CN100341036C - Safety early warning method and system for super highway - Google Patents
Safety early warning method and system for super highway Download PDFInfo
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- CN100341036C CN100341036C CNB031133282A CN03113328A CN100341036C CN 100341036 C CN100341036 C CN 100341036C CN B031133282 A CNB031133282 A CN B031133282A CN 03113328 A CN03113328 A CN 03113328A CN 100341036 C CN100341036 C CN 100341036C
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Abstract
The present invention relates to a safety instant early warning method for expressways and a safety instant early warning system thereof, which belongs to the technical field of traffic safety facilities. In the present invention, a network is composed of subsystems, node points of the subsystems comprise signal switches and alarm devices, and the network is distributed along one side of an expressway guardrail. When the node points receive accident signals, the information is immediately transmitted through the network, and the alarm devices are caused to send alarm signals. Thereby, when accidents suddenly occur at certain points of the expressway, as long as someone sends accident signals through the signal switch nearby, the safety instant early warning system of the expressway guardrail immediately makes response. Not only can a monitoring center reflect information such as accident sites, etc. in time, the alarm devices along the expressway behind certain distance of the accident sites can also alarm in time to remind drivers to immediately slow down. Thereby, continuous overtaking collision accidents are prevented from occurring, and the damage of unexpected accidents is reduced to the minimum limit. The present invention has the advantages of easy realization and low cost.
Description
Technical field
The present invention relates to the instant method for early warning of a kind of safety, especially a kind of instant method for early warning of safety that is applied on the highway is both the instant early warning system of safety that the invention still further relates to this method of realization, belongs to the traffic safety facilities technical field.
Background technology
Along with expanding economy, highway is popularized in many countries.At present, make one of traffic problems that countries in the world extremely have a headache be: highway (comprising closed high-speed channel such as bridge, tunnel) is because diastrous weather or weathers such as dense fog, sleet, be easy to take place rear-end collision accident, the American-European faster developed country of rescue speed after even accident takes place, also can't avoid when first car has an accident, follow-up vehicle knocks into the back continuously because the speed of a motor vehicle is high, to such an extent as to the major traffic accidents that tens of and even up to a hundred vehicles knock into the back continuously happen occasionally, the result causes heavy losses to the people's lives and property.Applicant is that this type of pernicious continuous rear-end collision is crossed in personal experience.
Retrieval is found, application number is 98119491.5, the applying date is that the Chinese patent of 1998.10.18 discloses a kind of dangerous alarm for express-way, when the vehicle of running on expressway hinders former thereby when hindering other vehicle current at a high speed with accident etc. for some reason, the driver opens the emission coefficient of dangerous alarm for express-way immediately, send alerting signal, receiving system by the dangerous alarm for express-way that is hindered vehicle of cruising in the certain limit receives, alarm sends warning: alerting driver, vehicle front has roadblock, deceleration is gone slowly, take care, stop rear-end collision.This alarm needs vehicle to be equipped with wireless transceiver system, and can't carry out information interchange with vehicle control center.
Another application for a patent for invention that application number is 02113003.5, the applying date is 2002.05.14 discloses a kind of early warning system and method for early warning thereof that prevents that highway from knocking into the back and colliding.This system comprises central processing unit CP and the detection line DL that is made up of microwave detector, road terminal and alarm indicator; Detection line DL is installed in the inboard of express highway all-way two-way lane equally spacedly and is connected with central processing unit CP by data transmission link L1, each detection line is connected with detection line before and after it respectively, and the road terminal among the detection line DL is connected with alarm indicator with microwave detector respectively.This method for early warning is: the vehicle that the microwave detector perception is passed through, traffic signals are handled and sent to the road terminal to the signal of microwave detector acceptance and the information of detection line transmission.The invention has the beneficial effects as follows the express way driving safety monitoring that has realized complete meaning, solved the highway collision problem that knocks into the back, improve the operational efficiency of highway.But the technical scheme cost of investment of this patented claim is big, and might produce false alarm, implements relatively difficulty.
