CN114070406B

CN114070406B - Optical module and optical module operation life early warning method

Info

Publication number: CN114070406B
Application number: CN202111393622.1A
Authority: CN
Inventors: 王凤来; 姜双弟; 岳春云
Original assignee: Hisense Broadband Multimedia Technology Co Ltd
Current assignee: Hisense Broadband Multimedia Technology Co Ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2023-03-31
Anticipated expiration: 2041-11-23
Also published as: CN114070406A

Abstract

The application discloses an optical module and an optical module operation life early warning method, which comprises the following steps: the upper shell and the lower shell cover a packaging cavity formed by closing; the circuit board is arranged in the wrapping cavity, and one end of the circuit board is provided with a golden finger connected with an upper computer. And the light emitting chip is arranged in the packaging cavity and used for emitting light. And the light detector is used for detecting the optical power of the light emitted by the light emitting chip. And the MCU is connected with the optical detector, arranged on the circuit board and used for calculating the service life of the optical module according to the optical power, the operation working time of the optical module corresponding to the optical power, the initial optical power and the preset threshold optical power after the optical module operates for a period of time. The optical module life cycle prediction algorithm is realized through the power-on operation time counting function and the optical power real-time monitoring function of the optical module, and the calculated data is read by the upper computer for the customer to evaluate and early warn, so that the competitiveness of the optical module product is improved.

Description

Optical module and early warning method for operation life of optical module

Technical Field

The application relates to the technical field of communication, in particular to an optical module and an early warning method for the operation life of the optical module.

Background

With the development of new services and application modes such as cloud computing, mobile internet, video and the like, the development and progress of the optical communication technology becomes more and more important. In the optical communication technology, an optical module is a tool for realizing the interconversion of optical signals, and is one of the key components in optical communication equipment, and the transmission rate of the optical module is continuously increased along with the development requirement of the optical communication technology.

The running state of the optical module directly influences the transmission rate of the optical module, and the running state of the optical module can be known by monitoring the temperature, the power supply voltage, the laser bias current and the transmitting and receiving optical power of the optical module. With the increase of the power-on operation time of the optical module, the optical power of the optical emission submodule in the optical module is gradually attenuated, if the optical power is seriously attenuated, the signal transmission of the optical module is influenced, the optical module fails, and the operation life of the optical module is changed from the beginning to the failure of the optical module. And a user can know the residual running time of the optical module in time, so that the user experience is improved, and the product competitiveness is improved.

Disclosure of Invention

The application provides an optical module and an optical module operation life early warning method, which are used for providing an optical module operation life alarm.

In order to solve the technical problem, the embodiment of the application discloses the following technical scheme:

in one aspect, an embodiment of the present application discloses an optical module, including: an upper housing;

the lower shell is covered with the upper shell to form a wrapping cavity;

the circuit board is arranged in the packaging cavity, and one end of the circuit board is provided with a golden finger which is connected with an upper computer;

the light emitting chip is arranged in the packaging cavity and used for emitting light;

the optical detector is used for detecting the optical power of the light emitted by the light emitting chip;

and the MCU is connected with the optical detector, arranged on the circuit board and used for calculating the service life of the optical module according to the optical power, the operation working time of the optical module corresponding to the optical power, the initial optical power and the preset threshold optical power after the optical module operates for a period of time.

Compared with the prior art, the beneficial effect of this application:

the application discloses optical module includes: the upper shell and the lower shell cover a packaging cavity formed by closing; the circuit board is arranged inside the wrapping cavity, and one end of the circuit board is provided with a golden finger connected with an upper computer. And the light emitting chip is arranged in the packaging cavity and used for emitting light. And the light detector is used for detecting the optical power of the light emitted by the light emitting chip. And the MCU is connected with the optical detector, arranged on the circuit board and used for calculating the service life of the optical module according to the optical power and the optical module operation working time corresponding to the optical power. The optical module life cycle prediction algorithm is realized through the power-on operation time counting function and the optical power real-time monitoring function of the existing optical module, and the calculated data is read by the upper computer for the customer to evaluate and early warn, so that the competitiveness of the optical module product is improved.

On the other hand, the application discloses an optical module operation life early warning method, which comprises the following steps:

acquiring the optical power of an optical module and the operation working time corresponding to the optical power;

calculating an optical power attenuation formula according to the optical power and the operation working time corresponding to the optical power;

and calculating the service life of the optical module according to the optical power attenuation formula and the preset threshold optical power.

