Analog signal testing device

Abstract

The utility model discloses an analog signal testing device, which comprises a machine body, and a control element and an indicating lamp which are arranged on the machine body, the control element comprises a micro circuit breaker, a relay and an interface terminal which are arranged at the inner side of the machine body, at least one part of the interface terminal is exposed outside the machine body, and the indicating lamp is arranged on the machine body. At least one part of the indicating lamp is exposed outside the machine body, and the micro breaking switch, the relay, the interface terminal and the indicating lamp are connected to the control circuit. Aiming at the problem that system debugging is affected due to the fact that delivery periods of single equipment of a large system are different, the analog signal testing device is improved from the aspects of progress, delivery and the like of a product system test, integrates control and feedback, can be used as a device which is portable, movable, multi-mode, multi-group and fast to operate, and is convenient to use. The method is applied to debugging of system products and can also be applied to maintenance of the products, and the equipment debugging and maintenance efficiency can be greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of circuit control technology, and more specifically, to an analog signal testing device. Background Technology

[0002] When power plant automation control systems are interconnected and commissioned as multiple individual units, the varying delivery cycles of different manufacturers can cause the product commissioning schedule to be disrupted, affecting the delivery of the entire product system and negatively impacting the company's reputation. Utility Model Content

[0003] In view of the shortcomings of the prior art, this utility model innovatively provides an analog signal testing device that can solve the above-mentioned technical problems existing in the prior art.

[0004] To achieve the aforementioned technical objectives, this utility model discloses an analog signal testing device, comprising a main body, and control elements and indicator lights disposed on the main body. The control elements include a micro-break switch, a relay, and interface terminals. The micro-break switch, relay, and interface terminals are disposed on the inner side of the main body, with at least a portion of the interface terminals protruding to the outer side of the main body. At least a portion of the indicator lights is also protruding to the outer side of the main body.

[0005] It also includes a control circuit, to which the micro-break switch, relay, interface terminal and the indicator light are connected.

[0006] Furthermore, the control circuit includes: a DC power supply interface, a feedback signal interface, and a circuit breaker control loop.

[0007] The circuit breaker control loop is connected to the DC power supply interface, and the feedback signal interface is connected to the circuit breaker control loop.

[0008] Furthermore, the opening and closing control circuit includes one control circuit, which includes:

[0009] A first closing interface and a first opening interface are provided. The first closing interface is connected to a first electromagnetic coil, and the first opening interface is connected to a second electromagnetic coil. The two ends of the first electromagnetic coil and the second electromagnetic coil are respectively connected to the positive and negative terminals of the DC power supply interface.

[0010] The feedback signal interface includes a first feedback interface, and one end of the first electromagnetic coil and the second electromagnetic coil connected to the negative terminal interface is connected to the first feedback interface.

[0011] Further, the first closing interface comprises a first closing terminal and a second closing terminal, a first closing switch is connected between the first closing terminal and the second closing terminal, the first closing terminal is further connected with the positive terminal, and the second closing terminal is connected with the first electromagnetic coil.

[0012] The first opening interface comprises a first opening terminal and a second opening terminal, a first opening switch is connected between the first opening terminal and the second opening terminal, the first opening terminal is further connected with the positive terminal, and the second closing terminal is connected with the second electromagnetic coil.

[0013] Further, a switch 2KA1 is arranged between the first electromagnetic coil and the second closing terminal, and the switch 2KA1 is connected with the positive terminal through a switch 1KA1.

[0014] Further, the closing and opening control circuit comprises a two-way control circuit which is connected in parallel with the one-way control circuit, and the two-way control circuit comprises:

[0015] A second closing interface and a second opening interface, the second closing interface is connected with a third electromagnetic coil, the second opening interface is connected with a fourth electromagnetic coil, and two ends of the third electromagnetic coil and the fourth electromagnetic coil are respectively connected with the positive terminal and the negative terminal of the DC power supply interface,

[0016] The feedback signal interface comprises a second feedback interface, and one end of the third electromagnetic coil and the fourth electromagnetic coil connected with the negative terminal is connected with the second feedback interface.

[0017] Further, the second closing interface comprises a third closing terminal and a fourth closing terminal, a second closing switch is connected between the third closing terminal and the fourth closing terminal, the third closing terminal is further connected with the positive terminal, and the fourth closing terminal is connected with the third electromagnetic coil.

[0018] The second opening interface comprises a third opening terminal and a fourth opening terminal, a second opening switch is connected between the third opening terminal and the fourth opening terminal, the third opening terminal is further connected with the positive terminal, and the fourth closing terminal is connected with the fourth electromagnetic coil.

