WO2012048532A1

WO2012048532A1 - Road lighting device, distributed node energy-saving lighting system and method for operating same

Info

Publication number: WO2012048532A1
Application number: PCT/CN2011/001715
Authority: WO
Inventors: 黄富杰; 温携勇; 江志清
Original assignee: Huang Fujie; Wen Xieyong; Jiang Zhiqing
Priority date: 2010-10-15
Filing date: 2011-10-13
Publication date: 2012-04-19
Also published as: CN102056374B; CN102056374A; AU2011316420A1

Abstract

A road lighting device, a corresponding distributed node energy-saving lighting system and a method for operating the same. The road lighting device is connected to a light source (111) and has a power module (112). The road lighting device further comprises a sensing control unit and a communication control unit, wherein the sensing control unit enables the light source to be in a normal lighting state according to a vehicle signal, and the communication control unit enables the light source to be in a normal lighting state according to broadcast information containing a triggering instruction code. The sensing control unit and the communication control unit can separately or jointly control the light source, thus achieving intelligent control, rendering it possible for each road lamp equipped with such a road lighting device to independently carry out intelligent judgment on road usage and carry out dynamic energy-saving adjustment in real time, so as to ensure necessary useful illuminance and eliminate useless illuminance as far as possible. By using the distributed node energy-saving lighting system and the method for operating the same, all the road lamps are interconnected to form a network, thereby achieving intelligent automatic identification of failure and information feedback, as well as remote intelligent management and point-to-point control.

Description

Road lighting device, distributed node type energy-saving lighting system and operating method thereof

Technical field

The present invention relates to a road lighting device, a system using the road lighting device, and an operating method for the system, and also to a method of retrofitting an existing street lamp system using the road lighting device. Background technique

Road lighting consumes a lot of energy. In road lighting energy conservation, lighting control is one of the important ways. In the existing road lighting control mode, the midnight light mode is generally used, and the street lamp is normally illuminated in the middle of the night, and the power of the street lamp is lowered in the middle of the night when the vehicle is less, thereby achieving the purpose of energy saving. In addition, there is an energy-saving control technology that controls the road segmentation. Each segment is set with a grating to detect the traffic flow condition and control the segment. However, the prior art tends to sacrifice some of the useful illumination and does not substantially eliminate unwanted illumination.

The use of roads varies widely. The situation in different areas, different seasons, different time periods, different days, occasional events, etc., is very complicated. There are certain illuminance standards for the use of roads. However, the important purpose of road lighting is to provide services to users (of course, some have landscape functions). When there is no vehicle on the road, the lighting loses its service subject, which loses its meaning. At present, there is no lighting control technology that can truly realize intelligent control, so that each street lamp can independently judge the use of the road and dynamically adjust energy in real time, and all the street lights can be connected to each other to form a network. , intelligent automatic identification and information feedback for faults, as well as remote intelligent management and peer-to-peer control. Summary of the invention

Accordingly, it is an object of the present invention to provide a road lighting device, and to provide a system constructed using the road lighting device or to utilize the road lighting device to perform energy saving upgrades on an existing road lighting system.

This object is achieved by a road lighting device according to the invention, a distributed node type energy-saving lighting system according to the invention, and an operating method for a distributed node-type energy-saving lighting system according to the invention, and also by a method according to the invention Use of road lighting devices for existing roads

- 1 - Confirmation The method of upgrading the lights is implemented.

According to an aspect of the present invention, a road lighting device is provided that is connected to a light source and has a power module.

The road lighting device further includes:

a sensing control unit that causes the light source to be in a normal illumination state according to the vehicle signal, and a communication control unit that causes the light source to be in a normal illumination state according to the broadcast information including the trigger instruction code;

The sensing control unit and the communication control unit are each capable of controlling the light source independently or in combination; according to a preferred embodiment of the invention, the sensing control unit comprises a control module and a sensor, wherein the control module can be a separate module, It can be integrated in the central control unit (ie it is part of the central control unit).

According to a preferred embodiment of the invention, the communication control unit comprises a control module and a communication module, wherein the control module can be a separate module or integrated in the central control unit (ie it is part of the central control unit) . The communication module can send and receive broadcast information.

According to a preferred embodiment of the invention, the control module of the sensing control unit and the control module of the communication control unit can be integrated in the same central control unit.

According to a preferred embodiment of the invention, the sensing control unit and the communication control unit control the light source in a parallel manner, wherein "in parallel" means that both the sensing control unit and the communication control unit can cause the light source to be in normal illumination status. That is, the sensing control unit and the communication control unit can be analogized to two parallel controllers for controlling the light source.

According to a preferred embodiment of the present invention, the sensing control unit issues a sensor trigger signal when the vehicle signal is detected, and the light source is in the normal period during the sensor trigger delay period from the time when the sensor trigger signal is valid and the sensor trigger signal disappears. The illumination state, and the communication control unit causes the light source to be in a normal illumination state within a broadcast trigger delay period from the moment the triggering of the trigger instruction code is included in the broadcast information.

According to a preferred embodiment of the invention, the broadcast information is sent by the in-vehicle wireless transmitter and/or by the communication control unit of the further road lighting device.

According to another aspect of the present invention, a road lighting device is provided that is coupled to a light source and has a power module, wherein the road lighting device further includes

a power output module coupled to the light source; a central control unit for controlling road lighting;

a communication module connected to the central control unit, the communication module capable of transmitting and receiving broadcast information within a communication range;

The communication module decodes the received broadcast information and transmits the instruction code to the central control unit.

The central control unit identifies the instruction code,

among them,

When the central control unit recognizes that the instruction code contains the trigger trigger code from the moment of the trigger trigger code,

The power output module causes the light source to be in a normal illumination state under the control of the central control unit, wherein the broadcast information received by the communication module includes broadcast information sent by the in-vehicle wireless transmitter, and the broadcast information sent by the in-vehicle wireless transmitter includes Trigger the instruction code.

According to a preferred embodiment of the invention, the road lighting device further comprises a sensor coupled to the central control unit for detecting the vehicle signal within the sensor detection range;

The sensor transmits a sensor trigger signal to the central control unit when the vehicle signal is detected, and the communication module transmits the broadcast information including the trigger instruction code in response to the leading edge of the sensor trigger signal under the control of the central control unit.

among them,

The broadcast information received by the communication module includes broadcast information transmitted by a communication module of another road lighting device;

among them,

During the sensor trigger delay period from the time when the sensor trigger signal is valid and when the sensor trigger signal disappears, and within the broadcast trigger delay period from the time when the central control unit recognizes that the command code contains the trigger instruction code,

The power output module places the light source in a normal illumination state under the control of the central control unit. According to a preferred embodiment of the invention, the communication range is greater than the sensor detection range.

And, the road lighting device further includes:

a sensor connected to the central control unit for detecting vehicle signals within the sensor detection range; and,

a communication module connected to the central control unit, the communication module for transmitting or receiving broadcast information within a communication range;

among them,

The sensor transmits a sensor trigger signal to the central control unit when the vehicle signal is detected, and the communication module can transmit and receive the broadcast information including the instruction code under the control of the central control unit, where

The communication module transmits broadcast information including the trigger instruction code in response to the leading edge of the sensor trigger signal under the control of the central control unit, and the communication module decodes the received broadcast information and transmits the instruction code to the central control unit,

The central control unit identifies the instruction code, and

among them,

Within the sensor trigger delay period from the time the sensor trigger signal is active and the sensor trigger signal disappears, and

The power output module places the light source in a normal illumination state under the control of the central control unit. Preferably, at least two such road lighting devices can be utilized to form a distributed node type energy efficient lighting system, in which each road lighting device is in communication range of at least one other road lighting device Within, or in part, its distance from at least one other road lighting device is less than the communication distance.

In the context of the present invention, the sensor may be a light sensor that outputs an active level when the sensor is triggered by the headlight of the vehicle, in response to the active level leading edge, the communication module transmitting a broadcast message containing the trigger command code.

The communication of these "other road lighting devices" when other road lighting devices according to the present invention are present in a predetermined range (for example, a circle having a radius of communication distance) in the vicinity of a certain road lighting device according to the present invention The module receives the broadcast information, and the communication module decodes the broadcast information and transmits the command code to the central control unit. The central control unit recognizes the instruction code Do not perform different functions depending on the instructions. For example, the instruction code can contain a trigger instruction code.

Thus, according to the present invention, when the sensor trigger signal is present and/or the command code contains a trigger command, the central control unit controls the power output module to cause the light source to be in a normal illumination state, that is, if the light source is originally in a standby state, It will be switched to the normal illumination state; if the light source is originally in the normal illumination state, the normal illumination state is maintained; in the scope of the present invention, the normal illumination state refers to a state of illumination according to a preset power, the advance The set power can be the rated power of the light source or lower than the rated power of the light source.

Then, if the sensor trigger signal disappears, after the disappearing time, after a certain preset delay period (ie, the sensor trigger delay period), the central control unit controls the power output module to switch the light source from the normal illumination state to the standby state. State, provided that no new sensor trigger or trigger command is received during the sensor trigger delay period. In the context of the present invention, a standby state refers to a power saving state (including an extinguishing state) that consumes less power than a normal lighting state.

Thus, it is achieved by the invention that the light source can be illuminated not only by means of sensors associated therewith, but also by means of broadcast information transmitted by other adjacent road lighting devices. Thus, when the vehicle is driving on the road, the street lights within a sufficient distance in front of the vehicle provide sufficient road illumination to ensure safe driving. Therefore, by using the way that the street lamp is pre-lighted before the car arrives, sufficient useful illumination is provided to ensure the necessary safety line of sight; and after the vehicle leaves, the street lamp is extinguished or is in the lowest power consumption state. . Thereby, both safety and energy consumption are guaranteed.

According to one aspect of the invention, the sensor trigger delay period and/or the broadcast trigger delay period can be pre-set according to the needs of the user. It is also conceivable that the sensor trigger delay period and/or the broadcast trigger delay period may be dependent on the busy condition of the road. Frequent switching of the state of the light source can be avoided by triggering the delay period and/or the broadcast trigger delay period with a suitable sensor.

Among them, the road lighting device also includes:

a power output module coupled to the light source;

a central control unit for controlling road lighting;

a sensor connected to a central control unit for detecting within the sensor detection range Measuring vehicle signals; and,

among them,

Sending a sensor trigger signal to the central control unit when the sensor detects the vehicle signal, wherein

The communication module is capable of causing the communication module to transmit broadcast information including the operation code in response to the leading edge of the sensor trigger signal under the control of the central control unit; and the communication module is capable of receiving the broadcast information, decoding the received broadcast information, and operating the code Transfer to the central control unit, where the central control unit identifies the operational code,

Among them, if the conditions:

The sensor trigger signal is present,

The time from the moment when the sensor trigger signal disappears is shorter than the sensor trigger delay period, and the time from the time when the central control unit recognizes that the operation code contains the trigger code is shorter than the broadcast trigger delay period;

If any of the conditions are met, the power output module connected to the central control unit causes the light source to be in a normal illumination state;

Otherwise,

A power output module coupled to the central control unit causes the light source to enter a standby state.

