CN105682305B - A kind of green illumination is met an urgent need dual-purpose lamp and control method - Google Patents

Abstract

The invention discloses a green lighting emergency dual-purpose lamp, which comprises: a host computer monitoring system; a fire alarm controller connected to the host computer monitoring system for monitoring fire signals; a lamp; a lamp controller connected to the The host computer monitoring system is connected to perform data exchange; the power circuit and the storage battery circuit provide the mains power and the storage battery power respectively; the power switching circuit is connected to the power supply circuit and the storage battery circuit respectively to realize seamless switching between the storage battery and the storage battery; The infrared induction circuit is connected with the lamp controller to convert the infrared signal sent by the human body into an electrical signal and transmits it to the lamp controller; the lamp driving circuit is connected with the lamp to drive the lamp to light up. The invention combines the corridor light and the emergency fire-fighting light into one, and solves the problem of waste of space and energy caused by the independent functions of the traditional corridor light and the emergency light. The invention also provides a control method for the green lighting emergency dual-purpose lamp.

Description

A green lighting emergency dual-purpose lamp and its control method

technical field

The invention relates to the technical field of lighting devices, in particular to a dual-purpose lamp for normal lighting and fire-fighting emergency.

Background technique

With the continuous advancement of urbanization in our country and the rapid development of high-rise buildings and intelligent buildings, fire protection issues have also followed, which are highly valued. As a fire linkage equipment, fire emergency lights have become an indispensable part in residential buildings. According to the provisions of GB50016-2014 of the "Code for Fire Protection of Building Design", emergency lighting should be installed in the stairwells and other places of high-rise residential buildings with a building height of not less than 27 meters.

There are many deficiencies in present fire emergency lights from a practical point of view. First, most of the traditional double-headed fire emergency lights use gas discharge light sources such as incandescent lamps or fluorescent lamps as light sources, which consume a lot of power and are not conducive to energy conservation and environmental protection. Second, the fire emergency light only works when the normal power supply fails, and its function is single, and it is in an idle state at ordinary times. And the place that usually installs fire-fighting emergency lamps also can install general lighting lamps, has caused the repeated waste of lamps and lanterns like this. Third, due to the short and uncertain working time of the fire emergency lights, it is easy to be neglected by the staff to overhaul them. Once an emergency occurs, they may not function and have hidden dangers. Fourth, the fire emergency lamps that use EPS (emergency power supply) centralized power supply are usually powered by 220V AC power supply. In case of emergency such as fire, the inverter needs to invert the DC output of the EPS battery pack into AC power supply. The water sprayed by the fire sprinkler device will be very dangerous. Fifth, according to the requirements of GB50116-2013 "Code for Design of Automatic Fire Alarm System", the power supply of fire emergency lighting lamps should be able to be monitored in real time, but most of the fire emergency lamps currently on the market do not have this function, nor can they be unified monitor.

The places where fire emergency lights are installed usually also need corridor lights. There are many differences between the two, and the points related to this patent are summarized as follows:

The illuminance requirements are different. Normal lighting generally requires 50lx illuminance, and emergency lighting generally requires 5lx illuminance, which is a difference of 10 times. However, the space in the stairwell is often narrow. Whether it is normal lighting or emergency lighting, a set of lamps is required to meet the illuminance requirements.

The power supply requirements are different, mainly because emergency lighting requires batteries to be used as emergency power supplies, and the capacity of the batteries should be able to meet the working time of the lamps and lanterns. Generally, the working time of the lights is not less than 90 minutes. The voltage of the batteries must be monitored by the fire power monitoring system, while normal lighting no request.

The control requirements are different. Normal lighting is used under normal conditions. Manual, sound and light, infrared, etc. control methods can be used to realize the lighting and extinguishing of lamps. Emergency lighting is used in fire situations and is forced to light up after receiving fire signals. The two are not used at the same time.

