Utility model content
Automation, intelligentized management is lacked in order to solve conventional road lamp illumination, road-light light-source is single, and urban network and the problem such as informatization engineering construction difficulty is large, the utility model provides a kind of intelligent road-lamp, described intelligent road-lamp comprises lamp holder and lamp bracket, described lamp holder is fixedly connected on described lamp bracket top, and described lamp bracket bottom is fixedly mounted on street, described lamp holder comprises embedded central processing unit, lighting source, and the power management module be connected with described embedded central processing unit respectively, lighting control module, light failure detection module, camera module, first wireless communication module, second wireless communication module, first antenna, second antenna, 3rd wireless communication module, internal memory and flash memory module, hard disk, traffic sensor module, encryption/decryption module, smoke detector module, human motion infrared sensor module and alarm module, described lighting control module is connected with described lighting source respectively with described light failure detection module, and described lighting source is connected with described power management module.
Described camera module comprises camera and video processor; Described camera is connected with described video processor; Described video processor adopts plug and play mode to be connected by USB interface and described embedded central processing unit.
Described camera comprises full-view camera and/or directed camera, and described full-view camera and/or directed camera are connected with described video processor.
Described lighting control module is connected with described embedded central processing unit by I2C interface; Described light failure detection module is connected with described embedded central processing unit by SPI interface; Described alarm module comprises buzzer and alarm button; Described buzzer is connected with described embedded central processing unit by GPIO interface; Described alarm button is arranged on described lamp bracket, and is connected with described embedded central processing unit by GPIO interface.
Described first wireless communication module is WiFi AP module; Described WiFi AP module comprises WiFi AP2.4GHz module and WiFi AP 5.8GHz module, and described WiFi AP 2.4GHz module is connected with described embedded central processing unit respectively with described WiFi AP5.8GHz module; Described second wireless communication module is WiFiClient module, and described WiFi Client module is WiFi Client 5.8GHz module, and described WiFi Client5.8GHz module is connected with described embedded central processing unit; Described 3rd wireless communication module is ZigBee module, and described ZigBee module is connected with described embedded central processing unit.
The utility model provides another kind of intelligent road-lamp, and described intelligent road-lamp comprises lamp holder and lamp bracket, and described lamp holder is fixedly connected on described lamp bracket top, and described lamp bracket bottom is fixedly mounted on street; Described lamp holder comprises lighting source; Described lamp bracket comprises embedded central processing unit and the power management module be connected with described embedded central processing unit respectively, lighting control module, light failure detection module, camera module, the first wireless communication module, the second wireless communication module, the first antenna, the second antenna, the 3rd wireless communication module, internal memory and flash memory module, hard disk, traffic sensor module, encryption/decryption module, smoke detector module, human motion infrared sensor module and alarm module; Described lighting control module is connected with described lighting source respectively with described light failure detection module, and described lighting source is connected with described power management module.
Described camera module comprises camera and video processor; Described camera is connected with described video processor; Described video processor adopts plug and play mode to be connected by USB interface and described embedded central processing unit.
Described camera comprises full-view camera and/or directed camera, and described full-view camera and/or directed camera are connected with described video processor; Described lighting control module is connected with described embedded central processing unit by I2C interface; Described light failure detection module is connected with described embedded central processing unit by SPI interface; Described alarm module comprises buzzer and alarm button; Described buzzer is connected with described embedded central processing unit by GPIO interface; Described alarm button is arranged on described lamp bracket, and is connected with described embedded central processing unit by GPIO interface.
Described first wireless communication module is WiFi AP module; Described WiFi AP module comprises WiFi AP2.4GHz module and WiFi AP 5.8GHz module, and described WiFi AP 2.4GHz module is connected with described embedded central processing unit respectively with described WiFi AP5.8GHz module; Described second wireless communication module is WiFiClient module, and described WiFi Client module is WiFi Client 5.8GHz module, and described WiFi Client5.8GHz module is connected with described embedded central processing unit; Described 3rd wireless communication module is ZigBee module, and described ZigBee module is connected with described embedded central processing unit.
