CN106771800A - A kind of common core cable detection means - Google Patents

Abstract

The invention discloses a coaxial cable detection device, which includes a signal receiving and processing component and a power supply component, wherein: a first connection indicator, a first switch, and one end of a rechargeable battery are connected in series in sequence; the other end of the rechargeable battery One end, the second switch, and the second on indicator are serially connected in sequence; the universal interface of the external power supply is connected in parallel with the photovoltaic module and the rechargeable battery; the charging/power supply control switch is connected to the circuit of the universal interface of the external power supply and the photovoltaic module . The above-mentioned device is used to detect whether the two ends of the cable core are the same cable core, the accuracy rate is high, the operation is simple and convenient, and the power of the power supply component carried is sustainable. The external power supply can be connected indoors through the external power supply universal interface, and it can also be used outdoors. The battery can be charged through the photovoltaic module; thereby ensuring that the power supply module will not interrupt the power supply during the working process of the device.

Description

A coaxial cable detection device

technical field

The invention relates to a coaxial cable detection device.

Background technique

When building or renovating a substation, it is necessary to check the cable core when rewiring or new wiring. The tester usually uses a multimeter or a coaxial cable detection device to judge whether the wiring at both ends of the cable core is correct. Accuracy, complex operation, and a large number of cable cores, two people need to operate at the same time to complete the check, which greatly reduces the work efficiency and the reliability of the core check. However, if the same-core cable detection device is used, the power supply of the built-in power supply is limited. Once the power is used up, it will not be able to continue to work, resulting in a limited workload for checking and a short duration. How can we improve efficiency while ensuring continuous power supply? , is an urgent problem to be solved by people in the same industry.

Contents of the invention

In view of the above problems, embodiments of the present invention provide a coaxial cable detection device that overcomes the above problems or at least partially solves the above problems.

As an aspect of an embodiment of the present invention, it relates to a coaxial cable detection device, which includes: a signal receiving and processing component and a power supply component;

The signal receiving and processing component includes: a first on indicator, a first switch, a second switch and a second on indicator;

The power supply component includes: a general interface for external power supply, a photovoltaic module, a rechargeable battery and a charge/power supply control switch;

in:

One end of the universal interface of the external power supply is connected to the charging/power supply control switch;

When the charging/power supply control switch closes the charging terminal, the rechargeable battery, the photovoltaic module and the two ends of the universal interface of the external power supply are connected in parallel;

After the two ends of the rechargeable battery, the photovoltaic module and the universal interface of the external power supply are connected in parallel, one end is connected in series with the first switch and the first on indicator; the other end is connected in series with the second switch and the second on indicator;

The first connection indicator and the second connection indicator respectively have wire core detection ends, which are used to respectively connect the two ends of the tested wire core;

When the charging/power supply control switch closes the power supply end, the universal interface of the external power supply is connected to the second on indicator.

In one embodiment, the power supply assembly further includes: an external power supply, the external power supply is connected to the general interface of the external power supply through an adapter;

The external power supply is one of the following:

AC regulated power supply, DC regulated power supply, inverter regulated power supply, switching regulated power supply.

In one embodiment, the rechargeable battery is one of the following: nickel hydrogen battery, nickel cadmium battery, lithium battery and lead acid battery.

In one embodiment, the power supply component further includes a charging management chip;

The general interface of the external power supply or the positive pole of the photovoltaic module is connected to the IN terminal of the charging management chip, and the OUT terminal of the charging management chip is connected to the positive pole of the rechargeable battery.

In one embodiment, the end of the first switch connected to the rechargeable battery is grounded through the switch; the end of the second switch connected to the rechargeable battery is grounded through the switch.

In one embodiment, in the power supply assembly, the charge/power supply control switch is a single-pole double-throw switch.

In one embodiment, said first on indicator comprises:

a first alarm and/or a first light emitting diode;

The second connection indicator includes: a second alarm and/or a second light emitting diode.

In one embodiment, the first on indicator further includes a first resistor connected in series with the first alarm and/or the first light emitting diode.

In one embodiment, the second on indicator further includes a second resistor connected in series with the second alarm and/or the second light emitting diode.

In one embodiment, the wire core detection end adopts a measuring wire clamp or a test probe.