At present, in practical engineering applications, normal lighting and emergency lighting generally adopt the following two control methods:

Two sets of completely independent systems are used to complete their respective functions independently without affecting each other. But the investment is big, the resources are wasted, and it is not beautiful to adopt two sets of lamps and lanterns in a narrow space.

Use one system to complete the two functions, you can use the battery that comes with the lamp, or use a centralized battery pack to provide power, that is, the EPS system. Because it is a shared lamp, and the power of the lamp is configured according to the normal lighting requirements, the capacity of the battery has to be increased by 10 times, and the investment has increased.

In addition, the above two methods must be equipped with an external fire power monitoring system to monitor the voltage of the battery. And can not give full play to the effect of accumulator when non-fire accident, there is huge resource waste problem.

Contents of the invention

The invention designs and develops a dual-purpose green lighting emergency lamp, which solves the defect of waste of resources caused by independent setting of the normal lighting lamp and the fire emergency lamp, and makes the emergency lamp and the corridor lighting lamp two in one, saving economic costs.

Another object of the present invention is to provide a method for controlling the brightness of a lamp, so that the brightness of the lamp can meet the lighting requirements and have a longer working time when a fire occurs.

The technical scheme provided by the invention is:

A green lighting emergency dual-purpose lamp, comprising:

PC monitoring system;

A fire alarm controller, which is connected to the host computer monitoring system for monitoring fire signals;

lamps;

A lamp controller, which is connected to the host computer monitoring system for data exchange;

The power supply circuit and the storage battery circuit provide mains power and storage battery power respectively;

A power switching circuit, which is respectively connected to the power circuit and the battery circuit, to realize the seamless switching between the battery and the mains;

Infrared sensing circuit, which is connected with the lamp controller, converts the infrared signal sent by the human body into an electrical signal and transmits it to the lamp controller;

The lamp driving circuit is connected with the lamp to drive the lamp to turn on.

Preferably, the lamps are LED lamps.

Preferably, the lamp is provided with two groups of lamp beads, one large and one small.

Preferably, the lamp controller adopts STC15W401AS chip.

Preferably, the host computer monitoring system communicates with the lamp controller through CAN bus.

Preferably, the lamp controller adopts PWM dimming technology to adjust the brightness of the lamp.

Preferably, a voltage acquisition circuit is also included, which is connected to the power supply circuit and the battery circuit, collects the voltage of the mains power and the battery, and transmits the voltage to the host computer monitoring system.

A method for controlling a green lighting emergency dual-purpose light, using the above-mentioned green lighting emergency dual-purpose light, and the green lighting emergency dual-purpose light further includes:

A smoke density sensor to detect the smoke density c when a fire breaks out;

A temperature sensor to detect the temperature t when a fire occurs;

Humidity sensor to detect relative humidity s in case of fire;

The lamp controller performs PWM dimming on the lamp, and the duty ratio d satisfies

where a is a constant.

Preferably, when no fire signal is detected, the smoke concentration sensor, temperature sensor, and humidity sensor are in a non-powered state.

Preferably, the smoke concentration sensor is an ion smoke sensor.

The beneficial effects of the present invention are:

The present invention combines corridor lights and emergency fire lights into one, usually used for corridor lights, does not light up when the illumination is large enough during the day, and uses infrared induction at night to light up when a human body passes by. Once encountering a fire situation, it will switch to the fire protection mode, and the fire area will light up. If the mains power is cut off, it will use its own battery to supply power. Control management. The invention saves the total number of corridor lamps, makes full use of idle emergency lamps, and saves economic costs. At the same time, because the emergency lamps and corridor lamps are combined into one, some wire loops are reduced, and the work burden for electrical designers is also reduced. At the same time, it has its own battery and has the function of fire emergency lighting, which enhances safety and reliability. In addition, infrared human body induction switch is used, which is more user-friendly and reduces noise pollution. In addition, high-efficiency, energy-saving and environmentally friendly LEDs are used as light sources, with adjustable brightness, green power-saving and long service life, in line with the long-term strategy of national sustainable development, and the theme of the era of environmental protection. It has high practical value and is in line with the development trend of related industries. Broad application prospects.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the green lighting emergency dual-purpose lamp according to the present invention.

