CN113922870A - Optical module - Google Patents
Optical module Download PDFInfo
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- CN113922870A CN113922870A CN202111161173.8A CN202111161173A CN113922870A CN 113922870 A CN113922870 A CN 113922870A CN 202111161173 A CN202111161173 A CN 202111161173A CN 113922870 A CN113922870 A CN 113922870A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 191
- 238000012544 monitoring process Methods 0.000 claims abstract description 85
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- 230000006870 function Effects 0.000 description 10
- 230000010365 information processing Effects 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 9
- 230000008054 signal transmission Effects 0.000 description 7
- 230000002457 bidirectional effect Effects 0.000 description 6
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- 230000017525 heat dissipation Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000008358 core component Substances 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
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Abstract
The application provides an optical module, which comprises a circuit board, and a resistance unit, a voltage monitoring chip and an MCU which are arranged on the circuit board, wherein one end of the circuit board is provided with a power supply golden finger, and the resistance unit is connected with the power supply golden finger; the voltage monitoring chip is connected with one side of the resistance unit and used for acquiring a first voltage at one side of the resistance unit; the voltage monitoring chip is connected with the other side of the resistance unit and used for acquiring a second voltage on the other side of the resistance unit; the MCU is connected with the voltage monitoring chip and used for collecting the voltage difference output by the voltage monitoring chip, calculating according to the voltage difference to obtain a power consumption value, and storing the power consumption value in a preset storage mapping mark storage position so that an upper computer can read the power consumption value conveniently. According to the power consumption reporting method and device, the MCU is matched with the resistor unit and the voltage monitoring chip, the current consumption condition of the optical module is monitored through the resistor unit and the voltage monitoring chip, the power consumption real-time reporting function of the optical module is achieved, and the product competitiveness is improved.
Description
Technical Field
The application relates to the technical field of optical fiber communication, in particular to an 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 become increasingly important. In the optical communication technology, an optical module is a tool for realizing the interconversion of optical signals and is one of key devices 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.
Along with the construction of data centers of various large enterprises, optical modules serve as core components of the data centers to play a core role, thousands of optical modules are often needed in one data center, and the real-time power consumption monitoring of the optical modules is particularly important. In the current standards in the optical module industry, only the power supply voltage of the optical module is monitored, and the current consumption condition of the optical module cannot be known.
Disclosure of Invention
The embodiment of the application provides an optical module to solve the problem that the current consumption condition of the optical module cannot be monitored at present, so that the real-time reporting of the power consumption of the optical module cannot be realized.
In a first aspect, the present application provides an optical module, comprising:
the circuit board is provided with a power supply golden finger at one end, and the power supply golden finger receives external power supply;
the resistance unit is arranged on the circuit board and is electrically connected with the power supply golden finger;
the voltage monitoring chip is arranged on the circuit board, is connected with one side of the resistance unit and is used for acquiring a first voltage at one side of the resistance unit; the voltage acquisition circuit is connected with the other side of the resistance unit and is used for acquiring a second voltage on the other side of the resistance unit;
the MCU is arranged on the circuit board, is connected with the voltage monitoring chip and is used for collecting the voltage difference output by the voltage monitoring chip and calculating to obtain a power consumption value according to the voltage difference; and storing the power consumption value in a preset memory mapping mark storage position so that the upper computer can read the power consumption value.
In a second aspect, the present application provides a light module comprising:
the circuit board is provided with a power supply golden finger at one end, and the power supply golden finger receives external power supply;
the current monitoring chip is arranged on the circuit board, and the input end of the current monitoring chip is electrically connected with the power supply golden finger;
the MCU is arranged on the circuit board, is connected with the output end of the current monitoring chip and is used for acquiring a current value output by the current monitoring chip and calculating a power consumption value according to the current value; and storing the power consumption value in a preset memory mapping mark storage position so that the upper computer can read the power consumption value.
