CN104202879A - High and low sensor alternate tracking energy-saving street lamp system and control method thereof - Google Patents
High and low sensor alternate tracking energy-saving street lamp system and control method thereof Download PDFInfo
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Abstract
The invention discloses a high and low sensor alternate tracking energy-saving street lamp system and a control method thereof. The high and low sensor alternate tracking energy-saving street lamp system comprises a plurality of street lamps, a street lamp control module, a wireless communication module, a wireless sensor network, a sensor control module and a central control unit; the plurality of street lamps are arranged on the bilateral sides of the road surface; the wireless sensor network comprises high sensors and low sensors which are arranged below the high sensors. According to the high and low sensor alternate tracking energy-saving street lamp system and the control method thereof, the number of front or rear lighted lamps and the lighting duration are calculated according to the movement speed and the movement direction of a moving target, a lighting data instruction is transferred between the adjacent street lamps, and accordingly the communication distance is reduced, the energy consumption is saved, and the service life of the street lamp system is fully extended due to the fact that the working mode that the high sensors and the low sensors are separated from each other is adopted to form the advantage complementation.
Description
Technical field
The present invention relates to a kind of road lamp system, relate in particular to a kind of high-low-position transducer and alternately follow the tracks of energy-saving streetlamp system, also relate to the control method that a kind of high-low-position transducer is alternately followed the tracks of energy-saving streetlamp system.
Background technology
At present the existing street lamp of China is controlled the bright and intervals of half luminous point that adopt more and the method such as is lighted: the bright scheme of half luminous point is: when road is busy, keep original illumination, when people's car is rare, by manual control, reduce the voltage of electrical network and control the lower brightness of street lamp maintenance, this method has been saved electric energy to a certain extent, but has some defects: (1) luminous flux is not enough; (2) reduction technology is not mature enough, and spread of voltage has affected life-span of light fixture; (3) safety of traffic has been formed to threat.The scheme that light at interval is: when the rare people of car is few in the second half of the night, open a lamp and close a lamp, the major defect of this control mode is: easily cause zebra effect, make part section have light dead band, shortened pedestrian and the driver's that drives the visual field and sighting distance, increased a lot of potential safety hazards.
For solving the problems of the technologies described above, patent of invention < < energy-conservation street lamp brightness on-demand dynamic adjusting system and control method > > that in Chinese patent database, publication number is 101267703, the time value that vehicle/pedestrian detected to the transmission of street control centre by street lamp is calculated the highlighted oil lamp number in direction of motion both sides, by control centre, send highlighted signal instruction to each street lamp, rather than find in time moving target by street lamp oneself, light in time, therefore wherein existing the communication delay causing because of communication mechanism and the lamp bright signal that may be caused by communication failure to send error causes traffic lighting to lag behind, there is traffic safety hidden danger, and can not carry out each street lamp of accurate Calculation highlighted time of delay according to the speed of moving target, directional information, thereby energy efficient to greatest extent.
On the other hand, in existing road lamp system, wireless senser is widely used, wireless sensor network (WSN) is generally comprised of perception unit, control unit, wireless transmit/receive units and Power Management Unit and auxiliary unit, and energy consumption and communication range are one of main confined conditions in wireless sensor network.In each component units, the energy of wireless communication module consumes maximum, the energy consumption of each state of communication module successively: send > and receive the idle > dormancy of >; The energy consumption of processor module and sensor assembly is operating state and is greater than resting state.Therefore, in the situation that processor module work energy consumption is constant, reduce the sending and receiving number of times of wireless communication module, reduce the operating time of sensor assembly, can further save system energy consumption, extend the system works life-span.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provide a kind of high-low-position transducer alternately to follow the tracks of energy-saving streetlamp system, solved road surface in existing road lamp system and had light dead band, energy consumption is large, failure rate is high technical problem.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: high-low-position transducer is alternately followed the tracks of energy-saving streetlamp system, and described road lamp system comprises: the some street lamps that are respectively in both sides, road surface: for road lighting; Street lamp control module: for controlling lighting and extinguishing of street lamp; Wireless sensor network: comprise high position sensor, be arranged on the low sensors of high position sensor below: for gathering the echo signal entering in detection range; Transducer control module: for controlling the operating state of high position sensor, low sensors; Central control unit: for receiving the moving target coherent signal of high position sensor, low sensors transmission, record the continuous access times of transducer, export the data command of lighting a lamp, and send the data command of lighting a lamp to street lamp control module by wireless communication module; Wireless communication module: for the transmission of the data command of lighting a lamp between adjacent street lamp, and the communicating by letter of wireless sensor network and central control unit.
The detection radius of described high position sensor, the detection radius of low sensors are all not less than half of distance between the adjacent street lamp of road homonymy, and are all not less than road width half.
Described road lamp system also comprises monitor terminal and the damage alarming device whether damaging for monitoring sensor.
The classification of selecting of described high position sensor is infrared sensor or ultrasonic sensor, the classification of selecting of described low sensors is also infrared sensor or ultrasonic sensor, and the high position sensor on same street lamp and low sensors are selected transducers different in above-mentioned classification.
