CN203502583U - Transformer substation multi-target accurate positioning system - Google Patents
Transformer substation multi-target accurate positioning system Download PDFInfo
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Abstract
The utility model relates to a transformer substation multi-target accurate positioning system comprising an intelligent positioning terminal, a sound positioning beacon node, and a wireless data transmission base station. The intelligent positioning terminal can be used for the time synchronization with the sound positioning beacon node after being cooperated with the sound positioning beacon node, and then a supersonic wave positioning signal can be sent. The sound positioning beacon node and the intelligent positioning terminal are cooperated with each other, and then the synchronization between the sound positioning beacon node and the intelligent positioning terminal can be realized, and therefore the supersonic wave signal sent by the intelligent positioning terminal can be decoded to acquire the positioning information, and the positioning information can be transmitted to the wireless data transmission base station. The wireless data transmission base station can be used to acquire the position coordinate of the operator wearing the intelligent positioning terminal after processing the positioning information transmitted by the sound positioning beacon node. The transformer substation multi-target accurate positioning system can be used for the positioning of the on-site devices in the transformer substation, the identification and the dynamic positioning of the operator, and therefore the operation of the operator obeying the prescribed procedure can be guaranteed, and the foundation of giving alarms about the overrange operation, the overtime operation, the operation with the wrong targets, or the operation violating the rules or breaking the safety measures can be provided.
Description
Technical field
The utility model relates to a kind of positioning system, and especially a kind of transformer station multiple goal Precise Position System belongs to the technical field that transformer station locates.
Background technology
Safety in production is the basis of electric power enterprise work in every, and along with the development of electrical network, the quantity of transformer station increases day by day, and safety in production guarantees that power grid operation seems particularly important.Power transformation O&M is being born the important process such as operation management, grid switching operation and accident treatment of transformer station in electric system, is the executor who guarantees power grid security, stable and economical operation, and safe pressure increases gradually.For strengthening the safety management of power transformation O&M, prevention substation safety accident, many companies, tissue, group are all practically applicable to the safety protection technique at power transformation O&M scene in active research, make every effort to guarantee power transformation O&M operation field controlled, can control, control.
According to practical operation situation, the dangerous matter sources of controlling in operation practice activity is to set up the key of site safety protection.At present, the O&M of some transformer stations is by video monitoring, RFID(Radio Frequency IDentification), the technology such as remote scheduling, realize site safety production management.Wherein show more use Video Supervision Technique remote monitoring and administration means, control field staff's duty.But, in actual application, because video monitoring equipment installation is relatively fixing, leaving and observe dead angle, security protection is not high with monitoring actual effect.The RFID label that RFID carries by operating personnel and rfid interrogator cooperating, whether monitor staff is in a certain region, and its zone of action is narrow and small, identifying needs personnel to cooperate with on one's own initiative, can not realize automatic real-time monitoring.Remote scheduling refers to that operating personnel, in away from implement pulpit, operates implement by operating computer, has guaranteed operating personnel's personal safety.Technique can not cover all equipment operating operations, and some equipment operating operation also needs to have at the scene operating personnel to take action on one's own.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of transformer station multiple goal Precise Position System is provided, in Qi Nengdui transformer station, field apparatus positions, operating personnel are identified and Kinematic Positioning, guarantee that operating personnel operate in accordance with regulations, to super scope, overtime, operand mistake or the violation operation that destroys safety practice, provide alarm criteria, safe and reliable.
The technical scheme providing according to the utility model, a kind of transformer station multiple goal Precise Position System, described positioning system comprises intelligent locating terminal, acoustic fix ranging beaconing nodes and Wireless Data Transmission base station, wherein:
Intelligence locating terminal, be worn on it operating personnel, after receiving the time synchronizing signal sending Wireless Data Transmission base station, can to acoustic fix ranging beaconing nodes, carry out time synchronized with after acoustic fix ranging beaconing nodes coordinates, after time synchronized completes, send ultrasound wave positioning signal;
Acoustic fix ranging beaconing nodes, is fixed in setting space and has particular location coordinate, can transmit the time synchronizing signal of base-station transmission and the ultrasound wave positioning signal that intelligent locating terminal sends by receiving radio data; After receiving time synchronizing signal, by coordinating laggard line time to synchronize with intelligent locating terminal, the ultrasonic signal that can send intelligent locating terminal decodes to obtain locating information, and locating information is transferred to Wireless Data Transmission base station;
Wireless Data Transmission base station, is installed in setting space, obtains wearing the operating personnel's of intelligent locating terminal position coordinates according to the locating information of acoustic fix ranging beaconing nodes transmission after processing.