Compared with the prior art, the beneficial effect of this application:

the application discloses an optical module operation life early warning method, which is implemented by obtaining the current optical power of an optical module and the operation working time corresponding to the current optical power. And calculating an optical power attenuation formula according to the current optical power and the operation working time corresponding to the current optical power. And calculating the service life of the optical module according to the optical power attenuation formula and the preset threshold optical power. The optical module life cycle prediction algorithm is realized through the power-on operation time counting function and the optical power real-time monitoring function of the optical module, and the calculated data is read by the upper computer for the customer to evaluate and early warn, so that the competitiveness of the optical module product is improved.

Drawings

In order to more clearly illustrate the technical solutions in the present disclosure, the drawings needed to be used in some embodiments of the present disclosure will be briefly described below, and it is apparent that the drawings in the following description are only drawings of some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art according to the drawings. Furthermore, the drawings in the following description may be considered as schematic diagrams, and do not limit the actual size of products, the actual flow of methods, the actual timing of signals, and the like, involved in the embodiments of the present disclosure.

FIG. 1 is a connection diagram of an optical communication system according to some embodiments;

FIG. 2 is a block diagram of an optical network terminal according to some embodiments;

FIG. 3 is a block diagram of a light module according to some embodiments;

FIG. 4 is an exploded view of a light module according to some embodiments;

FIG. 5 is a partial block diagram of a light module according to some embodiments;

fig. 6 is a schematic diagram of an optical module operation life warning method according to some embodiments.

Detailed Description

The technical solutions in some embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided by the present disclosure belong to the protection scope of the present disclosure.

Unless the context requires otherwise, throughout the description and the claims, the term "comprise" and its other forms, such as the third person's singular form "comprising" and the present participle form "comprising" are to be interpreted in an open, inclusive sense, i.e. as "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the terms used above are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be included in any suitable manner in any one or more embodiments or examples.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, "a plurality" means two or more unless otherwise specified.

In describing some embodiments, the expressions "coupled" and "connected," along with their derivatives, may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more elements are in direct physical or electrical contact with each other. As another example, some embodiments may be described using the term "coupled" to indicate that two or more elements are in direct physical or electrical contact. However, the terms "coupled" or "communicatively coupled" may also mean that two or more elements are not in direct contact with each other, but yet still co-operate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents herein.

"at least one of A, B and C" has the same meaning as "at least one of A, B or C" and includes the following combinations of A, B and C: a alone, B alone, C alone, a combination of A and B, A and C in combination, B and C in combination, and A, B and C in combination.

"A and/or B" includes the following three combinations: a alone, B alone, and a combination of A and B.

The use of "adapted to" or "configured to" herein is meant to be an open and inclusive language that does not exclude devices adapted to or configured to perform additional tasks or steps.

As used herein, "about," "approximately" or "approximately" includes the stated value as well as average values within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art in view of the measurement in question and the error associated with measuring the particular quantity (i.e., the limitations of the measurement system).

In the optical communication technology, light is used to carry information to be transmitted, and an optical signal carrying the information is transmitted to information processing equipment such as a computer through information transmission equipment such as an optical fiber or an optical waveguide, so as to complete information transmission. Because the optical signal has the passive transmission characteristic when being transmitted through the optical fiber or the optical waveguide, the information transmission with low cost and low loss can be realized. Further, since a signal transmitted by an information transmission device such as an optical fiber or an optical waveguide is an optical signal and a signal that can be recognized and processed by an information processing device such as a computer is an electrical signal, it is necessary to perform interconversion between the electrical signal and the optical signal in order to establish an information connection between the information transmission device such as an optical fiber or an optical waveguide and the information processing device such as a computer.

The optical module realizes the function of interconversion between the optical signal and the electrical signal in the technical field of optical fiber communication. The optical module comprises an optical port and an electrical port, the optical module realizes optical communication with information transmission equipment such as optical fibers or optical waveguides and the like through the optical port, realizes electrical connection with an optical network terminal (such as an optical modem) through the electrical port, and the electrical connection is mainly used for realizing power supply, I2C signal transmission, data signal transmission, grounding and the like; the optical network terminal transmits the electric signal to the computer and other information processing equipment through a network cable or a wireless fidelity (Wi-Fi).

Fig. 1 is a connection diagram of an optical communication system according to some embodiments. As shown in fig. 1, the optical communication system mainly includes a remote server 1000, a local information processing device 2000, an optical network terminal 100, an optical module 200, an optical fiber 101, and a network cable 103;

one end of the optical fiber 101 is connected to the remote server 1000, and the other end is connected to the optical network terminal 100 through the optical module 200. The optical fiber itself can support long-distance signal transmission, for example, signal transmission of thousands of meters (6 km to 8 km), on the basis of which if a repeater is used, ultra-long-distance transmission can be theoretically achieved. Therefore, in a typical optical communication system, the distance between the remote server 1000 and the optical network terminal 100 may be several kilometers, tens of kilometers, or hundreds of kilometers.

