CN2828961Y - Networking alarm system using special communication form - Google Patents
Networking alarm system using special communication form Download PDFInfo
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- CN2828961Y CN2828961Y CN 200520035884 CN200520035884U CN2828961Y CN 2828961 Y CN2828961 Y CN 2828961Y CN 200520035884 CN200520035884 CN 200520035884 CN 200520035884 U CN200520035884 U CN 200520035884U CN 2828961 Y CN2828961 Y CN 2828961Y
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Abstract
The utility model relates to a networking alarm system using a special communication format. An alarm controller bus interface adopts an extension structure that a bus is additionally provided with an extension module and a keyboard; two voltage comparators respectively form a host-module signal level converting circuit and a module-host signal level converting circuit. The utility model can increase information transmission quantity, and can not only achieve field alarm and transmission of alarm information but also can transmit data information detected by a sensor, automatically calibrate the time, etc. A communication interface circuit is a transmission circuit which is composed of a frame structure data signal generator, an answering signal detection circuit and a dialing control circuit, wherein the frame structure data signal generator is composed of a double audio synthesis circuit. In this way, the transmission of each frame of information has an initial signal, data information and verification information, the accuracy of data transmission is effectively increased, the data exchange between an alarm and an alarm center is complete and reliable, and the alarm center can remotely program and control a networking alarm controller.
Description
Affiliated technical field
The utility model relates to internet alarm system, specifically is the internet alarm system that adopts special communication format.
Background technology
Present internet alarm system mainly adopts DTMF (double-tone frequently) and FSK (frequency shift keying) signal to carry out data transmission.Double-tone keeps pouring in defeated mode has relatively high expectations to the degree of distortion of signal, and a little less than the antijamming capability, data rate is slower, is not easy to the transmission of the complex information between center of receiving a crime report and the alarm controller.Adopt the warning message of the general also only transmission routine of warning system of traditional frequency deviation key control mode.The simple monophonic information of another kind of employing is as data information transfer, and its transmission information requirements are not high, be easy to realize, but there is serious deficiency in stability and reliability of its transmission information.Its transmission mode adopts the length of the monophonic information of unified frequency to represent data message " 0 " " 1 " respectively, owing to exist at interval, so transmission speed is slower, transmission information is limited.
Summary of the invention
The purpose of this utility model provides that a kind of data rate is fast, and transmission contains much information, and message code favorable expandability, of many uses both can be transmitted general alarm information, can transmit the internet alarm system of specific information again as required.
The purpose of this utility model reaches like this: a kind of internet alarm system that adopts special communication format, contain the center of receiving a crime report and alarm controller, alarm controller is by the communication interface circuit, bus interface circuit, power circuit, the CPU single chip machine controlling circuit, the defence area signal acquisition circuit, output detects control circuit and the incident memory circuit constitutes, it is characterized in that: described bus interface adopts expansion structure, install expansion module and keyboard on the bus additional, voltage comparator ic 1A and IC1B constitute main frame respectively to module and the module signal level shift circuit to main frame; Described communication interface circuit is the transmission circuit of forming with the frame structure data signal generator and the answer signal testing circuit that are made of double-tone frequency combiner circuit, the control circuit that dials.
The described double-tone frame structure data signal generator of combiner circuit formation frequently is meant that low frequency and two kinds of square waves of high frequency of being exported by the LX6688 communication format by CPU are converted to sine wave through amplifier IC1C and IC1D, and sine-wave superimposed is after C point output double-tone signal generating circuit frequently.
The described double-tone frame structure data signal generator that constitutes of combiner circuit frequently is meant by CPU by the single square wave of LX6688 communication format output through amplifier IC1C or IC1D is converted to sine wave after the signal generating circuit of C point sine wave output.
The answer signal testing circuit is meant the circuit by two-stage is amplified and the one-level shaping circuit constitutes; the dialing control circuit is by MOV1 and MOV2 voltage dependent resistor (VDR) lightning protection circuit; and the off-hook control circuit of forming by J1, J2, Q5, Q6, voltage auto-adjusting circuit that Q4, LED, D1, D2 form and the automatic testing circuit of forming by D, IC3, R16, R17, R18, C11, T1 of telephone wire.
