Digital display sensor detection circuit, equipment and sensor

Abstract

The utility model relates to the technical field of electronic circuits, and discloses a digital display sensor detection circuit, equipment and a sensor, comprising a direct current module, a power supply module and a control module, the power supply module is respectively connected with the control module and the direct current module; the control module is also connected with the direct current module; and the direct current module is also connected with a sensor to be detected. Compared with a common sensor detection circuit in the market, the digital display sensor detection circuit can rapidly detect voltage values and current values of a sensor with a magnetic field and without a magnetic field, is high in test precision, can well guarantee the test reliability and accuracy, and has the advantages of high efficiency, labor cost reduction, wide application range, stability and the like.

Description

Technical Field

[0001] This application relates to the field of electronic circuit technology, and in particular to a digital display sensor detection circuit, device and sensor. Background Technology

[0002] Currently, most sensor testing fixtures on the market only have the ability to test basic functions when testing products. They cannot test more specialized parameters such as voltage and current.

[0003] This makes it impossible to accurately determine whether a product is qualified during testing, which undoubtedly poses a quality risk and could potentially lead to substandard products flowing into the next production stage or directly into the market. Utility Model Content

[0004] The purpose of this application is to provide a digital display sensor detection circuit, device and sensor, which aims to solve the technical problem that existing sensor detection circuits cannot detect special parameters such as voltage and current.

[0005] To achieve the above objectives, this application proposes a digital display sensor detection circuit, which includes: a DC current module, a power supply module, and a control module;

[0006] The power supply module is connected to the control module and the DC current module respectively; the control module is also connected to the DC current module; the DC current module is also connected to the sensor to be detected.

[0007] The power supply module is used to provide voltage to the DC current module and the control module;

[0008] The DC current module is used to transmit the electrical energy provided by the power supply module to the sensor under test in DC form under the control of the control module, and to feed back the current status information of the sensor under test to the control module.

[0009] The control module is used to receive the voltage and current status information of the power supply module and to detect the voltage and current values ​​of the sensor under test under magnetic field and non-magnetic field conditions.

[0010] In one embodiment, the control module is an all-in-one machine;

[0011] The integrated machine is connected to the DC current module, the power supply module, and the sensor to be tested.

[0012] In one embodiment, the all-in-one machine includes: an analog-to-digital converter;

[0013] The first end of the analog-to-digital converter is connected to the second end of the sensor to be detected;

[0014] The second end of the analog-to-digital converter is connected to the third end of the sensor to be detected;

[0015] The third terminal of the analog-to-digital converter is connected to the DC current module.

[0016] In one embodiment, the DC current module includes: a DC current sensor;

[0017] The first terminal of the DC current sensor is connected to the third terminal of the analog-to-digital converter;

[0018] The second end of the DC current sensor is connected to the second end of the sensor to be tested.

[0019] In one embodiment, the power supply module includes: a switching power supply;

[0020] The first terminal of the switching power supply is connected to the first terminal of the sensor to be detected.

[0021] The second terminal of the switching power supply is connected to the second terminal of the sensor to be tested, the first terminal of the analog-to-digital converter, the first terminal of the output port of the all-in-one machine, the first terminal of the input port of the all-in-one machine, and the first conversion terminal of the DC current sensor.

[0022] In one embodiment, the digital display sensor detection circuit further includes: a voice module;

[0023] The first end of the voice module is connected to the second end of the all-in-one machine's output port;

[0024] The second end of the voice module is connected to the third end of the all-in-one machine's output port.

[0025] In one embodiment, the digital display sensor detection circuit further includes: an electromagnet;

[0026] The first end of the electromagnet is connected to the first end of the switching power supply.

[0027] The second end of the electromagnet is connected to the fourth end of the output port of the all-in-one machine;

[0028] The electromagnet is used to provide a magnetic field or no magnetic field environment for the sensor to be detected.

[0029] In one embodiment, the digital display sensor detection circuit further includes: a voltage divider resistor;

[0030] The first end of the voltage divider resistor is connected to the third end of the sensor to be detected and the second end of the analog-to-digital converter;

[0031] The second end of the voltage divider resistor is connected to the second end of the sensor to be tested through the DC current sensor.

