CN110224747B - Method for correcting photoelectric transmission power - Google Patents
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Abstract
The invention provides a correction method of photoelectric transmission power. The correction method comprises the following steps: driving the photoelectric conversion element through the light sensing device, receiving a plurality of induction values through the photoelectric conversion element and storing the induction values into a receiving temporary storage of the light sensing device; and performing a correction operation on the plurality of first byte values and the plurality of second byte values according to whether the plurality of first byte values of the plurality of sensing values are the same and the distribution of the plurality of second byte values of the plurality of sensing values to obtain the sensing memory value.
Description
Technical Field
The invention relates to a correction method related to photoelectric transmission power. And more particularly to a method for optical network device correction with respect to optical and electrical transmission power.
Background
In the optical fiber network equipment, the transmission power and the receiving power of the optical sensing device need to be corrected in the production process, and the correction mechanism is to read the induction value of the photoelectric transmission power from an external light emitting instrument through the optical sensing device. And comparing the read induction value with an actual power value transmitted to the light sensing device by an external light emitting instrument so as to adjust the light sensing device.
However, the register for transmitting power and receiving power of the optical sensing device is mainly composed of two bytes, and one byte can only be read by one access of the I2C interface, so that the read value is divided into two times and determined as the correct power. This may cause an Overflow problem of the register value due to the read time difference. For example, when the receiving register receives the sensing values "04 FE" and "0501" of two bytes, it indicates that the sensing value is overflowing. However, if the integrated circuit bus interface can only read one byte at a time, a very large error of "0401" or "05 FE" may be read. This causes a misalignment of the transmission power calibration, which reduces the production yield.
Disclosure of Invention
The invention provides a correction method of photoelectric transmission power for optical fiber network equipment, which is used for eliminating induction value misjudgment caused by overflow.
The correction method of the photoelectric transmission power comprises the following steps: driving the photoelectric conversion element through the light sensing device, receiving a plurality of induction values through the photoelectric conversion element and storing the induction values into a receiving temporary storage of the light sensing device; and performing a correction operation on the plurality of first byte values and the plurality of second byte values according to whether the plurality of first byte values of the plurality of sensing values are the same and the distribution of the plurality of second byte values of the plurality of sensing values to obtain the sensing memory value. The correction operation includes combining one of the first byte values with one of the second byte values, or selecting one of the first byte values to combine with an average of the second byte values.
In an embodiment of the invention, the first byte is an upper byte in the binary byte data format. The second byte is a lower byte in the binary byte data format.
In an embodiment of the invention, the step of driving the photoelectric conversion element by the photo sensing device, receiving the plurality of sensing values by the photoelectric conversion element and storing the plurality of sensing values in a receiving register of the photo sensing device includes enabling the photoelectric conversion element to receive the first sensing value, storing the first sensing value in the receiving register by the photo sensing device, and receiving the first sensing value stored in the register; and enabling the photoelectric conversion element to receive the second induction value, storing the induction value into the receiving temporary storage through the optical sensing device, and receiving the second induction value stored in the receiving temporary storage.
In an embodiment of the invention, the correcting method further includes setting a first threshold and a second threshold of the second bit set, wherein the first threshold is greater than the second threshold.
In an embodiment of the invention, the step of performing a correction operation on the plurality of first bit values and the plurality of second bit values to obtain the sense memory value according to whether the plurality of first bit values of the plurality of sense values are the same and a distribution of the plurality of second bit values of the plurality of sense values includes: when the plurality of first bit group values are not identical and the plurality of second bit group values have second bit group values larger than the first threshold value and second bit group values smaller than the second threshold value, combining the minimum first bit group value in the plurality of first bit group values and the maximum second bit group value in the plurality of second bit group values into a first group value; combining a largest first bit set value of the plurality of first bit set values and a smallest second bit set value of the plurality of second bit set values into a second set value; and obtaining an average value of the first set of values and the second set of values to obtain the sensing memory value.
In an embodiment of the invention, the step of performing a correction operation on the plurality of first bit values and the plurality of second bit values to obtain the sense memory value according to whether the plurality of first bit values of the plurality of sense values are the same and a distribution of the plurality of second bit values of the plurality of sense values includes: when the first byte values are not completely the same and the second byte values are all larger than the first threshold, obtaining the second byte average value of the second byte values; and combining the minimum first bit group value of the plurality of first bit group values with the average value of the second bit group to obtain the sensing memory value.