Embodiments of the present invention at least achieve the following technical effects:

The invention discloses a coaxial cable detection device, which includes a signal receiving and processing component and a power supply component, and the signal receiving and processing component includes: a first connection indicator, a first switch, a second switch and a second connection indicator; the power supply assembly includes: a general interface for external power supply, a photovoltaic module, a rechargeable battery and a charge/power supply control switch; wherein: one end of the general interface for external power supply is connected to the charge/power supply control switch; when the charge/power supply When the control switch closes the charging end, the rechargeable battery, the photovoltaic module and the two ends of the external power universal interface are connected in parallel; after the rechargeable battery, the photovoltaic module and the two ends of the external power universal interface are connected in parallel, one end is The switch is connected in series with the first on indicator; the other end is connected in series with the second switch and the second on indicator; the first on indicator and the second on indicator respectively have wire core detection terminals for connecting the Test both ends of the wire core; when the charging/power supply control switch closes the power supply end, the universal interface of the external power supply is connected to the second on indicator. The above-mentioned device can be used to detect whether the two ends of the cable core are the same cable core. The detection accuracy of the device is high, the operation is simple and convenient, and the power supply component carried is sustainable, and the external power supply can be connected indoors through the external power supply universal interface. , plug and unplug, and the rechargeable battery can also be charged through the photovoltaic module outdoors; thus ensuring that the power supply component of the device will not interrupt the power supply during the working process, which facilitates the battery life of the device.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:

Fig. 1 is a schematic structural view of a coaxial cable detection device in an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a power supply assembly with a charge management chip in an embodiment of the present invention.

detailed description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

An embodiment of the present invention provides a coaxial cable detection device, referring to the structural diagram shown in Figure 1, the device includes: a signal receiving and processing component 1 and a power supply component 2;

The signal receiving and processing component 1 includes: a first on indicator 11, a first switch 12, a second switch 13 and a second on indicator 14;

As shown in FIG. 1 , the power supply assembly 2 includes: an external power supply universal interface 21, a photovoltaic assembly 22, a rechargeable battery 23 and a charge/power supply control switch 24;

in:

One end of the external power supply universal interface 21 is connected to the charge/power supply control switch 24;

When the charging/power supply control switch 24 closes the charging end, the rechargeable battery 23, the photovoltaic module 22 and the two ends of the external power universal interface 21 are connected in parallel;

After the rechargeable battery 23, the photovoltaic module 22 and the two ends of the external power universal interface 21 are connected in parallel, one end is connected in series with the first switch 12 and the first on indicator 11; the other end is connected with the second switch 13 and the second connection. Pass indicator 14 in series;

The first connection indicator 11 and the second connection indicator 14 respectively have wire core detection terminals for respectively connecting the two ends of the tested wire core;

When the charging/power supply control switch 24 closes the power supply end, the external power universal interface 21 is connected to the second on indicator 14 .

Using the above device, connect the wire core at one end of the cable to be detected to the wire core detection end of the first connection indicator 11, and connect the wire core at the other end of the cable to the wire core of the second connection indicator 14 On the detection end, when the wire cores of the cable are the same, the first connection indicator and the second connection indicator will remind that the two ends of the detected cable core are correct.

The above-mentioned device is used to detect whether the two ends of the cable core are the same cable core, the accuracy is high, the operation is simple and convenient, and the power of the power supply component carried is sustainable, and the external power supply can be connected indoors through the external power supply universal interface, plug and play The battery can also be charged through the photovoltaic module outdoors; thus ensuring that the power supply component of the device will not interrupt the power supply during the working process, which facilitates the battery life of the device.

In one embodiment, the above-mentioned power supply assembly can also include an external power supply, and the external power supply can be connected to the general interface of the above-mentioned external power supply through a matching adapter, which is plug and unplug, and the operation is convenient and simple; the charging/power supply control connected through the general interface of the external power supply The switch can directly supply power for the coaxial cable detection device or charge the rechargeable battery to ensure continuous power supply without interruption, thereby ensuring that the device has sufficient power when it continues to work under heavy workload, and improves work time.

Among them, the external power supply can be one of AC regulated power supply, DC regulated power supply, inverter regulated power supply, and switching regulated power supply. For example, a DC regulated power supply with an output voltage of 5V and a current of 2-3A is used. Connect the corresponding adapter to continuously provide power for the device. The embodiments of the present disclosure do not limit this, as long as the external power supply can provide stable voltage and current within the range of the device.

