Quality detection device for sensor and actuator

Abstract

The utility model provides a quality detection device for a sensor and an actuator, which is characterized in that different types of equipment to be detected and different signal types of the equipment to be detected are displayed through a touch screen, an input signal is input to a PLC (Programmable Logic Controller) control module, and a detection result of the equipment to be detected is received and displayed based on a display signal; the PLC control module is used for receiving an input signal and processing the input signal to obtain a recognizable control signal, sending the recognizable control signal to the intermediate relay, receiving a signal to be detected and outputting a display signal to the touch screen based on the signal to be detected; the recognizable control signals are received through the intermediate relay, and on-off of different signals is controlled; the switching power supply supplies power to the PLC control module, the intermediate relay and the equipment to be detected; the to-be-detected equipment is connected with the switching power supply through the wiring terminal strip, and the to-be-detected equipment is connected with the PLC control module. The device is easy and convenient to operate, and damage to equipment to be detected during detection is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of quality inspection, in particular to a quality inspection device for sensors and actuators. Background Art

[0002] Industrial sensors and industrial actuators play a crucial role in industrial control and are widely used. Therefore, it is necessary for application manufacturers to conduct quality inspections on industrial sensors and industrial actuators before leaving the factory.

[0003] Quality inspection requires professional equipment and tools. However, current equipment and tools usually require certain professional capabilities for operation, and different detection equipment and tools are generally needed for industrial sensors and industrial actuators. This not only makes the operation inconvenient, but also may cause damage to the equipment to be detected during the detection process when the detection personnel are not professional enough or there are oversights during the detection. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a quality inspection device for sensors and actuators to improve the simplicity of quality inspection and avoid damage to the equipment to be detected during the detection process due to insufficient professionalism of the detection personnel or oversights during the detection.

[0005] The embodiment of the utility model provides a quality inspection device for sensors and actuators. The device includes: a touch screen, a programmable logic controller (PLC) control module, a intermediate relay, a switching power supply, and a terminal block; the touch screen is used to display different types of the equipment to be detected and different signal types of the equipment to be detected for selection, and input the input signal generated after selection into the PLC control module; receive the display signal output by the PLC control module, and display the detection result of the equipment to be detected based on the display signal; the PLC control module is used to receive the input signal, perform logical processing on the input signal to obtain an identifiable control signal; send the identifiable control signal to the intermediate relay; receive the signal to be detected corresponding to the equipment to be detected; perform quality inspection processing based on the signal to be detected to obtain a detection result; output a display signal to the touch screen based on the detection result; the intermediate relay is used to receive the identifiable control signal, control the on-off of different signals based on the identifiable control signal, and isolate different signals; the switching power supply is used to supply power to the PLC control module, the intermediate relay, and the equipment to be detected; the terminal block is used to connect the equipment to be detected to the switching power supply, and connect the equipment to be detected to the PLC control module.

[0006] In a preferred embodiment of the present utility model, the display signals include: a first display signal and a second display signal; the PLC control module includes: a central processing unit CPU module, a digital input signal DI module, a digital output signal DO module, an analog input signal AI module, and an analog output signal AO module; the CPU module is configured to receive input signals and perform logical processing on the input signals to obtain recognizable control signals; send the recognizable control signals to an intermediate relay for signal on / off adjustment by the intermediate relay; the DI module is configured to receive a signal to be detected corresponding to the device to be detected based on the signal on / off adjustment performed by the intermediate relay; convert the signal to be detected to obtain a first recognizable digital signal; input the first recognizable digital signal into the CPU module; the CPU module is further configured to receive the first recognizable digital signal and perform quality detection processing on the first recognizable digital signal to obtain a first control signal; input the first control signal into the DO module; the DO module is configured to receive the first control signal and convert the first control signal to obtain a first display signal, and input the first display signal into the touch screen; the AI module is configured to receive a signal to be detected corresponding to the device to be detected based on the signal on / off adjustment performed by the intermediate relay, and convert the signal to be detected to obtain a second recognizable digital signal; input the second recognizable digital signal into the CPU module; the CPU module is further configured to receive the second recognizable digital signal and perform quality detection processing on the second recognizable digital signal to obtain a second control signal; input the second control signal into the AO module; the AO module is configured to receive the second control signal and convert the second control signal to obtain a second display signal, and input the second display signal into the touch screen.

[0007] In a preferred embodiment of the present utility model, the terminal block includes: an analog input signal AI terminal block, a digital input signal DI terminal block, an analog output signal AO terminal block, and a digital output signal DO terminal block; the CPU module is connected to the touch screen through a network cable; the AI module is connected to the corresponding AI terminal block after being converted by an intermediate relay; based on the signal on / off adjustment performed by the intermediate relay, the AI terminal block is connected to the device to be detected; the DI module is connected to the corresponding DI terminal block after being converted by an intermediate relay; based on the signal on / off adjustment performed by the intermediate relay, the DI terminal block is connected to the device to be detected; the AO module is connected to the AO terminal block; the AO terminal block is connected to the corresponding device to be detected; the DO module is connected to the DO terminal block; the DO terminal block is connected to the corresponding device to be detected.

