Temperature sensor for measuring temperature

Abstract

The utility model provides a temperature measurement temperature sensor, and belongs to the technical field of temperature measurement. The temperature measurement temperature sensor comprises a power supply module, a temperature detection module, a resistance detection module, a central processing module, a current control module and a heat pump module, the first end of the temperature detection module is connected with the power module, the second end is connected with the input end of the resistance detection module, and the output end of the resistance detection module is connected with the central processing module; the central processing module is connected with the control end of the current control module; the first output end of the current control module is connected with the first end of the heat pump module, and the second output end of the current control module is connected with the second end of the heat pump module. The problem that the reliability of a measurement result is affected by the self-heating effect of a traditional temperature measurement temperature sensor can be solved.

Description

Technical Field

[0001] The present disclosure relates to the field of temperature measurement technology, and in particular to a temperature measurement sensor. Background Art

[0002] A temperature sensor is a detection device used to measure the temperature of an object or environment. Temperature sensors are widely used, for example, in process control and temperature monitoring in chemical, metallurgical or mechanical industries to ensure the stability of the process and the controllability of product quality; in the power industry, transformer temperature is measured to warn of faults; in the automotive electronics field, engine temperature is monitored to optimize engine performance; in environmental monitoring, it is used to monitor air temperature and surface temperature to provide data support for weather forecasting and environmental protection. However, current temperature sensors generally have the phenomenon of self-heating effect, which affects the reliability of the measurement results. Utility Model Content

[0003] The embodiment of the present disclosure provides a temperature measuring sensor to solve the problem that the reliability of the measurement result of the traditional temperature measuring temperature sensor is affected by the self-heating effect.

[0004] The present disclosure provides a temperature sensor, comprising:

[0005] Power module, temperature detection module, resistance detection module, central processing module, current control module and heat pump module;

[0006] The first end of the temperature detection module is used to connect to the power module, the second end is connected to the input end of the resistance detection module, and the output end of the resistance detection module is connected to the central processing module;

[0007] The central processing module is connected to the control end of the current control module;

[0008] The first output end of the current control module is connected to the first end of the heat pump module, and the second output end of the current control module is connected to the second end of the heat pump module.

[0009] In an exemplary embodiment of the present disclosure, a temperature measuring temperature sensor further includes a fault detection module;

[0010] The fault detection module is connected to the temperature detection module.

[0011] In an exemplary embodiment of the present disclosure, a temperature measuring temperature sensor further includes an alarm module and a communication module;

[0012] The alarm module is connected to the central processing module;

[0013] The central processing module is connected to the terminal for communication via the communication module.

[0014] In an exemplary embodiment of the present disclosure, the resistance detection module includes a resistor R6, a resistor R5, a resistor R4, a resistor R3, an amplifier U1, and a resistor R7;

[0015] The first end of the resistor R6 is connected to the second end of the temperature detection module, the second end of the resistor R6 is grounded, the first end of the resistor R4 is connected to the first end of the resistor R6, and the second end of the resistor R4 is connected to the inverting input end of the amplifier U1;

[0016] The non-inverting input terminal of the amplifier U1 is connected to the Vref reference voltage through the resistor R5, and the non-inverting input terminal of the amplifier U1 is grounded through the resistor R3;

[0017] The output end of the amplifier U1 is connected to the inverting input end of the amplifier U1 through the resistor R7, and the output end of the amplifier U1 is connected to the central processing module.

[0018] In an exemplary embodiment of the present disclosure, the resistance detection module further includes a resistor R8 and a capacitor C4;

[0019] The first end of the resistor R8 is connected to the output end of the amplifier U1 , the second end of the resistor R8 is grounded via the capacitor C4 , and the second end of the resistor R8 is connected to the central processing module.