According to a preferred embodiment of the invention, the sensor used comprises a light sensor and/or a wireless receiver, in response to which the vehicle signal is the illumination of the vehicle headlight or the wireless signal transmitted by the in-vehicle wireless transmitter. . When used on a road, the illumination of the vehicle headlights is used as the vehicle signal, which is more reliable and easier to implement than other conventional automatic control signals (eg, acoustic signals). According to still another preferred embodiment, the wireless signal transmitted by the in-vehicle wireless transmitter can also be used as the vehicle signal, thereby further improving reliability and reducing cost. According to yet another preferred embodiment, the two signals are used simultaneously.

According to yet another preferred embodiment of the invention, the sensor has a sensitivity adjustment unit. For example, in the case of using a light-sensitive sensor to detect the illumination of a car headlight, it is usually necessary to mount the sensor in a proper position on the lamp post, and usually provided with a dustproof and anti-fouling device; even so, dust and other pollution It may still not be completely avoided, and the parameters will change due to aging of components, etc. The sensor sensitivity changes. Therefore, setting the sensitivity adjustment unit for the sensor improves control reliability and reduces maintenance. In particular, this sensitivity adjustment can be implemented either manually or automatically, as will be explained in further detail below.

According to an embodiment of the present invention, in a normal illumination state, the power output module applies normal illumination power to the light source;

The normal illumination power Pnor is equal to k*p (again, it is also conceivable that the normal illumination power Pnor takes the larger of k*p and Psaf, as explained in detail below, where Psaf is the lowest safe illumination power of the source ), among them

p is the rated power of the light source,

k is an energy saving coefficient, and the energy saving coefficient is a preset value or preferably proportional to the average value of the sensor trigger signal duty ratio in a certain period of time;

And / or, the light source can be switched from the normal lighting state to the standby state.

In the standby state, the power output module applies standby power below the normal illumination power to the light source or turns the light source off.

According to a preferred embodiment of the invention, the light source used is a gas discharge lamp, in particular a high pressure sodium lamp can be used.

According to a preferred embodiment, in the case of a gas discharge lamp, in a normal illumination state, the power output module applies a normal illumination power Pnor to the light source, wherein the normal illumination power Pnor is a preset value or is determined in the following manner:

Pnor = MAX(k*p, Psaf), that is, the normal illumination power Pnor takes the larger of k*p and Psaf,

among them,

p is the rated power of the light source,

k is the energy saving coefficient,

Psaf is the lowest safe lighting power of the light source.

Among them, the energy saving coefficient k can be given in advance. Preferably, the energy saving coefficient k can be automatically adjusted according to different parameters.

Thus, with the present invention, energy saving performance is improved under the premise of ensuring safety (ensuring the minimum illumination required for use).

According to a particularly preferred design, the energy saving factor k and the sensor touch during a certain period of time The average value of the signal duty cycle is proportional. The duty cycle of the sensor trigger signal (ie, the active level) reflects the traffic density information, ie the busy and idle information of the road. The larger the duty cycle, the greater the traffic density and the more busy the road; on the contrary, the smaller the duty cycle, the thinner the traffic and the more idle the road. With the duty ratio as the control parameter, it can be automatically adjusted to the appropriate normal lighting state according to the road use condition. At the same time, the above value method ensures that regardless of the duty ratio, the street light can be provided under normal lighting conditions. Meet the illuminance required for use while achieving the highest energy efficiency.

According to a preferred embodiment, in the case of a gas discharge lamp, in the standby state, the power output module applies the standby power Pstby to the light source, wherein the standby power Pstby is a user preset value or is determined as follows:

Pstby = Max(Pnor-w*p, Psta)

Where Pnor is the normal lighting power,

w is to adjust the bandwidth,

Psta is the lowest stable lighting power of the light source;

In other words, the standby power Pstby takes a user preset value or takes the larger of Pnor-w*p and Psta.

The value of the adjustment bandwidth w can be predetermined and is between 0.1 and 1, preferably between 0.2 and 0.8 and more preferably 0.5. Generally, the larger the adjustment bandwidth w is, the larger the difference between the standby power and the normal illumination power is, and the more obvious the energy saving effect is; however, at the same time, the larger the adjustment bandwidth w is, the more it is required to return from the standby state to the normal illumination state. The longer the time, the more the light source needs to be illuminated in advance. Therefore, adjusting the bandwidth w needs to match other parameters such as source performance, road usage requirements, communication range, sensor trigger delay period, and/or broadcast trigger delay period.

Among them, Psta can be preset, for example, preset according to the source data of the light source, or preset by the user according to the use requirements. It can also be set remotely via the remote control center.

According to a preferred embodiment, the Psta can be adjusted by the central control unit. For example, when the light source is switched from the normal illumination state to the standby state several times (for example, three consecutive times), the light source cannot work stably under the current Psta (ie, when Psta is supplied to the corresponding light source, the light source is extinguished) In the case, the Psta can be adjusted by the central control unit and recorded accordingly; when the Psta after the increase is higher than a certain set value, it can be determined that the light source is aging. This means that the light source needs to be replaced. On the one hand, the service life of the light source is utilized as much as possible, and on the other hand, the problem of excessive power consumption in the standby state of the light source is solved. According to a preferred embodiment, the voltage supplied to the light source or the current flowing through the light source does not mutate when switching from the normal illumination state to the standby state. In contrast, according to the present invention, the central control unit controls the power output module to reduce the current flowing through the light source in a phased, decreasing manner, wherein, preferably, the amount of change in each adjustment phase is less than the previous one of the light source in the adjustment phase. 30% of the operating current i at the steady state in the conditioning phase (ie, the amount of change per stage delta I <30%i); and/or, preferably, the rate of change of current (ie, di/dt) Less than 10% i/s.

According to still another preferred embodiment of the present invention, an LED, an incandescent lamp or a +3 tungsten lamp can be used as the light source, in which case the power output module can apply normal illumination power to the light source in a normal illumination state. And/or, the light source can be switched from a normal illumination state to a standby state, in which the power output module applies a standby power lower than the normal illumination power to the light source. The standby power may be a relatively small power lower than the normal lighting power, for example for the purpose of maintaining a certain illumination of the street lamp when the road is not running, in order to provide illumination for pedestrians, non-motor vehicles, etc. And it can also play a role in guiding, landscape, etc. Depending on the situation, the standby power can obviously also be zero, that is, the light source is extinguished. This is especially achievable in non-gas discharge lamps. In the case of non-gas discharge lamps, the normal illumination power can be rated or lower than the rated power.

In accordance with a preferred embodiment of the present invention, a remote communication module can also be provided on the road lighting for communication with the remote control center. With this design, the corresponding road lighting device can be controlled by the remote communication module, for example, for switching between different working modes (such as forced mode, automatic mode or maintenance mode) and/or street lamp working state information. Acquire and/or set the street light operating parameters and/or the street light fault code.

According to another aspect of the present invention, there is provided a method of upgrading an existing street light using a road lighting device according to the present invention. Most of the existing street lamps use gas discharge lamps, especially high pressure sodium lamps, which require the use of ballasts. Therefore, replacing the current ballast with the road lighting device according to the present invention and accessing the original circuit is particularly simple and feasible, low in cost, and greatly improves the energy saving performance of the street lamp system.

In particular, it can be noted that as long as one street light in the original street lamp system adopts the road lighting device according to the present invention, a certain degree of energy saving can be achieved because the street lamp can switch to the energy saving state at an appropriate time; The presence of more than one street light in a streetlight system using road lighting devices according to the present invention (the distance between them is less than the communication distance) is not only more effective Energy saving, and intelligent control can be achieved while saving energy, including ensuring the line of sight of the vehicle in a pre-lighted manner, as discussed in detail below. Similarly, the maintenance work of the street lamp system (for example, the location of the fault street lamp and the acquisition of the fault type, the setting of the street lamp operating parameters) can be significantly simplified, and the intelligent remote management can be realized at low cost. This significantly reduces maintenance costs.

According to still another aspect of the present invention, a distributed node type energy saving lighting system is provided. The distributed node type energy-saving lighting system has at least two road lighting devices. In other words, each road lighting device and its light source serve as a node in the system, and the nodes are spatially separated from each other, that is, distributed. Arranged and interconnected, for example by means of a method as will be explained in more detail below, so that each road lighting device (together with its light source) acts as a relatively independent and associated node. node. Wherein each road lighting device is connected to a respective light source and has a power module, and

Each road lighting fixture also includes:

a power output module coupled to the light source;

a central control unit for controlling road lighting;

among them,

The central control unit identifies the instruction code, and

among them,

The central control unit recognizes that the instruction code contains a broadcast touch from the moment the trigger instruction code is included. Within the delay period,

The power output module places the light source in a normal illumination state under the control of the central control unit. According to a preferred embodiment of the invention, the system is constructed by at least two road lighting devices according to the invention in such a way that the distance between each road lighting device and at least one other road lighting device Less than the communication distance, that is, each road lighting control device is at least within the communication range of at least one other road lighting device. This ensures that each road lighting device is capable of communicating with at least one other road lighting device. For example, when a road lighting device issues broadcast information including a trigger instruction code, the communication module of the "at least one other road lighting device" (because the distance between them is less than the communication distance, or they are in communication with each other) The broadcast information is received, whereby the communication module receiving the broadcast information decodes the received broadcast information and transmits the command code to the central control unit, and the central control unit identifies the command code. And perform the appropriate controls.

Thus, according to the present invention, when the sensor trigger signal is active and/or the command code contains a trigger command code, the central control unit controls the power output module to cause the light source to be in a normal illumination state, that is, if the light source is originally in a standby state, It will be switched to the normal illumination state; if the light source is originally in the normal illumination state, the normal illumination state is maintained; in the scope of the present invention, the normal illumination state refers to a state of illumination according to a preset power, the advance The set power can be the rated power of the light source or lower than the rated power of the light source.

That is to say, the working state of the road lighting device according to the present invention at any one time can be judged in such a manner that it is judged whether the time is in any one of the following three periods, and if so, the light source is in normal lighting. State; otherwise, the light source is in a standby state or transitions from a normal illumination state to a standby state. The three time periods are:

The trigger period of the sensor trigger signal;

a sensor trigger delay period from when the sensor trigger signal disappears; and

The central control unit recognizes the broadcast trigger delay period from the moment the trigger instruction code is included in the instruction code.