One end of the network cable 103 is connected to the local information processing device 2000, and the other end is connected to the optical network terminal 100. The local information processing apparatus 2000 may be any one or several of the following apparatuses: router, switch, computer, cell-phone, panel computer, TV set etc..

The physical distance between the remote server 1000 and the optical network terminal 100 is greater than the physical distance between the local information processing apparatus 2000 and the optical network terminal 100. The connection between the local information processing device 2000 and the remote server 1000 is completed by an optical fiber 101 and a network cable 103; and the connection between the optical fiber 101 and the network cable 103 is completed by the optical module 200 and the optical network terminal 100.

The optical module 200 includes an optical port and an electrical port. The optical port is configured to connect with the optical fiber 101, so that the optical module 200 establishes a bidirectional optical signal connection with the optical fiber 101; the electrical port is configured to be accessed into the optical network terminal 100, so that the optical module 200 establishes a bidirectional electrical signal connection with the optical network terminal 100. The optical module 200 converts an optical signal and an electrical signal to each other, so that a connection is established between the optical fiber 101 and the optical network terminal 100. For example, an optical signal from the optical fiber 101 is converted into an electrical signal by the optical module 200 and then input to the optical network terminal 100, and an electrical signal from the optical network terminal 100 is converted into an optical signal by the optical module 200 and input to the optical fiber 101.

The optical network terminal 100 includes a housing (housing) having a substantially rectangular parallelepiped shape, and an optical module interface 102 and a network cable interface 104 provided on the housing. The optical module interface 102 is configured to access the optical module 200, so that the optical network terminal 100 establishes a bidirectional electrical signal connection with the optical module 200; the network cable interface 104 is configured to access the network cable 103 such that the optical network terminal 100 establishes a bi-directional electrical signal connection with the network cable 103. The optical module 200 is connected to the network cable 103 via the optical network terminal 100. For example, the optical network terminal 100 transmits an electrical signal from the optical module 200 to the network cable 103, and transmits a signal from the network cable 103 to the optical module 200, so that the optical network terminal 100 can monitor the operation of the optical module 200 as an upper computer of the optical module 200. The upper computer of the Optical module 200 may include an Optical Line Terminal (OLT) and the like in addition to the Optical network Terminal 100.

The remote server 1000 establishes a bidirectional signal transmission channel with the local information processing device 2000 through the optical fiber 101, the optical module 200, the optical network terminal 100, and the network cable 103.

Fig. 2 is a structural diagram of an optical network terminal according to some embodiments, and fig. 2 only shows a structure of the optical module 100 related to the optical module 200 in order to clearly show a connection relationship between the optical module 200 and the optical network terminal 100. As shown in fig. 2, the optical network terminal 100 further includes a PCB circuit board 105 disposed in the housing, a cage 106 disposed on a surface of the PCB circuit board 105, and an electrical connector disposed inside the cage 106. The electrical connector is configured to access an electrical port of the optical module 200; the heat sink 107 has a projection such as a fin that increases a heat radiation area.

The optical module 200 is inserted into a cage 106 of the optical network terminal 100, the cage 106 holds the optical module 200, and heat generated by the optical module 200 is conducted to the cage 106 and then diffused by a heat sink 107. After the optical module 200 is inserted into the cage 106, an electrical port of the optical module 200 is connected to an electrical connector inside the cage 106, and thus the optical module 200 establishes a bidirectional electrical signal connection with the optical network terminal 100. Further, the optical port of the optical module 200 is connected to the optical fiber 101, and the optical module 200 establishes bidirectional electrical signal connection with the optical fiber 101.

Fig. 3 is a block diagram of a light module according to some embodiments, and fig. 4 is an exploded view of a light module according to some embodiments. As shown in fig. 3 and 4, the optical module 200 includes a housing, a circuit board 300 disposed in the housing, and an optical transceiver 400;

the shell comprises an upper shell 201 and a lower shell 202, wherein the upper shell 201 is covered on the lower shell 202 to form the shell with two

openings

204 and 205; the outer contour of the housing generally appears square.

In some embodiments of the present disclosure, the lower housing 202 includes a bottom plate and two lower side plates located at two sides of the bottom plate and disposed perpendicular to the bottom plate; the upper housing 201 includes a cover plate, and two upper side plates disposed on two sides of the cover plate and perpendicular to the cover plate, and is combined with the two side plates by two side walls, so that the upper housing 201 covers the lower housing 202.

