CN201654974U - Alarm system - Google Patents

Abstract

The utility model relates to the field of monitoring and electronic controlling, aiming at providing an alarm system. The alarm system comprises a plurality of alarm devices, a plurality of alarm host machines and an alarm center, wherein the alarm devices are connected with the alarm host machines; and the alarm host machines are connected with the alarm center. The alarm system is characterized in that the alarm host machines are connected with the alarm center through a connecting mode of double closed ring alarm loop; the alarm host machines in the double closed ring alarm loop are connected with each other through an EIA/TIA-422 industrial bus serial standard; each alarm host machine comprises two serial ports which meet the industrial bus serial standard, wherein one serial port is taken as a data passageway, and the other serial port is taken as a standby passageway; and the alarm host machines set the data direction of an alarm signal, wherein the alarm center, the alarm host machine 1, the alarm host machine 2, the alarm host machine 3... and the alarm host machine n are sequentially taken as a direction A, and the reverse directions those of are taken as a direction B.

Description

Warning system

Technical field:

The utility model relates to the monitoring field of electric control, in particular, relates to a kind of warning system.

Background technology:

The description of technical term:

Alarm: the equipment that sends alerting signals such as sound, light, electricity after referring to detect unusually.Infrared probe for example, infrared correlation etc.

Alarm host machine: accept the alerting signal of alarm, transmit the equipment of information simultaneously by universal serial bus to the center.

Controlling alarm center: generally form, by the information of controlling alarm management platform software processes by the alarm host machine transmission by computing machine.

The warning system that the warning system design for scheme of monitoring field of electric control is made up of a plurality of alarms, alarm host machine and a cover controlling alarm center.The greatest drawback of this system is that in a single day the mediate alarm host machine of link goes wrong, and then the controlling alarm center can't judge whether alarm equipment alarm, up to finding fault.Without any the situation of prompting, the supervision disappearance to important place may cause an immeasurable loss.

The composition of the warning system of monitoring field of electric control all constitutes by open cycle system at present.Its signal flow be front end alarm to alarm host machine again to the controlling alarm center.The alarm of front end is to open circuit, short circuit, multiple connected mode such as tamper-proof are arranged between the alarm host machine.This agreement connected mode has guaranteed that the alerting signal of alarm of front end and the damage signal of circuit can both be accepted by alarm host machine.Therefore the connection of this section is reliable.But alarm host machine to the signal transmission between the controlling alarm center be adopt EIA TIA-485,

EIA TIA-422, EIA the bus type signal transfer mode of TIA-232.Alarm host machine is arrived between the controlling alarm center with a connection connection.If a plurality of alarm host machine then adopt a plurality of connection ways of connecting between bus serial connection or a plurality of alarm host machine and the controlling alarm center.Concrete type of attachment is shown in accompanying drawing 1, accompanying drawing 2.

The utility model content:

The purpose of this utility model is to overcome deficiency of the prior art, and a kind of warning system is provided.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions.

A kind of warning system comprises alarm, alarm host machine, alarm center, and alarm is connected with alarm host machine, and alarm host machine is connected with alarm center; Alarm host machine and alarm center adopt the connected mode of two closed loop alarm circuits; Alarm host machine in two closed loop alarm circuits adopts the industrial bus sata standard of EIA/TIA-422 to connect, each alarm host machine has 2 serial ports to meet above-mentioned industrial bus sata standard, one of them is as data channel, another is as backup path, alarm host machine is provided with the data direction of alerting signal, successively with alarm center, alarm host machine 1, alarm host machine 2, alarm host machine 3 ..., alarm host machine n is the A direction, then it is oppositely as the B direction.

As a kind of improvement, described warning system comprises following functional module:

(1) the serial communication mouth is two;

(2) storer SRAM a slice;

(3) relay output module comprises relay n group, can be by the alarm center setting;

(4) warning indicating device comprises n of the indication of reporting to the police, and state indicating device comprises n of state indication;

(5) ZEM comprises alarm n, can be set to open circuit, short circuit, tamper-proof three kinds of modes;

(6) the CPU module is one;

Wherein: ZEM connects the alerting signal sampling module, the alerting signal sampling module connects CPU, CPU connected storage SRAM, CPU is connected with warning indicating device and state indicating device by data bus, relay output module links to each other with CPU by data bus, and CPU is by two serial communication mouths of communication bus peripheral hardware.

