CN204029093U

CN204029093U - Based on the fire hazard monitoring warning device of CAN

Info

Publication number: CN204029093U
Application number: CN201420237976.6U
Authority: CN
Inventors: 刘春荣
Original assignee: Shaanxi University of Technology
Current assignee: Shaanxi University of Technology
Priority date: 2014-05-07
Filing date: 2014-05-07
Publication date: 2014-12-17
Anticipated expiration: 2024-05-07

Abstract

The utility model relates to a kind of fire hazard monitoring warning device based on CAN, comprise node control module, signal acquisition module, alarm module, main control module, CAN, signal acquisition module is connected with node control module with alarm module, and node control module is connected with CAN with main control module.This device have employed CAN technology and FUSION WITH MULTISENSOR DETECTION forms combined type signal acquiring system, improve the real-time of communication and the accuracy of detection, what make centralized large-sized fire monitoring and alarming system has that interface is simple, capacity is large, communication distance is far away, traffic rate is high, reliability is high and networking feature easily, achieves the digitizing of fire hazard monitoring management.

Description

Based on the fire hazard monitoring warning device of CAN

Technical field

The utility model belongs to intelligent security guard technical field, relates to a kind of fire hazard monitoring warning device based on CAN.

Background technology

Fire is the main disaster that the mankind face in peaceful environment, and the harm that it brings to the safety of people's lives and properties cannot be estimated.Along with the development of economy and technology, city high level, high-rise building, hypogee and large-scale synthesis building are increasing, the hidden danger of fire also increases, in order to avoid or reduce this disaster, except strengthening except fire safety education, all effective measures also to be taked to prevent the generation of fire.Fire hazard monitoring alarm technique is an element task of fire preventing, finds early and circulate a notice of fire in order to auxiliary people.Report to the police early, loss is few, not only significant to the entity and individual of breaking out of fire, and stamps out a fire in time to public security fire-fighting supervisory organ, and minimizing casualties and property loss are of great practical significance equally.

Along with the development of the communication technology, the design of fire hazard monitoring warning device, the centralized large-sized fire monitoring and alarming system of general employing, often need to connect hundred fire disaster monitoring alarms in subregion fire extinguishing controls, if master controller is connected distance and has exceeded the distance that serial-port communication can bear with the system of subregion Fire extinguisher, the problem such as communication disruption, data loading error occurring will be there is; Secondly original serial communication cannot form the system of multi-main construction or redundancy structure, and thus higher to the reliability requirement of host node, once host node breaks down, whole system will be paralysed; According to the CAN communication of dereliction from difference, how main working method, foregoing problems can be solved.Therefore a kind of fire hazard monitoring warning device based on CAN is developed, to meet the requirement of the communication interface of large-sized fire monitoring and alarming system.

Summary of the invention

The purpose of this utility model is to overcome the deficiency in above-mentioned existing serial communication technology, a kind of fire hazard monitoring warning device based on CAN is provided, this device interface is simple, communication distance is far away, communication rate fast high, reliability is high.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is:

A kind of fire hazard monitoring warning device based on CAN, comprise node control module, signal acquisition module, alarm module, main control module, CAN, it is characterized in that: described signal acquisition module is connected with node control module with alarm module, node control module is connected with CAN with main control module, described node control module comprises single-chip microcomputer, first CAN controller is connected successively with a CAN driver, described signal acquisition module comprises digital temperature sensor, sense smoke sensor and AD converter, digital temperature sensor is connected with single-chip microcomputer, sense smoke sensor is connected with single-chip microcomputer through AD converter, described main control module comprises PC, second CAN controller is connected successively with the 2nd CAN driver.

The beneficial effects of the utility model are: have employed CAN technology and FUSION WITH MULTISENSOR DETECTION formation combined type signal acquiring system, change the problem of real-time communication difference, single-sensor detection accuracy difference, what make centralized large-sized fire monitoring and alarming system has that interface is simple, capacity is large, communication distance is far away, traffic rate is high, reliability is high and networking feature easily, achieves the digitizing of fire hazard monitoring management.

Accompanying drawing explanation

Fig. 1 is system architecture diagram of the present utility model.

Embodiment

Below in conjunction with drawings and Examples, the utility model is further illustrated.

As shown in Figure 1, the utility model discloses a kind of fire hazard monitoring warning device based on CAN.Comprise node control module, signal acquisition module, alarm module, main control module, CAN; Signal acquisition module is connected with node control module with alarm module, and node control module is connected with CAN with main control module.

Node control module comprises single-chip microcomputer, CAN controller is connected successively with CAN driver.The AT89S51 single-chip microcomputer that single-chip microcomputer selects conventional American ATMEL to produce, with CAN controller SJA1000 and CAN driver PCA82C250 configuration node control module.SJA1000 is used for managing CAN communication specially, is the substitute of the early stage CAN controller PCA82C200 of PHILIPS Co., with better function, supports CAN2.0 agreement, can independently perform CAN agreement.PCA82C250 is the interface between CAN controller and physical medium, and 110 can be driven to adopt PCA82C250 as the node of bus interface equally.

Signal acquisition module comprises digital temperature sensor, sense smoke sensor and AD converter, and digital temperature sensor is connected with single-chip microcomputer, and sense smoke sensor is connected with single-chip microcomputer through AD converter.Digital temperature sensor selects single wire digital intelligent integrated temperature sensor DS18B20, this sensor is 1WIRE (unibus) the row digital temperature sensor that DALLAS company produces, have volume little, interface is convenient, long transmission distance and can the feature used in parallel; Sense smoke sensor selects UD-02 type ionic smoke sensor formula fire detector, and this detector sensitivity is high, good reliability, and its performance meets UL217 standard; AD converter selects ADC0809 as smoke collection circuit, carries out the conversion of simulating between numeral.

Main control module comprises PC, CAN controller is connected successively with CAN driver, and PC and CAN controller SJA1000 and CAN driver PCA82C250 form main control module.The fundamental purpose of CAN controller and CAN driver is collection signal and the control signal that can make transfer system easily and fast between main control module and node control module.

Embodiment of the present utility model is: two fire data information that digital temperature sensor and sense smoke sensor detect are transferred to single-chip microcomputer by signal acquisition module in real time, single-chip microcomputer carries out convergence analysis process to the data detecting two kinds of sensors, the smog of the stage generation and the Initial Stage of Fire detected observantly in protection domain glows, once reach threshold values, alerting signal is sent to alarm module, then in the digital signal configuration frame according to certain agreement and error-detection mechanism, single-chip microcomputer spread out of by CAN controller SJA1000, be sent in CAN by CAN driver PCA82C250 and transmit, main control module PC is responsible for receiving data that each node control module transmits and warning message carries out process storage, and the conversion completed between each channel, also send warning message to fire alarm FCC by upper layer channel, effectively reduce the fire alarm that manual monitoring link may cause to fail to report, report late, achieve the digitizing of fire hazard monitoring management.

Claims

1. the fire hazard monitoring warning device based on CAN, comprise node control module, signal acquisition module, alarm module, main control module, CAN, it is characterized in that: described signal acquisition module is connected with node control module with alarm module, node control module is connected with CAN with main control module, described node control module comprises single-chip microcomputer, first CAN controller is connected successively with a CAN driver, described signal acquisition module comprises digital temperature sensor, sense smoke sensor and AD converter, digital temperature sensor is connected with single-chip microcomputer, sense smoke sensor is connected with single-chip microcomputer through AD converter, described main control module comprises PC, second CAN controller is connected successively with the 2nd CAN driver.