[0032] In addition, to achieve the above objectives, this application also proposes a digital display sensor detection device, which includes the digital display sensor detection circuit described above.

[0033] In addition, to achieve the above objectives, this application also proposes a sensor, which includes the digital display sensor detection circuit described above.

[0034] This application proposes a digital display sensor detection circuit, comprising: a DC current module, a power supply module, and a control module; the power supply module is connected to both the control module and the DC current module; the control module is also connected to the DC current module; the DC current module is also connected to the sensor under test; the power supply module provides voltage to both the DC current module and the control module; the DC current module, under the control of the control module, transmits the electrical energy provided by the power supply module in DC form to the sensor under test, and feeds back the current state information of the sensor under test to the control module; the control module receives the voltage from the power supply module and the current state information, and detects the voltage and current values ​​of the sensor under test under magnetic field and non-magnetic field conditions. Compared with commonly available sensor detection circuits, the digital display sensor detection circuit can quickly detect the voltage and current values ​​of the sensor under magnetic field and non-magnetic field conditions, and has high testing accuracy, ensuring reliable and accurate testing, high efficiency, reduced labor costs, wide application, and stability. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the module of the first embodiment of the digital display sensor detection circuit proposed in this application;

[0036] Figure 2 This is a circuit connection diagram of the second embodiment of the digital display sensor detection circuit proposed in this application.

[0037] Explanation of icon numbers:

[0038] label name label name 100 DC current module 110 DC current sensor 200 Power supply module 210 Switching power supply 300 Control module 310 All-in-one PC 400 Sensor under test 311 Analog-to-digital converter 500 Voice module R1 Voltage divider resistor 600 electromagnet Detailed Implementation

[0039] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0041] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0042] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0043] Reference Figure 1 , Figure 1 This is a schematic diagram of the module of the first embodiment of the digital display sensor detection circuit proposed in this application. Based on Figure 1 The first embodiment of the digital display sensor detection circuit of this application is presented.

[0044] This application proposes a digital display sensor detection circuit, which includes: a DC current module 100, a power supply module 200, and a control module 300; the power supply module 200 is connected to the control module 300 and the DC current module 100 respectively; the control module 300 is also connected to the DC current module 100; the DC current module 100 is also connected to the sensor 400 to be detected.

[0045] It should be understood that the digital display sensor detection circuit consists of a DC current module 100, a power supply module 200, and a control module 300. The power supply module 200 serves as a hub for connection and power supply, and it is connected to both the control module 300 and the DC current module 100. Simultaneously, the control module 300 is also connected to the DC current module 100, which in turn is connected to the sensor 400 under test. This connection relationship constitutes a complete detection circuit system.

[0046] The power supply module 200 is used to provide voltage to the DC current module 100 and the control module 300.

[0047] It should be noted that the power supply module 200 is primarily responsible for providing voltage to the DC current module 100 and the control module 300. It is the energy source for the entire circuit, providing the necessary power support for the normal operation of other modules. Without the stable voltage provided by the power supply module 200, the DC current module 100 cannot transmit electrical energy to the sensor under test 400, and the control module 300 cannot properly receive voltage and current status information.

[0048] The DC current module 100 is used to transmit the electrical energy provided by the power supply module 200 to the sensor under test in DC form under the control of the control module 300, and to feed back the current status information of the sensor under test 400 to the control module 300.

[0049] It should be understood that the DC current module 100 functions under the control of the control module 300. On one hand, it transmits the electrical energy provided by the power supply module 200 to the sensor under test 400 in DC form. This means it converts and transmits the electrical energy output by the power supply module 200 to ensure that the sensor under test 400 receives appropriate DC power. On the other hand, it also undertakes the task of feeding back the current state information of the sensor under test 400 to the control module 300. Through this feedback mechanism, the control module 300 can obtain the current state of the sensor and thus analyze the sensor's operating state.

[0050] The control module 300 is used to receive the voltage and current status information of the power supply module 200 and to detect the voltage and current values ​​of the sensor to be detected 400 under magnetic field and no magnetic field conditions.

