CN206710511U - Long-distance intelligent nuclear phase instrument phase-detection end - Google Patents

Abstract

The phase detection terminal of the remote intelligent phase nuclear instrument includes a shell, a metal head, an inductive voltage sensor U1, an amplifier, an AD conversion module, a wireless communication module, an MCU controller, an indicator light and a power module, and a threaded connection hole is provided at the bottom of the shell; The power module includes a primary power circuit and a secondary power circuit; the primary power circuit includes a jog switch button SB, which is connected in series with the power supply circuit of the inductive voltage sensor U1 and the MCU controller. After the threaded column is connected to the threaded connection hole, the threaded column presses the jog switch button SB; the secondary power circuit includes the power chip U2 and its external circuit, and the power chip U2 outputs the voltage VCC1 through its external circuit as an indicator light and wireless communication The power supply of the module, VCC2 is used as the power supply of the amplifier and AD conversion module. The utility model avoids unnecessary waste of electric energy during the nuclear phase operation process and prolongs the service life of the battery.

Description

Phase detection terminal of remote intelligent phase nuclear instrument

technical field

The utility model relates to a phase detection terminal of a remote intelligent nuclear phase instrument.

Background technique

During the actual operation of the power system, it is often necessary to carry out phase verification work. Before substations and transmission lines are put into operation after new construction, reconstruction and expansion, and before the transmission line is overhauled and delivered to users, a three-phase circuit phase verification test must be carried out. , to ensure that the three-phase phase sequence of the power equipment put into operation is consistent. The remote intelligent wireless phase nuclear instrument is an important tool for phase nuclear work at present. It includes a host, an XY phase detection terminal and an insulating rod. In the power-on state, the battery is not durable, and the battery needs to be replaced frequently. Therefore, it is necessary to design a phase detection terminal that can minimize the power loss of the phase detection terminal during the phase nuclear process. Moreover, the metal head on the current phase detection end is inconvenient when it is suspended on the cable or when it is in contact with the cable, and it is easy to fall off. Therefore, improving the metal head on the phase detection end makes it convenient to hang and directly contact the cable. Greatly improve the efficiency of nuclear phase work.

Utility model content

In order to overcome the problems existing in the above-mentioned prior art, the purpose of this utility model is to provide a remote intelligent phase detection device with low power consumption that avoids unnecessary waste of electric energy and prolongs the service life of the battery during the phase operation process. end.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a phase detection terminal of a remote intelligent phase nuclear instrument, which includes a shell, a metal head and an inductive voltage sensor U1 placed in the shell, an amplifier, an AD conversion module, Wireless communication module, MCU controller, indicator light and power supply module, the bottom of described housing is provided with the threaded connection hole that is connected with the threaded post of insulating bar front end; It is characterized in that, described power supply module comprises primary power supply circuit and two Level power supply circuit; the first level power supply circuit includes a jog switch button SB, the jog switch button SB is connected in series in the power supply circuit of the inductive voltage sensor U1 and the MCU controller, the jog switch button SB is located in the threaded connection hole, when the threaded column at the front end of the insulating rod is connected to the threaded connection hole, the threaded column presses the inching switch button SB; the secondary power supply circuit includes a power supply Chip U2 and its external circuit, the EN pin of the power chip U2 is connected to the I/O pin of the MCU controller, and the power chip U2 outputs the voltage VCC1 through its external circuit as the indicator light and the wireless communication module. Power supply, VCC1 gets voltage VCC2 through diode D1 as the power supply of the amplifier and AD conversion module.

Preferably, the power chip U2 is a TPS54331 power chip.

Further, a key of the jog switch button SB is provided at the bottom of the threaded connection hole, and a return spring is provided between the key and the bottom of the threaded connection hole.

Further, the shell is a cylindrical shell, the metal head is in the shape of a hook, and the front end of the hook of the metal head extends downwards, then gradually approaches the cylindrical shell, and then extends outward.

The beneficial effects of the utility model are:

It adopts a first-level power supply circuit. After the phase detection terminal is connected to the insulating rod, the power supply circuit of the inductive voltage sensor U1 and the MCU controller is mechanically connected. After the inductive voltage sensor U1 detects the cable voltage, the MCU controller starts the power supply. Chip U2 supplies power to other components of the phase detection end. Only when the phase detection end is close to the cable under test is the entire device powered on, which prevents the waste of electric energy during the operation of hanging and removing the phase detection end. This method maximizes It saves the power of the battery and prolongs the service life of the battery.

The design of the metal head structure can facilitate the phase detection end to be hung on the cable. During operation, the phase detection end is higher than the cable, and then the cable is attached to the insulating rod, and then the insulating rod is pulled down, and the cable can be snapped into the metal head, which is easy to operate. And will not fall off.

Description of drawings

In order to illustrate the technical solution of the utility model more clearly, the following will briefly introduce the accompanying drawings required in the description of the embodiments or prior art.

Fig. 1 is a block diagram of the utility model;

Fig. 2 is a partial circuit schematic diagram of the utility model;

Fig. 3 is a schematic structural diagram of a phase detection terminal of the present invention;

FIG. 4 is an enlarged view of part A in FIG. 3 .

detailed description

Below in conjunction with accompanying drawing 1-4 the specific embodiment of the utility model is described in detail:

As shown in Fig. 1 and Fig. 3, the phase detection end of the remote intelligent nuclear phase instrument of the present utility model includes a shell 1, a metal head 2, and an inductive voltage sensor U1 placed in the shell 1, an amplifier, an AD conversion module, and a wireless communication module , an MCU controller, an indicator light and a power module, the inductive voltage sensor U1 is connected to an amplifier, the amplifier is connected to an AD conversion module, and the AD conversion module is connected to the MCU controller. The wireless communication module and the indicator light are respectively connected with the MCU controller. The power supply module includes a primary power circuit and a secondary power circuit, the primary power circuit adopts a mechanical switch, and the secondary power circuit is connected with the MCU controller, and the MCU controller controls on-off. A threaded connection hole 11 connected to the threaded column at the front end of the insulating rod is provided at the bottom of the housing 1 .