Fig. 2 is a schematic structural diagram of the terminal lighting system according to the present invention.

Fig. 3 is a schematic structural diagram of a two-layer control system according to the present invention.

Fig. 4 is a control schematic diagram of the lamp controller according to the present invention.

Fig. 5 is a flow chart of the main program of the present invention.

Fig. 6 is a flow chart of the host computer monitoring system according to the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

The invention provides a green lighting emergency dual-purpose lamp, which has the main functions of automatic control of light switch, intelligent brightness adjustment, voltage detection, fault detection, centralized information collection and control of PC upper computer, and distributed lighting based on CAN bus. Architecture, node devices can be added and deleted at any time.

As shown in FIG. 1 , the present invention includes a fire alarm controller 100 , a host computer monitoring system 200 , and a terminal lighting system 300 . The host computer monitoring system 200 is connected with the fire alarm controller 100 and the terminal lighting system 300 respectively. The fire alarm controller 100 is used to monitor fire signals, and transmit the detected fire signals to the host computer monitoring system 200 in real time. The host computer monitoring system 200 controls the terminal lighting system 300 according to the actual situation.

Referring to Fig. 2 together, the terminal lighting system 300 includes a power supply circuit 310, a battery circuit 320, a power switching circuit 330, a voltage acquisition circuit 340, a lighting controller 350, a CAN driving circuit 360, an infrared sensing circuit 370, and a lighting driving circuit 380 , 390 lamps.

The lamp 390 adopts LED lamp beads. The lamp controller 350 uses the STC15W401AS chip, and its main function is to process the data collected by the peripheral circuit, and also need to transmit the processed data to the host computer monitoring system 200 through the CAN bus. The power circuit 310 converts the AC 220V voltage into a DC voltage, the battery circuit 320 completes the charging and discharging function of the battery, and the power switching circuit 330 can realize the seamless switching between the battery and the mains, ensuring the continuity of the distributed control system of the corridor dual-purpose lights. run. The voltage acquisition circuit 340 enables the terminal to acquire the input voltage including battery voltage and mains voltage. The MCU processes the acquired data and transmits it to the host computer monitoring system 200 for real-time display, so as to achieve the monitoring function of the input voltage. The infrared sensing circuit 370 converts the infrared signal sent by the human body into an electrical signal and transmits it to the lamp controller 350, and the lamp controller 350 intelligently switches the lamp 390 according to the signal. The CAN drive circuit 360 implements data communication between the host computer monitoring system 200 and the lamp controller 350 , including the host computer monitoring system 200 reading data processed by the lamp controller 350 and sending control instructions to the lamp controller 350 .

The control system of a green lighting emergency dual-purpose lamp provided by the present invention is divided into two layers: a host computer monitoring system 200 and a lamp controller 350. The overall structural design of the system is shown in Figure 3.

The upper computer monitoring system 200 is connected to the CAN bus through the serial port to CAN controller module, which can monitor the working status of the system and effectively control the operation of the system. The lighting controller 350 is located in the lower layer, and the lower layer system is composed of several lighting nodes connected to the CAN bus, which are evenly distributed in the corridor space, and are uniformly monitored by the upper computer monitoring system 200 .

In the whole system, each lamp node control module can not only perceive the surrounding infrared signals in real time to control the LED lamps to turn on and off, but also use the power switching circuit to effectively solve the problems that the lights cannot continue to work due to sudden power outages. The lamp node can collect signals such as voltage signal and light brightness in real time, and transmit the signal information to the host computer monitoring system 200 through the CAN bus control module. The host computer monitoring system 200 can not only realize centralized management of the data transmitted by the lamp controller 350, but also display relevant data parameters transmitted by the CAN bus, such as: light brightness, voltage signal, light on and off, working status, power supply status, etc. Information; at the same time, it can also realize the control of the lamp node, for example: adjust the brightness of the light, turn on and off the light, etc., as shown in Figure 4 and Figure 5.

