Energy converter excitation power supply cofferdam circuit

Abstract

The invention provides a cofferdam circuit for an excitation power supply of a transducer. The circuit comprises a power supply enabling circuit used for receiving a power supply enabling signal and transmitting power supply electric energy output by a power supply to a power supply circuit based on the power supply enabling signal; the power supply circuit is connected with the power supply enabling circuit and is used for converting the power supply electric energy into target electric energy and transmitting the target electric energy to a power supply cofferdam circuit; and the power supply cofferdam circuit is connected with the power supply circuit and is used for storing the target electric energy or outputting the target electric energy as an excitation power supply. According to the method, the accuracy of the output voltage of the excitation power supply is improved, and the operation and maintenance cost of the cofferdam circuit of the excitation power supply is reduced.

Description

Technical Field

[0001] This application relates to the field of metrology technology, and in particular, to a transducer excitation power supply cofferdam circuit. Background Art

[0002] Flowmeter products generally have types of products powered by mains electricity and products powered by batteries. Moreover, flowmeter products are generally installed in remote areas with special locations, far from maintenance personnel, and inconvenient for maintenance and management, resulting in inconvenient construction, high construction costs, and safety problems such as aging of circuits. However, battery-powered flowmeter products can overcome the above problems. However, restricted by the battery capacity and the instantaneous discharge capacity of the battery, battery-powered flowmeter products need to meet requirements such as low power consumption and low current peaks.

[0003] In the prior art, the transducer excitation power supply is generated by boosting with an isolation transformer or by boosting with a BOOST power supply; these power supplies generally have relatively high power consumption, especially in the case of frequent switching, and the energy required for the power supply to establish operation has reached or even exceeded the power consumption for the circuit to achieve related functions during its operation.

[0004] In view of the above problems, no effective solution has been proposed yet. Summary of the Invention

[0005] This application provides a transducer excitation power supply cofferdam circuit to solve the technical problems of unstable voltage provided by the excitation power supply and relatively high device power consumption in the prior art.

[0006] In a first aspect, this application provides a transducer excitation power supply cofferdam circuit, including:

[0007] A power enable circuit, configured to receive a power enable signal and transmit the power electrical energy output by the power supply to the power circuit based on the power enable signal;

[0008] The power circuit, connected to the power enable circuit, is configured to convert the power electrical energy into target electrical energy and transmit the target electrical energy to the power supply cofferdam circuit;

[0009] The power supply cofferdam circuit, connected to the power circuit, is configured to store the target electrical energy or output the target electrical energy as an excitation power supply.

[0010] In a possible design, the power enable circuit is connected to the power circuit through a first electronic switch, the power circuit is connected to the power supply cofferdam circuit through a third electronic switch, the power supply cofferdam circuit stores the target electrical energy through an energy storage element, and the energy storage element is controlled through the third electronic switch and a fourth electronic switch, where the third electronic switch and the fourth electronic switch are connected back-to-back.

[0011] In a possible design, the power enable circuit includes: a power supply receiving device, a power enable signal receiving device, a grounding device, a first resistor, a second resistor, a third resistor, a first capacitor, a first electronic switch, and a second electronic switch, where the first resistor is a current-limiting resistor.

[0012] In a possible design, the power supply receiving device is connected in series with the first electronic switch, the second resistor is connected in parallel with the first electronic switch, the first electronic switch and the second electronic switch are connected in series, the first resistor is connected in series with the second electronic switch, the power supply receiving device is connected to the grounding device through the first capacitor, and the power enable signal receiving device is connected to the grounding device through the third resistor.

[0013] In a possible design, the power enable circuit is specifically configured to:

[0014] When the power enable signal is a low-level off signal, the first electronic switch and the second electronic switch are turned off. When the first electronic switch and the second electronic switch are turned off, the power enable circuit stops transmitting the power electrical energy to the power circuit;

[0015] When the power enable signal is a high-level on signal, the first electronic switch and the second electronic switch are turned on. When the first electronic switch and the second electronic switch are turned on, the power enable circuit transmits the power electrical energy to the power circuit.