The direction of the connecting line of the two

openings

204 and 205 may be the same as the length direction of the optical module 200, or may not be the same as the length direction of the optical module 200. For example, the opening 204 is located at an end (left end in fig. 3) of the optical module 200, and the opening 205 is also located at an end (right end in fig. 3) of the optical module 200. Alternatively, the opening 204 is located at an end of the optical module 200, and the opening 205 is located at a side of the optical module 200. Wherein, the opening 204 is an electrical port, and the gold finger of the circuit board 300 extends out of the electrical port 204 and is inserted into an upper computer (such as the optical network terminal 100); the opening 205 is an optical port configured to receive the external optical fiber 101, so that the optical fiber 101 is connected to an optical transceiver inside the optical module 200.

The upper shell 201 and the lower shell 202 are combined in an assembling mode, so that devices such as the circuit board 300 and the optical transceiver device can be conveniently installed in the shells, and the upper shell 201 and the lower shell 202 can form packaging protection for the devices. In addition, when the devices such as the circuit board 300 are assembled, the positioning components, the heat dissipation components and the electromagnetic shielding components of the devices are convenient to arrange, and the automatic implementation production is facilitated.

In some embodiments, the upper housing 201 and the lower housing 202 are generally made of metal materials, which is beneficial to achieve electromagnetic shielding and heat dissipation.

In some embodiments, the optical module 200 further includes an unlocking component 203 located on an outer wall of the housing of the optical module, and the unlocking component 203 is configured to implement a fixed connection between the optical module 200 and an upper computer or release the fixed connection between the optical module 200 and the upper computer.

Illustratively, the unlocking member 203 is located on the outer wall of the two lower side plates 2022 of the lower housing 202, and includes a snap-fit member that mates with a cage of an upper computer (e.g., the cage 106 of the optical network terminal 100). When the optical module 200 is inserted into the cage of the upper computer, the optical module 200 is fixed in the cage of the upper computer by the engaging member of the unlocking member 203; when the unlocking member 203 is pulled, the engaging member of the unlocking member 203 moves along with the unlocking member, and the connection relationship between the engaging member and the upper computer is changed, so that the engagement relationship between the optical module 200 and the upper computer is released, and the optical module 200 can be drawn out from the cage of the upper computer.

The circuit board 300 includes circuit traces, electronic components, and chips, and the electronic components and the chips are connected together by the circuit traces according to a circuit design to implement functions of power supply, electrical signal transmission, grounding, and the like. The electronic components may include, for example, capacitors, resistors, transistors, metal-Oxide-Semiconductor Field-Effect transistors (MOSFETs). The chip may include, for example, a Micro Controller Unit (MCU), a limiting amplifier (limiting amplifier), a Clock and Data Recovery (CDR) chip, a power management chip, and a Digital Signal Processing (DSP) chip.

The circuit board 300 is generally a rigid circuit board, which can also realize a bearing effect due to its relatively hard material, for example, the rigid circuit board can stably bear a chip; the rigid circuit board can also be inserted into an electric connector in the cage of the upper computer.

The circuit board 300 further includes a gold finger formed on an end surface thereof, the gold finger being composed of a plurality of pins independent of each other. The circuit board 300 is inserted into the cage 106 and electrically connected to the electrical connector in the cage 106 by the gold fingers 301. The gold fingers may be disposed on only one side of the circuit board 300 (e.g., the upper surface shown in fig. 4), or may be disposed on both upper and lower sides of the circuit board 300, so as to adapt to the situation where the requirement of the number of pins is large. The golden finger is configured to establish an electrical connection with the upper computer to realize power supply, grounding, I2C signal transmission, data signal transmission and the like. Of course, a flexible circuit board is also used in some optical modules. Flexible circuit boards are generally used in conjunction with rigid circuit boards to supplement the rigid circuit boards. .

The optical transceiver comprises an optical transmitter subassembly and an optical receiver subassembly.

In order to realize the prediction of the life cycle of the optical module, the light emission secondary module is provided with a light emission chip for emitting light. And the optical detector is used for monitoring the optical power emitted by the optical emission chip in real time. The MCU is connected with the optical detector and used for storing the optical power detected by the optical detector, calculating an optical power attenuation formula according to the optical power and the operation working time of the optical module, and calculating the operation service life of the optical module.

Specifically, the MCU records the current optical power of the light emitting chip and the operating time of the optical module corresponding to the current optical power. And pre-storing the threshold light power in the MCU, substituting the threshold light power into a light power attenuation formula, and calculating the service life of the light emitting chip. The operation life of the light emitting chip is the operation working time of the optical module corresponding to the threshold optical power.

