Intelligent traffic investigation machine
A technology of intelligent transportation and investigator, applied in the field of traffic information, can solve problems such as low utilization rate, limited applicability and flexibility, and large investment, and achieve the effects of easy portability, manpower saving, and powerful processing functions
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example 1
[0079] In Example 1, assume that the date is April 17, and the initial time is 14:10:10. The description of the incremental method to store data is as follows:
[0080] First record the current date and specific boot time. The initial date and initial time are shown in Table 1 and Table 2 respectively:
[0081] 1
61
[0082] Table 1 is the initial date storage format
[0083] 2
38
216
[0084] Table 2 is the initial time storage format
[0085] The initial date is calculated as: 1×256+161×1=417, which is April 17;
[0086] The initial time is calculated as: 2×65536+38×256+216×1=141010, that is, 14:10:10.
example 2
[0087] Example 2: When the vehicle license plate is investigated on the spot, the specific time when the "386" key is pressed is "14:25:18 on April 17", and the license plate and the specific time are stored.
[0088] The original record of Example 2 is "386, 0417142518". In the incremental method, two bytes are used to record the vehicle type "386", and the subsequent time data "0417142518" can use the initial date saved on the investigator and the initial time are simplified, as shown in Table 3.
[0089] 1
130
5
228
[0090] Table 3 Incremental Method Example 2 Storage Format
[0091]The first two bytes represent the vehicle volume license plate (three): 1 * 256+130 * 1=386;
[0092] The third four bytes represent the time difference, and the calculation is the same as in Example 1.
[0093] It can be seen from the above that using the incremental data storage structure, each data only needs to occupy 4 bytes of storage space, a 64kbit...
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