Traditional data connected mode, in case broken string appears in the bus place, or equipment breaks down, then alarm center can't obtain the alert data of front end, also can't understand the working condition of current alarm host machine simultaneously.Compared with prior art, the utility model is set up a two closed loop alarm circuit system.And the difference of previously described open loop warning system is the loop problem that has solved between alarm host machine and the alarm center.In case equipment failure, or bus disconnects then that alarm host machine can change data loop according to line conditions, keeps the unimpeded of data.Alarm center will in time reflect the failure condition of circuit simultaneously.

Description of drawings:

Fig. 1 is that the utility model alarm host machine and alarm center adopt bus concatenation type connection diagram;

Fig. 2 is that the utility model alarm host machine and alarm center adopt bus tapping type connection diagram;

Fig. 3 is two closed loop alarm circuit synoptic diagram in the utility model;

Fig. 4 is an alarm host machine internal hardware connection diagram in the utility model;

Fig. 5 is the serial ports connection diagram of alarm host machine in the specific embodiment;

Fig. 6 is an alarm failure synoptic diagram in the specific embodiment;

Fig. 7 is the data routing synoptic diagram of alarm circuit in the specific embodiment.

Embodiment:

In conjunction with the accompanying drawings, below the utility model is further described.

Set up a two closed loop alarm circuit, and the difference of open loop warning system is the loop problem that has solved between alarm host machine and the alarm center.In case equipment failure, or bus disconnects then that alarm host machine can change data loop according to line conditions, keeps the unimpeded of data.Alarm center will in time reflect the failure condition of circuit simultaneously.Structural representation such as Fig. 3.

Alarm host machine in two closed loop alarm circuits adopts the industrial bus sata standard of EIA/TIA-422 to connect, and each alarm host machine has 2 serial ports to meet above-mentioned industrial bus sata standard.One of them is as data channel, and another is as backup path.Alarm host machine will be provided with the data direction of the alerting signal of alarm host machine according to the quantity of equipment, if---〉alarm host machine 1---〉alarm host machine 2---〉alarm host machine 3---〉alarm center is as the A direction,---〉alarm host machine 3---〉alarm host machine 2---〉alarm host machine 1 with alarm center then---with alarm center〉alarm center is as the B direction.The alerting signal that alarm center can be provided with alarm host machine 1 is the A direction, and alarm host machine 2,3 is the B direction.Then the alerting signal of alarm host machine 2 generations is sent to alarm center again by alarm host machine 3.

If broken string between alarm host machine 2 and the alarm host machine 3, then the alerting signal of alarm host machine 2 generations will be sent to alarm center by alarm host machine 1.In a single day guaranteed like this line fault to occur, warning message still can be sent to alarm center.

In order to satisfy in two closed loop alarm circuit systems to the alarm host machine performance demands, in hardware design, consider following functional module, as Fig. 4:

(1) communication port is two, satisfies the redundancy of data channel in two closed loop alarm circuit systems,

(2) storer SRAM a slice guarantees data obliterated data not in accepting and sending.

(3) relay n group can be by the alarm center setting.

(4) the warning indication is n, can report to the police by flash for prompting when reporting to the police, and also has state to indicate simultaneously.

(5) alarm inserts n, can be set to open circuit, short circuit, tamper-proof three kinds of modes.

(6) the CPU module is one.

Satisfy the alarm host machine function of two closed loop alarm circuit systems, the requirement that at first will on protocol frame, set up this function.Concrete agreement is set up as follows:

(1) protocol format:

The form of agreement adopts fixed form, is convenient to the intercepting of data like this.The increase head and tail is the convenience for data read in agreement.Simple accumulation calculating is adopted in the verification of agreement, guarantees the correctness of data.

(2) connection judgment between the alarm host machine

According to there being two communication ports to connect between two closed loop alarm circuit system architecture synoptic diagram 3 alarm host machine, therefore increased a hello protocol that faces equipment mutually.For example main frame 1 is called out main frame 2 every 100MS, and the calling of 2 pairs of main frames 1 of main frame should be made in 50MS and replying.Otherwise main frame 2 also is every 100MS main frame 1 to be called out.Therefore alarm host machine does not receive the call signal of facing main frame mutually in 100MS, thinks then that the transmission line that faces main frame mutually disconnects or faces main frame mutually to break down.It will send a main frame 1 and main frame 2 connection error orders to alarm center by another circuit.

(3) connection between the alarm host machine

In order to guarantee the order of data interface channel, we are connected with certain regulation at the serial ports of alarm host machine, the concrete connection as shown in Figure 5:

A, B direction are two opposite data flow direction, and it has guaranteed each alarm host machine under situation about breaking down, and whole warning system still can normally be moved.

(4) alarm failure is handled

As shown in Figure 6, the signal of alarm host machine all sends data by the A direction to main frame.After being connected between alarm host machine 2 and the alarm host machine 3 disconnects, alarm center can not receive the data of alarm host machine 3 by original direction, therefore must send information to alarm center according to current fault state in total system.