[0020] In an exemplary embodiment of the present disclosure, the current control module includes a relay K1, a switch tube Q1, a resistor R1, a resistor R2 and a transistor Q3;

[0021] The base of the transistor Q3 is connected to the central processing module, the collector of the transistor Q3 is connected to the VCC power supply, the emitter of the transistor Q3 is connected to the first input end of the relay K1, the second input end of the relay K1 is connected to the first end of the switch tube Q1, the control end of the switch tube Q1 is connected to the central processing module through the resistor R2, and the second end of the switch tube Q1 is grounded;

[0022] The first common end of the relay K1 is connected to the emitter of the transistor Q3, the first normally open end of the relay K1 is used to connect to the first end of the heat pump module, and the first normally closed end of the relay K1 is used to connect to the second end of the heat pump module;

[0023] The second common end of the relay K1 is grounded through the resistor R1, the second normally open end of the relay K1 is used to connect the second end of the heat pump module, and the second normally closed end of the relay K1 is used to connect the first end of the heat pump module.

[0024] In an exemplary embodiment of the present disclosure, the current control module further includes a capacitor C1;

[0025] The capacitor C1 is connected in parallel with the resistor R2.

[0026] The beneficial effect of a temperature sensor for measuring temperature provided by the embodiment of the present disclosure is as follows: the embodiment of the present disclosure integrates a power module, a temperature detection module, a resistance detection module, a central processing module, a current control module and a heat pump module. Through the coordinated work of the temperature detection module and the resistance detection module, the temperature information is accurately converted into a processable electrical signal for processing by the central processing module. Then, the central processing module is combined with the current control module, and the working state of the heat pump module can be quickly adjusted according to the real-time temperature data, so as to realize the precise control of the temperature of the temperature detection module, solve the influence brought by the self-heating effect phenomenon, and thus ensure the reliability of the temperature measurement result. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 It is a structural schematic diagram of a temperature measuring temperature sensor provided by an embodiment of the present disclosure;

[0029] Figure 2 is a structural schematic diagram of another temperature measuring temperature sensor provided by an embodiment of the present disclosure;

[0030] Figure 3 is a circuit diagram of a resistance detection module provided in an embodiment of the present disclosure;

[0031] Figure 4 is a circuit diagram of a current control module provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] In order to enable people in the technical field to better understand the present solution, the technical solution in the embodiment of the present solution will be clearly described below in conjunction with the drawings in the embodiment of the present solution. Obviously, the described embodiment is an embodiment of a part of the present solution, not all of the embodiments. Based on the embodiments in the present solution, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present solution.

[0033] The term "including" and any other variations in the specification and claims of this solution and the above drawings mean "including but not limited to", and is intended to cover non-exclusive inclusions and is not limited to the examples listed in the text. In addition, the terms "first" and "second" are used to distinguish different objects, not to describe a specific order.

[0034] The following is a detailed description of the implementation of the present disclosure in conjunction with the specific drawings:

[0035] Figure 1 This is a schematic diagram of the structure of a temperature sensor provided by an embodiment of the present disclosure. Figure 1 The temperature measuring temperature sensor includes a power supply module 101, a temperature detection module 102, a resistance detection module 103, a central processing module 104, a current control module 105 and a heat pump module 106;

[0036] The first end of the temperature detection module 102 is used to connect to the power module 101, and the second end is connected to the input end of the resistance detection module 103, and the output end of the resistance detection module 103 is connected to the central processing module 104;

[0037] The central processing module 104 is connected to the control end of the current control module 105;

[0038] A first output end of the current control module 105 is connected to a first end of the heat pump module 106 , and a second output end of the current control module 105 is connected to a second end of the heat pump module 106 .

[0039] In this embodiment, the first end of the temperature detection module 102 is used to connect with the power module 101, the second end is connected with the input end of the resistance detection module 103, and the output end of the resistance detection module 103 is connected with the central processing module 104. The power module 101 provides a stable power supply for the entire temperature sensor to ensure that each module can work normally. The temperature detection module 102 is used to sense the temperature change of the environment or object and obtain temperature information. The first end of the temperature detection module 102 can obtain electric energy by connecting to the power module 101. Since the internal resistance value in the temperature detection module 102 can reflect the change of temperature, the second end of the temperature detection module 102 is connected with the input end of the resistance detection module 103, and the internal resistance value information in the temperature detection module 102 can be transmitted to the resistance detection module 103, and the resistance signal can be converted into a voltage signal through the resistance detection module 103, so the voltage signal will also reflect the change of temperature. The output end of the resistance detection module 103 is connected to the central processing module 104, and the central processing module 104 is responsible for receiving the voltage signal output by the resistance detection module 103, and making corresponding control decisions according to the change of the voltage signal.