The optical module comprises a circuit board, and a resistance unit, a voltage monitoring chip and an MCU which are arranged on the circuit board, wherein one end of the circuit board is provided with a power supply golden finger which is used for receiving external power supply; the resistance unit is electrically connected with the power supply golden finger and supplies power to the resistance unit through the power supply golden finger; the voltage monitoring chip is connected with one side of the resistance unit and used for acquiring a first voltage at one side of the resistance unit; the voltage monitoring chip is connected with the other side of the resistance unit and used for acquiring a second voltage on the other side of the resistance unit; the MCU is connected with the voltage monitoring chip and used for collecting the voltage difference output by the voltage monitoring chip, calculating according to the voltage difference to obtain a power consumption value, and storing the power consumption value in a preset storage mapping mark storage position so that an upper computer can read the power consumption value conveniently. MCU in this application collocation resistance unit, the voltage monitoring chip, through the voltage difference of voltage monitoring chip output resistance unit both sides, MCU calculates according to voltage difference and resistance of resistance unit and obtains operating current I, power consumption value P of optical module is obtained through operating current I and MCU's operating voltage, and with this power consumption value storage in predetermined memory map mark memory location, so that the host computer reads the power consumption value, so can realize that the optical module power consumption reports the function in real time, thereby provide the power consumption data of customer's optical module in service, improve product competitiveness.
Drawings
FIG. 1 is a diagram of an optical communication system connection according to some embodiments;
figure 2 is a block diagram of an optical network terminal according to some embodiments;
FIG. 3 is a patterning of a light module provided according to some embodiments;
FIG. 4 is an exploded block diagram of a light module according to some embodiments;
fig. 5 is a first schematic structural diagram of a circuit board in an optical module provided in the embodiment of the present application;
fig. 6 is a block diagram illustrating real-time reporting of power consumption in an optical module according to an embodiment of the present application;
fig. 7a is a schematic circuit diagram of an optical module according to an embodiment of the present disclosure;
fig. 7b is a schematic circuit diagram of a circuit board in an optical module according to an embodiment of the present disclosure;
fig. 8 is a second schematic structural diagram of a circuit board in an optical module provided in the embodiment of the present application;
fig. 9 is a schematic diagram of storage locations of working current data and power consumption data in an optical module according to an embodiment of the present application.
Detailed Description
To facilitate the description of the claimed embodiments, some concepts related to the present application will be described below.
In order to make those skilled in the art better understand the technical solutions in the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
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 that the transmission of the information is completed. 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 diagram of optical communication system connections 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 several kilometers (6 kilometers to 8 kilometers), 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 the optical fiber 101 and the 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 configured to connect with the optical fiber 101, and an electrical port, 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 structure diagram of an optical network terminal according to some embodiments, and fig. 2 only shows the structure of the optical module 200 of the optical network terminal 100 in order to clearly show the 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 diagram of an optical module provided according to some embodiments, and fig. 4 is an exploded structural view of an optical 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;
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, the lower housing 202 includes a bottom plate and two lower side plates disposed at both sides of the bottom plate and 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 to cover the upper housing 201 on 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 (right end in fig. 3) of the optical module 200, and the opening 205 is also located at an end (left 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 assembly mode, so that devices such as the circuit board 300 and the optical transceiver 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 a housing thereof, and the unlocking component 203 is configured to realize 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 members 203 are located on the outer walls of the two lower side plates of the lower housing 202, and include snap-fit members that mate 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 (such as capacitors, resistors, triodes, and MOS transistors), and chips (such as MCU, laser driver chip, amplitude limiting amplifier chip, clock data recovery CDR, power management chip, and data processing chip DSP).
The circuit board 300 connects the above devices in the optical module 200 together according to circuit design through circuit routing to implement functions of power supply, electrical signal transmission, grounding, and the like.