In an embodiment of the invention, the step of performing a correction operation on the plurality of first bit values and the plurality of second bit values to obtain the sense memory value according to whether the plurality of first bit values of the plurality of sense values are the same and a distribution of the plurality of second bit values of the plurality of sense values includes: when the plurality of first bit values are not completely the same and the plurality of second bit values are all smaller than the second threshold value, obtaining a second bit average value of the plurality of second bit values; and combining the maximum first bit group value and the second bit group average value in the plurality of first bit group values to obtain the sensing memory value.
In an embodiment of the invention, the step of performing a correction operation on the plurality of first bit values and the plurality of second bit values to obtain the sense memory value according to whether the plurality of first bit values of the plurality of sense values are the same and a distribution of the plurality of second bit values of the plurality of sense values includes: when the first bit group values are the same and there is no second bit group value larger than the first threshold value and no second bit group value smaller than the second threshold value in the second bit group values, obtaining a second bit group average value of the second bit group values; and combining one of the first byte values with the average value of the second byte to obtain the sensing memory value.
In an embodiment of the invention, the correction method further includes storing the sensor memory value in a sensor register of the photo sensing device.
In view of the above, the method for correcting the photoelectric transmission power of the present invention receives a plurality of sensing values through the photoelectric conversion device and stores the plurality of sensing values in a plurality of receiving registers, respectively. And performing a correction operation on the plurality of first byte values and the plurality of second byte values according to whether the plurality of first byte values of the plurality of sensing values are the same and the distribution of the plurality of second byte values of the plurality of sensing values to obtain a sensing memory value so as to eliminate the misjudgment of the sensing value caused by overflow.
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic diagram of a system for correcting transmission power of an optical fiber according to an embodiment of the present invention.
Fig. 2A to fig. 2E are flow charts of a method for correcting an optical-electrical transmission power according to an embodiment of the invention.
Wherein the reference numerals are as follows:
100: optical fiber transmission power correction system
110: light sensing device
112: receiving temporary storage
114: sensing register
120: photoelectric conversion element
130: arithmetic device
And (3) CP: sensing memory values
SP1, SP2, SP 3: induction value
SP1_ M, SP2_ M, SP3_ M: first byte value
SP1_ L, SP2_ L, SP3_ L: second byte value
S210, S220_1, S221 to S229: step (ii) of
Detailed Description
Referring to fig. 1, fig. 1 is a schematic diagram illustrating an optical fiber transmission power correction system according to an embodiment of the invention. The optical fiber transmission power correction system 100 of the present embodiment is applicable to an optical fiber network device (not shown). The optical network device may be, for example, a Hub (Hub), a modem or a card. The optical fiber transmission power correction system 100 of fig. 1 includes an optical sensing device 110, a photoelectric conversion element 120, and a computing device 130. The photo sensing device 110 includes a receiving register 112 and a sensing register 114. In this embodiment, the optical sensing device 110 may be disposed in an optical fiber network device. In the present embodiment, the light sensing device 110 is actually a laser chip photoelectric conversion element 120, which can receive a light signal provided by a light emitting instrument (not shown) and convert the light signal into a digital signal. A light emitting instrument is any light source instrument that provides an optical signal of stable optical power. In the present embodiment, the photoelectric conversion element 120 may be a Bi-Directional Optical Sub-Assembly (BOSA), a Receiving Optical module (ROSA), a Transmitting Optical Sub-Assembly (TOSA), or the like, but the present invention is not limited thereto.
The receiving register 112 and the sensing register 114 may be any type of fixed or removable Random Access Memory (RAM), read-only memory (ROM), flash memory (flash memory), or the like or combination thereof. The receiving register in this embodiment is exemplified by one. In the present invention, the number of the receiving registers may be multiple, and is not limited to this embodiment.
In the embodiment, the computing Device 130 may be a Central Processing Unit (CPU), or other Programmable general purpose or special purpose Microprocessor (Microprocessor), Digital Signal Processor (DSP), Programmable controller, Application Specific Integrated Circuit (ASIC), Programmable Logic Device (PLD), or other similar devices or combinations thereof, which can be loaded with and execute a computer program to perform corresponding operation functions.