The utility model additionally provides a kind of Radio Network System set up by above-mentioned intelligent road-lamp, comprises intelligent road-lamp, street lamp power distribution station, WiFi router, ZigBee router, host computer and street lamp cloud service platform; Described intelligent road-lamp is arranged on street, and is connected with described street lamp power distribution station by cable; Described WiFi router and described ZigBee router are installed in described street lamp power distribution station, and are connected with described street lamp cloud service platform by network; Described host computer is connected with described street lamp cloud service platform by network.
The intelligent road-lamp that the utility model provides and the Radio Network System set up by it, interconnected, the intercommunication, the WiFi that achieve street lighting automation and intelligentized management, the security protection video of road and the real-time monitoring of transport information and automatic alarm, the early warning of fire fire-fighting and automatic alarm and street street lamp get online without being tethered to a cable, for urban network, informationalized construction provide a kind of engineering construction scheme of low cost.
Detailed description of the invention
Below in conjunction with drawings and Examples, technical solutions of the utility model are further described.
Embodiment 1
See Fig. 1 to Fig. 3, present embodiments provide a kind of intelligent road-lamp, this street lamp comprises lamp holder 1 and lamp bracket 2, and lamp holder 1 is fixedly connected on lamp bracket 2 top, and lamp bracket 2 bottom is fixedly mounted on street.Wherein, lamp holder 1 comprises embedded central processing unit 101, lighting source 102 and the power management module 103 be connected with embedded central processing unit 101 respectively, lighting control module 104, light failure detection module 105, camera module, WiFi AP module, WiFi Client module, directional aerial 109, omnidirectional antenna 110, ZigBee module 111, internal memory and flash memory module 112, hard disk 113, traffic sensor module 114, smoke detector module 115, human motion infrared sensor module 117, alarm module 118 and encryption/decryption module 119; Lighting control module 104 is connected with lighting source 102 respectively with light failure detection module 105, and lighting source 102 is connected with power management module 103.
Wherein, embedded central processing unit is 32 MIPS industrial handlers, runs 32 built-in Linux operating systems, supports WiFi b/g/n network communication protocol and WiFi ac network communication protocol.
Wherein, lighting source is combined by 4 groups or 6 groups or 8 groups of LED light sources, often organizes the actual electric power of LED light source and is less than 30W, peak power output 120W, luminous flux 9600-10800 lumen, colour temperature 3000-6500k.When installing street lamp, the LED light source combination of different group quantity can be adopted according to street lighting actual demand.
Wherein, lighting control module adopts CS1630/CS1631 chip, is connected with embedded central processing unit by I2C interface, regulates for switch control rule, brightness regulation and the colour temperature realized LED light source.CS1630/CS1631 chip receives the control command from embedded central processing unit, and this control command is converted to the control signal of LED light source drive circuit.
Wherein, light failure detection module adopts MAX71020 chip, being connected with embedded central processing unit by SPI interface, for monitoring operating current and the operating voltage of LED light source in real time, and the electric current monitored and information of voltage being sent to embedded central processing unit.Such as: when the operating current or operating voltage that monitor LED light source occur abnormal, this abnormal signal is sent to embedded central processing unit by light failure detection module, and embedded central processing unit closes the power supply of LED light source by power management module; Meanwhile, embedded central processing unit generates Trouble Report according to this abnormal signal, and the geographical location information of Trouble Report and the street lamp that breaks down is pushed to street lamp cloud service platform by ZigBee module or WiFi Client module.Street lamp belongs to large power-consuming equipment, and works long hours in severe outdoor environment, makes street lamp job failure frequency higher; When street lamp fault occurs, fault needs the very first time to notify host computer to obtain maintenance in time, ensures traffic safety.
Wherein, camera module comprises camera 106 and video processor 107.Camera comprises full-view camera 1061 and/or directed camera 1062 (as depicted in figs. 1 and 2), for the video of Real-time Collection street panoramic video and/or fixed-direction.Full-view camera is combined by three pick-up lens, can obtain the real-time video in 360 degree of spaces simultaneously.The chip module of full-view camera and directed camera adopts SN9C292A.Video processor adopts based on DSP (Digital Signal Process, Digital Signal Processing) video processing technique of platform, data compression and coding process is carried out to the video of full-view camera and/or directed camera collection, and exports embedded central processing unit to.Video processor and embedded central processing unit adopt plug and play mode to be connected, and are connected with embedded central processing unit by USB2.0/USB3.0.The data encoding format that video processor exports is JPEG/h.264; When video resolution is 1080p, the collection of video processor and transmission speed can reach 30 frames/second.The video data that video processor exports is stored in hard disk by embedded central processing unit, and by ZigBee module or WiFi Client module, video data is pushed to street lamp cloud service platform.When installing street lamp, according to road, actual demand can be installed, choice for use full-view camera or directed camera.The video data of key area (such as: crossing or black spot) and critical period (such as: upper and lower class peak period etc.) can real time propelling movement to host computer; The video information of non-key location and non-key period can temporarily be stored in hard disk, is uploaded to street lamp cloud service platform, effectively can reduces offered load like this when night or morning.
