On-site intelligent detection box for composite sensor

Abstract

The utility model discloses a composite sensor field intelligent detection box, belonging to the sensor detection technology field, the detection box comprises a sensor detection circuit, the sensor detection circuit comprises a battery, a first DC / DC converter, a constant current source circuit, a second DC / DC converter, an MCU board and a display screen. According to the utility model, vibration direct current bias signals of the sensor can be collected, alternating current vibration signals output by the sensor can be tracked and processed in real time, data can be updated and displayed in real time through the liquid crystal display screen, and faults can be eliminated on site without professionals and clients; the battery is detachably connected, charging is convenient without an external power source, and the box body is convenient to carry.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensor detection, and in particular relates to an on-site intelligent detection box of a composite sensor. Background Art

[0002] Vibration sensors are widely used in the field of industrial production. They can be used to measure the vibration acceleration of mechanical equipment, monitor the operating status of the machine, and realize remote monitoring of the equipment. When the client cannot collect the vibration signal or the collected vibration signal is abnormal, it is necessary to find the problem and troubleshoot. The sensor is the first object to be suspected. Since the sensor has been installed on the equipment under test and is not convenient to disassemble, the customer will ask the technician to go to the site to assist them in solving the problem, and the troubleshooting time is long. Since the sensor is an active device, the technician needs to bring some detection equipment, and the detection process is cumbersome. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a composite sensor on-site intelligent detection box for automatically detecting various sensor faults on-site.

[0004] Technical solution: In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0005] A composite sensor on-site intelligent detection box comprises a sensor detection circuit, wherein the sensor detection circuit comprises a battery, a first DC / DC converter connected to the battery, a constant current source circuit connected to the first DC / DC converter, a second DC / DC converter connected to the battery, an MCU board connected to the second DC / DC converter, and a display screen connected to the MCU board.

[0006] Furthermore, the first DC / DC converter includes a first output terminal and a second output terminal, the second output terminal is used to connect to a voltage type sensor, and the MCU board includes a first receiving terminal, a second receiving terminal and a third receiving terminal, and the third receiving terminal is used to connect to the voltage type sensor.

[0007] Furthermore, the constant current source circuit includes a first working end and a second working end, the first working end is used to connect to an IEPE sensor and provide a 4mA constant current source, the second working end is used to connect to a temperature sensor and provide a 2mA constant current source, the IEPE sensor is connected to the first receiving end, and the temperature sensor is connected to the second receiving end.

[0008] Furthermore, the battery is a lithium battery, and the battery is detachably connected to the sensor detection circuit.

[0009] Furthermore, the sensor detection circuit is arranged on a board, and the board is accommodated in the box body.

[0010] Furthermore, the box body is provided with a first plug interface corresponding to the IEPE sensor, a second plug interface corresponding to the temperature sensor, and a third plug interface corresponding to the voltage type sensor.

[0011] Beneficial effects: Compared with the prior art, the utility model has the following advantages:

[0012] 1. By setting the first DC / DC converter, constant current source circuit, second DC / DC converter, MCU board and display screen in the detection circuit, it can not only collect the vibration DC bias signal of the sensor, but also track and process the AC vibration signal output by the sensor in real time, and update and display the data in real time through the LCD screen. Customers can troubleshoot on site without professionals;

[0013] 2. The battery is detachable and easy to charge without external power supply, and the box is easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a sensor detection circuit diagram when the embodiment of the utility model is working;

[0015] Figure 2 It is a schematic diagram of the box structure. DETAILED DESCRIPTION

[0016] The present invention will be further explained below in conjunction with specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0017] like Figure 1 and Figure 2 As shown, a composite sensor on-site intelligent detection box includes a sensor detection circuit, a board 8 and a box 9, wherein the sensor detection circuit is arranged on the board 8, and the board 8 is arranged in the box 9. The box 9 is provided with a first plug interface 91 corresponding to the IEPE sensor 71, a second plug interface 92 corresponding to the temperature sensor 72, and a third plug interface 93 corresponding to the voltage type sensor 73. The first plug interface 91, the second plug interface 92 and the third plug interface 93 are connected to the sensor detection circuit. When it is necessary to detect whether a certain sensor is faulty, the plug interface is connected to the corresponding sensor through a connector.