[0008] In a preferred embodiment of the present utility model, the device to be detected includes: 2-wire analog input sensors, 3-wire analog input sensors, 4-wire analog input sensors; 2-wire digital input sensors, 3-wire digital input sensors, 4-wire digital input sensors; analog output actuators; digital output actuators; the intermediate relays include: a first intermediate relay, a second intermediate relay, a third intermediate relay, and a fourth intermediate relay.

[0009] In a preferred embodiment of the present utility model, when the device to be detected is a 2-wire analog input sensor, both the first intermediate relay and the second intermediate relay are de-energized. The positive power line of the 2-wire analog input sensor is connected to the 1st terminal of the AI terminal block, and the positive signal line of the 2-wire analog input sensor is connected to the 3rd terminal of the AI terminal block.

[0010] In a preferred embodiment of the present utility model, when the device to be detected is a 3-wire analog input sensor, the first intermediate relay is energized and the second intermediate relay is de-energized. The positive power line of the 3-wire analog input sensor is connected to the 1st terminal of the AI terminal block, the negative power line of the 3-wire analog input sensor is connected to the 2nd terminal of the AI terminal block for budgeting, and the positive signal line of the 3-wire analog input sensor is connected to the 3rd terminal of the AI terminal block.

[0011] In a preferred embodiment of the present utility model, when the device to be detected is a 4-wire analog input sensor, both the first intermediate relay and the second intermediate relay are energized. The positive power line of the 4-wire analog input sensor is connected to the 1st terminal of the AI terminal block, the negative power line of the 4-wire analog input sensor is connected to the 2nd terminal of the AI terminal block, the positive signal line of the 4-wire analog input sensor is connected to the 3rd terminal of the AI terminal block, and the negative signal line of the 4-wire analog input sensor is connected to the 4th terminal of the AI terminal block.

[0012] In a preferred embodiment of the present utility model, when the device to be detected is a 2-wire digital input sensor, the third intermediate relay is de-energized and the fourth intermediate relay is energized. The common line of the 2-wire digital input sensor is connected to the 3rd terminal of the DI terminal block, and the signal line of the 2-wire digital input sensor is connected to the 4th terminal of the DI terminal block.

[0013] In a preferred embodiment of the present utility model, when the device to be detected is a 3-wire digital input sensor, the third intermediate relay is energized and the fourth intermediate relay is de-energized. The positive power line of the 3-wire digital input sensor is connected to the 2nd terminal of the DI terminal block, and the signal line of the 3-wire digital input sensor is connected to the 4th terminal of the DI terminal block.

[0014] In a preferred embodiment of the present utility model, when the device to be detected is a 4-wire digital input sensor, both the third intermediate relay and the fourth intermediate relay are energized. The positive power line of the 4-wire digital input sensor is connected to the No. 1 terminal of the DI terminal block, the negative power line of the 4-wire digital input sensor is connected to the No. 2 terminal of the DI terminal block, the common line of the 4-wire digital input sensor is connected to the No. 3 terminal of the DI terminal block, and the signal line of the 4-wire digital input sensor is connected to the No. 4 terminal of the DI terminal block.

[0015] In a preferred embodiment of the present utility model, when the device to be detected is an analog output actuator, the positive signal line of the analog output actuator is connected to the No. 1 terminal of the AO terminal block, and the negative signal line of the analog output actuator is connected to the No. 2 terminal of the AO terminal block.

[0016] In a preferred embodiment of the present utility model, when the device to be detected is a digital output actuator, the positive signal line of the digital output actuator is connected to the No. 1 terminal of the DO terminal block, and the negative signal line of the digital output actuator is connected to the No. 2 terminal of the DO terminal block.

[0017] The embodiments of the present utility model bring the following beneficial effects:

[0018] The embodiments of the present utility model provide a quality detection device for sensors and actuators. The device includes: a touch screen, a programmable logic controller PLC control module, intermediate relays, a switching power supply, and a terminal block; the touch screen is used to display different types of the device to be detected and different signal types of the device to be detected for selection, and input the input signal generated after selection into the PLC control module, receive the display signal output by the PLC control module, and display the detection result of the device to be detected based on the display signal; the PLC control module receives the input signal, performs logical processing on the input signal to obtain an identifiable control signal, sends the identifiable control signal to the intermediate relay, receives the signal to be detected corresponding to the device to be detected, performs quality detection processing based on the signal to be detected to obtain a detection result, and outputs a display signal to the touch screen based on the detection result; the intermediate relay receives the identifiable control signal, controls the on / off of different signals based on the identifiable control signal, and isolates different signals; the switching power supply supplies power to the PLC control module, the intermediate relay, and the device to be detected; the terminal block connects the device to be detected to the switching power supply, and connects the device to be detected to the PLC control module. The device is not only easy to operate, but also can fundamentally prevent the damage of the device to be detected during the detection process due to insufficient professionalism of the detection personnel or negligence during detection.