[0016] In a possible design, the power circuit includes: an input power supply receiving device, an output power supply transmitting device, a power chip, a grounding device, a second capacitor, a third capacitor, a fourth capacitor, a fourth resistor, a fifth resistor, a sixth resistor, a diode, and an inductor, where the second capacitor, the third capacitor, and the fourth capacitor are filter capacitors, the fourth resistor is an enable resistor, and the fifth resistor and the sixth resistor are voltage-dividing resistors.

[0017] In a possible design, the output power supply transmitting device and the diode are connected in series to the first interface of the power supply chip. The output power supply transmitting device is connected to the grounding device through the fourth capacitor. The second interface of the power supply chip is connected to the grounding device. The fifth resistor is connected to the third interface of the power supply chip and is connected in parallel with the output power supply transmitting device. The third interface of the power supply chip is connected to the grounding device through the sixth resistor. The fourth interface of the power supply chip is connected to the input power supply receiving device through the fourth resistor. The fifth interface of the power supply chip is connected to the grounding device through the third capacitor. The sixth interface of the power supply chip is connected to the input power supply receiving device and is connected in parallel with the fourth resistor. The input power supply receiving device is connected to the grounding device through the second capacitor. The inductor is connected in parallel with the power supply chip.

[0018] In a possible design, the power supply circuit is specifically configured to:

[0019] When the power supply enabling circuit transmits the power supply electrical energy to the power supply circuit, the power supply chip generates the target electrical energy based on the power supply electrical energy, wherein the target electrical energy is transmitted to the power supply cofferdam circuit through the output power supply transmitting device.

[0020] In a possible design, the power supply cofferdam circuit includes: an output power supply receiving device, a power supply enabling signal receiving device, an energy storage element, a grounding device, a third electronic switch, a fourth electronic switch, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, and an eleventh resistor, wherein the seventh resistor, the eighth resistor, the ninth resistor, the tenth resistor, and the eleventh resistor are voltage dividing resistors.

[0021] In a possible design, the third electronic switch and the fourth electronic switch are connected back-to-back through the seventh resistor, the eighth resistor, the ninth resistor, and the tenth resistor. The third electronic switch and the fourth electronic switch are connected to the energy storage element. The energy storage element is connected to the grounding device. The fifth electronic switch and the fourth electronic switch are connected in series. The power supply enabling signal receiving device is connected to the fifth electronic switch through the eleventh resistor. The fifth electronic switch is connected to the grounding device.

[0022] In a possible design, the power supply cofferdam circuit is specifically configured to:

[0023] When the power supply enabling signal is a low-level shutdown signal, the fifth electronic switch, the third electronic switch, and the fourth electronic switch are turned off. Wherein, when the third electronic switch and the fourth electronic switch are turned off, the energy storage element stops outputting the target electrical energy as an excitation power supply.

[0024] In a possible design, the power supply cofferdam circuit is further specifically configured to:

[0025] When the power enable signal is a high-level on signal, the fifth electronic switch, the third electronic switch, and the fourth electronic switch are turned on. Among them, when the third electronic switch and the fourth electronic switch are turned on, the energy storage element outputs the stored target electric energy as the excitation power supply. The output power supply receiving device receives the target electric energy generated by the power supply electric energy and outputs the target electric energy as the excitation power supply, or stores the target electric energy in the energy storage element.

[0026] The transducer excitation power supply cofferdam circuit provided by this application includes a power enable circuit for receiving a power enable signal and transmitting the power supply electric energy output by the power supply to the power circuit based on the power enable signal; the power circuit is connected to the power enable circuit and is configured to convert the power supply electric energy into target electric energy and transmit the target electric energy to the power supply cofferdam circuit; the power supply cofferdam circuit is connected to the power circuit and is configured to store the target electric energy or output the target electric energy as an excitation power supply. By these technical means, the technical effects of accurately controlling the instantaneous discharge voltage value, reducing the average power consumption of the circuit, and improving the circuit stability are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application.

