CN202250234U

CN202250234U - Passive post-disaster downhole information acquisition system with positioning capability

Info

Publication number: CN202250234U
Application number: CN2011203417761U
Authority: CN
Inventors: 代剑华
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-09-13
Filing date: 2011-09-13
Publication date: 2012-05-30
Anticipated expiration: 2021-09-13

Abstract

The utility model provides a passive post-disaster downhole information acquisition system with positioning capability. The passive post-disaster downhole information acquisition system with the positioning capability comprises optical cables and a detector which are connected together, wherein the optical cables are laid along a downhole tunnel. According to the utility model, distributed sensing optical cables are laid in a mine tunnel, and an optical cable knocking rule is formulated in advance, so that post-disaster survival personnel can knock the optical cables according to the rule so as to send a message for help to the ground, and rescue personnel on the ground can acquire the specific stranded position of the survival personnel; and simultaneously, the system also can be used for recording conditions such as disaster occurrence scopes, places and the like. The system provided by the utility model has the advantages of full distributed seamless detection, accuracy in positioning, complete passive performance, high damage-resisting capability and the like, can be used for providing effective rescue information, and has good complementarity with an existing downhole safety device.

Description

Down-hole information obtains system after having the passive calamity of stationkeeping ability

Technical field

The utility model belongs to areas of information technology, is specifically related to a kind of to the collection of down-hole trapped personnel distress signals after the calamity and the system of trapped personnel location.

Technical background

The colliery mine disaster is the disaster that jeopardizes people's life, how in mine disaster the back to take place effectively and implements rescue, and is significant.Yet at present the back often takes place because communication, blackout can't effectively be worked in mine disaster in systems such as the monitoring in colliery, communication, makes the rescue personnel not know the down-hole concrete condition, thereby can't formulate optimum rescue scheme, and rescue work often blindly.Therefore, how to grasp down-hole situation after the calamity, like disaster occurrence degree and scope, trapped personnel is in what position, and situation such as whether survive is extremely important to implementing rescue.

The utility model content

Down-hole information obtained system after the utility model technical problem to be solved provided a kind of passive calamity.

The technical scheme that the utility model technical solution problem is adopted is: down-hole information obtains system after having the passive calamity of stationkeeping ability, comprises the optical cable and the detecting devices that link together, and said optical cable is laid along underworkings.

The useful benefit of the utility model is: through in mine laneway, laying distributed sensing optical cable; Through prior formulation good knock the optical cable rule; Let and send distress signals earthward after the survival personnel knock optical cable through this rule after the disaster, aboveground rescue personnel will obtain its concrete stranded position.Simultaneously, this system can also write down situation such as scope that disaster takes place, place.This system has full distributed seamless detection, accurate advantages such as location, passive fully, high capability to resist destruction, and effective rescue information can be provided, and has good complementarity with safety device under the existing mine.

Description of drawings

Fig. 1 is the structural representation of the utility model system.

Fig. 2 is the signal graph that trapped personnel evenly knocks optical cable and produced.

Fig. 3 signal graph that to be trapped personnel evenly knock optical cable at interval and produced by certain hour.

Fig. 4 writes down the position of landslide accident generation at the signal graph apart from well head 14km place.

The specific embodiment

As shown in Figure 1; The utility model is that down-hole information obtains system after having the passive calamity of stationkeeping ability; Concrete structure according to the mine down-hole; Optical cable 2 is laid along underworkings 1, and the optical cable 2 and the aboveground detecting devices 3 of down-hole connect and compose the distributed optical fiber sensing system based on coherent light light time territory scattering principle with accurate stationkeeping ability.

When disaster takes place; Survival personnel in down-hole are according to confirming that in advance good rule knocks optical cable 2, after optical cable 2 is experienced the stress that knocks, will by aboveground detecting devices 3 detect and exactly reaction knock process and particular location; Through the rule contrast good with prior formulation; Determine whether that the people knocks or other interference, thereby confirm that this beating position place has personnel to survive, thereby realize suing and labouring.

The system of the utility model also has the another one effect; When accident disasters such as the down-hole caves in, permeable, gas explosion; Optical cable 2 along mine is laid can be experienced signals such as the regional power of disaster, vibrations, sound; Aboveground detecting devices 3 detects the scope that just can confirm that disaster takes place, thus the intensity and the scope of record disaster, for aboveground rescue provides information support.

Above-mentioned detecting devices 3 comprises light source 6, circulator or coupler 7, reception fibre optic interferometer 8, probe 9 and the capture card 10 that connects successively, and this distributed optical fiber sensing system can be based on the sensor-based system of distributed vibration or strain.Above-mentioned light source 6 is input to circulator or coupler 7 with pulsed light; Be driven in the optical cable 2 through circulator or coupler 7 then; Pulsed light is reflected in optical cable 2; Turn back to interference in the reception fibre optic interferometer 8 through circulator or coupler 7 again, two output phase differences that receive fibre optic interferometer 8 are 90 degree or 120 degree.When forces are applied in certain position of optical cable 2, the phase place of its reflected light signal changed, and probe 9 detects through receiving the fluctuation of fibre optic interferometer 8 optical signals; The analog signal conversion that capture card 10 detects probe 9 is a data signal, is input to computing in the computer then, thereby measures the force-bearing situation of optical cable 2; And realize positioning function according to the time order and function of reflected signal; The down-hole optical cable is passive fully, need not power supply, operate as normal still when disaster takes place.

The above-mentioned rule of knocking can be evenly to knock, and also can adopt the non-homogeneous special coded system of knocking such as knock.Stipulate in advance such as us; When disaster took place, the rule that personnel knock optical cable was: evenly knock optical cable continuously 10 times, knock 0.5-1 second blanking time at every turn; Expression is that the survival personnel are sending distress signals; Its resulting signal graph on detecting devices 3 is as shown in Figure 2, also can evenly knock optical cable at interval by certain hour and send an SOS, and its resulting signal graph on detecting devices 3 is as shown in Figure 3.

During practical implementation; Such as when landslide disaster 4 places, position in Fig. 1 take place; Personnel in the position 5 places stranded, this trapped personnel just knocks optical cable 2 and sends warning message, just can learn that through resulting signal on the detecting devices 3 this is the distress signals that the trapped personnel of a survival sends.Based on this system, noted the landslide disaster and occurred in place simultaneously apart from well head 14km, the about 20m of scope, as shown in Figure 4.

The utility model proposes a kind of passive (down-hole need not to supply power), full distributed (seamless), orientable disaster information writes down and the passive optical cable acquisition system of distress signals, can help effectively to rescue after the calamity.The utility model is based on a kind of distributed optical fiber sensing system and is routed to the down-hole, through the distress signals of rules specific to confirm that down-hole trapped personnel sends.Full distributed the referring on the optical cable of the utility model all is sensor a bit arbitrarily.The utility model is realized the record of disaster process and scope through in mine passage, laying distributed sensing optical cable, and the collection of the distress signals that realize trapped personnel is sent out, and rescuing for the calamity post-science provides information support.

Claims

1. down-hole information obtains system after having the passive calamity of stationkeeping ability, it is characterized in that comprise the optical cable (2) and the detecting devices (3) that link together, said optical cable (2) is laid along underworkings (1).

2. down-hole information obtains system after the passive calamity with stationkeeping ability as claimed in claim 1; It is characterized in that said detecting devices (3) comprises light source (6), circulator or coupler (7), reception fibre optic interferometer (8), probe (9) and the capture card (10) that connects successively.