Described Wireless Data Transmission base station is connected with background monitoring server, Wireless Data Transmission base station transfers to the position coordinates of wearing the operating personnel of intelligent locating terminal in background monitoring server, to form operating personnel's motion track in background monitoring server, follows the tracks of.
Described acoustic fix ranging beaconing nodes transfers to Wireless Data Transmission base station by Ethernet by locating information.
Described intelligent locating terminal comprises terminal handler, the output terminal of described terminal handler is connected with loudspeaker by audio frequency DAC circuit, power amplifier, the input end of terminal handler is connected with terminal Temperature Humidity Sensor, and terminal handler is also connected with terminal wireless communication module.
Described acoustic fix ranging beaconing nodes comprises modal processor, the input end of modal processor is connected with MEMS microphone by sound wave receiving circuit, modal processor is also connected with node wireless communication module and node ethernet module, and the input end of modal processor is also connected with node Temperature Humidity Sensor.
Described Wireless Data Transmission base station comprises base station processor, and described base station processor is connected with base station radio communication module and base station ethernet module respectively.
Advantage of the present utility model: the ultrasonic signal that intelligent locating terminal sends adopts ultrasound wave spread spectrum coding, under equal-wattage output, ultrasound signal transmission distance promotes at double, it is random code that intelligence arranges in locating terminal different, acoustic fix ranging beaconing nodes can be identified the ultrasound wave positioning signal that a plurality of intelligent locating terminals send simultaneously, and there is higher real-time simultaneously, cycle positioning time is extremely short, can effectively resist the multipath effect causing due to the reflection of buildings and other solids, can effectively resist the Doppler effect that target produces in moving process, there is higher reliability and positioning precision.Wireless time simultaneous techniques between Wireless Data Transmission base station, acoustic fix ranging beaconing nodes and intelligent locating terminal has that the wireless bandwidth of taking is few, precision is high, reach is wide, its number of nodes is unrestricted, in Neng Dui transformer station, field apparatus positions, operating personnel are identified and Kinematic Positioning, guarantee that operating personnel operate in accordance with regulations, to super scope, overtime, operand mistake or the violation operation that destroys safety practice, provide alarm criteria, safe and reliable.
Accompanying drawing explanation
Fig. 1 is use view of the present utility model.
Fig. 2 is that the utility model utilizes trilateration to carry out the structural representation of position calculation.
Fig. 3 is the schematic diagram that the utility model acoustic fix ranging beaconing nodes is distinguished different intelligent locating terminal.
Fig. 4 is the schematic diagram that the utility model carries out time synchronized.
Fig. 5 is connection diagram of the present utility model.
Fig. 6 is the structured flowchart of the utility model acoustic fix ranging beaconing nodes.
Fig. 7 is the circuit theory diagrams that in the utility model acoustic fix ranging beaconing nodes, MEMS microphone is connected with modal processor.
Fig. 8 is the workflow diagram of the utility model acoustic fix ranging beaconing nodes.
Fig. 9 is the structured flowchart of the utility model intelligence locating terminal.
Figure 10 is the structured flowchart of the utility model Wireless Data Transmission base station.
Description of reference numerals: 1-transformer station, 2-transformation chamber, 3-Wireless Data Transmission base station, 4-acoustic fix ranging beaconing nodes, 5-base station connector, 6-background monitoring server, 7-intelligence locating terminal, 8-modal processor, 9-node power, 10-MEMS microphone, 11-sound wave receiving circuit, 12-node wireless communication module, 13-node interface circuit, 14-node Temperature Humidity Sensor, 15-node ethernet module, 16-terminal handler, 17-lithium battery, 18-power supervisor, 19-terminal Temperature Humidity Sensor, 20-terminal interface circuit, 21 terminal wireless communication modules, 22-audio frequency DAC circuit, 23-power amplifier, 24-loudspeaker, 25-base station processor, 26-base station power, 27-base station radio communication module, 28-base station communication interface circuit, 29-base station ethernet module and 30-analog to digital conversion circuit.
Embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in Figure 1: for field apparatus in Neng Dui transformer station positions, operating personnel are identified and Kinematic Positioning, guarantee that operating personnel operate in accordance with regulations, to super scope, overtime, operand mistake or the violation operation that destroys safety practice, provide alarm criteria, positioning system described in the utility model comprises intelligent locating terminal 7, acoustic fix ranging beaconing nodes 4 and Wireless Data Transmission base station 3, wherein:
Acoustic fix ranging beaconing nodes 4, is fixed in setting space and has particular location coordinate, can transmit the time synchronizing signal of base station 3 transmission and the ultrasound wave positioning signal that intelligent locating terminal 7 sends by receiving radio data; After receiving time synchronizing signal, by coordinating laggard line time to synchronize with intelligent locating terminal 7, the ultrasonic signal that can send intelligent locating terminal 7 decodes to obtain locating information, and locating information is transferred to Wireless Data Transmission base station 3;
Wireless Data Transmission base station 3, is installed in setting space, obtains wearing the operating personnel's of intelligent locating terminal 7 position coordinates according to the locating information of acoustic fix ranging beaconing nodes 4 transmission after processing.
Particularly, intelligence locating terminal 7, acoustic fix ranging beaconing nodes 4 and Wireless Data Transmission base station 3 are all positioned at the transformation chamber 2 of transformer station 1, the interior one or more transformation chamber 2 that arranges of transformer station 1, acoustic fix ranging beaconing nodes 4 is fixed on guarded region metope or ceiling dispersedly, Wireless Data Transmission base station 3 is arranged on the porch of transformation chamber 2, intelligence locating terminal 7 is worn on it the operating personnel who enters transformation chamber 2, in the utility model embodiment, a transformation chamber 2 is a guarded region, the interior structure that three transformation chambers 2 are set of transformer station 1 has been shown in Fig. 1, interior Wireless Data Transmission base station 3 and the acoustic fix ranging beaconing nodes 4 of all arranging in each transformation chamber 2, usually, at least four acoustic fix ranging beaconing nodes 4 of an interior setting in transformation chamber 2, acoustic fix ranging beaconing nodes 4 has own fixing position coordinates after installing.
The ultrasound wave positioning signal that described intelligent locating terminal 7 sends is for adopting the ultrasonic signal of ultrasound wave spread spectrum coding technology, and the frequency range of superaudio positioning signal is 20K～25KHz.In the utility model embodiment, adopted ultrasound wave spread spectrum coding technology, ultrasound wave spread spectrum coding utilization pseudo random noise vocoding technique combine with orthogonal spectrum expansion coding techniques, use 20K～25K ultrasonic frequency section, can expand ultrasonic propagation distance, reduce acoustic fix ranging beaconing nodes and lay number, make system have more availability, ultrasound wave positioning signal has been used to pseudo random noise vocoding technique, principle sends one group of burst pulse continuously for using, total length of time elongates, and pulse group gross energy is increased, thereby orientation distance promotes at double.
In order to realize multiple goal separating capacity, be the pseudo noise coded system that has adopted auto-correlation, their cross correlation excellence, code phase alignment, restores broad pulse, and code phase does not line up, and has to noise.Utilize after pseudorandomcode, the benefit that can simultaneously retain burst pulse and broad pulse location, and its cross correlation superiority, can guarantee good multi-Objective Orthogonal, realizing multiple goal code sequence distinguishes, and by different intelligent locating terminal 7 is distributed to different pseudo-random codes, between these pseudo-random codes are mutual, have good cross correlation, thereby acoustic fix ranging beaconing nodes 4 can be distinguished corresponding intelligent locating terminal 7 according to different pseudo-random codes.Multiple goal code sequence is distinguished simultaneously, can realize multiple goal send simultaneously localization by ultrasonic signal its mutually between signal interference-free, without avoiding the peak hour, effectively reduce the multiple goal required overall time of location in time, guarantee that system real time is not subject to the impact of destination number.In the utility model embodiment, multiple goal refers in guarded region, to have a plurality of intelligent locating terminals 7, and can position a plurality of intelligent locating terminals 7 simultaneously.
In order to improve positioning precision and the reliability of system, utilize the orthogonality of coding, multipath signal can be divided, consider that direct projection footpath signal arrives at first, therefore choose the component of signal arriving at first, abandon other components, solve ultrasound wave in the indoor multipath effect causing due to object reflection.Because the target of locating is the personnel that can move freely, its ultrasound wave positioning signal in moving process can produce Doppler effect, makes signal frequency shift.The problem of bringing for solving Doppler effect, before ultrasound wave spread spectrum coded signal, first launch the ultrasonic signal of fixed frequency, so that acoustic fix ranging beaconing nodes estimates Doppler shift, carry out frequency compensation, revise motive objects and know from experience the Doppler effect that causes ultrasonic signal.
