CN216747882U - A portable protection pressure plate voltage measuring device - Google Patents

Abstract

The utility model discloses a portable protection pressure plate voltage measuring device, which comprises a casing. The top of the casing is respectively provided with a 50V port, a 150V port and a 250V port from left to right. On the LCD display screen for displaying measurement data, the casing is provided with a plug-in type pressure plate measurement module for detecting line data, and a plug-in type pressure plate measurement module is provided next to the plug-in type pressure plate measurement module for use in conjunction with the plug-in type pressure plate measurement module. A knob-type pressure plate measurement module, a power supply module for supplying power is arranged on the front side of the knob-type pressure plate measurement module, and a voltage detection module for detecting line voltage data is arranged above the power supply module. The utility model overcomes the problem of poor operability of the traditional pressure plate voltage measuring device existing in the prior art. The utility model has the advantages of good portability, high measurement accuracy, simple operation and the like.

Description

A portable protection pressure plate voltage measuring device

technical field

The utility model relates to the field of line detection mechanisms, in particular to a portable protection pressure plate voltage measuring device.

Background technique

During the switch-off operation of the equipment recommissioning, before putting the corresponding pressure plate into operation, the voltage at both ends of the pressure plate must be measured to prevent the occurrence of misoperation. Usually, the substation operation and maintenance personnel use a multimeter to carry out the measurement work. . However, in the measurement process, there are the following three problems:

First, the multimeter is less portable. When the pressure plates that need to be invested are located in different places, such as: control room, 10kV switch room, main transformer room, etc., it is necessary to carry the multimeter with you during the switching operation process. In addition, it is large in size and heavy in weight, so there are many inconveniences.

2. There is a risk of misoperation. Since both ends of the pressure plate are DC voltage, if the measurement gear is not adjusted when using the multimeter, there is a risk of short-circuiting the ports or inaccurate measurement. Or if the measurement method is incorrect, it is easy to cause the direct short-circuit of the two measurement probes, and then there is a risk of issuing a trip and close exit command to the equipment.

Third, the multimeter has poor operability. In the process of using the multimeter, one person and two hands are required to operate the measuring pen, while another person reads the voltage value, which is inconvenient.

Therefore, there is an urgent need to invent a new type of platen voltage measuring device that is portable, reliable in operation, and accurate in measurement.

Utility model content

In order to overcome the problem of poor operability of traditional pressure plate voltage measuring devices in the prior art, the utility model now provides a portable protective pressure plate voltage measuring device which is convenient for users to operate.

A portable protection pressure plate voltage measuring device of the utility model comprises a casing, the top of the casing is respectively provided with a 50V port, a 150V port and a 250V port from left to right, and the front of the casing is provided with a port for An LCD display screen for displaying measurement data, a plug-in type pressure plate measurement module for detecting line data is arranged in the casing, and a knob for use with the plug-in type pressure plate measurement module is provided next to the plug-in type pressure plate measurement module Type pressure plate measurement module, the front side of the knob type pressure plate measurement module is provided with a power supply module for supplying power, and a voltage detection module for detecting line voltage data is arranged above the power supply module. The power supply of the power supply module The output terminal is electrically connected to the power input terminal of the voltage detection module, the signal output terminal of the voltage detection module is electrically connected to the signal receiving terminal of the LCD display screen, the input terminal of the 50V port and the input terminal of the 150V port are electrically connected. and the input end of the 250V port are respectively electrically connected with the signal acquisition end of the voltage detection module.

Preferably, the plug-in pressure plate measurement module is provided with a plug-in connecting rod, the waist of the plug-in connecting rod is equipped with a plug-in stroke switch, and the plug-in rods located on the upper and lower sides of the plug-in stroke switch are respectively inserted into the plug-in rod. A plug-in measurement pin is connected, and a plug-in extension hole for installing the plug-in measurement pin is opened at the right end of the plug-in type pressure plate measurement module.

