Sensor signal acquisition system and acquisition device

Abstract

The invention discloses a sensor signal acquisition system, which comprises an all-in-one machine PC and a CRIO system C which are connected with each other, and also comprises a power supply circuit which is respectively connected with the all-in-one machine PC and the CRIO system C; the CRIO system C comprises a CRIO unit, a current signal module, a voltage signal module and a temperature signal module which are connected in sequence; the CRIO unit comprises a CPU module and a communication module which are connected with each other; by arranging a CRIO unit, a current signal module, a voltage signal module and a temperature signal module, synchronous acquisition of voltage type pressure sensors, current type pressure sensors and temperature signals is realized, simultaneous acquisition of signals of four temperature channels, eight current channels and eight voltage channels is realized based on high-speed and high-precision signal acquisition configuration of a CRIO system, and the accuracy of acquisition of the signals of the four temperature channels, the eight current channels and the eight voltage channels is improved. The technical problem that in the prior art, signal testing equipment of a sensor cannot meet experimental testing requirements of various sensors at the same time is solved.

Description

Technical Field

[0001] The present invention belongs to the field of sensors and relates to a signal acquisition device, in particular to a sensor signal acquisition system and an acquisition device. Background Art

[0002] In terms of data acquisition, although digital acquisition equipment can also complete sensor signal testing, sensor testing is generally time-consuming. In addition, digital acquisition has many functions and is complex to configure and operate. It requires professionals to operate and is expensive.

[0003] Therefore, there is an urgent need for a dedicated, low-cost, portable, easy-to-use, and highly versatile sensor testing system to facilitate rapid testing by testers. This system can achieve simultaneous real-time acquisition of multiple temperature, voltage, current, and other sensor signals, meeting the testing needs of various sensor devices, enabling efficient and rapid testing and improving work efficiency. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a sensor signal acquisition system and acquisition device to solve the technical problem that the sensor signal testing equipment in the prior art cannot simultaneously meet the test requirements of multiple sensors.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A sensor signal acquisition system includes an all-in-one PC and a CRIO system C connected together, and also includes a power supply circuit, wherein the power supply circuit is connected to the all-in-one PC and the CRIO system C respectively;

[0007] The CRIO system C includes a CRIO unit, a current signal module, a voltage signal module and a temperature signal module connected in sequence;

[0008] The CRIO unit includes a connected CPU module and a communication module.

[0009] The present invention includes the following technical features:

[0010] The communication module of the all-in-one PC and the CRIO system C is connected via a network cable.

[0011] The power supply circuit includes a circuit breaker F1, a circuit breaker F2, a circuit breaker F3, a button switch S1, a button switch S2, a button switch S3, a power module DP1 and a power module DP2; wherein, one end of the circuit breaker F1 is connected to an external power supply, and the other end of the circuit breaker F1 is connected to one end of the button switch S1, and the other end of the button switch S1 is connected to the power module DP1 and the power module DP2 arranged in parallel, and the power module DP1 is connected to the circuit breaker F2 and the button switch S2 in sequence, and the button switch S2 is connected to the CPU module; the power module DP2 is connected to the circuit breaker F3 and the button switch S3 in sequence, and the button switch S3 is connected to the current signal module and the voltage signal module.

[0012] An X1 DC terminal block is provided between the button switch S2 and the CPU module; an X2 DC terminal block is provided between the button switch S3 and both the current signal module and the voltage signal module.

[0013] The models of the CRIO unit, current signal module, voltage signal module and temperature signal module are NI9042, NI 9203, NI 9201 and NI 9219 respectively.

[0014] The CPU module, communication module, current signal module, voltage signal module and temperature signal module are sequentially connected via parallel connectors.