The upper computer monitoring system 200 is equipped with a human-computer interaction interface, which is developed based on Microsoft Visual Basic 6.0 development software and Access2013 database, which is convenient for human control and real-time monitoring of system status, and effectively improves work efficiency. The software has the functions of database storage, real-time monitoring, remote control and control mode selection, etc., and can realize monitoring and alarm under system failure status.

In the host computer monitoring system 200, each node independently completes corresponding tasks such as data collection, processing, storage, and display. During data communication, each node is an "equal subject" and communicates in a point-to-point manner. At the same time, each node can be used as an upper computer. Connection point for the CAN bus. Send system data collection commands and receive and store data through UART. The host computer control system program is mainly divided into three parts: main program, CAN interrupt service program and UART interrupt service program, the flow chart of which is shown in Figure 6.

As a preference, the green emergency dual-purpose lamp provided by the present invention further includes a smoke concentration sensor, a temperature sensor and a humidity sensor, which are respectively used to detect the smoke concentration c, temperature t and relative humidity s when a fire breaks out. Among them, the unit of c is ppm, the unit of t is Celsius, and the unit of s is one hundredth.

When the lamp controller performs PWM dimming on the lamp, the duty cycle d satisfies the following relationship:

where a is a constant. As a preference, a=0.057.

When no fire signal is detected, the smoke concentration sensor, temperature sensor, and humidity sensor are in a non-powered state, which can save energy. When a fire signal is detected, the smoke concentration sensor, temperature sensor, and humidity sensor are powered on, and the smoke concentration c, temperature t, and relative humidity s are collected in real time, and the duty is adjusted according to the smoke concentration c, temperature t, and relative humidity s The ratio d further adjusts the brightness of the lamp, so that the brightness of the lamp can meet the lighting demand, and at the same time, the service time of the battery can be extended.

As a preference, the smoke concentration sensor is an ion smoke sensor.

The present invention has several working modes as follows:

a. Under normal circumstances, when the mains power is normal, a large group of lamp beads can be lit through the normal control method, and the power supply is provided by the mains at this time.

b. In the case of a fire accident, when the mains power is cut off, the lamp receives the control information from the host computer through the CAN bus, and the lamp beads of the control group are forced to light up. At this point the power is provided by the battery.

c. Under normal circumstances, when the mains power is cut off, the group lamp beads can be turned on and off through normal control methods. At this point the power is provided by the battery.

d. In the case of a fire accident, when the mains power is normal, the lamps receive the control information from the host computer through the CAN bus, and control the forced lighting of a large group of lamp beads. At this time, the power supply is provided by the mains.

This patent combines the fire emergency lighting function with the corridor lights, and designs a distributed control system for corridor lighting and emergency dual-purpose lights with its own battery. The control system is a dual-purpose system for normal emergency, which is composed of a host computer and a lamp with its own battery. The lamp is equipped with a single-chip microcomputer control module, and the CAN bus is used for communication between the host computer and the lamp. The system not only realizes the intelligent green lighting function, but also realizes the emergency lighting function in the case of abnormal power failure, etc., which changes the single-function defect of the traditional lighting system and effectively enriches the functions of the corridor lighting system. The battery voltage detection device is equipped in the lamp, and the detection information is uploaded to the host computer through the CAN bus to meet the requirements of the fire power monitoring system. The main functions and significance of the corridor green lighting emergency dual-purpose light distributed control system are summarized as follows:

(1) The light source adopts energy-saving, high-efficiency and environmentally friendly LED lamps, which can effectively save energy and reduce power consumption. In realizing the corridor lighting function, this system adds an infrared sensing sensor module to each lamp node, and controls the lights to turn on and off through infrared sensing, which can effectively solve the problem of waste of corridor lighting power when there is no one in the corridor, and embodies the design concept of green intelligence;

