Smoke detectors, also known as smoke detectors, smoke detectors, smoke detectors, smoke detectors, and smoke detectors, are primarily used in fire protection systems and are also used in the construction of security systems. It is a typical type of equipment that is transformed from space firefighting measures to civil use.
Smoke detectors mainly achieve fire prevention by monitoring the concentration of smoke. Ionic smoke sensors are used inside smoke detectors. Ionic smoke sensors are advanced technology and stable and reliable sensors. They are widely used in various firefighting applications. In the alarm system, the performance is far superior to gas-resistance fire alarms. [1]
The smoke detector has a radioactive source 241 in the inside and outside ionization chambers. The positive and negative ions produced by the ionization move to the positive and negative electrodes respectively under the action of the electric field. Under normal conditions, the current and voltage of the internal and external ionization chambers are stable. Once there is smoke, escape the ionization chamber. Interfering with the normal motion of the charged particles, the current and voltage will change, destroying the balance between the inside and outside ionization chambers, so the wireless transmitter sends a wireless alarm signal to inform the remote receiving host to pass the alarm information out.
There are four conductor pieces on the base of the smoke detector. The terminal has a terminal on the chip. The position card is not set on the base. It is easy to adjust the detector to confirm the direction of the lamp. The detector bus in the wiring tube is connected to two terminals at any diagonal (non-polarity), and the other pair of conductors is used to assist the fixed detector.
In short, smoke detectors are still relatively common in life, which brings us a lot of convenience in our lives. It plays a very good role in safeguarding our safety and allows us to perfect our process.
Fire alarm system controller software design
Because the system is ultimately oriented towards end users, users generally do not understand the technical details and do not need to understand. What the user directly touches is the running interface of the software. Based on the realization of system functions, users often evaluate the advantages and disadvantages of a system through the simplicity of the operation interface, the complexity of the operation process, whether there is good consistency in the cross-section, and whether it is convenient for secondary development. From a programmer's point of view, programs that can be easily maintained and upgraded are dynamic. Therefore, based on the realization of basic functions, how to provide users with a simple, comfortable, friendly interface, how to make the user convenient and simple operating system, how to easily maintain and upgrade the software on the existing basis, how to It is the goal of modern system software design to enable secondary development with easy support.
The basic functional design requirements of the alarm controller software are as follows:
1) To be able to manage each fire detector, including the relevant information of the fire alarm detector, modify the fire detector information, add, delete the fire alarm detector. During the running of the software, the working status of the fire detector can be observed on the interface at any time.
2) It is necessary to be able to accurately identify the location of a fire detector or a faulty fire detector, and display relevant alarm information on the interface, prompting the operator to handle it. If a fire breaks out, the system displays the alarm information in addition to the alarm on the screen, and also prints the relevant alarm information for easy reference and analysis.
3) The software should complete the communication between the alarm controller and each fire detector. The wireless communication between the alarm controller and the fire alarm detector receives the data sent by the fire detector and completes the inspection of the fire detector.
4) The software must also be able to manage the operator's relevant information. Operators can be added, deleted, and existing operator information can be modified. When the software runs, it needs to enter the operator number and password to enter the system, so that the operating system personnel can better manage and make the system have higher security. The software also needs to be able to easily query the data records transmitted between the alarm controller and the fire detector, and the main interface of the program alarm information inquiry module communication module fire alarm processing module detector query module detector management module operator management module system operation log The history of the module system.
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