Power-on / off test instrument and power-on / off test system

Abstract

The utility model relates to an on-off test instrument and an on-off test system. The on-off test instrument comprises a shell, a PLC, a first communication interface, a first counting circuit, a first counting display module and a power supply circuit, wherein the first counting circuit and the first counting display module are connected. The shell is provided with a plurality of panels to form an inner cavity of the shell; the PLC is provided with a first power-on and power-off control circuit and a plurality of external terminals, the external terminals are used for being connected with equipment to be tested, and the first power-on and power-off control circuit is used for carrying out power-on and power-off tests on the equipment to be tested; the first communication interface is used for connecting to-be-tested equipment to obtain power-on and power-off test data of the to-be-tested equipment; the first counting circuit is used for counting first on-off times in the on-off test of the first on-off control circuit, and the first counting display module is used for displaying the first on-off times; the power supply circuit is arranged in the inner cavity and used for supplying power to the first on-off control circuit, the first counting circuit and the first counting display module and powering on the to-be-tested device through the first on-off control circuit.

Description

Technical Field

[0001] The present application relates to the technical field of power-on and power-off test instruments, and in particular to a power-on and power-off test instrument and a power-on and power-off test system. Background Art

[0002] In the electronic product manufacturing industry, a mature electronic product requires multi-faceted testing and verification. Through multi-faceted testing, it is ensured that the products with excellent performance and qualified products flow into the market. Especially for laser dust sensors, infrared sensors and carbon dioxide sensors, sensors are the core components of fresh air systems, purifiers, vehicle systems and air conditioning systems. The stability and reliability of the products are very important. In the production and manufacturing process of sensors, aging test and pulse fatigue test are relatively critical tests. Sensor accessories such as fans, laser tubes and light-emitting diodes can detect defective accessories through aging fatigue tests, thereby improving the yield rate of product assembly into finished products. The finished sensor products are tested for aging fatigue to detect defective products and improve the qualified rate of product shipment. Many electronic products or household appliances are damaged after a sudden power outage or call, so sudden power outage or call tests are required during product development.

[0003] However, existing power-on and power-off test instruments can only realize simple and repetitive power-on and power-off tests, and cannot realize more test functions and are difficult to meet more test needs. Utility Model Content

[0004] Based on this, it is necessary to provide a power-on and power-off test instrument and a power-on and power-off test system to address the above technical issues.

[0005] In a first aspect, the present application provides a power-on and power-off test instrument, comprising:

[0006] A shell body, wherein the shell body is provided with a plurality of panels connected in series, wherein the plurality of panels form an inner cavity of the shell body;

[0007] The PLC controller is provided with a first on-off control circuit and a plurality of external terminals, wherein the first on-off control circuit is connected to each of the external terminals, the plurality of external terminals are embedded in a first panel among the plurality of panels, the external terminals are used to connect to a device under test, and the first on-off control circuit is used to perform an on-off test on the device under test;

[0008] A first communication interface, embedded in a second panel among the plurality of panels, for connecting to a device under test to obtain power-on and power-off test data of the device under test;

[0009] a first counting circuit and a first counting display module connected to each other, the first counting circuit being arranged in the inner cavity, the first counting display module being embedded in the first panel, the first counting circuit being connected to the first power on / off control circuit and being used for counting the first power on / off times in the power on / off test performed by the first power on / off control circuit, and the first counting display module being used for displaying the first power on / off times;

[0010] A power supply circuit is arranged in the inner cavity, connected to the first power on and off control circuit, the first counting circuit and the first counting display module, and is used to supply power to the first power on and off control circuit, the first counting circuit and the first counting display module, and to power on the device under test through the first power on and off control circuit.

[0011] In one embodiment, the power-on and power-off test instrument further includes:

[0012] A serial port server is arranged in the inner cavity and is used to communicate with an external host computer to receive a control signal from the external host computer;

[0013] A serial port relay comprises a second on-off power control circuit and an output port connected to each other, wherein the second on-off power control circuit is connected to the serial port server, the output port is embedded in a third panel among the multiple panels, the output port is used to connect a device to be tested, and the second on-off power control circuit performs a power on / off test on the device to be tested connected to the output port via the output port under the action of the control signal.

[0014] In one embodiment, the power-on and power-off test instrument further includes:

[0015] A second counting circuit and a second counting display module are connected, the second counting circuit is arranged in the inner cavity, the second counting display module is embedded in the third panel, the second counting circuit is connected to the second power on and off control circuit, and is used to count the second power on and off times of the second power on and off control circuit performing the power on and off test.

