[ Pacific Security Network News ]
Do you know how to detect smoke detectors in English? First, the concept and principle of the smoke detector are introduced. Smoke detectors are also called smoke detectors, smoke detectors, smoke detectors, smoke detectors and smoke sensors. They are mainly used in fire protection systems. There are also applications in the construction of security systems. It is a typical device that was converted from civilian firefighting measures to civilian use. The smoke detector mainly monitors the concentration of smoke to achieve fire prevention. The smoke detector uses ion smoke sensor. The ion smoke sensor is a technology-advanced, reliable and reliable sensor. It is widely used in various fire protection. In the alarm system, the performance is far superior to the fire alarm of the gas sensor.
Principle of smoke detector
The smoke detector mainly monitors the concentration of smoke to achieve fire prevention. The smoke detector uses ion smoke sensor. The ion smoke sensor is a technology-advanced, reliable and reliable sensor. It is widely used in various fire protection. In the alarm system, the performance is far superior to the fire alarm of the gas sensor.
The smoke detector has a radiation source 241 inside and outside the ionization chamber. The positive and negative ions generated by ionization move to the positive and negative electrodes 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 movement of charged particles, the current and voltage will change, destroying the balance between the internal and external ionization chambers, so the wireless transmitter sends a wireless alarm signal to inform the remote receiving host to transmit the alarm information.
There are 4 conductor pieces on the base of the smoke detector. There are terminal blocks on the chip, and no position card is set on the base. It is convenient to adjust the direction of the detector alarm confirmation lamp. The detector bus in the wiring tube is respectively connected to two terminals of any diagonal (regardless of polarity), and the other pair of conductor pieces is used to assist the fixed detector.
In short, smoke detectors are still relatively common in life, bringing a lot of convenience to our lives, which plays a very good role in safeguarding our safety and allows us to improve our progress.
Fire alarm system controller software design
Because the system is ultimately oriented to the end user, and the user generally does not understand the technical details, and does not need to understand, the user directly touches the software running interface. On the basis of the realization of the system function, the user often evaluates the merits of a system through the simplicity of the operation interface, the complexity of the operation process, whether the cross section has good consistency, and whether it is convenient for secondary development. From a programmer's point of view, programs that can be easily maintained and upgraded are energetic. Therefore, on the basis of the realization of basic functions, how to provide users with a simple, comfortable and friendly interface, how to make the user convenient and simple operating system, how to easily implement software maintenance and upgrade on the existing basis, how to The secondary development that makes it easy to support is the goal of modern system software design.
The basic functional design requirements of the alarm controller software are as follows:
1) It is necessary to be able to manage each fire detector, including inquiring about fire alarm detector information, modifying fire detector related information, adding and deleting fire alarm detectors. During the operation of the software, the working state of the fire detector can be observed at any time on the interface.
2) It is necessary to accurately identify the location of the fire detector that has a fire or malfunction, and display relevant alarm information on the interface to prompt the operator to handle it. In the event of a fire, the system displays an alarm message on the screen and issues an alarm. The relevant alarm information is also printed out for easy access 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 information about the operator. Operators can be added, removed, and existing operator information can be modified. When the software is running, it is necessary to enter the operator number and password to enter the system, so that the personnel of the operating system can be better managed and the system has higher security. The software must also be able to easily query the data records transmitted between the alarm controller and the fire detector, as well as the program main interface alarm information query module communication module fire alarm module detector query module detector management module operator management module system operation log The history of the module system.
Smoke detector
Smoke detector
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