[0015] A collection device includes a control cabinet, wherein the sensor signal collection system is arranged in the control cabinet, and a plurality of external connection ports connected to the sensor signal collection system are prefabricated on the outer wall of the control cabinet.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] The present invention realizes the synchronous acquisition of voltage-type pressure sensors, current-type pressure sensors and temperature signals by providing a CRIO unit, a current signal module, a voltage signal module and a temperature signal module. Based on the high-speed and high-precision signal acquisition configuration of the CRIO system, the simultaneous acquisition of signals from four temperature channels, eight current channels and eight voltage channels is achieved, solving the technical problem in the prior art that sensor signal testing equipment cannot simultaneously meet the test requirements of multiple sensors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a system topology diagram of the present invention;

[0019] Figure 2 Schematic diagram of the power supply circuit in the present invention;

[0020] Figure 3 Schematic diagram of the structure of the CRIO unit in the present invention;

[0021] Figure 4 This is the wiring diagram of the temperature signal module in the present invention;

[0022] Figure 5 This is a wiring diagram of the voltage signal module in the present invention;

[0023] Figure 6 This is the wiring diagram of the current signal module in the present invention.

[0024] The specific contents of the present invention are further explained in detail below with reference to the embodiments. DETAILED DESCRIPTION

[0025] It should be noted that, unless otherwise specified, all components in the present invention are components known in the art.

[0026] Specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent modifications made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0027] The present invention provides a sensor signal acquisition system, comprising an all-in-one PC and a CRIO system C connected to each other, and also comprising a power supply circuit, wherein the power supply circuit is connected to the all-in-one PC and the CRIO system C respectively;

[0028] The CRIO system C includes a CRIO unit, a current signal module, a voltage signal module, and a temperature signal module connected in sequence;

[0029] The CRIO unit consists of a connected CPU module and a communication module.

[0030] In the above technical solution, by setting up a CRIO unit, a current signal module, a voltage signal module and a temperature signal module, the synchronous acquisition of voltage-type pressure sensors, current-type pressure sensors and temperature signals is realized. Based on the high-speed and high-precision signal acquisition configuration of the CRIO system, the simultaneous acquisition of 4 temperature channels, 8 current channels and 8 voltage channel signals is realized, which solves the technical problem in the existing technology that the signal testing equipment of sensors cannot simultaneously meet the test requirements of multiple sensors.

[0031] In actual collection, Figure 4 As shown in the figure, the temperature sensor plugs X1 to X4 correspond to channels 1 to 4 of the temperature signal module, which can realize the temperature signal acquisition of different types of thermal resistors and thermocouples; Figure 5 As shown in the figure, the voltage sensor plugs X1 to X8 correspond to channels 1 to 8 of the voltage signal module; Figure 6 As shown, the current sensor plugs X1 to X8 correspond to channels 1 to 8 of the current signal module;

[0032] The all-in-one PC and the communication module of CRIO system C are connected via a network cable.

[0033] The power supply circuit includes circuit breaker F1, circuit breaker F2, circuit breaker F3, push button switch S1, push button switch S2, push button switch S3, power module DP1 and power module DP2; wherein, one end of circuit breaker F1 is connected to the external power supply, the other end of circuit breaker F1 is connected to one end of push button switch S1, the other end of push button switch S1 is connected to power module DP1 and power module DP2 arranged in parallel, the power module DP1 is connected to circuit breaker F2 and push button switch S2 in sequence, and the push button switch S2 is connected to the CPU module; the power module DP2 is connected to circuit breaker F3 and push button switch S3 in sequence, and the push button switch S3 is connected to the current signal module and the voltage signal module.

[0034] In the above technical solution, circuit breaker F1 is used to protect the control system to prevent damage to components caused by short circuit or overload; after the button switch S1 is pressed, the power module DP1 and the power module DP2 are powered on; the power module DP1 is an AC220V to DC24V power module, which supplies power to the CPU module of the CRIO unit, and the power module DP2 supplies power to the sensor excitation; after the button switch S2 is pressed, the CPU module of the CRIO unit is powered on, and after the button switch S3 is pressed, the current signal module and voltage signal module of the CRIO system C are powered on, and then the all-in-one PC is powered on.