When after to the decoding of acoustic fix ranging beaconing nodes 4 transmission, information is processed in described Wireless Data Transmission base station 3, Wireless Data Transmission base station 3 needs to receive the locating information that is not less than 4 transmission of four acoustic fix ranging beaconing nodes, described locating information comprises that ultrasound wave positioning signal arrives the time of acoustic fix ranging beaconing nodes 4, Wireless Data Transmission base station 3 is calculated at one time under benchmark intelligent locating terminal 7 and is sent ultrasound wave positioning signal and arrive the mistiming between different acoustic fix ranging beaconing nodes 4, utilize trilateration to obtain wearing the operating personnel's of intelligent locating terminal 7 position coordinates.
Particularly, as shown in Figure 2, intelligence locating terminal 7 sends the ultrasound wave positioning signal through pseudorandomcode, if it is known to be not less than four these node location coordinates of acoustic fix ranging beaconing nodes 4() receive ultrasonic signal, Wireless Data Transmission base station 3 is by calculating at one time under benchmark, time of arrival between the ultrasound wave positioning signal that intelligence locating terminal 7 sends is mutual to each acoustic fix ranging beaconing nodes 4 is poor, can extrapolate the distance of 4 of intelligent locating terminal 7 and at least three acoustic fix ranging beaconing nodes, recycling trilateration ratio juris, can calculate the position of intelligent locating terminal, thereby realize pinpoint function.As shown below:
M1, M2, M3, M4 are acoustic fix ranging beaconing nodes 4, and its coordinate is M1(X
m1, Y
m1), M2(X
m2, Y
m2), M3(X
m3, Y
m3), M4(X
m4, Y
m4), P is the operating personnel who wears intelligent locating terminal 7, its coordinate is P(X
p, Y
p), d
1, d
2, d
3, d
4for a P is to M1, M2, M3, the distance of M4, m
2, m
3, m
4be respectively d
2-d
1, d
3-d
1, d
4-d
1distance difference, its formula is:
Wherein, m
2, m
3, m
4can obtain by ultrasound wave positioning signal arrival M1 acoustic fix ranging beaconing nodes 4, M2 acoustic fix ranging beaconing nodes 4, M3 acoustic fix ranging beaconing nodes 4,4 mistimings time of M4 acoustic fix ranging beaconing nodes, solve above-mentioned ternary quadratic equation group, just can obtain the coordinate P(X of operating personnel P
p, Y
p), can realize wearing the determining of operating personnel's position coordinates of intelligent locating terminal 7.
In the utility model embodiment, multiple goal separating capacity is to distribute different pseudo-random code CODE (i) by the intelligent locating terminal 7 to different, i refers to the numbering of intelligent locating terminal 7, between these pseudo-random codes are mutual, have good cross correlation, thereby acoustic fix ranging beaconing nodes 4 can be distinguished respective objects according to different pseudo-random codes.As shown in Figure 3:
During concrete enforcement, to 7 establishments of four intelligent locating terminals different be random number, by loudspeaker 24, send encoded ultrasound wave positioning signal afterwards, at acoustic fix ranging beaconing nodes 4, receive the ultrasound wave positioning signal that one～No. tetra-intelligent locating terminal 7 sends, and decode and by different recognition of PN code, go out the numbering of each intelligent locating terminal 7, by mark information time of arrival, the data of the numbering of the numbering harmony localizer beacon node 4 of intelligence locating terminal 7 are transferred to Wireless Data Transmission base station 3 by Ethernet, by Wireless Data Transmission base station 3, calculated the positional information of the intelligent locating terminal 7 of numbering one～numbering four.