(2) Compared with the traditional lighting control system, the lamp has two kinds of normal and emergency lighting functions, and two power supply modes of mains power and storage battery. It is usually used for corridor lighting, and the light is controlled by the temperature of the body; in case of emergency, it enters the fire mode, and the fire area is fully lit. When the mains power is normal, the mains power is given priority to supply power, and when the power is abnormally cut off, it is powered by the battery. This design not only solves the problem of space and energy waste caused by the independent functions of traditional corridor lights and emergency lights, but also effectively solves the problem of failure to activate the fire mode in case of emergency and abnormal power failure, which leads to disasters.

(3) The lighting system design adopts the distributed design concept based on the CAN bus. Each lighting node has an independent control chip and sensor chip, and the signal is transmitted through the CAN bus. The CAN bus has the advantages of good real-time performance, high reliability, flexible configuration, and strong anti-interference ability. The application of CAN bus to this lighting system can effectively solve the problems of short communication distance and slow signal transmission speed in the current lighting control system using communication protocols such as RS-232 and RS-485.

(4) The host computer monitoring system software developed based on VB language can effectively remotely monitor the lighting mode, voltage information and communication status of each node lamp. Moreover, the host computer monitoring system software also has a control function, which can effectively control the working mode of the lamp and adjust the brightness of the LED light.

Although the embodiment of the present invention has been disclosed as above, it is not limited to the use listed in the specification and implementation, it can be applied to various fields suitable for the present invention, and it can be easily understood by those skilled in the art Therefore, the invention is not limited to the specific details and examples shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims (3)

1. The dual-purpose lamp control method 1. a kind of green illumination is met an urgent need, it is characterised in that the green illumination dual-purpose lamp of meeting an urgent need includes：

   Monitor Computer Control System；

   Fire alarm control unit, it is connected with the Monitor Computer Control System, for monitoring fire signal；

   Light fixture；

   Lamp controller, it is connected with the Monitor Computer Control System；

   Power circuit and battery circuit, provide electric power respectively；

   Power supply switch circuit, it is connected with power circuit and battery circuit respectively, realizes the switching of battery and civil power；

   Infrared induction circuit, it is connected with lamp controller, and the infrared signal that human body is sent is changed into electric signal passes to light fixture Controller；

   Lamp driving circuit, it is connected with the light fixture, and driving light fixture is lighted；

   Smokescope sensor, smokescope c when occurring fire to detect；

   Temperature sensor, temperature t when occurring fire to detect；

   Humidity sensor, relative humidity s when occurring fire to detect；

   The lamp controller carries out PWM light modulations to light fixture, and dutycycle d is met

   <mrow> <mi>d</mi> <mo>=</mo> <mfrac> <mn>0.8</mn> <mi>&amp;pi;</mi> </mfrac> <mi>arctan</mi> <mi> </mi> <mi>c</mi> <mo>+</mo> <mn>0.048</mn> <msup> <mi>e</mi> <mrow> <mo>-</mo> <mn>0.0005</mn> <mrow> <mo>(</mo> <mi>t</mi> <mo>-</mo> <mn>22</mn> <mo>)</mo> </mrow> </mrow> </msup> <mo>+</mo> <mn>0.046</mn> <mi>l</mi> <mi>n</mi> <mrow> <mo>(</mo> <mi>s</mi> <mo>-</mo> <mn>35</mn> <mo>)</mo> </mrow> <mo>+</mo> <mi>a</mi> </mrow>

   Wherein a is constant.
2. The dual-purpose lamp control method 2. green illumination according to claim 1 is met an urgent need, it is characterised in that believe when detecting fire Number when the smokescope sensor, temperature sensor and humidity sensor be in power-up state.
3. The dual-purpose lamp control method 3. green illumination according to claim 1 is met an urgent need, it is characterised in that the smokescope is passed Sensor uses ion type smog sensor.