The circuit board 300 is generally a rigid circuit board, which can also perform a bearing function due to its relatively rigid material, for example, the rigid circuit board can stably bear a chip; the hard circuit board can also be inserted into an electric connector in the cage of the upper computer, and in some embodiments disclosed in the application, a metal pin/golden finger is formed on the surface of the tail end of one side of the hard circuit board and is used for being connected with the electric connector; these are not easily implemented with flexible circuit boards.
Flexible circuit boards are also used in some optical modules; the flexible circuit board is generally used in combination with the rigid circuit board, and for example, the rigid circuit board may be connected to the optical transceiver device to supplement the rigid circuit board.
The optical transceiver includes an tosa 400 and an rosa 500, and the tosa 400 and the rosa 500 are generally electrically connected to the circuit board 300 for respectively transmitting and receiving optical signals. In some embodiments, the tosa 400 and the rosa 500 may be combined together to form an integrated optical transceiver structure.
The MCU on the circuit board 300 can monitor the operating voltage and the voltage values of other chips, but cannot intuitively know the current consumption of the optical module, so that the power consumption of the optical module cannot be reported in real time, and thus, a client cannot intuitively obtain power consumption data of the optical module during operation.
In order to solve the above problems, according to the present application, the MCU is matched with the circuit design of the resistor unit and the voltage monitoring chip, and the resistor unit and the voltage monitoring chip can monitor the current consumption of the optical module, so as to realize the function of reporting the power consumption of the optical module in real time.
Fig. 5 is a first schematic structural diagram of a circuit board in an optical module according to an embodiment of the present disclosure, and fig. 6 is a block diagram of reporting power consumption in the optical module according to the embodiment of the present disclosure in real time. As shown in fig. 5 and 6, the optical module provided in the embodiment of the present application may include a resistor unit 700, a voltage monitoring chip 800, and an MCU600, where the resistor unit 700, the voltage monitoring chip 800, and the MCU600 are all disposed on a circuit board 300, one end of the circuit board 300 is provided with a power gold finger 310, and the power gold finger 310 is connected with an upper computer to supply power to the circuit board 300 through the upper computer; the resistance unit 700 is disposed on the power input trunk of the optical module, the resistance unit 700 is connected in series with the power gold finger 310, and the upper computer supplies power to the resistance unit 700 through the power gold finger 310 and outputs a current signal.
An input end of the voltage monitoring chip 800 is connected to one side of the resistance unit 700, and is configured to collect a first voltage at one side of the resistance unit 700; the other input terminal of the voltage monitoring chip 800 is connected to the other side of the resistor unit 700, and is configured to collect a second voltage at the other side of the resistor unit 700. Specifically, a first voltage sampling pin and a second voltage sampling pin are arranged on the voltage monitoring chip 800, and one side of the resistance unit 700 is electrically connected to the first voltage sampling pin, so that the voltage on one side of the resistance unit 700 is input into the first voltage sampling pin of the voltage monitoring chip 800; the other side of the resistance unit 700 is connected to a second voltage sampling pin to input the voltage of the resistance unit 700 into the second voltage sampling pin of the voltage monitoring chip 800.
In some embodiments, the right side of the resistor unit 700 is connected into the first voltage sampling pin of the voltage monitoring chip 800, so as to input the voltage U0 on the right side of the resistor unit 700 into the voltage monitoring chip 800. The left side of the resistor unit 700 is connected to the second voltage sampling pin of the voltage monitoring chip 800, so that the voltage U1 on the left side of the resistor unit 700 is input to the voltage monitoring chip 800.
The right side of the resistor unit 700 is connected to the power gold finger on the circuit board 300, so the right side of the resistor unit 700 is the positive terminal and the left side of the resistor unit 700 is the negative terminal. Thus, the voltage on the right side of the resistor unit 700 is greater than the voltage on the left side of the resistor unit 700, i.e., the first voltage U0 is greater than the second voltage U1.
