Remote monitoring RTU terminal

Abstract

The utility model relates to the technical field of remote monitoring RTU equipment, in particular to a remote monitoring RTU terminal which comprises a shell, a terminal strip is arranged in the shell, the terminal strip is composed of a plurality of terminals, each terminal comprises a base and a wiring part, a through wiring cavity is formed in the middle of each wiring part, and a wire tightening frame is arranged in each wiring cavity; a through detection cavity is formed above the wiring cavity, a thin film pressure sensor and a thermistor are arranged in the detection cavity, and the thin film pressure sensor and the thermistor are electrically connected with a pressing indicator lamp and an overheating indicator lamp respectively; no matter the RTU terminal is installed, used or overhauled, the tightness condition and the overheating condition of terminal wiring can be judged in real time through the pressing indicator lamp.

Description

Technical Field

[0001] This application relates to the field of remote monitoring RTU equipment technology, and in particular to a remote monitoring RTU terminal. Background Technology

[0002] The statements in this section are merely background information related to this application and do not necessarily constitute prior art.

[0003] A Remote Terminal Unit (RTU) is a special computer measurement and control unit with a modular structure designed for long communication distances and harsh industrial environments. It connects the end-point detection instruments and actuators to the main computer in the remote control center, and has remote data acquisition, control and communication functions. It can receive operation commands from the main computer and control the actions of the end-point actuators.

[0004] RTU terminals have numerous signal input and output terminals. In practical applications, signal loss and terminal overheating often occur due to loose wiring at these terminals. In severe cases, overheating can cause fires, damaging the entire RTU terminal. Even if the terminals are securely fastened during installation, they can loosen over time due to environmental factors such as vibration and sun exposure. Therefore, field personnel need to periodically tighten the input and output terminals inside the RTU terminal. Since it is difficult to identify which terminal is malfunctioning, it is often necessary to tighten all terminals, which is time-consuming, labor-intensive, and causes great inconvenience to the staff.

[0005] Therefore, it is necessary to provide a remote monitoring RTU terminal to solve the above-mentioned technical problems. Summary of the Invention

[0006] Based on this, and in response to the aforementioned technical problems, this application provides a remote monitoring RTU terminal.

[0007] The technical solution adopted in this application to solve the problems existing in the prior art is:

[0008] This application discloses a remote monitoring RTU terminal, including a housing, within which a terminal block is provided. The terminal block consists of a plurality of terminals, including:

[0009] The base is detachably connected to the housing at the bottom and fixedly connected to the wiring section at the top.

[0010] The wiring section has a through wiring cavity in the middle, and a tensioning frame is installed inside the wiring cavity; a through detection cavity is opened above the wiring cavity, and a thin-film pressure sensor is installed inside the detection cavity; the thin-film pressure sensor is electrically connected to the clamping indicator light.

[0011] Tighten the screw, turn it through the top of the wiring section and connect it to the threaded connection of the wire frame.

[0012] Preferably,

[0013] The thin-film pressure sensor is a force-sensitive resistor.

[0014] Preferably,

[0015] One end of the force-sensitive resistor is connected to the base of transistor VT1, one end of resistor R2, and one end of resistor R1;

[0016] The other end of the force-sensitive resistor and the other end of the resistor R2 are connected to the collector of the transistor VT1 and the positive terminal Vcc of the power supply.

[0017] The emitter of transistor VT1 is connected to one end of the clamping indicator light, and the other end of the clamping indicator light is connected to one end of resistor R3.

[0018] The other end of resistor R1 and the other end of resistor R3 are both connected to the negative terminal of the power supply.

[0019] Preferably,

[0020] The clamping indicator light is a light-emitting diode (LED1).

[0021] Preferably,

[0022] A second partition is fixedly installed in the upper middle of the wiring section, and a pressure indicator light is fixedly installed above the second partition; a wiring channel communicating with the detection chamber is formed inside the second partition.

[0023] Preferably,

[0024] An overheat indicator light, which is a light-emitting diode (LED2), is also fixedly installed above the second partition.

[0025] The detection chamber is also equipped with a thermistor RT.