The tops of the plug-in measurement pins of the plug-in type pressure plate measurement module of the utility model are in the shape of needles. When using, firstly push the plug-in measuring pin out of the casing and connect it electrically with the contact part of the plug-in pressure plate to be tested. At this time, the plug-in travel switch on the plug-in connecting rod is connected to the voltage detection module, so as to realize the test to be tested. measurement of pluggable pressure plates.

Preferably, the knob-type pressure plate measuring module is provided with a knob connecting rod, the knob connecting rod waist is equipped with a knob travel switch, and the knob connecting rods located on the upper and lower sides of the knob travel switch are respectively inserted with knob measuring pins, The knob-type pressure plate measurement module is provided with a knob extension hole at the right end for installing knob measurement pins.

The top of the knob measurement pin of the knob type pressure plate measurement module of the utility model is in the shape of a circle. When using, push the knob measuring pin completely out of the housing and electrically connect with the contact part of the knob-type pressure plate to be tested. At this time, the knob travel switch on the knob connecting rod is connected to the voltage detection module, so as to realize the knob-type pressure plate to be measured. Measurement.

The voltage detection module includes a voltage detection chip U1, a resistor R0, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C0 and a socket J1 as the main body. One end of the resistor R1 is an inlet end, and the One end of the resistor R4 is the outlet end, the other end of the resistor R1 is electrically connected to the input end of the 50V port and one end of the resistor R2, and the other end of the resistor R2 is electrically connected to the input end of the 150V port and the resistor R3. One end is electrically connected, the other end of the resistor R3 is electrically connected to the input end of the 250V port and the other end of the resistor R4, and one end of the resistor R4 is respectively connected to the 2 pin of the voltage detection chip U1 and the other end of the resistor R0. One end is electrically connected to one end of the socket J1, the other end of the resistor R0 is electrically connected to one end of the capacitor C0 and the 1 pin of the voltage detection chip U1, and the other end of the capacitor C0 is electrically connected to the voltage detection chip. Pin 3 of U1 is electrically connected, pin 1 of the LCD display is electrically connected to pin 4 of the voltage detection chip U1, and pin 2 of the LCD display is electrically connected to pin 5 of the voltage detection chip U1 The pins are electrically connected, the 3 pins of the LCD display screen are electrically connected to the 6 pins of the voltage detection chip U1, and the 4 pins of the LCD display screen are electrically connected to the 7 pins of the voltage detection chip U1. , the 5-pin of the described LCD display screen is electrically connected with the 8-pin of the voltage detection chip U1, the 6-pin of the described LCD display screen is electrically connected with the 9-pin of the voltage detection chip U1, the described Pin 7 of the LCD display is electrically connected to pin 10 of the voltage detection chip U1, and pin 8 of the LCD display is electrically connected to pin 11 of the voltage detection chip U1. Pin 9 is electrically connected to pin 12 of the voltage detection chip U1, pin 10 of the LCD display is electrically connected to pin 13 of the voltage detection chip U1, and pin 11 of the LCD display is electrically connected to The 14-pin of the voltage detection chip U1 is electrically connected, the 12-pin of the LCD display screen is electrically connected with the 15-pin of the voltage detection chip U1, and the 13-pin of the LCD display screen is electrically connected with the voltage detection chip U1 The 16 pins of the LCD display are electrically connected, the 14 pins of the LCD display are electrically connected to the 17 pins of the voltage detection chip U1, and the 15 pins of the LCD display are electrically connected to the 18 pins of the voltage detection chip U1. For electrical connection, the 16-pin of the LCD display screen is electrically connected to the 19-pin of the voltage detection chip U1.

The model of the voltage detection chip U1 is ICL7106, so as to realize the analog-to-digital conversion of the measured voltage.

The LCD display screen is used to display the measured voltage value across the pressing plate.