Compared with prior art, high-low-position transducer provided by the invention is alternately followed the tracks of the beneficial effect that energy-saving streetlamp system reaches: 1, same street lamp is provided with two transducers that position height is different, one of them breaks down, another still can normally move, and has solved because transducer damages and has caused road surface to have the technical problem in light dead band; 2, selected infrared sensor, two kinds of dissimilar transducers of ultrasonic sensor, infrared sensor power consumption is little and ultrasonic sensor accuracy of detection is high, and both collaborative works can form mutual supplement with each other's advantages, and can fully extend road lamp system useful life; 3, be provided with transducer and damage monitor terminal and damage alarming device, maintainer can find sensor fault in time, is convenient to later stage repair and maintenance.
Another object of the present invention is to provide a kind of high-low-position transducer alternately to follow the tracks of the control method of energy-saving streetlamp system, comprise the steps:
Step 1: the transducer that judgement is first enabled:
Address assignment: increase progressively successively along street lamp ordering, increasing step value is 1, i.e. adjacent street lamp L
nand L
n+1address there is relation: | A
n-A
n+1|=1;
Judgement is activated transducer: according to street lamp address to two deliverys, if be that the corresponding street lamp of 1 expression is first enabled high position sensor to two delivery results; To two delivery results, be that the corresponding street lamp of 0 expression is first enabled low sensors;
Step 2: detect moving target: be activated transducer and detect in real time moving target, once moving target be detected, by the movement velocity v of moving target, the direction of motion and current street lamp address are sent to the central control unit of current street lamp, and current street lamp is the street lamp that is activated transducer place;
Step 3: street lamp is enabled:
S01: current street lamp is enabled:
The central control unit of current street lamp receives the information that transducer sends that is activated, control the street lamp control module of current street lamp and light current street lamp, the work at present transducer of current street lamp enters resting state, and calculates current street lamp and continue to light time △ t=[L+R]/v;
S02: the place ahead street lamp is enabled:
The central control unit of current street lamp sends the wireless sensor module of data command to current street lamp of lighting a lamp, the described data command of lighting a lamp at least comprises current street lamp address, reception street lamp address, movement velocity, the direction of motion, the place ahead or rear minimum bright light small cup number, residue bright light small cup number, enables sensor number, wherein: the minimum bright light small cup in the place ahead is counted F=v* △ T/L;
The wireless sensor module of current street lamp is sent to the data command of lighting a lamp the central control unit of the place ahead street lamp, the central control unit of the place ahead street lamp is received and is lit a lamp after instruction, the work at present transducer of the place ahead street lamp is proceeded to resting state, and light the place ahead street lamp by the street lamp control module of the place ahead street lamp, and calculate the place ahead street lamp and continue to light time △ t
f=[L* (F-f)+L+R]/v revises the data command of lighting a lamp simultaneously, and the wireless communication module by the place ahead street lamp sends the amended data command of lighting a lamp to next the place ahead street lamp;
Above-mentioned: △ T is default the place ahead illumination minimal reaction time of road lamp system; F is the place ahead residue bright light small cup number, and a street lamp is often lighted in the place ahead, makes f=f-1; R is the detection radius that is activated transducer; L is the distance between adjacent street lamp;
S03: rear street lamp is enabled:
The wireless sensor module of current street lamp is sent to the data command of lighting a lamp the central control unit of rear street lamp simultaneously, the central control unit of rear street lamp is received and is lit a lamp after instruction, the work at present transducer of the place ahead street lamp is proceeded to resting state, and light rear street lamp by the street lamp control module of rear street lamp, and calculate rear street lamp and continue to light time △ t
b=[L* (B-b)]/v revises the data command of lighting a lamp simultaneously, and the wireless communication module by rear street lamp sends the amended data command of lighting a lamp to next rear street lamp;
Above-mentioned: B is default rear minimum bright light small cup number, and B is not less than 2; B is rear residue bright light small cup number, and the initial value of b is B, and a street lamp is often lighted at rear, makes b=b-1;
Step 4: the end of lighting a lamp: be 0 if remain bright light small cup number in the data command of lighting a lamp, only light the street lamp that receives this data command of lighting a lamp, and the work at present transducer of this street lamp is proceeded to resting state, no longer revise, forward the data command of lighting a lamp.
