Intelligent community building intercom system installation and debugging

As the new darling of the 21st century, the intelligent residential community has its own requirements. According to the regulations of the Ministry of Construction, there are currently six requirements for an intelligent residential community: a computerized automation management center for residential quarters, automatic metering of water, electricity, and gas, etc. Charges; closed residential quarters, the implementation of automatic monitoring and management of security systems; residential fire, harmful gas leakage automatic alarm; residential building intercom and emergency call system; the implementation of centralized management of key equipment and facilities in the residential area, its operational status Implement remote monitoring.

The general intelligent community includes the following subsystems:

1. Residential monitoring system 2. Electronic Patrol System 3. Three table automatic copying system 4. CCTV monitoring system 5. Community Boundary Monitoring System 6. Access control non-contact card system 7. Building visual / non-visual intercom system, building intercom system <br> <br>

It can be seen that the intelligentization of residential communities is based on high technology, using advanced equipment and management methods, using computers and related latest technologies, using modern computer technologies, sensing technologies, transmission technologies, and traditional building structures. Network technology, automatic control technology and other advanced technologies to improve efficiency, reduce losses and save costs. Continuously improve the degree of automation in property management, security and information services in residential communities, and provide residents with a safe, convenient and comfortable living space.

This article mainly elaborates on the engineering commissioning and installation of the intelligent residential building intercom system. It is divided into ten major precautions: pre-installation commissioning, complete system pre-power inspection, unit building video surveillance and intercom commissioning. Make installation and commissioning engineers learn and improve work efficiency from practical engineering cases.

First, equipment preparation before installation

1. Before the equipment is installed, it is necessary to conduct a comprehensive inspection of all the lines of the system, whether there is a disconnection or a short circuit;

2. After confirming that there is no fault in the line of the whole system, the equipment can be installed. Solder must be added to the joints of the wiring.

3, the installation of equipment must be in strict accordance with the instructions attached to the product or installation manual for correct wiring.

Second, the system before power debugging
1. After the equipment is fully installed, it must be fully checked whether the wiring of each part is correct; if there is a wrong connection, the whole system may not work properly.

2. Check if the power cord is connected incorrectly, and if there is a short circuit between the positive and negative poles, otherwise the device will burn out the equipment and its related circuit equipment, which will cause serious fire.

Third, the unit building intercom and visual part of the debugging

1. Under the condition that the circuit and wiring are correct and the equipment is in good condition, the unit system can work normally after being powered on.

2. When debugging in the unit building, first connect all the wirings of the door host and the lowest layer protector/decoder and indoor unit, and at the same time number the extension's room number in accordance with the instructions for use; Confirm whether the door host and underlying lines and equipment are normal.

3, if the normal work shows the door of the host and the line and equipment is normal; then cut off the system power supply, and then connected to the main line of the next layer of the system, the second layer of debugging (system wiring must be off), in turn up .

4, in the unit building debugging process, must start from the ground floor layer by layer upward debugging, that is, after the first layer of debugging, and then the second layer of debugging, so that has been up debugging, until the whole unit Commissioning is completed and it can work normally.

PS: Under normal conditions, the voltage parameters of the multimeter can be used to measure the following voltage parameters to judge the quality of the circuit or equipment;

Static, supply voltage and +B voltage to ground: 12V

Audio line A2 voltage to ground: 0V

Data line P voltage to ground: 0V

After calling the extension, the voltage of the audio line will change to ground: rise to 5.6V

At the same time, the moment of the call through the extension can be measured on the data line P line to a rapid change in pulse voltage between 0-5V change.

5, if the entire unit system equipment is installed and the wiring is correct, but can not work after power on, first power only leaving the underlying protector/decoder, indoor unit and the door of the host is connected, that is, more than two layers The bus of the protector/decoder is completely removed, and it is confirmed whether the main door and the bottom protector/decoder and the indoor unit are normal. If it is normal, the fault is in the protector/decoder or indoor unit above the second floor. In this way, you must find the root cause of the fault layer by layer.

6, encountered the above fault, if the floor is higher, you can use the "golden section method" to check the fault, that is, first break the middle floor (if the 20 floors must be disconnected in the 10th layer) above the protector / decoder Bus, restore the bus connected to the second floor, confirm the fault is specifically in the middle layer or above the middle layer, according to this method can quickly identify the root cause of the fault.

7. As long as the wiring between the indoor unit and the protector/decoder is correct, the connection cable between the protector/decoder and the indoor unit is plugged in and the video line is connected. The room number of the extension can be normal after debugging without debugging. jobs;

8. If the image of the indoor unit is ghosted or the image is distorted due to excessive signal strength, a 75-ohm-size carbon film resistor must be connected to the video output of the last protector/decoder at the top layer for attenuation. / Match the video signal 9. If the image of the indoor unit appears blurred or the image is relatively white, it means that the video signal is weak. At this time, the video gain can be adjusted by turning on the video amplifier circuit on the protector; the method is to put the protector on the side by side 3 The jumpers J1, J2, and J3 can be turned to the ON position from the original OFF position. At the same time, the size of the video gain and the size of the high-frequency signal can be adjusted by adjusting the two potentiometers on the protector. Specific measures can be taken to the side of the extension connected to the protector, while adjusting the potentiometer, while observing the image; generally low-level (7 layers below) does not need to open the video amplifier circuit; high-level (more than 20 layers) also just open a protector Video amplifier circuit can be.

10. If there is a harsh whistling noise during the call between the host computer and the indoor unit, or when the sound of the host horn is small, you can use a small flat-blade screwdriver to carry out the potentiometers VR1 and VR2 on the mainboard of the entrance host computer. Speaker, microphone volume adjustment.