Power supply simulation device and detection system

Abstract

The utility model discloses a power supply simulation device and a detection system, and belongs to the field of power supplies and tests. The power supply simulation device comprises a power supply simulation module, a first control switch, a voltage detection module, a first connection contact and a second connection contact. The first end of the power supply simulation module is electrically connected with the first end of the first control switch, the second end of the first control switch is electrically connected with the first connecting contact, the second connecting contact is electrically connected with the second end of the power supply simulation module, and the first end of the power supply simulation module is electrically connected with the voltage detection module; wherein the first connection contact and the second connection contact are used for being connected with a target power receiving device, the power supply simulation module comprises a direct-current power supply and a parameter simulator which are connected, the parameter simulator is used for being matched with the direct-current power supply to simulate various parameters of a target power supply, and the parameters of the target power supply comprise at least one of equivalent internal resistance and equivalent capacitance. And the negative electrode end of the direct-current power supply is electrically connected with the second connecting contact.

Description

Technical Field

[0001] This application belongs to the field of power supply and testing, and specifically relates to a power supply simulation device and testing system. Background Technology

[0002] The use of fluid flow meters is becoming increasingly widespread. Many fluid flow meters have built-in batteries that provide power for their operation. Typically, fluid flow meters are legally mandated measuring instruments, requiring type approval testing and factory testing. Currently, during type approval testing of fluid flow meters with built-in batteries, the batteries are removed, and the flow meter is installed on the testing system. This system does not have a dedicated power supply for the flow meter; instead, an independent DC power supply is connected to it. The system then tests the accuracy of the flow rate readings when different voltages are supplied by the DC power source. However, the DC power supply used in the detection system typically provides several amperes of current, while the current provided by the battery in the fluid flow meter is usually a few milliamperes to tens of milliamperes. The power supply capacity of the battery in the fluid flow meter differs from that of the DC power supply in the detection system by one to two orders of magnitude. For fluid flow meters that rely on energy conversion to achieve measurement and metering, such as ultrasonic water meters, even if the DC power supply simulates the minimum voltage of battery power, the power supply capacity of the DC power supply at this time far exceeds the power supply capacity of the battery's maximum operating voltage. As a result, this test cannot simulate the real effect of battery power, and the test results cannot reflect the real working condition of the fluid flow meter's built-in battery power, and may even lead to errors in measurement results and conclusions. Utility Model Content

[0003] The purpose of this application is to provide a power supply simulation device and detection system to simulate the actual power supply situation of the tested object as much as possible, especially the actual power supply situation of the tested object powered by a built-in battery. This solves the problem that even if the existing DC power supply simulates the minimum voltage of the battery power supply, the power supply capacity of the DC power supply is far greater than the power supply capacity of the battery's maximum operating voltage. As a result, the test results cannot reflect the actual working situation of the fluid flow meter powered by the built-in battery, and even the measurement results and conclusions may be incorrect.

[0004] In a first aspect, embodiments of this application provide a power simulation device, which includes: a power simulation module, a first control switch, a voltage detection module, a first connecting contact point, and a second connecting contact point;

[0005] The first end of the power simulation module is electrically connected to the first end of the first control switch, the second end of the first control switch is electrically connected to the first connecting contact, the second connecting contact is electrically connected to the second end of the power simulation module, and the first end of the power simulation module is electrically connected to the voltage detection module.

[0006] The first and second connecting contacts are used to connect to the target power receiving device. The power simulation module includes a connected DC power supply and a parameter simulator. The parameter simulator is used to cooperate with the DC power supply to simulate various parameters of the target power supply. The parameters of the target power supply include at least one of equivalent internal resistance and equivalent capacitance. The negative terminal of the DC power supply is electrically connected to the second connecting contact.

[0007] Optionally, the parameter simulator includes an adjustable resistor;

[0008] The first end of the adjustable resistor is electrically connected to the first end of the first control switch and the voltage detection module, and the second end of the adjustable resistor is electrically connected to the positive terminal of the DC power supply.

[0009] Optionally, the parameter simulator further includes an adjustable capacitor;

[0010] The first end of the adjustable capacitor is electrically connected to the first end of the power supply simulation module and the first end of the first control switch, respectively. The second end of the adjustable capacitor is electrically connected to the negative terminal of the DC power supply and the second connection contact point, respectively.

[0011] Optionally, the power supply simulation device further includes a second control switch and a first current detection module;

[0012] The first end of the second control switch is electrically connected to the first end of the first control switch, the first end of the first current detection module is electrically connected to the second end of the second control switch and the second connecting contact, and the second end of the first current detection module is electrically connected to the negative terminal of the DC power supply.

[0013] Optionally, the parameter simulator includes an adjustable capacitor;

[0014] The first end of the adjustable capacitor is electrically connected to the positive terminal of the DC power supply and the first end of the first control switch, respectively. The second end of the adjustable capacitor is electrically connected to the negative terminal of the DC power supply and the second connection contact.

[0015] Optionally, the positive terminal of the DC power supply is electrically connected to the voltage detection module.

[0016] Optionally, the power simulation device further includes an equivalent load and a third control switch;

[0017] The first terminal of the third control switch is electrically connected to the first terminal of the first control switch, the second terminal of the third control switch is electrically connected to the first terminal of the equivalent load, and the second terminal of the equivalent load is electrically connected to the negative terminal of the DC power supply and the second connecting contact.

[0018] The load value of the equivalent load is adjustable, and the equivalent load is used to simulate the rated value of the equivalent load parameter of the target power receiving device.

[0019] Optionally, the power supply simulation device further includes a signal generation module;

[0020] The first end of the first control switch and the first end of the third control switch are electrically connected to the first end of the power simulation module via wires. The signal generation module is coupled to the wires and is used to generate and emit a target signal so that the target signal is coupled to the wires.

[0021] Optionally, the signal generation module includes a target signal generation unit and a signal coupling unit;

[0022] The target signal generating unit is electrically connected to the signal coupling unit, and the signal coupling unit is coupled to the wire;

[0023] The target signal generating unit is used to generate and emit a target signal, and the signal coupling unit is used to couple the target signal to the wire.

[0024] Optionally, the second end of the equivalent load is electrically connected to the voltage detection module.

[0025] Optionally, the first terminal of the first control switch is electrically connected to the voltage detection module.

[0026] Optionally, the power supply simulation device further includes a second current detection module;

[0027] The first terminal of the second current detection module is electrically connected to the second terminal of the equivalent load, and the second terminal of the second current detection module is electrically connected to the negative terminal of the DC power supply.

[0028] Optionally, the power supply simulation device further includes a third current detection module;

[0029] The first terminal of the third current detection module is electrically connected to the second terminal of the equivalent load and the second connecting contact point, respectively, and the second terminal of the third current detection module is electrically connected to the negative terminal of the DC power supply.