The number of times U that enables continuously of the high position sensor of same street lamp or low sensors is no more than 3 times, and method of operation is as follows:
Step1: during road lamp system initialization, the number of times U that enables continuously of the high position sensor of street lamp, low sensors is set to 0, this is enabled sensor number and is initialized as 0; According to street lamp address to two deliverys: result is that high position sensor is first enabled in 1 expression, and U value is updated to 1, and this enables sensor number is 1, and corresponding low sensors is in resting state; Result is that low sensors is first enabled in 0 expression, and U value is updated to-1, and this enables sensor number is-1, and corresponding high position sensor is in resting state;
Step2: read the data command of lighting a lamp, high position sensor or low sensors are first enabled in data command judgement according to lighting a lamp: for first enabling high position sensor, first judge whether U is more than or equal to 3, if low sensors is selected in U >=3, and make U=-1; Otherwise, continue to select high position sensor, and continue to judge whether U is greater than 0, if U > 0 makes U=U+1, otherwise, make U=1; For first enabling low sensors, first judge whether U is less than or equal to-3, if high position sensor is selected in U≤-3, and make U=1; Otherwise, continue to select low sensors, and continue to judge whether U is less than 0, if U < 0 makes U=U+1, otherwise, make U=-1.
Be positioned at road the same side and be installed on transducer on two adjacent street lamps and carry out moving target while detecting simultaneously or be positioned at road both sides and be installed on transducer on two relative street lamps carrying out moving target while detecting simultaneously, central control unit is controlled the different transducer of preferred site height and is detected according to enabling sensor number.
If current street lamp receives from the lighting a lamp during data command of other two street lamps, according to following step process: (one) lights current street lamp simultaneously;
(2) the light a lamp relation of " current street lamp address " and " receiving street lamp address " in data command of same relatively, judgement transmission the light a lamp street lamp of data command and the position relationship of current street lamp:
(a) if all left side in current street lamp or all right side in current street lamp, then two " direction of motion " fields in data command of lighting a lamp relatively:
As identical in " direction of motion " field, show that current street lamp is in sending motion the place ahead or the motion rear of two street lamps of instruction, that data command of lighting a lamp that " residue bright light small cup number " is many is revised and forwarded to the central control unit of current street lamp, and according to this data command of lighting a lamp, current street lamp is set and continues the time of lighting;
As different in " direction of motion " field, two street lamps that show to send instruction are the motion the place ahead in current street lamp and motion rear respectively, that data command of lighting a lamp that points to motion the place ahead is revised and forwarded to the central control unit of current street lamp, and according to this data command of lighting a lamp, current street lamp is set and continues the time of lighting;
(b) if send, light a lamp two street lamps of data command respectively in current street lamp left side and right side, then two " direction of motion " fields of lighting a lamp in the instruction of data office relatively:
As direction of motion field value is 1, show that current street lamp is in sending motion the place ahead of two street lamps of instruction, the central control unit of current street lamp is all modified and forwards two data commands of lighting a lamp, calculate to receive respectively the time that two current street lamps while lighting a lamp data command need to continue to light, choose and continue to light time the greater and continue as current street lamp the time of lighting;
As direction of motion field value is-1, show that current street lamp is in sending the motion rear of two street lamps of instruction, the central control unit of current street lamp is not all modified or forwards two data commands of lighting a lamp, calculate to receive respectively the time that two current street lamps while lighting a lamp data command need to continue to light, choose and continue to light time the greater and continue as current street lamp the time of lighting;
As direction of motion field value is respectively 1 and-1, show current street lamp the motion the place ahead in two lamps and motion rear respectively, calculate to receive respectively the time that two current street lamps while lighting a lamp data command need to continue to light, choose and continue to light time the greater and continue as current street lamp the time of lighting.
If the transducer that is activated of current street lamp detects moving target, the wireless control module of current street lamp receives again the data command of lighting a lamp from adjacent street lamp simultaneously, according to following step process:
First the work at present transducer of current street lamp is proceeded to resting state, lights current street lamp, and compare movement velocity and the direction of motion of moving target:
1) if the direction of motion is identical, and it is larger to be activated the movement velocity of the moving target that transducer detects, and abandons the data command of lighting a lamp of sending from adjacent street lamp, by the transducer that is activated of current street lamp, moving target detected and processes;
If the direction of motion is identical, and the movement velocity that is activated the moving target that transducer detects is less, calculate the minimum bright light small cup in the place ahead or rear of moving target and count F ', if F ' is greater than the residue bright light small cup of lighting a lamp in data command of sending from adjacent street lamp and counts f, f and the F value of lighting a lamp in data command from adjacent street lamp, sent are revised as respectively to F ' and F+F '-f, then the data command forward process of lighting a lamp;
2), if the direction of motion is different, by current street lamp, receives from lighting a lamp during data command of other two street lamps simultaneously and process.