[0016] In one embodiment, the power-on and power-off test instrument further includes:

[0017] The temperature and humidity detection module is arranged in the inner cavity and connected to the serial port server, and is used for collecting the temperature and humidity information of the power on and off test environment in real time, and transmitting the temperature and humidity information to the external host computer through the serial port server.

[0018] In one embodiment, the power-on and power-off test instrument further includes:

[0019] The second communication interface is embedded in the second panel, connected to the serial port server, and used to connect to the external host computer so that the serial port server can communicate with the external host computer through the second communication interface.

[0020] In one embodiment, the power-on and power-off test instrument further includes:

[0021] The third communication interface is embedded in the second panel, connected to the serial port server, and used for connecting to an external test board to transmit test information of the device under test connected to the external test board.

[0022] In one embodiment, the power-on and power-off test instrument further includes:

[0023] A power interface, embedded in a third panel among the plurality of panels, connected to the power supply circuit, and used to connect to an external power supply to access the power supply;

[0024] A power switch, embedded in a fourth panel among the multiple panels, is connected to the first power on / off control circuit, the first counting circuit, the first counting display module and the power supply circuit, and is used to turn on or off the connection between the power supply circuit and the first power on / off control circuit, the first counting circuit and the first counting display module.

[0025] In one embodiment, the power-on and power-off test instrument further includes:

[0026] A voltage detection circuit and a voltage display module connected thereto, the voltage detection circuit being arranged in the inner cavity and connected to the power supply circuit and the voltage display module, and being used to collect the power supply voltage value of the power supply circuit, and the voltage display module being embedded in the fourth panel, and being used to display the power supply voltage value;

[0027] A current detection circuit and a current display module connected to each other, the current detection circuit is arranged in the inner cavity and is connected to the power supply circuit and the current display module, and is used to collect the power supply current value of the power supply circuit, and the current display module is embedded in the fourth panel to display the power supply current value.

[0028] In a second aspect, the present application also provides a power-on and power-off test system, comprising:

[0029] Equipment under test;

[0030] The power-on and power-off test instrument as mentioned above is connected to the device under test, and is used to perform a power-on and power-off test on the device under test and obtain power-on and power-off test data of the device under test.

[0031] In one embodiment, the power on / off test system further includes:

[0032] A host computer connected to the second communication interface of the power-on-off test instrument, and used for communicating with the serial port server of the power-on-off test instrument via the second communication interface;

[0033] A test board is provided with a communication circuit, a test circuit and a plurality of interface terminals, wherein the communication circuit and the test circuit are both connected to the plurality of interface terminals, the interface terminals are used to connect the device under test, the test circuit is used to perform a power on / off test on the device under test, and the communication circuit is connected to the power on / off test instrument and is used to obtain test information of the device under test corresponding to the interface terminals through the interface terminals.

[0034] The above-mentioned on-off power test instrument and on-off power test system, the on-off power test instrument includes a shell, a PLC controller, a first communication interface, a first counting circuit and a first counting display module connected to each other, and a power supply circuit. Among them, the shell is provided with a plurality of panels connected in succession, and the plurality of panels form an inner cavity of the shell; the PLC controller is provided with a first power on and off control circuit and a plurality of external terminals, the first power on and off control circuit is connected to each external terminal, the plurality of external terminals are embedded in a first panel among the plurality of panels, the external terminals are used to connect the device to be tested, and the first power on and off control circuit is used to perform a power on and off test on the device to be tested; the first communication interface is embedded in a second panel among the plurality of panels, and is used to connect the device to be tested to obtain the power on and off test data of the device to be tested; the first counting circuit is provided in the inner cavity, the first counting display module is embedded in the first panel, the first counting circuit is connected to the first power on and off control circuit, and is used to count the first power on and off times in the power on and off test of the first power on and off control circuit, and the first counting display module is used to display the first power on and off times; the power supply circuit is provided in the inner cavity, and is connected to the first power on and off control circuit, the first counting circuit and the first counting display module, and is used to supply power to the first power on and off control circuit, the first counting circuit and the first counting display module, and to power on the device to be tested through the first power on and off control circuit. Therefore, the power-on and power-off test instrument of the present application can not only perform power-on and power-off tests on the device under test through the test logic pre-stored in the PLC controller, but also obtain the power-on and power-off test data of the device under test through the first communication interface, so that the external device can further judge the test results of the device under test based on the power-on and power-off test data, thereby meeting more test needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is an expanded view of a housing in one embodiment of the present application;

[0036] Figure 2 A schematic diagram of the connection relationship between the PLC controller, the first communication interface, the first counting circuit, the first counting display module, the power supply circuit and the device under test in one embodiment of the present application;

[0037] Figure 3 This is a schematic structural diagram of a first panel in an embodiment of the present application;

[0038] Figure 4 This is a schematic diagram of the structure of the second panel in one embodiment of the present application;

[0039] Figure 5 is a schematic structural diagram of a third panel in an embodiment of the present application;

[0040] Figure 6 It is a UI interface of a control program in one embodiment of the present application;

[0041] Figure 7 is a schematic structural diagram of a fourth panel in an embodiment of the present application;

[0042] Figure 8 This is a schematic diagram of the structure of a test board in an embodiment of the present application;

[0043] Fig. 9 It is a structural schematic diagram of a power on / off test system in one embodiment of the present application.