[0040] In this embodiment, the central processing module 104 is connected to the control end of the current control module 105. The current control module 105 is used to adjust the current and control the intensity and direction of the current. The central processing module 104 is connected to the control end of the current control module 105, and the current control module 105 can make corresponding adjustments by receiving instructions from the central processing module 104.

[0041] In this embodiment, the first output end of the current control module 105 is connected to the first end of the heat pump module 106, and the second output end of the current control module 105 is connected to the second end of the heat pump module 106. The heat pump module 106 can use the thermoelectric effect of semiconductor materials for cooling or heating. The heat pump module 106 can obtain different current flows by connecting to the first output end and the second output end of the current control module 105, and adjust the temperature according to the control current.

[0042] This embodiment achieves precise control of the temperature of the temperature detection module 102 by integrating the power module 101, the temperature detection module 102, the resistance detection module 103, the central processing module 104, the current control module 105 and the heat pump module 106, solves the influence of the self-heating effect phenomenon, and thus ensures the reliability of the temperature measurement result. Among them, the current control module 105 has two output ends, which are respectively connected to the two ports of the heat pump module 106. This design allows the central processing module 104 to apply different currents to the heat pump module 106 through the current control module 105, thereby achieving precise adjustment of the temperature.

[0043] like Figure 2 As shown, in one embodiment of the present disclosure, a temperature measuring temperature sensor further includes a fault detection module 107;

[0044] The fault detection module 107 is connected to the temperature detection module 102 .

[0045] In this embodiment, the fault detection module 107 detects the state of the temperature detection module 102 and the abnormal conditions in the signal transmission path to timely discover and report potential faults.

[0046] Exemplarily, the fault detection module 107 can detect the physical state of the temperature detection module 102, including whether it is damaged, whether the connection is good, etc. This is usually achieved by detecting the resistance value, voltage output or current change of the temperature detection module 102. If the temperature detection module 102 is damaged or poorly connected, the fault detection module 107 will immediately issue an alarm and trigger a corresponding protection mechanism, such as cutting off the power supply or starting a backup sensor.

[0047] Exemplarily, the fault detection module 107 can also continuously detect the temperature data signal stream output by the temperature detection module 102. Through real-time analysis of the data, such as checking the continuity of the data, whether it exceeds the preset normal working range, and the trend of data changes, it is possible to identify whether there is an abnormality. If the temperature signal exceeds the normal temperature fluctuation range, or remains unchanged for a long time, it is preliminarily determined that there may be a fault. If the signal fluctuates frequently or the noise is too large, it may indicate that the performance of the internal components of the temperature detection module 102 is unstable or damaged.

[0048] This embodiment introduces the fault detection module 107 to detect and analyze abnormalities of the temperature detection module 102 according to the value and stability of the temperature signal output by the temperature detection module 102, thereby ensuring stable operation and reliable temperature measurement of the temperature sensor.

[0049] like Figure 2 As shown, in one embodiment of the present disclosure, a temperature measuring temperature sensor further includes an alarm module 108 and a communication module 109;

[0050] The alarm module 108 is connected to the central processing module 104;

[0051] The central processing module 104 is connected to the terminal 110 via the communication module 109 .

[0052] In this embodiment, the alarm module 108 also includes a touch screen and a buzzer. The alarm module 108 can play a role in warning of abnormal conditions. The alarm module 108 is connected to the central processing module 104, so that the central processing module 104 can perform further processing and analysis after receiving the temperature signal from the resistance detection module 103. When abnormal temperature or other faults are detected, the central processing module 104 will activate the alarm module 108, the buzzer will sound an alarm, remind the user or operator to pay attention, and the problem information can be displayed on the touch screen.

[0053] Exemplarily, the touch display screen can display the current alarm information, which can include real-time warning and fault information, such as occurrence time, fault location or fault type, which can be viewed by clicking the "previous / next" button and can be cleared by clicking the "reset" button.