[0019] Other features and advantages of the present disclosure will be set forth in the following description, or can be inferred from the description or be definitely determined without doubt, or can be learned through implementing the above technologies of the present disclosure.

[0020] To make the above objects, features and advantages of the present disclosure more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. Description of the Drawings

[0021] To more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Structural diagram of a quality detection device for a sensor and an actuator provided by an embodiment of the present utility model;

[0023] Figure 2 Overall structural diagram of a quality detection device for a sensor and an actuator provided by an embodiment of the present utility model;

[0024] Figure 3 Connection diagram of a 2-wire analog input sensor and an AI terminal block provided by an embodiment of the present utility model;

[0025] Figure 4 Connection diagram of a 3-wire analog input sensor and an AI terminal block provided by an embodiment of the present utility model;

[0026] Figure 5 Connection diagram of a 4-wire analog input sensor and an AI terminal block provided by an embodiment of the present utility model;

[0027] Figure 6 Connection diagram of a 2-wire digital input sensor and a DI terminal block provided by an embodiment of the present utility model;

[0028] Figure 7 Connection diagram of a 3-wire digital input sensor and a DI terminal block provided by an embodiment of the present utility model;

[0029] Figure 8 Connection diagram of a 4-wire digital input sensor and a DI terminal block provided by an embodiment of the present utility model;

[0030] Figure 9 Connection diagram of an analog output actuator and an AO terminal block provided by an embodiment of the present utility model;

[0031] Figure 10 This is a connection diagram of a digital quantity output actuator and a DO terminal block provided by an embodiment of the present utility model.

[0032] Illustration:

[0033] 10 - Touch screen; 20 - PLC control module; 30 - Intermediate relay; 40 - Switching power supply; 50 - Terminal block; 60 - Device to be detected; 21 - CPU module; 22 - DI module; 23 - DO module; 24 - AI module; 25 - AO module; KA1 - First intermediate relay; KA2 - Second intermediate relay; KA3 - Third intermediate relay; KA4 - Fourth intermediate relay; 51 - AI terminal block; 52 - DI terminal block; 53 - AO terminal block; 54 - DO terminal block; 61 - 2 - wire analog quantity input sensor; 62 - 3 - wire analog quantity input sensor; 63 - 4 - wire analog quantity input sensor; 64 - 2 - wire digital quantity input sensor; 65 - 3 - wire digital quantity input sensor; 66 - 4 - wire digital quantity input sensor; 67 - Analog quantity output actuator; 68 - Digital quantity output actuator. Specific implementation manners

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] Industrial sensors and industrial actuators play a crucial role in industrial control and are widely used. Therefore, it is necessary for application manufacturers to conduct quality inspections on industrial sensors and industrial actuators before leaving the factory.

[0036] Conducting quality inspections requires professional equipment and professional detection tools. However, the current equipment and tools usually require a certain level of professional ability for operation, and different detection equipment and tools are usually required for industrial sensors and industrial actuators. This is not only inconvenient to operate, but also may cause damage to the device to be detected during the detection process when the detection personnel are not professional enough or there are oversights during the detection.

[0037] Based on this, a quality detection device for sensors and actuators provided by an embodiment of the present utility model displays different types of devices to be detected and different signal types of the devices to be detected through a touch screen for selection, inputs the input signal generated after selection into the PLC control module, receives the display signal output by the PLC control module, and displays the detection result of the device to be detected based on the display signal; the PLC control module receives the input signal and performs logical processing on the input signal to obtain an identifiable control signal, sends the identifiable control signal to the intermediate relay, receives the signal to be detected corresponding to the device to be detected, performs quality detection processing based on the signal to be detected to obtain a detection result, and outputs a display signal to the touch screen based on the detection result; the intermediate relay receives the identifiable control signal, controls the on / off of different signals based on the identifiable control signal, and isolates different signals; the switching power supply supplies power to the PLC control module, the intermediate relay, and the device to be detected; the device to be detected is connected to the switching power supply through a terminal block, and the device to be detected is connected to the PLC control module. This device is not only easy to operate, but also can fundamentally prevent the damage of the device to be detected during the detection process due to insufficient professionalism of the detection personnel or negligence during detection.

[0038] To facilitate the understanding of this embodiment, a quality detection device for sensors and actuators disclosed by an embodiment of the present utility model will be introduced in detail first.

[0039] Embodiment 1

[0040] An embodiment of the present utility model provides a quality detection device for sensors and actuators, Figure 1 which is a structural diagram of a quality detection device for sensors and actuators provided by an embodiment of the present utility model.

