CN211603526U

CN211603526U - Drop switch monitoring terminal with current collection function

Info

Publication number: CN211603526U
Application number: CN201922435780.3U
Authority: CN
Inventors: 王泳; 李启祥
Original assignee: Jiangsu Ziyu Intelligent Technology Co ltd
Current assignee: Jiangsu Ziyu Intelligent Technology Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-29
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a drop switch monitor terminal with current collection. The terminal comprises a state detection unit, a processor, a clock chip, a wireless communication module, a power supply module and a current acquisition unit. The state detection unit of the utility model can detect the falling event of fuse, and can find the falling event through the data collected by the current collection unit when the fuse is fused but fails to fall normally; the state detection unit adopts two kinds of detection methods of switch detection and angle detection, switch detection unit can awaken up the treater when detecting the fuse and fall to send the fall incident, the clock chip still regularly awakens up the treater and carries out the initiative detection to the fuse, avoid the unusual unable normal monitoring of switch detection unit, also can detect through the contrast switch during the initiative detection and angle detection's result, judge whether switch detection unit and angle detection unit are unusual, the accuracy of fuse monitoring has been improved by a wide margin, and can prolong the live time of battery.

Description

Drop switch monitoring terminal with current collection function

Technical Field

The utility model relates to an electric power monitoring facilities field, concretely relates to drop switch monitor terminal with electric current collection.

Background

The drop-out fuse has the characteristics of economy, convenient operation, strong adaptability to outdoor environment and the like, is widely applied to 10kV distribution lines and distribution transformers, and is used as a component for protecting and carrying out equipment throwing and cutting operations. Because the drop-out fuse is not monitored in the prior art, when the drop-out fuse is fused due to overcurrent, a maintainer cannot know that the fuse breaks down in time, so that the maintainer cannot process the fault in time, and a relevant area is powered off for a long time.

In recent years, some drop-out fuse monitoring means have appeared, such as the following application numbers: 201620582342.3 discloses a passive auxiliary monitoring system of position signal of drop out fuse, it adopts ball switch or mercury switch etc. to judge whether drop out fuse appears falling, then through passive contact signal output module with wired mode with signal output, because the upper and lower both ends of drop out fuse all have high voltage circuit to there is great potential safety hazard in wired mode output signal, is unfavorable for using widely. As disclosed in the utility model patent application with application number 201410256187.1, it detects when falling off that drop out fuse appears through gravity-feed tank detection circuit, triggers the singlechip to awaken up, and this kind of working method reliability is lower. Specifically, when the gravity sensing detection circuit fails, a drop event cannot be sensed when the drop fuse falls, or the drop event information cannot be sent out, so that the drop fuse cannot be normally monitored.

The drop-out fuse is an ideal state when a fuse wire is fused, but when the fuse wire is actually used, the fuse wire cannot normally fall off when the fuse wire is fused due to the fact that the rotating resistance of a rotating shaft is large caused by the fact that the drop-out fuse is not installed correctly, sundries are blocked or the environment is bad, and under the condition, the current fused and unlawed state of the drop-out fuse cannot be detected only through means such as switch detection and angle detection, and maintainers cannot timely know that the fuse wire fails, so that the faults cannot be timely processed, and long-time power failure of related areas is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a drop switch monitor terminal with electric current collection to the not enough of prior art existence.

In order to achieve the above object, the present invention provides a drop switch monitoring terminal with current collection, comprising a housing fixed outside a fuse, wherein the housing is internally provided with a state detection unit, a processor D4, a clock chip D5, a wireless communication module, a power module and a current collection unit, the state detection unit comprises a switch detection unit and an angle detection unit respectively connected with the processor D4, the switch detection unit and the angle detection unit are both used for detecting the position state of the drop fuse, the current collection unit is used for collecting the current signal of the drop fuse, the switch detection unit wakes up the processor D4 when detecting that the drop fuse falls, the processor D4 is respectively connected with the clock chip D5 and the wireless communication module, the clock chip D5 wakes up the processor D4 at a set time interval, the processor D4 controls the angle detection unit to work in the wake-up state, and controlling the wireless communication module to send the collected position state information and current data of the drop-out fuse.