[0028] Figure 1 It is a schematic structural diagram of a transducer excitation power supply cofferdam circuit provided by this application;

[0029] Figure 2 It is a schematic wiring diagram of a transducer excitation power supply cofferdam circuit provided by this application.

[0030] Through the above-mentioned drawings, the clear embodiments of this application have been shown, and there will be more detailed descriptions later. These drawings and text descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. On the contrary, they are only examples of devices and methods consistent with some aspects of this application as detailed in the appended claims.

[0032] In the prior art, battery-powered technology is adopted for flowmeter products to overcome problems such as aging of circuits and inconvenience in maintenance and management. The transducer excitation power supply provided by the battery is generally generated by boosting with an isolation transformer or by boosting with a BOOST power supply; and the power consumption of these power supplies is generally relatively high. Especially in the case of frequent switching, the energy required for the power supply to establish operation has reached or even exceeded the power consumption for the circuit to implement relevant functions during the power supply operation, and it cannot meet the requirements of low power consumption and low current peak value, seriously affecting the service life of the device.

[0033] The specific application scenario of this application is the usage scenario where the flowmeter product is powered by the battery of the transducer excitation power supply cofferdam circuit.

[0034] The transducer excitation power supply cofferdam circuit provided by this application aims to solve the above technical problems in the prior art.

[0035] The technical solution of this application and how the technical solution of this application solves the above technical problems will be described in detail below with specific embodiments. These several specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of this application will be described below in conjunction with the drawings.

[0036] Figure 1 It is a schematic structural diagram of a transducer excitation power supply cofferdam circuit provided by this application. As Figure 1 shown, the transducer excitation power supply cofferdam circuit may include: a power enable circuit 10, a power circuit 20, and a power cofferdam circuit 30.

[0037] In this embodiment, in order to improve the service life of battery-powered flowmeters, reduce the overall power consumption of battery-powered flowmeter products, reduce the transient current peak value of battery-powered flowmeter products, and stabilize the transducer drive signal of battery-powered flowmeter products, a transducer excitation power supply cofferdam circuit is provided. The above transducer excitation power supply cofferdam circuit mainly includes: a power circuit 10, a power enable circuit 20, and a power cofferdam circuit 30.

[0038] Specifically, the power enable circuit is used to receive a power enable signal and transmit the power energy output by the power supply to the power circuit based on the power enable signal; the above power circuit is connected to the above power enable circuit and is used to convert the above power energy into target power energy and transmit the above target power energy to the power cofferdam circuit; the above power cofferdam circuit is connected to the above power circuit and is used to store the above target power energy or output the above target power energy as an excitation power supply.

[0039] In this embodiment, the above-mentioned power enable circuit is connected to the above-mentioned power supply circuit through a first electronic switch. The above-mentioned power supply circuit is connected to the above-mentioned power supply cofferdam circuit through a third electronic switch. The above-mentioned power supply cofferdam circuit stores the above-mentioned target electric energy through an energy storage element. The above-mentioned energy storage element is controlled through the above-mentioned third electronic switch and a fourth electronic switch. Among them, the above-mentioned third electronic switch and the above-mentioned fourth electronic switch are connected back to back.

[0040] Specifically, as Figure 2 shown in the wiring schematic diagram of the transducer excitation power supply cofferdam circuit, the above-mentioned power enable circuit, the above-mentioned power supply circuit and the above-mentioned power supply cofferdam circuit are designed in series. The conduction or cut-off between the above-mentioned power enable circuit and the above-mentioned power supply circuit is controlled by a first electronic switch Q1. The conduction or cut-off between the above-mentioned power supply circuit and the above-mentioned power supply cofferdam circuit is controlled by a third electronic switch Q2. The above-mentioned power supply cofferdam circuit stores the above-mentioned target electric energy through an energy storage element. The above-mentioned energy storage element is controlled through the above-mentioned third electronic switch and the fourth electronic switch connected back to back. By storing energy through the energy storage element, the requirement for the instantaneous discharge capacity of the power supply is reduced.

