CN203909527U

CN203909527U - Sensor signal simulator

Info

Publication number: CN203909527U
Application number: CN201420069104.3U
Authority: CN
Inventors: 施达明
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-02-18
Filing date: 2014-02-18
Publication date: 2014-10-29
Anticipated expiration: 2024-02-18

Abstract

A sensor signal simulator comprises a single-chip microcomputer module. The single-chip microcomputer module is connected with a liquid crystal display module, a matrix keyboard, and an RS-485 communication module. The single-chip microcomputer module is also connected with a pulse output circuit and a D/A conversion module. The D/A conversion module is connected with a 4-20mA signal-generator. The sensor signal simulator simulates various kinds of output of sensor signals to enable users to easily obtain diversified signal output of needed sensors. The signal characteristics can be obtained through a liquid crystal screen anytime, which is greatly convenient for detection and debug of equipment of other kinds.

Description

A kind of sensor signal simulator

Technical field

A kind of sensor signal simulator of the utility model, for the generation of various sensor output signals, the setting of sensor parameters and data processing and transmission.

Background technology

In modern industry production run, carry out the parameters in monitoring and controlling production run with various sensors, make equipment be operated in normal condition or optimum condition, and make product reach best quality.The application of sensor is penetrated into each branch of industry, and its product doors veriety is various, and principle of work is different.Sensor classification by use mainly contains displacement transducer, pressure transducer, flow sensor, temperature sensor, voltage sensor, current sensor etc., and the output signal of various sensors mainly contains voltage 0-5V, electric current 4-20mA, pulse output and RS-485 digital signal.

In the previous work of scientific experiment and scientific research and development, need sensor signal to debug, completion system test.But now real sensor is not is not also installed and used, even if there has been sensor in kind, be also difficult to obtain the actual signals such as pressure or flow, cannot meet system debug and test, therefore need a kind of sensor signal simulator to send these signals.At present, seldom, and existing product function ratio is more single for sensor signal simulator product, as LOAD CELLS simulator, can only export weigh, several sensor signals such as pressure, moment of torsion.

Summary of the invention

The utility model provides a kind of sensor signal simulator, the various outputs of analog sensor signal, and user can easily obtain the diversified signal output of required sensor.And can by liquid crystal display, obtain signal characteristic at any time, greatly facilitate the detection of other equipment and debugging.

The technical scheme that the utility model is taked is: a kind of sensor signal simulator, comprise one-chip computer module, described one-chip computer module connects LCD MODULE, matrix keyboard, RS-485 communication module, described one-chip computer module connects impulse output circuit, described one-chip computer module connects D/A modular converter, and D/A modular converter connects 4-20mA signal generator.

Described LCD MODULE, matrix keyboard are fixedly mounted on panel, and panel is fixedly connected with housing, and described RS-485 communication module, 4-20mA signal generator, one-chip computer module, D/A modular converter are arranged in housing.

Described housing is provided with a plurality of connection terminals.

Described one-chip computer module adopts MSP430 type single-chip microcomputer.

A kind of sensor signal simulator of the utility model, by matrix keyboard, output parameter and working method are set, by MSP430 Single-chip Controlling D/A modular converter, 4-20mA signal generator or RS-485 communication module, export required sensor signal, and synchronously in LCD MODULE, show.The utility model can analog sensor signal various outputs, user can easily obtain the diversified signal output of required sensor, and can by liquid crystal display, obtain signal characteristic at any time, greatly facilitates the detection of other equipment and debugging.

Accompanying drawing explanation

Fig. 1 is a kind of sensor signal simulator schematic block circuit diagram of the utility model.

Fig. 2 is the utility model panel construction schematic diagram.

Fig. 3 is the utility model shell structure schematic diagram.

Embodiment

As shown in Fig. 1 ~ Fig. 3, a kind of sensor signal simulator, comprises one-chip computer module, and described one-chip computer module adopts MSP430 type single-chip microcomputer.Described one-chip computer module connects LCD MODULE 3, matrix keyboard 4, RS-485 communication module, and described one-chip computer module connects impulse output circuit, and described one-chip computer module connects D/A modular converter, and D/A modular converter connects 4-20mA signal generator.Described LCD MODULE 3, matrix keyboard 4 are fixedly mounted on panel 1, and panel 1 is fixedly connected with housing 2, and described RS-485 communication module, 4-20mA signal generator, one-chip computer module, D/A modular converter are arranged in housing 2.Circuit board 6, battery 7 are arranged on housing 2.

Described housing 2 is provided with a plurality of connection terminals 5, as shown in Figure 3: being 1. RS-485 "+", is 2. RS-485 "-", 3. being 4-20mA signal generator "+", is 4. 4-20mA signal generator "-", is 5. pulse output end, 6. being DC24V "+", is 7. GND end.

A kind of sensor signal simulator of the utility model, can realize the simulation output of multiple sensors signal.Can multiple output mode be set by matrix keyboard 4, as: Voltage-output, electric current output, digital signal output, output of pulse signal.

The multi-signal amounts such as pressure, flow, displacement, temperature can be simulated, and measurement range and step-length can be adjusted arbitrarily.When the simulation output of sensor signal, can check at any time by LCD MODULE 3 various features of output signal.

The major function of sensor simulator unit is the sensor signal of the various standards of output, and sensor simulator unit has two kinds of modes that output signal value is set, i.e. stepping output and numerical key directly arrange.

Stepping output function mode: switch to this way of output by function key, under this state, often press once " increase " key, output increases a step value, until spiking output; Often press once " reducing " key, output reduces a step value, until output signal is minimum value.Step value can be pressed setting, numerical key, acknowledgement key modification.

The direct set-up mode of numerical key: press function key and just can enter the direct set-up mode of numerical key, display screen shows " P1 0.0000 ", and " P1 " represents direct set-up mode, and " 0.0000 " represents that current output signal is 0.After input numeral, press " confirmation " key, by the setting value output signal of input.If input value is greater than maximal value, output signal maximal value.

Press the changeable output mode of output mode key, take Voltage-output as example, the signal parameter that needs simulation can be set while being switched to this pattern, as flow, and use numeric key input signals scope, and as 0-10MPa, the output signal value that after determining, voltage output end is set output: 0-5V.

Claims

1. a sensor signal simulator, comprise one-chip computer module, it is characterized in that, described one-chip computer module connects LCD MODULE (3), matrix keyboard (4), RS-485 communication module, described one-chip computer module connects impulse output circuit, described one-chip computer module connects D/A modular converter, and D/A modular converter connects 4-20mA signal generator; Described LCD MODULE (3), matrix keyboard (4) are fixedly mounted on panel (1), panel (1) is fixedly connected with housing (2), and described RS-485 communication module, 4-20mA signal generator, one-chip computer module, D/A modular converter are arranged in housing (2); Described housing (2) is provided with a plurality of connection terminals (5); Described one-chip computer module adopts MSP430 type single-chip microcomputer.