In the present embodiment, the photoelectric conversion element 120 receives the sensing value SP1, stores the sensing value SP1 in the receiving register 112 through the photo sensing device 110, and receives the sensing value SP1 stored in the receiving register 112 through the computing device 130. Next, the photoelectric conversion element 120 receives the sensing value SP2, stores the sensing value SP2 in the receiving register 112 through the photo sensing device 110, and receives the sensing value SP2 stored in the receiving register 112 through the computing device 130. The photoelectric conversion device 120 can then receive the sensing value SP3, store the sensing value SP3 in the receiving register 112 via the photo sensing device 110, receive the sensing value SP3 stored in the receiving register 112 via the computing device 130, and so on. For convenience of description, in this embodiment, the sensing values are received 3 times in sequence, and a preferred embodiment may be to receive the sensing values 10 times in sequence, for example. The number of times of receiving the sensing value is multiple, and is not limited by the embodiment.
The computing device 130 performs a correction operation on the sensed values SP1, SP2, SP3 to obtain the sensed memory value CP. In this embodiment, the computing device 130 may be a communication interface of other specifications such as an ethernet (ethernet cable) communication interface, an optical fiber communication interface, a Universal Serial Bus (USB), a wireless network communication interface, etc. to receive the sensed values SP1, SP2, and SP 3. Although the invention is not so limited.
The method of generating the sense memory value is described in detail below. Referring to fig. 1 and fig. 2A to fig. 2E, fig. 2A to fig. 2E are flowcharts of a method for correcting an optical electrical transmission power according to an embodiment of the invention. First, in step S210 of fig. 2A, the computing device 130 drives the photoelectric conversion element 120 through the photo sensing device 110, sequentially receives the sensing values SP1, SP2, SP3 of the optical signal provided by the external light emitting apparatus through the photoelectric conversion element 120, and stores the sensing values SP1, SP2, SP3 into the receiving register 112 of the photo sensing device 110. The computing device 130 obtains the sensing value SP1 after the sensing device 110 receives the sensing value SP1, obtains the sensing value SP2 after the sensing device 110 receives the sensing value SP2, and obtains the sensing value SP3 after the sensing device 110 receives the sensing value SP 3. In step S220, the sensing values stored in the receiving register 112 after the computing device 130 starts to perform the correction operation on the first and second bit set values of the sensing values SP1, SP2, SP3 are in the form of binary data. Therefore, in the present embodiment, the sensing value SP1 has a first bit set value SP1_ M and a second bit set value SP1_ L. The sense value SP2 has a first bit set value SP2_ M and a second bit set value SP2_ L. The sense value SP3 has a first bit set value SP3_ M and a second bit set value SP3_ L. The first byte value SP1_ M, SP2_ M, SP3_ M is the upper byte in the binary byte data format, and the second byte value SP1_ L, SP2_ L, SP3_ L is the lower byte in the binary byte data format. After the computing device 130 obtains the first tuple value SP1_ M, SP2_ M, SP3_ M and the second tuple value SP1_ L, SP2_ L, SP3_ L, the process proceeds to step S220_ 1. The computing device 130 performs a modification operation on the first tuple value SP1_ M, SP2_ M, SP3_ M and the second tuple value SP1_ L, SP2_ L, SP3_ L according to whether the first tuple value SP1_ M, SP2_ M, SP3_ M of the sensing values is the same and the distribution of the second tuple value SP1_ L, SP2_ L, SP3_ L, thereby obtaining the sensing memory value CP.
Referring to fig. 1 and 2B, in the case of step S220_1, when the computing device 130 determines that the first bin values SP1_ M, SP2_ M, SP3_ M are not completely the same, that is, when one of the first bin values SP1_ M, SP2_ M, SP3_ M is different from the other first bin values, and when the second bin value SP1_ L, SP2_ L, SP3_ L has both the second bin value greater than the first threshold and the second bin value smaller than the second threshold, the process proceeds to step S221 of fig. 2B. In step S221, the sense values SP1, SP2, and SP3 are overflowed during reception. Based on the above-mentioned determination result, when the computing device 130 starts to perform the correction operation, the computing device 130 may combine one of the first tuple values SP1_ M, SP2_ M, SP3_ M and one of the second tuple values SP1_ L, SP2_ L, SP3_ L.