[0044] Description of Figure Numbers:

[0045] Power on / off test system: 10; housing: 110; first panel: 111; output port: 1131; second counting display module: 1132; second panel: 112; second communication interface: 1121; third communication interface: 1122; power interface: 1123; third panel: 113; fourth panel: 114; power switch: 1141; working indicator light: 1142; power on indicator light: 1143; voltage display module: 1144; current display display module: 1145; PLC controller: 120; first power-on / off control circuit: 121; external terminal: 122; first communication interface: 130; first counting circuit: 140; first counting display module: 150; power supply circuit: 160; serial port server: 170; serial port relay: 180; device under test: 200; test board: 300; communication circuit: 310; interface terminal: 320; DIP switch: 330; host computer: 400. DETAILED DESCRIPTION

[0046] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0047] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] The power-on and power-off test instrument proposed in this application can be applied to the product development process of various projects, and is mainly used in the incoming material inspection process to verify the stability and reliability of the product. For example, in the practice of production projects, the repeated power-on and power-off function is used to verify the reliability of a small DC fan after repeated power-on, verify the stability of the light of a small laser transmitter, verify the laser dust sensor, infrared sensor and carbon dioxide sensor, and perform a stability test on the product performance output after repeated power-on and power-off. The product obtains the test results by conducting this test, and provides an inspection method for the quality department to inspect incoming electronic materials; the production test department uses this test to realize the product aging function and eliminate defective products; the R&D department uses this test to confirm defects in product power supply or communication, and provide a basis for improving product quality. In addition, the power-on and power-off test instrument can also be used for reliability verification of small household appliances, simulating whether household appliances can still work normally when the city power is suddenly cut off or suddenly called, and providing a basis for the improvement of subsequent products.

[0051] In one embodiment, the present application provides a power-on and power-off test instrument, which includes a housing 110, a PLC controller 120, a first communication interface 130, a first counting circuit 140 and a first counting display module 150 connected thereto, and a power supply circuit 160. Figure 1 , Figure 1 The shell 110 of this embodiment is shown in an expanded view. The shell 110 is provided with a plurality of panels connected in series. The plurality of panels form an inner cavity of the shell 110 (attached Figure 1 The specific size of the shell 110 can be flexibly set according to actual needs, and it is only necessary to ensure that the inner cavity is large enough to accommodate the relevant circuits, modules, and the panel is large enough to set the relevant interfaces. Similarly, the preparation material of the shell 110 can also be flexibly set according to actual needs, and it is only necessary to ensure that each device and circuit can work normally. Exemplarily, the shell 110 in this embodiment is processed by a cold-rolled steel machine, and the size is the size of a common distribution box, length * width * height: 500mm * 350mm * 200mm. Figure 1 1 shows that the housing 110 includes six panels, wherein panel A is the front panel of the housing 110, panel B is the rear panel of the housing 110, panel C is the top panel of the housing 110, panel D is the right panel of the housing 110, panel E is the left panel of the housing 110, and panel F is the bottom panel of the housing 110. It can be understood that in order to embed an interface or a display module in the panel, a hole of a corresponding size can be opened in the target panel according to actual needs.

[0052] See also Figure 2 The schematic diagram of the connection relationship between the PLC controller 120, the first communication interface 130, the first counting circuit 140, the first counting display module 150, the power supply circuit 160 and the device under test 200 is shown in FIG. Figure 3 The structural diagram of the first panel 111 shown in FIG. 1 is a schematic diagram of the structure of the first panel 111, the PLC controller 120 is provided with a first on-off control circuit 121 and a plurality of external terminals 122 (see FIG. 1 ). Figure 2 Only one of them is shown in the figure), the first power on and off control circuit 121 is connected to each external terminal 122, and the multiple external terminals 122 are embedded in the first panel 111 among the multiple panels. The external terminals 122 are used to connect the device under test 200, and the first power on and off control circuit 121 is used to perform a power on and off test on the device under test 200.