Thus, by means of the invention a system is realized in which each node in the system (i.e., the unit of each road lighting device and the associated light source) can be illuminated by means of its own sensor, It can be lit by means of broadcast information sent by other nodes. Thereby, it is achieved that when the vehicle is exercising on the road, the street light within a certain distance of the vehicle is illuminated, and This range of illumination follows the movement of the vehicle. In particular, the illumination distance in front of the vehicle is determined in accordance with the line of sight requirements of the vehicle travel. When there is no traffic on the road, the street light is off or in the lowest power consumption state.

By applying the system according to the invention to a road, when the road is idle (no vehicle passing), the node is in a standby state; when the road is used (with a vehicle passing), the node is advanced before the vehicle reaches its vicinity Illuminated, the effect is similar to "advance lighting to meet the arrival of the vehicle", thereby reliably ensuring safety and reducing energy consumption.

According to one aspect of the invention, the sensor trigger delay period and/or the broadcast trigger delay period can be pre-set according to the needs of the user. It is also conceivable that the sensor trigger delay period and/or the broadcast trigger delay period may be dependent on the busy condition of the road. Frequent switching of the state of the light source can be avoided by triggering the delay period and/or the broadcast trigger delay period with a suitable sensor. This helps to extend the service life.

According to a preferred embodiment of the invention, the sensor used comprises a light sensor and/or a wireless receiver, in response to which the vehicle signal is the illumination of the vehicle headlight or the wireless signal transmitted by the in-vehicle wireless transmitter. . This preferred embodiment has the features and advantages as described above.

According to a preferred embodiment of the present invention, only the wireless receiver can be used as the sensor. Correspondingly, the vehicle signal is a wireless signal transmitted by the in-vehicle wireless transmitter, and the effective range is the communication range, and the lighting control device can The light sensor is omitted and the trigger instruction code broadcast does not have to be sent. Likewise, the function of the sensor can be performed by the communication module of the lighting control device. The preferred embodiment has the features and advantages as described above.

According to yet another preferred embodiment of the invention, the sensor has a sensitivity adjustment unit. It may have the features and advantages as described above.

According to a particularly preferred embodiment of the invention, this sensitivity adjustment can be implemented in a manual or automated manner.

According to a preferred embodiment, in the case of a gas discharge lamp, in a normal illumination state, the power output module applies a normal illumination power Pnor to the light source, wherein the normal illumination power Pnor is determined in the following manner:

Pnor = Max (k*p, Psaf),

among them, p is the rated power of the light source,

k is the energy saving coefficient,

Psaf is the lowest safe lighting power of the light source;

In other words, the normal illumination power Pnor takes the larger of k*p and Psaf.

Thus, with the present invention, energy saving performance is improved under the premise of ensuring safety (ensuring that the minimum illuminance is met).

According to a particularly preferred design, the energy saving factor k is proportional to the average of the duty cycle of the sensor trigger signal over a certain period of time. The duty cycle of the sensor trigger signal (ie, the active level) reflects the traffic density information, which is the busy and idle information of the road. The larger the duty cycle, the greater the traffic density and the more busy the road; on the contrary, the smaller the duty cycle, the thinner the traffic and the more idle the road. With the duty ratio as the control parameter, it can be automatically adjusted to the appropriate normal lighting state according to the road use condition. At the same time, the above value method ensures that regardless of the duty ratio, the street light can be satisfied under normal lighting conditions. The minimum illuminance used.

According to a preferred embodiment, in the case of a gas discharge lamp, in the standby state, the power output module applies the standby power Pstby to the light source, wherein the standby power Pstby is a preset value or is determined as follows:

Pstby = Max(Pnor-w*p , Psta)

Where Pnor is the normal lighting power,

w is to adjust the bandwidth,

Psta is the lowest stable lighting power of the light source;

In other words, the standby power Pstby is a preset value or the larger of Pnor-w*p and Psta.

The value of the adjustment bandwidth w can be predetermined and is between 0.1 and 1, preferably between 0.2 and 0.8 and more preferably 0.5. Generally, the larger the adjustment bandwidth w is, the larger the difference between the standby power and the normal illumination power is, and the more obvious the energy saving effect is; at the same time, the larger the adjustment bandwidth w is, the more it is required to return from the standby state to the normal illumination state. The longer the time, the more the light source needs to be illuminated in advance. Therefore, adjusting the bandwidth w needs to match other parameters such as source performance, road usage requirements, communication range, sensor trigger delay period, and/or broadcast trigger delay period. Among them, Psta is pre-settable, for example, preset according to the source data of the light source. Or the user can preset according to the usage requirements. Or force settings through the remote control center.

According to a preferred embodiment, Psta can be adjusted by a central control unit. For example, when the light source is switched from the normal illumination state to the standby state several times (for example, three consecutive times), the light source cannot work stably under the current Psta (ie, when the Psta is supplied to the corresponding light source, the light source does not work). In the standby state, but extinguished, the Psta can be adjusted by the central control unit and recorded accordingly; when the Psta after the height is higher than a certain set value, it can be determined that the bulb aging has occurred. This means that the bulb needs to be replaced. Thus, on the one hand, the service life of the light source is utilized as much as possible, and on the other hand, the problem of excessive power consumption in the standby state of the light source is solved.

According to a preferred embodiment, the power supplied to the source or the current flowing through the source does not mutate when switching from the normal illumination state to the standby state. In contrast, according to the present invention, the power output module reduces the current flowing through the light source in a stepwise decreasing manner, wherein, preferably, the amount of change in each adjustment phase is smaller than the operating current when the light source tends to be stable in the last adjustment phase. 30% of i, (i.e., the amount of change per stage delta I < 30% i); and/or, preferably, the rate of change of current is less than 10% i/s.

According to still another preferred embodiment of the present invention, an LED, an incandescent lamp or a tungsten lamp may be employed as the light source, in which case, in a normal illumination state, the power output module applies normal illumination power to the light source; and/or, The light source can be switched from a normal illumination state to a standby state in which the power output module applies a standby power lower than the normal illumination power to the light source. The standby power may be a relatively small power lower than the normal lighting power, for example for the purpose of maintaining a certain illumination of the street lamp when the road is not running, in order to provide illumination for pedestrians, non-motor vehicles, etc. And it can also play a role in guiding, landscape, etc. Depending on the situation, the standby power can obviously also be zero, that is, the light source is extinguished. This is especially achievable in non-gas discharge lamps. In the case of non-gas discharge lamps, the normal lighting power is rated power or lower than the rated power.

According to a preferred embodiment of the invention, the spacing between adjacent two road lighting devices is less than the communication distance R. This ensures that, under the premise that all nodes are normal, the nodes can forward information one after another, that is, one after another, to propagate broadcast information, for example, to transmit faults contained in the broadcast information. Code, work status information code, and control command code of the remote control center, parameter setting code, and so on. According to a particularly preferred embodiment of the invention, all street lamps are equipped with the road lighting device, whereby the system has the highest energy saving performance and the highest reliability.

In accordance with a preferred embodiment of the present invention, at least one of the road lighting devices is further provided with a remote communication module (i.e., additionally having a remote communication module in addition to the communication module described above). For example, information about a certain node (eg, fault information) can be forwarded "relayed" as described above until reaching a road lighting device with a remote communication module, where the information is sent to Remote Control Center. Preferably, information is transmitted from a road lighting device with a remote communication module to a remote control center using a telecommunications technology such as GSM or cable communication.

According to a preferred embodiment of the invention, the road lighting device with the remote communication module, together with at least one other road lighting device adjacent thereto, constitutes a lighting patch. When discussing the lighting area, for the sake of simplicity, each road lighting device in the lighting area together with its light source is regarded as a piece node of the lighting area, and the piece node includes two types of the piece main node and the sub-segment node, specifically, A road lighting device with a remote communication module, along with its light source, acts as a master node for the zone of the illuminating patch while other road illuminators, together with their light source, act as a zone slave node. The zone is communicated between the nodes and the communication between the zone slaves and the master node (for example, by means of the communication module) by short-distance relay, and the communication between the zone master and the remote control center (for example by means of In the remote communication module) using remote communication technology. In this way, each tile node information can ultimately be passed to the remote control center. Conversely, the information command of the remote control center can also reach the master node of the tile and further transmit to the target tile node or all the tile nodes via the master node of the tile (transmitted by the relay of the communication module of each tile node). In this way, the remote control center can control the master node of the zone by means of the remote communication module and then control the slave nodes.

In accordance with a preferred embodiment of the present invention, each tile node is capable of communicating with at least one other tile node adjacent thereto. Preferably, the setting is such that only the tile master node can communicate with the remote control center. Thus, through the combination of short-range communication technology and remote communication technology, a wide range of long-distance, precise control is realized at a very low cost.

In particular, according to a preferred embodiment of the invention, each road lighting device is assigned an identification code in sequence with reference to the direction of travel. Preferably, the identification code can be included in the broadcast information for transmission between the road lighting devices via the communication module, and/or the identification code can be transmitted to the remote control center via the remote communication module. This makes it possible to locate each node, enabling point-to-point remote intelligent monitoring at low cost. According to a particularly preferred embodiment of the invention, a means of more optimized illumination can be achieved using the identification code. For example, it can be provided that the central control unit identifies the broadcast information received by the communication module, preferably from the downstream trigger signal. This is achieved in that only the light source in front of the vehicle is pre-lighted by means of the broadcast information. This further improves the energy saving effect.

According to a preferred embodiment of the present invention, each road lighting device in the system has a fault analysis module, which can compare a specific parameter with a corresponding parameter in a non-fault state by a certain manner, thereby Determine if there is a fault. In particular, in conjunction with the identification code, the remote control room can accurately determine the specific type and location of the fault that has occurred.

Or, according to another embodiment, the fault analysis module compares the sequence of the identification code included in the broadcast information received by the communication module with a rated sequence, so that the corresponding difference can be determined according to the difference between the two sequences. For example, if a certain identification code is missing from the identification code of the received broadcast information, the node corresponding to the identification code may be faulty, and in particular, the communication module may be faulty.

According to another embodiment, it may be provided that the fault analysis module identifies the moment when the central control unit of the road lighting device identifies the triggering instruction code contained in the broadcast information sent by the nearest downstream road lighting device (for the sake of brevity, simply referred to as "downstream" The broadcast trigger time ", the time difference between the leading edge of the sensor trigger signal of the road lighting device is compared with the rated time difference; or the fault analysis module identifies the central control unit of the road lighting device to the broadcast of the nearest upstream road lighting device The time difference between the trigger instruction code contained in the message (for the sake of brevity, referred to as "upstream broadcast trigger time") and the leading edge of the sensor trigger signal of the road lighting device is compared with the rated time difference. For example, if the downstream broadcast The time difference between the triggering moment and the leading edge of the sensor trigger signal of the road lighting device is too short, even if the downstream broadcast triggering time is earlier than the leading edge of the sensor triggering signal of the road lighting device (ie, the sensor of the downstream road lighting device is earlier than the road) Lighting The sensor is triggered, it is likely that the sensor sensitivity of the road lighting device is too low. According to this, for example, the sensitivity can be adjusted by the sensitivity adjustment function as described above. Additionally or alternatively, A message can also be sent to inform the remote control center that the sensor has failed for replacement or repair.