[0041] Optionally, both the above-mentioned power enable circuit 10 and the above-mentioned power supply cofferdam circuit 30 have an enable signal receiving device for receiving a power enable signal MUX-Enable. When the above-mentioned power enable signal MUX-Enable is turned on at a high level, all electronic switches (the first electronic switch Q1, the second electronic switch Q2, the third electronic switch Q3, and the fourth electronic switch Q4) are turned on, and the transducer excitation power supply cofferdam circuit starts to work and outputs an excitation voltage.

[0042] It should be noted that the above-mentioned power enable circuit and the above-mentioned power supply cofferdam circuit can receive the above-mentioned power enable signal MUX-Enable simultaneously, or the above-mentioned power enable signal MUX-Enable can also separately control the power enable circuit and the power supply cofferdam circuit, which is beneficial to the fine control of the product.

[0043] Optionally, in the above-mentioned transducer excitation power supply cofferdam circuit, the power supply circuit can be generated by a boost or buck or linear voltage regulator circuit. The analog switch of the power supply cofferdam circuit can use other electronic switches such as triodes. A relatively large capacitor can be selected as the energy storage capacitor of the power supply cofferdam circuit.

[0044] In this embodiment, the above-mentioned power enable circuit 10 includes: a power supply receiving device, a power enable signal receiving device, a grounding device, a first resistor, a second resistor, a third resistor, a first capacitor, a first electronic switch, and a second electronic switch.

[0045] It should be noted that the above-mentioned first resistor is a current-limiting resistor, and the above-mentioned first electronic switch and the above-mentioned second electronic switch are connected in series in a closed state.

[0046] Specifically, the above power enable circuit includes: a power supply VCC receiving device, a power enable signal MUX-Enable receiving device, a reference ground GND (grounding device), a current-limiting resistor R9 (first resistor), a capacitor C2 (first capacitor), a pull-up resistor R1 (second resistor), an electronic switch Q1 (first electronic switch), an electronic switch Q4 (second electronic switch), and a pull-down resistor R10 (third resistor).

[0047] Specifically, the connection relationship is as Figure 2 shown. The above power supply receiving device is connected in series with the above first electronic switch. The above second resistor is connected in parallel with the above first electronic switch. The above first electronic switch and the above second electronic switch are connected in series. The above first resistor is connected in series with the above second electronic switch. The above power supply receiving device is connected to the above grounding device through the above first capacitor. The above power enable signal receiving device is connected to the above grounding device through the above third resistor.

[0048] Optionally, the above power enable circuit can also achieve the same on and off effects of the circuit by directly controlling the enable terminal of the power circuit chip, which can reduce the cost of using components.

[0049] In this embodiment, the above power enable circuit 10 is specifically configured to: when the above power enable signal is a low-level off signal, the above first electronic switch and the above second electronic switch are turned off.

[0050] It should be noted that when the first electronic switch and the above second electronic switch are turned off, the above power enable circuit stops transmitting the above power electrical energy to the above power circuit.

[0051] Specifically, when the power enable signal MUX-Enable is at a low level and off, the electronic switch Q4 is in the off state, so that the electronic switch Q1 is also in the off state, and there is no input to VCC1. The above power enable circuit stops transmitting the above power electrical energy to the above power circuit, and the chip U1 in the power circuit is in a stopped working state.

[0052] In this embodiment, the above power enable circuit 10 is further specifically configured to: when the above power enable signal is a high-level on signal, the above first electronic switch and the above second electronic switch are turned on. Among them, when the first electronic switch and the above second electronic switch are turned on, the above power enable circuit transmits the above power electrical energy to the above power circuit.