[0030] Optionally, the power simulation device further includes a controller;

[0031] The DC power supply, parameter simulator, voltage detection module, first control switch, third control switch, and equivalent load are all electrically connected to the controller. The controller is used to control the configuration of the DC power supply and the parameter simulator to simulate various parameters and their values ​​of the target power supply, and to control the first control switch and the third control switch to be turned on or off. It is also used to adjust the load parameter value of the equivalent load and to obtain the measurement value of the voltage detection module.

[0032] Optionally, the power simulation device further includes a display module;

[0033] The display module is electrically connected to the controller, and the display module is used to display various information transmitted by the controller.

[0034] Optionally, the power simulation device further includes an input module;

[0035] The input module is electrically connected to the controller, and the input module is used to transmit instructions and / or various parameter values ​​to the controller.

[0036] Optionally, the power simulation device further includes a communication module;

[0037] The communication module is electrically connected to the controller and is used to communicate with a host computer so that the host computer can transmit instructions and / or various parameter values ​​to the controller through the communication module.

[0038] Optionally, the power simulation device has a first mode and a second mode;

[0039] When the power simulation device is in the first mode, the first control switch is turned on and the third control switch is turned off.

[0040] When the power simulation device is in the second mode, the first control switch is off and the third control switch is on.

[0041] Optionally, the first control switch and the third control switch are at least one of a MOSFET and a relay switch.

[0042] Secondly, embodiments of this application provide a detection system, which includes the power simulation device described in any one of the first aspects above.

[0043] Optionally, the detection system further includes: a control component, an excitation generation component, a measuring fixture component, a fluid supply component, and a measuring component;

[0044] The fluid supply assembly is connected to the measuring fixture assembly. The measuring fixture assembly includes one or more serial meter modules, which are used to connect and clamp a fixed fluid flow meter in series. The fluid supply assembly is used to supply fluid to the fluid flow meter. The measuring assembly is used to receive and measure the fluid flowing out of the fluid flow meter, thereby measuring and comparing the fluid flow meter.

[0045] The excitation generating component is connected to the control component, and the excitation generating component is used to output an excitation signal to the fluid flow meter. The excitation signal includes at least one of a power supply with adjustable characteristics and an ultrasonic wave with adjustable characteristics.

[0046] The power simulation device is electrically connected to the fluid flow meter clamped and fixed by the serial meter module.

[0047] Thirdly, embodiments of this application provide a detection method applied to the power supply simulation device described in any one of the first aspects above, the detection method comprising:

[0048] Connect the positive and negative power input contacts of the target power receiving device to the first connection contact and the second connection contact respectively, and control the first control switch to be turned on.

[0049] Configure the parameter values ​​of each parameter of the parameter simulator to simulate the rated values ​​of each parameter of the target power supply, obtain the measured values ​​of the voltage detection module, and adjust the output voltage of the DC power supply according to the measured values ​​of the voltage detection module until the measured values ​​of the voltage detection module meet the preset requirements.

[0050] Fourthly, embodiments of this application provide a detection method applied to the power supply simulation device described in any one of the first aspects above, the detection method comprising:

[0051] Configure the parameter values ​​of each parameter in the parameter simulator to simulate the rated values ​​of each parameter of the target power supply;

[0052] The measured value of the voltage detection module is obtained. If the measured value of the voltage detection module meets the requirements, the first control switch is turned on to connect the positive power contact and the negative power contact of the power input contact of the target power receiving device to the first connection contact and the second connection contact, respectively.

[0053] Optionally, the power simulation device includes a third control switch and an equivalent load; acquiring the measured value of the voltage detection module, and if the measured value of the voltage detection module meets the requirements, controlling the first control switch to turn on, connecting the positive and negative power input contacts of the target power receiving device to the first connection contact and the second connection contact respectively, including:

[0054] Obtain the rated equivalent load value of the target power receiving device under the test target voltage, control the first control switch to open and control the third control switch to open, and adjust the equivalent load value of the equivalent load according to the rated equivalent load value of the target power receiving device until the equivalent load value of the equivalent load is equal to the rated equivalent load value of the target power receiving device.

[0055] The detection value of the voltage detection module is obtained, and it is determined whether the detection value meets the requirements. If the detection value meets the requirements, the first control switch is turned on and the third control switch is turned off, and the positive power contact and negative power contact of the power input contact of the target power receiving device are connected to the first connection contact and the second connection contact, respectively.

[0056] In this embodiment, since the first terminal of the power simulation module is electrically connected to the first terminal of the first control switch, the second terminal of the first control switch is electrically connected to the first connecting contact, and the second connecting contact is electrically connected to the second terminal of the power simulation module, after the first and second connecting contacts are electrically connected to the target powered device, once the first control switch is turned on, the current flowing from the power simulation module can flow to the target powered device, and the current flows from the target powered device to the power simulation module, thereby providing voltage to the target powered device. Since the power simulation module includes a connected DC power supply and a parameter simulator, current flows out from the positive terminal of the DC power supply, which can flow to the first control switch and then to the target powered device. Furthermore, the parameter simulator can simulate various parameters of the target power supply, making the voltage and / or current provided to the target powered device close to the voltage and / or current provided by the target powered device's own battery. In addition, the first terminal of the power simulation module is electrically connected to the voltage detection module, so that the voltage detection module can detect the voltage at the first terminal of the power simulation module. The first terminal of the power simulation module is electrically connected to the first terminal of the first control switch, so the voltage at the first terminal of the power simulation module is equal to the voltage at the first terminal of the first control switch. The voltage value detected by the voltage detection module is the voltage value applied to the target power receiving device, thereby determining the voltage value applied to the target power receiving device and ensuring that the voltage applied to the target power receiving device is a suitable voltage. In other words, in this embodiment, by electrically connecting the first end of the power simulation module to the first end of the first control switch, the second end of the first control switch to the first connecting contact point, and the second connecting contact point to the second end of the power simulation module, when the target power receiving device is connected to the first connecting contact point and the second connecting contact point, the parameter simulator can simulate various parameters of the battery in the target power receiving device. That is, the parameter simulator simulates various parameters of the target power supply, so that the voltage and / or current applied to the target power receiving device is close to the voltage and / or current of the battery in the target power receiving device. Therefore, the subsequent test results of the target power receiving device by the detection system are more accurate, and the test results of the target power receiving device more realistically reflect the working condition of the built-in battery of the target power receiving device. Attached Figure Description

[0057] Figure 1 This is one of the schematic diagrams illustrating a parameter simulator in a power supply simulation device provided in this application, which includes an adjustable resistor;

[0058] Figure 2 This is a second schematic diagram illustrating a parameter simulator in a power supply simulation device provided in this application, which includes an adjustable resistor;

