Voltage compensation circuit, voltage compensation method, and circuit system for performing voltage compensation

Abstract

The present disclosure provides a voltage compensation circuit, a voltage compensation method, and a circuit system capable of performing voltage compensation. The voltage of a monitored circuit is collected, an actual output voltage of the monitored circuit is determined on the basis of the collected voltage, and on the basis of the comparison between the actual output voltage and a preset voltage, the voltage of the monitored circuit is compensated when a voltage compensation condition is satisfied. Therefore, when the output voltage of the monitored circuit is unstable, a corresponding required voltage can still be provided, thereby ensuring the stable operation of the monitored circuit, avoiding functional defects caused by an undervoltage condition of the circuit, and improving the reliability of the circuit.

Description

Voltage compensation circuit, voltage compensation method, and circuit system for voltage compensation

[0001] This disclosure claims priority to Chinese Patent Application No. 202411438389.8, filed on October 15, 2024, entitled "Voltage Compensation Circuit, Voltage Compensation Method and Circuit System for Voltage Compensation", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of voltage control, and more particularly to a voltage compensation circuit, a voltage compensation method, and a circuit system capable of performing voltage compensation. Background Technology

[0003] In many circuits, voltage instability may occur due to circuit losses or operational factors, which in turn affects the circuit's operating status.

[0004] Due to the requirements of the components in the load circuit, the input voltage signal is divided by each module, which may cause components in subsequent modules to malfunction. Taking a solenoid valve as an example, in a solenoid valve circuit, continuous operation can lead to excessively high coil temperature and increased internal resistance, potentially altering its original operating mode and posing a safety hazard. Existing DC power supplies are generally stored energy sources; for example, vehicle power supplies gradually deplete during use, affecting the voltage supplied to each module and posing a risk of some modules malfunctioning due to insufficient power supply.

[0005] One related technology employed a BOOST circuit to increase voltage, aiming to address the problem of excessive power consumption causing severe overheating and even burnout of components in the BOOST circuit. However, this did not solve the problems of low power efficiency and energy waste.

[0006] Voltage summing is widely used in analog signal processing. It combines multiple analog signals to obtain the desired output. Among various power conversion methods, adders composed of integrated operational amplifiers are also an excellent way to perform voltage conversion and are commonly used in various fields. For example, in the sensor field, voltage summing can be used to combine information from multiple sensors to provide more comprehensive data; in power management circuits, voltage summing can be used to monitor and adjust the output of different power supplies to provide stable voltage and current. The widespread application of voltage summing has made analog voltage adders, capable of performing this operation, an important component in the field of analog electronic design.

[0007] There is also a related technology that discloses a circuit structure that uses analog circuits to improve the current sampling accuracy, which includes a non-inverting proportional voltage adder. However, the non-inverting proportional voltage adder has the problem of mutual coupling between signal sources, which may lead to problems such as inaccurate output voltage.

[0008] There is currently no effective solution to the above problems. Summary of the Invention

[0009] In view of this, this disclosure proposes a voltage compensation circuit, a voltage compensation method, and a circuit system capable of voltage compensation. The circuit acquires the voltage of the monitored circuit, determines the actual output voltage of the monitored circuit based on the acquired voltage, and compensates the voltage of the monitored circuit when the voltage compensation conditions are met by comparing the actual output voltage with a preset voltage. Thus, even when the output voltage of the monitored circuit is unstable, the corresponding required voltage can be provided, ensuring the stable operation of the monitored circuit, avoiding functional defects caused by circuit voltage deficiency, and improving the reliability of the circuit.

[0010] According to one aspect of this disclosure, a voltage compensation circuit is provided, characterized in that it comprises:

[0011] The voltage acquisition module is configured to acquire the voltage of the monitored circuit.

[0012] The control module is configured to determine the actual output voltage of the monitored circuit based on the acquired voltage, and to determine whether the voltage compensation condition is met by comparing the actual output voltage with the preset voltage.

[0013] The voltage compensation module is configured to compensate the voltage of the monitored circuit so that the actual output voltage is consistent with the preset voltage.

[0014] In some implementations, the preset voltage is a preset voltage range. When the actual output voltage is not within the preset voltage range, it is determined that the voltage compensation condition is met.

[0015] And / or,

[0016] The monitored circuit is the drive circuit of the solenoid valve.

[0017] In some implementations...

[0018] Acquiring the voltage of the monitored circuit includes: acquiring the voltage of at least two parts of the monitored circuit;

[0019] The voltage compensation module includes an adder, which is configured to superimpose the voltages of at least two acquired portions to obtain the actual output voltage.

[0020] In some implementations...

[0021] The adder is an inverse proportional adder.

[0022] In some implementations...

[0023] The adder is an inverting proportional adder composed of an integrated operational amplifier.

[0024] In some implementations...