[0041] As Figure 1 shown, the quality detection device for sensors and actuators may include the following structure:

[0042] Touch screen 10, programmable logic controller PLC control module 20, intermediate relay 30, switching power supply 40, and terminal block 50.

[0043] Specifically, the touch screen 10 is used to display different types of the device to be detected 60 and different signal types of the device to be detected 60 for selection, and input the input signal generated after selection into the PLC control module 20; receive the display signal output by the PLC control module 20, and display the detection result of the device to be detected 60 based on the display signal.

[0044] Among them, the device 60 to be detected includes: 2-wire analog input sensors, 3-wire analog input sensors, 4-wire analog input sensors; 2-wire digital input sensors, 3-wire digital input sensors, 4-wire digital input sensors; analog output actuators; digital output actuators.

[0045] For example, the tester can select the device 60 to be detected as a 2-wire analog input sensor on the touch screen 10. At this time, the corresponding input signal will be input to the PLC control module 20. The PLC control module 20 will issue corresponding instructions to the intermediate relay 30 to adjust the on / off of the circuit to ensure the normal detection of the 2-wire analog input sensor. After the detection is completed, the corresponding signal to be detected will be converted into a display signal recognizable by the touch screen 10 for the touch screen 10 to display relevant detection data based on this display signal.

[0046] Specifically, the PLC control module 20 is configured to receive an input signal, perform logical processing on the input signal to obtain a recognizable control signal; send the recognizable control signal to the intermediate relay 30; receive the signal to be detected corresponding to the device 60 to be detected; perform quality detection processing based on the signal to be detected to obtain a detection result; output a display signal to the touch screen 10 based on the detection result.

[0047] Among them, the display signal includes: a first display signal and a second display signal. The first display signal will pass through the intermediate relay 30, and the second display signal will not pass through the intermediate relay 30.

[0048] Specifically, the intermediate relay 30 is configured to receive the recognizable control signal, control the on / off of different signals based on the recognizable control signal, and isolate different signals.

[0049] Among them, the intermediate relay 30 includes: a first intermediate relay, a second intermediate relay, a third intermediate relay, and a fourth intermediate relay.

[0050] Specifically, the switching power supply 40 is used to supply power to the PLC control module 20, the intermediate relay 30, and the device to be detected.

[0051] Among them, the switching power supply 40 is a DC24V switching power supply 40, which provides a 24V DC working power supply and power distribution.

[0052] Specifically, the terminal block 50 is used to connect the device to be detected to the switching power supply 40, and to connect the device to be detected to the PLC control module 20.

[0053] Among them, the terminal block 50 may include: an analog input signal AI terminal block, a digital input signal DI terminal block, an analog output signal AO terminal block, and a digital output signal DO terminal block.

[0054] The quality detection device for sensors and actuators provided by the embodiment of the present utility model can display different types of devices to be detected and different signal types of the devices to be detected through a touch screen for selection, input the input signal generated after selection into the PLC control module, receive the display signal output by the PLC control module, and display the detection result of the device to be detected based on the display signal; receive the input signal through the PLC control module, perform logical processing on the input signal to obtain an identifiable control signal, send the identifiable control signal to the intermediate relay, receive the signal to be detected corresponding to the device to be detected, perform quality detection processing based on the signal to be detected to obtain a detection result, and output a display signal to the touch screen based on the detection result; receive the identifiable control signal through the intermediate relay, control the on / off of different signals based on the identifiable control signal, and isolate different signals; supply power to the PLC control module, the intermediate relay, and the device to be detected through a switching power supply; connect the device to be detected to the switching power supply through a terminal block, and connect the device to be detected to the PLC control module. This device is not only easy to operate, but also can fundamentally prevent the damage of the device to be detected during the detection process due to insufficient professionalism of the detection personnel or negligence during detection.

[0055] Embodiment 2

[0056] The embodiment of the present utility model also provides a quality detection device for sensors and actuators; this quality detection device for sensors and actuators is implemented on the basis of the above embodiment, specifically describes the composition of the PLC control module and the terminal block, and the overall connection relationship of the quality detection device for sensors and actuators.

[0057] Figure 2 It is the overall structure diagram of a quality detection device for sensors and actuators provided by the embodiment of the present utility model. As Figure 2 shown, the PLC control module may include the following structure: a central processing unit CPU module 21, a digital input signal DI module 22, a digital output signal DO module 23, an analog input signal AI module 24, and an analog output signal AO module 25.

[0058] Specifically, the CPU module 21 is used to receive the input signal, perform logical processing on the input signal to obtain an identifiable control signal; and send the identifiable control signal to the intermediate relay 30 for the intermediate relay 30 to adjust the signal on / off.

[0059] Among them, the intermediate relay 30 includes: a first intermediate relay KA1, a second intermediate relay KA2, a third intermediate relay KA3, and a fourth intermediate relay KA4.