Fig. 5 is a schematic diagram of a partial structure of an optical module according to some embodiments, in order to implement the above functions, the MCU is provided with a first memory for storing an initial optical power Pc and a threshold optical power Pd. And the data buffer is used for storing the optical power Pi and the operating time Ti of the optical module corresponding to the current optical power. And the data arithmetic unit reads the data of the first memory and the data buffer, calculates an optical power attenuation formula according to the read data, and calculates the service life of the optical module according to the optical power attenuation formula.

Specifically, the initial optical power is an actual optical power of the optical transmitter chip when the optical module leaves the factory, and is a preset value, which corresponds to the initial optical power of the optical transmitter chip. The threshold optical power is the lower limit value of the specification of the light emitting chip.

Specifically, the operation operating time of the optical module is the power-on operating time of the optical module, and the operation operating time is counted from the start of the operation of the optical module and is the actual operating time of the optical module. The MCU can be used for setting an internal clock and recording the running working time of the optical module in real time, or a register is set, the initial power-on time is stored, and the running working time is calculated according to the difference value between the current time and the initial power-on time.

In the embodiment of the application, in order to avoid the error caused by modifying the initial data by the misoperation of a user, the first memory is a read-only memory, and the modification of the data of the first memory by the user is avoided. In some embodiments of the present application, the MCU records the current optical power of the light emitting chip and the operating time of the optical module corresponding to the current optical power, and may record the current optical power once every other preset time period according to a preset time period; and recording can be performed once according to the attenuation degree of the optical power and the preset difference value of the optical power every time the optical power is attenuated.

In order to fit the accuracy of the optical power attenuation formula, the numerical values of 2 or more points are selected to perform fitting calculation on the optical power attenuation formula. In this embodiment, 3 points are selected as an example, and the optical power attenuation formula is calculated and solved. For convenience, the data of the three selected points are named as count values hereinafter, which are respectively referred to as a first count value, a second count value and a third count value. The following is true: the method comprises the following steps that a first optical power P1 and the operation working time T1 of an optical module corresponding to the first optical power P1 are obtained; the second optical power P2 and the operation working time T2 of the corresponding optical module; the third optical power P3 and the corresponding optical module operation time T3. The optical power is used as a longitudinal coordinate, the operation working time of the optical module is used as a horizontal coordinate, a first counting value (T1, P1), a second counting value (T2, P2) and a third counting value (T3, P3) of coordinate values of the three points are obtained, the first counting value, the second counting value and the third counting value are substituted into an unary quadratic equation P = aT ^2+ bT + c, and an optical power attenuation formula is obtained through fitting the equation. And then, the threshold optical power Pd is used as an ordinate to substitute for an optical power attenuation formula, so that the operation life of the optical module can be calculated.

In some embodiments of the present application, the operation time of the optical module corresponding to the three optical powers selected for calculation and the current optical power may be three adjacent points, or points that are not adjacent to each other.

Further, in order to provide more definite early warning information, the data arithmetic unit calculates the residual working time by using the operating life of the optical module and the current operating working time of the optical module. The remaining operating time is the optical module operating life-current optical module operating time.

And the data arithmetic unit writes the residual working time into the data buffer, and the upper computer reads the data at the corresponding position of the data buffer to obtain the residual working time early warning information.

In some embodiments of the present application, the first memory, the data buffer, and the data arithmetic unit are all disposed inside the MCU. According to actual needs, the first memory, the data buffer and the data arithmetic unit may also be partially or completely disposed outside the MCU, which is not limited in detail.

In the embodiment of the present application, the optical module is provided with a light detector for monitoring the optical power of the light emitting chip. The MCU is connected with the optical detector and used for storing the optical power detected by the optical detector. A first memory is arranged in the MCU and used for storing initial light power Pc and threshold light power Pd; the data buffer is used for storing the optical power and the optical module operation working time Ti corresponding to the current optical power; and the data arithmetic unit reads the data of the first memory and the data buffer, calculates an optical power attenuation formula according to the read data, and calculates the service life of the optical module according to the optical power attenuation formula. The optical module life cycle prediction algorithm is realized and is given to a host machine through the power-on operation time counting function and the optical power real-time reporting function of the optical module, so that a customer can evaluate and early warn, and the competitiveness of an optical module product is improved.

If the difference between the optical power values of the three points used for fitting the optical power attenuation formula is small, the accuracy of the fitted optical power attenuation formula is poor, and the uninterrupted operation process occupies more calculation force, which affects the operation speed of the optical module. In some embodiments of the present application, to make the optical power attenuation formula more accurate, the operating time of the optical module corresponding to 2 or more non-adjacent optical powers and the current optical power is selected.

In some embodiments of the present application, the first memory is provided with a first sub-memory area for storing the initial optical power Pc, and the first sub-memory area is a read-only memory area, so as to avoid a user modifying data of the first memory. And the upper computer reads the data of the first sub-storage area, but cannot modify the data of the first sub-storage area.