[0059] Figure 3This is one of the schematic diagrams illustrating a parameter simulator in a power supply simulation device provided in this application, which includes an adjustable capacitor;

[0060] Figure 4 This is one of the schematic diagrams illustrating a parameter simulator in a power supply simulation device provided in this application, which includes an adjustable resistor and an adjustable capacitor;

[0061] Figure 5 This is a second schematic diagram illustrating a parameter simulator in a power supply simulation device provided in this application, which includes an adjustable resistor and an adjustable capacitor;

[0062] Figure 6 This is a third schematic diagram illustrating a parameter simulator in a power supply simulation device provided in this application, which includes an adjustable resistor and an adjustable capacitor;

[0063] Figure 7 This is a fourth schematic diagram illustrating a parameter simulator in a power supply simulation device provided in this application, which includes an adjustable resistor and an adjustable capacitor;

[0064] Figure 8 This is the fifth schematic diagram illustrating a parameter simulator in a power supply simulation device provided in this application, which includes an adjustable resistor and an adjustable capacitor;

[0065] Figure 9 This diagram illustrates a detection system provided in an embodiment of this application.

[0066] Figure 10 This diagram illustrates another detection system provided in an embodiment of this application.

[0067] Figure 11 This is one of the flowcharts illustrating another detection method provided in the embodiments of this application;

[0068] Figure 12 A second flowchart illustrating another detection method provided in the embodiments of this application;

[0069] Figure 13 This is the third flowchart illustrating another detection method provided in the embodiments of this application.

[0070] Figure label:

[0071] 1000: Power supply simulation device; 10: Power supply simulation module; 11: DC power supply; 12: Parameter simulator; 21: First control switch; 22: Second control switch; 23: Third control switch; 30: Voltage detection module; 40: First connecting contact point; 50: Second connecting contact point; 60: Equivalent load; 80: Signal generation module; 81: Target signal generation unit; 82: Signal coupling unit; 91: First current detection module; 92: Second current detection module; 93: Third current detection module; 110: Controller; 120: Display module; 130: Input module; 140: Communication module; 150: Wireless communication module; 200: Control component; 300: Excitation generation component; 400: Measuring fixture component; 410: Serial meter module; 500: Fluid supply component; 600: Measurement component. Detailed Implementation

[0072] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0073] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0074] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0075] like Figures 1 to 6As shown, the power simulation device 1000 includes: a power simulation module 10, a first control switch 21, a voltage detection module 30, a first connecting contact 40, and a second connecting contact 50; the first end of the power simulation module 10 is electrically connected to the first end of the first control switch 21, the second end of the first control switch 21 is electrically connected to the first connecting contact 40, the second connecting contact 50 is electrically connected to the second end of the power simulation module 20, and the first end of the power simulation module 10 is electrically connected to the voltage detection module 30; wherein, the first connecting contact 40 and the second connecting contact 50 are used to connect to a target power receiving device, the power simulation module 10 includes a connected DC power supply 11 and a parameter simulator 12, the parameter simulator 12 is used to cooperate with the DC power supply 11 to simulate various parameters of the target power supply, the parameters of the target power supply include at least one of equivalent internal resistance and equivalent capacitance, and the negative terminal of the DC power supply 11 is electrically connected to the second connecting contact 50.

[0076] In this embodiment, since the first end of the power simulation module 10 is electrically connected to the first end of the first control switch 21, the second end of the first control switch 21 is electrically connected to the first connecting contact 40, and the second connecting contact 50 is electrically connected to the second end of the power simulation module 20, after the first connecting contact 40 and the second connecting contact 50 are electrically connected to the target powered device, once the first control switch 21 is turned on, the current flowing from the power simulation module 10 can flow to the target powered device, and the current flows from the target powered device to the power simulation module 10, thereby providing voltage to the target powered device. Since the power simulation module 10 includes a connected DC power supply 11 and a parameter simulator 12, current flows out from the positive terminal of the DC power supply 11, which can flow to the first control switch 21 and then to the target powered device. The parameter simulator can simulate various parameters of the target power supply, so that the voltage and / or current provided to the target powered device are close to the voltage and / or current provided by the power supply (such as a battery) used by the target powered device in daily operation. In addition, the first terminal of the power simulation module 10 is electrically connected to the voltage detection module 30, so the voltage detection module 30 can detect the voltage at the first terminal of the power simulation module 10. The first terminal of the power simulation module 10 is electrically connected to the first terminal of the first control switch 21, so the voltage at the first terminal of the power simulation module 10 is equal to the voltage at the first terminal of the first control switch 21. The voltage value detected by the voltage detection module 30 is the voltage value applied to the target power receiving device, thereby determining the voltage value applied to the target power receiving device and ensuring that the voltage applied to the target power receiving device is a suitable target voltage. That is, in this embodiment of the application, by electrically connecting the first end of the power simulation module 10 to the first end of the first control switch 21, the second end of the first control switch 21 to the first connecting contact 40, and the second connecting contact 50 to the second end of the power simulation module 20, when the target power receiving device is connected to the first connecting contact 40 and the second connecting contact 50, the parameter simulator 12 can simulate various parameters of the battery in the target power receiving device. That is, the parameter simulator 12 simulates various parameters of the target power supply, so that the voltage and / or current applied to the target power receiving device are close to the voltage and / or current provided by the power supply (such as the battery) used in the daily operation of the target power receiving device. This makes the subsequent test results of the target power receiving device through the detection system more accurate and reliable, and makes the test results of the target power receiving device more realistically reflect the working condition of the power supply (such as the battery) used in the daily operation of the target power receiving device.

[0077] It should be noted that in this embodiment, the target powered device can be a fluid flow meter, and the target power source can be the battery in the fluid flow meter. Specifically, when testing the target powered device, the battery in the target powered device is removed or disconnected. Then, the positive and negative terminals of the power input of the target powered device are connected to the first contact point 40 and the second contact point 50, respectively. Power is supplied to the target powered device through the DC power supply 11. The parameter simulator 12 can simulate various parameters of the battery in the target powered device, so that the voltage and / or current applied to the target powered device is close to the voltage and / or current provided by the battery in the target powered device, ensuring that the test results of the target powered device are relatively accurate and reliable. For example, the parameter simulator 12 simulates the equivalent internal resistance of the battery in the target powered device, and for another example, the parameter simulator 12 simulates the equivalent capacitance of the battery in the target powered device.

[0078] Additionally, in some embodiments, such as Figure 1 or Figure 2 As shown, the parameter simulator 12 includes an adjustable resistor; the first end of the adjustable resistor is electrically connected to the first end of the first control switch 21 and the voltage detection module 30, respectively, and the second end of the adjustable resistor is electrically connected to the positive terminal of the DC power supply 11. With this setting, it is equivalent to simulating the equivalent resistance of the target power supply through the parameter simulator 12, and by adjusting the resistance value of the adjustable resistor, the resistance value of the adjustable resistor is made equal to the equivalent resistance of the target power supply.