[0053] Among them, the PLC controller 120 is a digital electronic device for automatic control, which can be called a programmable logic controller (PLC), such as a Mitsubishi PLC controller 120 of the model FX2N. The first power-on and power-off control circuit 121 in this embodiment can refer to a set including the core components of the programmable logic controller, such as a central processing unit CPU, a storage unit, a communication unit, an analog-to-digital conversion unit, etc. The first power-on and power-off control circuit 121 in this embodiment can pre-store instructions for performing operations such as logical operations, sequential control, timing, counting and arithmetic operations through the storage unit, and control the power-on and power-off test of the device under test 200 through digital or analog input and output. For example, the test logic pre-stored in the storage unit is to perform the power-on and power-off test of the device under test 200 x times, each time at an interval of t seconds, then the first power-on and power-off control circuit 121 performs power-on and power-off of the device under test 200 at an interval of t seconds, and performs power-on and power-off x times. A plurality of external terminals 122 include a common terminal COM and an outlet terminal Y, that is, the two ends of the device under test 200 are respectively connected to the common terminal COM and the outlet terminal Y, so as to realize the power-on or power-off action. The specific number of external terminals 122 can be flexibly set according to actual needs. In this embodiment, a situation including four groups of common terminals COM and outlet terminals Y is shown. It can be understood that in order to improve the visualization of whether the device under test 200 is fully connected to the common terminal COM and the outlet terminal Y, an indicator light can also be set to connect the corresponding common terminal COM and the outlet terminal Y respectively, to indicate whether the device under test 200 is powered on with the corresponding terminal. Among them, the first panel 111 can be any one of the multiple panels of the housing 110, and illustratively, it can be the front panel-A panel of the housing 110. It can be understood that in other embodiments, the PLC controller 120 can also be program-changed to change the test logic. For example, this program can be quickly written through the Mitsubishi FX2N ladder diagram (LAD, LadderLogic Programming Language) programming language. Set a predetermined power-on and power-off interval, for example: the sensor is powered on for 1 second and powered off for 1 second, and the power-on and power-off test is repeated. A timer function can also be added according to actual needs. By modifying the timer value, the power-on or power-off time interval can be changed, but it is not limited to this.

[0054] See again the attached Figure 2 and attached Figure 4The structural schematic diagram of the second panel 112 shown in the figure, the first communication interface 130 is embedded in the second panel 112 of multiple panels, and the first communication interface 130 is used to connect the device under test 200 to obtain the power-on and power-off test data of the device under test 200; the first communication interface 130 can be a serial communication interface, such as a DB9 pin RS232 serial port. In addition, the number of the first communication interface 130 can be flexibly set according to actual needs. The first communication interface 130 in this embodiment obtains the power-on and power-off test data of the device under test 200, and can communicate and connect the external device with the power-on and power-off test instrument, and further judge whether the device under test 200 is abnormal according to the power-on and power-off test data. For example, the first communication interface 130 is connected to the serial port server so that the serial port server establishes a communication connection with the external host computer, and performs protocol conversion on the power-on and power-off test data and transmits it to the external host computer. The second panel 112 can be any panel other than the first panel 111 among the multiple panels, such as the right panel-D panel of the housing 110.

[0055] The first counting circuit 140 is disposed in the inner cavity, referring to Figure 2 , Figure 3 The first counting and displaying module 150 is embedded in the first panel 111, the first counting circuit 140 is connected to the first power on and off control circuit 121, and is used to count the first power on and off times in the power on and off test performed by the first power on and off control circuit 121, and the first counting and displaying module 150 is used to display the first power on and off times; the power supply circuit 160 is arranged in the inner cavity, and is connected to the first power on and off control circuit 121, the first counting circuit 140 and the first counting and displaying module 150, and is used to supply power to the first power on and off control circuit 121, the first counting circuit 140 and the first counting and displaying module 150, and to power on the device under test 200 through the first power on and off control circuit 121.

[0056] The power-on and power-off test instrument in this embodiment can not only perform power-on and power-off tests on the device under test 200 through the test logic pre-stored in the PLC controller 120, but also obtain the power-on and power-off test data of the device under test 200 through the first communication interface 130, so that the external device can further judge the test results of the device under test 200 according to the power-on and power-off test data, thereby meeting more test requirements.

[0057] In one embodiment, the power-on / off test instrument further includes a serial port server and a serial port relay. The serial port server is arranged in the inner cavity and is used to communicate with an external host computer to receive a control signal from the external host computer; the serial port relay includes a second power-on / off control circuit and an output port 1131 connected thereto, and the second power-on / off control circuit is connected to the serial port server, see the attached Figure 5The structural schematic diagram of the third panel 113 shown in the figure, the output port 1131 is embedded in the third panel 113 among multiple panels, the output port 1131 is used to connect the device under test 200, and the second power on and off control circuit performs a power on and off test on the device under test 200 connected to the output port 1131 through the output port 1131 under the action of the control signal.

