A protection device for switching power supply test equipment

Abstract

The utility model discloses a protective device belongs to switching power supply test equipment technical field, specifically related to a kind of protective device for switching power supply test equipment, comprising: processor, signal acquisition module, alarm module, display module and memory;The output of signal acquisition module is connected with processor, and alarm module, display module and memory are connected with processor respectively;Signal acquisition module is composed of temperature sensor and amplifier circuit;Processor is composed of single-chip microcontroller;Alarm module is composed of player;Display module is composed of several indicator light groups;The utility model is to the temperature monitoring and protection of switching power supply test equipment, and with LED display, when temperature exceeds specified value, alarm voice signal is generated, and staff is reminded to stop cooling, to improve switching power supply test equipment security, while protective device can prevent the measurement circuit of test equipment itself precision decline, to ensure the stability and accuracy of switching power supply test equipment.

Description

Technical Field

[0001] This utility model discloses a protective device, belonging to the technical field of switching power supply testing equipment, specifically relating to a protective device for switching power supply testing equipment. Background Technology

[0002] Industrial switching power supplies provide a stable and reliable power supply for key equipment such as automated equipment, PLC controllers, and robotic arms. Their main functions include providing a stable and reliable power supply, adapting to harsh environments, improving system reliability and efficiency, and supporting various protection functions.

[0003] The purpose of industrial switching power supply testing equipment is to ensure the performance and quality of power supply products and meet the needs of various application scenarios. Through a series of precise testing procedures, industrial switching power supply testing equipment can comprehensively test various parameters of the power supply, including input characteristics, output characteristics, stability, protection functions, timing, safety regulations, and reliability, ensuring the stability and reliability of the power supply in practical applications.

[0004] Traditional industrial switching power supply testing equipment tests one or more switching power supplies for extended periods during operation. However, under prolonged high load conditions, the internal temperature of the testing equipment increases. When the temperature is too high, the detection signal becomes unstable. Furthermore, excessively high temperatures accelerate the aging of components, causing key parameters such as resistance, capacitance, on-state voltage drop / threshold voltage of semiconductor devices, and reference voltage source to drift with temperature changes, resulting in a decrease in the accuracy of the testing equipment's measurement circuitry. Utility Model Content

[0005] Purpose of the utility model: To provide a protective device for switching power supply testing equipment, and to solve the problems mentioned above.

[0006] Technical solution: A protective device for switching power supply testing equipment, the protective device comprising: a processor, a signal acquisition module, an alarm module, a display module, and a memory;

[0007] The output terminal of the signal acquisition module is connected to the processor, and the alarm module, the display module and the memory are respectively connected to the processor;

[0008] The signal acquisition module consists of a temperature sensor and an amplifier circuit.

[0009] The processor is composed of a microcontroller;

[0010] The alarm module consists of a player;

[0011] The display module consists of several indicator light groups.

[0012] In a further embodiment, the signal acquisition module includes: a temperature sensor J1, a resistor R1, a capacitor C1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a capacitor C1, a transistor VT1, a transistor VT2, a diode D1, a diode D2, an amplifier AR1, and a resistor R7.

[0013] The temperature sensor J1 has a 5V input at pin 1, and pin 2 connected to one end of resistor R1. The other end of resistor R1 is connected to one end of capacitor C1, one end of resistor R2, and the base of transistor VT1. The other end of capacitor C1 is connected to ground at pin 3 of the temperature sensor J1. The emitter of transistor VT1 is connected to the base of transistor VT2, and the emitter of transistor VT2 is grounded. The collector of transistor VT1 is connected to the collector of transistor VT2, one end of resistor R3, and one end of capacitor C2. The other end of resistor R2 is connected to the other end of resistor R3. The amplifier AR1 receives a 5V input voltage. The other end of capacitor C2 is connected to the anode of diode D1, the cathode of diode D2, and one end of resistor R4. The cathode of diode D1 receives a 5V input voltage, and the anode of diode D2 is grounded. The non-inverting input of amplifier AR1 is connected to the other end of resistor R4 and one end of resistor R5. The other end of resistor R5 receives a 5V input voltage. The inverting input of amplifier AR1 is connected to one end of resistor R7 and one end of resistor R6. The other end of resistor R7 is grounded. The output of amplifier AR1 is connected to the other end of resistor R6 and outputs a signal to the processor.

