Power panel output circuit for sensor testing

Abstract

The utility model discloses a power panel output circuit used for sensor testing. The power panel output circuit used for sensor testing comprises a processor, a selection module, a first testing module and a second testing module. The selection module comprises a first selection chip, a first output chip, a third electrolytic capacitor and a third capacitor; the first test module comprises a first rectifier bridge, a second output chip, a third output chip, a second selection chip, a first electrolytic capacitor, a second electrolytic capacitor, a fourth electrolytic capacitor, a sixth electrolytic capacitor, a first capacitor and a second capacitor; the second test module comprises a second rectifier bridge, a fourth output chip, a fifth electrolytic capacitor, a seventh electrolytic capacitor and a fourth capacitor; the first test module and the second test module greatly reduce voltage fluctuation and current noise in power supply output through rectification, voltage stabilization, capacitance filtering and other multi-stage processing, and ensure the quality of the power supply supplied to the test end of the sensor.

Description

Technical Field

[0001] This utility model relates to the field of sensor testing technology, and in particular to a power board output circuit for sensor testing. Background Technology

[0002] With the continuous development of modern technology, people have increasingly higher requirements for sensor performance, which in turn leads to a growing demand for the accuracy of sensor performance testing.

[0003] A pressure sensor is a device that can sense pressure signals and convert them into usable electrical output signals according to a certain rule. Some pressure sensors are very sensitive, and current technology has relatively low accuracy in testing pressure sensors.

[0004] Therefore, improving the accuracy of pressure sensor testing has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] To address the aforementioned issues, this invention provides a power board output circuit for sensor testing, which outputs a more stable test voltage and test current for pressure sensor testing, thereby improving the accuracy of pressure sensor testing.

[0006] The present invention discloses the following technical solutions:

[0007] A power board output circuit for sensor testing includes:

[0008] Processor, selection module, first test module and second test module;

[0009] The selection module includes a first selection chip, a first output chip, a third electrolytic capacitor, and a third capacitor;

[0010] The first terminal of the first selection chip is connected to the first test module, the second terminal of the first selection chip is connected to the input terminal of the first output chip, the ground terminal of the first output chip is grounded, the output terminal of the first output chip is connected to the third electrolytic capacitor and the first terminal of the third capacitor, and the second terminal of the third electrolytic capacitor and the third capacitor is grounded.

[0011] The first test module includes a first rectifier bridge, a second output chip, a third output chip, a second selection chip, a first electrolytic capacitor, a second electrolytic capacitor, a fourth electrolytic capacitor, a sixth electrolytic capacitor, a first capacitor, and a second capacitor;

[0012] The second test module includes a second rectifier bridge, a fourth output chip, a fifth electrolytic capacitor, a seventh electrolytic capacitor, and a fourth capacitor.

[0013] Furthermore, the circuit further includes a switching circuit, the switching circuit comprising:

[0014] Switching chip, first resistor, second resistor, third resistor, adjustable resistor, voltage regulator and fifth capacitor;

[0015] The first terminal of the switching chip is connected to the first terminal of the second resistor, the second terminal of the second resistor is connected to the second terminal of the adjustable resistor, the first terminal of the adjustable resistor and the first terminal of the third resistor are connected to the first terminal of the voltage regulator, the third terminal of the adjustable resistor and the first terminal of the third resistor are connected to the first terminal of the voltage regulator, the second terminal of the third resistor and the second terminal of the voltage regulator are connected and grounded, the third terminal of the voltage regulator, the second terminal of the first resistor, the first terminal of the second resistor and the first terminal of the fifth capacitor are connected, and the second terminal of the fifth capacitor is grounded.

[0016] Furthermore, the circuit is further equipped with a 15V power supply, a 12V power supply, and a 5V power supply:

[0017] The first terminal of the third capacitor is connected to the positive terminal of the 15V power supply, the first terminal of the first capacitor is connected to the positive terminal of the 12V power supply, and the first terminal of the fourth capacitor is connected to the positive terminal of the 5V power supply.