[0053] Specifically, when the power enable signal MUX-Enable is turned on at a high level, the power enable circuit starts to work. The electronic switch Q4 is turned on when MUX-Enable is at a high level, which then drives the electronic switch Q1 to turn on. The above-mentioned power enable circuit transmits the above-mentioned power electrical energy to the above-mentioned power circuit, and the VCC power supply is input to the input power supply VCC1 of the power circuit.

[0054] In this embodiment, the above-mentioned power circuit 20 includes: an input power supply receiving device, an output power supply transmitting device, a power chip, a grounding device, a second capacitor, a third capacitor, a fourth capacitor, a fourth resistor, a fifth resistor, a sixth resistor, a diode, and an inductor.

[0055] It should be noted that the above-mentioned second capacitor, the above-mentioned third capacitor, and the above-mentioned fourth capacitor are filter capacitors, the above-mentioned fourth resistor is an enable resistor, and the above-mentioned fifth resistor and the above-mentioned sixth resistor are voltage-dividing resistors.

[0056] Specifically, the above-mentioned power circuit includes: an input power supply VCC1 receiving device, an output power supply VCC_M transmitting device, a filter capacitor C1 (second capacitor), a filter capacitor C5 (third capacitor), a filter capacitor C3 (fourth capacitor), an enable resistor R5 (fourth resistor), a diode D1, a voltage-dividing resistor R2 (fifth resistor), a voltage-dividing resistor R6 (sixth resistor), and an inductor L1.

[0057] It should be noted that the above-mentioned filter capacitor C3 (fourth capacitor) can also be used to store the electrical energy generated by the U1 chip.

[0058] Specifically, the connection relationship is as Figure 2 shown. The above-mentioned output power supply transmitting device and the above-mentioned diode are connected in series to the first interface of the above-mentioned power chip. The above-mentioned output power supply transmitting device is connected to the above-mentioned grounding device through the above-mentioned fourth capacitor. The second interface of the above-mentioned power chip is connected to the above-mentioned grounding device. The above-mentioned fifth resistor is connected to the third interface of the above-mentioned power chip and is connected in parallel with the above-mentioned output power supply transmitting device. The third interface of the above-mentioned power chip is connected to the above-mentioned grounding device through the sixth resistor. The fourth interface of the above-mentioned power chip is connected to the above-mentioned input power supply receiving device through the above-mentioned fourth resistor. The fifth interface of the above-mentioned power chip is connected to the above-mentioned grounding device through the above-mentioned third capacitor. The sixth interface of the above-mentioned power chip is connected to the above-mentioned input power supply receiving device and is connected in parallel with the above-mentioned fourth resistor. The above-mentioned input power supply receiving device is connected to the above-mentioned grounding device through the above-mentioned second capacitor. The above-mentioned inductor is connected in parallel with the above-mentioned power chip.

[0059] Optionally, the implementation form of the power circuit can also be realized in a buck form such as LDO or BUCK, which is beneficial to adapting to the voltage requirements of the output end and reducing costs.

[0060] In this embodiment, the above power supply circuit is specifically configured to: when the above power supply enabling circuit transmits the above power supply electrical energy to the above power supply circuit, the power supply chip generates the above target electrical energy based on the above power supply electrical energy.

[0061] It should be noted that the above target electrical energy is transmitted to the above power supply cofferdam circuit through the above output power supply sending device.

[0062] Specifically, the VCC power supply is input to the input power supply VCC1 of the power supply circuit. VCC1 enables the chip U1 to work through the resistor R5. The chip U1 generates the power supply voltage VCC_M (target electrical energy), stores the target electrical energy in C3, and transmits the target electrical energy to the above power supply cofferdam circuit through the third electronic switch Q2.

[0063] In this embodiment, the above power supply cofferdam circuit 30 includes: an output power supply receiving device, a power supply enabling signal receiving device, a fifth capacitor, a third electronic switch, a fourth electronic switch, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, and an eleventh resistor.