According to a preferred embodiment of the invention, if one of the broadcast information sequences monitored by a certain road lighting device (referred to as the road lighting device for clarity) is missing the nearest one and/or a plurality of consecutive downstream road lightings The broadcast information of the device, the road lighting device determines the downstream road photo The device communication module is faulty and sends corresponding fault information.

According to a preferred embodiment of the present invention, the fault analysis module can determine the type of fault that occurs in a road lighting device and take corresponding countermeasures: if the communication is faulty, the adjacent road lighting device cannot monitor the broadcast of the patch node, The upstream zone node relays the fault information to the primary node of the zone, and then feeds back to the remote control center via the primary node of the zone, so that the fault can be located; if the communication module of the faulty road lighting device is normal, the road is illuminated. The fault code of the device is relayed to the master node of the tile, and then fed back to the remote control center via the master node of the tile.

According to still another aspect of the present invention, there is provided an operation method for a distributed node type energy-saving lighting system, the distributed node type energy-saving lighting system comprising a plurality of road lighting devices, wherein each road lighting device is associated with a respective light source Connect to form a node,

Moreover, each road lighting device has a power module, characterized in that

Each road lighting device further includes a sensor, a communication module, a power output module and a central control unit, and the operation method comprises the following steps:

a, at a node (hereinafter referred to as a trigger node for simplicity), the sensor transmits a sensor trigger signal to the central control unit of the trigger node when detecting a vehicle signal within the sensor detection range;

b. When the central control unit receives the sensor trigger signal

Controlling the power output module to cause the light source of the trigger node to be in a normal illumination state and causing the communication module of the trigger node to transmit broadcast information, where the broadcast information includes a trigger instruction code, in response to a leading edge of the sensor trigger signal;

c. The communication module of the other nodes located in the communication range decodes the received broadcast information and transmits the instruction code to the respective central control unit, and the central control unit recognizes that the instruction code contains the trigger instruction code, and controls the power output module to make the corresponding The light source is in a normal illumination state and maintains a normal illumination state during a broadcast trigger delay period;

d. At the trigger node, after the sensor trigger signal disappears, the central control unit controls the power illumination state.

An embodiment of the method according to the present invention further includes the following steps: if the sensor triggers the delay period after the sensor trigger signal disappears, the trigger node still does not receive a new sensor trigger signal or includes a trigger instruction code from other nodes. Broadcast information, then the central control unit controls the power The output module causes the light source of the trigger node to enter a standby state.

Therefore, for any node, as long as the sensor trigger signal is valid, the light source is in a normal illumination state, and within a certain period of time after the sensor trigger signal disappears (for example, the sensor trigger delay period), the light source is still In normal lighting state, the length of the sensor trigger delay period can be set according to user requirements. At the same time, for any node, each time the broadcast information containing the trigger instruction code from other nodes is received, if the light source of the node is not in the standby state, it is switched to the normal illumination state and maintained for a certain period of time. (For example, the broadcast trigger delay period), if the light source of the node is originally in a normal illumination state, the normal illumination state is maintained (eg, at least the broadcast trigger delay period is maintained). The normal illumination maintenance time after the sensor trigger signal disappears is different from the normal illumination maintenance time after receiving the broadcast information from the other nodes containing the trigger instruction code, which can be set according to the road use requirements and the light source parameters.

The solution according to the invention is particularly preferred. For example, when a vehicle that is originally traveling on a road stops for a certain reason, the light source in front of the vehicle that is illuminated by the trigger command code in the broadcast information is After the broadcast trigger delay period, the standby state is re-entered, and only the street light within the sensor trigger range maintains a continuous normal illumination state.

An embodiment of the method according to the invention further comprises the steps of: using a light sensor and/or a wireless receiver as the sensor, and wherein the light sensor detects the illumination of the vehicle headlight and the wireless receiver is on the vehicle wireless transmitter The transmitted wireless signal is detected, and preferably includes the step of adjusting the sensitivity of the sensor.

An embodiment of the method according to the invention further comprises the steps of: using a gas discharge lamp, in particular a high pressure sodium lamp, as the light source, wherein

In the normal illumination state, the power output module applies the normal illumination power Pnor to the light source, wherein

Pnor takes the larger of k*p and Psaf,

among them,

k is an energy saving coefficient, and the energy saving coefficient may be a predetermined value. Preferably, the energy saving coefficient is proportional to the average value of the duty ratio of the sensor in a certain period of time,

Psaf is the lowest safe lighting power of the light source;

In the standby state, the power output module applies the standby power Pstby to the light source, wherein, Pstby For the preset value or take the larger of Pnor-w*p and Psta or set the value for the user, where w is the adjustment bandwidth, and the value of w can be given in advance and between 0.1 and 1, Preferably at 0.2

Between 0.8 and more preferably 0.5,

Psta is the most stable lighting power of the light source;

Preferably, Psta can be adjusted by a central control unit.

Wherein, preferably, when switching from the normal illumination state to the standby state,

The power output module reduces the current flowing through the light source in a stepwise decreasing manner, wherein the amount of change delta l of each phase is preferably less than 30% i, and/or the current rate of change is preferably less than 10% i/s, wherein

i is the operating current at which the gas discharge lamp tends to be stable during the last adjustment phase of the corresponding regulation phase.

An embodiment of the method according to the invention further comprises the steps of: using an LED, an incandescent lamp or a tungsten halogen lamp as the light source, wherein

In a normal illumination state, the power output module applies normal illumination power to the light source; and/or, the light source can be switched from a normal illumination state to a standby state,

In the standby state, the power output module applies a standby power that is lower than the normal illumination power (which may be zero when needed, in other words, the light source is extinguished) to the light source.

An embodiment of the method according to the invention further comprises the step of: additionally providing a remote communication module on at least one of the road lighting devices (again, it is also conceivable to integrate the remote communication module as a functional module to the corresponding road In the communication module of the lighting device, the road lighting device with the remote communication module is combined with at least one other road lighting device adjacent thereto to form a lighting zone, and each road lighting device in the lighting zone together with its light source is used as one of the lighting zones a patch node, wherein the tile node includes a tile master node and a tile slave node, the tile master node is served by a road lighting device (and a corresponding light source) with a remote communication module, and the tile slave node is served by other road lighting devices and their light sources. Here, "other road lighting devices" are relative to road lighting devices with remote communication modules, that is, "other road lighting devices" refer to roads with communication modules but without remote communication modules. Lighting device, in other words, in this "other road lighting device" The communication module may also be referred to as "short-range communication module." Here, the information is transferred between the nodes of the area to be propagated throughout the area, and the remote control center controls the master node of the area by means of the remote communication module and further controls the slave node. It is also conceivable to have in each zone A slice slave node can act as a backup master node, that is, if the master zone primary node is damaged, the backup tile master node can perform its function on its behalf.

An embodiment of the method according to the invention further comprises the steps of: each tile slave node communicating with an adjacent at least one other tile slave node, and, preferably, the tile master node and the adjacent at least one other tile region The nodes communicate and communicate with the remote control center.

An embodiment of the method according to the invention further comprises the steps of: operating the lighting zone in a forced mode, an automatic mode or a maintenance mode by means of a remote control center;

In the forced mode, the road lighting device continuously applies rated power or normal lighting power to the respective light sources;

In automatic mode, the light source is controlled by the road lighting device until it receives other control commands from the remote control center;

In the maintenance mode, the road lighting unit responds to the maintenance control commands of the remote control center and/or the mobile service equipment.

An embodiment of the method according to the invention further comprises the step of: assigning an identification code to each road lighting device in sequence with reference to the direction of travel.

Preferably, the identification code is included in the broadcast information to transmit an identification code between the road lighting devices via the communication module and/or to transmit the identification code to the remote control center via the remote communication module.

An embodiment of the method according to the invention further comprises the step of: for receiving the received broadcast information comprising the trigger instruction code, the central control unit identifying the identification code contained therein, preferably only by the identification code When the received broadcast information comes from the upstream road lighting device, the central control unit executes the corresponding trigger command.

An embodiment of the method according to the invention further comprises the steps of: providing a fault analysis module for each road lighting device to facilitate

Performing a self-test on the road lighting device, and/or

Listening to a sequence of broadcast messages, and/or

Timekeeping the sensor trigger signal width of the road lighting device, and/or

Comparing the time difference between the sensor trigger signal leading edge of the road lighting device and the downstream broadcast triggering moment with the rated time difference, and/or,

Comparing the ratio of the first time difference to the second time difference to a set value, among them,

The first time difference is the time difference between the sensor trigger signal leading edge of the road lighting device and the downstream broadcast triggering moment.

The second time difference is the time difference between the upstream broadcast triggering moment and the leading edge of the sensor trigger signal of the road lighting device, and wherein

The downstream broadcast triggering moment refers to the moment when the central control unit of the road lighting device recognizes the triggering instruction code included in the broadcast information sent by the nearest downstream road lighting device, and the upstream broadcast triggering moment refers to the road lighting The central control unit of the device identifies the moment of the trigger command code contained in the broadcast information sent by the nearest upstream roadway illumination device.

Thereby, the failure of the road lighting device is determined, such as a communication module failure, a light source failure, or a sensor failure (e.g., sensor sensitivity is too low).

An embodiment of the method according to the invention further comprises the steps of:

In the broadcast information sequence that is monitored, if the broadcast information of the nearest downstream road lighting device is missing, the local road lighting device generates and transmits information of the communication failure of the downstream road lighting device.

The number of times the effective level of the output of the sensor is less than the width rating is greater than a predetermined statistical ratio, and/or

The number of times the downstream broadcast triggering moment is ahead of the leading edge of the sensor trigger signal of the road lighting device is greater than a predetermined statistical ratio, and/or,

The time difference between the sensor trigger signal leading edge of the road lighting device and the downstream broadcast triggering moment is less than the predetermined time difference is greater than a predetermined statistical ratio, and/or,

The ratio of the time difference between the upstream broadcast triggering moment and the leading edge of the sensor trigger signal of the road lighting device to the time difference between the sensor trigger signal leading edge and the downstream broadcast triggering moment of the road lighting device is greater than a set value, and / Or

The road lighting device sequentially monitors the broadcast information including the trigger instruction code sent by the nearest upstream road lighting device and the nearest downstream road lighting device, and the sensor of the road lighting device has no trigger signal output.

Then increase the sensitivity of the road lighting device and / or send fault information. Preferably, the fault information is sent only when the sensitivity of the road lighting device cannot be increased.

The method according to the invention also has the corresponding road lighting device and distribution as above The various advantages described in the node-type energy-efficient lighting system.