[0035] An X1 DC terminal block is provided between the push button switch S2 and the CPU module; an X2 DC terminal block is provided between the push button switch S3 and the current signal module and the voltage signal module.

[0036] In the above technical solution, DC24V+ sensor excitation power is provided to voltage type sensor plugs X1 to X8 through terminals 1 to 8# of the X2 DC terminal block, DC24V- sensor excitation power is provided to voltage type sensor plugs X1 to X8 through terminals 11 to 18# of the X2 DC terminal block, and signal negative is provided to channels 1 to 8 of the voltage signal module through terminals 1 to 9# of the X2 DC terminal block.

[0037] Provide DC24V+ sensor excitation power to current sensor plugs X1 to X8 through terminals 1 to 8 of the X2 DC terminal block. Provide DC24V- sensor excitation power to current sensor plugs X1 to X8 through terminals 11 to 18 of the X2 DC terminal block. Provide signal negative power to channels 1 to 8 of the current signal module through terminal 19 of the X2 DC terminal block.

[0038] The models of the CRIO unit, current signal module, voltage signal module and temperature signal module are NI9042, NI 9203, NI 9201 and NI 9219 respectively.

[0039] In the above technical solution, it has been verified through actual measurement that the collection efficiency and accuracy of this series of CRIO units, current signal modules, voltage signal modules and temperature signal modules are relatively good.

[0040] The CPU module, the communication module, the current signal module, the voltage signal module and the temperature signal module are connected in sequence through parallel connectors.

[0041] A collection device comprises a control cabinet, wherein a sensor signal collection system is arranged in the control cabinet, and a plurality of external connection ports connected with the sensor signal collection system are prefabricated on the outer wall of the control cabinet.

Claims

1. A sensor signal acquisition system, comprising an all-in-one PC and a CRIO system C connected together, and a power supply circuit, wherein the power supply circuit is connected to the all-in-one PC and the CRIO system C respectively; The CRIO system C includes a CRIO unit, a current signal module, a voltage signal module and a temperature signal module connected in sequence; The CRIO unit includes a connected CPU module and a communication module.

2. The sensor signal acquisition system according to claim 1, wherein: The communication modules of the all-in-one PC and CRIO system C are connected via a network cable.

3. The sensor signal acquisition system according to claim 1, wherein: The power supply circuit includes a circuit breaker F1, a circuit breaker F2, a circuit breaker F3, a button switch S1, a button switch S2, a button switch S3, a power module DP1 and a power module DP2; wherein, one end of the circuit breaker F1 is connected to an external power supply, and the other end of the circuit breaker F1 is connected to one end of the button switch S1, and the other end of the button switch S1 is connected to the power module DP1 and the power module DP2 arranged in parallel, and the power module DP1 is connected to the circuit breaker F2 and the button switch S2 in sequence, and the button switch S2 is connected to the CPU module; the power module DP2 is connected to the circuit breaker F3 and the button switch S3 in sequence, and the button switch S3 is connected to the current signal module and the voltage signal module.

4. The sensor signal acquisition system according to claim 3, wherein: An X1 DC terminal block is provided between the button switch S2 and the CPU module; an X2 DC terminal block is provided between the button switch S3 and both the current signal module and the voltage signal module.

5. The sensor signal acquisition system according to claim 1, wherein: The models of the CRIO unit, current signal module, voltage signal module and temperature signal module are NI9042, NI 9203, NI 9201 and NI 9219 respectively.

6. The sensor signal acquisition system according to claim 1, wherein: The CPU module, communication module, current signal module, voltage signal module and temperature signal module are sequentially connected via parallel connectors.

7. A collection device, characterized in that: The invention comprises a control cabinet, wherein the sensor signal acquisition system according to any one of claims 1 to 6 is arranged in the control cabinet, and a plurality of external connection ports connected with the sensor signal acquisition system are prefabricated on the outer wall of the control cabinet.

Images