阅读说明：本技术 用于测定信号中边沿的时间点的方法和评估单元 (Method and evaluation unit for determining the time points of edges in a signal ) 是由 德克·伯纳 于 2020-05-06 设计创作，主要内容包括：本发明涉及一种用于测定信号(132)中的边沿(200)的时间点的方法(700),其中所述方法(700)具有读取所述信号(132)和基本时钟(210)的步骤(710),所述基本时钟用于运行用以评估所述边沿(200)的时间点的数字评估单元(125)。另外,所述方法(700)还包括生成步骤(720),用于使用SERDES单元(300)的解串器(310)生成代表所述信号(132)的数据字(220),其中所述数据字(220)具有多个比特,并且其中所述SERDES单元(300)还被加载用于所述信号(132)的采样的采样时钟(205),所述采样时钟高于所述基本时钟(210),其中所述采样时钟(205)的一个边沿或两个边沿用于对所述信号(132)进行采样。最后,所述方法(700)包括测定步骤(730),用于使用所述评估单元(125)中的所述数据字(220)和所述基本时钟(210)对所述信号(132)中的所述边沿(200)的时间点进行测定。(The invention relates to a method (700) for determining the time of an edge (200) in a signal (132), wherein the method (700) comprises a step (710) of reading the signal (132) and a basic clock (210) for operating a digital evaluation unit (125) for evaluating the time of the edge (200). In addition, the method (700) further comprises a generating step (720) for generating a data word (220) representing the signal (132) using a deserializer (310) of a SERDES unit (300), wherein the data word (220) has a plurality of bits, and wherein the SERDES unit (300) is further loaded with a sampling clock (205) for sampling of the signal (132), the sampling clock being higher than the base clock (210), wherein one or both edges of the sampling clock (205) are used for sampling the signal (132). Finally, the method (700) comprises a step (730) of determining the point in time of the edge (200) in the signal (132) using the data word (220) and the basic clock (210) in the evaluation unit (125).)

1. A method (700) for determining a point in time of an edge (200) in a signal (132), wherein the method (700) has the following steps:

-reading (710) the signal (132) and a basic clock (210) for running a digital evaluation unit (125) to evaluate the point in time of the edge (200);

-generating (720), using a deserializer (310) of a SERDES unit (300), a data word (220) representative of the signal (132), wherein the data word (220) has a plurality of bits, and wherein the SERDES unit (300) is further loaded with a sampling clock (205) for sampling the signal (132), the sampling clock being higher than the base clock (210), wherein one or two edges of the sampling clock (205) are used for sampling the signal (132); and

-determining (730) the point in time of the edge (200) in the signal (132) using the data word (220) in the digital evaluation unit (125) and the basic clock (210), characterized in that in the step (720) of generating a second data word (420) representing the signal (132), the second data word (420) is generated using a second deserializer (410) of a second SERDES unit (400), the second data word having a plurality of bits, wherein the second SERDES unit (400) is loaded with a second sampling clock (440) higher than the basic clock (450) shifted by a predetermined phase angle relative to the sampling clock (205) for sampling the signal (132), wherein the second SERDES unit (400) is loaded with a second basic clock (450) shifted by a predetermined phase angle relative to the basic clock (210), and wherein in the determining step (730) the point in time is also determined using the second data word (420), and in the determining step (730) the values of the data word (220) and the second data word (420) are alternately combined into a value of a total word (500), wherein the point in time is also determined using the total word (500).

2. The method (700) of claim 1, wherein in the generating step (720), the synchronization of the sampling clock (205) with the base clock (210) occurs before the SERDES unit (300) is loaded with the sampling clock (205), wherein the sampling clock (205) and the base clock (210) are both derived from a signal provided by a clock generator.

3. The method (700) according to one of the preceding claims, wherein in the generating step (720) a further data word (605) representing the signal (132) is generated also using a deserializer of a further SERDES unit (600), wherein the further data word (605) has a plurality of bits, and wherein the further SERDES unit (600) is further loaded with a sampling clock (205) for sampling the signal (132) that is higher than the base clock (210), and wherein the SERDES unit (300) and the further SERDES unit (600) are each sensitive to a different sign of the steepness of an edge in the signal (132), and wherein in the determining step (730) the point in time of the edge (200) in the signal (132) is determined using the further data word (605) and the base clock (210) in the evaluation unit (125), in order to measure the point in time of the edge (200) in the signal (132).

4. A method (700) according to claim 3, characterized in that in the generating step (720) the further SERDES unit (600) is designed to output a further data word (605) having a different number of bits than the data word (220).

5. The method (700) according to one of claims 3 or 4, wherein in the generating step (720) an additional data word (620) representing the signal (132) is generated using a deserializer of an additional SERDES unit (610), having a plurality of bits, wherein the additional SERDES unit (610) is loaded with an additional sampling clock shifted by a preset phase angle relative to the sampling clock (205) for sampling the signal (132), and wherein in the determining step (730) the point in time is also determined using the additional data word (620).

6. The method (700) according to one of the preceding claims, wherein the signal in the reading step (710) is delayed before being fed into at least one SERDES unit (300,400,600,610).

7. Method (750) for determining a transmission time and/or a pulse width of a test signal (130,130'), wherein one or more points in time of a rising and/or falling edge of the test signal (130) to be emitted and/or one or more points in time of a rising and/or falling edge of the received test signal (130') are determined using the steps (710,720,730) of the method (700) according to one of claims 1 to 6, wherein the points in time of the rising and/or falling edge are also used in the determining step (760) for determining the transmission time.

8. The method (800) of claim 7, wherein the transmission time of a laser pulse (130,130') of a traffic monitoring device (100) is measured as a test signal (130, 130').

9. An evaluation unit (125) for measuring a point in time of an edge (200) in a signal (130), wherein the evaluation unit (125) has a device (135,140,150,300,320,330) which is designed to carry out and/or control the steps (710,720,730) of the method (700) according to claims 1 to 6.

10. The evaluation unit (125) according to claim 9, characterized in that it is designed as a digital integrated circuit.

11. The evaluation unit (125) according to one of claims 9 or 10, characterized in that at least one clock input interface is provided for feeding the basic clock (210) and/or the sampling clock (205) from outside the evaluation unit (125) to the evaluation unit (125).

12. A computer program adapted to perform and/or control the steps (710,720,730) of the method (700) according to one of claims 1 to 6.

13. A machine-readable storage medium on which a computer program according to claim 12 is stored.