The utlity model has following advantage:
1, adopts the bus expansion structure, on bus, connect expansion module,, and be used to the keyboard operating and show as various switching values and data volume modules such as defence area expansion module, temperature detecting module, humidity detecting module, pressure detection modules.Except with general internet alarm system is the same can onsite alarming and to central transmission alert information, the data amount information that can also arrive to some sensor of central transmission makes internet alarm system more perfect, more reliable.The circuit that is connected with telephone wire has automatic detection and automatic voltage is regulated, and can adapt to different communication lines automatically, makes communication more reliable and more stable.
2, the communication interface circuit supports warning system to adopt frequency shift keying to press the combined network communication form that frame structure sends, and the transmission of every frame information all has start signal, data message, check information, improved the accuracy of data transmission effectively, realized receive a crime report exchanges data between the center of alarm controller and networking effectively, can realize that the center of receiving a crime report carries out remote programmable and control to the networking alarm controller.LX6688 communication format particularly, it is output as sine wave, improves transmission performance; Input is converted to square wave, has avoided the influence of waveform distortion, has improved antijamming capability.
3, the form of frame structure is freely set according to information content for transmission, data amount informations such as the temperature of gathering as alert time of origin, user grouping number, Customs Assigned Number, module numbering, zone number, alert information (status information, parameter information) and expansion module, humidity, pressure, when transmitting end of message (EOM) at every turn, the center temporal information is passed to alarm controller, automatic correcting time guarantees that the time of alarm controller and center are consistent.
Description of drawings
Fig. 1 is the alarm block diagram of this warning system.
Fig. 2 is bus expansion interface circuit figure.
Fig. 3 is double-tone frequency combiner circuit, the i.e. circuit diagram of data signal generator in the communication interface circuit.
Fig. 4 is the answer signal testing circuit figure in the communication interface circuit.
Fig. 5 is the dialing control circuit figure of communication interface circuit.
Fig. 6 is the alarm communication system process flow diagram.
Embodiment
Accompanying drawing also is embodiment.
In the present embodiment, the structure of alarm is provided by Fig. 1.Alarm controller is by the communication interface circuit, bus interface circuit, and power circuit, the CPU single chip machine controlling circuit, the defence area signal acquisition circuit, output detects control circuit and the incident memory circuit constitutes.
Bus interface has adopted expansion structure, installs expansion module and keyboard on bus additional.Bus interface circuit is referring to Fig. 2.Among the figure, the A point is the signal output part of CPU to bus transmission data, and the B point is the signal input part that CPU receives bus data; The C point is the bus IO interface.
IC1 is a voltage comparator, as the signal level conversion.When main frame when module sends data, the 5V data-signal of CPU output is sent into IC1A from the A point and is compared, and obtains being converted to the data-signal of 12V level at output terminal 1 pin.Equally, when module when main frame sends data, signal arrives the C point, the 12V level signal of transmitting on the bus is sent into IC1B carry out voltage ratio, gives CPU processing in B point output 5V level signal.Help reducing the loss of data transmission by level conversion, guarantee reliability of data transmission, increase the distance of transmission.
In order to connect up conveniently, save wire rod, adopted the three-wire system structure, input signal and output signal are all received on the bus by the C point.Here D1 plays buffer action, avoids the influence of comparer IC1A to input signal.
The transmission of every frame information all had start signal, data message, check information when the communication interface circuit supported that this network alarm device sends by frame structure.Referring to Fig. 3, Fig. 4 Fig. 5.In this example frame sends form and comprises 6 user grouping number, 6 Customs Assigned Numbers, 8 bit times, 8 event informations, at this called after LX6688 communication format.
In double-tone frequency combiner circuit, AB 2 points that the low frequency and the high-frequency square-wave signal of CPU output are delivered to circuit, change-over circuit through IC1C and IC1B and peripheral resistance capacitance composition is converted to sine wave signal with square wave, with two kinds of different sine wave signal stacks, after amplifying, Q1 exports double-audio signal then by the C point.Transmitting data information when this signal is used for dialing and DTMF communication modes.
When sending single-frequency signals, CPU output single-frequency square-wave signal delivers to 2 of AB or more arbitrarily, output single-frequency sine wave after Q1 amplifies, is exported by the C point behind change-over circuit.This signal is used for the answer signal of DTMF communication modes, or the modulation signal of LX6688 communication format.