[0058] The external host computer may be an external control system, such as a control terminal installed with a control program. For example, it is understood that the control program may be written in an existing programming language, such as Python. In addition, for the application interface of the control program, the PySimple GUI graphical tool may be used to quickly lay out a simple UI graphical interface, but is not limited thereto. For example, Figure 6 The control program UI interface shown in the figure, open the control program HTQC.exe in the control terminal to enter the attached Figure 6 The UI interface is shown. The UI interface is mainly composed of four functional modules, with a simple interface, easy to understand and operate. In the upper left corner, there is a LOGO icon and program title that can be designed as needed. The middle part is the main part of the control program, and the bottom displays the project name and version information. Start the software, and after the test starts, the current clock information is triggered to display the current time. Module 1: Test information, you can set the necessary test parameters. Module 2: Power on and off test data acquisition and display. Module 3: Image display, power on and off test status display, operation log query. Module 4: Related information print output window, including test information, data information, error prompt information, but not limited to this.

[0059] For the communication connection between the control program and the serial port server, the Serial library can be imported to establish a socket interface for software and hardware communication (the middleware abstraction layer for communication between the application layer and the TCP / IP protocol family), so that the communication connection between the software and the serial port server can be quickly realized. Specifically, the control program can configure the test conditions such as the number of power-on and power-off tests and the power-on and power-off interval time of the serial port relay through the serial port server. If the power-on and power-off test instrument is also equipped with other sensor modules, such as a temperature detection module and a humidity detection module, the temperature, humidity and other information of the test environment can also be obtained in real time through the serial port server. In addition, based on the obtained power-on and power-off detection data, the control program can also judge the test results and give the test results, record the number of tests, the test results, and the test data are stored in the client directory folder.

[0060] The serial port server can be flexibly set according to the actual protocol conversion needs. Exemplarily, the serial port server in this embodiment is mainly used for TCP (Transmission Control Protocol) protocol and serial port protocol conversion, and the serial port protocol refers to the physical layer protocol such as RS-232. Exemplarily, the control terminal is connected to the serial port server for communication, so that the serial port server performs protocol conversion on the control signal from the control terminal, so that the control signal after the protocol conversion can set the working conditions of the serial port relay, such as the power-on and power-off interval time and the number of power-on and power-off times. At the same time, the serial port server is also connected to the first communication interface 130 to transmit the power-on and power-off test data obtained by the first communication interface 130 to an external host computer, so that the host computer further performs data analysis on the power-on and power-off test data to determine whether the device under test 200 is abnormal.

[0061] The third panel 113 can be any panel of the plurality of panels except the first panel 111 and the second panel 112, such as the rear panel-B panel of the housing 110. The third panel 113 is embedded with a plurality of output ports 1131 of serial port relays. The specific number of output ports 1131 can be flexibly set according to actual needs. The structural schematic diagram of the third panel 113 in this embodiment shows a situation including four groups, and a group of output ports 1131 includes a common terminal COM and a NO terminal. The output port 1131 is connected to the serial port server, and realizes the communication between the common terminal COM and the NO terminal according to the control signal, wherein the NO terminal represents a normally open contact. The common terminal COM and the NO terminal are both standard copper terminals. It can be understood that, based on the functional characteristics of the PLC controller 120 itself, when the first power-on and power-off control circuit 121 of the PLC controller 120 is connected to the serial port server, it can also perform a power-on and power-off test according to the control signal. Specifically, another serial port server can be set so that the PLC controller 120 and the serial port relay receive control signals received by different serial port servers to perform a power-on and power-off test. In this embodiment, the serial port relay and the serial port server are used to realize the remote control of the host computer, record the test parameters, obtain the value of the measured sensor, set various test parameters, etc. In addition, the selection of the serial port relay and the PLC controller 120 can be flexibly selected according to actual needs.

[0062] In one embodiment, the on-off power test instrument further includes a second counting circuit and a second counting display module 1132 connected thereto. The second counting circuit is disposed in the inner cavity, and again referring to the attached Figure 5 As shown in the structural schematic diagram of the third panel 113, the second counting display module 1132 is embedded in the third panel 113, and the second counting circuit is connected to the second power-on-off control circuit, for counting the second power-on and power-off times of the second power-on-off control circuit performing the power-on and power-off test, so that the power-on and power-off test instrument in this embodiment has a stronger visualization.