In one embodiment, a suitable type of rechargeable battery can be selected according to the environment in which the device is used, such as: Ni-MH battery, Ni-Cd battery, Li-ion battery and lead-acid battery. The advantages of adopting rechargeable batteries are economy, environmental protection, sufficient power, suitable for high power and long-time use.

For example, it is easy to carry and use a smaller lithium battery: voltage: 3.7V, service life: 500 times, discharge temperature: -20 degrees to 60 degrees, charging temperature: 0 degrees to 45 degrees, such as the improved type of lithium battery, There is no battery fluid, but a polymer electrolyte is used instead, which can be made into various shapes and so on. For another example, depending on the duration, lead-acid batteries with longer charging and discharging times can also be used. Likewise, the embodiment of the present disclosure does not limit this, and any rechargeable battery that can realize the charging and discharging function may be used.

In one embodiment, as shown in FIG. 2 , the power supply assembly further includes a charging management chip, the universal interface of the external power supply or the positive electrode of the photovoltaic module is connected to the IN terminal of the charging management chip, and the OUT terminal of the charging management chip is connected to The positive electrode of the above-mentioned rechargeable battery. The above-mentioned management chip is a circuit designed to protect the rechargeable battery, which can protect the rechargeable battery from over-discharge, over-voltage, over-charge, and over-temperature, and can effectively protect the life of the rechargeable battery and the safety of users.

For example, photovoltaic modules are used to collect solar energy, and the lithium battery charging management chip BQ24200 is used to charge the power supply of the device such as a lithium battery. Referring to Figure 2, after converting solar energy into direct current, it is stored in the battery through the charging circuit, and then passed through the discharge circuit. Supply the device according to the actual power requirements. The overall design includes: photovoltaic modules, lithium batteries, and lithium battery charging management chips. Its circuit is shown in Figure 2. There are two main issues that must be paid attention to in the use of photovoltaic modules: one is the selection of power, and the other is the selection of voltage. The working voltage of BQ24200 is: the minimum threshold voltage is 214V, and the maximum working voltage is 16.5V. The output voltage of the photovoltaic module must meet the working voltage range of B024200 to avoid damage to it. According to needs, for example, a photovoltaic module with a rated output voltage of 9V and an open circuit voltage of 10.8V can be selected for power supply.

Referring to FIG. 2 , regarding the temperature limit, the real-time monitoring of the battery temperature can be realized by monitoring the voltage of the pin TS to ground. The voltage of the TS pin is generated by thermistors _RT1 , _RT2 and Vcc; according to the level of the TS pin, the charging of the battery is protected against high and low temperatures. When the level on the TS pin is between its internal voltages, the BQ24200 charges the battery, otherwise, the charging stops. The selection method of R _T1 and R _T2 of the thermistor is as follows:

For a thermistor with a negative temperature coefficient:

For a thermistor with a positive temperature coefficient:

Among them: RT _C is the resistance value of the thermistor at low temperature; RT _H is the resistance value of the thermistor at high temperature.

In one embodiment, as shown in FIG. 1 , the end of the first switch connected to the rechargeable battery is grounded through the switch; the end of the second switch connected to the rechargeable battery is grounded through the switch. The function of grounding is mainly to prevent people from electric shock, damage to equipment and lines, prevent fire and lightning strikes, prevent electrostatic damage and ensure the normal operation of the power system.

In one embodiment, as shown in FIG. 1 , the charging/power supply control switch is a single-pole double-throw switch, and one switch can be toggled to both sides to achieve double control. In the case of an external power source, there is an option to either power the unit only, or to charge a rechargeable battery. Both of the above situations are to ensure that the power of the device can continue to last.

In one embodiment, as shown in FIG. 1, the above-mentioned first on indicator 11 may include:

The first alarm and/or the first light-emitting diode; the above-mentioned second connection indicator 14 also includes: the second alarm and/or the second light-emitting diode, when the same cable core is detected, the alarm can sound an alarm Or emit secondary light to light alarm. When the first connection indicator includes the first alarm and the first light-emitting diode at the same time, the two can be connected in series, and when the detection is correct for the same wire core, sound and light warning will be issued at the same time. Likewise, the structure of the second on indicator 14 is similar to that of the first on indicator 11 , and reference may be made to the above-mentioned embodiments, and details are not repeated here.

In one embodiment, the above-mentioned first on indicator 11 may further include a first resistor connected in series with the first alarm and/or the first light-emitting diode, and the first resistor may act as a divider in the circuit. Pressure, shunt effect. Wherein the first alarm can be, for example, a small horn.

