Infrared detector operation method

(1) Adjusting the optical axis of the emitter Open the probe cover and align the eye with the sight. Observe the effect of the sight inside the scope. The optical lens of the probe can be adjusted by hand in the range of 180°. Use a screwdriver to adjust the up and down of the lens. Adjust the screws. The lens system has an adjustment range of 12° up and down. Repeated adjustment makes the impact of the other detector in the sight fall into the central position. Take care not to cover the optical axis during adjustment so as not to affect the adjustment work. The adjustment of the optical axis of the projector has a great influence on the sensitivity performance of the zone. Please make sure to follow the correct steps carefully and repeatedly.

(2) Adjustment of the optical axis of the receiver Step 1: Initial adjustment of the optical axis of the receiver is performed in the same manner as “adjustment of the optical axis of the projector”. At this point, the red warning light on the receiver is extinguished, the green indicator light is on, and there is no flickering phenomenon, indicating that the optical axis of the cover head coincides normally, and the function of the light projector and the light receiver is normal.

The second step: There are two small holes in the receiver, marked with "+" and "-", respectively, used to test the infrared sensor feel the intensity, the value expressed by the voltage, known as the photosensitive voltage. Insert the multimeter's test leads (red "+", black "-") into the photoreceptor's photo-sensing voltage. Repeatedly adjusting the lens system maximizes the exposure voltage. In this way, the working state of the probe reaches the best state.

Note: The four-beam detector has two sets of optical systems, which need to cover the upper and lower lenses of the receiver, respectively, and adjust the upper and lower exposure voltage values ​​to be the same. Older four-beam detectors The two groups of optical systems are separately adjusted. Since the relationship between the four optical systems of the two transmitters, the transmitter and the receiver, is involved, it is difficult to adjust them. It requires careful adjustment and improper handling. There is a false alarm or protection of the dead zone. The ABF four-beam detector has integrated the two parts into an integrated regulation, making it easier to construct the project.

(3) Adjustment of shading time The shading time adjustment button is provided on the receiver. Generally, the shading time of the probe is adjustable between 50m/s and 500m/s. When the probe is shipped from the factory, the shading time of the probe is adjusted to a standard in the factory. Positionally, under normal circumstances, this location is a relatively modest state, taking into account the environmental conditions and the characteristics of the probe itself, so there is no special reason, and there is no need to adjust the shading time. If you need to adjust the shading time due to the fortification, to adapt to changes in the environment. In general, the shading time is short and the sensitivity of the probe is fast, but it is also sensitive to falling leaves, flying birds, and the like, and the possibility of false alarms increases. Long shading time reduces the sensitivity of the probe and increases the probability of missed reports. The engineer should adjust the shading time according to the actual needs of the fortification.

(4) After the link probe with the anti-theft host is set, the tamper switch will be connected to the zone input circuit. After the line is completed, cover the probe housing and tighten the fastening screw. It is required that the zone warning light on the anti-theft host should not flicker or illuminate, and there is no alarm indication output in the zone. Indicates that the entire zone is set properly. Otherwise, check the line, re-commission the probe, and confirm the status of the zone.

(5) Anti-theft performance test After the working condition of the zone is normal, the optical axis of the probe should be blocked at all speeds and in different ways according to the requirements of the fortification, using all possible sizes and shapes similar to those of the defense, and wireless at the alarm site. The walkie-talkie is in contact with the control center to check whether the alarm condition is normal, and at the same time, careful attention should be paid to whether the control panel has flickering or unstable status. In order to avoid leaving the hidden danger to the alarm system. We verbally call this process a firing test. The purpose of making a shot test is to test whether the zone can have a normal alarm capability, test whether the range of zone protection can meet the predetermined requirements, and whether there is a protection dead zone.