[0014] In a further embodiment, the output of the signal acquisition module is connected to the P3.4 pin of the microcontroller. A temperature sensor is installed on the switching power supply test equipment. The temperature sensor acquires the signal, which is amplified by the amplification circuit and finally outputs a usable counting pulse. These pulses are received at the input of the microcontroller, the time interval between adjacent pulses is counted, the temperature value is calculated, and displayed on the display module.

[0015] In a further embodiment, the memory is used to store temperature data collected at each time interval.

[0016] In a further embodiment, the alarm module includes: a player LS1, a transistor Q1, and a resistor R25;

[0017] The player LS1 has a pin with an input voltage of 3.3V / 5V. One end of the resistor R25 is connected to the microcontroller, and the other end is connected to the base of the transistor Q1. The emitter of the transistor Q1 is grounded, and the collector is connected to another pin of the player LS1.

[0018] In a further embodiment, the indicator lights of the display module are mounted on a switching power supply testing device.

[0019] Beneficial effects: This utility model can realize temperature monitoring and protection of switching power supply testing equipment, and use LED display. When the temperature exceeds the specified value, an alarm voice signal is generated to remind the staff to stop the machine and cool it down, thereby improving the safety of switching power supply testing equipment. At the same time, the protective device can prevent the accuracy of the measurement circuit of the testing equipment from decreasing, thereby ensuring the stability and accuracy of the switching power supply testing equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention.

[0021] Figure 2 This is a schematic diagram of the signal acquisition module of this utility model.

[0022] Figure 3 This is a schematic diagram of the alarm module of this utility model. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] A protective device for a switching power supply testing equipment includes: a processor, a signal acquisition module, an alarm module, a display module, and a memory;

[0027] In one embodiment, such as Figure 1 As shown, the output terminal of the signal acquisition module is connected to the processor, and the alarm module, the display module, and the memory are respectively connected to the processor;

[0028] The signal acquisition module consists of a temperature sensor and an amplifier circuit.

[0029] The processor is composed of a microcontroller;

[0030] The alarm module consists of a player;

[0031] The display module consists of several indicator light groups.

[0032] In one embodiment, such as Figure 2 As shown, the signal acquisition module includes: temperature sensor J1, resistor R1, capacitor C1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, capacitor C1, transistor VT1, transistor VT2, diode D1, diode D2, amplifier AR1, and resistor R7.

[0033] The temperature sensor J1 has a 5V input at pin 1, and pin 2 connected to one end of resistor R1. The other end of resistor R1 is connected to one end of capacitor C1, one end of resistor R2, and the base of transistor VT1. The other end of capacitor C1 is connected to ground at pin 3 of the temperature sensor J1. The emitter of transistor VT1 is connected to the base of transistor VT2, and the emitter of transistor VT2 is grounded. The collector of transistor VT1 is connected to the collector of transistor VT2, one end of resistor R3, and one end of capacitor C2. The other end of resistor R2 is connected to the other end of resistor R3. The amplifier AR1 receives a 5V input voltage. The other end of capacitor C2 is connected to the anode of diode D1, the cathode of diode D2, and one end of resistor R4. The cathode of diode D1 receives a 5V input voltage, and the anode of diode D2 is grounded. The non-inverting input of amplifier AR1 is connected to the other end of resistor R4 and one end of resistor R5. The other end of resistor R5 receives a 5V input voltage. The inverting input of amplifier AR1 is connected to one end of resistor R7 and one end of resistor R6. The other end of resistor R7 is grounded. The output of amplifier AR1 is connected to the other end of resistor R6 and outputs a signal to the processor.

[0034] In one embodiment, such as Figure 2 As shown, the output of the signal acquisition module is connected to the P3.4 pin of the microcontroller. A temperature sensor is installed on the switching power supply test equipment. The temperature sensor acquires the signal, which is amplified by the amplification circuit and finally outputs a usable counting pulse. The microcontroller receives these pulses at its input, counts the time interval between adjacent pulses, calculates the temperature value, and displays it on the display module.

[0035] In one embodiment, the memory is used to store temperature data collected at each time interval.

[0036] In one embodiment, such as Figure 3 As shown, the alarm module includes: a player LS1, a transistor Q1, and a resistor R25;

[0037] The player LS1 has a pin with an input voltage of 3.3V / 5V. One end of the resistor R25 is connected to the microcontroller, and the other end is connected to the base of the transistor Q1. The emitter of the transistor Q1 is grounded, and the collector is connected to another pin of the player LS1.