Summary of the invention
The objective of the invention is to: in time remind follow-up vehicle deceleration or parking when proposing a kind of can having an accident in any highway section, thereby prevent the instant method for early warning of the expressway safety that knocks into the back continuously, the present invention simultaneously also will provide the corresponding system of this method of realization, this system should cost economy, realize easily, and be convenient to realize concentrated controling management.
In order to reach the above object, the technical scheme of the instant method for early warning of expressway safety of the present invention is:
Implementation step A-D in the instant early warning system of expressway safety;
---the described instant early warning system systems that at least two above subsystems are formed that serve as reasons connect by network between described each subsystem;
---each subsystem has all contained the single chip machine controlling circuit of organization and administration effect, and comprises at least two nodes, connects by the subsystem internal network between each node;
---each node contains the warning device of signaling switch and relay switch control, the signal input part of described single chip machine controlling circuit connects signaling switch, the control signal output ends of described single chip machine controlling circuit is succeeded electric switch, described single chip machine controlling circuit communication terminal network;
---the signaling switch of each node and the warning device of relay switch control distribute in freeway guardrail one side along the line by the address number order in each subsystem;
---described network is a public telephone network; Described subsystem mainly is made up of telephone signal transmitting-receiving node, control circuit node and indicating circuit and repeater; Described control circuit node and indicating circuit are connected in parallel on the bus, are connected in series with the telephone signal transmitting-receiving node; Described repeater adopts dtmf signal transmission trunking device; Described telephone signal transmitting-receiving node is made up of with the total transceiver that is connected the internal control node the control circuit on telephone signal transceiver, the telephone signal node; Described control circuit node is made up of the control circuit on control circuit transceiver, the control circuit node and keyswitch, relay switch; Described indicating circuit is made up of signal receiver, indicating circuit and alarm device;
Under A, the normal condition, system is in the early warning monitoring state;
B, after the node signal switch in certain subsystem is received trouble-signal, this node sends the accident information that contains this node address by the subsystem internal network, and then by network accident information is transferred to other subsystems;
C, each subsystem that receives accident information send to relevant each node with the controlling alarm command signal;
D, each node that receives controlling alarm instruction make corresponding warning device send alerting signal by relay switch.
Obviously, implement the instant early warning system of expressway safety of above method:
---become by at least two groups of subsystems, connect by network between described each subsystem;
---each subsystem has all contained the single chip machine controlling circuit of organization and administration effect, and comprises at least two nodes, connects by the subsystem internal network between each node;
---each node contains the warning device of signaling switch and relay switch control, the signal input part of described single chip machine controlling circuit connects signaling switch, the control signal output ends of described single chip machine controlling circuit is succeeded electric switch, described single chip machine controlling circuit communication terminal network;
---the signaling switch of each node and the warning device of relay switch control distribute in freeway guardrail one side along the line by the address number order in each subsystem;
---described network is a public telephone network; Described subsystem mainly is made up of telephone signal transmitting-receiving node, control circuit node and indicating circuit and repeater; Described control circuit node and indicating circuit are connected in parallel on the bus, are connected in series with the telephone signal transmitting-receiving node; Described repeater adopts dtmf signal transmission trunking device; Described telephone signal transmitting-receiving node is made up of telephone signal transceiver, control circuit and total transceiver of being connected the internal control node; Described control circuit node is made up of the control circuit on control circuit transceiver, the node and keyswitch, relay switch; Described indicating circuit is made up of signal receiver, indicating circuit and alarm device;
And
---described system under normal circumstances is in the early warning monitoring state;
---described subsystem is in order to after wherein a node signal switch is received trouble-signal, and correspondent control circuits is sent the accident information that contains this node address by the subsystem internal network, and then by network accident information is transferred to other subsystems;
---described each subsystem sends to relevant each node in order to after receiving accident information with the controlling alarm command signal;
---described warning device receives the controlling alarm instruction in order to execution, makes the control of each node by relay switch, sends alerting signal.