[0051] It should be noted that the control module 300 plays a relatively complex role in the entire circuit. First, it receives voltage from the power supply module 200, which is one of its basic operating conditions. Simultaneously, it receives current status information fed back from the DC current module 100. Based on this received information, the control module 300 can detect the voltage and current values ​​of the sensor 400 under both magnetic and non-magnetic field conditions. By detecting the sensor's voltage and current values ​​under these two different magnetic field environments, the sensor's performance under different operating conditions can be analyzed, thereby determining whether the sensor is functioning normally and whether its operating characteristics meet the requirements.

[0052] In this embodiment, the digital display sensor detection circuit includes: a DC current module 100, a power supply module 200, and a control module 300; the power supply module 200 is connected to the control module 300 and the DC current module 100 respectively; the control module 300 is also connected to the DC current module 100; the DC current module 100 is also connected to the sensor 400 to be detected; the power supply module 200 is used to provide voltage to the DC current module 100 and the control module 300; the DC current module 100 is used to transmit the electrical energy provided by the power supply module 200 to the sensor 400 in DC form under the control of the control module 300, and to feed back the current status information of the sensor 400 to the control module 300; the control module 300 is used to receive the voltage of the power supply module 200 and the current status information, and to detect the voltage and current values ​​of the sensor 400 under magnetic field and non-magnetic field conditions. Compared to common sensor detection circuits on the market, digital display sensor detection circuits can quickly detect the voltage and current values ​​of sensors with and without magnetic fields. Moreover, they offer high testing accuracy, ensuring reliable and accurate testing, high efficiency, reduced labor costs, wide applicability, and stability.

[0053] Reference Figure 2 , Figure 2 This is a circuit connection diagram of the second embodiment of the digital display sensor detection circuit proposed in this application. The second embodiment of the digital display sensor detection circuit of this application is proposed based on the first embodiment of the digital display sensor detection circuit described above.

[0054] The control module 300 is an all-in-one machine 310; the all-in-one machine 310 is connected to the DC current module 100, the power supply module 200 and the sensor to be tested 400.

[0055] It should be noted that the all-in-one machine 310 is the Delta Electronics All-in-One Machine 310, model number MC-20MR-66T-430A-FX-B.

[0056] It should be understood that the all-in-one unit 310 is the core component of the control module 300, integrating multiple functions, including data processing, control logic, and user interface. It contains a microprocessor or controller for performing various tasks, such as data acquisition, analysis, and sending control commands. The DC current module 100 is likely a component used to measure or control DC current. It can convert DC current into a signal that can be processed by the all-in-one unit 310, or adjust the magnitude of the DC current according to the commands of the all-in-one unit 310. The power supply module 200 is responsible for providing power to the entire system. It includes batteries, power adapters, or other types of power supply devices to ensure the normal operation of the system. The sensor to be detected 400 is a device used to monitor or measure specific physical quantities, such as temperature, pressure, and humidity. These sensors convert physical quantities into electrical signals, which are then sent to the all-in-one unit 310 for processing and analysis. By connecting these components together, the control module 300 can monitor and control various physical quantities. For example, it can monitor the ambient temperature in real time and automatically adjust the operating status of the air conditioner according to preset conditions. This integrated design makes the system more compact and efficient, while also facilitating maintenance and management.

[0057] The all-in-one machine 310 includes: an analog-to-digital converter 311; a first end of the analog-to-digital converter 311 is connected to a second end of the sensor 400 to be tested; a second end of the analog-to-digital converter 311 is connected to a third end of the sensor 400 to be tested; and a third end of the analog-to-digital converter 311 is connected to the DC current module 100.