[0025] The circuit also includes a current bootstrap module, and the input current of the voltage compensation module is provided by the output current of the voltage compensation module after processing by the current bootstrap module.

[0026] In some implementations...

[0027] The current bootstrap module includes a current amplifier, which amplifies the output current of the voltage compensation module and provides it to the voltage compensation module as the input current.

[0028] In some implementations...

[0029] It also includes: a function detection module, which is configured to detect whether the monitored circuit is in a working state after the circuit is powered on;

[0030] When the monitored circuit is detected to be in an active state, the voltage acquisition module begins to acquire the voltage of the monitored circuit, and / or, when the monitored circuit is detected to be not in an active state, the control module performs error processing. According to another aspect of this disclosure, a circuit system capable of voltage compensation is provided, characterized in that it includes: a voltage compensation circuit and a monitored circuit as described above.

[0031] According to the voltage compensation circuit, voltage compensation method, and circuit system capable of voltage compensation proposed in this disclosure, the voltage of the monitored circuit is collected, the actual output voltage of the monitored circuit is determined based on the collected voltage, and the voltage of the monitored circuit is compensated when the voltage compensation conditions are met by comparing the actual output voltage with a preset voltage. Thus, even when the output voltage of the monitored circuit is unstable, the corresponding required voltage can be provided to ensure the stable operation of the monitored circuit, avoid functional defects caused by circuit voltage deficiency, and improve the reliability of the circuit.

[0032] The above description is only an overview of the technical solution of this disclosure. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, the preferred embodiments of this disclosure are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0033] The accompanying drawings, which form part of this disclosure, are used to provide a further understanding of this disclosure. The illustrative embodiments of this disclosure and their descriptions are used to explain this disclosure and do not constitute an undue limitation of this disclosure. In the drawings:

[0034] Figure 1 shows a schematic diagram of an embodiment of a circuit system capable of voltage compensation according to the present disclosure;

[0035] Figure 2 shows a schematic diagram of an embodiment of a voltage compensation circuit of the present disclosure;

[0036] Figure 3 shows a schematic diagram of one embodiment of the workflow of Figure 2;

[0037] Figure 4 shows a schematic diagram of an embodiment of a voltage compensation method of the present disclosure;

[0038] Figure 5 shows a schematic diagram of an embodiment of a voltage compensation method of the present disclosure. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this disclosure clearer, the technical solutions of this disclosure will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0040] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0041] Figure 1 shows a schematic diagram of an embodiment of a voltage compensation circuit system according to this disclosure. As shown, the circuit system includes a monitored circuit 1 and a voltage compensation circuit 2. The monitored circuit 1 can be a load circuit that is susceptible to voltage fluctuations, such as a drive circuit, detection circuit, or control circuit; for example, it can be a drive circuit of a solenoid valve. The voltage compensation circuit 2 includes a voltage acquisition module 21, configured to acquire the voltage of the monitored circuit; a control module 22, configured to determine the actual output voltage of the monitored circuit based on the acquired voltage, and to determine whether the voltage compensation condition is met by comparing the actual output voltage with a preset voltage; and a voltage compensation module 23, configured to compensate the voltage of the monitored circuit so that the actual output voltage is consistent with the preset voltage, thereby ensuring the stable operation of the circuit.

[0042] As one implementation, the preset voltage can be a preset voltage range. When the actual voltage is outside the preset voltage range, it is determined that the voltage compensation condition is met. Since the voltage at which the end load can operate normally can be a range, for example (U... * +u1, U * As long as the voltage is within this range, the load can operate normally. Therefore, the preset voltage for comparison can be a range, not limited to a single value. For example, a solenoid valve can operate normally within a voltage range of 22-24V. If the voltage supplied to the load is not within this preset voltage range, it will cause the load to operate abnormally, become unstable, fail to operate, or even be damaged. In this case, voltage compensation is considered necessary to meet the voltage compensation conditions.

[0043] The actual output voltage may or may not be the acquired voltage. In one implementation, during circuit design, each part often has a corresponding operating voltage, which can be the same or different. The output voltage that the circuit ultimately needs to provide to the end load must match the load's operating voltage. In one implementation, this output voltage can be the sum of at least two of the operating voltages of each part. To address this, this disclosure can acquire the voltages of at least two parts of the monitored circuit, thus simplifying the circuit. Furthermore, when the exact required voltage may not exist in the circuit, it can selectively acquire the appropriate voltage module already present in the existing circuit for voltage compensation. As one possible implementation, the actual output voltage is obtained by superimposing the acquired voltages of at least two parts using a voltage compensation module, for example, including an adder. Then, the actual output voltage obtained after the superposition operation is compared with a preset voltage to determine whether the voltage compensation condition is met. As an example, the voltages of three parts of the monitored circuit required to achieve the target, such as U1, U2, and U3, are acquired. The output voltage U is obtained by superimposing the acquired voltages of the three parts using an adder. O , will UO The voltage is compared with a preset voltage or a preset voltage range to determine whether the voltage compensation condition has been met. In some embodiments, the adder is an inverting proportional adder, which avoids the problem of mutual coupling between signal sources present in non-inverting proportional voltage adders, thus better ensuring the accuracy of the output voltage. As one implementation, the adder is an inverting proportional adder composed of an integrated operational amplifier, which is low in cost and effective.