In order to improve positioning precision, the time synchronized of acoustic fix ranging beaconing nodes 4 is carried out in Wireless Data Transmission base station 4 by less radio-frequency, the time between the synchronous acoustic fix ranging beaconing nodes 4 of short-distance wireless radiofrequency signal (being time synchronizing signal) is sent in wireless transmission base station 3, guarantee between acoustic fix ranging beaconing nodes 4 that time error is in 5 μ s, implementation procedure is: Wireless Data Transmission base station 3 is sent and in time synchronizing signal, comprised system time T, intelligence locating terminal 7 is with acoustic fix ranging beaconing nodes 4 respectively at T3, and T2 is time of receipt (T of R) synchronizing signal constantly.Intelligence locating terminal 7, through certain hours, sends response packet constantly at T4, in the response packet that intelligent locating terminal 7 sends, comprises time interval Ts, Ts=T4-T3 wherein, and near acoustic fix ranging beaconing nodes 4 is received response packet at T5.T is the inside absolute time of wireless data base station 3, it is length of a game, T2 is the inside absolute time of acoustic fix ranging beaconing nodes 4, and T3 is the inside absolute time of intelligent locating terminal 7, the inside absolute time of T4 intelligence locating terminal 7, Ts is the mistiming of T4-T3, T5 is the inner absolute time of acoustic fix ranging beaconing nodes 4, and Tr is the inner absolute time of acoustic fix ranging beaconing nodes 4, and (Tr and T1 are same points in physical time, just object of reference is different), obtain
Tr=2*T2-T5+Ts, TrWei T1 length of a game is at 4 relative times of acoustic fix ranging beacon joint, its sequential is as shown in Figure 4: by above-mentioned time synchronization process, can mask the error that radio frequency chip is introduced in transmitting-receiving process, partial data bag transmission delay error, can reach with few signal bandwidth occupation rate the time synchronized of a large amount of beaconing nodes.Practical work process is as follows: acoustic fix ranging beaconing nodes 4 is received ultrasound wave positioning signal constantly at Tc, Tc is the inner absolute time of acoustic fix ranging beaconing nodes 4, need to convert the Ta:Ta=Tc – T2+Tr of length of a game to, Ta is the length of a game that acoustic fix ranging beaconing nodes 4 receives ultrasound wave positioning signal.
Further, described intelligent locating terminal 7 is measured the terminal environments humiture value of described intelligent locating terminal 7 environment of living in, and described terminal environments humiture value is transferred to acoustic fix ranging beaconing nodes 4 by ultrasound wave positioning signal; Acoustic fix ranging beaconing nodes 4 is measured the node cycle environmental temperature and humidity value of described acoustic fix ranging beaconing nodes 4 environment of living in simultaneously, acoustic fix ranging beaconing nodes 4 all transfers to Wireless Data Transmission base station 3 by decoded terminal environments humiture value and node cycle environmental temperature and humidity value, and 3 pairs of Wireless Data Transmission base stations terminal environments humiture value and node cycle environmental temperature and humidity value are carried out temperature and humidity compensation to locating information after processing.
In the utility model embodiment, the processing of 3 pairs of Wireless Data Transmission base stations terminal environments humiture and node cycle environmental temperature and humidity value comprises averages to terminal environments humiture, node cycle environmental temperature and humidity, mean value by the humiture value that obtains is revised ultrasound wave in the velocity of propagation of guarded region, with the elements of a fix error of calculation that reduces to be caused by sound propagation velocity error, improve the precision of calculating.
In the utility model embodiment, Wireless Data Transmission base station 3 utilizes the mean value of humiture value to revise ultrasound wave in the velocity of propagation of guarded region, is specially:
Wherein, v is the ultrasonic propagation velocity that intelligent locating terminal 7 arrives under the actual temperature of acoustic fix ranging beaconing nodes 4, and t is average indoor temperature, t=(t
z+ t
j) 2, t
zfor the temperature value that intelligent locating terminal 7 is measured, t
jfor the temperature value that acoustic fix ranging beaconing nodes 4 is measured, v
0for the ultrasonic propagation velocity in gas 0 ℃ time, thermodynamic temperature value when T0 is 0 ℃, p is standard atmospheric pressure, the saturated vapour pressure of air during ps room temperature, r relative humidity, r=(r
z+ r
j) 2, r
zfor the humidity value that intelligent locating terminal 7 is measured, r
jfor the humidity value of acoustic fix ranging beaconing nodes 4 measurements, thereby obtain being modified to apart from difference:
m
2=v
pm2(T
m2-T
m1)；
m
3=v
pm3(T
m3-T
m1)；
m
4=v
pm4(T
m4-T
m1)；
Wherein, v
pm2for the real velocity of sound of intelligent locating terminal 7 to M2 acoustic fix ranging signal node 7, v
pm3for the real velocity of sound of intelligent locating terminal 4 to M3 acoustic fix ranging beaconing nodes 4, v
pm4for the real velocity of sound of intelligent locating terminal 7 to M4 acoustic fix ranging beaconing nodes 4, T
m1, T
m2, T
m3, T
m4be respectively the absolute moment of ultrasonic signal arrival M1 acoustic fix ranging node 4, M2 acoustic fix ranging beaconing nodes 4, M3 acoustic fix ranging beaconing nodes 4, M4 acoustic fix ranging beaconing nodes 4.
