CN214702326U

CN214702326U - Portable sensor detection device

Info

Publication number: CN214702326U
Application number: CN202121360582.6U
Authority: CN
Inventors: 王文; 庞浩明
Original assignee: Yunnan Poly Tiantong Underwater Equipment Technology Co Ltd
Current assignee: Yunnan Poly Tiantong Underwater Equipment Technology Co Ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2021-11-12
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses a portable sensor detection device relates to sensor detection technical field. Install the sensor to be surveyed at the sensor interface, make the device begin work through pressing the button, under the test instruction of MCU module, the sensor data to be surveyed feeds back to the MCU module through serial communication module, the MCU module is after analysis and operation to data, shows data result through the display screen, and the button switches the display data, judges whether qualified by the sensor to be surveyed through the display data. The detection device uses a rechargeable lithium battery for power supply, the charging interface is connected to the charging management circuit, the lithium battery is charged through voltage-current conversion, the rear end of the lithium battery is connected with each power supply module, and after the voltage is converted into the voltage required by each module, the power supply module supplies power to each module. The PCB circuit board and the lithium battery are integrated in one accommodating space through the panel shell and the cover plate shell, so that the detection device is convenient to carry and move.

Description

Portable sensor detection device

Technical Field

The utility model relates to a sensor detects technical field, concretely relates to portable sensor detection device.

Background

The sensor can convert the physical quantity to be measured into digital quantity which can be conveniently read by data acquisition equipment such as a computer, a control terminal, an intelligent instrument and the like through a sensitive element and a corresponding circuit, and is widely applied to various industrial automatic control environments to monitor the production or operation process in real time. In order to ensure the quality of the sensor, a sensor manufacturer or a purchaser acquires and detects data of the sensor to determine whether the sensor is qualified. During use, the sensor state also needs to be periodically overhauled. The existing detection method mainly uses a computer provided with analysis software to be matched with a sensor interface box, and when the detection method is used, after a sensor is connected with a test connector, parameter information in the sensor, such as a sensor serial number, a measuring range and the like, is read through the analysis software. The detection equipment has high purchase price, large volume and inconvenient use, thus leading to low detection efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a portable sensor detection device solves the inconvenient problem that leads to detection efficiency low of current sensor check out test set use.

In order to solve the technical problem, the utility model adopts the following technical scheme: a portable sensor testing device, comprising: the panel shell is covered on the panel shell, a key and a display screen are arranged on the panel shell, and a lithium battery insulating plate and a PCB circuit board are sequentially arranged from the cover plate shell upwards in an accommodating space formed by the cover plate shell and the panel shell; the PCB is provided with a charging interface, a charging management circuit, a first power supply module, an MCU module, a second power supply module, a serial communication module, a third power supply module and a sensor interface; the lithium battery is sequentially connected with the charging management circuit, the charging interface and the external power supply; the MCU module is respectively in signal connection with the keys, the display screen, the first power supply module and the serial communication module, and the serial communication module is in signal connection with the third power supply module and the sensor interface; the lithium battery is electrically connected with the first power supply module, the second power supply module and the third power supply module respectively; the first power module supplies power to the display screen, the third power module supplies power to the sensor to be tested through the sensor interface, and the second power module supplies power to the serial communication module.

A power supply reverse connection protection circuit is arranged between the lithium battery and the first power supply module, the power supply reverse connection protection circuit is a P-channel MOS (metal oxide semiconductor) tube, and the power supply reverse connection protection circuit is in signal connection with an ADC (analog to digital converter) acquisition circuit, the second power supply module and the third power supply module of the MCU module.

A power switch circuit is arranged between the power supply reverse connection protection circuit and the second power supply module and between the power supply reverse connection protection circuit and the third power supply module.

The PCB circuit board is further provided with a buzzer, and the MCU module is in signal connection with the buzzer.

The PCB circuit board is further provided with a program downloading interface, and the MCU module is in signal connection with the program downloading interface.

The further technical scheme is that the MCU module is a 32-bit microcontroller with an ARM Cortex-M3 kernel.