[0079] Additionally, in some embodiments, such as Figure 5 or Figure 7 As shown, when the parameter simulator 12 includes an adjustable resistor, it may also include an adjustable capacitor. The first end of the adjustable capacitor is electrically connected to the first end of the adjustable resistor and the first end of the first control switch 21, respectively. The second end of the adjustable capacitor is electrically connected to the negative terminal of the DC power supply 11 and the second contact point 50, respectively. This means that the parameter simulator 12 can simultaneously simulate the equivalent resistance and equivalent capacitance of the target power supply.

[0080] Additionally, in some embodiments, such as Figure 4As shown, the power simulation device 1000 may further include a second control switch 22 and a first current detection module 91. The first end of the second control switch 22 is electrically connected to the first end of the first control switch 21. The first end of the first current detection module 91 is electrically connected to the second end of the second control switch 22 and the second connection contact 50, respectively. The second end of the first current detection module 91 is electrically connected to the negative terminal of the DC power supply 11. With this configuration, when adjusting the adjustable resistor, the first control switch 21 can be turned off and the second control switch 22 can be turned on. This allows the first current detection module 91 to determine the current flowing through the adjustable resistor, thereby determining whether the resistance value of the adjustable resistor has been adjusted to the required value, and thus calibrating the adjustable resistor. Furthermore, when the first control switch 21 is turned on, the second control switch 22 is turned off, and the target power receiving device is connected to the first connection contact 40 and the second connection contact 50, the first current detection module 91 can determine the current flowing through the target power receiving device, facilitating the determination of the power of the target power receiving device.

[0081] Additionally, in some embodiments, such as Figure 3 As shown, the parameter simulator 12 includes an adjustable capacitor. The first end of the adjustable capacitor is electrically connected to the positive terminal of the DC power supply 11 and the first terminal of the first control switch 21, respectively. The second end of the adjustable capacitor is electrically connected to the negative terminal of the DC power supply 11 and the second contact point 50, respectively. This configuration effectively simulates the equivalent capacitance of the target power supply using the parameter simulator 12. By adjusting the capacitance value of the adjustable capacitor, the capacitance value is made equal to the equivalent capacitance of the target power supply. Since the target power supply has capacitance or a capacitive effect, simulating the equivalent capacitance of the target power supply using the parameter simulator 12 allows the simulated power supply 10 to be as close as possible to the target power supply, thereby providing the voltage and / or current to the target powered device as closely as possible to the voltage and / or current provided by the target power supply to the target powered device.

[0082] Of course, in the embodiments of this application, such as Figure 6 or Figure 8 As shown, the parameter simulator 12 may also include an adjustable resistor and an adjustable capacitor. In this case, the positive terminal of the DC power supply 11 is electrically connected to the second terminal of the adjustable resistor and the first terminal of the adjustable capacitor, respectively. The first terminal of the adjustable resistor is electrically connected to the first terminal of the first control switch 21 and the voltage detection module 30, respectively. The second terminal of the adjustable capacitor is electrically connected to the negative terminal of the DC power supply 11. This means that the parameter simulator 12 can simultaneously simulate the equivalent resistance and equivalent capacitance of the target power supply.

[0083] In addition, when the parameter simulator 12 is an adjustable resistor, the parameter simulator 12 can play the role of current limiting, that is, limiting the current flowing to the first control switch 21 to avoid excessive current.

[0084] In some embodiments, the positive terminal of the DC power supply 11 is electrically connected to the voltage detection module 30.

[0085] In some embodiments, the power simulation device 1000 may also include an equivalent load 60 and a third control switch 23; the first end of the third control switch 23 is electrically connected to the first end of the first control switch 21, the second end of the third control switch 23 is electrically connected to the first end of the equivalent load 60, and the second end of the equivalent load 60 is electrically connected to the negative terminal of the DC power supply 11 and the second connection contact 50; wherein, the load value of the equivalent load 60 is adjustable, and the equivalent load 60 can be used to simulate the rated value of the equivalent load parameter of the target power receiving device.

[0086] Since the first terminal of the third control switch 23 is electrically connected to the first terminal of the first control switch 21, and the second terminal of the third control switch 23 is electrically connected to the first terminal of the equivalent load 60, and the second terminal of the equivalent load 60 is electrically connected to the negative terminal of the DC power supply 11 and the second connection contact 50, it is equivalent to the third control switch 23 being connected in parallel with the first control switch 21. Furthermore, by setting the equivalent load 60, the rated value of the equivalent load parameter of the target power receiving device can be simulated. Therefore, before testing the target power receiving device, i.e., before the target power receiving device is powered on... When the first contact point 40 and the second contact point 50 are connected, the first control switch 21 can be turned off and the third control switch 23 can be turned on. At this time, the current flowing from the DC power supply 11 can flow to the equivalent load 60. The equivalent load 60 simulates the rated value of the target power receiving device. The voltage detection module 30 can be used to determine whether the equivalent load 60 is suitable for simulation. The load value of the equivalent load 60 can be adjusted to simulate the actual scenario of the target power receiving device as realistically as possible, so that the test results are more accurate and reliable when the target power receiving device is tested in the future.

[0087] In this case, turning off the first control switch 21 and turning on the third control switch 23 is equivalent to calibrating the voltage output by the power supply simulation device 1000.

[0088] Furthermore, in this embodiment, the power simulation device 1000 has a first mode and a second mode. When the power simulation device 1000 is in the first mode, the first control switch 21 is turned on and the third control switch 23 is turned off. When the power simulation device 1000 is in the second mode, the first control switch 21 is turned off and the third control switch 23 is turned on. With this setting, when it is necessary to test the target powered device, the power simulation device 1000 can first be put into the second mode, that is, the first control switch 21 is turned off and the third control switch 23 is turned on. The equivalent load 60 simulates the rated value of the equivalent load parameter of the target powered device, which is equivalent to calibrating the voltage output by the power simulation device 1000. Then, the power simulation device 1000 is switched from the second mode to the first mode, that is, the first control switch 21 is turned on and the third control switch 23 is turned off, to test the target powered device. After self-calibration, the test results of the target powered device are more accurate and reliable.

