CN211452682U

CN211452682U - Torque digital display instrument for receiving sensor digital signal

Info

Publication number: CN211452682U
Application number: CN201922400137.7U
Authority: CN
Inventors: 冯俊杰; 刘华; 陈艳丽; 李华栋; 徐峰; 严军辉; 张振平
Original assignee: Avic Shaanxi Dongfang Aviation Instrument Co ltd
Current assignee: Avic Shaanxi Dongfang Aviation Instrument Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-09-08
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a receive sensor digital signal's moment of torsion digital display appearance, including instrument box and display screen and the facial mask switch of setting in instrument box the place ahead, instrument box's rear is provided with switch, signal interface, USB interface, power source and RS232 interface, is provided with the CPU who is used for the operation in the instrument box, and display screen, signal interface and facial mask switch all are connected with CPU, and CPU still is connected with the PC. The problem of exist among the prior art signal transmission decay seriously, influence the accuracy of indicating value is solved.

Description

Torque digital display instrument for receiving sensor digital signal

Technical Field

The utility model belongs to the technical field of the moment of torsion detects, a receive sensor digital signal's moment of torsion digital display appearance is related to.

Background

At present, the torque digital display instruments on the market are more, but all are the torque digital display instruments for receiving the analog signals of the sensors, and the torque digital display instruments have the following problems: 1 because the analog signal of sensor output is less, when transmitting to moment of torsion digital display appearance through the cable, easily receive the interference, influence the registration accuracy. 2 because the analog signal that the sensor output is less, when the sensor is far away with moment of torsion digital display appearance, long distance transmission, signal attenuation is great, influences the indicating value accuracy.

Disclosure of Invention

The utility model aims at providing a receive sensor digital signal's moment of torsion digital display appearance has solved and has had the signal transmission decay among the prior art serious, influences the problem of indicating value accuracy.

The utility model provides a technical scheme who adopts is, a torque digital display instrument who receives sensor digital signal, a serial communication port, including instrument box and display screen and the facial mask switch of setting in instrument box the place ahead, instrument box's rear is provided with switch, signal interface, USB interface, power source and RS232 interface, is provided with the CPU who is used for the operation in the instrument box, and display screen, signal interface and facial mask switch all are connected with CPU, and CPU still is connected with the PC.

The utility model is also characterized in that,

the signal interface is connected with an external digital sensor through a sensor connecting cable, and signal transmission is carried out in a 485 communication mode.

The CPU is also connected with the PC through a USB interface or an RS232 interface and used for outputting or storing a result obtained after the CPU calculates.

And the mask switch is used for inputting or selecting information by a user.

The display screen is used for man-machine interaction and displaying information such as torque values, units, working modes and the like.

The power supply interface is an alternating current power supply interface, the rated voltage is 220V, and the frequency is 50 Hz.

The beneficial effects of the utility model are that, the moment of torsion digital display appearance is connected with digital sensor, the analog signal of output has just been enlargied in the inside circuit of sensor from digital sensor, the small analog signal of having avoided because sensor output receives the interference easily when directly transmitting to the moment of torsion digital display appearance through the cable, the decay, influence the drawback of indicating value accuracy, and the mode that adopts the 485 communication between digital torque sensor and the moment of torsion digital display appearance of receiving digital signal carries out data transmission, adopt the 485 communication can satisfy remote transmission's requirement, so can prevent the unstable problem that influences the accuracy of data transmission because the distance problem arouses when using.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a schematic diagram of the back structure of the present invention.

Fig. 3 is a schematic structural diagram of the functional modules of the present invention.

Fig. 4 is a schematic diagram of the USB interface of the present invention.

Fig. 5 is a schematic diagram of the signal interface of the present invention.

Fig. 6 is a schematic diagram of the RS232 interface of the present invention.

In the figure, 1, a display screen, 2, a mask switch, 3, an instrument box, 4, a signal interface, 5, a power interface, 6, a power switch, 7, a USB interface, 8, an RS232 interface, 9, a CPU and 10, a PC.

Detailed Description

The technical solution of the present invention is described clearly and completely with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, the utility model discloses an instrument box 3 and display screen 1 and the facial film switch 2 of setting in instrument box 3 the place ahead, the rear of instrument box 3 is provided with switch 6, signal interface 4, USB interface 7, power source 5 and RS232 interface 8.

The power interface 5 is an alternating current interface with the voltage of 220V and the frequency of 50 Hz.

The schematic diagram of the USB interface 7 is shown in fig. 4, and the schematic diagram of the RS232 interface 8 is shown in fig. 6.

The signal interface 4 adopts a 485 communication mode, and a schematic diagram of the signal interface 4 is shown in fig. 5.

The internal module structure of the digital display instrument is shown in fig. 3, and comprises a CPU9 connected with a display screen 1 and a signal interface 4.