The utility model has the following beneficial effects:

1 Portability. The housing of the utility model has the advantages of small size, light weight and convenient portability, which can provide great convenience for the operation and maintenance personnel, and at the same time can effectively improve the work efficiency of the operation and maintenance personnel.

2 Accuracy. The platen voltage measurement circuit is designed based on the ICL7106 chip, which has higher accuracy. At the same time, the utility model designs a suitable measurement gear according to the actual demand for measuring the voltage, which can effectively ensure the accuracy and validity of the measurement.

3 Reliability. By designing the travel switch on the connecting rod, it can effectively ensure that the voltage measuring circuit can be opened after the measuring pin is pushed out, avoiding the need for frequent battery replacement of the device due to human negligence, and greatly improving the practicability and reliability of the device.

4 Operability. The pressure plate voltage measuring device of the utility model can be used by operation and maintenance personnel to complete the measuring task with one hand and one hand, and has significant advantages in operability.

Description of drawings

Accompanying drawing 1 is the structure schematic diagram of the utility model.

2 is a schematic diagram of the positional relationship between the plug-in type pressure plate measurement module and the knob type pressure plate measurement module of the present invention.

3 is a schematic diagram of the positional relationship between the power supply module and the voltage detection module of the present invention.

4 is a schematic structural diagram of the plug-in type pressure plate measurement module of the present invention.

5 is a schematic structural diagram of the knob-type pressure plate measuring module of the present invention.

6 is a schematic circuit diagram of the voltage detection module of the present invention.

Shell 1, 50V port 2, 150V port 3, LCD display 4, plug-in pressure plate measurement module 5, knob type pressure plate measurement module 6, power supply module 7, voltage detection module 8, plug-in link 9, plug-in stroke Switch 10, plug-in measurement pin 11, plug-in extension hole 12, knob connecting rod 13, knob travel switch 14, knob measurement pin 15, knob extension hole 16, 250V port 17.

Detailed ways

The technical solutions of the present utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

Embodiment: Further description is made according to accompanying drawings 1, 2, 3, 4, 5 and 6, a portable protection pressure plate voltage measuring device in this example includes a casing 1, The top of the casing 1 is respectively provided with a 50V port 2, a 150V port 3 and a 250V port 17 from left to right. The front of the casing 1 is provided with an LCD display screen 4 for displaying measurement data. 1 is provided with a plug-in type pressure plate measurement module 5 for detecting line data, and a knob type pressure plate measurement module 6 used in conjunction with the plug-in type pressure plate measurement module 5 is arranged next to the plug-in type pressure plate measurement module 5. The front side of the knob-type pressure plate measurement module 6 is provided with a power supply module 7 for providing power, and a voltage detection module 8 for detecting line voltage data is provided above the power supply module 7. The power output end of the power supply module 7 It is electrically connected to the power input end of the voltage detection module 8, the signal output end of the voltage detection module 8 is electrically connected to the signal receiving end of the LCD display screen 4, the input end of the 50V port 2, the 150V port 3 The input end of the 250V port 17 and the input end of the 250V port 17 are respectively electrically connected to the signal collection end of the voltage detection module 8 .

The plug-in type pressure plate measurement module 5 is provided with a plug-in connecting rod 9 , the waist of the plug-in connecting rod 9 is equipped with a plug-in stroke switch 10 , and the plug-in rod 9 is located on the upper and lower sides of the plug-in stroke switch 10 . The plug-in measurement pins 11 are respectively plugged into the plug-in type pressure plate measurement module 5 , and a plug-in extension hole 12 for installing the plug-in measurement pins 11 is opened on the right end of the plug-in type pressure plate measurement module 5 .

The knob-type pressure plate measurement module 6 is provided with a knob connecting rod 13, the knob connecting rod 13 is equipped with a knob travel switch 14 at the waist, and the knob connecting rod 13 located on the upper and lower sides of the knob travel switch 14 is respectively inserted with a knob. For the measurement pins 15 , the knob-type pressure plate measurement module 6 is provided with a knob extension hole 16 at the right end for installing the knob measurement pins 15 .