The voltage monitoring chip 800 collects voltages on the left side and the right side of the resistor unit 700 through the first voltage collecting pin and the second voltage collecting pin, and calculates a voltage difference Δ U between the two sides of the resistor unit 700 according to the first voltage U0 and the second voltage U1, that is, Δ U is U0-U1 is I R, and R is a resistance value of the resistor unit 700.
In some embodiments, the resistor unit 700 may include a resistor electrically connected to the power gold finger 310, and the positive terminal of the resistor is connected to one input terminal of the voltage monitoring chip 800, and the negative terminal of the resistor is connected to another input terminal of the voltage monitoring chip 800, so that the voltage monitoring chip 800 obtains a voltage difference between two terminals of the resistor; the resistor unit 700 may also include a plurality of resistors, which may be combined in series or in parallel, and the voltage difference between the two sides of the resistor unit 700 is obtained through the voltage monitoring chip 800.
In some embodiments, the resistor unit 700 connected in series to the power input trunk needs to have high precision and small resistance to reduce the voltage difference Δ U between two sides of the resistor unit 700.
In some embodiments, the voltage difference Δ U across the resistor unit 700 is less than or equal to 0.05V, and the resistance of the resistor unit 700 may be 50m Ω because Δ U ═ I × R.
Fig. 7a is a schematic diagram of a circuit principle in an optical module according to an embodiment of the present application. As shown in fig. 7a, a soft-start MOS transistor and a resistor R917 are disposed on the power input trunk, and the soft-start MOS transistor and the resistor R917 are connected in series. The circuit board 300 is further provided with a voltage monitoring chip 800, the voltage monitoring chip 800 is provided with a first voltage sampling pin a1 and a second voltage sampling pin a2, the first voltage sampling pin a1 is a positive input pin of the voltage monitoring chip 800, and the second voltage sampling pin a2 is a negative input pin of the voltage monitoring chip 800.
The first voltage sampling pin a1 is connected to one side of the resistor R917 to transmit the first voltage U0 on the side of the resistor R917 to the voltage monitoring chip 800; the second voltage sampling pin a2 is connected to the other side of the resistor R917 to transmit the second voltage U1 on the other side of the resistor R917 to the voltage monitoring chip 800. The voltage monitoring chip 800 calculates a voltage difference Δ U between two sides of the resistor R917 according to the first voltage U0 and the second voltage U1, and the voltage difference Δ U is transmitted to the MCU600 through the output terminal B2 of the voltage monitoring chip 800. The output terminal B1 of the voltage monitor chip 800 is grounded.
The MCU600 is connected to the output terminal of the voltage monitoring chip 800 to transmit the voltage difference Δ U output by the voltage monitoring chip 800 to the MCU 600. That is, the voltage difference Δ U output by the voltage monitoring chip 800 is input to the MCU600, and the MCU600 calculates a current I according to the collected voltage difference Δ U and the known resistance R of the resistor unit 700, where the current I is the total operating current I of the optical module.
Fig. 7b is a schematic circuit diagram of a circuit board in an optical module according to an embodiment of the present disclosure. As shown in fig. 7b, the MCU600 is provided with a pin J4, the voltage monitoring chip 800 transmits the output voltage difference Δ U to the MCU600 through the pin J4, and the MCU600 monitors the voltage difference Δ U. The MCU600 is also provided with a voltage acquisition pin, the voltage provided by the power supply is transmitted to the MCU600 through the voltage acquisition pin, and the MCU600 monitors to obtain the working voltage U.
The power consumption P of the optical module is the working voltage U × the total working current I, so that the working voltage U of the optical module needs to be obtained, the specific value of the working voltage U can be obtained by monitoring through the MCU600, the MCU600 can synchronously monitor the voltage value while the host power supplies power to the MCU600, and the total power consumption P of the optical module can be obtained through calculation, that is, the MCU600 can calculate the total power consumption P in the unit of W according to the monitored working voltage U, the voltage difference Δ U output by the collected voltage monitoring chip 800, and the resistance value of the resistance unit 700.