The working principle is as follows: during the use, will be surveyed the sensor and install at the sensor interface, make the device begin work through pressing the button, under the test instruction of MCU module, be surveyed sensor data and feed back to the MCU module through serial communication module, the MCU module is to data through analysis and operation back, shows data result through the display screen, and the button switches display data, judges through display data whether qualified by the survey sensor.

The detection device uses a rechargeable lithium battery for power supply, the charging interface is connected to the charging management circuit, the lithium battery is charged through voltage-current conversion, the rear end of the lithium battery is connected with each power supply module, and after the voltage is converted into the voltage required by each module, the power supply module supplies power to each module.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the PCB and the lithium battery are integrated in one accommodating space through the panel shell and the cover plate shell, so that the detection device is convenient to carry and move, and the test requirements of various on-site sensors are met; test data are directly read through the keys and the display screen, so that convenience and rapidness are realized; satisfy through the lithium cell and charge, the power supply demand, separate PCB board and lithium cell through the insulation board, avoid PCB board pin and lithium cell direct contact, damage the lithium cell.

2. The power supply voltage of the lithium battery is converted into the voltage required by the work of each module through the arrangement of the power supply module; the lithium battery is protected by the power supply reverse connection protection circuit, and the circuit burning caused by wrong connection is avoided; the power switch circuit is used for controlling the on-off of the voltage, so that the power consumption of the detection device after shutdown is effectively controlled.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an assembly diagram of the present invention.

Fig. 3 is a schematic block diagram of the structure of the present invention.

In the figure: 1-panel shell, 2-cover plate shell, 3-key, 4-display screen, 5-lithium battery, 6-insulating plate, 7-PCB circuit board, 8-charging interface, 9-charging management circuit, 10-first power supply module, 11-MCU module, 12-second power supply module, 13-serial communication module, 14-third power supply module, 15-sensor interface, 16-power supply reverse connection protection circuit, 17-buzzer, 18-program downloading interface and 19-power supply switch circuit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Fig. 1 and 2 show a portable sensor detection device, which comprises a panel housing 1 and a cover plate housing 2, wherein the panel housing 1 is a hollow housing with an opening at the bottom, a key 3 and a display screen 4 are installed on the panel housing 1, the cover plate housing 2 is plate-shaped, and the cover plate housing 2 is fixed at the bottom of the panel housing 1 through a fastener. In the accommodation space that apron casing 2 and panel casing 1 constitute, upward lithium cell 5, insulation board 6, PCB circuit board 7 have set gradually from apron casing 2. Separate PCB board 7 and lithium cell 5 through insulation board 6, avoid 7 bottom pins of PCB board and sharp-pointed part and 6 direct contact of lithium cell, damage lithium cell 6, prolong lithium cell 6's life-span greatly. For the assembly of being convenient for, be provided with the fastener hole of stepping down on the apron casing 2, one side is to the epirelief formation flange, and it has U type groove to open on the

panel casing

1, and 1 both sides bottom of panel casing simultaneously makes progress the concave recess that forms, and the flange joint is in U type inslot during the assembly, and 2 both sides of apron casing are located the recess, and it is fixed to reuse the fastener, and 2 location installations of the apron casing of being convenient for.

The PCB circuit board 7 is provided with a charging interface 8, a charging management circuit 9, a first power supply module 10, an MCU module 11, a second power supply module 12, a serial communication module 13, a third power supply module 14, a sensor interface 15, a power supply reverse connection protection circuit 16, a buzzer 17, a program downloading interface 18 and a power supply switch circuit 19.

As shown in fig. 3, the lithium battery 5 is connected to the charge management circuit 9, the charging interface 8, and the external power supply in this order, and the lithium battery 5 is charged by the external power supply.

The MCU module 11 selects a 32-bit microcontroller with an ARM Cortex-M3 kernel, and the model is GD32F103RET 6. The MCU module 11 is respectively in signal connection with the key 3, the display screen 4, the first power supply module 10, the serial communication module 13, the buzzer 17 and the program downloading interface 18.