According to an aspect of the present invention, an intelligent management communication method for a distribution node, particularly for a road illumination distribution node, is provided.

among them,

The communication area is formed by at least two distribution nodes having communication modules, and the effective distance of the communication module is the communication distance;

In the communication chip area, there is at least one other distribution node in the communication range of each distribution node ->

among them,

The communication range of the distribution node is preferably a circle whose center is the center of the corresponding distribution node and whose communication distance is a radius;

among them,

Any two distribution nodes within the communication zone can communicate with each other directly and/or through other distribution nodes for information communication.

among them,

At least one distribution node additionally has a remote communication module;

The remote control center can communicate with distributed nodes with remote communication modules and with other distribution nodes.

It is conceivable that the intelligent management communication method according to the present invention is not limited to distributed nodes composed of road lighting devices but can be used for other distributed nodes, such as distributed nodes constituted by monitoring devices.

According to a preferred embodiment of the present invention, a communication method for remote intelligent management of road lighting is provided.

The road lighting remote intelligent management communication method is implemented by a communication area composed of at least two road lighting intelligent management communication nodes, wherein each road lighting intelligent management communication node has a power supply module, and

Each road lighting intelligent management communication node also includes:

Central controller connected to the street light

a communication module connected to the central controller, preferably, the communication module is a short-distance communication module, and In the communication area, the distance between the adjacent two road lighting intelligent management communication nodes is smaller than the effective communication distance of the communication module of the road lighting intelligent management communication node, and it is conceivable that the road lighting intelligently manages the communication module of the communication node for effective communication. The distance is greater than the minimum spacing of the street lamps. Preferably, the road lighting intelligent management communication node is disposed for each street lamp within the coverage of the area, and in the communication area, at least one of the road lighting intelligent management communication nodes additionally Setting a remote communication module so that the road lighting intelligent management communication node with the remote communication module acts as a master node of the tile and the other road lighting intelligent management communication node acts as a segment slave node, where

"Other road lighting intelligent management communication node" is relative to the road lighting intelligent management communication node with remote communication module, that is, "other road lighting intelligent management communication node" refers to the short-distance communication module but not The road lighting intelligent management communication node with the remote communication module, in other words, in this "other road lighting intelligent management communication node", the communication module can also be called "short distance communication module". Here, the information is forwarded between adjacent block nodes, and is transmitted through the entire area by means of "relay transfer". The remote control center communicates with the main node of the area by means of the remote communication module, thereby implementing communication with the slave node. It is also conceivable that at least one tile slave node in each tile region can serve as a backup tile master node, that is, if the master region master node fails, the backup tile master node can perform its function on its behalf, thereby

Through the combination of short-distance communication and long-distance communication, long-distance and wide-range communication can be realized at a very low cost, thereby realizing effective low-cost remote intelligent management.

DRAWINGS

Figure 1 is a schematic illustration of an embodiment of a road lighting device in accordance with the present invention;

1 is a schematic diagram of an embodiment of a distributed node type energy-saving lighting system of the present invention; FIG. 3 is a schematic diagram of a control strategy for switching a gas discharge lamp from a normal illumination state to a standby state;

Figure 4 is a schematic diagram of a sensor trigger signal;

Figure 5 is a recovery characteristic curve of a high pressure sodium lamp;

Figure 6 is a schematic diagram for determining sensitivity when only one node is operating alone;

Fig. 7 is a schematic diagram for determining sensitivity when a plurality of nodes constitute a system according to the present invention. Reference mark: 101 sensor

102 communication module

103 central control unit

104 power output module

1 11 light source

1 12 power module

Rsen sensor detection range

Rcom pass 4 words range

501 10%P recovery curve

502 20%P recovery curve

503 30%P recovery curve

504 50%P recovery curve

505 cold start curve

Ambient value of 500a 10%P

500b 20%P illuminance value

500c 30%P illuminance value

500d 50% P illuminance value

500e 100% P illuminance value. Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings.

1 shows an embodiment of a road lighting device according to the invention, which is connected to a light source 111 and has a power module 112, wherein the road lighting device further comprises a sensor 101, a communication module 102, a power output module 104 and a central unit. The control unit 103 is configured to detect a vehicle signal in a sensor detection range Rsen (for example, a circle centered on the sensor and a detection distance r of the sensor), and send the detection result to the central control unit 103, the communication module The communication module 102 receives the broadcast information and transmits the broadcast information to the central control unit 103. The central control unit 103 controls the power output module 104 and the light source according to the detection result of the sensor 101 and the broadcast information. 11 1 working status.

Figure 2 shows a distributed node type energy efficient lighting system comprising at least one node, each The node includes a road lighting device and a light source 111 as shown in FIG. Taking the node A as an example, the sensor 101 is configured to detect a vehicle signal in the sensor detection range Rsen and send the detection result to the central control unit 103, wherein the sensor detection range Rsen is generally centered on the sensor 101 of the node A. A circle with a radius r of the detection distance r. The central control unit 103 is used to control the power output module 104 and thereby control the operating state of the light source 11 . The communication module 102 is configured to send or receive broadcast information in the communication range Rcom, where the communication range Rcom is generally a circle centered on the communication module 102 of the node A and having a communication distance R as a radius. The communication module 102 receives the broadcast information and transmits it to the central control unit 103 to control the power output module 104 and the light source 111.

As shown, when the sensor 101 of one of the nodes (for example, node A) detects that there is a vehicle signal in the sensor detection range Rsen, it sends a trigger signal to its central control unit 103, and the central control unit 103 controls through the power output module 104. The light source 111 enters a normal illumination state, and at this instant, a piece of broadcast information is transmitted through the communication module 102, and other nodes within the communication range Rcom (according to a preferred scheme, it is also conceivable only in the vehicle forward direction, in the communication range Rcom After receiving the broadcast information, the communication module 102 of the other nodes within the control unit controls the corresponding light source 11 to enter a normal illumination state.

For node A, when the sensor 101 does not detect the vehicle signal in the sensor detection range Rsen, the light source maintains the normal illumination state during the sensor trigger delay period; during this period, if no new trigger signal is received, the signal is not received. Up to the triggering broadcast information, after the sensor triggers the delay period, the central control unit 103 controls the light source 11 to enter the standby state.

Thus, when the road is idle, the node is in a standby state, and when a vehicle passes, the node returns to the working state, thereby ensuring the best energy saving effect and a safe line of sight. Advantageously, by controlling the lighting of the nodes with the sensor 101, a good energy saving effect is achieved, and more advantageously, the use of the communication module 102 is such that it is further away from the vehicle than the node controlled only by the sensor 101. The nodes at the place are also "pre-lighted" with a certain amount of advancement, thereby reliably ensuring the line of sight necessary for the vehicle to travel. Usually, the detection distance r and the communication distance R are determined in accordance with the required illumination requirement, the characteristics of the light source, and the limited vehicle speed of the road.

In short, the working principle of the system shown in FIG. 2 can be briefly described as follows: A circle with radius r shows the sensor detection range Rsen of the sensor 101 of the node, and a circle with radius R shows the communication range Rcom of the communication module 102. When the vehicle travels along the road traveling direction to reach the 0 o'clock position, the node A whose front distance is equal to r is triggered, and the central control unit 103 of the node A controls the power output module 104. In turn, the light source of the control node A enters a normal illumination state, and at the same time, an instruction message is broadcast through the communication module 102. All nodes within the communication range Rcom enter a normal illumination state in response to the received broadcast information, but they do not broadcast information at this time. Thus, all of the street lights in the range corresponding to M, to M are illuminated (as explained above, it can also be set as follows, that is, only the street lamps of the range 0 to M are lit). Let the distance between adjacent nodes (that is, the distance between street lamps) be 1. When the vehicle continues to drive forward 1, node B is triggered, node B broadcasts an instruction message, and nodes B to M maintain normal illumination state without being shown. Node N (i.e., the next node of node M) switches from the standby state to the normal illumination state. As the vehicle progresses, the front node is constantly illuminated, and the street light that is always in the range of r+R is always (at least) illuminated. When the vehicle leaves, the sensor 101 of the node A does not receive the trigger signal, and the communication module 102 of the node A does not receive the node broadcast signal, then the appropriate, pre-settable duration (for example, the sensor trigger delay period) The central control unit 103 then puts the node into a standby state, the street light is turned off or operates at low power consumption. What we see is: When the vehicle travels to point O, the streetlights between M and M are lit, providing sufficient illumination. As the vehicle goes ahead, the streetlights are constantly lit, M, before (or, Depending on the implementation, the streetlights before 0 are constantly extinguished (or dimmed).

Preferably, identification codes are provided for the respective nodes, and the identification codes are preferably consecutively numbered in the driving direction. Thereby, the nodes can communicate through a certain communication protocol, that is, the nodes constitute a communication link, thereby efficiently and conveniently positioning each node. Particularly preferably, a short-distance communication mode is adopted between adjacent nodes, and more preferably, a remote communication module is provided for some of the nodes, and the node can communicate with the adjacent node in a short-distance communication manner, and can also adopt a remote communication method. Communicate with the remote control center. With this inventive design of the invention, an extremely large communication range is guaranteed at a low cost. If each node uses remote communication, the same positioning function as above can be achieved, but the cost will be quite high.

The sensor 101 can include a light sensor that receives a vehicle light signal and/or can include a wireless receiver for receiving wireless signals transmitted by the vehicle's in-vehicle wireless transmitter.

Since the sensor 101 is aged after being used for a long time and may be contaminated by dirt, in order to ensure the accuracy of the detection, it may be set as follows, that is, the sensitivity of the sensor 101 is adjustable. For example, it can be provided that the central control unit 103 comprises a sensitivity automatic adjustment module for adjusting the sensitivity of the sensor. This adjustment can be done manually (remote setting) or automatically.

Each communication module 102 within the communication range Rcom communicates via a wireless signal. Of course also It is conceivable to use a power line carrier for communication.

The light source 1 1 1 may be an incandescent lamp, a tungsten halogen lamp, an LED lamp, or a gas discharge lamp.

In order to implement system management, a plurality of nodes may be used to form a lighting patch, where each node is referred to as a tile node of the lighting patch. A tile node includes at least two types, that is, a tile primary node and a slice secondary node. The master node of the tile is served by a road lighting device with a remote communication module and its light source, and each road lighting device without a remote communication module acts as a zone slave node along with its light source. Preferably, a tile master node is provided for each of the illumination zones. Of course, it is also conceivable under certain conditions that each lighting zone is provided with more than one main node, for example two zones. Preferably, only the tile master node is capable of communicating with the remote control center, e.g., via GSM.

