CN213240911U - Cable trench water level remote monitoring control system - Google Patents
Cable trench water level remote monitoring control system Download PDFInfo
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- CN213240911U CN213240911U CN202022777258.6U CN202022777258U CN213240911U CN 213240911 U CN213240911 U CN 213240911U CN 202022777258 U CN202022777258 U CN 202022777258U CN 213240911 U CN213240911 U CN 213240911U
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Abstract
The utility model discloses a cable pit water level remote monitoring control system, including the control unit, current sampling unit, voltage sampling unit, keyboard, liquid level sampling unit, water pump control standby unit, local display element, local alarm unit, communication unit, current sampling unit, voltage sampling unit, keyboard, liquid level sampling unit are connected with the control unit input, and the control unit output is connected with water pump control unit, water pump control standby unit, local display element, local alarm unit, communication unit, and water pump control unit control water pump, water pump control standby unit control standby water pump, and cable pit water level remote monitoring control system carries out data interchange through communication unit and network server or workstation. The utility model discloses set up the level sensor of wireless water level controller at the cable pit of transformer substation, wireless transmission water level signal, long-range supervision cable pit ponding of transformer substation and in time get rid of ponding in the station with the water pump linkage in the station.
Description
Technical Field
The utility model relates to a cable pit water level remote monitoring control system belongs to supervisory equipment technical field.
Background
The existing transformer substation cable trench waterless monitoring device cannot remotely monitor the cable trench ponding condition, needs to periodically assign operation and maintenance personnel to lift a cable trench cover plate on site for checking, is time-consuming and labor-consuming, and cannot monitor in real time. The existing drainage pump of the transformer substation starts a water pump by a floating ball or a liquid level sensor, when the sensitivity of the floating ball or the liquid level sensor is insufficient, the drainage pump cannot be started to cause accumulated water in the transformer substation, and if the rainfall is large, the transformer substation is flooded by water due to untimely drainage. The existing water pump cannot be monitored and controlled remotely, operation and maintenance personnel cannot judge the running state of the water pump, the operation and maintenance personnel need to visit the site to check the state and operate, the working efficiency is low, and manpower and financial resources are wasted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the unable remote monitoring cable pit ponding condition of present transformer substation's cable pit no water level monitoring devices and need the artifical condition of lifting the cable pit apron and looking over, provide a cable pit water level remote monitoring control system, realize transformer substation's cable pit remote monitoring water level and monitor control drain pump function.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a cable pit water level remote monitoring control system, includes the control unit, current sampling unit, voltage sampling unit, keyboard, liquid level sampling unit, water pump control standby unit, local display element, local alarm unit, communication unit, current sampling unit, voltage sampling unit, keyboard, liquid level sampling unit are connected with the control unit input, and the control unit output is connected with water pump control unit, water pump control standby unit, local display element, local alarm unit, communication unit, and water pump control unit control water pump, water pump control standby unit control standby water pump, and cable pit water level remote monitoring control system carries out data interchange through communication unit and network server or workstation.
The purpose of the utility model can be further realized through the following technical measures:
in the cable trench water level remote monitoring control system, the current sampling unit adopts a straight-through current transformer to collect the current of the water pump circuit.
In the cable trench water level remote monitoring control system, the voltage sampling unit adopts a resistance voltage division sampling circuit.
In the cable trench water level remote monitoring and controlling system, the liquid level sampling unit adopts a wireless water level controller with the model number of AB 433W.
Compared with the prior art, the beneficial effects of the utility model are that:
1. a water level sensor of a wireless water level controller is arranged in a cable trench of the transformer substation, a water level signal is wirelessly transmitted, and the water accumulation condition of the cable trench of the transformer substation is remotely monitored; the wireless water level controller is linked with the water pump in the station to drain accumulated water in the station in time.
2. The current sampling unit and the voltage sampling unit collect water pump circuit state signals, the control unit monitors the working state of the water pump, and the local display unit and the local alarm unit display and alarm; the signals are uploaded through the communication unit so as to be monitored and controlled remotely.