[0063] In one embodiment, the power-on and power-off test instrument also includes a temperature and humidity detection module, which is arranged in the inner cavity and connected to the serial port server for real-time collection of temperature and humidity information of the power-on and power-off test environment, and transmission of the temperature and humidity information to an external host computer through the serial port server.

[0064] The temperature and humidity detection module can be a temperature sensor and a humidity sensor. In this embodiment, a temperature and humidity detection module is set in the power on and off tester. When the device to be tested 200 is a temperature and humidity sensor, the temperature and humidity detection module can be used as a basis for judging the sensitivity of the temperature and humidity sensor to be tested. When the device to be tested 200 is other sensors, such as a dust sensor, a carbon dioxide sensor or other devices, the device to be tested 200 is in a complex and changeable detection environment. The temperature and humidity information collected by the temperature and humidity detection module can detect the temperature and humidity of the operating environment during the power on and off test, and detect whether the device to be tested 200 can maintain the original accuracy, such as detecting the device to be tested 200 placed in a constant temperature and humidity chamber, so that the application scenarios of the power on and off experimental instrument are more abundant.

[0065] In one embodiment, the power-on and power-off test instrument further includes a second communication interface 1121. Figure 4 The second communication interface 1121 is embedded in the second panel 112 and connected to the serial port server, and is used to connect to an external host computer so that the serial port server can communicate with the external host computer through the second communication interface 1121.

[0066] Among them, the second communication interface 1121 can be a communication interface corresponding to the conversion function of the serial port server. For example, the serial port server implements the conversion between TCP (Transmission Control Protocol) protocol and serial port protocol. The corresponding second communication interface 1121 can be a standard RJ45. The RJ45 Ethernet port is an 8-pin connector, which is usually used to terminate Ethernet cables to connect various network devices such as computers, routers and switches, etc., and can realize a stable communication connection between the serial port server and the external host computer.

[0067] In one embodiment, the power-on and power-off test instrument further includes a third communication interface 1122. Figure 4 The third communication interface 1122 is embedded in the second panel 112 and connected to the serial port server, and is used to connect to the external test board 300 to transmit the test information of the device under test 200 connected to the external test board 300. The number of the third communication interface 1122 can be flexibly set according to actual needs. The third communication interface 1122 can be an RS485 serial communication port. RS485 is an interface standard for serial communication, which can support long-distance and multi-node communication requirements. Figure 4, it is shown that the third communication interface 1122 is an RS485 serial communication port, and the number is 3. In this embodiment, the third communication interface 1122 is used to connect to the external test board 300, and the external test board 300 can be a product calibration test board 300, so that the external host computer can obtain the test information of the device under test 200 connected to the external test board 300 through the serial port server and the third communication interface 1122.

[0068] In one embodiment, the power on / off test instrument further includes a power interface 1123 and a power switch 1141. Figure 5 and attached Figure 7 The schematic diagram of the structure of the fourth panel 114 shown in the figure, the power interface 1123 is embedded in the third panel 113 among the multiple panels, the power interface 1123 is connected to the power supply circuit 160, and is used to connect to an external power supply to access the power supply; the power switch 1141 is embedded in the fourth panel 114 among the multiple panels, the power switch 1141 is connected to the first power on / off control circuit 121, the first counting circuit 140, the first counting display module 150 and the power supply circuit 160, and is used to conduct or disconnect the connection between the power supply circuit 160 and the first power on / off control circuit 121, the first counting circuit 140, and the first counting display module 150. The fourth panel 114 can be any panel among the multiple panels except the first panel 111, the second panel 112, and the third panel 113, such as the upper panel-C panel.

[0069] It is understandable that in order to further improve the visualization of the power-on and power-off test instrument, the attached Figure 7 It also shows that the power-on and power-off test instrument includes a working indicator light 1142 and a power-on indicator light 1143, which are respectively embedded in the fourth panel 114. The power-on indicator light 1143 is connected to the conductive line between the power supply circuit 160 and the device under test 200, and is used to indicate the power-on status of the power supply circuit 160 to the device under test 200. The working indicator light 1142 is provided on the conductive line between the power supply circuit 160 and the first power-on and power-off control circuit 121, the first counting circuit 140 and the first counting display module 150, and is used to indicate the power-on and power-off status of the power supply circuit 160 and the first power-on and power-off control circuit 121, the first counting circuit 140 and the first counting display module 150. The power interface 1123 can be a conventional power plug, such as a standard AC220V-10A power input socket male head.