[0019] Further, a switch 4KA1 is arranged between the third electromagnetic coil and the fourth closing terminal, and the switch 4KA1 is connected with the positive terminal through a switch 3KA1.

[0020] The third closing terminal is provided with a switch 1SA2 connected with the positive terminal.

[0021] Further, the direct current power interface is connected with a first indicator lamp and a second indicator lamp in parallel, the first indicator lamp is connected with a switch 1KA2, the second indicator lamp is connected with a switch 3KA2,

[0022] The first indicator lamp and the second indicator lamp are connected with the control circuit in parallel.

[0023] Further, the control circuit is provided with a switch 1SA1 between the direct current power interface.

[0024] The beneficial effects of the utility model are:

[0025] The utility model analog signal test device is different in the cycle of each single equipment delivery of large system, influences system debugging this problem, improves from the progress, delivery angle of product system test, integrates design to control and feedback, can be used as portable mobile, multi-mode group, quick operation device, is applied to system product debugging, also can be applied to product maintenance aspect, can greatly improve equipment debugging and maintenance efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The internal structure schematic diagram of the utility model analog signal test device is shown;

[0027] Figure 2 The external panel schematic diagram of the utility model analog signal test device is shown;

[0028] Figure 3 The side view schematic diagram of the utility model analog signal test device is shown;

[0029] Figure 4 The side plate material schematic diagram of the utility model body is shown;

[0030] Figure 5 The circuit schematic diagram of the utility model analog signal test device is shown.

[0031] In the drawing,

[0032] 1, body;11, main plate material;12, side plate material;121, wire hole;2, control element;3, indicator lamp. DETAILED DESCRIPTION

[0033] The utility model analog signal test device is explained and described in detail below in combination with the drawing.

[0034] The utility model analog signal test device aims at the problem that the long and short of each single equipment delivery cycle of big system influences system debugging, improves from the angle of improving product system test progress, delivery, integrates control and feedback design, can be used as portable, multi-mode group, quick operation device, is applied to system product debugging, also can be applied to product maintenance, can improve equipment debugging and maintenance efficiency greatly.

[0035] The utility model provides a kind of analog signal test device, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown in the figure, including body 1, and control element 2 and indicator light 3 set on body 1, control element 2 includes micro switch, relay (1KA-4KA) and interface terminal, micro switch, relay and interface terminal are set on the inside of body 1, at least a part of interface terminal is exposed to the outside of body 1, at least a part of indicator light 3 is exposed on the outside of body 1, further including control circuit, micro switch, relay, interface terminal and indicator light 3 are connected to control circuit.

[0036] Optionally, body 1 is made of metal plate, including main plate material 11 and side plate material 12, main plate material 11 is rectangular, side plate material 12 is set two, and is perpendicular to main plate material 11, two side plate materials 12 are set on the two edges of main plate material 11 parallel to each other, the inside of body 1 is formed between two side plate materials 12, control element 2 is located between two side plate materials 12 and is fixed on main plate material 11. Further, a part of interface terminal and indicator light 3 are set on the outside wall of main plate material 11, and each terminal and indicator light 3 is marked on main plate material 11. Two side plate materials 12 are formed with wire hole 121 for wire in and out. In the embodiment, the analog signal test device can be placed horizontally for use, or placed vertically, or placed in any posture according to actual application scene, and is suitable for rich application scenes.

[0037] The utility model analog signal test device builds relay control circuit through main order electrical element, relay and other electrical element design, utilizes electromagnetic effect to control the on-off of mechanical contact, to realize the control of circuit. Module device is composed of input output interface and control loop, and working principle is based on electromagnetic induction, by controlling incoming low voltage switch signal, and signal self-lock keeps always effective enable, drive corresponding circuit relay action, signal is effective, relay trigger;Signal is invalid, relay suppresses;Through the logic combination design of circuit, the final output signal can be normally fed back to the tested terminal to complete equipment (system) test.

[0038] The input signal is a passive contact required by the test terminal. When the test terminal sends a signal (passive contact closed) through the access to the analog device circuit, the analog device receives the contact state on circuit, triggers the circuit logic action, and sends a feedback signal to the test terminal. Conversely, when the test terminal sends a signal (passive contact open), the analog device receives the contact state off circuit, triggers the circuit logic action, and sends a feedback signal to the test terminal.

[0039] The output signal is a low-level 24V voltage signal. When the voltage is low-level 24V, the output signal is valid, and when the voltage is 0V to ground, the output signal is invalid.