[0089] It should be noted that when testing the target powered device, the power simulation device 1000 can first be set to the second mode. In this mode, by adjusting the equivalent load 60, the equivalent load 60 can simulate the rated value of the equivalent load parameters of the target powered device. The parameter simulator 12 can also be adjusted to simulate the various parameters of the target power supply, so that the voltage at the first terminal of the first control switch 21 is equal to the voltage to be applied to the target powered device. That is, by setting the power simulation device 1000 to the second mode, the voltage at the first terminal of the first control switch 21 can be adjusted to be the target voltage value to be applied to the target powered device. Then, the power simulation device 1000 is switched to the first mode, and the positive and negative terminals of the power input of the target powered device are connected to the first contact point 40 and the second contact point 50, respectively, to ensure that the voltage applied to the target powered device is the required target voltage value, thus ensuring that the test of the target powered device is more accurate and reliable.

[0090] Furthermore, in this embodiment, the first control switch 21 and the third control switch 23 can be at least one of a MOSFET and a relay switch. MOSFETs and relay switches are low-cost, so setting the first control switch 21 and the third control switch 23 to be at least one of a MOSFET and a relay switch can effectively reduce the cost of the power supply simulation device 1000.

[0091] The first control switch 21 and the third control switch 23 can be either MOSFETs or relay switches. Alternatively, the first control switch 21 and the third control switch 23 can be a combination of MOSFETs and relay switches, i.e., the first control switch 21 is a MOSFET and the third control switch 23 is a relay switch, or the first control switch 21 is a relay switch and the third control switch 23 is a MOSFET.

[0092] In addition, the second control switch 22 can be a MOS off or a relay switch.

[0093] In addition, in some embodiments, the power simulation device 1000 may also include a signal generation module 80; the first end of the first control switch 21 and the first end of the third control switch 23 are electrically connected to the first end of the power simulation module 10 via wires, the signal generation module 80 is coupled to the wires, and the signal generation module 80 is used to generate and emit a target signal so that the target signal is coupled to the wires.

[0094] Since the first end of the first control switch 21 and the first end of the third control switch 23 are electrically connected to the first end of the power simulation module 10 through wires, and the signal generation module 80 is coupled to the wires, when the signal generation module 80 is running, it can generate and emit a target signal, and the target signal is coupled into the wires. Then, when the first control switch 21 is turned on, the third control switch 23 is turned off, and the positive and negative terminals of the power input of the target power receiving device are connected to the first contact point 40 and the second contact point 50 respectively, the target signal can be transmitted to the target power receiving device through the first control switch 21. The target signal can simulate the power noise interference experienced by the target power receiving device in actual application, so that the test results are more accurate and reliable when testing the target power receiving device, and the test process is more in line with the actual use process of the target power receiving device. In addition, when the first control switch 21 is turned off and the third control switch 23 is turned on, the target signal can be transmitted to the equivalent load 60. When the equivalent load 60 simulates the rated value of the equivalent load parameter of the target power receiving device, the equivalent load parameter value of the target power receiving device simulated by the equivalent load 60 can be closer to the actual rated value of the target power receiving device in the actual use scenario.

[0095] In some embodiments, the signal generation module 80 may include a signal generation unit 81 and a signal coupling unit 82; the signal generation unit 81 is electrically connected to the signal coupling unit 82, and the signal coupling unit 82 is coupled to a wire; the signal generation unit 81 is used to generate and emit a target signal, and the signal coupling unit 82 is used to couple the target signal to the wire.

[0096] Since the signal generating unit 81 is electrically connected to the signal coupling unit 82, and the signal coupling unit 82 is coupled to the wire, once the signal generating unit 81 is activated, it can emit a target signal. This target signal can then be transmitted to the signal coupling unit 82, which can couple noise to the wire. The wire can then transmit the target signal to the first control switch 21 or the third control switch 23. Specifically, when the first control switch 21 is open and the third control switch 23 is closed, the target signal can be transmitted to the equivalent load 60; when the first control switch 21 is closed and the third control switch 23 is open, the target signal can be transmitted to the target power receiving device. In other words, by providing the signal generating unit 81 and the target signal coupling unit, it is convenient to couple the target signal to the wire and then transmit it to the equivalent load 60 or the target power receiving device.

[0097] It should be noted that the signal coupling unit 82 can be an inductive coupling circuit, a capacitive coupling circuit, or a combination of both. Of course, the signal coupling unit 82 can also be other types of components capable of coupling signals. The specific type of the signal coupling unit 82 is not limited in this embodiment.

[0098] In some embodiments, the positive terminal of the DC power supply 11 is electrically connected to the voltage detection module 30. With this configuration, the voltage detection module 30 can detect the voltage at the positive terminal of the DC power supply 11. Furthermore, when the parameter simulator 12 includes an adjustable resistor, and the voltage detection module 30 is electrically connected to the first terminal of the adjustable resistor, the voltage detection module 30 can detect the voltage at both the first and second terminals of the adjustable resistor. After determining the internal resistance of the adjustable resistor, the current flowing through the parameter simulator 12 can be determined. That is, by electrically connecting the second terminal of the parameter simulator 12 to the voltage detection module 30, the current flowing through the parameter simulator 12 can be easily determined.

[0099] It should be noted that when determining the current value flowing through the parameter simulator 12, the voltage value at the second terminal of the parameter simulator 12 can be subtracted from the voltage value at the first terminal of the parameter simulator 12 to obtain the voltage difference. This voltage difference is the voltage drop across the parameter simulator 12. Then, the voltage drop across the parameter simulator 12 is divided by the internal resistance of the parameter simulator 12 to obtain the current value flowing through the parameter simulator 12.

[0100] In some embodiments, the second terminal of the equivalent load 60 is electrically connected to the voltage detection module 30. With this configuration, the voltage detection module 30 can detect the voltage at the second terminal of the equivalent load 60, thus making it easier to determine the voltage drop across the equivalent load 60 and subsequently determine parameters such as the internal resistance of the equivalent load 60.

[0101] Specifically, the voltage drop across the equivalent load 60 can be obtained by subtracting the voltage at the second terminal of the equivalent load 60 from the voltage at the first terminal of the equivalent load 60. For example, once the voltage drop across the equivalent load 60 is determined, the current flowing through the equivalent load 60 can be determined, and thus the current equivalent resistance of the equivalent load 60 can be determined.

[0102] In some embodiments, the first terminal of the first control switch 21 is electrically connected to the voltage detection module 30. With this configuration, the voltage detection module 30 can detect the voltage at the first terminal of the first control switch 21. If the signal generation module 80 is running, the target signal can be transmitted to the first terminal of the first control switch 21. The voltage detection module 30 then detects the voltage carrying the target signal, facilitating analysis and determination of whether the voltage at the first terminal of the first control switch 21 meets the target requirements after the target signal has been applied.

[0103] It should be noted that, in the embodiments of this application, the voltage detection module 30 can be a voltage detection module 30 for detecting the DC voltage at a certain transient moment, or the voltage detection module 30 can be a voltage detection module 30 for detecting the DC voltage at multiple points in a certain time period, so that the detected signal can be further analyzed.