Referring to FIG. 2, an operation method for a distributed node type energy-saving lighting system according to the present invention includes the following steps:

a. When the sensor 101 of the node A detects the vehicle signal in the sensor detection range Rsen, the sensor 101 sends a trigger signal to the corresponding central control unit 103, and the central control unit 103 controls the corresponding light source 1 1 through the power output module 104. Enter normal lighting state;

b. The communication module 102 of the node A sends the broadcast information, and after receiving the broadcast information, the communication module 102 of the other nodes B, C, D...M in the communication range Rcom controls the respective light sources 1 1 1 to enter the normal illumination. State

c. When the vehicle passes the street lamp spacing 1, it enters the next node, that is, the sensor detection range of the node B. Then, the node B controls the light source 1 1 1 of the node B to enter the normal lighting state (or, if it is already in the normal lighting state, The normal illumination state is maintained, and the communication module 102 of the node B controls the other nodes C, D, ... M in the communication range Rcom to maintain the normal illumination state and the next node N of the node M enters the normal illumination state;

d, sensor of node A 101 does not detect the sensor detection range when there is a vehicle signal in Rsen

(For example, when using a wireless receiver, the sensor detection range Rsen is the circle of radius r shown in the figure, and the left semicircle of the circle of radius r when the light sensor is used), it can be triggered by a pre-settable sensor. After the delay period, the central control unit 103 of the node A controls its light source 11 1 to enter the standby state; according to another scheme, it is also conceivable that the sensor 101 of the node A does not detect the vehicle signal and the node is within the sensor detection range Rsen. A communication module 102 does not detect the communication range Rcom (at When the communication range Rcom is a circle having a radius R in FIG. 2, the central control unit 103 of the node A controls the light source 11 1 to enter the standby state after the sensor triggers the delay period.

Thereby, the node at the front distance r+R of the vehicle sequentially enters the illumination state, and the node behind the vehicle enters the standby state after a certain time.

According to the present invention, the fault of the node can be located, and the type of the fault can be judged. Specifically, when a node fails, if it is a communication failure, the neighboring node cannot hear the broadcast of the node. Then, the upstream node of the failed node transmits the fault information to the primary node of the tile and feeds back to the remote control center through the primary node of the tile to locate the fault; if the communication module 102 of the faulty node is normal, the fault code of the node is The "relay" communication is passed to the master node of the tile, and then sent from the master node to the remote control center through the remote communication module.

According to one aspect of the present invention, for each node (e.g., node A), at least one other node exists within a communication range Rcom (e.g., a circle of radius R in Fig. 2) centered on it. Then, for example, for each node (for example, node A), there is another node in the communication range Rcom centered on it. At this time, the relay communication can be performed all the time, but only if it is ensured that each The communication modules 102 of the nodes are not faulty. Preferably, for each node (e.g., node A), there is more than one other node in the communication range Rcom (e.g., the circle of radius R in Fig. 2) centered on it. Thus, even if the communication module 102 of the node B fails, the relay communication can continue through other nodes, such as C, D, etc., thereby greatly improving the system's anti-fault capability. In other words, the communication link of the subsequent node is blocked only when a continuous communication module with a length longer than the communication distance R has failed. The probability of this happening is obviously very low. Even if this is the case, subsequent nodes can still perform road lighting functions.

According to a preferred embodiment of the invention, the sensitivity can be evaluated in the following manner:

When the trigger level generated by the sensor 101 of a node is less than a predetermined value, the sensitivity of the sensor of the node is too small.

Alternatively, when a node monitors that the next node broadcasts before the node or the next node broadcasts with the local node sensor 101, the trigger level interval is less than a predetermined value, then the sensitivity of the node sensor is too small.

Alternatively, when the ratio of the triggering level leading edge interval value of the previous node broadcast and the local node sensor 101 to the triggering level leading edge value of the local node sensor 101 and the next node broadcast time interval value is greater than a predetermined value, the sensitivity of the node sensor is too small. . In the above method of judging the sensitivity of the sensor, in order to avoid misjudgment, when a certain statistical value appears and a plurality of methods are combined, it is confirmed that the sensitivity is too low. The sensitivity auto-adjustment module raises the sensitivity of the sensor 101.

Specifically, the manner in which the sensor sensitivity is adjusted can be more clearly understood from Figures 6 and 7. As shown in Figure 6, when only one node is operating alone, it has the ability to automatically determine and adjust sensitivity. Specifically, taking the light sensor as an example, the maximum speed of the road design is V, and the vehicle traveling at the speed V reaches the node a. The sensor at the node c has already been triggered, that is, the effective level is output. The effective level is maintained until the vehicle crosses the node c, that is, the duration of the effective level is Ta; under the same condition, if the sensor sensitivity of the node at the node c decreases, the sensor at the node c when the vehicle travels to the node b Only triggered, the corresponding effective level length is Tb, obviously Tb < Ta. It can be seen that the length T of the effective level can indicate the magnitude of the sensor detection distance, that is, the sensitivity of the sensor. A short T indicates that the sensitivity is too low. Of course, an overspeed vehicle can interfere with the equipment, so when a certain amount of statistical value indicates that T is too short within a certain time range, the device confirms that the sensor sensitivity is too low.

Further, when a plurality of nodes constitute a system according to the present invention, it is also possible to comprehensively determine whether the sensor sensitivity is too low in combination with the following methods:

In FIG. 7, the traveling direction of the vehicle is from left to right. When all the sensors are normal, the sensors at the node cl, the node c2, the node c3, and the node c4 are sequentially triggered, and the node cl, the node c2, the node c3, The communication module at node c4 issues a broadcast in sequence, then if node c3 listens to the broadcast of node c4 before its sensor is triggered (listening to the broadcast of node c4 means that the sensor of node c4 is triggered because the broadcast information is at the sensor The leading edge of the trigger signal is sent), indicating that the sensor sensitivity of node c3 is too low. Similarly, if the time interval from the trigger of the node c3 sensor to the communication module of the node c3 listening to the broadcast information of the node c4 is too small, it indicates that the sensor sensitivity of the node c3 is too low.

Similarly, if the node c3 listens to the time interval T2-3 at which the broadcast of the node c2 is triggered to the local node c3, the ratio of the time interval T3-4 that the node c3 is triggered to the broadcast of the broadcast of the node c4 by the node c3 (ie, If T2-3: T3-4) is too large, it can be judged that the sensor sensitivity of node c3 is too low.

According to one embodiment, most of the existing street lamps use a high pressure sodium lamp as the light source 1 11 , and the high pressure sodium lamp takes a long time from startup to rated operation, as shown in FIG.

In addition, high pressure sodium lamps have the following operating characteristics: 1, the startup time is long. It takes several minutes for the cold lamp to start to stabilize. 2. The working state of the lamp cannot be changed rapidly. When the voltage of a few volts jumps (down), the lamp will go out. 3. The start-up and turn-off of the lamp has a great influence on its life. Frequent opening and closing will greatly shorten the service life of the lamp.

The above three problems must be solved when the high-pressure sodium lamp is subjected to energy-saving dimming control. For this reason, according to the invention, it is stipulated that: 1. During the use process, the lamp is not powered off, but the control lamp enters the corresponding low-power working state. , the lamp is always activated, so that it can quickly switch to normal working state, solving the problem of long cold start time. 2. Switch the lamp to the state in advance and return to the appropriate illuminance requirement before the vehicle reaches the node. This will solve the problem of light work gradual change. 3. During use, the lamp always works in different energy consumption states instead of opening and closing, so it will not have a big impact on its life.

In general, the recovery of a high-pressure sodium lamp from a low-power state to a rated operating state is called a recovery characteristic. To ensure that the road has sufficient illuminance to meet the standard requirements when dimming the high-pressure sodium lamp, it is necessary to study this recovery characteristic. And adopt the corresponding control strategy. Figure 3 shows the recovery characteristics of a brand of 400W high pressure sodium lamp. 10% P represents the power consumption value of 10% of the rated (nominal) power consumption, the same. 100% P is the nominal power consumption value.

For example, referring to Figure 3, abd is an adjustment phase, and def is another adjustment phase, where ab is the lamp current reduction phase (eg, t, > 3s), bd is the stability and the working phase (eg, t ₂ > 3min), i, i ₂ , i ₃ are the lamp currents in different steady states.

As can be seen from Figure 5, the higher the initial power, the shorter the recovery time. For example, the recovery time corresponding to 10% P is much less than the startup time of the cold lamp. Table 1 shows the time required for lamps of different brands with different nominal powers to recover from lower different power consumptions to 50% P: Table i, Recovery time (unit: second)

According to an embodiment, in order to achieve the purpose of rapid adjustment, when the traffic flow is scarce, The normal lighting power of the high-pressure sodium lamp is 50% P, which is in line with the more energy-saving scheme of the half-power midnight lamp, wherein P is the rated power of the high-pressure sodium lamp, and the standby power is between 10% P and 50% P, for example It is 30% P. In this way, normal lighting can be restored in a short period of time.

In addition, the characteristics of the high-pressure sodium lamp are determined. In order to ensure that the dimming control is not extinguished when the dimming control is performed, the high-pressure sodium lamp is switched from the normal lighting state to the standby state, and the phase change is adjusted. The amount of change in each phase is less than or equal to 30%i. . After a new steady state is established, a new adjustment phase begins. Moreover, during the entire adjustment process, the current change rate is less than or equal to 10% i/s, where i is the operating current when the high pressure sodium lamp tends to be in a steady state in the last adjustment phase of the corresponding adjustment phase.

According to a preferred embodiment, the normal illumination power can be adjusted according to the following manner: For example, when the high level is the active level, when the sensor 101 detects the vehicle signal, it outputs a high level, and vice versa. level. Then, the duty cycle of the output signal of the sensor 101 reflects the traffic density. The higher the duty cycle, the higher the normal illumination power is set, and vice versa. However, even if the duty cycle is low, it is necessary to ensure that the normal lighting power is higher than the minimum safe lighting power Psaf. The minimum safe lighting power Psaf refers to the power that the light source provides at this power can meet the safety requirements. .

According to a preferred embodiment, especially when a high-pressure sodium lamp is used as the light source 111, since the start-up has a certain delay, in order to ensure that the light source 111 of the node has met the illumination requirement when the vehicle travels to a certain node, it is necessary to When the node is reached, the light source 111 is activated in advance (here, the start means to change the light source from the standby state to the normal illumination state). For example, the light source 111 is on standby at 10% P; when a vehicle is traveling on the road, the node illuminated by the vehicle headlight is triggered and its own light source is activated, and the triggered node is at the trigger pulse. The leading edge sends a broadcast message, and the broadcast information includes a triggering instruction, so that when the downstream node receives the broadcast information, the respective light sources enter the normal lighting state (although the vehicle has not yet reached the downstream nodes, the headlights of the vehicle are not yet available). Irradiation to these downstream nodes).

Furthermore, according to a preferred embodiment, the standby power is also adjustable, the principle of adjustment being, for example, ensuring that the light source 111 can operate stably without extinguishing. Specifically, if the light source 111 is turned off at the current minimum power, and this happens continuously for a certain number of times, the central control unit 103 will increase the power of the lowest standby state and record the parameter setting; After the maximum power is turned up, the minimum standby state power that can maintain the non-extinguishing lamp is greater than a certain set value, and then it is determined that the bulb is aging. Preferably, the corresponding fault information can be sent to the remote control center. In addition, according to a preferred embodiment, the street lamp is not energy-savingly adjusted at the entrance of the illumination zone; it is also conceivable that the street lamp, the road sharp bend and the accident-prone road section are not energy-saving.

