge
D type flip flop is set to set to 0, external interrupt mouth low level generates interruption, is communicated；SMS R-T unit is installed in system,
Using GSM network, carried out telecommunication with receiving and dispatching short message mode；
Cycle discriminator circuit is the positive half cycle ascent stage using power network cycle, takes three to screen knowledge of the point realization to cycle signal
Do not judge, recycle the cycle time to establish synchronization time, clock timer and synchrotimer is arranged in system, if detecting phase
Two adjacent cycle signals are true, then when taking out the clock timer timing between two adjacent cycle signal zero passages
Between, it is sequentially stored in cycle time memory cell, when being filled with 100 cycle time, is often stored in a cycle time, first removes
The cycle time being stored at first, and the average value Tz of the cycle time of deposit is calculated, differentiate cycle to be identified using Tz values
Signal；
Two comparators are respectively used to screen point 1, screen point 2, at the cycle zero passage of cycle positive half cycle ascent stage, that is, screen a little
Negative half period, letter is further isolated through electric resistance partial pressure, diode using cycle positive half-wave signal in 0 setting voltage zero-cross detection module
Number conditioning after be sent into d type flip flop clock end CLK, when cycle positive half-wave zero cross signal arrives, cycle signal immediately after
Rising edge makes the ends d type flip flop Q be 0, and microcontroller external interrupt mouth low level is interrupted to generate, remaining two comparator difference
Setting is in cycle positive half cycle ascent stage, the examination point of the examination point 1 and 50% to 70% place at 35% to 50% place of crest voltage
2；
Cycle signal determining process：For microcontroller after setting time opens interruption, clock timer resets and starts timing, works as cycle
When voltage zero-cross, the output voltage jump that the d type flip flop in the voltage zero-cross detection module for screening point 0 is arranged becomes zero, in generation
It is disconnected, record its zero crossing break period Th0；Hereafter, the output voltage of electricity pressure comparator ﹙ V1 ﹚ at point 1 is screened in microcontroller scanning,
When all wave voltages reach the threshold voltage of electricity pressure comparator ﹙ V1 ﹚, output voltage saltus step from high to low, scanning records its saltus step
Time Th1；Same scanning record screens electricity at point 2 and presses comparator ﹙ V2 ﹚ output voltage bound-time Th2, if when the saltus step
Between within the scope of allowable error, then the discriminator signal detected is true, is otherwise false, when above-mentioned judgement discriminator signal is true, meter
Calculate the clock timer timing between cycle signal zero passage when this cycle signal zero passage and an adjacent preceding discriminator signal are true
Time Tzu makes comparisons it with the average value Tz of cycle time, and cycle is believed if no more than setting cycle time error Tzv
Number it is true, at this moment preserves Tzu and 20ms is taken to be added with synchrotimer timing time, the value that will add up is stored in synchrotimer
In；
When clock timer starts timing with cycle voltage zero-cross, then timing to 16ms opens break period setting between 18.5ms
Open interruption when value Tk, clock timer timing to 25ms is disconnected to Central Shanxi Plain when pass break period setting value Tn between 27ms；
When detecting first cycle voltage zero-cross, the output voltage being arranged in the voltage zero-cross detection module for screening point 0 is jumped
Becoming, is interrupted to generate, time T0 for taking out cycle voltage over zero preserves, and clock timer is reset to and started timing, this
Shi Zhoubo time voltage crosses zeros Th0 is 0, and microcontroller scans and judge that discriminator signal, the value of Th0, Th1 and Th2 must add
The cycle time, 20ms subtracted out the difference of break period setting value Tk, if three discriminator signals are true, next time i.e. for the first time
Opening the break period takes Tk, is otherwise fictitious time there are one discriminator signal, at this time the clock timer time must add T0, continue to detect；
When it is true to detect first and second adjacent cycle voltage zero-cross, judgement cycle signal, then takes out and open interruption
When clock timer cumulative time T1=T0+Tk as initial time be stored in synchrotimer in, open interruption after clock timing