Like this, when the burst accident of highway somewhere, as long as there be the signaling switch of people by nearby to send trouble-signal herein, the instant early warning system of expressway safety responds immediately, not only information such as accident spot can in time be reacted by Surveillance center, and the instant alarming of warning device on the way of certain distance after the accident spot.Remind the driver to slow down immediately and go slowly, thereby avoid the generation of knocking into the back continuously, the infringement of burst accident is reduced to Min..
Compare with above 98119491 patented claims, owing to need not on vehicle, to be equipped with complicated R-T unit, therefore easy to implement; And compare with 02113003 patented claim, because grafting easily (for example public telephone network) on existing diverse network, therefore not only realization easily, and cost economy.
Description of drawings
Below in conjunction with accompanying drawing technical scheme of the present invention is further described.
Fig. 1 is the overall plan logical organization block diagram of one embodiment of the invention.
Fig. 2 is the inner structure block diagram of subsystem among Fig. 1 embodiment.
Fig. 3 (a) and (b), (c) are respectively Control Node among Fig. 1 embodiment, indicating circuit, dtmf signal transmission trunking device circuit theory diagrams.
Fig. 4 is the system layout structural representation of Fig. 1 embodiment.
Fig. 5 is Fig. 1 embodiment system groundwork process block diagram (a lamp representative warning device).
Fig. 6 (a) and (b), (c), (d) are the software flow patterns of control circuit among Fig. 1 embodiment, display circuit, telephone transceiver and main frame uC (microcomputer, i.e. single-chip microcomputer).
Fig. 7 is the overall plan logical organization block diagram of this programme embodiment two.
Fig. 8 is the cut-away view of this programme embodiment two subsystems.
Fig. 9 (a) and (b) are respectively Control Node and the master controller circuit theory diagrams of embodiment two.
Figure 10 (a) and (b) are respectively the main process flow diagram of software of control circuit uC, the master controller uC of embodiment two.
Figure 11 is the overall plan logical organization block diagram of this programme embodiment three.
Figure 12 is the spread pattern figure of this programme embodiment three.
Embodiment
Embodiment one
1, overall state
The instant early warning system logical organization of the expressway safety of present embodiment relation as schematically shown in Figure 1, this system by the signal input-output unit that is positioned at ground floor, be positioned at the subsystem signals transmission management device of the second layer and be positioned at the 3rd layer host signal transmission management device and constitute.Wherein first, second layer physically closes in a microcomputer subsystem, and first level uses as the expansion module of second level, first and second layer and interconnecting by public telephone network between the 3rd layer.Geographically, the regular distribution of warning device, because ready-made public telephone network is arranged, native system adopts the master-slave mode hierarchy, total system is made of a plurality of subsystems, adopt a subsystem to unify control every a segment distance, each subsystem is by an one chip microcomputer organization of unity and management.
First level is realized the input of keyswitch signal and the output of relay switch control signal, and the concrete components and parts of employing are mainly used in the transfer function of finishing switching signal according to the organization plan decision of institute's employing microcomputer subsystem.The second level core component is a single-chip microcomputer, and on the one hand, single-chip microcomputer receives the keyswitch signal of this microcomputer subsystem inside; On the other hand, receive the control signal that main frame transmits, single-chip microcomputer sends signal to the relay switch steering order of this microcomputer subsystem or by telephone network to main frame according to the program that sets in advance.Tri-layer mainly is made of a PC bus computer and the single-chip microcomputer that plays the overhead control effect (main frame, or total uC), leaves administrative center usually in.The PC bus computer can provide good man computer interface, and it obtains system running state information from single-chip microcomputer, shows the figure of the current running status of reflection system intuitively; Single-chip microcomputer is accepted the information that the microcomputer subsystem passes over, and in time handles these information, and steering order is passed to other microcomputer subsystems.
