CN214960232U

CN214960232U - Synchronous flashing system of barrier lamp based on 485 bus

Info

Publication number: CN214960232U
Application number: CN202023310933.0U
Authority: CN
Inventors: 胡军
Original assignee: Shanghai Genuo Zhuhang Light Technology Co ltd
Current assignee: Shanghai Genuo Zhuhang Light Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-11-30
Anticipated expiration: 2030-12-30

Abstract

The utility model relates to a synchronous scintillation system of barrier lamp based on 485 bus is equipped with 485 communication bus, 485 communication bus is equipped with upstream end A and downlink B, upstream end A passes through current signal and connects the barrier lamp, downlink end B passes through voltage signal and connects the barrier lamp, 485 communication bus is connected with local controller through upstream end A and downlink B, the inside clock unit that is equipped with the operation simulation of barrier lamp utensil for the clock count to send clock signal to timer. The utility model discloses increase the ms level time service in original communication signal, realize under the bus the error that the internal system time of all barrier lamps differed at the ms level, guarantee the uniformity of output scintillation. Meanwhile, a unit for carrying out time service synchronization by adopting a GPS signal is omitted in the design of a single barrier lamp, so that the increase in design cost caused by the GPS design and the difficulty requirement on the structure in antenna installation are made up to a certain extent.

Description

Synchronous flashing system of barrier lamp based on 485 bus

Technical Field

The utility model relates to a barrier lamp technical field, concretely relates to barrier lamp synchronous scintillation system based on 485 buses.

Background

In the prior art, in the control process of pulse output and time, the microprocessor is difficult to realize in the control precision of the us-level pulse time and the pulse width, mainly because the conventional us-level time control is realized by adopting a high-precision timer, the system can frequently carry out interrupt switching while realizing the timer by a processor with lower main frequency, the task burden of the microprocessor is heavier, the execution and control operation of other important tasks of the system can not be realized any more, the system only can frequently carry out the interrupt of the timer, meanwhile, the adjustment of the pulse width needs to be controlled while realizing the timer, the parameter setting and the switch execution of the pulse width can not be realized even in the interrupt of the timer operation with heavy burden, the system can not normally realize the target function directly, and a new method for controlling the pulse time and adjusting the pulse width is needed, to solve the above control problems, etc.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model discloses a barrier lamp synchronous scintillation system based on 485 bus for solve the problem that above-mentioned background art exists.

The utility model discloses a following technical scheme realizes:

the utility model discloses a barrier lamp synchronous scintillation system based on 485 bus is equipped with 485 communication bus, 485 communication bus is equipped with uplink end A and downlink end B, uplink end A passes through current signal and connects the barrier lamp, downlink end B passes through voltage signal and connects the barrier lamp, 485 communication bus is connected with local controller through uplink end A and downlink end B.

Furthermore, a clock unit for running simulation is arranged in the barrier lamp and used for counting clocks and sending clock signals to the timer.

Further, the number of the barrier lamps is more than 2.

Furthermore, the local controller is an integrated 4G wireless communication module.

Furthermore, the 485 communication bus is provided with a clock correction module, and all clock data are corrected at random time intervals.

The utility model has the advantages that:

the utility model discloses increase the ms level time service in original communication signal, realize under the bus the error that the internal system time of all barrier lamps differed at the ms level, guarantee the uniformity of output scintillation. Meanwhile, a unit for carrying out time service synchronization by adopting a GPS signal is omitted in the design of a single barrier lamp, so that the increase in design cost caused by the GPS design and the difficulty requirement on the structure in antenna installation are made up to a certain extent.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a circuit schematic diagram of a 485 bus based barrier lamp synchronous flashing system.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The embodiment discloses barrier lamp synchronous scintillation system based on 485 bus as shown in fig. 1, is equipped with 485 communication bus, 485 communication bus is equipped with upstream end A and downstream end B, upstream end A passes through current signal and connects the barrier lamp, downstream end B passes through voltage signal and connects the barrier lamp, 485 communication bus is connected with local controller through upstream end A and downstream end B.

The barrier lamp of the embodiment is internally provided with a clock unit for running simulation, and the clock unit is used for counting clocks and sending clock signals to the timer.

The number of the barrier lamps in this embodiment is more than 2. The local controller is an integrated 4G wireless communication module.

The 485 communication bus of the embodiment is provided with a clock correction module, and all clock data are corrected at random time intervals.

In practical application, the 485 bus broadcast time service mode is adopted to issue ms clock data, the 485 bus communication mode is considered as a half-duplex mode, and if the mode of forcibly sending clock data at regular time is adopted, a bus which is transmitting data is hung, and the whole system is directly paralyzed seriously.

In combination with the above problems, in this embodiment, a manner of sending ms clock data when the inquiry bus is idle is adopted, so that the clock data sent each time is random, and the simulated clock units simultaneously run inside the barrier lamps of the slaves, which can independently count clocks and provide the clocks for the flashing timer, and the clock data broadcasted by the bus can perform ms-level calibration on all clocks inside the slaves at one time at intervals of several tens of seconds or even longer random time, so that not too much bus resources are occupied.

Meanwhile, clock slices in all devices in the whole system are controlled to have ms-level errors, so that the synchronous errors of respective timers during flicker processing are controlled within ms level, in the actual design process, the numerical range of a random ms clock needs to be noticed, and the clock data can not cause correction deviation when being at a critical point.

To sum up, the utility model discloses increase the ms level time service in original communication signal, realize under the bus the error that the internal system time of all barrier lamps differed at the ms level, guarantee the uniformity of output scintillation. Meanwhile, a unit for carrying out time service synchronization by adopting a GPS signal is omitted in the design of a single barrier lamp, so that the increase in design cost caused by the GPS design and the difficulty requirement on the structure in antenna installation are made up to a certain extent.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a barrier lamp synchronous scintillation system based on 485 bus, its characterized in that is equipped with the 485 communication bus, the 485 communication bus is equipped with uplink end A and downlink end B, uplink end A passes through current signal and connects the barrier lamp, downlink end B passes through voltage signal and connects the barrier lamp, the 485 communication bus is connected with local controller through uplink end A and downlink end B, the inside clock unit that is equipped with the operation simulation of barrier lamp lamps and lanterns for the clock count, and send clock signal to timer.

2. The 485-bus-based barrier lamp synchronous flashing system of claim 1, wherein the number of barrier lamps is greater than 2.

3. The 485-bus-based barrier lamp synchronous flashing system of claim 1, wherein the local controller is an integrated 4G wireless communication module.

4. The barrier lamp synchronous flashing system based on 485 bus as claimed in claim 1, wherein the 485 bus is provided with a clock correction module, and all clock data are corrected at random time intervals.