Wherein, power management module, for realizing the power supply to LED light source and embedded central processing unit and coupled peripheral hardware, and provides electrical overload to protect to street lamp power supply, road lamp power supply.Alternating current 220V/380V voltage transitions is become DC voltage 5V/3.3V and 24V by power management module, powers respectively to embedded central processing unit and coupled peripheral hardware (such as: ZigBee module, camera module etc.) and LED light source.
Wherein, WiFi AP module comprises WiFi AP 2.4GHz module 1151 and WiFi AP 5.8GHz module 1152.WiFi Client module is WiFi Client 5.8GHz module 116.WiFi AP module and WiFi Client module, for providing Internet access service and setting up street lamp WiFi wireless network.In actual applications, user realizes getting online without being tethered to a cable by WiFi AP 2.4GHz module; WiFi AP 5.8GHz module receives the connection request of the WiFi Client 5.8GHz module of adjacent street lamp, realizes setting up street lamp WiFi bridge coil; WiFi Client5.8GHz module, can connect adjacent street lamp WiFi AP 5.8GHz module and set up WiFi bridge coil, or the street lamp WiFi bridge coil set up is accessed street lamp cloud service platform and internet by connection route device.WiFi AP2.4GHz module is realized by the built-in WiFi chip of MT7620 SoC; WiFi AP 5.8GHz module and WiFiClient 5.8GHz module are realized by two panels MT7620U module respectively.MT7620U module is connected with embedded central processing unit by USB2.0.The WiFi AP 5.8GHz information of road lamp network installed by street lamp near being obtained by WiFi networks scanning, and be connected to the strongest street lamp WiFi AP 5.8GHz focus of neighbouring signal.If network failure occurs the WiFi AP 5.8GHz that this street lamp connects, so this street lamp can rescan and selects and be connected to the strongest WiFi AP 5.8GHz focus of neighbouring signal, can ensure the stability of road lamp network like this.
Wherein, omnidirectional antenna is used for WiFi AP 2.4GHz module, provides Signal transmissions for realizing wireless Internet access; Directional aerial is used for WiFi AP 5.8GHz module and WiFi Client 5.8GHz module, sets up WiFi bridge coil realize Signal transmissions for street lamp.The signal transmitting and receiving direction of directional aerial is the direction, router place being arranged on street lamp power distribution station, can be conducive to reducing the interference of getting online without being tethered to a cable between communication and the communication of street lamp safety monitoring like this, and be conducive to improving street lamp networking scale and traffic rate.In actual applications, omnidirectional antenna and directional aerial meet IEEE 802.11a/b/g/n/ac communication standards mandate, antenna gain to arrange in satisfied 100 meters traffic rate between two street lamps and is not less than 30Mbps, a street street lamp networking quantity is no less than 50 street lamps, and street lamp total networking distance in street is no less than 2500 meters.
Wherein, ZigBee module sets up street lighting net control, for realizing monitoring to street lighting and control and management.ZigBee node routing function all supported by every street lamp, and street street lamp can set up extensive Lighting control ZigBee-network.Compared to WiFi network, ZigBee-network has that network speed low (< 700kbps), transmission range are long, network stabilization and the anti-interference feature such as by force.Same street street lighting controls ZigBee-network networking capability and is greater than 50 street lamps, and the total distance of accessible networking is greater than 5000m.ZigBee module can adopt SiLabs EM357 network coprocessor or TI CC2531, runs ZigBee Light Link and HomeAutomation agreement.ZigBee module is connected with embedded central processing unit by USB or UART.Street lighting controls ZigBee-network, by WiFi/ZigBee router access street lamp cloud service platform and internet, and realizes two-way communication with host computer.In addition, WiFi bridge coil is as backup network during street lighting control ZigBee-network fault; When the ZigBee-network of any street lamp breaks down, the monitoring of street lighting and controlling functions realize by WiFi bridge coil.This network backup design ensure that stability and the reliability of street lighting network.Street lamp receives PC control order by ZigBee or WiFi network, or the control command of automatic acquisition street lighting control software design, and control command is converted to corresponding CS1630/CS1631 and control drive singal and realize switch to LED light source, brightness, color, the control of colour temperature and adjustment.