The CPU9 is also connected to the signal interface 4 and the mask switch 2.

The CPU9 is connected to the external PC 10.

The transmission mode adopted by the signal interface 4 is 485 communication mode, and a specific interface schematic diagram is shown in fig. 5.

The digital display instrument is connected with the digital torque sensor through a signal interface 4, a circuit is arranged in the digital sensor, when the digital torque sensor receives torque applied by a detected torque tool, the torque signal is converted into an electric signal by the circuit in the sensor, the electric signal is amplified and subjected to AD conversion by the circuit in the sensor, the converted digital signal is transmitted to the digital display instrument through the signal interface 4 in a 485 communication mode, the digital display instrument receives the digital signal transmitted by the sensor through the signal interface 4 and then calculates the data through a CPU9, and the data is displayed on the display screen 1 in a torque value mode according to a unit and a mode set by a user through a mask switch, so that the torque value applied by the detected torque tool is detected and read in real time.

By adopting the detection and data transmission mode, the analog signal output by the sensor is amplified in the circuit inside the sensor, and the defect that the accuracy of the indicating value is influenced because the small analog signal output by the sensor is easily interfered and attenuated when being directly transmitted to the torque digital display instrument through a cable is avoided. Data transmission is carried out between the digital torque sensor and the digital torque display instrument for receiving the digital signals in a 485 communication mode, the 485 communication is adopted, the 485 communication can meet the requirement of long-distance transmission, the common transmission distance can reach more than 1000 meters, and in practical application, the digital torque sensor and the digital torque display instrument for receiving the digital signals are generally distributed in 3-5 meters, so that the transmission mode can far meet the transmission distance requirement in use.

In practical applications, it is often necessary to read the detection data in real time, and also to upload the detection data to a PC for storage or print a detection report after detecting the torque value applied by the detected torque tool. For the convenience of customer option, the utility model discloses a digital display instrument is provided with two kinds of interfaces of USB and RS232, and the user can select to communicate with the PC through any one of them communication mode according to the condition of self equipment, with data upload to the PC and save or print the report.

The instrument box of the utility model is used for installing a signal interface, a CPU, a display screen and a mask switch; the signal interface is used for communicating with the sensor, receiving a digital signal sent by the sensor, transmitting the signal to the CPU, and then the CPU is used for calculating the digital signal received by the signal interface, converting the digital signal into a torque value and displaying the torque value on the display screen; the display screen is used for man-machine interaction and displaying information such as torque values, units, working modes and the like; the mask switch is used for controlling the instrument by a user, such as inputting information or selecting information, selecting units or setting different working modes according to different use environments and requirements.

The utility model discloses when using, pass through the cable with digital sensor and be connected, when the digital signal that the sensor sent is received through 485 communication interfaces to the digital display appearance of moment of torsion, calculate digital signal through moment of torsion numerical control board, convert digital signal into the torque value to show through the display screen on the digital display appearance of moment of torsion.

The utility model discloses at the during operation, be connected with digital sensor through the sensor connection cable, the data that digital sensor detected are passed through the connecting wire and are input the moment of torsion digital display appearance in, utilize the inside chip of digital display appearance to convert digital signal, obtain the moment of torsion value after, display screen through on the digital display appearance shows, the person of facilitating the use reading, also can export the data value to PC storage or printing report after being connected with outside PC through USB interface or RS232 interface simultaneously.

Claims

1. The utility model provides a receive sensor digital signal's moment of torsion digital display appearance, a serial communication port, including instrument box (3) and display screen (1) and facial mask switch (2) of setting in instrument box (3) the place ahead, the rear of instrument box (3) be provided with switch (6), signal interface (4), USB interface (7), power source (5) and RS232 interface (8), instrument box (3) in be provided with CPU (9) that are used for the operation, display screen (1), signal interface (4) and facial mask switch (2) all be connected with CPU (9), CPU (9) still be connected with PC (10).

2. The digital torque indicator for receiving the digital signals of the sensor according to claim 1, wherein the signal interface (4) is connected with an external digital sensor through a sensor connecting cable, and signal transmission is performed in a 485 communication mode.

3. The digital torque indicator for receiving the sensor digital signals according to claim 1, characterized in that the CPU (9) is further connected with a PC (10) through a USB interface (7) or an RS232 interface (8) and is used for outputting or storing a result obtained after the operation of the CPU (9).

4. The digital torque indicator receiving the sensor digital signal according to claim 1, characterized in that the mask switch (2) is used for user input or selection information.

5. The digital torque display instrument for receiving the sensor digital signals according to claim 1, characterized in that the display screen (1) is used for man-machine interaction and displaying information such as torque values, units, working modes and the like.

6. The digital torque indicator for receiving the digital signals of the sensor according to claim 1, wherein the power interface (5) is an alternating current power interface, the rated voltage is 220V, and the frequency is 50 Hz.