System global structure is for to be made of main frame and a plurality of microcomputer subsystem.Host Administration and each microcomputer subsystem work of coordination.In this primary and secondary structure, even certain subsystem is when breaking down, total system still can be worked.For reliability and the security that improves total system, present embodiment increases a backup host, so that keep total system operate as normal still when main frame breaks down.
2, subsystem
Fig. 2 is the subsystem cut-away view of present embodiment based on public telephone network.This subsystem mainly is made up of telephone signal transmitting-receiving node, control circuit node and indicating circuit node and repeater.Control circuit node and indicating circuit node are connected in parallel on the bus, are connected in series with the telephone signal transmitting-receiving node.Repeater adopts dtmf signal transmission trunking device.The telephone signal transmitting-receiving node is made up of telephone signal transceiver, control circuit and total transceiver of being connected the internal control node.The control circuit node is made up of the control circuit on control circuit transceiver, the node and keyswitch, relay switch.Relay switch is controlled the warning of warning device and is not reported to the police.The indicating circuit node is made up of signal receiver, indicating circuit and alarm device.Alarm device is arranged in array, makes things convenient for the observation of people's vision.
The circuit theory of subsystem is shown in Fig. 3 (a) and (b), (c), and wherein Fig. 3 (a) is the Control Node circuit theory diagrams, and Fig. 3 (b) is the circuit theory diagrams of indicating circuit, and Fig. 3 (c) is dtmf signal transmission trunking device circuit theory diagrams.Be not difficult to find out by figure, in the Control Node circuit, master controller adopts the ATMEL89C51 single-chip microcomputer, and its signal output part is succeeded electrical equipment through signal drive circuit, and its data output, input end connect the dtmf signal circuit by DTMF transceiving chip, signal amplification circuit and change-over switch; In indicating circuit, the DTMF transceiver is followed, amplifies, entered to dtmf signal through signal, gives single chip computer AT MEL89C51 input; In signal transmission trunking device circuit, the DTMF transceiver is followed, amplifies, entered to dtmf signal through signal, then from single chip computer AT MEL89C51 input and output, signal transmitted in both directions.
In brief, each subsystem in embodiment one overall plan all comprises some nodes, and each node is made up of transceiver, control circuit, keyswitch and relay switch.Transceiver is taken place by corresponding D TMF signal and receiving chip constitutes.Keyswitch is to inductive switch A and B.Control circuit uses a slice singlechip chip, finishes all control tasks.When button was pressed, the control circuit of node sent node address information and key information by the transceiver on the node on bus.Simultaneously all nodes on the bus all will receive information, and judge corresponding operating according to the information that receives, and realize the warning of alarm device and will not report to the police by the control relay switch.Public telephone is online because controller one end in the subsystem is connected, and an other end is connected on the bus, therefore can come with the mutual control information of other subsystem by public telephone.
The warning device of the signaling switch of each node and relay switch control follows into direction (two-way) distribution by the address number order in highway one side in each subsystem, forms distributed architecture illustrated in Figure 4.
3, the course of work
The groundwork flow process of present embodiment total system is referring to Fig. 5.Under the normal condition, total system is in the early warning monitoring state.
When burst accident, the alarmer presses the keyswitch in the gauge tap circuit, such as what press is A1, and the control circuit that then is attached thereto sends the address information (determining the signal occurrence positions) and the key information (what determine realization is the 1st function) at this place on bus by the transceiver on the node 2.
All transceivers on the subsystem bus all will receive information, total transceiver then passes to the switchboard telephone control circuit with this signal by telephone signal transceiver, public telephone network, by switchboard telephone control circuit (total uC) decision corresponding information is passed to other relevant subsystem processes once more.Each control circuit of this subsystem and correlation subsystem is judged the implementation corresponding operating according to the information that receives by software, the warning that realizes warning device by the control relay switch with do not report to the police, that is: A1 closes, all warning device after the A1 (2-100 the warning device of Fig. 4 and be arranged in this subsystem after whole warning devices of all subsystems) the full warning, whole warning devices of all subsystems that the 1st warning device before the A1 and this subsystem are preceding are not reported to the police.