The first memory is further provided with a second sub-memory area for storing the threshold optical power Pd, and the second sub-memory area is a read-only memory area, so that a user is prevented from modifying data of the second memory. And the upper computer reads the data of the second sub-storage area, but cannot modify the data of the second sub-storage area. The threshold optical power is the lower limit value of the specification of the optical transmitting chip in the optical module. Such as: and if the optical power specification of a certain light emitting chip is minus 7.6dB to minus 1dB, the minus 7.6dB can be selected as the threshold optical power of the optical module, and the value is stored in a second sub storage area.

The data buffer is used for storing the optical power Pi in the optical module and the optical module operation working time Ti corresponding to the current optical power. The data buffer is a read-write buffer, and the MCU can read and write the data of the data buffer.

The first memory further sets a third sub-memory area for storing preset limit values, and the number and size of the preset limit values may be set differently according to calculation requirements, such as 3, 4, 5, 6 or more. In the embodiment of the present application, the preset limit values are 3, including: a first preset limit, a second preset limit, and a third preset limit. The predetermined limit may be a value of the optical power or a difference from the initial optical power.

For example, the difference from the initial optical power is used as the setting of the preset limit, the first preset limit is-1.5 dB, the second preset limit is-2 dB, and the third preset limit is-3 dB. And the data arithmetic unit reads the current optical power Pi of the data buffer, the operating time Ti of the optical module corresponding to the current optical power and the initial optical power Pc of the data of the first sub-storage area, calculates the current optical power difference, selects a count value according to the comparison with a preset limit, and calculates an optical power attenuation formula according to the count value. Wherein the current optical power difference is the current optical power Pi minus the initial optical power Pc.

The selection process of the count value is as follows: and selecting the optical power and the operation working time of the corresponding optical module as a first count value when the current optical power difference value is smaller than a first preset limit value for the first time and is larger than or equal to a second preset limit value.

And selecting the optical power and the operation working time of the corresponding optical module as a second count value when the current optical power difference value is smaller than a second preset limit value for the first time and is larger than or equal to a third preset limit value.

And when the current optical power difference value is smaller than a third preset limit value for the first time, selecting the optical power and the operation working time of the corresponding optical module as a third counting value.

In order to avoid data loss, a counting storage area is arranged in the optical module and used for accessing the first counting value, the second counting value and the third counting value.

The counting storage area is divided into a plurality of specific storage areas or storage sections and is used for storing a first counting value, a second counting value and a third counting value respectively.

Further, in the embodiment of the application, the upper computer reads data generated in the counting storage area of the optical module, and early warning of the optical power attenuation degree of the optical module can be realized. And if the upper computer reads the first counting value in the counting storage area, the optical power is displayed to be attenuated to the optical power corresponding to the first counting value, and the optical power attenuation state for the user body is warned.

The data arithmetic unit substitutes the unitary quadratic equation y = ax ^2+ bx + c according to the first count value, the second count value and the third count value, and the equation is solved to obtain an optical power attenuation formula; and then reading the threshold optical power Pd of the second sub storage area, substituting the threshold optical power Pd into an optical power attenuation formula, and calculating to obtain the service life of the optical module.

The optical module is also provided with a data register, the calculated operating life of the optical module is stored in the data register, and the upper computer reads data generated at the corresponding position of the data register to obtain data information of the operating life of the optical module.

In the embodiment of the application, the MCU calculates the operation life of the optical module after the optical module operates for a period of time. After a specific period of time is preset limit values for the optical power attenuation values of the optical module in operation, the selection of the count values and the fitting calculation of the optical power attenuation formula are carried out.

Further, in order to provide more definite early warning information, the data arithmetic unit calculates the residual working time by using the operating life of the optical module and the current operating working time of the optical module. The remaining working time is the optical module operation life-the current optical module operation working time. And the data arithmetic unit writes the residual working time into the data buffer, and the upper computer reads the data at the corresponding position of the data buffer to obtain the residual working time early warning information.

Further, in order to enable a user to know the optical power attenuation situation in time, the MCU is further configured to report the count value to the upper computer, and the user desktop displays the optical power attenuation value Pj and the corresponding optical module operation time Ti to remind the user of the operation situation of the optical module.