Wherein, traffic sensor module adopts LDV (LDV, Laser DopplerVelocimetry), be connected with embedded central processing unit by SPI hardware interface, for monitoring street car travel speed to judge the congestion of Current traffic.In addition, traffic sensor module can also be implemented to link with camera, thus the video of comprehensive seizure violation over-speed vehicles and image information.
Wherein, internal memory and flash memory module are connected with embedded central processing unit by data/address bus.Internal memory adopts Winbond 128bytes industry internal memory, for (SuSE) Linux OS and street lamp application program provide running space.Flash memory adopts 32 Mbytes industry flash memories, for storing (SuSE) Linux OS, street lamp application program and street light allocation information etc.Flash memory adopts double copies start up system, and the upgrading of rotation storage system firmware.
Wherein, encryption/decryption module is used for being encrypted/decryption processing to the access of street lamp key message.Street lamp key message mainly comprises router related information, host computer information, cloud service related information, security alarm video and image information etc.Encryption/decryption module can adopt safety chip, such as Neowine ALPU-C module, is connected with embedded central processing unit by I2C hardware interface.
Wherein, alarm module comprises buzzer (not shown) and alarm button 6, after receiving the warning triggering signal from outside or inside, and alarm signal of sounding.Buzzer is connected with embedded central processing unit by GPIO interface, adopts RE46C100 buzzer control module; Embedded central processing unit realizes buzzer Sound control by control GPIO voltage and frequency of supply.As depicted in figs. 1 and 2, alarm button 6 is arranged on lamp bracket, is connected with embedded central processing unit by GPIO interface; When push for emergency button time, embedded central processing unit receives the triggering signal that alarm button sends, and makes logical response to this triggering signal, triggers buzzer and to sound warning.
Wherein, smoke detector module adopts MC 145010 chip, is connected, for detecting in real time the smog of street lamp surrounding environment by GPIO interface with embedded central processing unit; When detecting that smokescope is greater than smokescope preset value around, by informed embed formula central processing unit, embedded central processing unit receives this notice and makes logical response, triggers buzzer and to sound warning.
Wherein, human motion infrared sensor module adopts HC-SR501 module, is connected, for the movable signal of human body/object by SPI interface with embedded central processing unit; The infrared emission adjustable angle of HC-SR501 module, launches half-angle at 5 ~ 60 degree; When human body/object movable signal being detected, by informed embed formula central processing unit, embedded central processing unit makes logical response process, such as: trigger buzzer and to sound warning.
Fig. 4 is the external structure schematic diagram of the intelligent road-lamp lamp holder shown in Fig. 1, and its outside mainly comprises road lamp power supply mouth 3, astronomical cycle hole 4, traffic sensor module installing hole 5.
Embodiment 2
Present embodiments provide another kind of intelligent road-lamp, this street lamp is made up of lamp holder and lamp bracket, and lamp holder is fixedly connected on lamp bracket top, and lamp bracket bottom is fixedly mounted on street.Wherein, lamp holder comprises lighting source, and lamp bracket comprises embedded central processing unit and the power management module be connected with embedded central processing unit respectively, lighting control module, light failure detection module, camera module, WiFi AP module, WiFi Client module, directional aerial, omnidirectional antenna, ZigBee module, internal memory and flash memory module, hard disk, traffic sensor module, smoke detector module, human motion infrared sensor module, alarm module and encryption/decryption module; Lighting control module is connected with lighting source respectively with light failure detection module, and lighting source is connected with power management module.