Further, the current acquisition unit comprises a current transformer and a current sampling circuit connected with the current transformer, and the current sampling circuit is connected with the processor D4.

Further, the current sampling circuit comprises a resistor R15 and a resistor R16, one ends of the resistor R15 and the resistor R16 are respectively connected with two ends of the current transformer, a resistor R18 is connected between the other ends of the resistor R15 and the resistor R16, the other end of the resistor R15 is connected with one end of a resistor R21, and the other ends of the resistor R21 and the resistor R16 are respectively connected with a processor D4.

Furthermore, a capacitor C27 is connected in parallel with the resistor R18, and a capacitor C29 is connected between the resistor R21 and the other end of the resistor R16.

Further, the switch detecting unit includes a position switch Q4, one end of the position switch Q4 is connected to the positive electrode of the power module 3 through a resistor R46, and the other end thereof is connected to the processor D4.

Further, the position switch Q4 includes a mercury switch or a ball switch.

Further, the angle detection unit includes an angle sensor D1 connected to the processor D4 and a power control circuit connected between the angle sensor D1 and the processor D4.

Further, the power control circuit comprises a triode VT1 of which the emitting electrode is connected with the processor D4, the base electrode of the triode VT1 is connected with the processor D4 through a resistor R11, and the collector electrode of the triode VT1 is connected with the angle sensor D1 through a resistor R13 and a resistor R5 in sequence.

Furthermore, a capacitor C18 is connected between the angle sensor D1 and the resistor R5, the other end of the capacitor C18 is grounded, a capacitor C24 is connected between the emitter of the triode VT1 and the ground, and a capacitor C23 is connected between the collector of the triode VT1 and the ground.

Further, the wireless communication module 2 includes any one of a 2.4G wireless module, a Lora module, and an FSK module.

Has the advantages that: the utility model discloses through fixing on drop out fuse, when the fuse appears fusing and falls, the state detection unit can detect the fall incident, when the fuse appears fusing but fails to fall normally, the data discovery that can gather through the current acquisition unit; the processor has two kinds of working methods of dormant state and awakening state, state detecting element adopts two kinds of detecting methods of switch detection and angle detection, switch detecting element is when detecting the fuse and fall, can awaken the processor, in order to send the fall incident, the clock chip still regularly awakens the processor and carries out the initiative detection to the fuse, thereby avoid switch detecting element to cause unusually to fail to detect the fuse and fall, also can detect the result with the angle detection through the contrast switch during the initiative detection, judge whether switch detecting element and angle detecting element are unusual, the accuracy of fuse monitoring has been improved by a wide margin, and can prolong the live time of battery.

Drawings

Fig. 1 is a schematic block diagram of a drop switch monitoring terminal with current collection according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a current sampling circuit according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an angle detection unit according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a switch detection unit according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a clock chip according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a processor according to an embodiment of the present invention.

Detailed Description

The present invention will be further clarified by the following embodiments with reference to the attached drawings, which are implemented on the premise of the technical solution of the present invention, and it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention.