[0026] One end of the thermistor RT is connected to the base of the transistor VT2, one end of resistor R5, and one end of resistor R4;

[0027] The other end of resistor R5 is connected to the collector of transistor VT2 and the positive power supply Vcc;

[0028] The emitter of transistor VT2 is connected to one end of the overheat indicator light, and the other end of the overheat indicator light is connected to one end of resistor R6.

[0029] The other end of the thermistor RT, the other end of resistor R4, and the other end of resistor R6 are all connected to the negative terminal of the power supply.

[0030] Preferably,

[0031] The housing has a cable inlet and a heat dissipation vent;

[0032] The housing is equipped with a mounting rail, and the terminal block is detachably connected to the housing via the mounting rail.

[0033] Preferably,

[0034] The base includes a snap-fit ​​part and a pressing part that are fixedly connected to each other; the snap-fit ​​part and the pressing part are respectively connected to both sides of the mounting guide rail;

[0035] After the fastening part is fastened to one side of the mounting rail, the base can be fixed on the mounting rail by pressing the pressing part against the other side of the rail.

[0036] Preferably,

[0037] The base has a first partition fixed on both sides.

[0038] Preferably,

[0039] A heat dissipation cavity is formed in the lower middle part of the base.

[0040] Compared with the prior art, the beneficial effects of this application are as follows:

[0041] 1. When installing the RTU terminal for the first time, the clamping indicator light can be used to determine the degree of clamping of the terminals, ensuring that each terminal is clamped.

[0042] 2. When using the RTU terminal, the clamping indicator light can be used to determine whether the terminal wiring is loose, and the overheat indicator light can be used to determine whether the terminal is overheating.

[0043] 3. During maintenance, simply tighten the terminals where the pressure indicator light is not on; for terminals where the overheat indicator light is on, check for loose connections, short circuits in the load circuit, etc., to promptly identify circuit problems.

[0044] 4. The heat dissipation cavity design facilitates heat dissipation from the terminals. Attached Figure Description

[0045] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0046] Figure 1 This is a schematic diagram of the internal structure of a remote monitoring RTU terminal after removing the cover plate, according to this application.

[0047] Figure 2 for Figure 1 A schematic diagram of the overall structure of the internal terminals of a remote monitoring RTU terminal according to this application.

[0048] Figure 3 for Figure 2 Schematic diagram of the internal cross-sectional structure of the middle terminal.

[0049] Figure 4 for Figure 3 Enlarged view of a portion of region A in the middle.

[0050] Figure 5 This is a schematic diagram of the electrical connection of the clamping indicator light of a remote monitoring RTU terminal according to this application.

[0051] Figure 6 This is a schematic diagram of the electrical connection of an overheat indicator light for a remote monitoring RTU terminal according to this application.

[0052] In the picture:

[0053] 1. Shell,

[0054] 2. Terminal, 20. First partition,

[0055] 21. Base; 210. Fastening part; 211. Pressing part; 212. Heat dissipation cavity.

[0056] 22. Wiring section; 220. Tightening frame; 221. Detection chamber; 222. Thin-film pressure sensor.

[0057] 23. Second partition; 230. Cable routing channel.

[0058] 24. Fastening screws; 25. Tightening indicator light; 26. Overheat indicator light; 27. Wiring hole.

[0059] 3. Cable inlet; 4. Heat dissipation vent; 5. Mounting rail. Detailed Implementation

[0060] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0061] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0062] In this disclosure, terms such as "upper," "lower," "left," "right," "front," "back," "vertical," "horizontal," "side," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely relational terms determined for the convenience of describing the structural relationship of the various components or elements in this disclosure, and do not specifically refer to any component or element in this disclosure, nor should they be construed as limiting this disclosure.

[0063] refer to Figures 1 to 4This application discloses a remote monitoring RTU terminal, including a housing 1, within which a terminal block is provided, the terminal block consisting of a plurality of terminals 2. Figure 1 A cover plate, not shown in the figure, is provided on the housing 1. In practical applications, the cover plate can be designed to be detachably connected to the housing 1; the terminal 2 includes:

[0064] The base 21 is detachably connected to the housing 1 at its lower end and is fixedly connected to the wiring part 22 at its upper end.