[0070] In one embodiment, the on-off power test instrument further includes a voltage detection circuit and a voltage display module 1144 connected thereto, and a current detection circuit and a current display module 1145 connected thereto. The voltage detection circuit is arranged in the inner cavity and connected to the power supply circuit 160 and the voltage display module 1144, and is used to collect the supply voltage value of the power supply circuit 160. The voltage display module 1144 is embedded in the fourth panel 114 and is used to display the supply voltage value; the current detection circuit is arranged in the inner cavity and connected to the power supply circuit 160 and the current display module 1145, and is used to collect the supply current value of the power supply circuit 160. See the attached Figure 7 The current display module 1145 is embedded in the fourth panel 114 and is used to display the power supply current value.

[0071] In one embodiment, the present application also provides a power-on and power-off test system. The power-on and power-off test system in this embodiment includes a device under test 200 and a power-on and power-off test instrument in any of the above embodiments. The power-on and power-off test instrument is connected to the device under test 200, and is used to perform a power-on and power-off test on the device under test 200, and obtain power-on and power-off test data of the device under test 200.

[0072] Among them, the device under test 200 can be a sensor or other electronic product. When the device under test 200 is a sensor, the sensor can be powered on and off to implement an aging test of the sensor. It should be noted that when the device under test 200 is a sensor, the above test can be implemented through the corresponding calibration test board 300. When the device under test 200 is other electronic products, such as fans, laser tubes or electrical equipment, household appliances, etc., the AC220V voltage can be connected through the power supply circuit 160, and the corresponding device under test 200 can be powered on and off under the action of the PLC controller 120. Specifically, the common terminal COM of the PLC controller 120 is connected to the live wire of the power supply (L), and the Y terminal of the PLC controller 120 is connected to the live wire terminal of the household appliance (L). The neutral wire (N) of the power supply is connected to the neutral wire terminal of the household appliance. After the PLC controller 120 is powered on, the corresponding device under test 200 can be repeatedly powered on and off.

[0073] In one embodiment, see the attached Figure 8 The structural diagram of the power-on and power-off test system shown in the figure and the attached Fig. 9 The structural schematic diagram of the test board 300 shown in FIG. 1 is a schematic diagram of the structure of the test board 300, the power-on and power-off test system 10 also includes a test board 300 and a host computer 400, the host computer 400 is connected to the second communication interface 1121 of the power-on and power-off test instrument, and is used to communicate with the serial port server 170 of the power-on and power-off test instrument via the second communication interface 1121. The test board 300 is provided with a communication circuit 310, a test circuit (attached Fig. 9The communication circuit 310 and the test circuit are both connected to the multiple interface terminals 320. The interface terminals 320 are used to connect the device under test 200. The test circuit is used to perform a power-on and power-off test on the device under test 200. The communication circuit 310 is connected to the power-on and power-off test instrument and is used to obtain test information of the device under test 200 connected to the corresponding interface terminal 320 via the interface terminal 320.

[0074] It is understandable that Figure 8 The device under test 200#1 connected to the serial port relay 180, the device under test 200#2 connected to the PLC controller 120, and the device under test #3 connected to the test board 300 may be connected simultaneously or in batches.

[0075] The test board 300 may be a product test board 300, also called a product adapter board or a product calibration board, which realizes power supply and communication between the test board 300 and the device under test 200. At the same time, the number of interface terminals 320 may be multiple, so that one port of the power-on and power-off test instrument can be connected to multiple devices under test 200 for testing. The communication circuit 310 may be an RS485 chip. In addition, the test board 300 may also include an address dip switch 330 and a self-resetting fuse. The dip switch 330 is used for communication addressing of the device under test 200. Fig. 9 The example of the test board 300 including one interface terminal 320 is shown. In this embodiment, the test board 300 can be connected to 16 devices under test 200. Fig. 9 VCC is the positive input of the power supply, GND is the negative input of the power supply, the A terminal is the positive terminal of the communication circuit 310, and the B terminal is the negative terminal of the communication circuit 310. The device under test 200 connected to the test board 300 transmits the test information to the communication circuit 310 (RS485 chip). Under the addressing action of the dial switch 330, the test information is transmitted to the serial port server, and the serial port server transmits the test information to the external host computer. The self-resetting fuse is respectively connected to the positive power supply VCC and the output terminal to prevent the device under test 200 from short-circuiting, causing excessive current, and burning the power-on and power-off test instrument and the test board 300.