Described Wireless Data Transmission base station 3 is connected with background monitoring server 6, Wireless Data Transmission base station 3 transfers to the position coordinates of wearing the operating personnel of intelligent locating terminal 7 in background monitoring server 6, to follow the tracks of at the interior formation of background monitoring server 6 operating personnel motion track.Background monitoring server 6 connects Wireless Data Transmission base station 3 by base station connector 5, and base station connector 5 can adopt the matching units such as signal picker or hub.Background monitoring server 6 is according to the elements of a fix information of Wireless Data Transmission base station 3 feedbacks, can whether have super scope, overtime, operand mistake or destroy the violation operation behaviours such as safety practice operating personnel provides alarm foundation, and operating personnel is to security in operation in assurance.
As shown in Figure 9: described intelligent locating terminal 7 comprises terminal handler 16, the output terminal of described terminal handler 16 is connected with loudspeaker 24 by audio frequency DAC circuit 22, power amplifier 23, the input end of terminal handler 16 is connected with terminal Temperature Humidity Sensor 19, and terminal handler 16 is also connected with terminal wireless communication module 21.
Particularly, terminal handler 16 can adopt conventional micro-chip processor, as single-chip microcomputer etc., terminal handler 16 sends the signal after coding by audio frequency DAC circuit 22, power amplifier 23 and loudspeaker 24 with ultrasound wave form, in terminal handler 16, set in advance numbering, to allow acoustic fix ranging beaconing nodes 4 carry out Division identification.Terminal Temperature Humidity Sensor 19 is transferred to the humiture value of collection in terminal handler 16, terminal wireless communication module 21 for and the wireless connections of 3 of Wireless Data Transmission base stations, terminal wireless communication module 21 can mate and be connected with base station radio communication module 27, terminal wireless communication module 21 can adopt the wireless forms of communication of 2.4GHz, the power end of terminal handler 16 is connected with lithium battery 17 by power supervisor 18, by lithium battery 17, can power to whole intelligent locating terminal 7, power supervisor 18 can manage the duty of lithium battery 17.Terminal handler 16 is also connected with terminal interface circuit 20, and terminal interface circuit 20 can adopt USB or RS232 interface shape.
Each intelligent locating terminal 7 is equipped with fixedly pseudorandomcode number, whenever receiving the wireless time synchronizing signal that Wireless Data Transmission base station 3 sends, carry out after time synchronized, one-tenth ultrasound wave positioning signal code stream prepared in advance is sent in audio frequency DAC circuit 22, audio frequency DAC circuit 22 converts digital code stream to simulating signal, by power amplifier 23, coded signal is amplified, loudspeaker 24 converts the simulating signal through amplifying to acoustic signals and propagates in air.
As shown in Figure 6: described acoustic fix ranging beaconing nodes 4 comprises modal processor 8, the input end of modal processor 8 is connected with MEMS microphone 10 by sound wave receiving circuit 11, modal processor 8 is also connected with node wireless communication module 12 and node ethernet module 15, and the input end of modal processor 8 is also connected with node Temperature Humidity Sensor 14.
Particularly, modal processor 8 also can adopt conventional micro-chip processor, modal processor 8 is by the wireless connections between node wireless communication module 12 and Wireless Data Transmission base station 3, to realize required time synchronized, acoustic fix ranging beaconing nodes 4 is connected by realizing Ethernet between node ethernet module 15 and Wireless Data Transmission base station 3, and acoustic fix ranging beaconing nodes 4 is transferred to decoded ultrasound wave locating information and all humiture values in Wireless Data Transmission base station 3 by Ethernet.The power end of modal processor 8 is connected with node power 9, and modal processor 8 is also connected with node interface circuit 13, and described node interface circuit 13 comprises USB(Universal Serial Bus) or RS232 interface.Modal processor 8 is by MEMS(Micro-Electro-Mechanic System) microphone 10 receives the ultrasound wave positioning signal that intelligent locating terminal 7 sends, ultrasound wave positioning signal transfers in modal processor 8 after processing by sound wave receiving circuit 11, by 8 pairs of ultrasound wave positioning signals of modal processor, is decoded.
As shown in Figure 7: described sound wave receiving circuit 11 comprises operational amplifier U1, an input end of operational amplifier U1 is connected with one end of one end of the first capacitor C 1 and the 4th resistance R 4, one end of the other end of the first capacitor C 1 and the first resistance R 1, one end of one end of the second resistance R 2 and the second capacitor C 2 connects, the other end of the first resistance R 1 is connected with MEMS microphone 10, the other end ground connection of the second resistance R 2, the other end of the second capacitor C 2 is connected with the output terminal of operational amplifier U1, the other end of the 4th resistance R 4 is connected with modal processor 8 by analog to digital conversion circuit 30, another input end of operational amplifier U1 is by the 3rd resistance R 3 ground connection.