The lithium battery 5 is connected with a power supply reverse connection protection circuit 16, the power supply reverse connection protection circuit 16 is composed of a circuit of a P-channel MOS tube, and the power supply reverse connection protection circuit 16 is respectively connected with an ADC acquisition circuit of the MCU module 11, the first power supply module 10 and a power supply switch circuit 19.

The power switch circuit 19 is in signal connection with the MCU module 11, the second power module 12, and the third power module 14. The second power module 12 supplies power to the serial communication module 13, and the third power module 14 supplies power to the sensor to be tested connected to the sensor interface 15. The first power module 10 supplies power to the MCU module 11 and the display screen 4. The power supply voltage of the lithium battery 5 is converted into the voltage required by the operation of each module through the power supply module. The lithium battery is protected by the power supply reverse connection protection circuit, and the circuit burning caused by wrong connection is avoided; the power switch circuit is used for controlling the on-off of the voltage, so that the power consumption of the detection device after shutdown is effectively controlled.

During the use, will be surveyed the sensor and install at sensor interface 15, make the device begin work through pressing button 3, under MCU module 11's test instruction, the data of being surveyed the sensor feed back to MCU module 11 through serial communication module 13, MCU module 11 is to data through the analysis and the operation back, show the data result through display screen 4, button 3 switches the display data, judge whether qualified by the survey sensor through the display data. Whether the key 3 is pressed successfully is indicated by the buzzer 17. The ADC acquisition circuit of the MCU module 11 acquires the voltage signal transmitted by the power reverse connection protection circuit 16, and converts the voltage signal into the current battery power to be displayed on the display screen 4. When the electric quantity is insufficient, the external power supply is connected with the charging interface 8, and the lithium battery 5 is charged through the charging management circuit 9.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More particularly, various variations and modifications are possible in the component parts and/or arrangements within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. A portable sensor testing device, comprising: the novel LED display panel comprises a panel shell (1) and a cover plate shell (2), wherein the cover plate shell (2) covers the panel shell (1), a key (3) and a display screen (4) are arranged on the panel shell (1), and a lithium battery (5), an insulating plate (6) and a PCB circuit board (7) are sequentially arranged from the cover plate shell (2) to the top in a containing space formed by the cover plate shell (2) and the panel shell (1); the PCB (7) is provided with a charging interface (8), a charging management circuit (9), a first power supply module (10), an MCU module (11), a second power supply module (12), a serial communication module (13), a third power supply module (14) and a sensor interface (15); the lithium battery (5) is sequentially connected with the charging management circuit (9), the charging interface (8) and an external power supply; the MCU module (11) is respectively in signal connection with the key (3), the display screen (4), the first power supply module (10) and the serial communication module (13), and the serial communication module (13) is in signal connection with the third power supply module (14) and the sensor interface (15); the lithium battery (5) is respectively and electrically connected with the first power supply module (10), the second power supply module (12) and the third power supply module (14); the first power module (10) supplies power to the display screen (4), the third power module (14) supplies power to the sensor to be detected through the sensor interface (15), and the second power module (12) supplies power to the serial communication module (13).

2. A portable sensor testing device according to claim 1, wherein: a power supply reverse connection protection circuit (16) is arranged between the lithium battery (5) and the first power supply module (10), the power supply reverse connection protection circuit (16) is a P-channel MOS (metal oxide semiconductor) tube, and the power supply reverse connection protection circuit (16) is in signal connection with an ADC (analog to digital converter) acquisition circuit, a second power supply module (12) and a third power supply module (14) of the MCU module (11).

3. A portable sensor testing device according to claim 2, wherein: and a power switch circuit (19) is arranged between the power reverse connection protection circuit (16) and the second power module (12) and between the power reverse connection protection circuit and the third power module (14).

4. A portable sensor testing device according to claim 1, wherein: the PCB circuit board (7) is further provided with a buzzer (17), and the MCU module (11) is in signal connection with the buzzer (17).

5. A portable sensor testing device according to claim 1, wherein: the PCB circuit board (7) is further provided with a program downloading interface (18), and the MCU module (11) is in signal connection with the program downloading interface (18).

6. A portable sensor testing device according to claim 1, wherein: the MCU module (11) is a 32-bit microcontroller with an ARM Cortex-M3 kernel.