[0076] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the application. It should be noted that, for a person of ordinary skill in the art, several variations and improvements may be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A power on / off test instrument, characterized in that: include: A shell body, wherein the shell body is provided with a plurality of panels connected in series, wherein the plurality of panels form an inner cavity of the shell body; The PLC controller is provided with a first on-off power control circuit and a plurality of external terminals, wherein the first on-off power control circuit is connected to each of the external terminals, the plurality of external terminals are embedded in a first panel among the plurality of panels, the external terminals are used to connect to a device under test, and the first on-off power control circuit is used to perform an on-off power test on the device under test; A first communication interface, embedded in a second panel among the plurality of panels, for connecting to a device under test to obtain power-on and power-off test data of the device under test; a first counting circuit and a first counting display module connected to each other, the first counting circuit being arranged in the inner cavity, the first counting display module being embedded in the first panel, the first counting circuit being connected to the first power on / off control circuit and being used for counting the first power on / off times in the power on / off test performed by the first power on / off control circuit, and the first counting display module being used for displaying the first power on / off times; A power supply circuit is arranged in the inner cavity, connected to the first power on and off control circuit, the first counting circuit and the first counting display module, and is used to supply power to the first power on and off control circuit, the first counting circuit and the first counting display module, and to power on the device under test through the first power on and off control circuit.

2. The on-off test instrument according to claim 1, characterized in that: The power-on and power-off test instrument also includes: A serial port server is arranged in the inner cavity and is used to communicate with an external host computer to receive a control signal from the external host computer; A serial port relay, comprising a second on-off power control circuit and an output port connected to each other, wherein the second on-off power control circuit is connected to the serial port server, the output port is embedded in a third panel among the multiple panels, the output port is used to connect a device under test, and the second on-off power control circuit performs an on-off power test on the device under test connected to the output port through the output port under the action of the control signal; Wherein, the serial port server is also connected to the first communication interface to transmit the power-on and power-off test data to the external host computer.

3. The on-off power tester according to claim 2, characterized in that: The power-on and power-off test instrument also includes: A second counting circuit and a second counting display module are connected, the second counting circuit is arranged in the inner cavity, the second counting display module is embedded in the third panel, the second counting circuit is connected to the second power on and off control circuit, and is used to count the second power on and off times of the second power on and off control circuit performing the power on and off test.

4. The on-off test instrument according to claim 2, characterized in that: The power-on and power-off test instrument also includes: The temperature and humidity detection module is arranged in the inner cavity and connected to the serial port server, and is used for collecting the temperature and humidity information of the power on and off test environment in real time, and transmitting the temperature and humidity information to the external host computer through the serial port server.

5. The on-off test instrument according to claim 2, characterized in that: The power-on and power-off test instrument also includes: The second communication interface is embedded in the second panel, connected to the serial port server, and used to connect to the external host computer so that the serial port server can communicate with the external host computer through the second communication interface.

6. The on-off test instrument according to claim 2, characterized in that: The power-on and power-off test instrument also includes: The third communication interface is embedded in the second panel, connected to the serial port server, and used for connecting to an external test board to transmit test information of the device under test connected to the external test board.

7. The on-off test instrument according to claim 1, characterized in that: The power-on and power-off test instrument also includes: A power interface, embedded in a third panel among the plurality of panels, connected to the power supply circuit, and used to connect to an external power supply to access the power supply; A power switch, embedded in a fourth panel among the multiple panels, is connected to the first power on / off control circuit, the first counting circuit, the first counting display module and the power supply circuit, and is used to turn on or off the connection between the power supply circuit and the first power on / off control circuit, the first counting circuit and the first counting display module.

8. The on-off test instrument according to claim 7, characterized in that: The power-on and power-off test instrument also includes: A voltage detection circuit and a voltage display module connected thereto, the voltage detection circuit being arranged in the inner cavity and connected to the power supply circuit and the voltage display module, and being used to collect the power supply voltage value of the power supply circuit, and the voltage display module being embedded in the fourth panel, and being used to display the power supply voltage value; A current detection circuit and a current display module connected to each other, the current detection circuit is arranged in the inner cavity and is connected to the power supply circuit and the current display module, and is used to collect the power supply current value of the power supply circuit, and the current display module is embedded in the fourth panel to display the power supply current value.

9. A power on / off test system, characterized in that: include: Equipment under test; The power-on and power-off test instrument according to any one of claims 1 to 8 is connected to the device under test, and is used to perform a power-on and power-off test on the device under test and obtain power-on and power-off test data of the device under test.

10. The power on / off test system according to claim 9, characterized in that: The power-on and power-off test system also includes: A host computer connected to the second communication interface of the power-on-off test instrument, and used for communicating with the serial port server of the power-on-off test instrument via the second communication interface; A test board is provided with a communication circuit, a test circuit and a plurality of interface terminals, wherein the communication circuit and the test circuit are both connected to the plurality of interface terminals, the interface terminals are used to connect the device under test, the test circuit is used to perform a power on / off test on the device under test, and the communication circuit is connected to the power on / off test instrument and is used to obtain test information of the device under test corresponding to the interface terminals through the interface terminals.

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