The switch B1 if the instant alarming person pushes button, the control circuit that is attached thereto sends the address information (determining the position) and the key information (what determine realization is the 2nd function) at this place on bus by the transceiver on the node 2, all transceivers on the subsystem bus will receive information, total transceiver then passes to the switchboard telephone control circuit with this signal by telephone signal transceiver, public telephone network, by the decision of switchboard telephone control circuit corresponding information is passed to other relevant subsystem processes once more.This subsystem and correlation subsystem are judged the implementation corresponding operating according to the information that receives by software, the warning that realizes warning device by the control relay switch with do not report to the police.That is: B1 closes, all m warning devices (m warning device of individual switches control can be inter-subsystem) warning entirely after the B1, all the other all warning devices do not report to the police entirely (warning device that comprises other subsystems).
The software flow pattern of control circuit, display circuit, telephone transceiver and main frame uC is respectively referring to Fig. 6 (a) and (b), (c), (d) in the system.
By the software flow pattern of the single control circuit uC of Fig. 6 (a) as can be seen, it mainly receives the keyswitch A that is attached thereto, the signal of B, simultaneously according to keyswitch A, the signal of B, the unlatching and the closure of the relay switch that control is attached thereto, and send keyswitch A to other control circuits uC, the display circuit uC of this microcomputer subsystem and telephone transceiver uC, the signal of B, simultaneously, the instruction that reception is transmitted from this microcomputer subsystem, and relay switch control to being attached thereto; By the software flow pattern of the single display circuit uC shown in Fig. 6 (b) as can be seen, it mainly receives the keyswitch A of each control of this microcomputer subsystem, the signal of B, and, show corresponding signal (the display circuit uC software flow of host computer system is similarly) to these signals judgements; By the software flow pattern of the telephone transceiver uC shown in Fig. 6 (c) as can be seen, it mainly receives the instruction that each control circuit of this microcomputer subsystem uC transmits, and to the keyswitch A of main frame uC, the signal of B, simultaneously, receive the information that main frame uC transmits, and the instruction that need carry out to each control circuit of this microcomputer subsystem uC, display circuit uC; By the software flow pattern of the main frame uC shown in Fig. 6 (d) as can be seen, main frame uC mainly receives the instruction that each microcomputer subsystem uC transmits, and sends the instruction of control then to other microcomputer subsystems uC.
The function that total system realizes can reduce:
(1) closing with A is the switch (Fig. 4) of mark, and all warning devices are reported to the police entirely after this switch, and all warning devices are not reported to the police before this switch;
(2) closing with B is the switch of mark, continuous m after this switch (m=1,2 ..., 10) individual warning device warning, all the other all warning devices are not reported to the police;
(3) function of each switch is separate, is independent of each other;
(4) each operation of function (1) or (2) all is reflected on the indicator board at display screen and center.
Because all on bus, have receiver, indicating circuit to link to each other in each subsystem with display screen, between the indicator board at switchboard telephone control circuit and center similar indicating circuit is arranged also simultaneously, the each operation of person all is reflected on the indicator board at display screen and center therefore can to guarantee the instant alarming.
Embodiment two
The overall plan of this enforcement (referring to Fig. 7) is basic identical with embodiment one, this overall plan building-block of logic and embodiment one building-block of logic are similar, it can not pass through public telephone network between first and second level and tri-layer, but interconnects by twisted-pair feeder.
Subsystem of this enforcement and embodiment one are basic identical, and difference is to adopt differential transfer, adopt the mode of transmission trunking to carry out data communication, and the receiving end direct decoding is controlled relay switch.
The inner structure of present embodiment subsystem as shown in Figure 8.This subsystem is made up of master controller, control circuit node and indicating circuit node, repeater.Master controller, control circuit node and repeater serial connection, in parallel with the indicating circuit node.Repeater adopts dtmf signal transmission trunking device.And, the gauge tap input signal of control system enters the I/O interface of single-chip microcomputer through processing such as photoelectricity isolation, shapings, enter single-chip microcomputer again, singlechip CPU is according to the situation that input information is handled, and whether decision sends the steering order of further operation; The output control signal of control system is isolated through photoelectricity, sends to each drive node, and by relay switch control warning device, control signal needs constantly to amplify in transmission again.