In the present embodiment, the first threshold and the second threshold can be set by the computing device 130 according to the specification requirement of the product. And the first critical value is larger than the second critical value.
In step S221 of fig. 2B, the optical fiber transmission power correction system 100 can combine the minimum first bit set value of the first bit set value SP1_ M, SP2_ M, SP3_ M and the maximum second bit set value of the second bit set value SP1_ L, SP2_ L, SP3_ L into a first set value through the computing device 130. In step S222, the maximum first byte value of the first byte values SP1_ M, SP2_ M, SP3_ M and the minimum second byte value of the second byte values SP1_ L, SP2_ L, SP3_ L are combined into a second group of values by the operation device 130.
For example, the first threshold may be set to "E0". The second threshold value may be set to "20". The sensing value SP1 received by the photo sensing device 110 is "04 FE", wherein the first tuple value SP1_ M of the sensing value SP1 is "04" and the second tuple value SP1_ L of the sensing value SP1 is "FE". The sensing value SP2 received by the photo sensing device 110 is "0501", where the first binary value SP2_ M of the sensing value SP2 is "05" and the second binary value SP2_ L of the sensing value SP2 is "01". The sensing value SP3 received by the photo sensing device 110 is "0504", where the first binary value SP3_ M of the sensing value SP2 is "05" and the second binary value SP3_ L of the sensing value SP3 is "04". In step S222, the computing device 130 determines that the first byte values SP1_ M, SP2_ M, SP3_ M are not identical. The operation device 130 can also determine that the second bit set value SP1_ L is greater than the first threshold and the second bit set value SP2_ L, SP3_ L is less than the first threshold among the second bit set values SP1_ L, SP2_ L, SP3_ L. In step S221, the computing device 130 combines the minimum first byte value SP1_ M of the first byte values SP1_ M, SP2_ M, SP3_ M and the maximum second byte value SP1_ L of the second byte values SP1_ L, SP2_ L, SP3_ L into a first group of values. The first set of values is therefore "04 FE".
In step S222, the maximum first tuple value SP2_ M (or SP3_ M) among the first tuple values SP1_ M, SP2_ M, SP3_ M and the minimum second tuple value SP2_ L among the second tuple values SP1_ L, SP2_ L, SP3_ L are combined into a second group of values by the operation device 130. The second set of values is therefore "0501". Next, in step S223, the optical fiber transmission power correction system 100 can obtain an average value of the first set of values and the second set of values through the computing device 130 to obtain the sense memory value CP. In this example, the value CP of the sensing memory obtained by the optical fiber transmission power correction system 100 is "0500", the optical fiber transmission power correction system 100 compares the obtained value CP of the sensing memory with an actual power value transmitted to the optical sensing device by an external light emitting instrument to obtain a power comparison result, and adjusts the optical sensing device 110 according to the power comparison result.
Further, in step S223 of the present embodiment, the optical fiber transmission power correction system 100 can configure the sensing register 114. The optical fiber transmission power correction system 100 can store the sensing memory value CP to the sensing register 114 through the computing device 130. In the embodiment of fig. 1, the sensing register 114 is disposed in the photo sensing device 110. In other embodiments, the sensing register 114 may be disposed outside the photo sensing device 110. In this embodiment, the computing device 130 may store the sense memory value CP in the sense register 114 through an ethernet (ethernet cable) communication interface, an optical fiber communication interface, a Universal Serial Bus (USB), a wireless network communication interface, or other communication interfaces. Although the invention is not so limited.