[0060] Specifically, the DI module 22 is configured to receive a signal to be detected corresponding to the device 60 to be detected based on the signal on / off adjustment performed by the intermediate relay 30; convert the signal to be detected to obtain a first recognizable digital signal; and input the first recognizable digital signal into the CPU module 21.

[0061] Specifically, the CPU module 21 is further configured to receive the first recognizable digital signal, perform quality detection processing on the first recognizable digital signal to obtain a first control signal; and input the first control signal into the DO module 23.

[0062] Specifically, the DO module 23 is configured to receive the first control signal, convert the first control signal to obtain a first display signal, and input the first display signal into the touch screen 10.

[0063] Specifically, the AI module 24 is configured to receive a signal to be detected corresponding to the device 60 to be detected based on the signal on / off adjustment performed by the intermediate relay 30, convert the signal to be detected to obtain a second recognizable digital signal; and input the second recognizable digital signal into the CPU module 21.

[0064] Specifically, the CPU module 21 is further configured to receive the second recognizable digital signal, perform quality detection processing on the second recognizable digital signal to obtain a second control signal; and input the second control signal into the AO module 25.

[0065] Specifically, the AO module 25 is configured to receive the second control signal, convert the second control signal to obtain a second display signal, and input the second display signal into the touch screen 10.

[0066] As Figure 2 shown, the terminal block 50 includes the following structures: an analog input signal AI terminal block 51, a digital input signal DI terminal block 52, an analog output signal AO terminal block 53, and a digital output signal DO terminal block 54.

[0067] Specifically, the CPU module 21 is connected to the touch screen 10 through a network cable; the AI module 24 is connected to the corresponding AI terminal block 51 after being converted by the intermediate relay 30; based on the signal on / off adjustment performed by the intermediate relay 30, the AI terminal block 51 is connected to the device 60 to be detected; the DI module 22 is connected to the corresponding DI terminal block 52 after being converted by the intermediate relay 30; based on the signal on / off adjustment performed by the intermediate relay 30, the DI terminal block 52 is connected to the device 60 to be detected; the AO module 25 is connected to the AO terminal block 53; the AO terminal block 53 is connected to the corresponding device 60 to be detected; the DO module 23 is connected to the DO terminal block 54; and the DO terminal block 54 is connected to the corresponding device 60 to be detected.

[0068] For different devices 60 to be detected, there are different connection methods. For the convenience of understanding, Figure 3 FIG. Figure 3 is a connection diagram of a two-wire analog input sensor and an AI terminal block provided by an embodiment of the present invention, as Figure 3 shown:

[0069] When the device 60 to be detected is a two-wire analog input sensor 61, both the first intermediate relay KA1 and the second intermediate relay KA2 are de-energized. The positive power line of the two-wire analog input sensor 61 is connected to the 1st terminal of the AI terminal block 51, and the positive signal line of the two-wire analog input sensor 61 is connected to the 3rd terminal of the AI terminal block 51.

[0070] Among them, after selecting the two-wire analog input sensor 61 through the touch screen 10 and setting the range of the two-wire analog input sensor 61, the PLC control module 20 controls the first intermediate relay KA1 to be de-energized and controls the second intermediate relay KA2 to be de-energized. The circuit switches to the detection mode of the two-wire analog input sensor 61, and then the two-wire analog input sensor 61 is connected in the above manner. After connection, the touch screen 10 can display the detected real-time value, and this real-time value can be compared with the pre-set standard value. If they are the same, it can be considered that the two-wire analog input sensor 61 is normal. If they are not the same, it can be considered that the two-wire analog input sensor 61 is abnormal.

[0071] Figure 4 FIG. Figure 4 is a connection diagram of a three-wire analog input sensor and an AI terminal block provided by an embodiment of the present invention, as Figure 4 shown:

[0072] When the device 60 to be detected is a three-wire analog input sensor 62, the first intermediate relay KA1 is energized, and the second intermediate relay KA2 is de-energized. The positive power line of the three-wire analog input sensor 62 is connected to the 1st terminal of the AI terminal block 51, the negative power line of the three-wire analog input sensor 62 is connected to the 2nd terminal of the AI terminal block 51, and the positive signal line of the three-wire analog input sensor 62 is connected to the 3rd terminal of the AI terminal block 51.

[0073] Among them, after selecting the three-wire analog input sensor 62 through the touch screen 10 and setting the measuring range of the three-wire analog input sensor 62, the PLC control module 20 controls the first intermediate relay KA1 to be energized and the second intermediate relay KA2 to be de-energized, and the circuit switches to the detection mode of the three-wire analog input sensor 62. Then, the three-wire analog input sensor 62 is connected in the above manner. After the connection, the touch screen 10 can display the detected real-time value, and this real-time value can be compared with the pre-set standard value. If they are the same, it can be considered that the three-wire analog input sensor 62 is normal; if not, it can be considered that the three-wire analog input sensor 62 is abnormal.