Compared with prior art, the beneficial effect that the control method that high-low-position transducer provided by the invention is alternately followed the tracks of energy-saving streetlamp system reaches is: 1, shorten wireless network effective communication distance, reduce transmitting power.Every street lamp only forwards the data command of lighting a lamp from adjacent street lamp, therefore each street lamp transmitted power is as long as adjacent two street lamps can receive the data command of lighting a lamp before and after guaranteeing to make, take adjacent two coverages that street lamp spacing is wireless signal transmission, greatly reduce communication energy consumption; 2, during street lamp bright light, if any other moving target, through this street lamp detection range, due to the temporary transient dormancy of transducer, can not trigger and light a lamp data command and send to adjacent street lamp the data command of lighting a lamp, reduce the power consumption of transducer, thereby reduced the energy consumption of whole road lamp system; 3, by setting the place ahead illumination minimal reaction time Δ T, guarantee the reaction time that human pilot has sufficient forward sight distance and processes case of emergency, ensured traffic safety; 4, high position sensor, low sensors space mode of operation, form mutual supplement with each other's advantages mode of operation, reduced single-sensor continuous working period, reduces sensor fault rate, extends road lamp system working life.5, the Processing Algorithm of multiple special circumstances, by analyzing street lamp relatively move direction, the position of target, saving communication instruction unnecessary and that repeat sends, reduce the sending and receiving number of times of wireless communication module, reduce communication interference, shorten the sensor assembly operating time, thereby energy efficient extends the system works life-span.
Accompanying drawing explanation
Fig. 1 is the structural principle block diagram that high-low-position transducer is alternately followed the tracks of energy-saving streetlamp system.
Fig. 2 is installation of sensors position view.
Fig. 3 is that road both sides street lamp is enabled transducer schematic diagram.
Fig. 4 is the data command format chart of lighting a lamp.
Fig. 5 is transducer faiture alarm command format figure.
Fig. 6 is transducer selection algorithm flow chart.
Fig. 7 is the operational flowchart of the first special circumstances.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.Following examples are only for technical scheme of the present invention is more clearly described, and can not limit the scope of the invention with this.
As shown in Figure 1, high-low-position transducer is alternately followed the tracks of the structural principle block diagram of energy-saving streetlamp system, comprising: be respectively in some street lamps of both sides, road surface, and for road lighting, recommendation little power consumption, the LED street lamp that light efficiency is high, the life-span is long.Street lamp control module is connected with central control unit, for controlling lighting and extinguishing of street lamp.Wireless communication module is for the transmission of the data command of lighting a lamp between adjacent street lamp, and the communicating by letter of wireless sensor network and central control unit.As shown in Figure 2, transducer comprises high position sensor, is arranged on the low sensors of high position sensor below: for gathering the echo signal entering in detection range.High position sensor, low sensors can be infrared sensors, also can be ultrasonic sensor, but the high position sensor on same street lamp and low sensors are selected transducers different in above-mentioned classification, if that is: high position sensor is selected infrared sensor, low sensors is selected ultrasonic sensor; If high position sensor is selected ultrasonic sensor, low sensors is selected infrared sensor.Adopt high position sensor, low sensors space mode of operation to form and have complementary advantages, fully extend road lamp system useful life.Transducer control module: for controlling the operating state of high position sensor, low sensors.Central control unit, for receiving the moving target coherent signal of high position sensor, low sensors transmission, records the continuous access times of transducer, exports the data command of lighting a lamp, and sends the data command of lighting a lamp to street lamp control module by wireless communication module.For ease of controlling, each street lamp is all assigned unique street lamp address, and correspondingly, each transducer also has unique sensor number.
As shown in Figure 3, be positioned at the street lamp of road the same side, high position sensor and low sensors are interval work, and relative two street lamps in the synchronization road both sides also different transducer of preferred site height carry out moving target detection, for detected region, road surface is covered comprehensively, avoid exist detecting dead band, the detection radius of high position sensor, the detection radius of low sensors are all not less than half of distance between the adjacent street lamp of road homonymy, and are all not less than road width half.
Owing to comprising a plurality of transducers in whole road lamp system, when transducer breaks down, maintainer accurately finds out the transducer having damaged, to overhaul in time, to change, for this reason, in road lamp system, be provided for monitor terminal and the damage alarming device whether monitoring sensor damages.Monitor terminal can be voltage or the current sensor that is connected to loop, transducer place, damage alarming device is for sending the instruction of transducer faiture alarm to central control unit, as shown in Figure 5, in the instruction of transducer faiture alarm, should at least comprise street lamp address, transducer place, instruction type code and damage sensor number.
High-low-position transducer is alternately followed the tracks of the control method of energy-saving streetlamp system, comprises the steps:
Step 1: the transducer that judgement is first enabled:
Address assignment: increase progressively successively along street lamp ordering, increasing step value is 1, i.e. adjacent street lamp L
nand L
n+1address there is relation: | A
n-A
n+1|=1;
Judgement is activated transducer: according to street lamp address to two deliverys, if be that the corresponding street lamp of 1 expression is first enabled high position sensor to two delivery results; To two delivery results, be that the corresponding street lamp of 0 expression is first enabled low sensors;
Step 2: detect moving target: be activated transducer and detect in real time moving target, once moving target be detected, by the movement velocity v of moving target, the direction of motion and current street lamp address are sent to the central control unit of current street lamp, and current street lamp is the street lamp that is activated transducer place;
Step 3: street lamp is enabled:
S01: current street lamp is enabled:
The central control unit of current street lamp receives the information that transducer sends that is activated, control the street lamp control module of current street lamp and light current street lamp, the work at present transducer of current street lamp enters resting state, and calculates current street lamp and continue to light time △ t=[L+R]/v;
S02: the place ahead street lamp is enabled:
The central control unit of current street lamp sends the wireless sensor module of data command to current street lamp of lighting a lamp.As shown in Figure 4, the data command of lighting a lamp comprises current street lamp address, reception street lamp address, movement velocity, the direction of motion, the place ahead or rear minimum bright light small cup number, residue bright light small cup number, enables sensor number, wherein: the minimum bright light small cup in the place ahead is counted F=v* △ T/L.For example: preset Δ T=10 second, street lamp spacing L=30 rice, thousand ms/h of moving target movement velocity v=60 detected, the place ahead the shortest illumination distances M=v * Δ T=(60000/3600) * 10 meter=167 meters, therefore, the minimum bright light small cup in the place ahead is counted 6 of F=M/L=167 ÷ 30 ≈, and, for the shortest illumination distances M in the place ahead and the aliquant situation of street lamp spacing L, F gets the smallest positive integral that is greater than M/L.For the ease of system identification, for the direction of motion, with numeral 1, represent forward direction, numeral-1 represents backward.
