CN202694483U

CN202694483U - Street lamp cable antitheft detection device

Info

Publication number: CN202694483U
Application number: CN2012203207043U
Authority: CN
Inventors: 李峰; 黄振跃; 杨帆
Original assignee: ZHENJIANG ZHITUO INTELLIGENT TECHNOLOGY DEVELOPMENT CO LTD
Current assignee: ZHENJIANG ZHITUO INTELLIGENT TECHNOLOGY DEVELOPMENT CO LTD
Priority date: 2012-07-04
Filing date: 2012-07-04
Publication date: 2013-01-23
Anticipated expiration: 2022-07-04
Also published as: CN102722952B; CN102722952A

Abstract

The utility model relates to a cable antitheft alarm field and discloses a street lamp cable antitheft detection device. The street lamp cable antitheft detection device mainly comprises a master control module and a terminal module. The master control module comprises a master control unit (MCU), an electrical parameter detection submodule, an alternating current detection submodule, a signal switching submodule, a charging/protecting circuit, a lithium battery, save preferences, a controller area network (CAN) bus interface and a 485 bus interface. The terminal module comprises an MCU, an alternating current detection submodule, a signal switching submodule, a charging/protecting circuit, a lithium battery, a CAN bus interface and a 485 bus interface. The street lamp cable antitheft detection device can reliably achieve detection and alarm to guard cables of an illuminating line with complex duty against theft on the conditions of powering on and powering off, and can achieve alarming of lamp stoppage, electricity stealing and leakage and electrical parameter detection comprehensively at the same time. In addition, organic integration of the street lamp cable antitheft detection device and other lighting control systems can be achieved through the CAN bus interfaces and the 485 bus interfaces.

Description

A kind of road lighting cable Anti-theft detection device

Technical field

The utility model relates to the cable anti-theft alarm field, and is particularly a kind of for landscape light in city road lighting cable Anti-theft detection device.

Background technology

Along with the development of China's urban construction, people's economy, culture and living standard improve rapidly, and landscape light in city obtains flourish, have become an important component part of urban construction.Meanwhile, the quantity that is used for the power cable of landscape light in city is also increasing fast, and for light conduits pilferage activity also ferocious sticking up day by day, the antitheft work of related management department becomes difficult, the pilferage activity of frequent occurrence brings many factors leading to social instability to society, has also caused huge economic loss.For this reason, various cable anti-theft alarm systems also arise at the historic moment, and the stolen phenomenon of cable has been played certain effect.Although present existing anti-theft detection method for road lamp cable is a lot, mainly can be summed up as Current and voltage detecting method, Capacitance detecting method and power line carrier communication detection method, wherein Current and voltage detecting method is difficult to realize having a power failure detect, when then requiring to construct, Capacitance detecting method reserves two core cable, otherwise be difficult to implement, and power line carrier communication detection rule is affected by power line interference easily, and then produces false alarm easily.For this reason, patent [CN101937600A] has been invented on a kind of all street lamps in detected circuit and the power impedor of the United Nations General Assembly's resistance, and the method that the magnitude of voltage that utilizes analog to digital converter to measure high-accuracy build-out resistor changes judges whether cable is cut, and can judge rapidly disconnected cable apart from the distance of cable initiating terminal, its deficiency mainly is all to want the also power impedor of the United Nations General Assembly's resistance on all street lamps, increased enforcement difficulty and cost, the measurement of the simultaneously magnitude of voltage of high-accuracy build-out resistor variation has also increased difficulty to System Implementation; Patent [CN201788559U] has then been invented a kind of dual signal enhancement mode cable burglar alarm, guarantee cable electricity is arranged or do not have the electricity situation under all be in monitored state, although it has realized having the antitheft detection under electricity and the power down mode, it does not solve the problem that power line carrier communication is affected by power line interference easily; Yu Zhen has proposed the New comprehensive cable antitheft mechanism that a kind of impedance measurement algorithm that loads direct current platen press and employing AC sampling combines in document " research of the cable theft-prevention new mechanism of measuring based on change in the instantaneous impedance ", its method is implemented simple, what yet it mainly detected is the non-civilian circuit with linear feature, is difficult to detect for the circuit that the nonlinear load such as LED lighting installation is arranged.Therefore, for complicated now lighting load characteristic, how to realize that cable theft-prevention detection highly reliable under electricity and the power down mode remains a urgent problem.

Summary of the invention

The purpose of this utility model is to propose a kind of network-type cable theft-prevention comprehensive detection device, and it has overcome the deficiencies in the prior art, has realized in the reliable detection that has electricity and power down mode to various lighting load circuits.