The ringdown of sending here on the telephone wire, dialing tone, ring-back tone, busy tone, center answer signal tone, LX6688 communication format data information signal are imported by the A point of answer signal testing circuit, two-stage amplifying circuit through Q1 and IC1A and peripheral cell composition amplifies, the shaping circuit shaping of forming through IC1D and peripheral cell is handled again, is converted to pass to CPU behind the square-wave signal various signals are discerned processing.
2 lines of answering the call of AB in the dialing control circuit, 2 machines of answering the call of CD.D7～D10 forms reverse-connection preventing circuit.MOV1 and MOV2 are voltage dependent resistor (VDR), connect with the earth, play the lightning protection effect.D11 is two-way Transient Suppression Diode, is used to suppress the influence of the moment spike pulse on the telephone wire.
J1, J2, Q5, Q6 etc. form the off-hook control circuit, and when the needs dialing communication, J2 is action earlier, disconnects telephone set, and J1 moves the connection circuit more then, prepares communication, realizes that alarm communication system is preferential, i.e. ruthless pre-emption function.Q3 and peripheral resistance capacitance are formed amplifying circuit, deliver on the telephone wire after the signal that T1 is sent here amplifies.
Elements such as Q4, LED, D1, D2 are formed the voltage auto-adjusting circuit, and while LED is double as line work pilot lamp also.The conducting of Q4 increases when line voltage distribution is higher, and shunting increases, and voltage drop is got off; Otherwise the Q4 conducting reduced when voltage was low, and shunting reduces, and voltage rises, thereby plays the effect of automatic regulation voltage, and this circuit is improved greatly to the adaptive faculty of different telephone lines.
C3, R16, R17, R18, C11, T1 etc. form the automatic observation circuit of telephone line.When telephone line just often, the C11 two ends have the above voltage of 3V at least, CPU regularly to IC3 transmitting supervisory signal, makes the IC3 conducting, thereby has electric current to flow through T1, in 2 output signals of IJ; When telephone wire is undesired, there is not voltage on the C11, even IC3 obtains the monitor signal that CPU sends, IC3 can conducting yet, does not just have signal output at 2 of the IJ of T1, can judge thus whether telephone wire is normal.
This example adopts the alert information content of LX6688 communication format transmission as follows:
Byte 1:10H, byte 2:19H, byte 3-6: the time (life time-division), byte 7-9: center identification number, byte 10-12: Customs Assigned Number, byte 13: the module numbering, byte 14: the defence area label, byte: 15-16 alert code-, byte 17: check code.
Wherein, the value 10H of byte 1 represents to have thereafter 16 data to wait for reception; The value of byte 2 is 19H, and it is expressed as alert class event information; Time: the time (being as the criterion) that incident takes place, comprise month day time-division totally 4 bytes with host clock; User grouping number: user grouping is totally 3 byte six figure places number, and the concrete implication of its packet number can define by the center; Customs Assigned Number: for being applicable to the large-capacity user networking, the host subscriber numbers and adopts 6 figure places to represent; The module numbering: the module numbering of this incident takes place in expression; Defence area numbering: the defence area numbering adopts double figures to form, and can represent the defence area of the individual numbering of 00H～FFH (promptly 0～255); The alert code: alert code 2 bytes are totally 4 figure places, and first figure place is " 1 " expression kainogenesis incident, are " 3 " expression recovery incident; Second and third, four bit representation alert information category codes; Check code: byte 1 is to the data message proof test value of byte 16.
This example adopts LX6688 communication format transmitted data amount information format as follows:
Byte 1:10H, byte 2:19H, byte 3-6: time (life time-division), byte 7-9: user grouping number, byte 10-12: Customs Assigned Number, byte 13: module numbering, byte 14: data parameters, byte: 15-16 data amount information, byte 17: check code.
When transmit among the LX6688 be data message the time, the high four-figure table registration of its byte 15 it is believed that the breath classification, the numeric representation data volume radix of low four and byte 16, low three (d0～d2) numeric representation exponential quantity of byte 14, d3 (0/1) expression exponential quantity is positive and negative, and d4 represents that this group data are lower than lower limit numerical value, and d5 represents that this group data are higher than higher limit, d6 keeps not usefulness, and d7 represents numerical value positive and negative (" 0 " just " 1 " is negative).
Communication flow is seen Fig. 6.