The wireless sensor module of current street lamp is sent to the data command of lighting a lamp the central control unit of the place ahead street lamp, the central control unit of the place ahead street lamp is received and is lit a lamp after instruction, the work at present transducer of the place ahead street lamp is proceeded to resting state, and light the place ahead street lamp by the street lamp control module of the place ahead street lamp, and calculate the place ahead street lamp and continue to light time △ t
f=[L* (F-f)+L+R]/v revises the data command of lighting a lamp simultaneously, and the wireless communication module by the place ahead street lamp sends the amended data command of lighting a lamp to next the place ahead street lamp;
Above-mentioned: △ T is default the place ahead illumination minimal reaction time of road lamp system; F is the place ahead residue bright light small cup number, and a street lamp is often lighted in the place ahead, makes f=f-1; R is the detection radius that is activated transducer; L is the distance between adjacent street lamp;
S03: rear street lamp is enabled:
The wireless sensor module of current street lamp is sent to the data command of lighting a lamp the central control unit of rear street lamp simultaneously, the central control unit of rear street lamp is received and is lit a lamp after instruction, the work at present transducer of the place ahead street lamp is proceeded to resting state, and light rear street lamp by the street lamp control module of rear street lamp, and calculate rear street lamp and continue to light time △ t
b=[L* (B-b)]/v revises the data command of lighting a lamp simultaneously, and the wireless communication module by rear street lamp sends the amended data command of lighting a lamp to next rear street lamp;
Above-mentioned: B is default rear minimum bright light small cup number, and B is not less than 2; B is rear residue bright light small cup number, and the initial value of b is B, and a street lamp is often lighted at rear, makes b=b-1;
Step 4: the end of lighting a lamp: be 0 if remain bright light small cup number in the data command of lighting a lamp, showing to receive the light a lamp current street lamp of data command is last street lamp that need to light, and the work at present transducer of this street lamp is proceeded to resting state, only light the street lamp that receives this data command of lighting a lamp, no longer revise, forward the data command of lighting a lamp.Be positioned at road the same side and be installed on transducer on two adjacent street lamps and carry out moving target while detecting simultaneously or be positioned at road both sides and be installed on transducer on two relative street lamps carrying out moving target while detecting simultaneously, central control unit is controlled the different transducer of preferred site height and is detected according to enabling sensor number.The mode of operation that can form mutual supplement with each other's advantages is used at high position sensor and low sensors interval, reduces to greatest extent power consumption, improves accuracy of detection, and same transducer continuous operation number of times is no more than 3 times, to extend transducer useful life.
As shown in Figure 6, the number of times U that enables continuously of the high position sensor of same street lamp or low sensors is no more than 3 times, and method of operation is as follows:
Step1: during road lamp system initialization, the number of times U that enables continuously of the high position sensor of street lamp, low sensors is set to 0, this is enabled sensor number and is initialized as 0; According to street lamp address to two deliverys: result is that high position sensor is first enabled in 1 expression, and U value is updated to 1, and this enables sensor number is 1, and corresponding low sensors is in resting state; Result is that low sensors is first enabled in 0 expression, and U value is updated to-1, and this enables sensor number is-1, and corresponding high position sensor is in resting state;
Step2: read the data command of lighting a lamp, high position sensor or low sensors are first enabled in data command judgement according to lighting a lamp: for first enabling high position sensor, first judge whether U is more than or equal to 3, if low sensors is selected in U >=3, and make U=-1; Otherwise, continue to select high position sensor, and continue to judge whether U is greater than 0, if U > 0 makes U=U+1, otherwise, make U=1; For first enabling low sensors, first judge whether U is less than or equal to-3, if high position sensor is selected in U≤-3, and make U=1; Otherwise, continue to select low sensors, and continue to judge whether U is less than 0, if U < 0 makes U=U+1, otherwise, make U=-1.
Above-mentioned control method can effectively solve the moving target situation of single appearance one by one, reaches the object of light a lamp in time control, energy efficient.
