Board features
1、High stability oscillatory technology ---- Frequency fluctuation <2×10-5 Hz
2、Fast and high precision frequency detection ----single channel 0.33ms/four channel1.330ms，measurement error<2×10-5Hz
3、High-speed channel sequence scanning technology ----eliminate crosstalk interference between channel coil.
4、Each channel four kinds of oscillation frequency selection switch----eliminate crosstalk interference between multiple cards coil
5、Dual sensitivity vehicle detection patent technology ----255 sensitivity levels setting
6、Fundamental frequency real-time updating technology ---- can eliminate temperature, pressure and other environmental factors led to deformation of the coils resulting frequency drift.
7、Vehicle presence time setting----can be set freely within 1-65535 seconds.
8、Four kinds of digital output----passing type、existence type、extending type、delaying type，behind three presence time can be set freely within 1-65535 seconds.
9、Curve matching vehicle speed detection patent technology.
10、 CAN Bus cascading patent technology---the same type of multi-block boards can be cascaded to use.
11、 Bidirectional logic detection function ----vehicle moving forward and converse detection.
12、 Bidirectional data detection function---detect vehicle length, speed traffic flow of moving forward and converse simultaneously.
13、 Detection results dual-output channel ----four-way isolation DO and a serial real-time output state and data.
14、 Rich real-time uploading function ----real-time uploading vehicle’s entry, exit coil state, vehicle’s moving direction, maximum frequency change value of each vehicle, existence time, instantaneous speed, length, etc.
15、 Interface expansion ----can expand a serial、a IIC interface；Can be produced according to customer’s demand.
16、 The industry’s most perfect lightning protection technology ----three levels lightning protection (semiconductor, isolated transformer, photocoupler isolation )
17、 Current industry’s most wide power input range ----12VAC－48VAC/12VDC－48VDC
18、 Current industry’s most wide temperature operation range---- -45℃ ---- +85℃
19、 Self-contained overall reliability design----semiconductor isolation, photocoupler isolation, transformer isolation, ESD, EMI, signal integrity, hardware division design.
20、 Optional seven Baud Rate----1200，2400，4800，9600，19200，38400，57600
21、 CAN Bus transmission speed 512K，the longest 100 meters----if adjust the transmission speed, the long-distance can reach 1,000 meters.