In the embodiment of the present application, the optical module is provided with a photodetector for monitoring the optical power of the light emitting chip. The MCU is connected with the optical detector and used for storing the optical power detected by the optical detector. A first memory is arranged in the MCU and used for storing initial light power Pc and threshold light power Pd; the data buffer is used for storing the optical power and the optical module operation working time Ti corresponding to the current optical power; and the data arithmetic unit reads the data of the first memory and the data buffer, calculates an optical power attenuation formula according to the read data, and calculates the service life of the optical module according to the optical power attenuation formula. The optical module life cycle prediction algorithm is realized through the power-on operation time counting function and the optical power real-time reporting function of the optical module, and the calculated data is read by the upper computer for the customer to evaluate and early warn, so that the competitiveness of the optical module product is improved.

Fig. 6 is a schematic diagram of an optical module operation life warning method according to some embodiments, which corresponds to the optical module device described above, and the present application provides an optical module operation life warning method, including:

and acquiring the current optical power of the optical module and the operation working time corresponding to the current optical power.

And calculating an optical power attenuation formula according to the current optical power and the operation working time corresponding to the current optical power.

According to the early warning method for the operation life of the optical module, the current optical power of the optical module and the operation working time corresponding to the current optical power are obtained. And calculating an optical power attenuation formula according to the current optical power and the operation working time corresponding to the current optical power. And calculating the service life of the optical module according to the optical power attenuation formula and the preset threshold optical power. The optical module life cycle prediction algorithm is realized through the power-on operation time counting function and the optical power real-time monitoring function of the optical module, and the calculated data is read by the upper computer for the customer to evaluate and early warn, so that the competitiveness of the optical module product is improved.

Further, calculating an optical power attenuation formula according to the current optical power and the operation working time corresponding to the current optical power, wherein the formula comprises the following steps: and calculating the difference value of the current optical power according to the current optical power and the preset initial optical power, and recording the difference value as Pj. And comparing the current optical power difference value with a preset limit value to select a count value, and calculating an optical power attenuation formula according to the count value.

Specifically, a first memory in the optical module is provided with a first sub-memory area for storing initial optical power Pc, and the first sub-memory area is a read-only memory area, so that a user is prevented from modifying data of the first memory. And the upper computer reads the data of the first sub-storage area, but cannot modify the data of the first sub-storage area.

The first memory is further provided with a third sub-memory area for storing a preset limit value. In the embodiment of the present application, the preset limit values are 3, including: a first preset limit, a second preset limit, and a third preset limit. And setting a difference value with the initial optical power as a preset limit value, wherein the first preset limit value is-1.5 dB, the second preset limit value is-2 dB, and the third preset limit value is-3 dB. And the data arithmetic unit reads the current optical power Pi of the data buffer, the operating time Ti of the optical module corresponding to the current optical power and the initial optical power Pc of the data of the first sub-storage area, calculates the current optical power difference, selects a count value according to the comparison with a preset limit, and calculates an optical power attenuation formula according to the count value. Wherein the current optical power difference is the current optical power Pi minus the initial optical power Pc.

And comparing the current optical power difference value with a preset limit value to select a count value, and calculating an optical power attenuation formula according to the count value.

And selecting the optical power and the operation working time of the corresponding optical module as a first count value when the current optical power difference value is smaller than a first preset limit value for the first time and is larger than or equal to a second preset limit value. And selecting the optical power and the operation working time of the corresponding optical module as a second count value when the current optical power difference value is smaller than a second preset limit value for the first time and is larger than or equal to a third preset limit value. And selecting the optical power and the operation working time of the corresponding optical module as a third counting value when the current optical power difference value is smaller than a third preset limit value for the first time.

Specifically, the data arithmetic unit traverses the data in the data buffer according to the time sequence, selects the optical power difference value of which the first current optical power difference value is smaller than the first preset limit value and is greater than or equal to the second preset limit value, namely-2 dB is smaller than Pj and is less than or equal to-1.5 dB, and takes the corresponding current optical power and the operating time of the corresponding optical module as the first count value. The first current optical power difference is smaller than the second preset limit value and larger than or equal to the optical power difference of the third preset limit value, namely-3 dB is smaller than Pj and smaller than or equal to-2 dB, and the corresponding current optical power and the operating time of the optical module corresponding to the current optical power are used as a second counting value. The first current optical power difference is smaller than a third preset limit value optical power difference, namely-3 dB is smaller than Pj, and the corresponding current optical power and the operation working time of the corresponding optical module serve as a third counting value.

Substituting the first count value, the second count value and the third count value into a unitary quadratic equation y = ax ^2+ bx + c, and solving the equation to obtain a light power attenuation formula; and then reading the threshold optical power Pd of the second sub storage area, substituting the threshold optical power Pd into an optical power attenuation formula, and calculating to obtain the service life of the optical module.