Device reset, otherwise judge cycle signal be fictitious time, at this time the clock timer time must add T1, again detect first cycle,
After it is very to detect first cycle signal, restore above-described cycle signal determining；
If detecting that cycle signal is false, the break period is opened next time after this opens the break period, when through delay cycle
Between average value Tz when open interruption, and open interrupt after be delayed Tns when the Central Shanxi Plain it is disconnected, it is when cycle signal is discriminated that the break period is closed in setting
Not Wei fictitious time, the break period Tns Central Shanxi Plain is disconnected and stop scanning, and Tns is closing:
Tns=Tn-Tk
If detecting that cycle signal is true, next cycle opens break period Tks and is:
Tks=Tk+Th0
I.e. from opening for the first time after the break period takes Tk, clock timer is that timing opens interruption to Tks, and is opened again after resetting
Beginning timing, timing are disconnected to Central Shanxi Plain when Tns；
Above-mentioned cycle signal determining process is repeated, if the upper cycle signal detected is true, when this cycle judges, is discriminated
Level signal is false, then when clock timer timing is to Tns, the Central Shanxi Plain is disconnected, at this moment remembers that not counting cycle N is 1 and stores, next time
It is to open the break period in last time to open interruption after Tz to open the break period, and clock timer is reset after opening interruption and timing, meter
When, the hereafter every time judgement cycle signal true and false disconnected to Central Shanxi Plain when Tns, though if false or this detection discriminator signal is true last time
It is false, then takes N, will be restored in memory after N+1；
When it is true to detect cycle signal, then takes out N in memory and preserve, and by N zero setting in memory, and restore use and set
At this moment definite value Tks takes the value of (N+1) × 20ms to be added in synchrotimer；
The system synchronization time is the time of synchrotimer, along with current just in the time of the clock timer of timing；
When the point signal true and false is screened in judgement, selection：The cycle discriminator signal is true when Th0, Th1, Th2 are true or Th0 is
Very, when while one of Th1, Th2 are true or when Th1, Th2 are true, which is true, depending on to judgement cycle letter
Depending on number true and false difference requires, if N is more than a setting value between 25 to 70, using the accumulative clocking value of clock timer
It is directly added in synchrotimer, it is N × Tz+20ms to add up clocking value.
2. remote analog amount according to claim 1 acquires alarm system, it is characterised in that including:
Main 10 ﹚ of control device ﹙, communications electronics, which are opened, closes 11 ﹚ of ﹙, 12 ﹚ of switch drive dynamic model block ﹙, 13 ﹚, SIM card ﹙ of SMS receipts transmitting apparatus ﹙
14 ﹚, 15 ﹚ of Chuan Gan Qi ﹙, cycle screen 16 ﹚, Ce amount Yi Biao ﹙ of electricity Lu ﹙ 17 ﹚, wherein Dan Pian Ji ﹙ U0 ﹚ and communications electronics Kai Guan ﹙
11 ﹚, 12 ﹚ of switch Qu dynamic model Kuai ﹙ and cycle are screened 16 ﹚ of electricity Lu ﹙ and are respectively included in 17 ﹚ and Zhu Kong Qi ﹙ of Ce amount Yi Biao ﹙, 10 ﹚；
Cycle screen 16 ﹚ of electricity Lu ﹙ by：The roads Shu Ru electricity ﹙ S0 ﹚, voltage zero-cross inspection survey mould block ﹙ V0 ﹚, screen electricity pressure comparator ﹙ at point 1
V1 ﹚ are constituted with electricity pressure comparator ﹙ V2 ﹚ at point 2 are screened, and the roads Shu Ru electricity ﹙ S0 ﹚ by mains AC voltage for passing through resistance and two
The partial pressure of pole pipe is converted to the suitably stable input voltage of voltage comparator；
Single chip computer89C51 realizes serial communication, the microcontroller by I2C buses and main controller in SMS R-T unit
89C51 is also connect with gsm module TC35i by serial port MAX232 and carries out data exchange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610447800.7A CN106094620B (en) | 2016-06-20 | 2016-06-20 | Remote analog amount acquires alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610447800.7A CN106094620B (en) | 2016-06-20 | 2016-06-20 | Remote analog amount acquires alarm system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106094620A CN106094620A (en) | 2016-11-09 |
| CN106094620B true CN106094620B (en) | 2018-08-17 |
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| CN201610447800.7A Active CN106094620B (en) | 2016-06-20 | 2016-06-20 | Remote analog amount acquires alarm system |