[0104] Additionally, in some embodiments, such as Figure 1 As shown, the power simulation device 1000 may further include a second current detection module 92; the first terminal of the second current detection module 92 is electrically connected to the second terminal of the equivalent load 60, and the second terminal of the second current detection module 92 is electrically connected to the negative terminal of the DC power supply 11. With this configuration, the second current detection module 92 can detect the current value flowing through the equivalent load 60 in real time. That is, when the third control switch 23 is turned on and the first control switch 21 is turned off, the equivalent load 60 simulates the rated value of the equivalent load parameter of the target power receiving device. The second current detection module 92 detects the current value flowing through the equivalent load 60 in real time, and thus, combined with the voltage value detected by the voltage detection module 30, the equivalent resistance value of the equivalent load 60 can be determined more accurately, so as to determine whether the rated internal resistance of the equivalent load 60 simulating the target power receiving device is appropriate.

[0105] It should be noted that, in this embodiment of the application, the second current detection module 92 can be an ammeter.

[0106] Additionally, in some embodiments, such as Figure 2As shown, the power simulation device 1000 may further include a third current detection module 93; the first terminal of the third current detection module 93 is electrically connected to the second terminal of the equivalent load 60 and the second connection contact 50, respectively, and the second terminal of the third current detection module 93 is electrically connected to the negative terminal of the DC power supply 11. With this configuration, when the third control switch 23 is on and the first control switch 21 is off, the third current detection module 93 can detect the current value flowing through the equivalent load 60; when the third control switch 23 is off and the first control switch 21 is on, the third current detection module 93 can detect the current value flowing through the target power receiving device. Thus, by setting the third current detection module 93, both the current of the equivalent load 60 and the current of the target power receiving device can be detected, avoiding the need to use separate current detection components to detect the current flowing through the target power receiving device and the current flowing through the equivalent load 60, which helps to reduce costs.

[0107] It should be noted that, in this embodiment of the application, the third current detection module 93 can be an ammeter.

[0108] In some embodiments, the power simulation device 1000 may further include a controller 110. The DC power supply 11, parameter simulator 12, voltage detection module 30, first control switch 21, third control switch 23, and equivalent load 60 are all electrically connected to the controller 110. The controller 110 controls the configuration of the DC power supply 11 and parameter simulator 12 to simulate various parameters and their values ​​of the target power supply, and controls the first control switch 21 and third control switch 23 to be turned on or off. It also adjusts the load parameter values ​​of the equivalent load 60 and acquires the measured values ​​from the voltage detection module 30. By setting the controller 110, the controller 110 can control the various components connected to it, thereby achieving a high degree of automation in the power simulation device 1000.

[0109] It should be noted that the controller 110 can be a circuit board with control functions, or it can be a chip with control functions. The specific type of controller 110 is not limited in this embodiment.

[0110] In some embodiments, the power simulation device 1000 may also include a display module 120; the display module 120 is electrically connected to the controller 110 and is used to display various information transmitted by the controller 110. With this configuration, the display module 120 can display various information transmitted from the controller 110 in real time, and the display of this information helps personnel to easily understand various information during the testing process when testing the target powered device.

[0111] It should be noted that the display module 120 can be a display screen, which can be an LCD display screen, or of course, an OLED display screen. The specific type of display screen is not limited in this embodiment.

[0112] In some embodiments, the power simulation device 1000 may also include an input module 130; the input module 130 is electrically connected to the controller 110 and is used to transmit commands and / or various parameter values ​​to the controller 110. With this configuration, operators can input commands and / or various parameter values ​​through the input module 130, enabling the controller 110 to control the various components connected to it. In other words, by setting the input module 130, operators can easily set various parameter values ​​to test the target powered device.

[0113] It should be noted that in this embodiment, the input module 130 can be a keyboard. Of course, the input module 130 can also be other components with input functions, such as a touch screen. The operator can input instructions and / or various parameter values ​​to the controller 110 by clicking or touching the touch screen.

[0114] In some embodiments, the power simulation device 1000 may also include a communication module 140; the communication module 140 is electrically connected to the controller 110, and is used to communicate with a host computer so that the host computer can transmit instructions and / or various parameter values ​​to the controller 110 through the communication module 140. This arrangement facilitates the electrical connection between the host computer and the controller 110, meaning the host computer can communicate with the controller 110 through the communication module 140, thereby enabling the host computer to transmit instructions and / or various parameter values ​​to the controller 110, allowing the controller 110 to control the various components connected to it.

[0115] In addition, in this embodiment, the power simulation device 1000 may further include a wireless communication module 150, which is electrically connected to the controller 110 and is used to connect to electronic devices. With this configuration, when testing a target powered device is required, the operator can connect the electronic device to the wireless communication module 150. The operator sets test parameters on the electronic device and transmits these parameters to the controller 110 via the wireless communication module 150, enabling the controller 110 to control the various components connected to it.

[0116] It should be noted that the wireless communication module 150 can be a Bluetooth module. Electronic devices include, but are not limited to, mobile phones, tablets, and laptops.

[0117] In addition, in this embodiment, the voltage detection module 30 includes a single measurement input terminal, and the power simulation device 1000 includes a multiplexer, which is electrically connected to the test input terminal. The first end of the parameter simulator 12, the first end of the first control switch 21, and the second end of the parameter simulator 12 are all electrically connected to the multiplexer. The multiplexer can be switched so that the voltage detection module 30 performs round-robin detection on the first end of the parameter simulator 12, the first end of the first control switch 21, and the second end of the parameter simulator 12.

[0118] When the second terminal of the equivalent load 60 is electrically connected to the voltage detection module 30, the second terminal of the equivalent load 60 is also electrically connected to the multiplexer.

[0119] It should be noted that the voltage detection module 30 can be a voltmeter. When the voltage detection module 30 includes a single measurement input terminal, it is equivalent to the voltmeter being connected to a single output terminal.

[0120] In some embodiments, the voltage detection module 30 includes a first measurement input terminal, a second measurement input terminal, and a third measurement input terminal. The first end of the parameter simulator 12 is electrically connected to the first measurement input terminal, the first end of the first control switch 21 is electrically connected to the second measurement input terminal, and the second end of the parameter simulator 12 is electrically connected to the third measurement input terminal. The voltage detection module 30 can simultaneously detect the first end of the parameter simulator 12, the first end of the first control switch 21, and the second end of the parameter simulator 12.

[0121] When the second end of the equivalent load 60 is electrically connected to the voltage detection module 30, the voltage detection module 30 may also include a fourth measurement input terminal, and the second end of the equivalent load 60 is electrically connected to the fourth measurement input terminal, so that the voltage detection module 30 can simultaneously detect the voltage of each component connected to it.