[0064] It should be noted that the above fifth capacitor is an energy storage capacitor, the above seventh resistor, the above eighth resistor, the above ninth resistor, the above tenth resistor, and the above eleventh resistor are voltage dividing resistors, and the above third electronic switch and the above fourth electronic switch are connected in series.

[0065] Specifically, an output voltage VCC-MUX receiving device, a control signal MUX-Enable receiving device, an energy storage element (e.g., an energy storage capacitor), a grounding device, an electronic switch Q2 (third electronic switch), an electronic switch Q3 (fourth electronic switch), an electronic switch Q5 (fifth electronic switch), a voltage dividing resistor R3 (seventh resistor), a voltage dividing resistor R7 (eighth resistor), a voltage dividing resistor R4 (ninth resistor), a voltage dividing resistor R8 (tenth resistor), and a voltage dividing resistor R11 (eleventh resistor).

[0066] Specifically, the connection relationship is as Figure 2 shown. The above third electronic switch and the above fourth electronic switch are connected back-to-back through the above seventh resistor, the above eighth resistor, the above ninth resistor, and the above tenth resistor. The above third electronic switch and the above fourth electronic switch are connected to the above energy storage element. The above energy storage element is connected to the above grounding device. The above fifth electronic switch and the above fourth electronic switch are connected in series. The above power supply enabling signal receiving device is connected to the above fifth electronic switch through the above eleventh resistor. The above fifth electronic switch is connected to the above grounding device.

[0067] In this embodiment, the above power supply cofferdam circuit 30 is specifically configured to: when the above power supply enabling signal is a low-level off signal, the above third electronic switch and the above fourth electronic switch are turned off.

[0068] It should be noted that when the third electronic switch and the above-mentioned fourth electronic switch are closed, the above-mentioned fifth capacitor stops outputting the above-mentioned target electric energy as an excitation power source.

[0069] Specifically, when the power enable signal MUX-Enable is turned off at a low level, the electronic switch Q5 is turned off, so that the electronic switches Q2 and Q3 are turned off, and the chip U1 in the power supply circuit stops working, and the output voltage VCC-MUX does not output.

[0070] It should be noted that if the power enable signal MUX-Enable was in the high-level open state before, the chip U1 in the power supply circuit was in the working state and transmitted the output voltage VCC-MUX (target electric energy) to the power supply cofferdam circuit, then the power supply cofferdam circuit stored the above-mentioned target electric energy in the energy storage element C4.

[0071] Optionally, if the energy storage element C4 stores charge, because the electronic switches Q2 and Q3 are designed back-to-back and are in the off state, the charge will be stored and will not be discharged.

[0072] It should be noted that the energy storage element C4 can be implemented in the form of a combined circuit, such as LC, CLC, RC or CRC, etc., which are implemented in parallel or series forms, which is beneficial to suppressing the power supply noise at the output end.

[0073] In this embodiment, the above-mentioned power supply cofferdam circuit 30 is further specifically configured to: when the above-mentioned power enable signal is a high-level connection signal, the above-mentioned third electronic switch and the above-mentioned fourth electronic switch are turned on.

[0074] It should be noted that when the third electronic switch and the above-mentioned fourth electronic switch are turned on, the above-mentioned fifth capacitor outputs the stored target electric energy as the above-mentioned excitation power source, the above-mentioned output power receiving device receives the target electric energy generated by the above-mentioned power supply electric energy, and outputs the above-mentioned target electric energy as the above-mentioned excitation power source, or stores the above-mentioned target electric energy in the above-mentioned fifth capacitor.

[0075] Specifically, when the power enable signal MUX-Enable is turned on at a high level, the high level of the power enable signal MUX-Enable acts on the electronic switch Q5, and the electronic switch Q5 is turned on to drive the electronic switches Q2 and Q3 to be turned on. Finally, the voltage source VCC_M (target electric energy) generated by the power supply circuit and the voltage in the power supply cofferdam circuit C4 are output together to generate VCC-MUX (excitation power source), and the above-mentioned excitation power source VCC_MUX is controlled to generate, and the voltage value is relatively accurate.