According to a preferred embodiment, the system according to the invention has the following modes of operation: a forced mode, an automatic mode and a maintenance mode. The remote control center can be used to switch the operating mode, and it is also conceivable that the mobile maintenance device can be used for switching.

When the node receives the forced mode command, it enters the forced mode, and the light source 111 forcibly illuminates with normal illumination power regardless of whether or not the vehicle passes;

When the node receives the automatic mode command or does not receive the control command, it enters the automatic mode, that is, switches between the normal illumination state and the standby state as described above;

When the node receives the service mode command, it enters the maintenance mode and the node responds to the maintenance control commands of the remote control center and/or mobile service equipment.

Furthermore, it is emphasized that all of the features recited in the present invention can be combined in various ways. In other words, the features set forth for the lighting device, system and method with both the sensor and the communication module can likewise be correspondingly used in lighting devices, systems and methods with communication modules without sensors. Application without departing from the scope of the invention. That is to say, it can be envisaged that in the process of upgrading the road, the sensor and the communication module can be combined in the initial stage (or the sensor control unit and the communication control unit jointly trigger), and when the conditions are ripe, , that is, for example, when most of the vehicles are already equipped with suitable wireless transmitting devices, the control can be adopted only by the communication module, that is, the communication module receives the signals emitted by the in-vehicle wireless transmitting device, thereby Achieve the early start of the light source (ie, enter the normal lighting state). Furthermore, it is to be understood that within the scope of the present invention, the communication module may be either a communication module that communicates using wireless signals or a communication module that communicates using power line carriers. Signals transmitted using power lines are also referred to as "broadcast information" within the scope of the present invention.

It can be seen that the present invention achieves at least the following significant advantages: The adjacent node adopts a communication method of short-distance communication relay, so the cost is low, the reliability is high, and the radiation pollution is low; the original ballast and the starter can be directly replaced, No line modification, no increase in construction cost; self-adjustment correction, high system reliability, ensuring stable and reliable system, low maintenance rate; each node can work independently, or can work in groups and automatically work together, also It can be centrally controlled, has strong anti-interference ability, error correction capability, and has great flexibility. Therefore, it can upgrade and upgrade old projects. Building building blocks can be carried out step by step without a large budget, avoiding large budgetary pressures. The above examples are provided by way of explanation of the invention and are not intended to limit the invention. The patentable scope of the invention is defined by the scope of the claims If these other examples have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements that are not substantially different from the literal language of the claims, these other examples are intended to be included in the claims. In the range.

Claims

Rights request

1. A road lighting device, which is connected to a light source and has a power module,

The road lighting device further comprises:

The sensing control unit and the communication control unit are each capable of controlling the light source independently or in combination.

2. A road lighting device according to claim 1, wherein

The sensing control unit sends a sensor trigger signal when the vehicle signal is detected, and the light source is in a normal illumination state during the sensor trigger delay period from the time when the sensor trigger signal is valid and the sensor trigger signal disappears, and

The communication control unit causes the light source to be in a normal illumination state within a broadcast trigger delay period from the moment the triggering of the trigger instruction code is included in the broadcast information;

Preferably, the broadcast information is issued by an in-vehicle wireless transmitter and/or by a communication control unit of another road lighting device.

3. A road lighting device connected to a light source (11 1) and having a power module (112), wherein the road lighting device further comprises

a power output module coupled to the light source (104);

a central control unit (103) for controlling the road lighting device;

a communication module (102) coupled to the central control unit (103), the communication module capable of transmitting and receiving broadcast information within a communication range (Rcom);

The communication module decodes the received broadcast information and transmits the instruction code to the central control unit (103),

The central control unit (103) identifies the instruction code,

among them,

Within the broadcast trigger delay period from the moment when the central control unit (103) recognizes that the instruction code contains the trigger instruction code, The power output module (104) causes the light source to be in a normal illumination state under the control of the central control unit (103), wherein the broadcast information received by the communication module includes broadcast information transmitted by the in-vehicle wireless transmitter.

4. A road lighting device according to claim 3, characterized in that

The roadway illumination device also includes a sensor coupled to the central control unit (103) for detecting vehicle signals within the sensor detection range (Rsen);

The sensor transmits a sensor trigger signal to the central control unit (103) when the vehicle signal is detected, and the communication module transmits the broadcast information including the trigger instruction code in response to the leading edge of the sensor trigger signal under the control of the central control unit (103).

among them,

The broadcast information received by the communication module includes broadcast information transmitted by the communication module of the other road lighting device, the communication module decodes the received broadcast information and transmits the command code to the central control unit (103);

among them,

During the sensor trigger delay period from the time when the sensor trigger signal is valid and the sensor trigger signal disappears, and within the broadcast trigger delay period when the central control unit (103) recognizes that the instruction code contains the trigger instruction code ,

The power output module (104) places the light source in a normal illumination state under the control of the central control unit (103).

5. Road lighting device according to claim 3 or 4, characterized in that the communication range (Rcom) is greater than the sensor detection range (Rsen).

6. A distributed node type energy-saving lighting system, characterized in that it has at least two road lighting devices respectively connected to a light source and having a power module, and

Road lighting fixtures also include:

a power output module coupled to the light source (104);

a central control unit (103) for controlling the road lighting device;

a sensor connected to the central control unit (103) for detecting the sensor range (Rsen) detects vehicle signals; and,

a communication module connected to the central control unit (103) for transmitting or receiving broadcast information within a communication range (Rcom);

among them,

The sensor transmits a sensor trigger signal to the central control unit (103) when detecting the vehicle signal, and the communication module can transmit and receive broadcast information including the instruction code under the control of the central control unit (103), wherein

The communication module transmits broadcast information including the trigger instruction code in response to the leading edge of the sensor trigger signal under the control of the central control unit (103), and the communication module decodes the received broadcast information and transmits the instruction code to the central control unit (103),

The central control unit (103) identifies the instruction code, and

among them,

When the central control unit (103) recognizes that the instruction code contains the triggering instruction code from the time of the broadcast trigger delay period,

The power output module (104) causes the light source to be in a normal illumination state under the control of the central control unit (103).

among them,

Each road lighting device is within the communication range (Rcom) of at least one other road lighting device.

7. The distributed node type energy efficient lighting system of claim 6, wherein the sensor comprises a light sensor and/or a wireless receiver, and wherein the vehicle signal is correspondingly illumination of a vehicle headlight or The wireless signal transmitted by the in-vehicle wireless transmitter preferably has a sensitivity adjustment unit.

The distributed node type energy-saving lighting system according to claim 6, wherein in the normal illumination state, the power output module (104) applies normal illumination power to the light source; The normal illumination power Pnor is equal to k*p, where

p is the rated power of the light source,

k is an energy saving coefficient, and the preset value of the energy saving coefficient is preferably proportional to the average value of the duty ratio of the sensor trigger signal in a certain period of time;

In the standby state, the power output module (104) applies a standby power lower than the normal illumination power to the light source or turns off the light source.

The distributed node type energy-saving lighting system according to claim 6, wherein the light source is a gas discharge lamp, especially a high-pressure sodium lamp, wherein

In the normal illumination state, the power output module (104) applies a normal illumination power Pnor to the light source, wherein

The normal lighting power Pnor takes the larger of k*p and Psaf,

among them,

p is the rated power of the light source,

k is an energy saving coefficient, and the preset value of the energy saving coefficient is preferably proportional to the average value of the duty ratio of the sensor trigger signal in a certain period of time, wherein

Psaf is the lowest safe lighting power of the light source;

In the standby state, the power output module (104) applies the standby power Pstby to the light source, wherein the standby power Pstby is a preset value or takes the greater of Pnor-w*p and Psta, among them,

Pnor is the normal lighting power,

w is the adjustment bandwidth, the value of which can be predetermined and between 0.1 and 1, preferably between 0.2 and 0.8 and more preferably 0.5,

Psta is the lowest stable illumination power of the light source; preferably, Psta can be adjusted by the central control unit (103);

* The power output module (104) reduces the current flowing through the light source in a stepwise decreasing manner, wherein the amount of change delta I of each adjustment phase is preferably less than 30%i, and/or the current rate of change is preferably less than 10%i/s, of which

i is the operating power of the light source when it is in a stable state in the last adjustment phase of the adjustment phase

, 'six

The distributed node type energy-saving lighting system according to any one of claims 6 to 9, characterized in that the distance between adjacent two road lighting devices is the distance between two adjacent street lamps.

The distributed node type energy-saving lighting system according to any one of claims 6 to 9, characterized in that at least one of the road lighting devices further has a remote communication module, road illumination with a remote communication module The device, together with at least one other road lighting device adjacent thereto, constitutes a lighting patch, each road lighting device in the lighting patch together with its light source as a patch node of the lighting patch region, wherein the patch node includes a patch master node and a patch slave node, wherein ,

The main node of the tile is operated by the road lighting device with the remote communication module and its light source, and the segment slave node is operated by other road lighting devices and their light sources, and the remote control center can control the master node of the zone by means of the remote communication module. And then control the slice slave node.

The distributed node type energy-saving lighting system according to any one of claims 6 to 9, wherein each node is capable of communicating with at least one other node adjacent to each other, and information is between adjacent block nodes. Forwarding constitutes a continuous communication link, and preferably, only the tile master node is capable of communicating with the remote control center.

The distributed node type energy-saving lighting system according to any one of claims 6 to 9, characterized in that each road lighting device is assigned an identification code in order with reference to the driving direction, preferably, the identification code Can be included in the broadcast information for transmission between the road lighting devices via the communication module, and/or the identification code can be transmitted to the remote control center via the remote communication module.

The distributed node type energy-saving lighting system according to any one of claims 6 to 13, characterized in that each road lighting device further has a fault analysis module,

Fault analysis module Performing a self-test on the road lighting device, and/or

Listening to a sequence of broadcast messages, and/or

Timekeeping the sensor trigger signal width of the road lighting device, and/or

Comparing the time difference between the sensor trigger signal leading edge of the road lighting device and the downstream broadcast triggering time with a rated time difference, wherein the downstream broadcast triggering moment refers to that the central control unit (103) of the road lighting device recognizes The timing of the trigger instruction code contained in the broadcast information sent by the nearest downstream road lighting device, and/or,

Comparing the time difference between the upstream broadcast triggering moment and the leading edge of the sensor trigger signal of the road lighting device and the time difference between the sensor trigger signal leading edge of the road lighting device and the downstream broadcast triggering moment, and the set value, wherein The upstream broadcast triggering moment refers to a time when the central control unit (103) of the road lighting device recognizes the triggering instruction code included in the broadcast information sent by the nearest upstream road lighting device;

Thereby a fault of the road lighting device is determined, such as a communication module failure, a light source failure or a sensor failure.