[0074] Figure 5 The following is a connection diagram of a four-wire analog input sensor and an AI terminal block provided by an embodiment of the present invention, as Figure 5 shown:

[0075] When the device to be detected 60 is a four-wire analog input sensor 63, both the first intermediate relay KA1 and the second intermediate relay KA2 are energized. The positive power line of the four-wire analog input sensor 63 is connected to the 1st terminal of the AI terminal block 51, the negative power line of the four-wire analog input sensor 63 is connected to the 2nd terminal of the AI terminal block 51, the positive signal line of the four-wire analog input sensor 63 is connected to the 3rd terminal of the AI terminal block 51, and the negative signal line of the four-wire analog input sensor 63 is connected to the 4th terminal of the AI terminal block 51.

[0076] Among them, after selecting the four-wire analog input sensor 63 through the touch screen 10 and setting the measuring range of the four-wire analog input sensor 63, the PLC control module 20 controls the first intermediate relay KA1 to be energized and the second intermediate relay KA2 to be energized, and the circuit switches to the detection mode of the four-wire analog input sensor 63. Then, the four-wire analog input sensor 63 is connected in the above manner. After the connection, the touch screen 10 can display the detected real-time value, and this real-time value can be compared with the pre-set standard value. If they are the same, it can be considered that the four-wire analog input sensor 63 is normal; if not, it can be considered that the four-wire analog input sensor 63 is abnormal.

[0077] Figure 6 The following is a connection diagram of a two-wire digital input sensor and a DI terminal block provided by an embodiment of the present invention, as Figure 6 shown:

[0078] When the device 60 to be detected is a two-wire digital input sensor 64, the third intermediate relay KA3 loses power, and the fourth intermediate relay KA4 is energized. The common line of the two-wire digital input sensor 64 is connected to the 3rd terminal of the DI terminal block 52, and the signal line of the two-wire digital input sensor 64 is connected to the 4th terminal of the DI terminal block 52.

[0079] Among them, after selecting the two-wire digital input sensor 64 through the touch screen 10, the PLC control module 20 controls the third intermediate relay KA3 to lose power and controls the fourth intermediate relay KA4 to be energized. The circuit switches to the detection mode of the two-wire digital input sensor 64, and then the two-wire digital input sensor 64 is connected in the above manner. After connection, the touch screen 10 can display the detected real-time status, and this real-time status can be compared with the pre-set standard status. If they are consistent, it can be considered that the two-wire digital input sensor 64 is normal. If they are inconsistent, it can be considered that the two-wire digital input sensor 64 is abnormal.

[0080] Figure 7 The figure shows the connection diagram of a three-wire digital input sensor and a DI terminal block provided by an embodiment of the present invention, as Figure 7 shown:

[0081] When the device 60 to be detected is a three-wire digital input sensor 65, the third intermediate relay KA3 is energized, and the fourth intermediate relay KA4 loses power. The positive power line of the three-wire digital input sensor 65 is connected to the 2nd terminal of the DI terminal block 52, and the signal line of the three-wire digital input sensor 65 is connected to the 4th terminal of the DI terminal block 52.

[0082] Among them, after selecting the three-wire digital input sensor 65 through the touch screen 10, the PLC control module 20 controls the third intermediate relay KA3 to be energized and controls the fourth intermediate relay KA4 to lose power. The circuit switches to the detection mode of the three-wire digital input sensor 65, and then the three-wire digital input sensor 65 is connected in the above manner. After connection, the touch screen 10 can display the detected real-time status, and this real-time status can be compared with the pre-set standard status. If they are consistent, it can be considered that the three-wire digital input sensor 65 is normal. If they are inconsistent, it can be considered that the three-wire digital input sensor 65 is abnormal.

[0083] Figure 8 The figure shows the connection diagram of a four-wire digital input sensor and a DI terminal block provided by an embodiment of the present invention, as Figure 8 shown:

[0084] When the device 60 to be detected is a 4-wire digital input sensor 66, the third intermediate relay KA3 and the fourth intermediate relay KA4 are both energized. The positive power line of the 4-wire digital input sensor 66 is connected to the terminal 1 of the DI terminal block 52, the negative power line of the 4-wire digital input sensor 66 is connected to the terminal 2 of the DI terminal block 52, the common line of the 4-wire digital input sensor 66 is connected to the terminal 3 of the DI terminal block 52, and the signal line of the 4-wire digital input sensor 66 is connected to the terminal 4 of the DI terminal block 52.

[0085] Among them, after selecting the 4-wire digital input sensor 66 through the touch screen 10, the PLC control module 20 controls the third intermediate relay KA3 to be energized and controls the fourth intermediate relay KA4 to be energized. The circuit switches to the detection mode of the 4-wire digital input sensor 66, and then the 4-wire digital input sensor 66 is connected in the above manner. After the connection, the touch screen 10 can display the detected real-time status, and this real-time status can be compared with the pre-set standard status. If they are consistent, it can be considered that the 4-wire digital input sensor 66 is normal; if not, it can be considered that the 4-wire digital input sensor 66 is abnormal.