[0076] Through the embodiments of the present application, through the design of the above power enable circuit, the above power supply circuit, and the above power supply cofferdam circuit, the peak current demand for the front-end input of the circuit is reduced, the size of the printed circuit board (PCB) is reduced, thereby reducing the structural space and realizing the miniaturization of the product.

[0077] In addition, the service life of the battery-powered flowmeter is improved, the power consumption of the product is reduced, the peak value of the transient current of the product is reduced, and the driving signal of the product transducer is stabilized.

[0078] It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present application is not limited by the described action sequence, because according to the present application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to the present application.

[0079] It should be understood that the above device embodiments are only illustrative, and the devices of the present application can also be implemented in other ways. For example, the division of units / modules in the above embodiments is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units, modules, or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0080] In addition, without special instructions, in each embodiment of the present application, each functional unit / module can be integrated in one unit / module, or each unit / module can exist physically alone, or two or more units / modules can be integrated together. The above integrated unit / module can be implemented in the form of hardware or in the form of a software program module.

[0081] When the integrated unit / module is implemented in the form of hardware, the hardware can be a digital circuit, an analog circuit, etc. The physical implementation of the hardware structure includes but is not limited to transistors, memristors, etc. Unless otherwise specified, the processor can be any suitable hardware processor, such as CPU, GPU, FPGA, DSP, and ASIC, etc. Unless otherwise specified, the storage unit can be any suitable magnetic storage medium or magneto-optical storage medium, such as resistive random access memory (RRAM), dynamic random access memory (DRAM), static random access memory (SRAM), enhanced dynamic random access memory (EDRAM), high-bandwidth memory (HBM), hybrid memory cube (HMC), etc.

[0082] When the integrated unit / module is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in various embodiments of this application. And the aforementioned memory includes: USB flash drive, read-only memory (ROM), random access memory (RAM), mobile hard disk, magnetic disk, or optical disc, etc., all kinds of media that can store program codes.

[0083] In the above embodiments, the descriptions of each embodiment have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0084] Other embodiments of the present application will be readily apparent to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include known common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only illustrative, and the true scope and spirit of the present application are pointed out by the following claims.

[0085] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

[0086] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transducer excitation power supply cofferdam circuit, characterized in that, The circuit includes: A power enable circuit, configured to receive a power enable signal and transmit the power electrical energy output by a power supply to a power circuit based on the power enable signal; The power circuit, connected to the power enable circuit, configured to convert the power electrical energy into target electrical energy and transmit the target electrical energy to a power cofferdam circuit; The power cofferdam circuit, connected to the power circuit, configured to store the target electrical energy or output the target electrical energy as an excitation power supply.

2. The circuit according to claim 1, wherein The power enable circuit is connected to the power circuit through a first electronic switch. The power circuit is connected to the power cofferdam circuit through a third electronic switch. The power cofferdam circuit stores the target electrical energy through an energy storage element. The energy storage element is controlled through the third electronic switch and a fourth electronic switch. Among them, the third electronic switch and the fourth electronic switch are connected back to back.

3. The circuit according to claim 1, wherein The power enable circuit includes: a power supply receiving device, a power enable signal receiving device, a grounding device, a first resistor, a second resistor, a third resistor, a first capacitor, a first electronic switch, and a second electronic switch. Among them, the first resistor is a current-limiting resistor.

4. The circuit according to claim 3, characterized in that, The power supply receiving device is connected in series with the first electronic switch. The second resistor is connected in parallel with the first electronic switch. The first electronic switch and the second electronic switch are connected in series. The first resistor is connected in series with the second electronic switch. The power supply receiving device is connected to the grounding device through the first capacitor. The power enable signal receiving device is connected to the grounding device through the third resistor.