The mode that information transmits is that alarm host machine 2 sends a broken string order by A channel to alarm center, and alarm host machine 3 also sends a broken string order by the B passage to alarm center simultaneously.Break point just can be judged in the center after receiving two orders.Make the processing of fault become quick.

(5) alarm center

As the core processing equipment of whole pair of closed loop alarm circuit system, can one cover warning system software be installed with a station server.But in the PORT COM that must have on the hardware more than two or two, and PORT COM must be paired, because the data of A, B two are finished by two ports in total system.We can define a port arbitrarily is that the direction that the direction sent is accepted to another port is the A direction, otherwise then is the B direction.

Must possess following function as alarm center:

1, the quantity of alarm host machine

By to the call command of whole pair of closed loop alarm circuit alarm host machine (each alarm host machine after the call command at the center of receiving, acknowledgement command of loopback immediately.Comprised an accumulative total in this order, the call command with the center is forwarded to next equipment simultaneously), the center can obtain the accumulative total of panalarm, i.e. the alarm host machine number.For fear of the error of calculation of equipments, we can send call command simultaneously in two directions of A, B.The accumulative total that such two directions obtain is consistent.

2, the setting of direction message

By call command, can obtain the quantity of the alarm host machine in whole pair of closed loop alarm circuit, and the distribution of address.Quantity that like this can alarm host machine is set up the data that a database is preserved alarm host machine.

Since the equipment in the middle of two closed loop alarm circuits, connection as shown in Figure 5, and the data of alarm host machine 2 have only by the forwarding of alarm host machine 1 and 2 and could be accepted by alarm center.So the setting of a shortest path is arranged, as shown in Figure 7 this moment.

7 alarm host machine are arranged in whole pair of closed loop alarm circuit, and the address is from D1 ~ D5.If alarm host machine D2 sends information by the B passage to alarm center, it must pass through D3, D4, D5 and just can be sent to.If send information to alarm center by A channel, need only be through the forwarding of D1.Clearly, at whole pair of closed loop alarm circuit a shortest path is arranged all.The formula of choosing in path is:

T=M/2 M is accumulative total (sum of alarm host machine)

T is exactly a main frame number of distinguishing two directions as a result.If M is an odd number, then T+1 can be any one direction in two directions.Aforementioned algorithm is not consider that data transmit time-delay in the line.

3, the redundancy of two closed loops

Except guaranteeing in the software systems of alarm center, also will possess the detecting of system the closed loop at hardware, communication line.

Warning system should be called out total system after second every n, grasps the state of alarm host machine in two closed loop alarm circuits at any time.Increasing or reducing under the situations such as alarm host machine, line fault, device damage, line fault eliminating back equipment recovery, automatically the setting of alarm host machine in two closed loop alarm circuits being adjusted automatically need not manual intervention.Accomplish intelligent control really.Guarantee the safe and reliable operation of two closed loop alarm circuit systems.

At last, it is also to be noted that what more than enumerate only is specific embodiment of the utility model, obviously, the utility model is not limited to above examples of implementation, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.

Claims (2)

1. a warning system comprises alarm, alarm host machine, alarm center, and alarm is connected with alarm host machine, and alarm host machine is connected with alarm center; It is characterized in that: alarm host machine and alarm center adopt the connected mode of two closed loop alarm circuits; Alarm host machine in two closed loop alarm circuits adopts the industrial bus sata standard of ETA/TIA-422 to connect, each alarm host machine has 2 serial ports to meet above-mentioned industrial bus sata standard, one of them is as data channel, another is as backup path, alarm host machine is provided with the data direction of alerting signal, successively with alarm center, alarm host machine 1, alarm host machine 2, alarm host machine 3 ..., alarm host machine n is the A direction, then it is oppositely as the B direction.

2. warning system according to claim 1 is characterized in that, described warning system comprises following functional module:

(1) the serial communication mouth is two;

(2) storer SRAM a slice;

(3) relay output module comprises relay n group, can be by the alarm center setting;

(4) warning indicating device comprises n of the indication of reporting to the police, and state indicating device comprises n of state indication;

(5) ZEM comprises alarm n, can be set to open circuit, short circuit, tamper-proof three kinds of modes;

(6) the CPU module is one;

Wherein: ZEM connects the alerting signal sampling module, the alerting signal sampling module connects CPU, CPU connected storage SRAM, CPU is connected with warning indicating device and state indicating device by data bus, relay output module links to each other with CPU by data bus, and CPU is by two serial communication mouths of communication bus peripheral hardware.

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