The voltage detection module 8 includes as the main body a voltage detection chip U1, a resistor R0, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C0, and a socket J1. One end of the resistor R1 is the inlet end, so the One end of the resistance R4 is the outlet end, the other end of the resistance R1 is electrically connected with the input end of the 50V port 2 and one end of the resistance R2, and the other end of the resistance R2 is electrically connected with the input end of the 150V port 3 and the input end of the resistance R2. One end of the resistor R3 is electrically connected, the other end of the resistor R3 is electrically connected to the input end of the 250V port 17 and the other end of the resistor R4, and one end of the resistor R4 is respectively connected to the 2 pin of the voltage detection chip U1 , one end of the resistor R0 is electrically connected to one end of the socket J1, the other end of the resistor R0 is electrically connected to one end of the capacitor C0 and the 1 pin of the voltage detection chip U1, and the other end of the capacitor C0 is electrically connected. It is electrically connected to pin 3 of the voltage detection chip U1, the pin 1 of the LCD display screen 4 is electrically connected to the pin 4 of the voltage detection chip U1, and the pin 2 of the LCD display screen 4 is electrically connected to the voltage The 5 pins of the detection chip U1 are electrically connected, the 3 pins of the LCD display screen 4 are electrically connected to the 6 pins of the voltage detection chip U1, and the 4 pins of the LCD display screen 4 are electrically connected to the voltage detection chip. Pin 7 of U1 is electrically connected, pin 5 of the LCD display 4 is electrically connected to pin 8 of the voltage detection chip U1, and pin 6 of the LCD display 4 is electrically connected to the voltage detection chip U1 The 9 pins are electrically connected, the 7 pins of the LCD display screen 4 are electrically connected to the 10 pins of the voltage detection chip U1, and the 8 pins of the LCD display screen 4 are electrically connected to the 11 pins of the voltage detection chip U1. The pins are electrically connected, the 9 pins of the LCD display screen 4 are electrically connected to the 12 pins of the voltage detection chip U1, and the 10 pins of the LCD display screen 4 are electrically connected to the 13 pins of the voltage detection chip U1. The 11-pin of the described LCD display screen 4 is electrically connected with the 14-pin of the voltage detection chip U1, and the 12-pin of the described LCD display screen 4 is electrically connected with the 15-pin of the voltage detection chip U1. , the 13-pin of the described LCD display screen 4 is electrically connected with the 16-pin of the voltage detection chip U1, the 14-pin of the described LCD display screen 4 is electrically connected with the 17-pin of the voltage detection chip U1, so the The 15-pin of the LCD display screen 4 is electrically connected to the 18-pin of the voltage detection chip U1, and the 16-pin of the LCD display screen 4 is electrically connected to the 19-pin of the voltage detection chip U1.

The above are only specific embodiments of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art in the field of the present utility model are all included in the present utility model. within the scope of the new patent.

Claims (4)