As everyone knows, road traffic condition is complicated and changeable, and the appearance of moving target is not in most cases single, and at synchronization, near street lamp transducer may detect moving target separately, causes multiple special circumstances to occur, classification is processed as follows:
The first situation: current street lamp receives from the lighting a lamp during data command of other two street lamps simultaneously, processes according to table 1:
Table 1:
In table " left front " represent to light a lamp data command is sent by the left side street lamp of current street lamp and current street lamp in motion the place ahead; " right front " represent to light a lamp data command is sent by the right side street lamp of current street lamp and current street lamp in motion the place ahead; " left back " represent to light a lamp data command is sent by the left side street lamp of current street lamp and current street lamp in motion rear; " right back " represent to light a lamp data command is sent by the right side street lamp of current street lamp and current street lamp in motion rear.
As shown in Figure 7, be the operational flowchart of the first special circumstances, in Fig. 7 the represented processing decision-making of alphabetical A to F corresponding with table 1, concrete handling process is described as follows: (one) lights current street lamp;
(2) the light a lamp relation of " current street lamp address " and " receiving street lamp address " in data command of same relatively, judgement transmission the light a lamp street lamp of data command and the position relationship of current street lamp:
(a) if all left side in current street lamp or all right side in current street lamp, then two " direction of motion " fields in data command of lighting a lamp relatively:
As identical in " direction of motion " field, show that current street lamp is in sending motion the place ahead or the motion rear of two street lamps of instruction, that data command of lighting a lamp that " residue bright light small cup number " is many is revised and forwarded to the central control unit of current street lamp, and according to this data command of lighting a lamp, current street lamp is set and continues the time of lighting;
As different in " direction of motion " field, two street lamps that show to send instruction are the motion the place ahead in current street lamp and motion rear respectively, that data command of lighting a lamp that points to motion the place ahead is revised and forwarded to the central control unit of current street lamp, and according to this data command of lighting a lamp, current street lamp is set and continues the time of lighting;
(b) if send, light a lamp two street lamps of data command respectively in current street lamp left side and right side, then two " direction of motion " fields of lighting a lamp in the instruction of data office relatively:
As direction of motion field value is 1, show that current street lamp is in sending motion the place ahead of two street lamps of instruction, the central control unit of current street lamp is all modified and forwards two data commands of lighting a lamp, calculate to receive respectively the time that two current street lamps while lighting a lamp data command need to continue to light, choose and continue to light time the greater and continue as current street lamp the time of lighting;
As direction of motion field value is-1, show that current street lamp is in sending the motion rear of two street lamps of instruction, the central control unit of current street lamp is not all modified or forwards two data commands of lighting a lamp, calculate to receive respectively the time that two current street lamps while lighting a lamp data command need to continue to light, choose and continue to light time the greater and continue as current street lamp the time of lighting;
As direction of motion field value is respectively 1 and-1, show current street lamp the motion the place ahead in two lamps and motion rear respectively, calculate to receive respectively the time that two current street lamps while lighting a lamp data command need to continue to light, choose and continue to light time the greater and continue as current street lamp the time of lighting.
The second situation: if the transducer that is activated of current street lamp detects moving target, the wireless control module of current street lamp receives again the data command of lighting a lamp from adjacent street lamp simultaneously, according to following step process:
First the work at present transducer of current street lamp is proceeded to resting state, light current street lamp, and the movement velocity and the direction of motion of comparison moving target: 1) if the direction of motion is identical, and the movement velocity that is activated the moving target that transducer detects is larger, abandon the data command of lighting a lamp of sending from adjacent street lamp, by the transducer that is activated of current street lamp, moving target processing detected;
If the direction of motion is identical, and the movement velocity that is activated the moving target that transducer detects is less, calculate the minimum bright light small cup in the place ahead or rear of moving target and count F ', if F ' is greater than the residue bright light small cup of lighting a lamp in data command of sending from adjacent street lamp and counts f, f and the F value of lighting a lamp in data command from adjacent street lamp, sent are revised as respectively to F ' and F+F '-f, then the data command forward process of lighting a lamp;
2), if the direction of motion is different, by current street lamp, receives from lighting a lamp during data command of other two street lamps simultaneously and process.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvement and distortion, these improvement and distortion also should be considered as protection scope of the present invention.
Claims (9)
1. high-low-position transducer is alternately followed the tracks of energy-saving streetlamp system, it is characterized in that, described road lamp system comprises:
Be respectively in some street lamps of both sides, road surface: for road lighting;
Street lamp control module: for controlling lighting and extinguishing of street lamp;
Wireless sensor network: comprise high position sensor, be arranged on the low sensors of high position sensor below: for gathering the echo signal entering in detection range;
Transducer control module: for controlling the operating state of high position sensor, low sensors;
Central control unit: for receiving the moving target coherent signal of high position sensor, low sensors transmission, record the continuous access times of transducer, export the data command of lighting a lamp, and send the data command of lighting a lamp to street lamp control module by wireless communication module;
Wireless communication module: for the transmission of the data command of lighting a lamp between adjacent street lamp, and the communicating by letter of wireless sensor network and central control unit.