As shown in Figure 8: the ultrasound wave positioning signal that MEMS microphone 10 receives in space, through sound wave receiving circuit 11, convert thereof into simulating signal amount, band information beyond filtering ultrasonic signal, by analog to digital conversion circuit 30, sample, convert simulating signal to numerical data, enter in modal processor 8.
First modal processor 8 carries out down-converted to signal, obtains data E, to reduce data operation quantity, accelerates data processing speed afterwards.Carry out afterwards discrete Fourier and calculate corresponding frequency domain data F, data are only retained near valid data supersonic range, other frequency range data abandon and obtain G.G and random code CODE (i) frequency domain data are multiplied each other to resolve obtains corresponding data H, the more anti-Fourier that falls apart of data H is calculated to K.The K data difference method of averaging is obtained in K data, whether have obvious peak value, if any recording the time T of peak value and by the time T of the call number i of CODE (1), peak value and Temperature Humidity Sensor pair and air measured value F, being uploaded to Wireless Data Transmission base station 3 by Ethernet.As without again selecting other random code CODE (i) to mate, until find coupling.
As shown in figure 10: described Wireless Data Transmission base station 3 comprises base station processor 25, described base station processor 25 is connected with base station radio communication module 27 and base station ethernet module 29 respectively.
As shown in Figure 1 and Figure 5: operating personnel wears intelligent locating terminal 7 and starts described intelligent locating terminal 7 before entering guarded region, the time synchronizing signal of 7 monitoring wireless data transmission base station 3 transmission all the time of intelligent locating terminal.When entering 3 wireless telecommunications overlay area, Wireless Data Transmission base station, intelligence locating terminal 7 is received the time synchronizing signal that send at 3 intervals, Wireless Data Transmission base station, and carry out time synchronized with acoustic fix ranging beaconing nodes 4, after setting-up time, send ultrasound wave positioning signal, in the utility model embodiment, in ultrasound wave positioning signal, comprised the terminal environments humiture value of measuring intelligent locating terminal 7 place environment.The acoustic fix ranging beaconing nodes 4 being arranged in transformer room 2 is received ultrasound wave positioning signal, by the decoding of ultrasound wave positioning signal, sends to Wireless Data Transmission base station 3 process by Ethernet.Wireless Data Transmission base station 3 receives the data of each acoustic fix ranging beaconing nodes 4 transmission, by calculating ultrasonic signal, arrive the mistiming of different acoustic fix ranging beaconing nodes 4, utilize trilateration to calculate the position coordinates of intelligent locating terminal 7, calculate the indoor location coordinate of intelligent locating terminal 7, and follow the tracks of and wear intelligent locating terminal target person motion track by Adaptive Signal Processing.Background monitoring server 6 judges that for operating personnel's position coordinates whether it is in the position of safety, and gives alarm prompt.
The ultrasonic signal that the utility model intelligence locating terminal 7 sends adopts ultrasound wave spread spectrum coding, under equal-wattage output, ultrasound signal transmission distance promotes at double, intelligence locating terminal 7 is interior, and to arrange different be random code, acoustic fix ranging beaconing nodes 4 can be identified the ultrasound wave positioning signal that a plurality of intelligent locating terminals 7 send simultaneously, and there is higher real-time simultaneously, cycle positioning time is extremely short, can effectively resist the multipath effect causing due to the reflection of buildings and other solids, can effectively resist the Doppler effect that target produces in moving process, there is higher reliability and positioning precision.The wireless time simultaneous techniques that Wireless Data Transmission base station 3, acoustic fix ranging beaconing nodes 4 and intelligent locating terminal are 7 has that the wireless bandwidth of taking is few, precision is high, reach is wide, its number of nodes is unrestricted, in Neng Dui transformer station, field apparatus positions, operating personnel are identified and Kinematic Positioning, guarantee that operating personnel operate in accordance with regulations, to super scope, overtime, operand mistake or the violation operation that destroys safety practice, provide alarm criteria, safe and reliable.