[0044] Furthermore, if the signal source provides a large current, it will affect the voltage to be transformed, thus impacting the power supply performance. As one implementation, the voltage compensation circuit 2 also includes a current bootstrap module (not shown). The input current of the voltage compensation module 23 is provided by the output current of the voltage compensation module 23 after processing by the current bootstrap module. Therefore, the input current of the voltage compensation module 23 is provided by itself; that is, its output current, after passing through the bootstrap module, becomes the bootstrap current, which then serves as the input current for its own input loop. This significantly reduces the current that the signal source (e.g., voltages U1, U2, U3, etc. from the three parts of the monitored circuit) needs to provide to the circuit, effectively reducing the overall input current of the circuit and thus increasing the circuit's input resistance. The output voltage obtained in this way is set to compensate for the voltage deficit in the corresponding circuit, reducing the power loss to be transformed without adding additional power, maintaining circuit stability, solving the problem of excessively low input resistance, improving the signal source performance, and enhancing power quality. In some embodiments, the current bootstrap module includes a current amplifier, which amplifies the output current of the voltage compensation module and provides it to the voltage compensation module as the input current, thereby compensating for the voltage deficit in the corresponding circuit.

[0045] Figure 2 shows a schematic diagram of one embodiment of a voltage compensation circuit of the present disclosure.

[0046] As shown in the figure, the voltage compensation module A1 includes, for example, an adder composed of an integrated operational amplifier to perform addition operations. The current bootstrap module A2 includes, for example, a current bootstrap amplifier to provide bootstrap current to the input circuit. Voltages U1, U2, and U3 are the input signal sources, collectively referred to as U... in The output voltage is U O The voltage compensation module A1 performs voltage compensation via a control signal provided by the control module (not shown in Figure 2). It acquires the required terminal voltages U1, U2, and U3 to achieve the target voltage. The integrated operational amplifier in A1 then superimposes these acquired terminal voltages to obtain the output voltage U. O At the same time, a current bootstrap method is adopted so that the input current of the integrated operational amplifier of A1 is provided by the circuit itself.

[0047] Figure 3 shows a schematic diagram of one embodiment of the workflow of Figure 2.

[0048] As shown in the figure, in step S31, the required operating voltage of the end load is first analyzed as the preset voltage. The end load is, for example, a solenoid valve. In step S32, the voltages of multiple parts of the acquisition circuit (e.g., the drive circuit of the solenoid valve) such as U1, U2, U3, etc. are collected and input into the voltage compensation circuit. In step S33, the voltage compensation circuit performs voltage transformation through the adder, which is its voltage compensation module, and outputs voltage U0 in step S34.

[0049] As an implementation, the voltage compensation circuit 2 may also include a function detection module, configured to detect whether the monitored circuit is in a working state after the circuit is powered on; when the monitored circuit is detected to be in a working state, the voltage acquisition module starts to acquire the voltage of the monitored circuit, and / or, when the monitored circuit is detected to be not in a working state, the control module performs error processing.

[0050] Figure 4 shows a schematic diagram of an embodiment of a voltage compensation method of the present disclosure.

[0051] Step S41: First, define the circuit preset voltage U4 and its operating fluctuation range (u1, u2);

[0052] Step S42, the circuit is energized. For example, in a solenoid valve drive circuit, the energization of the circuit is controlled by a switch;

[0053] Step S43: After the circuit is powered on, the status information fed back by the circuit is detected to the control module, and the control module judges the circuit working status, that is, whether the circuit is powered on and whether it is in working state. For example, it judges whether the circuit has a fault based on whether there is normal voltage and current passing through.

[0054] Steps S44-S45: When the circuit malfunctions and is not in operation, the control module, such as the electronic control unit (ECU), will output a corresponding response (error report).

[0055] Step S46: When the drive circuit is detected to be energized, it proves that this part is conducting and can operate. The acquisition module acquires the voltage of the corresponding circuit to obtain the actual operating voltage U. The control module compares it with the specified preset voltage, for example, to determine whether the actual operating voltage is within the preset voltage fluctuation range, that is, to determine whether ΔU = U - U1 ∈ (u1, u2). When ΔU = U - U1 ∈ (u1, u2), the compensation is completed.