[0058] It should be noted that the analog-to-digital converter 311 plays a crucial bridging role in this all-in-one machine 310. Its main responsibility is to convert analog signals into digital signals for subsequent digital processing. In this structure, it has specific connections with the sensor under test 400 and the DC current module 100. The first terminal of the analog-to-digital converter 311 is connected to the second terminal of the sensor under test 400. This connection is for transmitting a specific signal, perhaps an analog signal output by the sensor under test 400, which is transmitted to the analog-to-digital converter 311 through this connection point. This signal may contain the analog electrical signal corresponding to the physical quantity (such as temperature, pressure, etc.) detected by the sensor under test 400. The second terminal of the analog-to-digital converter 311 is connected to the third terminal of the sensor under test 400. This connection may be for forming a loop or for transmitting auxiliary signals related to the sensor, such as a reference voltage signal. Through this connection, it is ensured that the sensor can function properly and transmit the correct signal to the analog-to-digital converter 311. The third terminal of the analog-to-digital converter 311 is connected to the DC current module 100. This connection may be to provide the necessary DC power to the analog-to-digital converter 311 or to implement control functions related to DC current. The DC current module 100 may provide a stable operating current to the analog-to-digital converter 311 to ensure that it can perform analog-to-digital conversion normally and that no errors occur during the conversion process due to factors such as power fluctuations.

[0059] The DC current module 100 includes: a DC current sensor 110; the first end (red dot) of the DC current sensor 110 is connected to the third end of the analog-to-digital converter 311; the second end (black dot) of the DC current sensor 110 is connected to the second end of the sensor to be tested 400.

[0060] It should be noted that the DC current sensor 110 has parameters of 20mA / 5V. It plays a crucial role in detecting DC current in this module. It can accurately sense the magnitude of the DC current in the circuit, providing a current signal source for subsequent processing (such as analog-to-digital conversion).

[0061] It should be understood that the first terminal of the DC current sensor 110 is connected to the third terminal of the analog-to-digital converter 311. This connection allows the DC current signal detected by the DC current sensor 110 to be transmitted to the analog-to-digital converter 311. The function of the analog-to-digital converter 311 is to convert the analog signal (here, the analog signal corresponding to the DC current) into a digital signal for processing by digital circuits. This connection ensures the correct signal transmission path and is the starting point of the analog-to-digital signal conversion process in the entire system. The second terminal of the DC current sensor 110 is connected to the second terminal of the sensor under test 400. This connection may serve multiple purposes in the circuit. On the one hand, it may be to form a circuit loop, making the entire circuit system form a complete structure that conforms to circuit principles in terms of current detection. On the other hand, it may be related to the operating principle of the sensor under test 400. For example, the sensor under test 400 may affect the magnitude of the DC current, or the DC current sensor 110 may monitor the operating state of the sensor under test 400. This connection enables the interaction of electrical characteristics between the two.

[0062] The power supply module 200 includes: a switching power supply 210; the first terminal (VCC) of the switching power supply 210 is connected to the first terminal of the sensor under test 400; the second terminal (GND) of the switching power supply 210 is connected to the second terminal (black dot) of the sensor under test 400, the first terminal of the analog-to-digital converter 311, the first terminal of the output port of the all-in-one machine 310, the first terminal of the input port of the all-in-one machine 310, and the first conversion terminal of the DC current sensor 110.

[0063] It should be noted that the switching power supply 210 is a Mean Well D-75B model. The first and second terminals of the switching power supply 210 are connected to the first and second terminals of the sensor under test 400, respectively. This connection method ensures that the sensor under test 400 receives power from the switching power supply 210 and thus operates normally. This is fundamental to the entire detection system's ability to acquire sensor data; without a stable power supply, accurate detection is impossible.

[0064] It should be understood that the second terminal of the switching power supply 210 is connected to the first terminal of the analog-to-digital converter 311. The analog-to-digital converter 311 plays a crucial role in the system by converting analog signals into digital signals. To function properly, it requires power from the switching power supply 210. A stable power supply is essential for the accurate signal conversion by the analog-to-digital converter 311; otherwise, conversion errors or signal distortion may occur.

[0065] It should be noted that the second terminal of the switching power supply 210 is connected to both the first terminal of the output port and the first terminal of the input port of the all-in-one machine 310. The all-in-one machine 310 may be a comprehensive processing device in the entire system; its input port is used to receive external signals or data, and its output port is used to send processed results, etc. This power connection ensures the normal operation of the input and output functions of the all-in-one machine 310, providing the necessary power support for the internal circuits and related components of the all-in-one machine 310.