[0054] Exemplarily, the touch display screen can be used to select "mute", and after the buzzer sounds, it can be silenced by clicking the "mute" button.

[0055] In this embodiment, the communication module 109 is responsible for transmitting the temperature data collected by the central processing module 104 to the terminal 110 , and can also receive instructions or configuration information from the terminal 110 .

[0056] In this embodiment, the alarm module 108 helps the relevant staff to respond to the temperature anomaly in the first time to avoid further deterioration of the problem, thereby improving the reliability and stability of the entire sensor. The existence of the alarm module 108 improves the safety of the temperature sensor. The communication module 109 supports the remote sending of real-time temperature data, alarm information or other important data to the terminal 110, so that the user can grasp the temperature situation anytime and anywhere, and perform remote monitoring and management. At the same time, the communication module 109 also supports receiving instructions or configuration information from the terminal 110 to realize remote configuration and control of the system. This design greatly improves the accuracy and timeliness of temperature detection, and also enhances the intelligence and remote management capabilities.

[0057] like Figure 3 As shown, in one embodiment of the present disclosure, the resistance detection module 103 includes a resistor R6, a resistor R5, a resistor R4, a resistor R3, an amplifier U1, and a resistor R7;

[0058] A first end of the resistor R6 is connected to a second end of the temperature detection module 102, a second end of the resistor R6 is grounded, a first end of the resistor R4 is connected to a first end of the resistor R6, and a second end of the resistor R4 is connected to an inverting input end of the amplifier U1;

[0059] The non-inverting input terminal of the amplifier U1 is connected to the Vref reference voltage through the resistor R5, and the non-inverting input terminal of the amplifier U1 is grounded through the resistor R3;

[0060] The output end of the amplifier U1 is connected to the inverting input end of the amplifier U1 through the resistor R7 , and the output end of the amplifier U1 is connected to the central processing module 104 .

[0061] In this embodiment, the temperature detection module 102 further includes a temperature detector H1.

[0062] In the present embodiment, resistor R6 is connected with temperature detection module 102, and a first end receives a signal from temperature detection module 102, and a second end is grounded, forming a voltage divider circuit. Resistor R4 obtains a voltage signal from the connection point of resistor R6, and transmits it to the inverting input of amplifier U1. The in-phase input of amplifier U1 is connected to Vref reference voltage through resistor R5, and is grounded through resistor R3 at the same time, and these two resistors are used to set the in-phase input voltage of amplifier. The output of amplifier U1 is connected to the inverting input through resistor R7, forms negative feedback, and realizes the gain and performance of stable amplifier. After amplifier U1 amplifies and processes the input signal, its output is connected to central processing module 104, and the resistance-related signal after processing is transmitted to central processing module 104 for further analysis and calculation.

[0063] In this embodiment, the resistance detection module 103 converts and amplifies the resistance-related signal output by the temperature detection module 102 through a series of resistor voltage division and amplifier processing, so that the central processing module 104 can accurately obtain and process this information.

[0064] like Figure 3 As shown, in one embodiment of the present disclosure, the resistance detection module 103 further includes a resistor R8 and a capacitor C4;

[0065] A first end of the resistor R8 is connected to the output end of the amplifier U1 , a second end of the resistor R8 is grounded via the capacitor C4 , and a second end of the resistor R8 is connected to the central processing module 104 .

[0066] In the present embodiment, the resistor R8 is mainly used for current limiting and voltage division, limiting the current flowing from the output end of the amplifier U1 to the subsequent circuit, and sharing a part of the voltage to protect the subsequent circuit components. The capacitor C4 and the resistor R8 form a low-pass filter circuit. The capacitor C4 can filter out the high-frequency noise and interference in the output signal of the amplifier U1, so that the signal transmitted to the central processing module 104 is more stable and accurate. The second end of the resistor R8 is connected to the central processing module 104, and the signal after filtering and current limiting processing is transmitted to the central processing module 104 for subsequent processing and analysis.

[0067] In this embodiment, the resistor R8 and the capacitor C4 form a filter circuit, which helps to filter out interference and improve the quality and stability of the output signal of the resistance detection module 103, thereby improving the performance and reliability of the entire temperature measurement temperature sensor system.