The circuit theory of present embodiment subsystem is shown in Fig. 9 (a) and (b).Wherein the Control Node circuit theory diagrams of Control Node circuit theory diagrams shown in Fig. 9 (a) and embodiment one subsystem are basic identical, difference is to increase the transmission circuit of a cover signal, emphasize the transmission-receiving function of signal during realization more, switch by circuit, signal can be passed to next node.Master controller circuit theory diagrams shown in Fig. 9 (b), similar to the Control Node circuit theory diagrams, the master controller circuit does not contain keyswitch and relay switch control element, and only the signal that main frame, other subsystem master controllers or each Control Node of this subsystem are sended over is handled.Master controller circuit theory diagrams shown in the circuit theory diagrams of main frame and Fig. 9 (b) are basic identical, and difference is that it links to each other with subsystem, and what send and receive all is the information of subsystem.
The indicating circuit schematic diagram of embodiment two subsystems, the indicating circuit schematic diagram of signal transmission trunking device circuit theory diagrams and embodiment one subsystem, signal transmission trunking device circuit theory diagrams are identical, are not described in detail in addition at this.
The control circuit of present embodiment subsystem, display circuit, master controller all comprise uC separately, and the main flow process of the software of display circuit uC is identical with embodiment one.The main flow process of the software of control circuit uC, master controller uC is respectively shown in Figure 10 (a) and (b).Wherein Figure 10 (a) is the software flow pattern of single control circuit uC, it mainly receives the keyswitch A that is attached thereto, the signal of B, and according to keyswitch A, the unlatching of the relay switch that the signal controlling of B is attached thereto and closure, and send keyswitch A to the master controller uC of this microcomputer subsystem and display circuit uC, the signal of B, simultaneously, receive the instruction of transmitting from this microcomputer subsystem master controller uC, and next Control Node is controlled or be transferred to the relay switch that is attached thereto.Figure 10 (b) is the software flow pattern of subsystem master controller uC, the keyswitch A of its main reception control circuit uC transmission, the signal of B, control circuit uC, display circuit uC to this microcomputer subsystem send keyswitch A, the signal of B, simultaneously, receive the instruction of transmitting from main frame, and the information of the relay switch of this subsystem being controlled or being sent to main frame according to signal.
Embodiment three
Present embodiment (Figure 11) is different with the host-guest architecture of embodiment one, embodiment two overall plan building-block of logic, it is a kind of distributed parallel structure of open loop, each microcomputer subsystem does not have master slave relation, between each microcomputer subsystem by twisted-pair feeder interconnection (Figure 12).
With public telephone network in the subsystem among Fig. 2 and the deletion of telephone signal transceiver, be the subsystem structure of present embodiment.The subsystem structure of present embodiment and principle of work and the course of work can be illustrated with reference to Fig. 2.
In the figure, in the subsystem each Control Node by transceiver, control circuit, keyswitch and relay switch are formed.Transceiver is taken place by corresponding D TMF signal and receiving chip constitutes.Keyswitch is to inductive switch A and B.Control circuit uses a slice singlechip chip, finishes all control tasks.When button is pressed, the control circuit of node sends node address information and key information by the transceiver on the node to master controller, send signal by master controller one by one to all nodes of this microcomputer subsystem, each node receives information, and judge corresponding operating according to the information that receives, and realize the warning of warning device and do not report to the police by the control relay switch.Simultaneously, this master controller uniaxially sends information to its adjacent next microcomputer subsystem.