[0018] Furthermore, the first end of the first rectifier bridge is connected to the first end of the first selection chip, the first end of the first electrolytic capacitor is connected to the input end of the second output chip, the second end of the first rectifier bridge is connected to the sixth end of the processor, the third end of the first rectifier bridge is connected to the fourth end of the processor, the fifth end of the processor is grounded, the output end of the second output chip is connected to the second electrolytic capacitor and the first end of the first capacitor, the second electrolytic capacitor and the second end of the first capacitor are grounded, the second end of the first electrolytic capacitor is connected to the first end of the fourth electrolytic capacitor, the second end of the fourth electrolytic capacitor is connected to the first end of the second selection chip, the first end of the second selection chip is connected to the input end of the third output chip, the output end of the third output chip is connected to the sixth electrolytic capacitor and the second end of the second capacitor, the first end of the sixth electrolytic capacitor is connected to the second end of the second electrolytic capacitor, and the first end of the second capacitor is connected to the second end of the first capacitor.

[0019] Furthermore, the first end of the second rectifier bridge and the input end of the fourth output chip are connected to the first end of the fifth electrolytic capacitor, the second end of the second rectifier bridge is connected to the second end of the processor, the third end of the second rectifier bridge is connected to the first end of the processor, the output end of the second rectifier bridge and the seventh electrolytic capacitor are connected to the first end of the fourth capacitor, and the second end of the fifth electrolytic capacitor, the ground end of the fourth output chip, the second end of the seventh electrolytic capacitor and the second end of the fourth capacitor are grounded.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention constructs a stable and efficient power output circuit by introducing a processor, a selection module, a first test module, and a second test module. The selection module effectively manages the output path through a first selection chip and a first output chip, and, combined with a third electrolytic capacitor and a third capacitor, improves the filtering capability and stability of the power output. The first and second test modules, through multi-stage processing including rectification, voltage regulation, and capacitor filtering, significantly reduce voltage fluctuations and current noise in the power output, ensuring the power quality supplied to the sensor testing end. Simultaneously, the processor controls and coordinates each module, enabling the entire system to flexibly switch output modes according to different testing requirements, further improving the adaptability and accuracy of the tests. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A circuit diagram of a power board output circuit for sensor testing provided by this utility model;

[0024] Figure 2 A circuit diagram of a switching circuit provided by this utility model. Detailed Implementation

[0025] As described above, in existing technologies, the instability of power supply output voltage and current can easily lead to errors when testing high-sensitivity pressure sensors, affecting the accuracy and reliability of test results. Especially with the increasingly stringent requirements for sensor performance, existing technologies are insufficient to meet the high standards of sensor testing accuracy, and a technical solution that can provide a stable and reliable power supply output is urgently needed.

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] This application provides a power board output circuit for sensor testing, including a processor, a selection module, a first test module, and a second test module, which will be described below with reference to the accompanying drawings.

[0028] Figure 1 This invention provides a circuit diagram of a power board output circuit for sensor testing. Figure 1 Including, in Figure 1 In the middle, CT1 represents the interface corresponding to CT1 in the processor.

[0029] Figure 1 The selection module can be displayed in the middle. Figure 1 In the middle, the selection module includes a first selection chip J1, a first output chip U1, a third electrolytic capacitor E3, and a third capacitor C3;

[0030] The first terminal of the first selection chip J1 is connected to the first test module. The second terminal of the first selection chip J1 is connected to the input terminal Vin of the first output chip U1. The ground terminal GND of the first output chip U1 is grounded. The output terminal Vout of the first output chip U1 is connected to the first terminal of the third electrolytic capacitor E3 and the third capacitor C3. The second terminals of the third electrolytic capacitor E3 and the third capacitor C3 are grounded.

[0031] Figure 1 The first test module can also be reflected in this. Figure 1 In the first test module, there are a first rectifier bridge DC1, a second output chip U2, a third output chip U3, a second selection chip J2, a first electrolytic capacitor E1, a second electrolytic capacitor E2, a fourth electrolytic capacitor E4, a sixth electrolytic capacitor E6, a first capacitor C1, and a second capacitor C2.