Referring to fig. 1 and fig. 2A again, in the case of the determination in step S220_1, when the computing device 130 determines that the first bin values SP1_ M, SP2_ M, SP3_ M are not completely the same, and in the special case that the second bin values SP1_ L, SP2_ L, SP3_ L are all greater than the first threshold, the process proceeds to step S224 in fig. 2C. Based on the above-mentioned judgment result, the computing device 130 can determine one of the first byte values SP1_ M, SP2_ M, SP3_ M to be combined with the average value of the second byte values SP1_ L, SP2_ L, SP3_ L when the correction operation is started. In step S224, the optical fiber transmission power correction system 100 can obtain the second bit-tuple average value of the first bit-tuple values SP1_ L, SP2_ L, SP3_ L through the computing device 130. In step S225, the minimum first byte value and the second byte average value of the first byte values SP1_ M, SP2_ M, SP3_ M are combined by the computing device 130 to obtain the sense memory value CP. The optical fiber transmission power correction system 100 compares the obtained value CP of the sensing memory with an actual power value transmitted to the optical sensing device by an external light emitting instrument to obtain a power comparison result, and adjusts the optical sensing device 110 according to the power comparison result.
In another special case, when the computing device 130 determines that the first bin values SP1_ M, SP2_ M, SP3_ M are not identical, and when the second bin values SP1_ L, SP2_ L, SP3_ L are all smaller than the second threshold, the process goes to step S226 in fig. 2D. In step S226, the optical fiber transmission power correction system 100 can obtain the second byte average value of the second byte values SP1_ L, SP2_ L, SP3_ L through the computing device 130. Based on the above-mentioned judgment result, the computing device 130 can determine one of the first byte values SP1_ M, SP2_ M, SP3_ M to be combined with the average value of the second byte values SP1_ L, SP2_ L, SP3_ L when the correction operation is started. And in step S227, the maximum first byte value and the second byte average value of the first byte values SP1_ M, SP2_ M, SP3_ M are combined by the operation device 130 to obtain the sense memory value CP. The fiber transmission power correction system 100 can also store the sensing memory value CP to the sensing register 114 through the computing device 130. The optical fiber transmission power correction system 100 compares the obtained value CP of the sensing memory with an actual power value transmitted to the optical sensing device by an external light emitting instrument to obtain a power comparison result, and adjusts the optical sensing device 110 according to the power comparison result.
Referring to fig. 2 and fig. 2A again, when the computing device 130 determines in step S220_1 that the first bit set values SP1_ M, SP2_ M, SP3_ M are the same, and there are no second bit set values greater than the first threshold and no second bit set values less than the second threshold in the second bit set values SP1_ L, SP2_ L, SP3_ L, the process proceeds to step S228 in fig. 2E. In other words, when the first bin values SP1_ M, SP2_ M, SP3_ M are the same and the second bin values SP1_ L, SP2_ L, SP3_ L are both between the first threshold and the second threshold, step S228 is performed. Such a situation belongs to a normal situation in which no overflow occurs, based on the result of the above-described situation judgment. The computing device 130 determines one of the first bin values SP1_ M, SP2_ M, SP3_ M to be combined with the average value of the second bin values SP1_ L, SP2_ L, SP3_ L. In step S228, the optical fiber transmission power correction system 100 can obtain the second byte average value of the second byte values SP1_ L, SP2_ L, SP3_ L through the computing device 130. In step S229, one of the first tuple values SP1_ M, SP2_ M, SP3_ M and the second tuple average value are combined by the computing device 130 to obtain the sense memory value CP. The optical fiber transmission power correction system 100 compares the obtained value CP of the sensing memory with an actual power value transmitted to the optical sensing device by an external light emitting instrument to obtain a power comparison result, and adjusts the optical sensing device 110 according to the power comparison result. In some embodiments, a third threshold may also be established. In step S220_1, the computing device 130 may determine that the difference between the maximum value and the minimum value of the second bit set values SP1_ L, SP2_ L, SP3_ L is within the third threshold (e.g., 32) after decimal conversion, in addition to determining that the first bit set values SP1_ M, SP2_ M, SP3_ M are the same. Step S228 is entered.
In the embodiments of fig. 1 and 2A to 2E, there may be cases where the determination in step S220_1 cannot be determined, other than the overflow case, the special case, and the normal case. When the condition is not determined, the step of the correction method of the optical fiber transmission power correction system 100 may return to step S210, and the sensing values SP1, SP2, and SP3 are received by the photoelectric conversion element 120 again.