[0065] The wiring section 22 has a through wiring cavity in the middle, and a tensioning frame 220 is provided inside the wiring cavity; a through detection cavity 221 is provided above the wiring cavity, and a thin film pressure sensor 222 is provided inside the detection cavity 221; the thin film pressure sensor 222 is electrically connected to the clamping indicator light 25.

[0066] The fastening screw 24, after being rotated through the top of the wiring part 22, is threaded into the wire frame 220.

[0067] In some embodiments, the thin-film pressure sensor 222 is a force-sensitive resistor. (Reference) Figure 5 One end of the force-sensitive resistor is connected to the base of transistor VT1, one end of resistor R2, and one end of resistor R1; the other end of the force-sensitive resistor and the other end of resistor R2 are connected to the collector of transistor VT1 and the positive terminal Vcc of the power supply; the emitter of transistor VT1 is connected to one end of the clamping indicator light 25, and the other end of the clamping indicator light 25 is connected to one end of resistor R3; the other ends of resistors R1 and R3 are both connected to the negative terminal of the power supply. Figure 3 In the diagram, the pressure indicator 25 is LED1, and the force-sensitive resistor is the resistor RF shown in the figure.

[0068] refer to Figure 3 as well as Figure 4 After tightening the fastening screw 24 to secure the wiring, the force-sensitive resistor RF will be under pressure, and its resistance will decrease. (Refer to...) Figure 5 When the resistance of the force-sensitive resistor RF decreases, the voltage drop across resistor R1 increases, causing transistor VT1 to conduct, thus energizing LED1 and illuminating the clamping indicator light 25. In practical use, the clamping indicator light 25 will only illuminate after the fastening screw 24 is tightened completely. When the wiring is loose, the clamping indicator light 25 will turn off. If, during on-site inspection, the clamping indicator light 25 is off, it indicates a loose connection and the wiring needs to be tightened.

[0069] In some embodiments, a second partition 23 is fixedly provided above the middle of the wiring part 22, and a pressure indicator light 25 is fixedly provided above the second partition 23; a wiring channel 230 communicating with the detection cavity 221 is formed inside the second partition 23, and a wiring hole 27 communicating with the wiring channel 230 is provided on the side of the second partition 23.

[0070] In some embodiments, an overheat indicator light 26 is fixedly provided above the second partition 23. The overheat indicator light 26 is a light-emitting diode (LED2). A thermistor RT is also provided in the detection cavity 221. One end of the thermistor RT is connected to the base of transistor VT2, one end of resistor R5, and one end of resistor R4. The other end of resistor R5 is connected to the collector of transistor VT2 and the positive terminal Vcc of the power supply. The emitter of transistor VT2 is connected to one end of the overheat indicator light 26, and the other end of the overheat indicator light 26 is connected to one end of resistor R6. The other ends of the thermistor RT, resistor R4, and resistor R6 are all connected to the negative terminal of the power supply.

[0071] The purpose of the above embodiments is to prevent overheating at the wiring terminals. (Refer to...) Figure 6 In this application, the thermistor RT is selected with a positive coefficient, that is, the resistance of the thermistor RT increases when the temperature rises. When the resistance of the thermistor RT increases, the transistor VT2 is turned on, thereby causing the light-emitting diode LED2, i.e. the overheat indicator 26, to light up, reminding the on-site personnel that the terminal 2 is overheated and needs to be dealt with in time.

[0072] It should be noted that the positive VCC and negative terminals of the power supply can be the power supply of the RTU terminal, or a battery can be used. Alternatively, a photovoltaic panel can be added to the RTU terminal to charge the battery. These are common techniques used by those skilled in the art and will not be elaborated further.

[0073] In this application, the housing 1 is provided with a cable inlet 3 and a heat dissipation outlet 4; a mounting rail 5 is fixedly provided inside the housing 1, and the terminal block is detachably connected to the housing 1 through the mounting rail 5.

[0074] In some embodiments, the base 21 includes a fastening portion 210 and a pressing portion 211 that are fixedly connected to each other; the fastening portion 210 and the pressing portion 211 are respectively engaged with both sides of the mounting guide rail 5; after the fastening portion 210 is fastened to one side of the mounting guide rail 5, the base 21 can be fixed to the mounting guide rail 5 by pressing the pressing portion 211 to the other side of the guide rail 5; a first partition 20 is fixedly provided on both sides of the base 21 to serve as insulation. A heat dissipation cavity 212 is formed in the lower middle part of the base 21, which enables the terminal 2 to dissipate heat better.