Drawings
FIG. 1 is a circuit diagram of the present invention;
fig. 2 is a circuit diagram of an embodiment of the present invention;
fig. 3 is a diagram of an embodiment voltage Ua protection circuit.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
Cable pit water level remote monitoring control system, as shown in figure 1, including the control unit, current sampling unit, voltage sampling unit, keyboard, liquid level sampling unit, water pump control standby unit, local display element, local alarm unit, communication unit, current sampling unit, voltage sampling unit, keyboard, liquid level sampling unit are connected with the control unit input, and the control unit output is connected with water pump control unit, water pump control standby unit, local display element, local alarm unit, communication unit, and water pump control unit control water pump, water pump control standby unit control standby water pump, and cable pit water level remote monitoring control system carries out data interchange through communication unit and network server or workstation. The MCU chip of the control unit adopts NXP company
V1 (with hardware multiply accumulate MAC unit) is structured with 32-bit processor MCF51EM256 of kernel, the clock frequency can reach 50MHz at most, 256K Flash, 16K SRAM, 3-way timer, 3-way SCI communication interface, built-in RTC clock, I2C, SPI, KBI interface and other resources are built in, on-chip programmable delay module PDB and 4 16-bit SAR type ADC are integrated, PDB can directly control and trigger ADC sampling, high-precision voltage, current alternating current sampling and liquid level measurement are completed, the measurement precision can reach 0.5 level, 50 general input/output (DIO) are reached, the low-power consumption operation mode is adopted, and the high cost performance is achieved. Communication ticketThe element is an RS485 communication unit. The liquid level sampling unit adopts a wireless water level controller with the model number of AB433W, a sensor of the water level controller is arranged in a ditch, collected water level signals are sent to a wireless water level controller body in a wireless mode, and the wireless water level controller transmits the signals to the control unit. The control unit controls water pump work according to water level state, and control signal sends to the operation of water pump control unit control water pump, and is reliable for the guarantee, the utility model discloses water pump control stand-by element has been configured. The keyboard is used for inputting control parameters to the control unit, the current sampling unit and the voltage sampling unit are used for collecting current and voltage values of the main working circuit of the water pump and inputting the current and voltage values into the control unit, and the control unit is used for monitoring the working state of the water pump and displaying and alarming through the local display unit and the local alarm unit. The local display unit can adopt a display screen, and the local alarm unit can adopt an audible and visual alarm. The cable trench water level remote monitoring control system exchanges data with a network server or a workstation through a communication unit so as to realize remote monitoring and control, and the communication unit can adopt an RS485 communication unit.
As shown in fig. 2, the circuit diagram of the embodiment of the present invention, the current sampling unit adopts a feedthrough current transformer to collect the current of the circuit of the water pump. The voltage sampling unit adopts a resistance voltage division sampling circuit to collect the voltage of the water pump circuit. In order to protect the AD sampling channel of the MCU chip, the three-phase voltages Ua, Ub and Uc are reduced by resistors, a raising voltage VREF is added to a sampling signal, so that the amplitude of an alternating current signal is greater than zero, the AD sampling is convenient, a voltage limiting diode is added at the AD input end of the MCU chip to limit the input voltage to be less than (clamp voltage) 3.3V, and the AD sampling channel of the MCU chip can be well protected. As shown in fig. 3, is a protection circuit diagram of the voltage Ua.
On the basis of the collected water pump circuit signals, a control unit is provided, and the water pump control has the following functions: overvoltage/undervoltage protection, phase sequence protection, overload/no-load protection, open-phase protection, short-circuit protection, on-site alarm, alarm remote transmission, state remote transmission and the like.
In addition to the above embodiments, the present invention can also have other embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (4)
1. The utility model provides a cable pit water level remote monitoring control system, a serial communication port, including the control unit, current sampling unit, voltage sampling unit, keyboard, liquid level sampling unit, water pump control standby unit, local display element, local alarm unit, communication unit, current sampling unit, voltage sampling unit, keyboard, liquid level sampling unit are connected with the control unit input, and the control unit output is connected with water pump control unit, water pump control standby unit, local display element, local alarm unit, communication unit, and water pump control unit control water pump, water pump control standby unit control standby water pump, and cable pit water level remote monitoring control system carries out data interchange through communication unit and network server or workstation.
2. The cable pit water level remote monitoring and control system of claim 1, wherein the current sampling unit adopts a feedthrough current transformer to collect the current of the water pump circuit.
3. The cable pit water level remote monitoring and control system of claim 1, wherein the voltage sampling unit employs a resistance voltage division sampling circuit.
4. The cable pit water level remote monitoring and control system of claim 1, wherein the level sampling unit is a wireless level controller model AB 433W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022777258.6U CN213240911U (en) | 2020-11-26 | 2020-11-26 | Cable trench water level remote monitoring control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022777258.6U CN213240911U (en) | 2020-11-26 | 2020-11-26 | Cable trench water level remote monitoring control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213240911U true CN213240911U (en) | 2021-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022777258.6U Active CN213240911U (en) | 2020-11-26 | 2020-11-26 | Cable trench water level remote monitoring control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213240911U (en) |
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2020
- 2020-11-26 CN CN202022777258.6U patent/CN213240911U/en active Active
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