The function of the lighting source described in the present embodiment, embedded central processing unit, power management module, lighting control module, light failure detection module, camera module, WiFi AP module, WiFi Client module, directional aerial, omnidirectional antenna, ZigBee module, internal memory and flash memory module, hard disk, traffic sensor module, smoke detector module, human motion infrared sensor module, alarm module and encryption/decryption module, connected mode, information transmission mode and chip model are identical with embodiment 1, and the present embodiment repeats no more.
It needs to be noted: embodiment 1 and the various functional modules (except lighting source) described in embodiment 2, can according to designing requirement, being arranged in intelligent road-lamp lamp holder and/or lamp bracket of any combination.Embodiment 1 and embodiment 2 are not used in the concrete installation site limiting above-mentioned various functional module.In addition, also can according to the difference of application scenario, suitable deleting is carried out, to meet the practical application of specific occasion to the various functional modules included by the intelligent road-lamp of embodiment 1 and embodiment 2.Such as: when intelligent road-lamp is applied to resident living community, can consider not arrange traffic sensor module.
Compared with conventional road lamp, the intelligent road-lamp that the present embodiment 1 and embodiment 2 provide, has following outstanding advantage:
1) intelligent road-lamp of the present embodiment; only need simply to replace existing road lamp cap or lamp bracket; and adopt wireless network networking; street lighting intellectuality, street security protection networking and scale can be realized without the need to any extra engineering construction; thus greatly reduce urban network, intelligentized construction work cost; efficiently utilize existing street lamp resource, achieve urban network, intelligentized social benefit.
2) extensive road lamp network is set up by wireless network, and by unified Internet access points access street lamp cloud service platform and internet, effectively reduce density and the project installation of street network design (cable network and 3G/4G wireless network), improve the utilization ratio of city wireless network, citizen realize getting online without being tethered to a cable by street street lamp.
3) achieve the intellectuality of street street lamp, Automated condtrol, improve the service efficiency of electric power, saved street lamp power consumption, improve street lamp service life, meet environmental protection, energy-conservation, comfortable social benefit.Achieve streetlight monitoring and fault real-time report, be conducive to the quick solution to street lamp light failure, reduce engineering maintenance cost.
4) achieve camera security protection networking, scale, be conducive to improving social safety grade; Meanwhile, by changing the change of light illumination mode realization to street lamp lighting colour, when not increasing any cost, the security of street traffic is improved.
Embodiment 3
See Fig. 5 and Fig. 6, the present embodiment additionally provides a kind of Radio Network System set up by the intelligent road-lamp described in embodiment 1 or embodiment 2, and this system comprises intelligent road-lamp, street lamp power distribution station, WiFi router, ZigBee router, host computer and street lamp cloud service platform.Wherein, intelligent road-lamp is arranged on street, and is connected with street lamp power distribution station by cable; WiFi router and ZigBee router are installed in street lamp power distribution station, and are connected with street lamp cloud service platform by network (3G/4G network, broadband network, fiber optic network or power line carrier communication network network); Host computer comprises street lighting host computer and street lamp safety monitoring host computer, and street lighting host computer is all connected with street lamp cloud service platform by network with street lamp safety monitoring host computer.
In a particular application, host computer comprises the equipment such as computer, mobile terminal, for realizing the management to intelligent road-lamp, comprise: the long-range open and close of street lamp control, and light dynamic brightness regulates, and light dynamic color regulates, the dynamic aberration of light regulates, street lamp fault Real-Time Monitoring and report, street Real-time Traffic Information is monitored, the real-time security protection video monitoring in street etc.Host computer issues interconnected between X and Y of street, interworking authorization information and signal trigger condition by cloud service platform to WiFi router and ZigBee router.When the street lamp signal of street X changes, this signal automatically pushes to all street lamps of street Y and triggers corresponding respondent behavior, and any intervention without the need to host computer can realize interconnected, the intercommunication of street road lamp network.The street lamp in same street, is connected with ZigBee router with street far-end WiFi router with ZigBee-network by WiFi network, and by router access street lamp cloud service platform and internet.Host computer can send out a warning signal under carrying out street street lamp that engineering construction or road break down, comprise warning classification and warning duration, to realize the brightness of automatic Dominating paths lamp source, color and light source switch flicker frequency, traffic safety noted by prompting pedestrian, vehicle.