It should be noted that Fig. 2 only includes the MCU controller, the inductive voltage sensor U1 and some circuits of the power module, and the rest of the circuits are the same as those of existing products, so they will not be repeated here. As shown in Figure 2, the primary power supply circuit includes a jog switch button SB, the jog switch button SB is connected in series in the power supply circuit of the inductive voltage sensor U1 and the MCU controller, and the jog switch button SB is pressed. After the above inching switch button SB is turned on, the external power supply VIN is connected, and the inductive voltage sensor U1 and the MCU controller are powered on. As shown in Figure 3, the inching switch button SB is located in the threaded connection hole, when the threaded column at the front end of the insulating rod is connected to the threaded connection hole, the threaded column presses the inching switch button SB. The threaded column will push against the button 3 during the downward movement, and when the threaded column is completely screwed into the threaded connection hole, the threaded column just presses the button 3. Preferably, the button 3 of the jog switch button SB is set at the bottom of the threaded connection hole 11, a return spring 4 is arranged between the bottom of the button 3 and the threaded connection hole 11, and the bottom of the button 3 is provided with a touch button. After pressing the button 3, the contacts are connected to conduct electricity. The structure of the button 3 is T-shaped, the thin end is located in the return spring 4, the thick end is in contact with the threaded column, and the diameter of the thick end is greater than the diameter of the threaded connection hole, so that the button 3 is placed by the threaded connection hole 11 and the button 3 The steps formed at the joints of the cavities are blocked to prevent the key 3 from leaking out of the threaded connection hole 11.

As shown in Figure 2, the secondary power supply circuit includes a power supply chip U2 and its external circuit, which is the basic peripheral circuit of the power supply chip TPS54331, including resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, capacitor The connections between C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, capacitor C6 and diode D2 are shown in Fig. 2 and will not be described in detail here. In this embodiment, the power chip U2 is a TPS54331 power chip. The EN pin of the power supply chip U2 is connected to the I/O pin of the MCU controller, and the power supply chip U2 outputs voltage VCC1 through its external circuit as the power supply of the indicator light L1 and the wireless communication module, and the voltage VCC1 passes through the diode The voltage VCC2 obtained by limiting the voltage of D1 is used as the power supply of the amplifier and the AD conversion module, and the capacitor C7 is a filter capacitor.

In order to hang the cable conveniently and prevent the hook from falling off, the shell 1 is a cylindrical shell, and the metal head 2 is in the shape of a hook. The front end of the hook of the metal head 2 extends downwards, and then gradually approaches the cylindrical shell 1, and then Extend outward to form the shape shown in Figure 3. During operation, the phase detection end is higher than the cable, and then the cable is attached to the insulating rod, and then the insulating rod is pulled down, and the cable can be clamped into the metal head, which is easy to operate and will not fall off. Moreover, the design of the metal head 2 can also be conveniently directly contacted with the cable. As shown in Figure 3, the position where the metal head 2 is close to the shell 1 is a recessed part 21, which can be easily contacted with the cable, so there is no need to Replace the metal head of the straight rod.

The above described preferred embodiments and examples of the utility model in detail in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned implementation and examples, for those of ordinary skill in the art, without departing from Under the premise of the idea of the utility model, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims (4)

1. A remote intelligent phase detector phase detection terminal, which includes a shell, a metal head and an inductive voltage sensor U1 placed in the shell, an amplifier, an AD conversion module, a wireless communication module, an MCU controller, an indicator light and a power supply module , the bottom of the shell is provided with a threaded connection hole connected to the threaded column at the front end of the insulating rod; it is characterized in that the power module includes a primary power circuit and a secondary power circuit; the primary power circuit includes a point Move the switch button SB, the inching switch button SB is connected in series in the power supply circuit of the inductive voltage sensor U1 and the MCU controller, the inching switch button SB is located in the threaded connection hole, when the insulation After the threaded column at the front end of the rod is connected to the threaded connection hole, the threaded column presses the inching switch button SB; the secondary power supply circuit includes a power chip U2 and its external circuit, and the power chip U2 The EN pin is connected to the I/O pin of the MCU controller, and the power chip U2 outputs the voltage VCC1 through its external circuit as the power supply of the indicator light and the wireless communication module, and VCC1 obtains the voltage VCC2 through the diode D1 as the amplifier and AD Convert the power supply of the module. 2. The phase detection terminal of the remote intelligent phase nuclear instrument according to claim 1, wherein the power chip U2 is a TPS54331 power chip. 3. The remote intelligent phase detection device phase detection terminal according to claim 1, characterized in that, the button of the jog switch button SB is set at the bottom of the threaded connection hole, between the button and the threaded connection hole A return spring is arranged between the bottoms. 4. The remote intelligent phase detector phase detection terminal according to claim 1, wherein the shell is a cylindrical shell, the metal head is in the shape of a hook, and the hook front end of the metal head extends downwards, and then gradually close to the cylindrical shell, and then extend outward.