5. The circuit according to claim 3, wherein The power enable circuit is specifically configured to: When the power enable signal is a low-level off signal, the first electronic switch and the second electronic switch are turned off. Among them, when the first electronic switch and the second electronic switch are turned off, the power enable circuit stops transmitting the power electrical energy to the power circuit; When the power enable signal is a high-level on signal, the first electronic switch and the second electronic switch are turned on. Among them, when the first electronic switch and the second electronic switch are turned on, the power enable circuit transmits the power electrical energy to the power circuit.

6. The circuit according to claim 1, wherein The power circuit includes: an input power supply receiving device, an output power supply transmitting device, a power chip, a grounding device, a second capacitor, a third capacitor, a fourth capacitor, a fourth resistor, a fifth resistor, a sixth resistor, a diode, and an inductor. Among them, the second capacitor, the third capacitor, and the fourth capacitor are filter capacitors. The fourth resistor is an enable resistor. The fifth resistor and the sixth resistor are voltage-dividing resistors.

7. The circuit according to claim 6, characterized in that, The output power supply transmitting device and the diode are connected in series to the first interface of the power supply chip. The output power supply transmitting device is connected to the grounding device through the fourth capacitor. The second interface of the power supply chip is connected to the grounding device. The fifth resistor is connected to the third interface of the power supply chip and is connected in parallel with the output power supply transmitting device. The third interface of the power supply chip is connected to the grounding device through the sixth resistor. The fourth interface of the power supply chip is connected to the input power supply receiving device through the fourth resistor. The fifth interface of the power supply chip is connected to the grounding device through the third capacitor. The sixth interface of the power supply chip is connected to the input power supply receiving device and is connected in parallel with the fourth resistor. The input power supply receiving device is connected to the grounding device through the second capacitor. The inductor is connected in parallel with the power supply chip.

8. The circuit according to claim 6, wherein, The power supply circuit is specifically configured to: When the power supply enabling circuit transmits the power supply electrical energy to the power supply circuit, the power supply chip generates the target electrical energy based on the power supply electrical energy. Among them, the target electrical energy is transmitted to the power supply cofferdam circuit through the output power supply transmitting device.

9. The circuit according to claim 1, characterized in that, The power supply cofferdam circuit includes: an output power supply receiving device, a power supply enabling signal receiving device, an energy storage element, a grounding device, a third electronic switch, a fourth electronic switch, a fifth electronic switch, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, and an eleventh resistor. Among them, the seventh resistor, the eighth resistor, the ninth resistor, the tenth resistor, and the eleventh resistor are voltage dividing resistors.

10. The circuit according to claim 9, wherein The third electronic switch and the fourth electronic switch are connected back-to-back through the seventh resistor, the eighth resistor, the ninth resistor, and the tenth resistor. The third electronic switch and the fourth electronic switch are connected to the energy storage element. The energy storage element is connected to the grounding device. The fifth electronic switch and the fourth electronic switch are connected in series. The power supply enabling signal receiving device is connected to the fifth electronic switch through the eleventh resistor. The fifth electronic switch is connected to the grounding device.

11. The circuit according to claim 9, characterized in that, The power supply cofferdam circuit is specifically configured to: When the power supply enabling signal is a low-level shutdown signal, the fifth electronic switch, the third electronic switch, and the fourth electronic switch are turned off. Among them, when the third electronic switch and the fourth electronic switch are turned off, the energy storage element stops outputting the target electrical energy as the excitation power supply; When the power supply enabling signal is a high-level on signal, the fifth electronic switch, the third electronic switch, and the fourth electronic switch are turned on. Among them, when the third electronic switch and the fourth electronic switch are turned on, the energy storage element outputs the stored target electrical energy as the excitation power supply. The output power supply receiving device receives the target electrical energy generated by the power supply electrical energy and outputs the target electrical energy as the excitation power supply, or stores the target electrical energy in the energy storage element.

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