After adjacent microcomputer subsystem is received master controller information, one by one send signal by the master controller of current microcomputer subsystem to all nodes of this microcomputer subsystem according to information, each node receives information, carries out corresponding operating, realizes the warning of warning device and does not report to the police.Simultaneously, this master controller again uniaxially send information to its adjacent microcomputer subsystem.Next microcomputer subsystem is carried out identical processing, two microcomputer subsystems at end up to the system both sides.
Generally speaking, above embodiment has following remarkable advantage;
1, reliability height---because each control function in the multimachine control is disperseed, every micro computer task balance reduces, and function is clearer and more definite, thereby reliability is improved.And have many micro computers that function is identical, constitute the one-level hardware system of micro computer, when wherein certain when breaking down, can be in system the reconstruct guest machine, therefore further improved the reliability of system;
2, response speed is fast---because each micro computer concurrent working, most of control function is distributed in each subsystem, and each subsystem is independently processed and process information, sends the control corresponding instruction, therefore reduce transmission of Information, improved computing and control rate;
3, maintenance and expansion are convenient---owing to adopt modular construction, each module has independently function, therefore designs simple and directly, and debugging is easily, and is easy to maintenance, has desirable adaptability and dirigibility;
4, ratio of performance to price height---owing to adopt cheap micro computer, and, in multi-computer system, the general serial communication mode that adopts, reduced the cost of data transmission, therefore not only guaranteed due function, and price has been well below the medium-mini computer centralized control system.
In addition to the implementation, the present invention can also have other embodiments.For example, the connection network of system can also be broadband, carrier wire or even wireless network; After accident took place, the mode of sending trouble-signal can be manual, remote control, and was perhaps automatic, or the like.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (6)
1. the instant method for early warning of expressway safety is characterized in that: implementation step A-D in the instant early warning system of expressway safety;
---described instant early warning system is the system that is made up of two above subsystems, connects by network between described each subsystem;
---each subsystem has all contained the single chip machine controlling circuit of organization and administration effect, and comprises at least two nodes, connects by the subsystem internal network between each node;
---each node contains the warning device of signaling switch and relay switch control, the signal input part of described single chip machine controlling circuit connects signaling switch, the control signal output ends of described single chip machine controlling circuit is succeeded electric switch, described single chip machine controlling circuit communication terminal network;
---the signaling switch of each node and the warning device of relay switch control distribute in freeway guardrail one side along the line by the address number order in each subsystem;
---described network is a public telephone network; Described subsystem mainly is made up of telephone signal transmitting-receiving node, control circuit node and indicating circuit and repeater; Described control circuit node and indicating circuit are connected in parallel on the bus, are connected in series with the telephone signal transmitting-receiving node; Described repeater adopts dtmf signal transmission trunking device; Described telephone signal transmitting-receiving node is made up of with the total transceiver that is connected the internal control node the control circuit on telephone signal transceiver, the telephone signal node; Described control circuit node is made up of the control circuit on control circuit transceiver, the control circuit node and keyswitch, relay switch; Described indicating circuit is made up of signal receiver, indicating circuit and alarm device;
Under A, the normal condition, system is in the early warning monitoring state;
B, after the node signal switch in certain subsystem is received trouble-signal, this node sends the accident information that contains this node address by the subsystem internal network, and then by network accident information is transferred to other subsystems;
C, each subsystem that receives accident information send to relevant each node with the controlling alarm command signal;
D, each node that receives controlling alarm instruction make corresponding warning device send alerting signal by relay switch.
2, according to the instant method for early warning of the described expressway safety of claim 1, it is characterized in that:
---the described instant early warning system master-slave systems that the above subsystem of at least one main frame and two is formed of serving as reasons connect by network between described main frame and each subsystem;
---among the described step B, after the node signal switch in certain subsystem is received trouble-signal, this node sends the accident information that contains this node address by the subsystem internal network, and then pass through network, information is passed to main frame, after then the main frame in the primary and secondary structure receives the information of relevant accident, command information is sent to other each subsystems by network.
3, according to the instant method for early warning of the described expressway safety of claim 1, it is characterized in that: the distributed parallel system of described instant early warning system for forming by two above subsystems.