[0038] In one embodiment, the indicator lights of the display module are mounted on a switching power supply testing device.

[0039] Working Principle: When this invention is in operation, it detects the temperature of the switching power supply test equipment and converts it into an electrical signal output proportional to the sampling current. After RC filtering, the signal is amplified by transistors VT1 and VT2, and clamped by a clamping circuit composed of diodes D1 and D2. Finally, the operational amplifier AR1 processes the signal to obtain the input value of the A / D sample. The power supply terminal of temperature sensor J1 is connected to a +5V power supply, and the ground terminal of temperature sensor J1 is grounded. The output signal of temperature sensor J1 is filtered by RC filtering formed by resistor R1 and capacitor C1 and then flows into composite transistors VT1 and VT2 to amplify the signal. The clamping circuit composed of diodes D1 and D2 clamps the signal output. Finally, the operational amplifier AR1 processes the signal to obtain the output voltage as the input value of the A / D sample. The microcontroller performs calculations. When the temperature is too high, the player LS1 in the alarm component issues an alarm to remind personnel, and the display module also lights up.

[0040] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A protective device for a switching power supply testing equipment, characterized in that, The protective device includes: a processor, a signal acquisition module, an alarm module, a display module, and a memory; The output terminal of the signal acquisition module is connected to the processor, and the alarm module, the display module and the memory are respectively connected to the processor; The signal acquisition module consists of a temperature sensor and an amplifier circuit. The processor is composed of a microcontroller; The alarm module consists of a player; The display module consists of several indicator light groups.

2. The protective device for a switching power supply testing equipment according to claim 1, characterized in that, The signal acquisition module includes: temperature sensor J1, resistor R1, capacitor C1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, capacitor C1, transistor VT1, transistor VT2, diode D1, diode D2, amplifier AR1, and resistor R7. The temperature sensor J1 has a 5V input at pin 1, and pin 2 connected to one end of resistor R1. The other end of resistor R1 is connected to one end of capacitor C1, one end of resistor R2, and the base of transistor VT1. The other end of capacitor C1 is connected to ground at pin 3 of the temperature sensor J1. The emitter of transistor VT1 is connected to the base of transistor VT2, and the emitter of transistor VT2 is grounded. The collector of transistor VT1 is connected to the collector of transistor VT2, one end of resistor R3, and one end of capacitor C2. The other end of resistor R2 is connected to the other end of resistor R3. The amplifier AR1 receives a 5V input voltage. The other end of capacitor C2 is connected to the anode of diode D1, the cathode of diode D2, and one end of resistor R4. The cathode of diode D1 receives a 5V input voltage, and the anode of diode D2 is grounded. The non-inverting input of amplifier AR1 is connected to the other end of resistor R4 and one end of resistor R5. The other end of resistor R5 receives a 5V input voltage. The inverting input of amplifier AR1 is connected to one end of resistor R7 and one end of resistor R6. The other end of resistor R7 is grounded. The output of amplifier AR1 is connected to the other end of resistor R6 and outputs a signal to the processor.

3. The protective device for a switching power supply testing equipment according to claim 1, characterized in that, The output of the signal acquisition module is connected to the P3.4 pin of the microcontroller. A temperature sensor is installed on the switching power supply test equipment. The temperature sensor acquires the signal, which is amplified by the amplification circuit and finally outputs a usable counting pulse. The microcontroller receives these pulses at its input, counts the time interval between adjacent pulses, calculates the temperature value, and displays it on the display module.

4. The protective device for a switching power supply testing equipment according to claim 1, characterized in that, The memory is used to store temperature data collected at each time interval.

5. The protective device for a switching power supply testing equipment according to claim 1, characterized in that, The alarm module includes: a player LS1, a transistor Q1, and a resistor R25; The player LS1 has a pin with an input voltage of 3.3V / 5V. One end of the resistor R25 is connected to the microcontroller, and the other end is connected to the base of the transistor Q1. The emitter of the transistor Q1 is grounded, and the collector is connected to another pin of the player LS1.

6. The protective device for a switching power supply testing equipment according to claim 1, characterized in that, The indicator lights of the display module are installed on the switching power supply testing equipment.

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