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Families Citing this family (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106846879A (en) * | 2017-03-18 | 2017-06-13 | 福州台江区超人电子有限公司 | Bus station's information display system based on nRF905 and WIFI |
| CN106846885A (en) * | 2017-03-18 | 2017-06-13 | 福州台江区超人电子有限公司 | Public transport CFS to CFS presentation of information board based on ZigBee |
| CN106940935A (en) * | 2017-03-18 | 2017-07-11 | 福州台江区超人电子有限公司 | Bus station's information display system based on WIFI |
| CN106898152A (en) * | 2017-03-18 | 2017-06-27 | 福州台江区超人电子有限公司 | Bus station's presentation of information board based on ZigBee and GSM |
| CN106935062A (en) * | 2017-03-18 | 2017-07-07 | 福州台江区超人电子有限公司 | The wave communication of public bus network half and the presentation of information board that arrives at a station |
| CN106846878A (en) * | 2017-03-18 | 2017-06-13 | 福州台江区超人电子有限公司 | Public transport based on nRF905 and WIFI is arrived at a station presentation of information board |
| CN106846877A (en) * | 2017-03-18 | 2017-06-13 | 福州台江区超人电子有限公司 | A kind of public transport intelligence station board using half wave communication and WIFI |
| CN107070503A (en) * | 2017-03-18 | 2017-08-18 | 福州台江区超人电子有限公司 | Arrived at a station display board using half wave communication and WIFI public transport |
| CN106887153A (en) * | 2017-03-18 | 2017-06-23 | 福州台江区超人电子有限公司 | The wave communication of public bus network half and intelligent display system |
| CN106910360A (en) * | 2017-03-18 | 2017-06-30 | 福州台江区超人电子有限公司 | Using the Bus information display board communicated between car and car |
| CN106816028A (en) * | 2017-03-18 | 2017-06-09 | 福州台江区超人电子有限公司 | Bus station's intelligence station board based on ZigBee and WIFI |
| CN106952492A (en) * | 2017-03-18 | 2017-07-14 | 福州台江区超人电子有限公司 | Bus station's information display system based on ZigBee and GSM |
| CN106781614A (en) * | 2017-03-18 | 2017-05-31 | 福州台江区超人电子有限公司 | Public transport based on ZigBee and WI FI is arrived at a station information display system |
| CN106910363A (en) * | 2017-03-18 | 2017-06-30 | 福州台江区超人电子有限公司 | Bus station's information display system based on nRF905 and GSM |
| CN106920420A (en) * | 2017-03-18 | 2017-07-04 | 福州台江区超人电子有限公司 | The wave communication of public bus network half and the information intelligent display board that arrives at a station |
| CN106910362A (en) * | 2017-03-18 | 2017-06-30 | 福州台江区超人电子有限公司 | Bus station's intelligent display board based on nRF905 and WIFI |
| CN106710285A (en) * | 2017-03-18 | 2017-05-24 | 福州台江区超人电子有限公司 | ZigBee-based intelligent bus stop board |
| CN106683472A (en) * | 2017-03-18 | 2017-05-17 | 福州台江区超人电子有限公司 | Bus station information display board based on WI-FI (Wireless Fidelity) |
| CN106953912A (en) * | 2017-03-18 | 2017-07-14 | 福州台江区超人电子有限公司 | The wave communication of public bus network half and the information display system that arrives at a station |
| CN106781615A (en) * | 2017-03-18 | 2017-05-31 | 福州台江区超人电子有限公司 | Using communicated between car and car and WIFI Bus information station board |
| CN106940936A (en) * | 2017-03-18 | 2017-07-11 | 福州台江区超人电子有限公司 | Bus station's intelligent display board based on nRF905 |
| CN106953911A (en) * | 2017-03-18 | 2017-07-14 | 福州台江区超人电子有限公司 | Using the system for displaying public transportation information communicated between car and car |
| CN106920418A (en) * | 2017-03-18 | 2017-07-04 | 福州台江区超人电子有限公司 | Public transport intelligent display system based on nRF905 and GSM |
| CN106910361A (en) * | 2017-03-18 | 2017-06-30 | 福州台江区超人电子有限公司 | Public transport intelligence station board based on nRF905 radio communications |
| CN106920419A (en) * | 2017-03-18 | 2017-07-04 | 福州台江区超人电子有限公司 | Public transport stop board display system based on WIFI and GSM |
| CN106846884A (en) * | 2017-03-18 | 2017-06-13 | 福州台江区超人电子有限公司 | Bus station's presentation of information board based on ZigBee and GSM |
| CN106940937A (en) * | 2017-03-18 | 2017-07-11 | 福州台江区超人电子有限公司 | The wave communication of public bus network half and the information display system that arrives at a station |
| CN106781613A (en) * | 2017-03-18 | 2017-05-31 | 福州台江区超人电子有限公司 | Public bus network half-wave command, control, communications, and information display system |
| CN106910359A (en) * | 2017-03-18 | 2017-06-30 | 福州台江区超人电子有限公司 | Bus station's intelligent display system based on ZigBee and WIFI |
| CN106952491A (en) * | 2017-03-18 | 2017-07-14 | 福州台江区超人电子有限公司 | Bus station's presentation of information board based on WIFI and GSM |
| CN106781612A (en) * | 2017-03-18 | 2017-05-31 | 福州台江区超人电子有限公司 | Using half wave communication and bus station's display system of ZigBee |
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