In summary, the method for correcting the optical-electrical transmission power of the present invention can receive a plurality of sensing values through the optical-electrical conversion device, and store the plurality of sensing values in the receiving register. The operation device performs correction operation on the plurality of first bit values and the plurality of second bit values according to whether the plurality of first bit values of the plurality of sensing values are the same and the distribution of the plurality of second bit values of the plurality of sensing values to obtain a sensing memory value, so as to eliminate sensing value misjudgment caused by overflow, and improve the correction accuracy and the production yield of the transmission power in the production process.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (9)
1. A correction method of optical fiber transmission power is used for an optical fiber network device, the optical fiber network device comprises an optical sensing device and a photoelectric conversion element, and the correction method comprises the following steps:
driving the photoelectric conversion element through the optical sensing device, receiving a plurality of induction values through the photoelectric conversion element and storing the induction values into a receiving temporary register of the optical sensing device; and
performing a correction operation on the first and second bit values to obtain an induced memory value according to whether the first bit values of the plurality of induced values are the same and the distribution of the second bit values of the plurality of induced values,
wherein the modifying operation comprises combining one of the first and second bit set values or selecting and combining an average of the first and second bit set values.
2. The method of claim 1, wherein the first byte is a higher byte in a binary byte data format, and wherein the second byte is a lower byte in the binary byte data format.
3. The correction method as claimed in claim 1, wherein the step of driving the photoelectric conversion element by the photo sensing device, receiving the sensing value by the photoelectric conversion element and storing the sensing value in the receiving register of the photo sensing device comprises:
the photoelectric conversion element receives a first induction value, the induction value is stored in the receiving temporary storage through the optical sensing device, and the first induction value stored in the receiving temporary storage is received;
the photoelectric conversion element receives a second sensing value, the sensing value is stored in the receiving temporary storage through the optical sensing device, and the second sensing value stored in the receiving temporary storage is received.
4. The correction method according to claim 1, further comprising:
a first threshold and a second threshold of the second bit set are set, wherein the first threshold is greater than the second threshold.
5. The method of claim 4, wherein the step of performing the correction operation on the first tuple value and the second tuple value to obtain the sense memory value according to whether the first tuple value of the plurality of sense values is the same and the distribution of the second tuple value of the plurality of sense values comprises:
combining a minimum first bit set value of the first bit set values and a maximum second bit set value of the second bit set values into a first set value when the first bit set values are not identical and the second bit set values have second bit set values larger than the first threshold and second bit set values smaller than the second threshold;
combining a largest first bit set value of the first bit set values and a smallest second bit set value of the second bit set values into a second set of values; and
an average of the first set of values and the second set of values is obtained to obtain the value of the sense memory.
6. The method of claim 4, wherein the step of performing the correction operation on the first tuple value and the second tuple value to obtain the sense memory value according to whether the first tuple value of the plurality of sense values is the same and the distribution of the second tuple value of the plurality of sense values comprises:
when the first byte values are not completely the same and the second byte values are all larger than the first threshold, obtaining a second byte average value of the second byte values; and
the minimum first bit group value in the first bit group values is combined with the average value of the second bit group to obtain the sensing memory value.
7. The method of claim 4, wherein the step of performing the correction operation on the first tuple value and the second tuple value to obtain the sense memory value according to whether the first tuple value of the plurality of sense values is the same and the distribution of the second tuple value of the plurality of sense values comprises:
when the first byte values are not completely the same and the second byte values are all smaller than the second threshold, obtaining a second byte average value of the second byte values; and
combining the maximum first bit group value in the first bit group values and the second bit group average value to obtain the sensing memory value.
8. The method of claim 4, wherein the step of performing the correction operation on the first tuple value and the second tuple value to obtain the sense memory value according to whether the first tuple value of the plurality of sense values is the same and the distribution of the second tuple value of the plurality of sense values comprises:
when the first bit set values are the same and there is no second bit set value greater than the first threshold and no second bit set value less than the second threshold, obtaining a second bit set average of the second bit set values; and
combining one of the first byte values with the second byte average value to obtain the sensing memory value.
9. The correction method according to claim 1, further comprising:
storing the sensor memory value to a sensor register of the optical sensor device.
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| TWI674772B (en) | 2019-10-11 |
| TW201939912A (en) | 2019-10-01 |
| CN110224747A (en) | 2019-09-10 |
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