[0075] This application discloses a remote monitoring RTU terminal. Whether the RTU terminal is being installed for the first time, in normal use, or under maintenance, it only needs to be powered on to determine the degree of terminal clamping through the clamping indicator light and to promptly detect abnormalities in the terminal circuit through the overheat indicator light.

[0076] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0077] While the specific embodiments of this application have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this application. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this application are still within the scope of protection of this application.

Claims

1. A remote monitoring RTU terminal comprising a housing (1), a terminal strip is arranged in the housing (1), the terminal strip is composed of a plurality of terminals (2), characterized in that, Terminal (2) includes: The base (21) is detachably connected to the housing (1) at its lower end and is fixedly connected to the wiring part (22) at its upper end; The wiring section (22) has a through wiring cavity in the middle, and a tensioning frame (220) is provided inside the wiring cavity; a through detection cavity (221) is provided above the wiring cavity, and a thin film pressure sensor (222) is provided inside the detection cavity (221); the thin film pressure sensor (222) is electrically connected to the clamping indicator light (25); The fastening screw (24) is rotated through the top of the wiring section (22) and then threaded into the wire frame (220).

2. The remote monitoring RTU terminal according to claim 1, characterized in that: The thin-film pressure sensor (222) is a force-sensitive resistor.

3. The remote monitoring RTU terminal according to claim 2, characterized in that: One end of the force-sensitive resistor is connected to the base of transistor VT1, one end of resistor R2, and one end of resistor R1; The other end of the force-sensitive resistor and the other end of the resistor R2 are connected to the collector of the transistor VT1 and the positive terminal Vcc of the power supply. The emitter of transistor VT1 is connected to one end of the clamping indicator (25), and the other end of the clamping indicator (25) is connected to one end of resistor R3; The other end of resistor R1 and the other end of resistor R3 are both connected to the negative terminal of the power supply.

4. A remote monitoring RTU terminal according to claim 3, characterized in that: The clamping indicator (25) is a light-emitting diode (LED1).

5. A remote monitoring RTU terminal according to claim 1, characterized in that: A second partition (23) is fixedly provided above the middle of the wiring part (22), and a pressure indicator light (25) is fixedly provided above the second partition (23); a wiring channel (230) communicating with the detection chamber (221) is formed inside the second partition (23).

6. A remote monitoring RTU terminal according to claim 5, characterized in that: An overheat indicator light (26) is also fixedly installed above the second partition (23). The overheat indicator light (26) is a light-emitting diode (LED2). The detection chamber (221) is also equipped with a thermistor RT. One end of the thermistor RT is connected to the base of transistor VT2, one end of resistor R5, and one end of resistor R4; The other end of resistor R5 is connected to the collector of transistor VT2 and the positive power supply Vcc; The emitter of transistor VT2 is connected to one end of the overheat indicator (26), and the other end of the overheat indicator (26) is connected to one end of resistor R6; The other end of the thermistor RT, the other end of resistor R4, and the other end of resistor R6 are all connected to the negative terminal of the power supply.

7. A remote monitoring RTU terminal according to claim 1, characterized in that: The housing (1) is provided with a cable inlet (3) and a heat dissipation vent (4); The housing (1) is fixedly provided with a mounting rail (5), and the terminal block is detachably connected to the housing (1) through the mounting rail (5).

8. A remote monitoring RTU terminal according to claim 7, characterized in that: The base (21) includes a fastening part (210) and a pressing part (211) that are fixedly connected to each other; the fastening part (210) and the pressing part (211) are respectively connected to the two sides of the mounting guide rail (5); After the fastening part (210) is fastened to one side of the mounting rail (5), the base (21) can be fixed on the mounting rail (5) by pressing the pressing part (211) on the other side of the rail (5).

9. A remote monitoring RTU terminal according to claim 8, characterized in that: The base (21) has a first partition (20) fixed on both sides.

10. A remote monitoring RTU terminal according to claim 9, characterized in that: A heat dissipation cavity (212) is formed in the lower middle part of the base (21).

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