[0032] The first terminal of the first rectifier bridge DC1 is connected to the first terminal of the first select chip J1, the first terminal of the first electrolytic capacitor E1, and the input terminal Vin of the second output chip U2. The second terminal of the first rectifier bridge DC1 is connected to the sixth terminal of the processor CT1. The third terminal of the first rectifier bridge DC1 is connected to the fourth terminal of the processor CT1. The fifth terminal of the processor CT1 is grounded. The output terminal Vout of the second output chip U2 is connected to the first terminal of the second electrolytic capacitor E2 and the first terminal of the first capacitor C1. The second terminals of the second electrolytic capacitor E2 and the first capacitor C1 are grounded. The second terminal of the first electrolytic capacitor E1 is connected to the first terminal of the fourth electrolytic capacitor E4. The second terminal of the fourth electrolytic capacitor E4 is connected to the first terminal of the second select chip J2. The first terminal of the second select chip J2 is connected to the input terminal in of the third output chip U3. The output terminal out of the third output chip U3 is connected to the sixth electrolytic capacitor E6 and the second terminal of the second capacitor C2. The first terminal of the sixth electrolytic capacitor E6 is connected to the second terminal of the second electrolytic capacitor E2. The first terminal of the second capacitor C2 is connected to the second terminal of the first capacitor C1.

[0033] Figure 1 The first test module can also be reflected in it. Figure 1 The second test module includes the second rectifier bridge DC2, the fourth output chip U4, the fifth electrolytic capacitor E5, the seventh electrolytic capacitor E7, and the fourth capacitor C4.

[0034] The first terminal of the second rectifier bridge DC2 and the input terminal Vin of the fourth output chip U4 are connected to the first terminal of the fifth electrolytic capacitor E5. The second terminal of the second rectifier bridge DC2 is connected to the second terminal of the processor CT1. The third terminal of the second rectifier bridge DC2 is connected to the first terminal of the processor CT1. The output terminal of the second rectifier bridge DC2 and the seventh electrolytic capacitor E7 are connected to the first terminal of the fourth capacitor C4. The second terminal of the fifth electrolytic capacitor E5, the ground terminal GND of the fourth output chip U4, the second terminal of the seventh electrolytic capacitor E7, and the second terminal of the fourth capacitor C4 are grounded.

[0035] In one possible implementation, the circuit includes a 15V power supply, a 12V power supply, and a 5V power supply:

[0036] The first terminal of the third capacitor C3 is connected to the positive terminal of the 15V power supply, the first terminal of the first capacitor C1 is connected to the positive terminal of the 12V power supply, and the first terminal of the fourth capacitor C4 is connected to the positive terminal of the 5V power supply.

[0037] In general, when testing pressure sensors, multiple pressure sensors are connected simultaneously. The power board output circuit described above for sensor testing is only used to output stable voltage and current. To use these stable voltage and current to test one or more of the multiple pressure sensors, a switching circuit is needed to switch between them. Figure 2A circuit diagram of a switching circuit provided by this utility model.

[0038] Figure 2 The switching circuit shown includes a switching chip CT5, a first resistor R5, a second resistor R6, a third resistor R7, an adjustable resistor RV1, a voltage regulator ZD1, and a fifth capacitor C5.

[0039] The first terminal of the switching chip CT5 is connected to the first terminal of the second resistor R6. The second terminal of the second resistor R6 is connected to the second terminal of the adjustable resistor RV1. The first terminal of the adjustable resistor RV1 and the first terminal of the third resistor R7 are connected to the first terminal of the voltage regulator ZD1. The third terminal of the adjustable resistor RV1 and the first terminal of the three resistors R4 are connected to the first terminal of the voltage regulator ZD1. The second terminal of the third resistor R7 is connected to the second terminal of the voltage regulator ZD1 and grounded. The third terminal of the voltage regulator ZD1, the second terminal of the first resistor R5, the first terminal of the second resistor R6, and the first terminal of the fifth capacitor R7 are connected. The second terminal of the fifth capacitor C5 is grounded.