As shown in fig. 1 to 6, the embodiment of the utility model provides a drop switch monitor terminal with current collection, including fixing the shell in the fuse outside, waterproof insulating casing is preferably adopted to the shell. The state detection unit 1, the processor D4, the clock chip D5, the wireless communication module 2, the power supply module 3, the current collection unit 4 and the like are arranged in the shell. The processor D4 preferably adopts a singlechip. The state detection unit 1 comprises a switch detection unit 11 and an angle detection unit 12, the switch detection unit 11 and the angle detection unit 12 are both used for detecting the position state of the drop-out fuse, and the position state of the drop-out fuse has two position states of normal closing and drop-out disconnection. The current collecting unit 4 is used for collecting current signals of the drop-out fuse, when the fuse wire of the drop-out fuse is fused and the drop-out fuse fails to fall normally, the current signals of the drop-out fuse are zero at the moment, so that the current signals of the fuse can be used as an auxiliary judgment basis, and monitoring leaks caused by the fact that the fuse wire is fused and the drop-out fuse fails to fall normally are avoided. The switch detection unit 11 and the angle detection unit 12 are connected to the processor D4, respectively, and further, the switch detection unit 11 and the angle detection unit 12 feed back the detected position state of the drop-out fuse to the processor D4 in the form of an electrical signal. In order to practice thrift power module 3's electric quantity, the utility model discloses processor D4 has sleep state and two kinds of mode of state of awaking, and under sleep state, switch detecting element 11 is when detecting drop out fuse and fall, awakens up processor D4 through to handling D4 input high potential signal. The processor D4 is connected to the clock chip D5 and the wireless communication module 2, the clock chip D5 wakes up the processor D4 at a set time interval, the processor D4 controls the angle detection unit 12 to operate in the wake-up state, and further controls the falling fuse to be detected at regular time, and in the wake-up state, the processor D4 controls the wireless communication module 2 to send out the position state information of the falling fuse collected by the switch detection unit 11 and the angle detection unit 12 and the current signal of the falling fuse collected by the current collection unit 4, so as to provide a judgment basis for remotely monitoring the position state of the falling fuse. The processor D4 sends the drop-out fuse position state information and then enters the sleep state again until the switch detection unit 11 or the clock chip D5 wakes up the same again.

The utility model discloses current acquisition unit 4 includes current transformer 5 and current sampling circuit 6, and current sampling circuit's signal input part is connected with current transformer 5, and current sampling circuit 6's signal output part is connected with treater D4. The current sampling circuit 6 feeds the current signal collected by the current transformer 5 back to the processor D4 in the form of voltage.

Specifically, the utility model provides a current sampling circuit 6 includes resistance R15 and resistance R16, and resistance R15 and resistance R16's one end are connected with current transformer 5's both ends respectively, are connected with resistance R18 between resistance R15 and the other end of resistance R16, and resistance R15's the other end is connected with resistance R21's one end, and resistance R21 and resistance R16's the other end is connected with treater D4 respectively. In order to improve the stability of the signal supplied to the processor D4, a capacitor C27 is connected in parallel to the resistor R18, and a capacitor C29 is connected between the resistor R21 and the other end of the resistor R16.

The utility model discloses switch detecting element includes position switch Q4, and position switch Q4 can adopt mercury switch or ball switch. One end of the position switch Q4 is connected to the positive electrode of the power module 3 through a resistor R46, and the other end thereof is connected to the processor D4. When the drop-out fuse is blown down, the position switch Q4 is closed from the open state, thereby providing a high level signal to the processor D4.

The utility model discloses angle detection unit 12 includes the angle sensor D1 and the power control circuit of connection between angle sensor D1 and treater D4 who is connected with treater D4. Specifically, the power control circuit comprises a triode VT1, an emitter of the triode VT1 is connected with the processor D4 to obtain working voltage, a base of the triode VT1 is connected with the processor D4 through a resistor R11, and a collector of the triode VT1 is connected with the angle sensor D1 through a resistor R13 and a resistor R5 in sequence. The processor D4 provides a low level signal to the base of the transistor VT1 in the sleep state, so that the emitter and the collector of the transistor VT1 are in the cut-off state, and the power supply of the angle sensor D1 is cut off, and the angle sensor D1 does not work. The processor D4 inputs high level to the base of the triode VT1 in the wake-up state, and triggers the triode VT1 to conduct, and the angle sensor D1 is powered on to work. Thereby avoiding wasting power by the angle sensor D1 when the processor D4 is in the sleep state.

In order to improve the stability of the power supply voltage of the angle sensor D1, a capacitor C18 is connected between the angle sensor D1 and the resistor R5, the other end of the capacitor C18 is grounded, a capacitor C24 is connected between the emitter of the transistor VT1 and the ground, and a capacitor C23 is connected between the collector of the transistor VT1 and the ground.