[0086] Figure 9 The figure shows the connection diagram of an analog output actuator and an AO terminal block provided by an embodiment of the present invention, as Figure 9 shown:

[0087] When the device 60 to be detected is an analog output actuator 67, the positive signal line of the analog output actuator 67 is connected to the terminal 1 of the AO terminal block 53, and the negative signal line of the analog output actuator 67 is connected to the terminal 2 of the AO terminal block 53.

[0088] Among them, after selecting the analog output actuator 67 through the touch screen 10, the analog output actuator 67 is connected in the above manner. After the connection, the analog output set value is input on the touch screen 10. If the value received by the analog output actuator 67 is consistent with the analog output set value of the touch screen 10, it can be considered that the analog output actuator 67 is normal; if not, it can be considered that the analog output actuator 67 is abnormal.

[0089] Figure 10 The figure shows the connection diagram of a digital output actuator and a DO terminal block provided by an embodiment of the present invention, as Figure 10 shown:

[0090] When the device 60 to be detected is a digital output actuator 68, the positive signal line of the digital output actuator 68 is connected to the terminal 1 of the DO terminal block 54, and the negative signal line of the digital output actuator 68 is connected to the terminal 2 of the DO terminal block 54.

[0091] Among them, after selecting the digital output actuator 68 through the touch screen 10, the digital output actuator 68 is connected in the above-mentioned manner. After the connection, the digital output state is switched on the touch screen 10, and the state of the digital output actuator 68 can be compared with the digital output state on the touch screen 10. If they are consistent, it can be considered that the digital output actuator 68 is normal. If they are inconsistent, it can be considered that the digital output actuator 68 is abnormal.

[0092] The quality detection device for sensors and actuators provided by the embodiments of the present invention can select the device to be detected through the touch screen, so that the CPU module controls the intermediate relay to switch to control the on-off of different signal circuits, thereby testing the corresponding device to be detected. And through the connection of the terminal block with the corresponding device to be detected and each module in the PLC control module, the device to be detected is effectively connected, so as to realize quality detection. It is not only easy to operate, but also can fundamentally prevent the damage of the device to be detected during the detection process due to the lack of professionalism of the detection personnel or negligence during the detection.

[0093] The unit described as a separate component may or may not be physically separated. The component shown as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0094] Finally, it should be noted that the above-mentioned embodiments are only specific embodiments of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting them. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present invention can still modify the technical solutions recorded in the foregoing embodiments or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A quality detection device for a sensor and an actuator, characterized in that: The device comprises: a touch screen, a programmable logic controller (PLC) control module, an intermediate relay, a switching power supply and a terminal block; The touch screen is used to display different types of devices to be detected and different signal types of the devices to be detected for selection, and input the input signal generated after the selection to the PLC control module; receive the display signal output by the PLC control module, and display the detection result of the device to be detected based on the display signal; The PLC control module is used to receive the input signal and perform logic processing on the input signal to obtain a recognizable control signal; send the recognizable control signal to the intermediate relay; receive the signal to be detected corresponding to the device to be detected; perform quality detection processing based on the signal to be detected to obtain a detection result; and output a display signal to the touch screen based on the detection result; The intermediate relay is used to receive the identifiable control signal, control the on and off of different signals based on the identifiable control signal, and isolate different signals; The switching power supply is used to supply power to the PLC control module, the intermediate relay and the device to be detected; The terminal block is used to connect the device to be detected with the switching power supply, and to connect the device to be detected with the PLC control module.

2. The quality detection device for sensors and actuators according to claim 1, characterized in that: The display signal includes: a first display signal and a second display signal; the PLC control module includes: a central processing unit CPU module, a digital input signal DI module, a digital output signal DO module, an analog input signal AI module and an analog output signal AO module; The CPU module is used to receive the input signal and perform logic processing on the input signal to obtain a recognizable control signal; send the recognizable control signal to the intermediate relay so that the intermediate relay can adjust the signal on and off; The DI module is used to receive the signal to be detected corresponding to the device to be detected based on the signal on-off adjustment performed by the intermediate relay; convert the signal to be detected to obtain a first identifiable digital signal; and input the first identifiable digital signal to the CPU module; The CPU module is further used to receive the first identifiable digital signal and perform quality detection processing on the first identifiable digital signal to obtain a first control signal; and input the first control signal into the DO module; The DO module is used to receive the first control signal and perform signal conversion on the first control signal to obtain the first display signal, and input the first display signal to the touch screen; The AI ​​module is used for receiving the signal to be detected corresponding to the device to be detected and converting the signal to be detected into a second identifiable digital signal based on the signal on-off adjustment performed by the intermediate relay; and inputting the second identifiable digital signal into the CPU module; The CPU module is further used to receive the second identifiable digital signal and perform quality detection processing on the second identifiable digital signal to obtain a second control signal; and input the second control signal into the AO module; The AO module is used to receive the second control signal and perform signal conversion on the second control signal to obtain the second display signal, and input the second display signal to the touch screen.