[0066] It should be understood that the second terminal of the switching power supply 210 is connected to the first conversion terminal of the DC current sensor 110. The DC current sensor 110 is used to detect the magnitude of DC current or other related parameters. After its first conversion terminal receives a power supply, it can start and perform accurate current detection. Without a stable power supply, the DC current sensor 110 may not function properly, thus affecting the entire system's acquisition and analysis of DC current-related data.

[0067] In this embodiment, by determining the model and parameters of the integrated machine 310, the switching power supply 210, and the DC current sensor 110, a digital display sensor detection circuit is constructed. This allows the digital display sensor detection circuit to quickly detect the voltage and current values ​​of the sensor when there is a magnetic field and when there is no magnetic field. Moreover, the test accuracy is high, which can well ensure the reliability and accuracy of the test. It also has the advantages of high efficiency, reduced labor costs, wide application and stability.

[0068] The digital display sensor detection circuit further includes: a voice module 500; the first end of the voice module 500 is connected to the second end of the output port of the all-in-one machine 310; the second end of the voice module 500 is connected to the third end of the output port of the all-in-one machine 310.

[0069] It should be understood that the voice module uses the DT9001-FL, and the inclusion of voice module 500 is likely for providing voice prompt functionality. When the digital display sensor detects specific data or state changes, voice module 500 can issue corresponding voice prompts based on the signals received from the output port of the all-in-one machine 310. For example, if the digital display sensor detects a value outside the normal range, voice module 500 may receive a signal from the output port of the all-in-one machine 310 and then issue a "value abnormal" voice prompt. Voice module 500 may also be used to assist operators. For example, during the initialization or calibration process of the detection circuit, voice module 500 can prompt the operator to perform corresponding operating steps based on the signals from the output port of the all-in-one machine 310, improving the convenience and accuracy of operation.

[0070] The digital display sensor detection circuit further includes: an electromagnet 600; the first end of the electromagnet 600 is connected to the first end of the switching power supply 210; the second end of the electromagnet 600 is connected to the fourth end of the output port of the all-in-one machine 310; the electromagnet 600 is used to provide a magnetic field or non-magnetic field environment for the sensor 400 to be tested.

[0071] It should be noted that the electromagnet 600 is a P20 / 15 model with a suction force of 3KG and a DC5V voltage. The electromagnet 600 is connected to the first terminal of the switching power supply 210 and the fourth terminal of the output port of the all-in-one device 310. The first terminal of the switching power supply 210 provides power to the electromagnet 600. The power supply provides suitable voltage and current to the electromagnet 600, enabling it to operate normally and generate a magnetic field. The connection between the fourth terminal of the output port of the all-in-one device 310 and the electromagnet 600 may suggest that the all-in-one device 310 has some control or information interaction function over the electromagnet 600. The all-in-one device 310 may use this output port to adjust the operating state of the electromagnet 600, such as changing the current of the electromagnet 600 to control the magnetic field strength, or controlling the on / off state of the electromagnet 600 through some encoding method.

[0072] The digital display sensor detection circuit further includes: a voltage divider resistor R1; the first end of the voltage divider resistor R1 is connected to the third end of the sensor under test 400 and the second end of the analog-to-digital converter 311; the second end of the voltage divider resistor R1 is connected to the second end of the sensor under test 400 through the DC current sensor 110.

[0073] It should be understood that the voltage divider resistor R1, through its connection with the sensor under test 400 and the analog-to-digital converter 311, achieves voltage regulation. The output voltage of the sensor under test 400 may not meet the input voltage requirements of the analog-to-digital converter 311. The voltage divider resistor R1 can adjust it to a suitable range to ensure that the analog-to-digital converter 311 can accurately convert analog signals into digital signals. The connection between the DC current sensor 110, the voltage divider resistor R1, and the sensor under test 400 facilitates the detection of current-related parameters of the sensor. By detecting the current flowing through the sensor, information such as the sensor's power consumption can be obtained. Combined with the voltage condition across the voltage divider resistor R1, a more comprehensive assessment of the sensor's performance and operating status can be made. For example, if a sensor malfunction causes an abnormal increase or decrease in current, this connection method can detect this change, thereby promptly identifying sensor problems.