[0122] It should be noted that the voltage detection module 30 can include multiple voltmeters, with each voltmeter connected to a measurement input terminal. Thus, the multiple voltmeters are electrically connected to multiple components, allowing the voltage detection module 30 to simultaneously detect the voltage of each component connected to it.

[0123] This application provides a detection system, such as... Figure 9 or Figure 10 As shown, the detection system includes the power simulation device 1000 in any of the above embodiments.

[0124] In some embodiments, the detection system may further include: a control component 200, an excitation generation component 300, a measuring fixture component 400, a fluid supply component 500, and a measuring component 600; the fluid supply component 500 is connected to the measuring fixture component 400, the measuring fixture component 400 includes one or more serial meter modules 410, the serial meter modules 410 are used to connect and clamp a fixed fluid flow meter in series, the fluid supply component 500 is used to supply fluid to the fluid flow meter, and the measuring component 600 is used to receive and measure the fluid flowing out of the fluid flow meter, thereby measuring and comparing the fluid flow meter; the excitation generation component 300 is connected to the control component 200, and the excitation generation component 300 is used to output an excitation signal to the fluid flow meter; wherein, the power analog device 1000 is electrically connected to the fluid flow meter clamped and fixed by the serial meter module 410.

[0125] It should be noted that the number of power supply simulation devices 1000 can be set according to actual needs, for example, such as Figure 8 As shown, when there is only one power supply simulation device 1000, multiple fluid flow meters fixed by multiple serial meter modules 410 can be electrically connected to a single power supply simulation device 1000; for example, Figure 9 As shown, when there are multiple power simulation devices 1000, one fluid flow meter can be electrically connected to one power simulation device 1000.

[0126] This application provides a detection method, which can be applied to the power supply simulation device in any of the above embodiments, such as... Figure 11 As shown, the detection method includes:

[0127] Step 501: Connect the positive power contact and the negative power contact of the power input contact of the target power receiving device to the first connection contact and the second connection contact respectively, and control the first control switch to turn on.

[0128] Step 502: Configure the parameter values ​​of each parameter in the parameter simulator to simulate the rated values ​​of each parameter of the target power supply, obtain the measured values ​​of the voltage detection module, and adjust the output voltage of the DC power supply according to the measured values ​​of the voltage detection module until the measured values ​​of the voltage detection module meet the preset requirements.

[0129] First, the parameter values ​​of various parameters in the parameter simulator can be configured to simulate the rated values ​​of various parameters of the target power supply. Second, the voltage detection module can monitor the voltage values ​​of its connected components in real time, thus obtaining the measured values ​​from the voltage detection module. If the measured values ​​from the voltage detection module do not meet the preset requirements, the output voltage of the DC power supply needs to be adjusted, thereby adjusting the voltage at the first terminal of the parameter simulator. The voltage detection module continuously monitors the voltage value at the first terminal of the parameter simulator. During the adjustment process, once the measured values ​​from the voltage detection module meet the preset requirements, the adjustment can be stopped, allowing the target powered device to be loaded with the target voltage that meets the preset requirements, and then the target powered device can be tested.

[0130] It should be noted that the rated values ​​of each parameter of the target power supply include at least one of the rated capacitance and rated resistance.

[0131] This application provides a detection method, which can be applied to the power supply simulation device in any of the above embodiments, such as... Figure 12 As shown, the detection method includes:

[0132] Step 601: Configure the parameter values ​​of each parameter in the parameter simulator to simulate the rated values ​​of each parameter of the target power supply.

[0133] Step 602: Obtain the measured value of the voltage detection module. If the measured value of the voltage detection module meets the requirements, control the first control switch to turn on, and connect the positive power contact and the negative power contact of the power input contact of the target power receiving device to the first connection contact and the second connection contact, respectively.

[0134] In some implementations, the voltage detection module can detect the voltage value of the connected components in real time, thereby obtaining the measured value of the voltage detection module. If the measured value of the voltage detection module does not meet the requirements, the output voltage of the DC power supply is adjusted until the measured value of the voltage detection module meets the requirements. At this time, the first control switch is turned on, and the positive and negative power input contacts of the target power receiving device are connected to the first and second connection contacts respectively, which is equivalent to applying a voltage that meets the requirements to the target power receiving device.

[0135] In addition, in some implementations, the power simulation device includes a third control switch and an equivalent load; step 602 can be implemented as follows: obtain the rated equivalent load value of the target powered device under the test target voltage, control the first control switch to open and control the third control switch to open, and adjust the equivalent load value of the equivalent load according to the rated equivalent load value of the target powered device until the equivalent load value of the equivalent load is equal to the rated equivalent load value of the target powered device; obtain the detection value of the voltage detection module and determine whether the detection value meets the requirements; if the detection value meets the requirements, control the first control switch to open and control the third control switch to open, and connect the positive power contact and the negative power contact of the power input contact of the target powered device to the first connection contact and the second connection contact respectively.

[0136] Once the first control switch is turned off and the third control switch is turned on, the equivalent load value of the equivalent load can be adjusted according to the rated equivalent load value of the target powered device under the target voltage. This makes the equivalent load value of the equivalent load close to the rated equivalent load value of the target powered device, effectively simulating the rated equivalent load value of the target powered device. Then, the detection value of the voltage detection module is obtained, and it is determined whether the detection value meets the requirements. If the detection value does not meet the requirements, the output voltage of the DC power supply is adjusted until the detection value meets the requirements. Afterward, the first control switch is turned on and the third control switch is turned off. The positive and negative power input contacts of the target powered device are connected to the first and second connection contacts, respectively. This is equivalent to applying the target voltage that meets the requirements to the target powered device, making the test of the target powered device more accurate and reliable.

[0137] In addition, such as Figure 13 As shown in the embodiments of this application, the power simulation device includes a third control switch and an equivalent load. When testing the target powered device, the following steps can be followed:

[0138] Step 701: Configure the parameter values ​​of each parameter in the parameter simulator to simulate the rated values ​​of each parameter of the target power supply.

[0139] Step 702: Obtain the rated equivalent load value of the target power receiving device under the test target voltage, control the first control switch to open and control the third control switch to open, and adjust the equivalent load value of the equivalent load according to the rated equivalent load value of the target power receiving device until the equivalent load value of the equivalent load is equal to the rated equivalent load value of the target power receiving device.

[0140] Step 703: Obtain the detection value from the voltage detection module and determine whether the detection by the voltage detection module meets the requirements;

[0141] Step 704: If the voltage detection module's detection value meets the requirements, then control the first control switch to turn on and control the third control switch to turn off, and connect the positive power contact and the negative power contact of the target power receiving device's power input contact to the first connection contact and the second connection contact, respectively.