[0040] This invention constructs a stable and efficient power output circuit by introducing a processor, a selection module, a first test module, and a second test module. The selection module effectively manages the output path through a first selection chip and a first output chip, and, combined with a third electrolytic capacitor and a third capacitor, improves the filtering capability and stability of the power output. The first and second test modules, through multi-stage processing including rectification, voltage regulation, and capacitor filtering, significantly reduce voltage fluctuations and current noise in the power output, ensuring the power quality supplied to the sensor testing end. Simultaneously, the processor controls and coordinates each module, enabling the entire system to flexibly switch output modes according to different testing requirements, further improving the adaptability and accuracy of the tests.

[0041] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power board output circuit for sensor testing, characterized in that, include: Processor, selection module, first test module and second test module; The selection module includes a first selection chip, a first output chip, a third electrolytic capacitor, and a third capacitor; The first terminal of the first selection chip is connected to the first test module, the second terminal of the first selection chip is connected to the input terminal of the first output chip, the ground terminal of the first output chip is grounded, the output terminal of the first output chip is connected to the third electrolytic capacitor and the first terminal of the third capacitor, and the second terminal of the third electrolytic capacitor and the third capacitor is grounded. The first test module includes a first rectifier bridge, a second output chip, a third output chip, a second selection chip, a first electrolytic capacitor, a second electrolytic capacitor, a fourth electrolytic capacitor, a sixth electrolytic capacitor, a first capacitor, and a second capacitor; The second test module includes a second rectifier bridge, a fourth output chip, a fifth electrolytic capacitor, a seventh electrolytic capacitor, and a fourth capacitor.

2. The circuit according to claim 1, characterized in that, The circuit further includes a switching circuit, the switching circuit comprising: Switching chip, first resistor, second resistor, third resistor, adjustable resistor, voltage regulator and fifth capacitor; The first terminal of the switching chip is connected to the first terminal of the second resistor, the second terminal of the second resistor is connected to the second terminal of the adjustable resistor, the first terminal of the adjustable resistor and the first terminal of the third resistor are connected to the first terminal of the voltage regulator, the third terminal of the adjustable resistor and the first terminal of the third resistor are connected to the first terminal of the voltage regulator, the second terminal of the third resistor and the second terminal of the voltage regulator are connected and grounded, the third terminal of the voltage regulator, the second terminal of the first resistor, the first terminal of the second resistor and the first terminal of the fifth capacitor are connected, and the second terminal of the fifth capacitor is grounded.

3. The circuit according to claim 1, characterized in that, The circuit is further supplied with 15V, 12V, and 5V power supplies: The first terminal of the third capacitor is connected to the positive terminal of the 15V power supply, the first terminal of the first capacitor is connected to the positive terminal of the 12V power supply, and the first terminal of the fourth capacitor is connected to the positive terminal of the 5V power supply.

4. The circuit according to claim 1, characterized in that, The first end of the first rectifier bridge is connected to the first end of the first select chip, the first end of the first electrolytic capacitor is connected to the input end of the second output chip, the second end of the first rectifier bridge is connected to the sixth end of the processor, the third end of the first rectifier bridge is connected to the fourth end of the processor, the fifth end of the processor is grounded, the output end of the second output chip is connected to the second electrolytic capacitor and the first end of the first capacitor, the second end of the second electrolytic capacitor and the second end of the first capacitor are grounded, the second end of the first electrolytic capacitor is connected to the first end of the fourth electrolytic capacitor, the second end of the fourth electrolytic capacitor is connected to the first end of the second select chip, the first end of the second select chip is connected to the input end of the third output chip, the output end of the third output chip is connected to the sixth electrolytic capacitor and the second end of the second capacitor, the first end of the sixth electrolytic capacitor is connected to the second end of the second electrolytic capacitor, and the first end of the second capacitor is connected to the second end of the first capacitor.

5. The circuit according to claim 1, characterized in that, The first end of the second rectifier bridge and the input end of the fourth output chip are connected to the first end of the fifth electrolytic capacitor. The second end of the second rectifier bridge is connected to the second end of the processor. The third end of the second rectifier bridge is connected to the first end of the processor. The output end of the second rectifier bridge and the seventh electrolytic capacitor are connected to the first end of the fourth capacitor. The second end of the fifth electrolytic capacitor, the ground end of the fourth output chip, the second end of the seventh electrolytic capacitor, and the second end of the fourth capacitor are grounded.

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