2. high-low-position transducer according to claim 1 is alternately followed the tracks of energy-saving streetlamp system, it is characterized in that, the detection radius of described high position sensor, the detection radius of low sensors are all not less than half of distance between the adjacent street lamp of road homonymy, and are all not less than road width half.
3. high-low-position transducer according to claim 1 and 2 is alternately followed the tracks of energy-saving streetlamp system, it is characterized in that, described road lamp system also comprises monitor terminal and the damage alarming device whether damaging for monitoring sensor.
4. high-low-position transducer according to claim 1 is alternately followed the tracks of energy-saving streetlamp system, it is characterized in that, the classification of selecting of described high position sensor is infrared sensor or ultrasonic sensor, the classification of selecting of described low sensors is also infrared sensor or ultrasonic sensor, and the high position sensor on same street lamp and low sensors are selected transducers different in above-mentioned classification.
5. high-low-position transducer is alternately followed the tracks of the control method of energy-saving streetlamp system, it is characterized in that, comprises the steps:
Step 1: the transducer that judgement is first enabled:
Address assignment: increase progressively successively along street lamp ordering, increasing step value is 1, i.e. adjacent street lamp L
nand L
n+1address there is relation: | A
n-A
n+1|=1;
Judgement is activated transducer: according to street lamp address to two deliverys, if be that the corresponding street lamp of 1 expression is first enabled high position sensor to two delivery results; To two delivery results, be that the corresponding street lamp of 0 expression is first enabled low sensors;
Step 2: detect moving target: be activated transducer and detect in real time moving target, once moving target be detected, by the movement velocity v of moving target, the direction of motion and current street lamp address are sent to the central control unit of current street lamp, and current street lamp is the street lamp that is activated transducer place;
Step 3: street lamp is enabled:
S01: current street lamp is enabled:
The central control unit of current street lamp receives the information that transducer sends that is activated, control the street lamp control module of current street lamp and light current street lamp, the work at present transducer of current street lamp enters resting state, and calculates current street lamp and continue to light time △ t=[L+R]/v;
S02: the place ahead street lamp is enabled:
The central control unit of current street lamp sends the wireless sensor module of data command to current street lamp of lighting a lamp, the described data command of lighting a lamp at least comprises current street lamp address, reception street lamp address, movement velocity, the direction of motion, the place ahead or rear minimum bright light small cup number, residue bright light small cup number, enables sensor number, wherein: the minimum bright light small cup in the place ahead is counted F=v* △ T/L;
The wireless sensor module of current street lamp is sent to the data command of lighting a lamp the central control unit of the place ahead street lamp, the central control unit of the place ahead street lamp is received and is lit a lamp after instruction, the work at present transducer of the place ahead street lamp is proceeded to resting state, and light the place ahead street lamp by the street lamp control module of the place ahead street lamp, and calculate the place ahead street lamp and continue to light time △ t
f=[L* (F-f)+L+R]/v revises the data command of lighting a lamp simultaneously, and the wireless communication module by the place ahead street lamp sends the amended data command of lighting a lamp to next the place ahead street lamp;
Above-mentioned: △ T is default the place ahead illumination minimal reaction time of road lamp system; F is the place ahead residue bright light small cup number, and a street lamp is often lighted in the place ahead, makes f=f-1; R is the detection radius that is activated transducer; L is the distance between adjacent street lamp;
S03: rear street lamp is enabled:
The wireless sensor module of current street lamp is sent to the data command of lighting a lamp the central control unit of rear street lamp simultaneously, the central control unit of rear street lamp is received and is lit a lamp after instruction, the work at present transducer of rear street lamp is proceeded to resting state, and light rear street lamp by the street lamp control module of rear street lamp, and calculate rear street lamp and continue to light time △ t
b=[L* (B-b)]/v revises the data command of lighting a lamp simultaneously, and the wireless communication module by rear street lamp sends the amended data command of lighting a lamp to next rear street lamp;
Above-mentioned: B is default rear minimum bright light small cup number, and B is not less than 2; B is rear residue bright light small cup number, and the initial value of b is B, and a street lamp is often lighted at rear, makes b=b-1;
Step 4: the end of lighting a lamp: be 0 if remain bright light small cup number in the data command of lighting a lamp, only light the street lamp that receives this data command of lighting a lamp, and the work at present transducer of this street lamp is proceeded to resting state, no longer revise, forward the data command of lighting a lamp.