The distributed node type energy-saving lighting system according to any one of claims 6 to 13, characterized in that

If the broadcast information of the nearest neighboring one and/or a plurality of consecutive downstream road lighting devices is missing from the broadcast information sequence monitored by the road lighting device, the local road lighting device determines that the downstream road lighting device communication module is faulty and transmits the corresponding accident details.

The number of times the effective level of the sensor output of the road lighting device is less than the width rating is greater than a predetermined statistical ratio, and/or

The time difference between the sensor trigger signal leading edge of the road lighting device and the downstream broadcast triggering time is less than the predetermined time difference is greater than a predetermined statistical ratio, and/or

The time between the upstream broadcast triggering moment and the leading edge of the sensor trigger signal of the road lighting device The ratio of the time difference to the time difference between the sensor trigger signal leading edge and the downstream broadcast triggering moment of the road lighting device is greater than a set value, and/or

The sensitivity adjustment unit determines that the sensor sensitivity of the road lighting device is too low and raises the sensitivity and/or transmits the fault information.

17. An operating method for distributing a node-type energy-saving lighting system, the distributed node-type energy-saving lighting system comprising a plurality of road lighting devices, wherein each road lighting device is connected to a respective light source to form a node.

Moreover, each road lighting device has a power module, characterized in that

Each road lighting device further includes a sensor, a communication module, a power output module, and a central control unit, and the operation method includes the following steps:

a. At the first node, the sensor sends a sensor trigger signal to the central control unit of the node when detecting a vehicle signal within the sensor detection range;

b. When the central control unit receives the sensor trigger signal

Controlling, by the power output module, the light source of the node is in a normal illumination state and causing the communication module of the first node to transmit broadcast information in response to a leading edge of the sensor trigger signal, the broadcast information including a trigger instruction code;

c. The communication module of the other node located in the communication range (Rcom) of the first node decodes and transmits the instruction code to the corresponding central control unit when receiving the broadcast information; the central control unit identifies the instruction code And the central control unit controls the power output module to cause the corresponding light source to be in the broadcast trigger delay period and maintain the normal illumination state when the triggering instruction code is included in the instruction code;

d. At the first node, after the sensor trigger signal disappears, the central control unit controls the power output module to continue to maintain the normal illumination state during the sensor trigger delay period.

18. The operating method according to claim 17, wherein each road lighting device Set

Ability to analyze the monitored broadcast information and/or

Ability to forward and execute instructions from a remote control center, and/or

Ability to forward or repackage fault information from downstream nodes.

The operating method according to claim 17, further comprising the steps of: if the sensor triggers the delay period after the sensor trigger signal disappears, the first node does not receive a new sensor trigger signal. Or the trigger instruction code from other nodes, the central control unit controls the power output module to bring the light source into a standby state.

20. The operating method according to claim 17, further comprising the steps of: using a photosensor and/or a wireless receiver as the sensor, and wherein the photosensor detects the car number, preferably, This includes the steps to adjust the sensitivity of the sensor.

The operation method according to any one of claims 17 to 20, further comprising the steps of: in the normal illumination state, the power output module applies normal illumination power to the light source;

The normal lighting power Pnor is k*p, where

p is the rated power of the light source,

And / or , the light source can be switched from the normal lighting state to the standby state.

In the standby state, the power output module applies a standby power lower than the normal illumination power to the light source or turns off the light source.

The operating method according to any one of claims 17 to 20, further comprising the steps of: using a gas discharge lamp, in particular a high pressure sodium lamp, as the light source, wherein

In the normal illumination state, the power output module applies a normal illumination power Pnor to the light source, wherein Pnor takes the larger of k*p and Psaf,

among them,

k is an energy saving coefficient, and the energy saving coefficient is a preset value or preferably proportional to an average value of the duty ratio of the sensor in a certain period of time, wherein

Psaf is the lowest safe lighting power of the light source;

In the standby state, the power output module applies the standby power Pstby to the light source, wherein Pstby is a preset value or takes a larger one of Pnor-w*p and Psta, where

w is the adjustment bandwidth, the value of w may be predetermined and between 0.1 and 1, preferably between 0.2 and 0.8 and more preferably 0.5,

Psta is the lowest stable illumination power of the light source;

Preferably, Psta can be adjusted by a central control unit;

The power output module reduces the current flowing through the light source in a stepwise decreasing manner, wherein the amount of change delta l of each adjustment phase is preferably less than 30% i, and/or the current change rate is preferably less than 10% i/s, wherein ,

i is the operating current at which the gas discharge lamp tends to be in a steady state during the last adjustment phase of the conditioning phase.

The operating method according to any one of claims 17 to 20, further comprising the steps of: additionally providing a remote communication module on at least one of the road lighting devices to be remotely provided The road lighting device of the communication module, together with at least one other road lighting device adjacent thereto, constitutes a lighting patch area, each road lighting device in the lighting patch area together with a respective light source as a patch node of the lighting patch area, wherein the patch node comprises a patch master node And the slice from the node, where

The main node of the zone is operated by the road lighting device with the remote communication module and its light source, and the zone slave node is operated by other road lighting devices and their light sources, and wherein the remote control center controls the master node of the zone by means of the remote communication module And then control the slice slave node.

The operating method according to any one of claims 17 to 20, characterized in that The method includes the following steps: each of the slice slave nodes communicates with the adjacent at least one other slice slave node, and the information is forwarded between the adjacent tile nodes to form a continuous communication link; and, preferably, the slice master node and the phase At least one tile of the neighbor communicates with the node and communicates with the remote control center.

25. The operating method according to claim 24, further comprising the steps of: operating the lighting zone in a forced mode, an automatic mode or a maintenance mode by a remote control center; wherein, in the forced mode, the road lighting device continuously Applying rated power or normal illumination power to respective light sources;

The operating method according to any one of claims 17 to 20, further comprising the steps of: sequentially assigning an identification code to each road lighting device with reference to the driving direction, preferably, the identification code can It is included in the broadcast information, whereby the identification code can be transmitted between the road lighting devices via the communication module, and/or the identification code can be transmitted to the remote control center via the remote communication module.

The operating method according to any one of claims 17 to 20, further comprising the steps of: providing a fault analysis module for each road lighting device to facilitate

Performing a self-test on the road lighting device, and/or

Listening to a sequence of broadcast messages, and/or

Timekeeping of the sensor trigger signal width of the road lighting device, and/or

Comparing the time difference between the sensor trigger signal leading edge of the road lighting device and the downstream broadcast triggering moment with a rated time difference, wherein the downstream broadcast triggering moment refers to that the central control unit of the road lighting device identifies the nearest neighbor The timing of the trigger instruction code contained in the broadcast information sent by the downstream road lighting device, and/or,

Comparing the time difference between the upstream broadcast triggering moment and the leading edge of the sensor trigger signal of the road lighting device with respect to the sensor trigger signal leading edge and the downstream broadcast triggering moment of the road lighting device The ratio of the time difference between the two is compared with the set value, wherein the upstream broadcast triggering moment refers to that the central control unit of the road lighting device recognizes the triggering command included in the broadcast information sent by the nearest upstream road lighting device. The moment of the code;

Thereby, the failure of the road lighting device is determined, such as a communication module failure, a light source failure, or a sensor failure.

The operating method according to any one of claims 17 to 20, further comprising the steps of:

The time difference between the downstream broadcast triggering moment and the leading edge of the sensor trigger signal of the road lighting device is less than the predetermined time difference, and/or,

The time difference between the upstream broadcast triggering moment and the leading edge of the sensor trigger signal of the road lighting device is greater than the set value relative to the time difference between the sensor trigger signal leading edge and the downstream broadcast triggering moment of the road lighting device, and/or

Then increase the sensitivity of the road lighting device and / or send fault information.

30. A road lighting device, which is connected to a light source and has a power module,

It is characterized in that the road lighting device further comprises a power output module coupled to the light source;

a central control unit for controlling the road lighting device;

among them,

The central control unit identifies the instruction code, and

among them,

When the central control unit recognizes that the instruction code contains the triggering instruction code from the time of the broadcast trigger delay period,

The power output module places the light source in a normal illumination state under the control of a central control unit.

31. The road lighting device of claim 30, wherein the sensor comprises a light sensor and/or a wireless receiver, and wherein the vehicle signal is correspondingly illumination of a vehicle headlight or wireless transmission of the vehicle The wireless signal transmitted by the device, preferably, the sensor has a sensitivity adjustment unit.

32. The road lighting device of claim 30, wherein

In the normal illumination state, the power output module applies normal illumination power to the light source; wherein

The normal illumination power Pnor is equal to k*p, where p is the rated power of the light source,

33. The road lighting device according to claim 30, wherein the light source is a gas discharge lamp, in particular a high pressure sodium lamp, wherein

In the normal illumination state, the power output module applies a normal illumination power Pnor to the light source, wherein

The normal lighting power Pnor takes the larger of k*p and Psaf,

among them,

p is the rated power of the light source,

k is the energy saving coefficient, and the energy saving coefficient is a preset value or preferably proportional to the average value of the sensor trigger signal duty ratio in a certain period of time,

Psaf is the lowest safe lighting power of the light source;

In the standby state, the power output module applies the standby power Pstby to the light source, wherein the standby power Pstby is a preset value or takes a larger of Pnor-w*p and Psta, where

Pnor is the normal lighting power,

w is the adjustment bandwidth, the value of which may be predetermined and between 0.1 and 1, preferably between 0.2 and 0.8 and more preferably 0.5,

Psta is the lowest stable illumination power of the light source; preferably, Psta can be adjusted by a central control unit;

The power output module reduces the current flowing through the light source in a stepwise decreasing manner, wherein the amount of change delta l of each adjustment phase is preferably less than 30% i, and/or the current change rate is preferably less than 10% i/s, wherein , i is the operating current at which the light source tends to be in a steady state during the last adjustment phase of the conditioning phase.

The road lighting device according to any one of claims 30 to 33, wherein the road lighting device further has a remote communication module, and the remote control center can perform the corresponding road lighting device through the remote communication module. control.

35. An intelligent management communication method for distributing nodes, especially for road lighting distribution nodes,

It is characterized in that

The communication area is formed by at least two distribution nodes having communication modules, and the effective distance of the communication module is the communication distance R);

Within the communication area, there is at least one other distribution node in the communication range (Rcom) of each distribution node.

among them,

The communication range of the distribution node is preferably a circle whose radius is the communication distance (R) centered on the corresponding distribution node;

among them,

Any two distribution nodes in the communication zone can communicate with each other directly and/or through other distribution nodes to realize mutual communication;

among them,

At least one distribution node additionally has a remote communication module;