[0040] In some embodiments, as shown in Figure 5 The control circuit includes a DC power supply interface, a feedback signal interface, and a closing and opening control loop. The closing and opening control loop is connected to the DC power supply interface, and the feedback signal interface is connected to the closing and opening control loop. The DC power supply interface is connected in parallel with a first indicator light and a second indicator light. The first indicator light is connected with a switch 1KA2, and the second indicator light is connected with a switch 3KA2. The first indicator light and the second indicator light are connected in parallel with the control circuit.

[0041] Optionally, the closing and opening control loop includes a one-way control loop. The one-way control loop includes a first closing interface and a first opening interface. The first closing interface is connected with a first electromagnetic coil, and the first opening interface is connected with a second electromagnetic coil. The two ends of the first electromagnetic coil and the second electromagnetic coil are connected with the positive terminal and the negative terminal of the DC power supply interface, respectively. The feedback signal interface includes a first feedback interface. The end of the first electromagnetic coil and the second electromagnetic coil connected with the negative terminal is connected with the first feedback interface.

[0042] The first closing interface includes a first closing terminal and a second closing terminal. The first closing terminal and the second closing terminal are connected with a first closing switch. The first closing terminal is also connected with the positive terminal. A switch 1SA1 is arranged between the first closing terminal and the DC power supply interface. The second closing terminal is connected with the first electromagnetic coil. A switch 2KA1 is arranged between the first electromagnetic coil and the second closing terminal. A switch 1KA1 is connected between the switch 2KA1 and the positive terminal. The first opening interface includes a first opening terminal and a second opening terminal. The first opening terminal and the second opening terminal are connected with a first opening switch. The first opening terminal is also connected with the positive terminal. The second closing terminal is connected with the second electromagnetic coil.

[0043] The operation method of the one-way control loop includes:

[0044] The DC 24V direct current power supply is normally connected, the micro-break switch is closed, the 1SA (1SA1 and 1SA2 are contacts) working power supply switch is pressed to connect the circuit, the device is normally on standby, when a closing pulse signal is input, the first electromagnetic coil 1KA is enabled, the 1KA1 contact is closed to lock the closing circuit, at the same time, the 1KA2 contact is closed, the 1KA3 contact is closed to feed back the closing and opening state signal, when an opening pulse signal is input, the second electromagnetic coil 2KA is enabled, the 2KA1 contact is opened to unlock the closing circuit, the first electromagnetic coil 1KA is powered off, all the contacts of the first electromagnetic coil 1KA are opened, the 1-way closing and opening indication lamp is turned off, and the closing and opening state signal is turned off (the remote receiving terminal defines the opening). In the embodiment, the closing pulse signal and the opening pulse signal cannot be input at the same time.

[0045] In some embodiments, the closing and opening control circuit includes a two-way control circuit which is connected in parallel with the one-way control circuit, and the two-way control circuit includes:

[0046] The second closing interface is connected with the third electromagnetic coil, the second opening interface is connected with the fourth electromagnetic coil, two ends of the third electromagnetic coil and the fourth electromagnetic coil are connected with the positive pole interface and the negative pole interface of the direct current power supply interface respectively, and the feedback signal interface includes a second feedback interface, one end of the third electromagnetic coil and the fourth electromagnetic coil connected with the negative pole interface is connected with the second feedback interface.

[0047] The second closing interface includes a third closing terminal and a fourth closing terminal, the second closing switch is connected between the third closing terminal and the fourth closing terminal, the third closing terminal is further connected with the positive pole interface, and the switch 1SA2 is arranged between the third closing terminal and the positive pole interface. The fourth closing terminal is connected with the third electromagnetic coil, the switch 4KA1 is arranged between the third electromagnetic coil and the fourth closing terminal, the switch 3KA1 is connected between the switch 4KA1 and the positive pole interface; the second opening interface includes a third opening terminal and a fourth opening terminal, the second opening switch is connected between the third opening terminal and the fourth opening terminal, the third opening terminal is further connected with the positive pole interface, and the fourth closing terminal is connected with the fourth electromagnetic coil. The working mode of the two-way control circuit is the same as that of the one-way control circuit, and will not be described in detail here.

[0048] In the description of the utility model, it is necessary to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the indicated device or element to have a particular orientation, to be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0049] In the utility model, unless another explicit provision and limitation, the terms "mount", "connect", "connect", "fix" and other terms should be understood in a broad sense, for example, can be fixed connection, or can be detachable connection, or be integrated, can be mechanical connection, or can be electrical connection, can be directly connected, or indirectly connected through an intermediate medium, can be the communication inside two elements or the interaction relationship of two elements, unless another explicit limitation. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0050] In the description of the specification, the description of the terms "the embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in at least one embodiment or example. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0051] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless another explicit specific limitation.