6. the control method that high-low-position transducer according to claim 5 is alternately followed the tracks of energy-saving streetlamp system, is characterized in that, the number of times U that enables continuously of the high position sensor of same street lamp or low sensors is no more than 3 times, and method of operation is as follows:
Step1: during road lamp system initialization, the number of times U that enables continuously of the high position sensor of street lamp, low sensors is set to 0, this is enabled sensor number and is initialized as 0; According to street lamp address to two deliverys: result is that high position sensor is first enabled in 1 expression, and U value is updated to 1, and this enables sensor number is 1, and corresponding low sensors is in resting state; Result is that low sensors is first enabled in 0 expression, and U value is updated to-1, and this enables sensor number is-1, and corresponding high position sensor is in resting state;
Step2: read the data command of lighting a lamp, high position sensor or low sensors are first enabled in data command judgement according to lighting a lamp: for first enabling high position sensor, first judge whether U is more than or equal to 3, if low sensors is selected in U >=3, and make U=-1; Otherwise, continue to select high position sensor, and continue to judge whether U is greater than 0, if U > 0 makes U=U+1, otherwise, make U=1; For first enabling low sensors, first judge whether U is less than or equal to-3, if high position sensor is selected in U≤-3, and make U=1; Otherwise, continue to select low sensors, and continue to judge whether U is less than 0, if U < 0 makes U=U+1, otherwise, make U=-1.
7. the control method that high-low-position transducer according to claim 5 is alternately followed the tracks of energy-saving streetlamp system, it is characterized in that, be positioned at road the same side and be installed on transducer on two adjacent street lamps and carry out moving target while detecting simultaneously or be positioned at road both sides and be installed on transducer on two relative street lamps carrying out moving target while detecting simultaneously, central control unit is controlled the different transducer of preferred site height and is detected according to enabling sensor number.
8. the control method that high-low-position transducer according to claim 5 is alternately followed the tracks of energy-saving streetlamp system, it is characterized in that, if current street lamp receives from the lighting a lamp during data command of other two street lamps, according to following step process: (one) lights current street lamp simultaneously;
(2) the light a lamp relation of " current street lamp address " and " receiving street lamp address " in data command of same relatively, judgement transmission the light a lamp street lamp of data command and the position relationship of current street lamp:
(a) if all left side in current street lamp or all right side in current street lamp, then two " direction of motion " fields in data command of lighting a lamp relatively:
As identical in " direction of motion " field, show that current street lamp is in sending motion the place ahead or the motion rear of two street lamps of instruction, that data command of lighting a lamp that " residue bright light small cup number " is many is revised and forwarded to the central control unit of current street lamp, and according to this data command of lighting a lamp, current street lamp is set and continues the time of lighting;
As different in " direction of motion " field, two street lamps that show to send instruction are the motion the place ahead in current street lamp and motion rear respectively, that data command of lighting a lamp that points to motion the place ahead is revised and forwarded to the central control unit of current street lamp, and according to this data command of lighting a lamp, current street lamp is set and continues the time of lighting;
(b) if send, light a lamp two street lamps of data command respectively in current street lamp left side and right side, then two " direction of motion " fields of lighting a lamp in the instruction of data office relatively:
As direction of motion field value is 1, show that current street lamp is in sending motion the place ahead of two street lamps of instruction, the central control unit of current street lamp is all modified and forwards two data commands of lighting a lamp, calculate to receive respectively the time that two current street lamps while lighting a lamp data command need to continue to light, choose and continue to light time the greater and continue as current street lamp the time of lighting;
As direction of motion field value is-1, show that current street lamp is in sending the motion rear of two street lamps of instruction, the central control unit of current street lamp is not all modified or forwards two data commands of lighting a lamp, calculate to receive respectively the time that two current street lamps while lighting a lamp data command need to continue to light, choose and continue to light time the greater and continue as current street lamp the time of lighting;
As direction of motion field value is respectively 1 and-1, show current street lamp the motion the place ahead in two lamps and motion rear respectively, calculate to receive respectively the time that two current street lamps while lighting a lamp data command need to continue to light, choose and continue to light time the greater and continue as current street lamp the time of lighting.
9. the control method that high-low-position transducer according to claim 8 is alternately followed the tracks of energy-saving streetlamp system, it is characterized in that, if the transducer that is activated of current street lamp detects moving target, the wireless control module of current street lamp receives again the data command of lighting a lamp from adjacent street lamp simultaneously, according to following step process:
First the work at present transducer of current street lamp is proceeded to resting state, lights current street lamp, and compare movement velocity and the direction of motion of moving target:
1) if the direction of motion is identical, and it is larger to be activated the movement velocity of the moving target that transducer detects, and abandons the data command of lighting a lamp of sending from adjacent street lamp, by the transducer that is activated of current street lamp, moving target detected and processes;
If the direction of motion is identical, and the movement velocity that is activated the moving target that transducer detects is less, calculate the minimum bright light small cup in the place ahead or rear of moving target and count F ', if F ' is greater than the residue bright light small cup of lighting a lamp in data command of sending from adjacent street lamp and counts f, f and the F value of lighting a lamp in data command from adjacent street lamp, sent are revised as respectively to F ' and F+F '-f, then the data command forward process of lighting a lamp;
2), if the direction of motion is different, by current street lamp, receives from lighting a lamp during data command of other two street lamps simultaneously and process.
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