Claims (6)
1.Yi Zhong transformer station multiple goal Precise Position System, is characterized in that, described positioning system comprises intelligent locating terminal (7), acoustic fix ranging beaconing nodes (4) and Wireless Data Transmission base station (3), wherein:
Intelligence locating terminal (7), be worn on it operating personnel, after receiving the time synchronizing signal sending Wireless Data Transmission base station (3), can to acoustic fix ranging beaconing nodes (4), carry out time synchronized with after acoustic fix ranging beaconing nodes (4) coordinate, after time synchronized completes, send ultrasound wave positioning signal;
Acoustic fix ranging beaconing nodes (4), is fixed in setting space and has particular location coordinate, can transmit the time synchronizing signal of base station (3) transmission and the ultrasound wave positioning signal that intelligent locating terminal (7) sends by receiving radio data; After receiving time synchronizing signal, by coordinating laggard line time to synchronize with intelligent locating terminal (7), the ultrasonic signal that can send intelligent locating terminal (7) decodes to obtain locating information, and locating information is transferred to Wireless Data Transmission base station (3);
Wireless Data Transmission base station (3), is installed in setting space, obtains wearing the operating personnel's of intelligent locating terminal (7) position coordinates according to the locating information of acoustic fix ranging beaconing nodes (4) transmission after processing.
2. transformer station according to claim 1 multiple goal Precise Position System, it is characterized in that: described Wireless Data Transmission base station (3) is connected with background monitoring server (6), Wireless Data Transmission base station (3) transfers to the position coordinates of wearing the operating personnel of intelligent locating terminal (7) in background monitoring server (6), to form operating personnel's motion track in background monitoring server (6), follows the tracks of.
3. transformer station according to claim 1 multiple goal Precise Position System, is characterized in that: described acoustic fix ranging beaconing nodes (4) transfers to Wireless Data Transmission base station (3) by Ethernet by locating information.
4. transformer station according to claim 1 multiple goal Precise Position System, it is characterized in that: described intelligent locating terminal (7) comprises terminal handler (16), the output terminal of described terminal handler (16) is connected with loudspeaker (24) by audio frequency DAC circuit (22), power amplifier (23), the input end of terminal handler (16) is connected with terminal Temperature Humidity Sensor (19), and terminal handler (16) is also connected with terminal wireless communication module (21).
5. transformer station according to claim 1 multiple goal Precise Position System, it is characterized in that: described acoustic fix ranging beaconing nodes (4) comprises modal processor (8), the input end of modal processor (8) is connected with MEMS microphone (10) by sound wave receiving circuit (11), modal processor (8) is also connected with node wireless communication module (12) and node ethernet module (15), and the input end of modal processor (8) is also connected with node Temperature Humidity Sensor (14).
6. transformer station according to claim 1 multiple goal Precise Position System, it is characterized in that: described Wireless Data Transmission base station (3) comprises base station processor (25), described base station processor (25) is connected with base station radio communication module (27) and base station ethernet module (29) respectively.
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| CN201320649787.5U CN203502583U (en) | 2013-10-21 | 2013-10-21 | Transformer substation multi-target accurate positioning system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103592629A (en) * | 2013-10-21 | 2014-02-19 | 国家电网公司 | Transformer substation multi-target accurate positioning system |
| CN105469799A (en) * | 2015-12-01 | 2016-04-06 | 北京科技大学 | Audible sound positioning method and system based on hidden channel |
| CN106093950A (en) * | 2016-06-01 | 2016-11-09 | 努比亚技术有限公司 | Mobile terminal positioner and method |
| CN106908761A (en) * | 2017-03-17 | 2017-06-30 | 深圳东康前海新能源有限公司 | The heliostat field alignment system and localization method of tower photo-thermal power station |
| CN109688221A (en) * | 2018-12-26 | 2019-04-26 | 安徽网华信息科技有限公司 | A kind of interior personnel in substation station and equipment positioning system based on unique identifier |
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2013
- 2013-10-21 CN CN201320649787.5U patent/CN203502583U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592629A (en) * | 2013-10-21 | 2014-02-19 | 国家电网公司 | Transformer substation multi-target accurate positioning system |
| CN103592629B (en) * | 2013-10-21 | 2015-06-17 | 国家电网公司 | Transformer substation multi-target accurate positioning system |
| CN105469799A (en) * | 2015-12-01 | 2016-04-06 | 北京科技大学 | Audible sound positioning method and system based on hidden channel |
| CN106093950A (en) * | 2016-06-01 | 2016-11-09 | 努比亚技术有限公司 | Mobile terminal positioner and method |
| CN106093950B (en) * | 2016-06-01 | 2020-03-27 | 努比亚技术有限公司 | Mobile terminal positioning device and method |
| CN106908761A (en) * | 2017-03-17 | 2017-06-30 | 深圳东康前海新能源有限公司 | The heliostat field alignment system and localization method of tower photo-thermal power station |
| CN109688221A (en) * | 2018-12-26 | 2019-04-26 | 安徽网华信息科技有限公司 | A kind of interior personnel in substation station and equipment positioning system based on unique identifier |
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