[0018] like Figure 1 and Figure 2As shown, the sensor detection circuit includes a battery 1, a first DC / DC converter 2, a constant current source circuit 3, a second DC / DC converter 4, an MCU board 5 and a display screen 6. In this embodiment, the battery 1 adopts a 9V lithium battery, and the battery 1 adopts a detachable type. The sensor detection circuit is provided with an interface corresponding to the battery 1, and the box body 9 is provided with a battery compartment corresponding to the battery 1. The battery 1 can be charged using a charging cable, and the box body 9 is provided with a charging interface. The battery 1 can be replaced after being damaged. The box body 9 is provided with a switch electrically connected to the battery 1 for controlling the power on and off. The positive electrode of the battery 1 is connected to the input end of the first DC / DC converter 2, and the first DC / DC converter 2 is used to provide a 15V DC power supply. The first DC / DC converter 2 includes a first output end and a second output end. The first output end and the constant current source circuit 3 are used to provide power to the constant current source circuit 3. The common end of the constant current source circuit 3 is connected to the negative electrode of the battery 1. The constant current source circuit 3 includes a first working end and a second working end. The first working end is used to provide a 4mA constant current source, and the second working end is used to provide a 2mA constant current source. The positive electrode of the battery 1 is connected to the second DC / DC converter 4, the second DC / DC converter 4 is connected to the MCU board 5 and provides a 3.3V power supply, the common end of the MCU board 5 is connected to the negative electrode of the battery 1, the MCU board 5 is an existing single-chip microcomputer which uses a high-precision, high-sampling rate ARM-M4 core chip as a main operator, the MCU board 5 includes a first receiving end, a second receiving end and a third receiving end, the MCU board 5 also includes an SPI interface for connecting to a display screen 6, the display screen 6 uses an existing liquid crystal display screen, and the display screen 6 is arranged on the front of the box body 9.

[0019] like Figure 1 As shown, the second output end of the first DC / DC converter 2 is connected to the third plug interface 93. When it is necessary to detect whether a certain voltage type sensor is faulty, the voltage type sensor 73 is connected to the third plug interface 93, the voltage type sensor 73 is connected to the second output end of the first DC / DC converter 2, the common end of the voltage type sensor 73 is connected to the negative pole of the battery 1, and the output end of the voltage type sensor 73 is connected to the third receiving end of the MCU board 5, so as to collect the signal output by the voltage type sensor 73 and display it on the display screen 6 to determine whether the voltage type sensor 73 is faulty.

[0020] like Figure 1As shown, the first working end of the constant current source circuit 3 is used to connect with the IEPE sensor 71. When it is necessary to detect whether a certain IEPE sensor is faulty, the IEPE sensor 71 is connected to the first plug interface 91, and the input end of the IEPE sensor 71 is connected to the first working end of the constant current source circuit 3. The first working end provides a 4mA constant current source. The common end of the IEPE sensor 71 is connected to the negative electrode of the battery 1, and the input end of the IEPE sensor 71 is connected to the first receiving end of the MCU board 5, so that the AC vibration signal output by the IEPE sensor 71 is tracked and processed in real time, and the data is updated and displayed in real time through the liquid crystal display to determine whether the IEPE sensor 71 is faulty.

[0021] like Figure 1 As shown, the second working end of the constant current source circuit 3 is used to connect with the temperature sensor 72. When it is necessary to detect whether a certain temperature sensor is faulty, the temperature sensor 72 is connected to the second plug interface 92. In this embodiment, the temperature sensor 72 is a PT100 temperature sensor. The input end of the temperature sensor 72 is connected to the second working end of the constant current source circuit 3. The second working end provides a 2mA constant current source. The common end of the temperature sensor 72 is connected to the negative electrode of the battery 1, and the input end of the temperature sensor 72 is connected to the second receiving end of the MCU board 5, so that the signal output by the temperature sensor 72 is collected and displayed on the display screen 6 to determine whether the temperature sensor 72 is faulty.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A composite sensor on-site intelligent detection box, characterized in that: The invention comprises a sensor detection circuit, wherein the sensor detection circuit comprises a battery (1), a first DC / DC converter (2) connected to the battery (1), a constant current source circuit (3) connected to the first DC / DC converter (2), a second DC / DC converter (4) connected to the battery (1), an MCU board (5) connected to the second DC / DC converter (4), and a display screen (6) connected to the MCU board (5).

2. The composite sensor on-site intelligent detection box according to claim 1, characterized in that: The first DC / DC converter (2) comprises a first output terminal and a second output terminal, the second output terminal being used to connect to a voltage type sensor, and the MCU board (5) comprises a first receiving terminal, a second receiving terminal and a third receiving terminal, the third receiving terminal being used to connect to the voltage type sensor.

3. The composite sensor on-site intelligent detection box according to claim 2, characterized in that: The constant current source circuit (3) comprises a first working end and a second working end, the first working end is used to connect to an IEPE sensor and provide a 4mA constant current source, the second working end is used to connect to a temperature sensor and provide a 2mA constant current source, the IEPE sensor is connected to the first receiving end, and the temperature sensor is connected to the second receiving end.

4. The composite sensor on-site intelligent detection box according to claim 2, characterized in that: The battery (1) is a lithium battery, and the battery (1) is detachably connected to the sensor detection circuit.

5. The composite sensor on-site intelligent detection box according to claim 3, characterized in that: The sensor detection circuit is arranged on a plate body (8), and the plate body (8) is accommodated in a box body (9).

6. The composite sensor on-site intelligent detection box according to claim 5, characterized in that: The box body (9) is provided with a first plug interface (91) corresponding to the IEPE sensor, a second plug interface (92) corresponding to the temperature sensor, and a third plug interface (93) corresponding to the voltage type sensor.

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