3. The quality detection device for sensors and actuators according to claim 2, characterized in that: The wiring terminal block includes: an analog input signal AI terminal block, a digital input signal DI terminal block, an analog output signal AO terminal block and a digital output signal DO terminal block; The CPU module is connected to the touch screen through a network cable; the AI ​​module is connected to the corresponding AI terminal block after conversion by the intermediate relay; based on the signal on-off adjustment performed by the intermediate relay, the AI ​​terminal block is connected to the device to be detected; the DI module is connected to the corresponding DI terminal block after conversion by the intermediate relay; based on the signal on-off adjustment performed by the intermediate relay, the DI terminal block is connected to the device to be detected; the AO module is connected to the AO terminal block; the AO terminal block is connected to the corresponding device to be detected; the DO module is connected to the DO terminal block; the DO terminal block is connected to the corresponding device to be detected.

4. The quality detection device for sensors and actuators according to claim 3, characterized in that: The equipment to be detected includes: a 2-wire analog input sensor, a 3-wire analog input sensor, a 4-wire analog input sensor; a 2-wire digital input sensor, a 3-wire digital input sensor, a 4-wire digital input sensor; an analog output actuator; a digital output actuator; the intermediate relay includes: a first intermediate relay, a second intermediate relay, a third intermediate relay and a fourth intermediate relay.

5. The quality detection device for sensors and actuators according to claim 4, characterized in that: When the device to be detected is a 2-wire analog input sensor, the first intermediate relay and the second intermediate relay are both de-energized, the positive power line of the 2-wire analog input sensor is connected to terminal 1 of the AI ​​terminal block, and the positive signal line of the 2-wire analog input sensor is connected to terminal 3 of the AI ​​terminal block.

6. The quality detection device for sensors and actuators according to claim 4, characterized in that: When the device to be detected is a three-wire analog input sensor, the first intermediate relay is energized, the second intermediate relay is de-energized, the positive power line of the three-wire analog input sensor is connected to terminal 1 of the AI ​​terminal block, the negative power line of the three-wire analog input sensor is connected to terminal 2 of the AI ​​terminal block, and the positive signal line of the three-wire analog input sensor is connected to terminal 3 of the AI ​​terminal block.

7. The quality detection device for sensors and actuators according to claim 4, characterized in that: When the device to be detected is a 4-wire analog input sensor, the first intermediate relay and the second intermediate relay are both energized, the positive power line of the 4-wire analog input sensor is connected to terminal 1 of the AI ​​terminal block, the negative power line of the 4-wire analog input sensor is connected to terminal 2 of the AI ​​terminal block, the positive signal line of the 4-wire analog input sensor is connected to terminal 3 of the AI ​​terminal block, and the negative signal line of the 4-wire analog input sensor is connected to terminal 4 of the AI ​​terminal block.

8. The quality detection device for sensors and actuators according to claim 4, characterized in that: When the device to be detected is a 2-wire digital input sensor, the third intermediate relay loses power, the fourth intermediate relay is energized, the common line of the 2-wire digital input sensor is connected to terminal No. 3 of the DI terminal row, and the signal line of the 2-wire digital input sensor is connected to terminal No. 4 of the DI terminal row.

9. The quality detection device for sensors and actuators according to claim 4, characterized in that: When the device to be detected is a 3-wire digital input sensor, the third intermediate relay is energized, the fourth intermediate relay is de-energized, the positive power line of the 3-wire digital input sensor is connected to terminal No. 2 of the DI terminal row, and the signal line of the 3-wire digital input sensor is connected to terminal No. 4 of the DI terminal row.

10. The quality detection device for sensors and actuators according to claim 4, characterized in that: When the device to be detected is a 4-wire digital input sensor, the third intermediate relay and the fourth intermediate relay are both energized, the positive power line of the 4-wire digital input sensor is connected to terminal 1 of the DI terminal row, the negative power line of the 4-wire digital input sensor is connected to terminal 2 of the DI terminal row, the common line of the 4-wire digital input sensor is connected to terminal 3 of the DI terminal row, and the signal line of the 4-wire digital input sensor is connected to terminal 4 of the DI terminal row.

11. The quality detection device for sensors and actuators according to claim 4, characterized in that: When the device to be detected is an analog output actuator, the positive signal line of the analog output actuator is connected to terminal 1 of the AO terminal block, and the negative signal line of the analog output actuator is connected to terminal 2 of the AO terminal block.

12. The quality detection device for sensors and actuators according to claim 4, characterized in that: When the device to be detected is a digital output actuator, the positive signal line of the digital output actuator is connected to terminal 1 of the DO terminal block, and the negative signal line of the digital output actuator is connected to terminal 2 of the DO terminal block.

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