[0056] Step S47: If the actual operating voltage differs from the preset voltage, the control module controls the voltage compensation module to compensate the circuit voltage. In this embodiment, when the voltage change [i.e., ΔU] exceeds the range (u1, u2), it is determined that voltage loss is likely to affect the function. Therefore, the control module issues a control command to compensate for the missing voltage through the voltage compensation module. Taking a solenoid valve as an example, the normal operating voltage range of a solenoid valve is 22-24V. If the voltage fed back to the control module after a long period of circuit operation is 23V∈(22V, 24V), it is determined to be in normal operating condition; if the feedback voltage is... If the voltage is (22V, 24V), it is considered that it may affect the function of the solenoid valve, and voltage compensation can be performed.

[0057] Repeat steps S46 and S47 to ensure stable operation of the circuit.

[0058] Figure 5 shows a schematic diagram of an embodiment of a voltage compensation method of this disclosure. As shown in the figure:

[0059] Step S51: Collect the voltage of the monitored circuit;

[0060] Step S52: Determine the actual output voltage of the monitored circuit based on the collected voltage, and determine whether the voltage compensation condition is met by comparing the actual output voltage with the preset voltage.

[0061] Step S53: Compensate the voltage of the monitored circuit to make the actual output voltage consistent with the preset voltage.

[0062] Since the processing and functions implemented by the method in this embodiment are basically the same as those in the foregoing embodiments, principles and examples, any details not covered in this embodiment can be found in the relevant descriptions in the foregoing embodiments, and will not be repeated here.

[0063] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, systems, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0064] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means configured to implement the functions specified in one or more blocks of the flowchart illustrations and / or one or more blocks of the block diagrams.

[0065] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

[0066] It should be noted that, unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this disclosure shall still fall within the scope of the technical solutions of this disclosure.

Claims

1. A voltage compensation circuit, comprising: The voltage acquisition module is configured to acquire the voltage of the monitored circuit. The control module is configured to determine the actual output voltage of the monitored circuit based on the acquired voltage, and to determine whether the voltage compensation condition is met by comparing the actual output voltage with the preset voltage. The voltage compensation module is configured to compensate the voltage of the monitored circuit so that the actual output voltage is consistent with the preset voltage.

2. The circuit as described in claim 1, wherein: The preset voltage is a preset voltage range. When the actual output voltage is not within the preset voltage range, it is determined that the voltage compensation condition is met.

3. The circuit as described in claim 1 or 2, wherein: Acquiring the voltage of the monitored circuit includes: acquiring the voltage of at least two parts of the monitored circuit; The voltage compensation module includes an adder, which is configured to superimpose the voltages of at least two acquired portions to obtain the actual output voltage.

4. The circuit as described in claim 3, wherein: The adder is an inverse proportional adder.

5. The circuit as described in claim 4, wherein: The adder is an inverting proportional adder composed of an integrated operational amplifier.

6. The circuit as described in any one of claims 1 to 3, wherein: The circuit also includes a current bootstrap module, and the input current of the voltage compensation module is provided by the output current of the voltage compensation module after processing by the current bootstrap module.

7. The circuit as claimed in claim 6, wherein: The current bootstrap module includes a current amplifier, which amplifies the output current of the voltage compensation module and provides it to the voltage compensation module as the input current.

8. The circuit as claimed in claim 1, wherein, Also includes: The function detection module is configured to detect whether the monitored circuit is in a working state after the circuit is powered on. When the monitored circuit is detected to be in operation, the voltage acquisition module begins to acquire the voltage of the monitored circuit.

9. The circuit as claimed in claim 1, wherein: The monitored circuit is the drive circuit of the solenoid valve.

10. The circuit as claimed in claim 1, wherein: The preset voltage is a preset voltage range. When the actual output voltage is not within the preset voltage range, it is determined that the voltage compensation condition is met. The monitored circuit is the drive circuit of the solenoid valve.

11. The circuit as claimed in claim 1, wherein, It also includes: a function detection module, which is configured to detect whether the monitored circuit is in a working state after the circuit is powered on; When the monitored circuit is detected to be not in operation, the control module performs error handling.

12. The circuit as claimed in claim 1, wherein, Also includes: The function detection module is configured to detect whether the monitored circuit is in a working state after the circuit is powered on. When the monitored circuit is detected to be in operation, the voltage acquisition module begins to acquire the voltage of the monitored circuit; when the monitored circuit is detected to be out of operation, the control module performs error processing.

13. A voltage compensation method, Collect the voltage of the monitored circuit; The actual output voltage of the monitored circuit is determined based on the collected voltage. The voltage compensation condition is then determined by comparing the actual output voltage with the preset voltage. The voltage of the monitored circuit is compensated to make its actual output voltage consistent with the preset voltage.

14. A circuit system capable of voltage compensation, comprising: The voltage compensation circuit and the monitored circuit as described in claim 1.

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