Claims (4)
1, a kind of internet alarm system that adopts special communication format, contain the center of receiving a crime report and alarm controller, alarm controller is by the communication interface circuit, bus interface circuit, power circuit, the CPU single chip machine controlling circuit, the defence area signal acquisition circuit, output detects control circuit and the incident memory circuit constitutes, it is characterized in that: described bus interface adopts expansion structure, install expansion module and keyboard on the bus additional, voltage comparator (IC1A) and (IC1B) constitute main frame respectively to module and module signal level shift circuit to main frame; Described communication interface circuit is by double-tone frequently the frame structure data signal generator that constitutes of combiner circuit and the transmission circuit of being made up of answer signal testing circuit, dialing control circuit.
2, the internet alarm system of the special communication format of employing as claimed in claim 1, it is characterized in that: the described double-tone frame structure data signal generator of combiner circuit formation frequently is meant that low frequency and two kinds of square waves of high frequency of being exported by the LX6688 communication format by CPU are converted to sine wave through amplifier (IC1C) with (IC1D), and sine-wave superimposed is after the signal generating circuit of C point output.
3, the internet alarm system of the special communication format of employing as claimed in claim 1 is characterized in that: the described double-tone frame structure data signal generator of combiner circuit formation frequently is meant that the single square wave of being exported by the LX6688 communication format by CPU is converted to sine wave after the signal generating circuit of C point output through amplifier (IC1C) or (IC1D).
4; the internet alarm system of the special communication format of employing as claimed in claim 1; it is characterized in that: the answer signal testing circuit is meant the circuit by two-stage is amplified and the one-level shaping circuit constitutes; the dialing control circuit is by (MOV1) and (MOV2) voltage dependent resistor (VDR) lightning protection circuit; and by (J1); (J2); (Q5); (Q6) the off-hook control circuit of Zu Chenging, (Q4); (LED); (D1); (D2) the voltage auto-adjusting circuit of Zu Chenging and by (D); (IC3); (R16); (R17); (R18); (C11); (T1) the automatic testing circuit of the telephone wire of Zu Chenging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035884 CN2828961Y (en) | 2005-10-26 | 2005-10-26 | Networking alarm system using special communication form |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035884 CN2828961Y (en) | 2005-10-26 | 2005-10-26 | Networking alarm system using special communication form |
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| CN2828961Y true CN2828961Y (en) | 2006-10-18 |
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| CN 200520035884 Expired - Lifetime CN2828961Y (en) | 2005-10-26 | 2005-10-26 | Networking alarm system using special communication form |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103778755A (en) * | 2012-08-23 | 2014-05-07 | 诺瓦尔有限责任公司 | Alarm device having a local energy storage unit, and bus-based alarm system |
| WO2019227374A1 (en) * | 2018-05-31 | 2019-12-05 | 深圳市蚂蚁雄兵物联技术有限公司 | Alarm method, apparatus and system, and electronic device |
| CN112880710A (en) * | 2021-01-14 | 2021-06-01 | 安徽科达自动化集团股份有限公司 | Photoelectric detection circuit and interval type photoelectric detector with same |
-
2005
- 2005-10-26 CN CN 200520035884 patent/CN2828961Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103778755A (en) * | 2012-08-23 | 2014-05-07 | 诺瓦尔有限责任公司 | Alarm device having a local energy storage unit, and bus-based alarm system |
| WO2019227374A1 (en) * | 2018-05-31 | 2019-12-05 | 深圳市蚂蚁雄兵物联技术有限公司 | Alarm method, apparatus and system, and electronic device |
| CN112880710A (en) * | 2021-01-14 | 2021-06-01 | 安徽科达自动化集团股份有限公司 | Photoelectric detection circuit and interval type photoelectric detector with same |
| CN112880710B (en) * | 2021-01-14 | 2022-04-22 | 安徽科达自动化集团股份有限公司 | Photoelectric detection circuit and interval type photoelectric detector with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHENGDU SCIENCE AND TECHNOLOGY DEVELOPMENT CO. Free format text: FORMER OWNER: YANG GUIXIANG Effective date: 20070928 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070928 Address after: Pixian 611730 Sichuan province Chengdu city Chengdu town of modern industrial port center business park Patentee after: Lixiang Tech Development Co., Ltd., Chengdu Address before: 610041 high building, No. nine Hing Road, Chengdu hi tech Development Zone, Sichuan, 6 Patentee before: Yang Guixiang |
|
| CX01 | Expiry of patent term |
Granted publication date: 20061018 |
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| EXPY | Termination of patent right or utility model |