In some embodiments, the power supply voltage of the optical network terminal 100 via the power supply golden finger 310 of the circuit board 300 is 3.3V, that is, the host power supplies 3.3V to the MCU600, in practical cases, some loss may occur in the power supply voltage of the MCU, so that the operating voltage U of the MCU600 is less than or equal to 3.3V.
In order to solve the above problems, the present application can also directly monitor the current consumption condition of the optical module through the current monitoring chip by matching the MCU with the circuit design of the current monitoring chip, thereby realizing the function of reporting the power consumption of the optical module in real time.
Fig. 8 is a second schematic structural diagram of a circuit board in an optical module according to an embodiment of the present application. As shown in fig. 8, the optical module provided in the embodiment of the present application may further include a current monitoring chip 900, where the current monitoring chip 900 is disposed on the circuit board 300, one end of the circuit board 300 is provided with a power gold finger 310, and the power gold finger 310 is connected to an upper computer to supply power to the circuit board 300 through the upper computer; the current monitoring chip 900 is disposed on the power input trunk of the optical module, and the input end of the current monitoring chip is electrically connected to the power gold finger 310, so as to monitor the current value through the voltage input by the power gold finger.
The output terminal of the current monitoring chip 900 is connected to the MCU600 to transmit the current value output from the current monitoring chip 900 to the MCU 600. The power consumption P of the optical module is the working voltage U × the total working current I, so that the working voltage U of the optical module needs to be obtained, and the specific value of the working voltage U can be obtained by monitoring through the MCU600, and the MCU600 can synchronously monitor the voltage value while the host power supplies power to the MCU600, so that the total power consumption P of the optical module can be obtained through calculation, that is, the MCU600 calculates the total power consumption P according to the monitored working voltage U and the collected current value I output by the current monitoring chip 900.
Fig. 9 is a schematic diagram of storage locations of working current data and power consumption data in an optical module according to an embodiment of the present application. As shown in fig. 9, the MCU600 is generally integrated with a memory and has a storage function, that is, the memory is integrated with an operation chip to form the MCU600, such that the operation chip is used for calculating data, and the calculated data can be stored in a predetermined storage area of the memory.
The memory integrated in the MCU600 is used to store the calculated power consumption value in a predetermined memory mapped flag storage location, and the upper computer can read the power consumption value from the memory. Thus, the MCU600 may calculate the total power consumption P according to the monitored operating voltage U, the collected voltage difference Δ U output by the voltage monitoring chip 800, and the resistance value of the resistance unit 700, or calculate the total power consumption P according to the monitored operating voltage U and the collected current value I output by the current monitoring chip 900, and then store the total power consumption P in a predetermined memory mapping mark storage location in the memory. The P is refreshed synchronously with the software cycle (50ms) refresh in the optical module working process, that is, the MCU600 periodically monitors the working voltage U at a preset cycle, and periodically collects the voltage difference Δ U output by the voltage monitoring chip 800 and the resistance value of the resistor unit 700 to refresh the power consumption value, thereby realizing the function of reporting the power consumption of the optical module in real time.
The circuit board 300 may further include functional chips 910 and 920, and the power gold 310 is electrically connected to the functional chips 910 and 920, so that the optical network terminal 100 supplies power to the functional chips 910 and 920 through the power gold 310. The MCU600 on the circuit board 300 is electrically connected to the functional chips 910 and 920 to realize signal transmission between the MCU600 and the functional chips 910 and 920, thereby realizing the optical module functions corresponding to the functional chips 910 and 920.