[0074] In this embodiment, by adding a voice module 500, an electromagnet 600, and a voltage divider resistor R1, the digital display sensor detection circuit is made more complete. It can quickly detect the voltage and current values ​​of the sensor when there is a magnetic field and when there is no magnetic field. Moreover, the test accuracy is high, which can well ensure the reliability and accuracy of the test. It has the advantages of high efficiency, reduced labor costs, wide application and stability.

[0075] Furthermore, this application also proposes a digital display sensor detection device, which includes the aforementioned digital display sensor detection circuit. Since the digital display sensor detection device employs all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0076] Furthermore, this application also proposes a sensor that includes the aforementioned digital display sensor detection circuit. Since the sensor employs all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0077] The above are only some embodiments of this application and do not limit the scope of implementation of this application. Any equivalent structural or procedural transformations made based on the content of this application specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the protection scope of this application.

Claims

1. A digital display sensor detection circuit, characterized in that, The digital display sensor detection circuit comprises a direct current module, a power supply module and a control module; The power supply module is connected with the control module and the direct current module; the control module is also connected with the direct current module; and the direct current module is also connected with the sensor to be detected; The power supply module is configured to provide voltage for the direct current module and the control module; The direct current module is configured to transmit the electric energy provided by the power supply module to the sensor to be detected in the form of direct current under the control of the control module, and feed back the current state information of the sensor to be detected to the control module; The control module is configured to receive the voltage of the power supply module and the current state information, and detect the voltage value and the current value of the sensor to be detected under the magnetic field and the non-magnetic field.

2. The digital readout sensor detection circuit of claim 1, wherein, The control module is an all-in-one machine; The all-in-one machine is connected with the direct current module, the power supply module and the sensor to be detected.

3. The digital readout sensor detection circuit of claim 2, wherein, The all-in-one machine comprises an analog-to-digital converter; The first end of the analog-to-digital converter is connected with the second end of the sensor to be detected; The second end of the analog-to-digital converter is connected with the third end of the sensor to be detected; The third end of the analog-to-digital converter is connected with the direct current module.

4. The digital readout sensor detection circuit of claim 3, wherein, The direct current module comprises a direct current sensor; The first end of the direct current sensor is connected with the third end of the analog-to-digital converter; The second end of the direct current sensor is connected with the second end of the sensor to be detected.

5. The digital readout sensor detection circuit of claim 4, wherein, The power supply module comprises a switching power supply; The first end of the switching power supply is connected with the first end of the sensor to be detected; The second end of the switching power supply is connected with the second end of the sensor to be detected, the first end of the analog-to-digital converter, the first end of the output port of the all-in-one machine, the first end of the input port of the all-in-one machine and the first conversion end of the direct current sensor.

6. The digital readout sensor detection circuit of claim 5, wherein, The digital display sensor detection circuit further comprises a voice module; The first end of the voice module is connected with the second end of the output port of the all-in-one machine; The second end of the voice module is connected with the third end of the output port of the all-in-one machine.

7. The digital readout sensor detection circuit of claim 6, wherein, The digital display sensor detection circuit further comprises an electromagnet; The first end of the electromagnet is connected with the first end of the switching power supply; The second end of the electromagnet is connected with the fourth end of the output port of the all-in-one machine; The electromagnet is configured to provide the sensor to be detected with a magnetic field or a non-magnetic field environment.

8. The digital readout sensor detection circuit of claim 7, wherein, The digital display sensor detection circuit further comprises a voltage dividing resistor; The first end of the voltage dividing resistor is connected with the third end of the sensor to be detected and the second end of the analog-to-digital converter; The second end of the voltage dividing resistor is connected with the second end of the sensor to be detected through the direct current sensor.

9. A digital readout sensor detection apparatus, characterized by, The digital display sensor detection device comprises the digital display sensor detection circuit according to any one of claims 1 to 8.

10. A sensor, characterized by The sensor comprises the digital display sensor detection circuit according to any one of claims 1 to 8.

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