[0068] like Figure 4 As shown, in one embodiment of the present disclosure, the current control module 105 includes a relay K1, a switch tube Q1, a resistor R1, a resistor R2 and a transistor Q3;

[0069] The base of the transistor Q3 is connected to the central processing module 104, the collector of the transistor Q3 is connected to the VCC power supply, the emitter of the transistor Q3 is connected to the first input end of the relay K1, the second input end of the relay K1 is connected to the first end of the switch tube Q1, the control end of the switch tube Q1 is connected to the central processing module 104 through the resistor R2, and the second end of the switch tube Q1 is grounded;

[0070] The first common terminal of the relay K1 is connected to the emitter of the transistor Q3, the first normally open terminal of the relay K1 is used to connect to the first terminal of the heat pump module 106, and the first normally closed terminal of the relay K1 is used to connect to the second terminal of the heat pump module 106;

[0071] The second common terminal of the relay K1 is grounded through the resistor R1 , the second normally open terminal of the relay K1 is used to connect to the second terminal of the heat pump module 106 , and the second normally closed terminal of the relay K1 is used to connect to the first terminal of the heat pump module 106 .

[0072] In this embodiment, the heat pump module 106 further includes a semiconductor heat pump P1 .

[0073] In this embodiment, transistor Q3 is used as a current amplifying element. The base of transistor Q3 is connected to the central processing module 104, and the signal output by the central processing module 104 controls the conduction or cutoff of transistor Q3. When transistor Q3 is turned on, the VCC power supply can flow to relay K1 through the connected collector of transistor Q3, so that relay K1 works. The emitter of transistor Q3 is connected to the first input terminal of relay K1 to control the working state of relay K1.

[0074] In this embodiment, the switch tube Q1 is used as a power switch element. The control end of the switch tube Q1 is connected to the central processing module 104 through the resistor R2, and is also controlled by the central processing module 104 to control the conduction or cutoff of the switch tube Q1, thereby controlling the current flowing to the heat pump module 106. The first end of the switch tube Q1 is grounded, and the second end is connected to the heat pump module 106 through the relay K1. When the central processing module 104 gives a corresponding signal, the transistor Q3 and the switch tube Q1 work together to control the contact switching of the relay K1.

[0075] In this embodiment, the relay K1 has two independent switching paths. The first path is that the first common terminal, the first normally open terminal, and the second normally closed terminal of the relay K1 control the second terminal of the heat pump module 106; the second path is that the second common terminal, the second normally open terminal, and the first normally closed terminal of the relay K1 control the first terminal of the heat pump module 106. By switching the contacts of the relay K1, the flow direction of the current in the heat pump module 106 can be changed, thereby realizing the control of the working state of the heat pump module 106.

[0076] Exemplarily, when the heat pump module 106 needs to heat up, the transistor Q3 receives a high-frequency signal, and the switch tube Q1 receives a low-frequency signal, and the switch tube Q1 is in a cut-off state. At this time, the first common end of the relay K1 is connected to the first normally open end and connected to the second end of the heat pump module 106; the second common end of the relay K1 is connected to the second normally open end and connected to the first end of the heat pump module 106, thereby forming a current direction from the second end of the heat pump module 106 to the first end of the heat pump module 106.

[0077] Exemplarily, when the heat pump module 106 needs to cool, the transistor Q3 receives a high-frequency signal, and the switch tube Q1 receives a high-frequency signal, and the switch tube Q1 is in a conducting state. At this time, the first common end of the relay K1 is connected to the first normally closed end and connected to the first end of the heat pump module 106; the second common end of the relay K1 is connected to the second normally closed end and connected to the second end of the heat pump module 106, thereby forming a current direction from the first end of the heat pump module 106 to the second end of the heat pump module 106.

[0078] In this embodiment, through the dual control of the transistor Q3, the switch tube Q1 and the relay K1, precise control of the heating or cooling working state of the heat pump module 106 is achieved. At the same time, the necessary protection functions are provided by the resistors R1 and R2 to ensure the stable and safe operation of the temperature sensor. Similarly, precise control of the stability of the temperature detection module 102 is also achieved.