The optical module provided by the application can comprise a circuit board, and a resistance unit, a voltage monitoring chip and an MCU which are arranged on the circuit board, wherein one end of the circuit board is provided with a power supply golden finger which receives external power supply; the resistance unit is electrically connected with the power supply golden finger in series and supplies power to the resistance unit through the power supply golden finger; the voltage monitoring chip is connected with one side of the resistance unit and used for acquiring a first voltage at one side of the resistance unit; the voltage monitoring chip is connected with the other side of the resistance unit and used for acquiring a second voltage on the other side of the resistance unit; the MCU is connected with the voltage monitoring chip and used for collecting the voltage difference output by the voltage monitoring chip, monitoring the working voltage of the MCU and calculating the power consumption value according to the working voltage, the voltage difference and the resistance value of the resistance unit; and storing the power consumption value calculated by the MCU to a preset memory mapping mark storage position in the memory, and reading the power consumption value from the memory by the upper computer. In the application, the MCU is matched with the resistor unit and the voltage monitoring chip, the voltage difference of two sides of the resistor unit is output through the voltage monitoring chip, the MCU calculates to obtain working current I according to the voltage difference and the resistance value of the resistor unit, and calculates to obtain the power consumption P of the optical module through the working current I and the working voltage of the MCU; the MCU can synchronously refresh the power consumption P along with the periodical refreshing of software in the working process of the optical module, so that the function of reporting the power consumption of the optical module in real time is realized, power consumption data in the operation of the optical module is provided for customers, and the product competitiveness is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A light module, comprising:
the circuit board is provided with a power supply golden finger at one end, and the power supply golden finger receives external power supply;
the resistance unit is arranged on the circuit board and is electrically connected with the power supply golden finger;
the voltage monitoring chip is arranged on the circuit board, is connected with one side of the resistance unit and is used for acquiring a first voltage at one side of the resistance unit; the voltage acquisition circuit is connected with the other side of the resistance unit and is used for acquiring a second voltage on the other side of the resistance unit;
the MCU is arranged on the circuit board, is connected with the voltage monitoring chip and is used for collecting the voltage difference output by the voltage monitoring chip and calculating to obtain a power consumption value according to the voltage difference; and storing the power consumption value in a preset memory mapping mark storage position so that the upper computer can read the power consumption value.
2. The optical module according to claim 1, wherein a first voltage sampling pin and a second voltage sampling pin are disposed on the voltage monitoring chip, one side of the resistor unit is electrically connected to the first voltage sampling pin, and the other side of the resistor unit is electrically connected to the second voltage sampling pin.
3. The optical module of claim 2, wherein the first voltage sampling pin is a positive input pin and the second voltage sampling pin is a negative input pin.
4. The light module of claim 3, wherein the first voltage is greater than the second voltage.
5. The optical module of claim 4, wherein the voltage difference is a difference between the first voltage and the second voltage.
6. The optical module of claim 5, wherein the voltage difference output by the voltage monitoring chip is less than or equal to 0.05V.
7. The optical module according to claim 1, wherein the resistance value of the resistance unit is 50m Ω.
8. The light module of claim 1, wherein the operating voltage of the MCU is less than or equal to 3.3V.
9. The optical module according to claim 1, wherein the MCU is further configured to periodically monitor an operating voltage thereof in a preset period, periodically collect a voltage difference output by the voltage monitoring chip, and refresh a power consumption value according to the operating voltage and the voltage difference.
10. A light module, comprising:
the circuit board is provided with a power supply golden finger at one end, and the power supply golden finger receives external power supply;
the current monitoring chip is arranged on the circuit board, and the input end of the current monitoring chip is electrically connected with the power supply golden finger;
the MCU is arranged on the circuit board, is connected with the output end of the current monitoring chip and is used for acquiring a current value output by the current monitoring chip and calculating a power consumption value according to the current value; and storing the power consumption value in a preset memory mapping mark storage position so that the upper computer can read the power consumption value.
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| CN202111161173.8A CN113922870A (en) | 2021-09-30 | 2021-09-30 | Optical module |
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| CN202111161173.8A CN113922870A (en) | 2021-09-30 | 2021-09-30 | Optical module |
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| CN115268329A (en) * | 2022-07-29 | 2022-11-01 | 青岛海信宽带多媒体技术有限公司 | Optical module and power supply voltage monitoring and compensating method thereof |
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