[0052] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and simple improvement made on the essential content of the utility model shall be included in the protection scope of the utility model.

Claims

1. An analog signal testing apparatus, characterized by comprising: The machine body, and the control element and the indicator light arranged on the machine body, the control element comprising a micro-break switch, a relay and an interface terminal, the micro-break switch, the relay and the interface terminal being arranged on the inner side of the machine body, at least a part of the interface terminal being exposed to the outer side of the machine body, at least a part of the indicator light being exposed to the outer side of the machine body, Further comprising a control circuit, the micro-break switch, the relay, the interface terminal and the indicator light being connected to the control circuit.

2. The analog signal test device of claim 1, wherein, The control circuit comprises a direct current power supply interface, a feedback signal interface and a close-open control loop, The close-open control loop is connected with the direct current power supply interface, and the feedback signal interface is connected with the close-open control loop.

3. The analog signal test set of claim 2, wherein, The close-open control loop comprises a one-way control loop, and the one-way control loop comprises: A first close interface and a first open interface, the first close interface being connected with a first electromagnetic coil, the first open interface being connected with a second electromagnetic coil, two ends of the first electromagnetic coil and the second electromagnetic coil being connected with a positive pole interface and a negative pole interface of the direct current power supply interface respectively, The feedback signal interface comprises a first feedback interface, and one end of the first electromagnetic coil and the second electromagnetic coil connected with the negative pole interface is connected with the first feedback interface.

4. The analog signal test set of claim 3, wherein, The first close interface comprises a first close terminal and a second close terminal, the first close terminal and the second close terminal being connected with a first close switch, the first close terminal being further connected with the positive pole interface, and the second close terminal being connected with the first electromagnetic coil; The first open interface comprises a first open terminal and a second open terminal, the first open terminal and the second open terminal being connected with a first open switch, the first open terminal being further connected with the positive pole interface, and the second close terminal being connected with the second electromagnetic coil.

5. The analog signal test set of claim 4, wherein, A switch 2KA1 is arranged between the first electromagnetic coil and the second close terminal, and the switch 2KA1 is connected with a switch 1KA1 between the positive pole interface.

6. The analog signal test set of claim 3, wherein, The close-open control loop comprises a two-way control loop, the two-way control loop being connected with the one-way control loop in parallel, and the two-way control loop comprises: A second close interface and a second open interface, the second close interface being connected with a third electromagnetic coil, the second open interface being connected with a fourth electromagnetic coil, two ends of the third electromagnetic coil and the fourth electromagnetic coil being connected with the positive pole interface and the negative pole interface of the direct current power supply interface respectively, The feedback signal interface comprises a second feedback interface, and one end of the third electromagnetic coil and the fourth electromagnetic coil connected with the negative pole interface is connected with the second feedback interface.

7. The analog signal test set of claim 6, wherein, The second close interface comprises a third close terminal and a fourth close terminal, the third close terminal and the fourth close terminal being connected with a second close switch, the third close terminal being further connected with the positive pole interface, and the fourth close terminal being connected with the third electromagnetic coil; The second open interface comprises a third open terminal and a fourth open terminal, the third open terminal and the fourth open terminal being connected with a second open switch, the third open terminal being further connected with the positive pole interface, and the fourth open terminal being connected with the fourth electromagnetic coil. The second split gate interface comprises a third split gate terminal and a fourth split gate terminal, a second split gate switch is connected between the third split gate terminal and the fourth split gate terminal, the third split gate terminal is also connected with the positive electrode interface, and the fourth split gate terminal is connected with the fourth electromagnetic coil.

8. The analog signal test set of claim 7, wherein, A switch 4KA1 is arranged between the third electromagnetic coil and the fourth split gate terminal, and a switch 3KA1 is connected between the switch 4KA1 and the positive electrode interface. A switch 1SA2 is arranged between the third split gate terminal and the positive electrode interface.

9. The analog signal test device according to any one of claims 2 to 8, characterized in that The direct current power supply interface is connected in parallel with a first indicating lamp and a second indicating lamp, a switch 1KA2 is connected on the first indicating lamp, a switch 3KA2 is connected on the second indicating lamp, The first indicating lamp and the second indicating lamp are connected in parallel with the control circuit.

10. The analog signal test apparatus of claim 9, wherein A switch 1SA1 is arranged between the control circuit and the direct current power supply interface.

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