[0079] like Figure 4 As shown, in one embodiment of the present disclosure, the current control module 105 further includes a capacitor C1;

[0080] The capacitor C1 is connected in parallel with the resistor R2.

[0081] In this embodiment, the resistor R2 plays a role of current limiting to ensure the stability of the circuit. The capacitor C1 is used to control the speed of the switch tube Q1 being turned on or off to play an acceleration role.

[0082] In this embodiment, the capacitor C1 plays a filtering role, and can filter out the high-frequency noise and interference in the signal output by the central processing module 104 to the control end of the switch tube Q1, so that the control signal is more stable and smooth. This helps to reduce the malfunction of the switch tube Q1 and improve the accuracy and stability of the current control. At the same time, the capacitor C1 and the resistor R2 are connected in parallel to improve the dynamic response characteristics of the circuit to a certain extent, making the conduction and cutoff of the switch tube Q1 more rapid and reliable, thereby improving the performance of the entire current control module 105.

[0083] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A temperature sensor for measuring temperature, characterized in that: It includes a power supply module, a temperature detection module, a resistance detection module, a central processing module, a current control module and a heat pump module; The first end of the temperature detection module is used to connect to the power module, the second end is connected to the input end of the resistance detection module, and the output end of the resistance detection module is connected to the central processing module; The central processing module is connected to the control end of the current control module; The first output end of the current control module is connected to the first end of the heat pump module, and the second output end of the current control module is connected to the second end of the heat pump module.

2. A temperature sensor for measuring temperature as claimed in claim 1, characterized in that: Also included is a fault detection module; The fault detection module is connected to the temperature detection module.

3. A temperature sensor for measuring temperature as claimed in claim 1, characterized in that: Also includes an alarm module and a communication module; The alarm module is connected to the central processing module; The central processing module is connected to the terminal for communication via the communication module.

4. A temperature sensor for measuring temperature as claimed in claim 1, characterized in that: The resistance detection module includes a resistor R6, a resistor R5, a resistor R4, a resistor R3, an amplifier U1 and a resistor R7; The first end of the resistor R6 is connected to the second end of the temperature detection module, the second end of the resistor R6 is grounded, the first end of the resistor R4 is connected to the first end of the resistor R6, and the second end of the resistor R4 is connected to the inverting input end of the amplifier U1; The non-inverting input terminal of the amplifier U1 is connected to the Vref reference voltage through the resistor R5, and the non-inverting input terminal of the amplifier U1 is grounded through the resistor R3; The output end of the amplifier U1 is connected to the inverting input end of the amplifier U1 through the resistor R7, and the output end of the amplifier U1 is connected to the central processing module.

5. A temperature sensor for measuring temperature as claimed in claim 4, characterized in that: The resistance detection module also includes a resistor R8 and a capacitor C4; The first end of the resistor R8 is connected to the output end of the amplifier U1 , the second end of the resistor R8 is grounded via the capacitor C4 , and the second end of the resistor R8 is connected to the central processing module.

6. A temperature sensor for measuring temperature as claimed in claim 1, characterized in that: The current control module includes a relay K1, a switch tube Q1, a resistor R1, a resistor R2 and a transistor Q3; The base of the transistor Q3 is connected to the central processing module, the collector of the transistor Q3 is connected to the VCC power supply, the emitter of the transistor Q3 is connected to the first input end of the relay K1, the second input end of the relay K1 is connected to the first end of the switch tube Q1, the control end of the switch tube Q1 is connected to the central processing module through the resistor R2, and the second end of the switch tube Q1 is grounded; The first common end of the relay K1 is connected to the emitter of the transistor Q3, the first normally open end of the relay K1 is used to connect to the first end of the heat pump module, and the first normally closed end of the relay K1 is used to connect to the second end of the heat pump module; The second common end of the relay K1 is grounded through the resistor R1, the second normally open end of the relay K1 is used to connect the second end of the heat pump module, and the second normally closed end of the relay K1 is used to connect the first end of the heat pump module.

7. A temperature sensor for measuring temperature as claimed in claim 6, characterized in that: The current control module also includes a capacitor C1; The capacitor C1 is connected in parallel with the resistor R2.

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