1. A portable protective pressure plate voltage measuring device, comprising a casing (1), the top of the casing (1) is respectively provided with a 50V port (2), a 150V port (3) and a 250V port from left to right (17), characterized in that the front of the casing (1) is provided with an LCD display screen (4) for displaying measurement data, and the casing (1) is provided with a plug-in type for detecting line data. A pressure plate measurement module (5), a knob type pressure plate measurement module (6) used in conjunction with the plug-in type pressure plate measurement module (5) is arranged next to the plug-in type pressure plate measurement module (5). A power supply module (7) for supplying power is provided on the front side of the measurement module (6), a voltage detection module (8) for detecting line voltage data is provided above the power supply module (7), and the power supply module ( The power output terminal of 7) is electrically connected to the power input terminal of the voltage detection module (8), and the signal output terminal of the voltage detection module (8) is electrically connected to the signal receiving terminal of the LCD display screen (4). The input end of the 50V port (2), the input end of the 150V port (3) and the input end of the 250V port (17) are respectively electrically connected to the signal collecting end of the voltage detection module (8). 2. A portable protection pressure plate voltage measurement device according to claim 1, characterized in that the plug-in type pressure plate measurement module (5) is provided with a plug-in connecting rod (9), A plug-in travel switch (10) is installed at the waist of the pull-out connecting rod (9), and plug-in measuring pins (11) are respectively inserted into the pull-out connecting rod (9) located on the upper and lower sides of the plug-in travel switch (10). The right end of the plug-in type pressure plate measurement module (5) is provided with plug-in extension holes (12) for installing plug-in measurement pins (11). 3. A portable protection pressure plate voltage measurement device according to claim 1, characterized in that a knob connecting rod (13) is provided in the knob type pressure plate measuring module (6), and the knob connecting rod (13) A knob travel switch (14) is installed at the waist, and knob measurement pins (15) are respectively inserted into the knob connecting rods (13) on the upper and lower sides of the knob travel switch (14). The knob type pressure plate measurement module ( 6) There is a knob extension hole (16) at the right end for installing the knob measuring pin (15). 4. A portable protective platen voltage measurement device according to claim 1, wherein the voltage detection module (8) comprises a voltage detection chip U1 as a main body, a resistor R0, a resistor R1, a resistor R2, Resistor R3, resistor R4, capacitor C0 and socket J1. One end of the resistor R1 is the inlet end, one end of the resistor R4 is the outlet end, and the other end of the resistor R1 is connected to the 50V port (2). The input end is electrically connected to one end of the resistor R2, the other end of the resistor R2 is electrically connected to the input end of the 150V port (3) and one end of the resistor R3, and the other end of the resistor R3 is electrically connected to the 250V port (17 ) and the other end of the resistor R4 are electrically connected, and one end of the resistor R4 is electrically connected to the 2 pins of the voltage detection chip U1, one end of the resistor R0 and one end of the socket J1, respectively. The other end of R0 is electrically connected to one end of the capacitor C0 and the pin 1 of the voltage detection chip U1, the other end of the capacitor C0 is electrically connected to the pin 3 of the voltage detection chip U1, and the LCD display screen Pin 1 of (4) is electrically connected to pin 4 of the voltage detection chip U1, and pin 2 of the LCD display screen (4) is electrically connected to pin 5 of the voltage detection chip U1. The 3-pin of the display screen (4) is electrically connected with the 6-pin of the voltage detection chip U1, the 4-pin of the LCD display screen (4) is electrically connected with the 7-pin of the voltage detection chip U1, and the The 5-pin of the LCD display screen (4) is electrically connected with the 8-pin of the voltage detection chip U1, the 6-pin of the LCD display screen (4) is electrically connected with the 9-pin of the voltage detection chip U1, The 7-pin of the LCD display screen (4) is electrically connected to the 10-pin of the voltage detection chip U1, and the 8-pin of the LCD display screen (4) is electrically connected to the 11-pin of the voltage detection chip U1. connection, the 9-pin of the LCD display screen (4) is electrically connected with the 12-pin of the voltage detection chip U1, the 10-pin of the LCD display screen (4) is electrically connected with the 13-pin of the voltage detection chip U1 Electrical connection, the 11 pin of the LCD display screen (4) is electrically connected to the 14 pin of the voltage detection chip U1, the 12 pin of the LCD display screen (4) is electrically connected to the 15 pin of the voltage detection chip U1 The pins are electrically connected, the 13-pin of the LCD display screen (4) is electrically connected with the 16-pin of the voltage detection chip U1, and the 14-pin of the LCD display screen (4) is electrically connected with the voltage detection chip U1 The 17-pin of the LCD display screen (4) is electrically connected with the 18-pin of the voltage detection chip U1, and the 16-pin of the LCD display screen (4) is electrically connected with the voltage detection The 19-pin of the chip U1 is electrically connected.

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