[0142] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0143] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A power supply simulation apparatus characterized by comprising: The power supply simulation device comprises a power supply simulation module, a first control switch, a voltage detection module, a first connection contact and a second connection contact; a first end of the power supply simulation module is electrically connected with a first end of the first control switch, a second end of the first control switch is electrically connected with the first connection contact, the second connection contact is electrically connected with a second end of the power supply simulation module, and the first end of the power supply simulation module is electrically connected with the voltage detection module; wherein the first connection contact and the second connection contact are used for connecting a target powered device, the power supply simulation module comprises a connected direct current power supply and a parameter simulator, the parameter simulator is used for cooperating with the direct current power supply to simulate parameters of a target power supply, the parameters of the target power supply comprise at least one of equivalent internal resistance and equivalent capacitance, and a negative pole end of the direct current power supply is electrically connected with the second connection contact.

2. The power supply simulation apparatus according to claim 1, wherein The parameter simulator comprises an adjustable resistor; a first end of the adjustable resistor is electrically connected with the first end of the first control switch and the voltage detection module respectively, and a second end of the adjustable resistor is electrically connected with a positive pole end of the direct current power supply.

3. The power supply simulation apparatus according to claim 2, wherein The parameter simulator further comprises an adjustable capacitor; a first end of the adjustable capacitor is electrically connected with the first end of the adjustable resistor and the first end of the first control switch respectively, and a second end of the adjustable capacitor is electrically connected with the negative pole end of the direct current power supply and the second connection contact respectively.

4. The power supply simulation apparatus according to claim 2, wherein The power supply simulation device further comprises a second control switch and a first current detection module; a first end of the second control switch is electrically connected with the first end of the first control switch, a first end of the first current detection module is electrically connected with a second end of the second control switch and the second connection contact respectively, and a second end of the first current detection module is electrically connected with the negative pole end of the direct current power supply.

5. The power supply simulation apparatus according to claim 1, wherein The parameter simulator comprises an adjustable capacitor; a first end of the adjustable capacitor is electrically connected with the positive pole end of the direct current power supply and the first end of the first control switch respectively, and a second end of the adjustable capacitor is electrically connected with the negative pole end of the direct current power supply and the second connection contact respectively.

6. The power supply simulation apparatus according to claim 1, wherein The positive pole end of the direct current power supply is electrically connected with the voltage detection module.

7. The power supply simulation apparatus according to claim 1, wherein The power supply simulation device further comprises an equivalent load and a third control switch; a first end of the third control switch is electrically connected with the first end of the first control switch, a second end of the third control switch is electrically connected with a first end of the equivalent load, and a second end of the equivalent load is electrically connected with the negative pole end of the direct current power supply and the second connection contact; wherein a load value of the equivalent load is adjustable, and the equivalent load is used for simulating a rated value of an equivalent load parameter of the target powered device.

8. The power supply simulation apparatus according to claim 7, wherein The power supply simulation device further comprises a signal generation module; the first end of the first control switch and the first end of the third control switch are electrically connected with the first end of the power supply simulation module through a wire, the signal generation module is coupled with the wire, and the signal generation module is used for generating and sending a target signal so that the target signal is coupled to the wire.

9. The power supply simulation apparatus according to claim 8, wherein The signal generating module comprises a signal generating unit and a signal coupling unit; The signal generating unit is electrically connected with the signal coupling unit, and the signal coupling unit is coupled with the wire; The signal generating unit is configured to generate and emit a target signal, and the signal coupling unit is configured to couple the signal to the wire.

10. The power supply simulation apparatus according to claim 7, wherein The second end of the equivalent load is electrically connected with the voltage detection module.

11. The power supply simulation apparatus according to claim 8, wherein The first end of the first control switch is electrically connected with the voltage detection module.

12. The power supply simulation apparatus according to any one of claims 7 to 11, characterized by, The power supply simulation device further comprises a second current detection module; The first end of the second current detection module is electrically connected with the second end of the equivalent load, and the second end of the second current detection module is electrically connected with the negative terminal of the direct current power supply.

13. The power supply simulation apparatus according to any one of claims 7 to 11, characterized by, The power supply simulation device further comprises a third current detection module; The first end of the third current detection module is electrically connected with the second end of the equivalent load and the second connection contact respectively, and the second end of the third current detection module is electrically connected with the negative terminal of the direct current power supply.

14. The power supply simulation apparatus according to any one of claims 7 to 11, wherein The power supply simulation device further comprises a controller; The direct current power supply, the parameter simulator, the voltage detection module, the first control switch, the third control switch, and the equivalent load are all electrically connected with the controller, the controller is configured to control the configuration of the direct current power supply and the parameter simulator to simulate the parameters and parameter values of the target power supply, and to control the first control switch and the third control switch to be turned on or turned off, and to adjust the load parameter values of the equivalent load, and to obtain the measurement values of the voltage detection module.

15. The power supply simulation apparatus according to claim 14, wherein The power supply simulation device further comprises a display module; The display module is electrically connected with the controller, and the display module is configured to display the information transmitted by the controller.

16. The power supply simulation apparatus of claim 14, wherein The power supply simulation device further comprises an input module; The input module is electrically connected with the controller, and the input module is configured to transmit instructions and / or parameter values to the controller.

17. The power supply simulation apparatus of claim 14, wherein The power supply simulation device further comprises a communication module; The communication module is electrically connected with the controller, and the communication module is configured to be communicatively connected with an upper computer, so that the upper computer transmits instructions and / or parameter values to the controller through the communication module.

18. The power supply simulation apparatus according to any one of claims 7-11, wherein, The power supply simulation device has a first mode and a second mode; When the power supply simulation device is in the first mode, the first control switch is turned on, and the third control switch is turned off; When the power supply simulation device is in the second mode, the first control switch is turned off, and the third control switch is turned on.

19. The power supply simulation apparatus according to any one of claims 7-11, wherein, The first control switch and the third control switch are at least one of a MOS tube and a relay switch.

20. A detection system characterized by, The detection system comprises at least one power supply simulation device according to any one of claims 1-19.

21. The detection system of claim 20, wherein, The detection system further comprises a control assembly, an excitation generating assembly, a measurement clamp assembly, a fluid supply assembly, and a measurement assembly; The fluid supply assembly is connected with the measurement clamp assembly, the measurement clamp assembly comprises one or more series table modules, the series table modules are used for series connection and clamping of fixed fluid flow meters, the fluid supply assembly is used for supplying fluid to the fluid flow meters, and the measurement assembly is used for receiving and measuring fluid flowing out of the fluid flow meters, so as to measure and compare the fluid flow meters. The excitation generation assembly is connected with the control assembly, and the excitation generation assembly is used for outputting excitation signals to the fluid flow meters. The power supply simulation device is electrically connected with the fluid flow meters clamped by the series table modules.

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