For achieving the above object, the utility model proposes a kind of road lighting cable Anti-theft detection device, comprise main control module and terminus module, main control module comprises main control unit MCU, electrical parameters detection submodule, alternating current detection sub-module, signal switching submodule, charging/holding circuit, lithium battery, parameter preservation, CAN bus interface and 485 bus interface; Wherein the electrical parameters detection submodule is used for regularly detecting voltage, electric current and the useful power on the power circuit; Alternating current monitoring submodule is for detection of Alternating Current Power Supply whether on the tested power circuit; The signal switching submodule is used for connecting electric power cable under power down mode, realizes DC level communication, has electricity condition then to cut off connection; Charging/holding circuit then be used for device powering mode switching and to the charge protection of lithium battery; The work of whole module is coordinated by MCU;

Terminus module comprises main control unit MCU, alternating current detection sub-module, signal switching submodule, charging/holding circuit, lithium battery, CAN bus interface and 485 bus interface; Described CAN bus interface and 485 bus interface are used for coherent signal with module and are transferred to other modules on the bus, and the work of whole module is coordinated by MCU.

Further, the signal of CAN bus interface and 485 bus interface transmission comprises the stolen warning of cable, lamp failure warning, tax evasion electric alarm and the electrical quantitys such as actual measurement voltage, electric current and useful power.

The beneficial effects of the utility model are, the reliable detection alarm of cable theft-prevention under electricity and the power down mode can be arranged the illuminating line realization with complex load, simultaneously can comprehensively realize lamp failure, tax evasion electric alarm, and electrical parameters detection, and realize and the organic integration of other Lighting Control Assemblies that by CAN bus interface and 485 bus interface System Implementation is simple.

Description of drawings

Fig. 1 is the main control module building-block of logic.

Fig. 2 is the terminus module building-block of logic.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further:

As depicted in figs. 1 and 2, pick-up unit of the present utility model comprises that main control module (Fig. 1) and terminus module (Fig. 2) consist of, and main control module comprises main control unit MCU, electrical parameters detection submodule, alternating current detection sub-module, signal switching submodule, charging/holding circuit, lithium battery, parameter preservation, CAN bus interface and 485 bus interface;

Wherein the electrical parameters detection submodule is used for regularly detecting voltage, electric current and the useful power on the power circuit; Alternating current monitoring submodule is for detection of Alternating Current Power Supply whether on the tested power circuit; The signal switching submodule is used for connecting electric power cable under power down mode, realizes DC level communication, has electricity condition then to cut off connection; Charging/holding circuit then be used for device powering mode switching and to the charge protection of lithium battery; The work of whole module is coordinated by MCU;

Main control module and terminus module all are with lithium battery, can when mains failure, work, realized the switching of powering mode by the charging in the module/holding circuit, when the illuminating power circuit has civil power, module adopts mains supply, and module adopts lithium battery power supply when mains failure, and charging/holding circuit can determine whether charge according to the electric weight of lithium battery; When mains-supplied, the signal switching submodule in the module disconnects DC level communication line and the power circuit of module simultaneously, on power down mode is then plugged into it automatically, to realize the communication of DC level by power circuit.Therefore, the utility model can carry out antitheft detection to the light conduits under electricity and the power down mode is arranged.

For main control module shown in Figure 1, when mains-supplied, the electrical parameters detection submodule will regularly be surveyed voltage, electric current and useful power parameter on the circuit by cycle time Δ T1, and send by CAN or 485 bus network.General Δ T1 can be set as 1 ~ 10 second.Therefore, the utility model can conveniently be realized the organic integration with other Lighting Control Assemblies.

Claims

1. road lighting cable Anti-theft detection device is characterized in that: comprise main control module and terminus module,

Described main control module comprises main control unit MCU, electrical parameters detection submodule, alternating current detection sub-module, signal switching submodule, charging/holding circuit, lithium battery, parameter preservation, CAN bus interface and 485 bus interface; Wherein the electrical parameters detection submodule is used for regularly detecting voltage, electric current and the useful power on the power circuit; Alternating current monitoring submodule is for detection of Alternating Current Power Supply whether on the tested power circuit; The signal switching submodule is used for connecting electric power cable under power down mode, realizes DC level communication, has electricity condition then to cut off connection; Charging/holding circuit then be used for device powering mode switching and to the charge protection of lithium battery; The work of whole module is coordinated by MCU;

Described terminus module comprises main control unit MCU, alternating current detection sub-module, signal switching submodule, charging/holding circuit, lithium battery, CAN bus interface and 485 bus interface; Described CAN bus interface and 485 bus interface are used for coherent signal with module and are transferred to other modules on the bus, and the work of whole module is coordinated by MCU.

2. road lighting cable Anti-theft detection device as claimed in claim 1, it is characterized in that the signal of described CAN bus interface and the transmission of 485 bus interface comprises the stolen warning of cable, lamp failure warning, tax evasion electric alarm and the electrical quantitys such as actual measurement voltage, electric current and useful power.