The embodiment of the utility model provides a wireless communication module 2 that preferably adopts is 2.4G wireless module or low-power consumption loRa FSK module, but is not limited to above three kinds of modules, can select according to customer's needs.

The utility model discloses power module 3 preferably adopts the battery, in order to adapt to multiple temperature environment, can adopt a high-low voltage battery, and the preferred adoption is 3.6V, capacity is the high low temperature battery of more than or equal to 1200mAh like voltage, need not to set up step-down circuit again, can directly supply power to the terminal.

The above description is only a preferred embodiment of the present invention, and it should be noted that other parts not specifically described belong to the prior art or the common general knowledge to those skilled in the art. Without departing from the principle of the present invention, several improvements and decorations can be made, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The drop switch monitoring terminal with the current collection function is characterized by comprising a shell fixed on the outer side of a fuse, wherein a state detection unit (1), a processor (D4), a clock chip (D5), a wireless communication module (2), a power module (3) and a current collection unit (4) are arranged in the shell, the state detection unit (1) comprises a switch detection unit (11) and an angle detection unit (12) which are respectively connected with the processor (D4), the switch detection unit (11) and the angle detection unit (12) are both used for detecting the position state of the drop fuse, the current collection unit (4) is used for collecting current signals of the drop fuse, the switch detection unit (11) wakes up the processor (D4) when the drop fuse is detected, and the processor (D4) is respectively connected with the clock chip (D5) and the wireless communication module (2), the clock chip (D5) wakes up the processor (D4) at set time intervals, the processor (D4) controls the angle detection unit (12) to work in the wake-up state, and controls the wireless communication module (2) to send out the collected position state information and current data of the drop-out fuse.

2. The drop switch monitoring terminal with current collection according to claim 1, wherein the current collection unit (4) comprises a current transformer (5) and a current sampling circuit (6) connected with the current transformer (5), and the current sampling circuit (6) is connected with the processor (D4).

3. The drop switch monitoring terminal with current collection according to claim 2, wherein the current sampling circuit (6) comprises a resistor R15 and a resistor R16, one end of the resistor R15 and one end of the resistor R16 are respectively connected with two ends of the current transformer (5), a resistor R18 is connected between the other ends of the resistors R15 and R16, the other end of the resistor R15 is connected with one end of a resistor R21, and the other ends of the resistor R21 and the resistor R16 are respectively connected with the processor (D4).

4. The drop switch monitoring terminal with current collection according to claim 3, wherein the resistor R18 is connected in parallel with a capacitor C27, and a capacitor C29 is connected between the resistor R21 and the other end of the resistor R16.

5. The droop switch monitoring terminal with current collection according to claim 1, wherein the switch detection unit comprises a position switch Q4, one end of the position switch Q4 is connected to the positive pole of the power module (3) through a resistor R46, and the other end is connected to the processor (D4).

6. The drop switch monitoring terminal with current collection according to claim 5, wherein the position switch Q4 comprises a mercury switch or a ball switch.

7. The drop switch monitoring terminal with current collection according to claim 1, wherein the angle detection unit (12) comprises an angle sensor D1 connected to the processor (D4) and a power control circuit connected between the angle sensor D1 and the processor (D4).

8. The droop switch monitoring terminal with current collection according to claim 7, wherein the power control circuit comprises a transistor VT1 with an emitter connected with the processor (D4), a base of the transistor VT1 is connected with the processor (D4) through a resistor R11, and a collector of the transistor VT1 is connected with the angle sensor D1 through a resistor R13 and a resistor R5 in sequence.

9. The droop switch monitoring terminal with current collection according to claim 8, wherein the angle sensor D1 is further connected with one end of a capacitor C18 between the resistor R5, the other end of the capacitor C18 is grounded, a capacitor C24 is connected between an emitter of the transistor VT1 and ground, and a capacitor C23 is further connected between a collector of the transistor VT1 and ground.

10. The droop switch monitoring terminal with current collection according to claim 1, wherein the wireless communication module (2) comprises any one of a 2.4G wireless module, a Lora module and an FSK module.