4, according to claim 2 or the instant method for early warning of 3 described expressway safeties, it is characterized in that: the network of described network for constituting with the twisted-pair feeder interconnection.
5. instant early warning system of expressway safety is characterized in that:
---form by two above subsystems, connect by network between described each subsystem;
---each subsystem has all contained the single chip machine controlling circuit of organization and administration effect, and comprises at least two nodes, connects by the subsystem internal network between each node;
---each node contains the warning device of signaling switch and relay switch control, the signal input part of described single chip machine controlling circuit connects signaling switch, the control signal output ends of described single chip machine controlling circuit is succeeded electric switch, described single chip machine controlling circuit communication terminal network;
---the signaling switch of each node and the warning device of relay switch control distribute in freeway guardrail one side along the line by the address number order in each subsystem;
---described network is a public telephone network; Described subsystem mainly is made up of telephone signal transmitting-receiving node, control circuit node and indicating circuit and repeater; Described control circuit node and indicating circuit are connected in parallel on the bus, are connected in series with the telephone signal transmitting-receiving node; Described repeater adopts dtmf signal transmission trunking device; Described telephone signal transmitting-receiving node is made up of telephone signal transceiver, control circuit and total transceiver of being connected the internal control node; Described control circuit node is made up of the control circuit on control circuit transceiver, the node and keyswitch, relay switch; Described indicating circuit is made up of signal receiver, indicating circuit and alarm device;
And
---described system under normal circumstances is in the early warning monitoring state;
---described subsystem is in order to after wherein a node signal switch is received trouble-signal, and correspondent control circuits is sent the accident information that contains this node address by the subsystem internal network, and then by network accident information is transferred to other subsystems;
---described each subsystem sends to relevant each node in order to after receiving accident information with the controlling alarm command signal;
---described warning device receives the controlling alarm instruction in order to execution, makes the control of each node by relay switch, sends alerting signal.
6, according to the instant early warning system of the described expressway safety of claim 5, it is characterized in that: all on bus, link to each other with display screen in each subsystem, also be connected to described indicating circuit between the indicator board at switchboard telephone control circuit and center simultaneously with receiver, indicating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031133282A CN100341036C (en) | 2003-04-29 | 2003-04-29 | Safety early warning method and system for super highway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031133282A CN100341036C (en) | 2003-04-29 | 2003-04-29 | Safety early warning method and system for super highway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1462986A CN1462986A (en) | 2003-12-24 |
| CN100341036C true CN100341036C (en) | 2007-10-03 |
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| CN101465059B (en) * | 2008-12-31 | 2010-06-09 | 公安部交通管理科学研究所 | Early-warning system for inspecting and judging urban road traffic safety situation |
| CN101777267B (en) * | 2009-01-14 | 2013-08-21 | 李吉 | Method for avoiding rear-end collision on the expressway in foggy weather |
| CN102760364A (en) * | 2012-07-30 | 2012-10-31 | 廖振勤 | Signal alarm (automatic control/manual control operation) extension and amplification system for preventing vehicle rear-end collision |
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| CN106408897A (en) * | 2016-10-31 | 2017-02-15 | 江苏金米智能科技有限责任公司 | High-speed road intelligent alarm system |
| CN106408896A (en) * | 2016-10-31 | 2017-02-15 | 江苏金米智能科技有限责任公司 | Highway alarm device |
| CN106448095A (en) * | 2016-10-31 | 2017-02-22 | 江苏金米智能科技有限责任公司 | Expressway alarm method |
| CN106408898A (en) * | 2016-10-31 | 2017-02-15 | 江苏金米智能科技有限责任公司 | Highway intelligent alarming method |
| CN107134174B (en) * | 2017-04-26 | 2021-01-22 | 安阳全丰航空植保科技股份有限公司 | Agricultural unmanned aerial vehicle safety guarantee system that gives medicine to poor free of charge |
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| CN1462986A (en) | 2003-12-24 |
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