The Radio Network System that the present embodiment intelligent road-lamp is set up may be used on resident living community, school, manufacture garden or critical facility distributed areas etc., by the mutual interlock of each part in system, realizes the application of multiple different function, such as:
1) fire-fighting warning function: when the smoke detector module of intelligent road-lamp detects that smokescope exceeds standard, embedded central processing unit can make camera start video capture and analyze candid photograph image, when candid photograph image is the doubtful condition of a fire, trigger buzzer warning, and report the geographical position of intelligent road-lamp to host computer and initiate video communication request, effectively can carry out timely early warning and process to fire situation like this.
2) security protection warning function: human motion infrared sensor module, by regulating emission angle, can realize the monitoring to appointed area scope.Host computer is initiated security alarm to intelligent road-lamp and is detected setting, such as arrange in 00:00 to the 6:00 time period, when detect to have human motion around intelligent road-lamp within the scope of appointed area time, initiatively initiate video communication to host computer, trigger buzzer and carry out audible alarm, thus realize warning function.This security protection warning function is specially adapted to region or the boundary line etc. of critical facility distribution.
3) security alarm function: when intelligent road-lamp is arranged on communication confined area, emergency call function can be realized.When being in an emergency, user presses the alarm button on intelligent road-lamp lamp bracket, triggers buzzer warning, and intelligent road-lamp geographic location is reported to host computer, initiates video communication, realize emergent alarm and communication function to host computer.
4) camera networking interlock: when after the alarm signal that embedded central processing unit receives from smoke detector module, human motion infrared sensor module or alarm module, embedded central processing unit sends video recording open command to camera module, and the real-time video that camera obtains is uploaded to street lamp cloud service platform and host computer; Simultaneously, embedded central processing unit broadcasts linkage request instruction by WiFi AP 5.8GHz module to its place LAN, after other intelligent road-lamps in LAN receive this linkage request instruction by WiFi Client 5.8GHz module, camera module to self sends video recording open command, and forward this linkage request instruction, thus realize camera interlock.
In actual applications, the automatic control of the present embodiment intelligent road-lamp is realized by street lighting control software design, this control software design is built in the flash memory of intelligent road-lamp, automatically adjust for the On/Off to street lighting, brightness, color and colour temperature, thus realize the control of street lamp automation, intellectuality and energy-saving.This street lighting control software design comprises following several functions:
A) have man-machine administration interface, project installation personnel can log in the man-machine administration interface of intelligent road-lamp and operate intelligent road-lamp and manage.
B) write and store the geographical location information of intelligent road-lamp, comprising: longitude, latitude, height above sea level and time zone etc.
C) write and store the on-site current time information of intelligent road-lamp, and periodically from time server acquisition time, upgrading the clock system of intelligent road-lamp.
D) according to the on-site geographical location information of intelligent road-lamp and time, calculate the sunrise of certain date, sunset time and sunrise, sunset completes the required time.
E) obtained the weather information on same day one day by intelligent road-lamp cloud service platform, comprising: air themperature, air humidity, air visibility, mist, haze, rain, snow and wind speed etc.
F) select the sunset of certain date, at sunrise between as time of street lamp open and close, and combine the open and close time of weather information to street lamp obtained from street lamp cloud service platform and revise, realize the Dynamic controlling of street lamp time switch; Such as: when completing to sunset from sunset, street lamp brightness rises to high brightness from low-light level gradually; When completing to sunrise from sunrise, street lamp brightness is reduced to low-light level from high brightness gradually and closes; So not only achieve the Event tourism of street lamp, but also improve street lamp efficiency.
G) according to factors such as season, air themperature, air visibility, real-time times, dynamic adjustments is carried out to the brightness of intelligent road-lamp, color, colour temperature, thus obtain best street lighting effect and the lighting experience of the most comfortable.
The intelligent road-lamp that the present embodiment provides and the Radio Network System set up by it, depart from sunrise, sunset time is to the dependence of Cloud Server, and form the due difference of region location in different regions, simultaneously fully in conjunction with between sunset/at sunrise and air weather information, achieve street lighting automation, intelligentized management, the real-time monitoring of road security protection video and Traffic Information and automatic alarm, the early warning of fire fire-fighting and automatic alarm, and street street lamp is interconnected, intercommunication, WiFi gets online without being tethered to a cable, for urban network, informationalized construction provides a kind of engineering construction scheme of low cost.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.