In one embodiment, as shown in FIG. 1 , the structure of the second on indicator 14 is similar to that of the first on indicator 11 , and reference may be made to the above-mentioned embodiments, which will not be repeated here.

In one embodiment, the above-mentioned wire core detection end adopts a measuring wire clamp or a test probe, which is not limited in the embodiment of the present disclosure, and it is only necessary to connect the wire core of the cable to be detected conveniently.

The invention discloses a coaxial cable detection device, which includes a signal receiving and processing component and a power supply component, and the signal receiving and processing component includes: a first connection indicator, a first switch, a second switch and a second connection indicator; the power supply assembly includes: a general interface for external power supply, a photovoltaic module, a rechargeable battery and a charge/power supply control switch; wherein: one end of the general interface for external power supply is connected to the charge/power supply control switch; when the charge/power supply When the control switch closes the charging end, the rechargeable battery, the photovoltaic module and the two ends of the external power universal interface are connected in parallel; after the rechargeable battery, the photovoltaic module and the two ends of the external power universal interface are connected in parallel, one end is The switch is connected in series with the first on indicator; the other end is connected in series with the second switch and the second on indicator; the first on indicator and the second on indicator respectively have wire core detection terminals for connecting the Test both ends of the wire core; when the charging/power supply control switch closes the power supply end, the universal interface of the external power supply is connected to the second on indicator. The above-mentioned device can be used to detect whether the two ends of the cable core are the same cable core. The detection accuracy of the device is high, the operation is simple and convenient, and the power supply component carried is sustainable, and the external power supply can be connected indoors through the external power supply universal interface. , plug and unplug, and the rechargeable battery can also be charged through the photovoltaic module outdoors; thus ensuring that the power supply component of the device will not interrupt the power supply during the working process, which facilitates the battery life of the device.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (10)

1. A coaxial cable detection device, characterized in that the device comprises a signal receiving and processing assembly and a power supply assembly; The signal receiving and processing component includes: a first on indicator, a first switch, a second switch and a second on indicator; The power supply component includes: a general interface for external power supply, a photovoltaic module, a rechargeable battery and a charge/power supply control switch; in: One end of the universal interface of the external power supply is connected to the charging/power supply control switch; When the charging/power supply control switch closes the charging terminal, the rechargeable battery, the photovoltaic module and the two ends of the universal interface of the external power supply are connected in parallel; After the two ends of the rechargeable battery, the photovoltaic module and the universal interface of the external power supply are connected in parallel, one end is connected in series with the first switch and the first on indicator; the other end is connected in series with the second switch and the second on indicator; The first connection indicator and the second connection indicator respectively have wire core detection ends, which are used to respectively connect the two ends of the tested wire core; When the charging/power supply control switch closes the power supply end, the universal interface of the external power supply is connected to the second on indicator. 2. The device according to claim 1, wherein the power supply component further comprises: an external power supply, the external power supply is connected to the general interface of the external power supply through an adapter; The external power supply is one of the following: AC regulated power supply, DC regulated power supply, inverter regulated power supply, switching regulated power supply. 3. The device according to claim 1, wherein the rechargeable battery is one of the following: nickel metal hydride battery, nickel cadmium battery, lithium battery and lead acid battery. 4. The device according to claim 1, wherein the power supply component further comprises a charging management chip; The general interface of the external power supply or the positive pole of the photovoltaic module is connected to the IN terminal of the charging management chip, and the OUT terminal of the charging management chip is connected to the positive pole of the rechargeable battery. 5 . The device according to claim 1 , wherein the end of the first switch connected to the rechargeable battery is grounded through a switch; the end of the second switch connected to the rechargeable battery is grounded through a switch. 6. The device according to claim 1, wherein the charge/power supply control switch is a single pole double throw switch. 7. The apparatus of claim 1, wherein the first on indicator comprises: a first alarm and/or a first light emitting diode; The second connection indicator includes: a second alarm and/or a second light emitting diode. 8. The device according to claim 7, wherein the first on indicator further comprises a first resistor connected in series with the first alarm and/or the first light emitting diode . 9. The device according to claim 7, wherein the second on indicator further comprises a second resistor connected in series with the second alarm and/or the second light emitting diode . 10 . The device according to claim 1 , wherein the wire core detection end adopts a measuring wire clip or a test probe. 11 .