In the embodiment of the application, the first count value (T1, P1), the second count value (T2, P2), and the third count value (T3, P3) are substituted into the unitary quadratic equation P = aT ^2+ bT + c, and the equation is solved to obtain the optical power attenuation formula. In order to simplify the calculation process, the first count value is translated to the origin coordinate (0, 0), and then the new coordinates of the three points are (0, 0), (T2-T1, P2-P1), (T3-T1, P3-P1), the equation is solved to obtain a = (T3 = (P2-T2 = P3)/T2 = (T2-T3), b = (T2 ^2 p3-T3^2 × P2)/T2 = (T2-T3)), and c =0. Then, the preset threshold optical power is substituted into the optical power attenuation formula to calculate a value T, and then T + T1 is the total operation time of the optical module from factory power-on operation to optical power drop to the threshold optical power, that is, the operation life of the optical module in the present application.

And the data arithmetic unit calculates the residual working time by utilizing the running service life of the optical module and the current running working time of the optical module. The remaining working time is the optical module operation life-the current optical module operation working time. And the data arithmetic unit writes the residual working time into the data buffer, and the upper computer reads the data at the corresponding position of the data buffer to obtain the residual working time early warning information.

Since the above embodiments are all described by referring to and combining with other embodiments, the same portions are provided between different embodiments, and the same and similar portions between the various embodiments in this specification may be referred to each other. And will not be described in detail herein.

It is noted that, in this specification, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a circuit structure, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such circuit structure, article, or apparatus. Without further limitation, the statement "comprises a" \8230; "8230;" defines an element and does not exclude the presence of additional like elements in circuit structures, articles, or devices comprising the element.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present disclosure. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

The above-described embodiments of the present application do not limit the scope of the present application.

Claims

1. A light module, comprising: an upper housing;

the lower shell is covered with the upper shell to form a wrapping cavity;

the MCU is connected with the optical detector, arranged on the circuit board and used for calculating the optical power difference value between the optical power and the preset initial optical power after running for a period of time;

selecting a count value according to the comparison between the optical power difference value and a preset limit value comprises:

the preset limits include: sequentially reducing the first preset limit value, the second preset limit value and the third preset limit value;

traversing the optical power according to a time sequence, and selecting the optical power and the optical module operation working time corresponding to the optical power difference value which is smaller than the first preset limit value and larger than or equal to the second preset limit value as a first count value;

selecting optical power and optical module operation working time corresponding to the first optical power difference value which is smaller than the second preset limit value and larger than or equal to the third preset limit value as a second count value;

selecting the optical power and the optical module operation working time corresponding to the first optical power difference value smaller than the third preset limit value as a third counting value;

substituting the first count value, the second count value and the third count value into a preset optical power attenuation formula to solve to obtain an optical power attenuation formula; and calculating the service life of the optical module according to the optical power attenuation formula and a preset threshold optical power.

2. The light module of claim 1, wherein the MCU comprises: the data buffer is connected with the optical detector and used for buffering the optical power and the operation working time of the optical module corresponding to the optical power;

and the data arithmetic unit is connected with the data buffer, reads the data in the data buffer and calculates the service life of the optical module according to the data.

3. The light module of claim 2, wherein the MCU further comprises: a first memory for storing a threshold optical power of the light emitting chip;

and the data arithmetic unit calculates an optical power attenuation formula according to the optical power and the operation working time of the optical module corresponding to the optical power, and substitutes the threshold optical power into the optical power attenuation formula to obtain the operation service life of the optical module.

4. The light module according to claim 2, characterized in that the MCU comprises: a first sub-storage area for storing the initial optical power;

a second sub-storage area for storing the threshold optical power;

the data arithmetic unit is further used for selecting a counting value according to the initial optical power, the optical power and the optical module operation working time corresponding to the optical power, calculating an optical power attenuation formula according to the counting value, and calculating the optical module operation service life according to the threshold optical power.

5. The light module of claim 4, wherein the MCU further comprises:

the third sub-storage area is used for storing a preset limit value, and the data arithmetic unit selects the count value according to the comparison between the optical power and the preset limit value;

and a count storage area for storing the count value.

6. The optical module of claim 4, wherein the first sub-storage area is a read-only storage area.

7. An optical module operation life early warning method is characterized by comprising the following steps:

calculating the optical power difference value between the optical power and the preset initial optical power;

selecting a counting value according to the comparison of the optical power difference value and a preset limit value;

selecting the optical power and the optical module operation working time corresponding to the optical power difference value which is smaller than the second preset limit value and larger than or equal to the third preset limit value as a second count value;

substituting the count value into a preset optical power attenuation formula to solve to obtain the optical power attenuation formula;

8. The method for early warning of the operation life of the optical module according to claim 7, further comprising:

and calculating the residual working time of the optical module according to the operating life of the optical module and the current operating working time of the optical module.