CN115426841A - Stray current monitoring facilities protection device - Google Patents
Stray current monitoring facilities protection device Download PDFInfo
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- CN115426841A CN115426841A CN202211054876.5A CN202211054876A CN115426841A CN 115426841 A CN115426841 A CN 115426841A CN 202211054876 A CN202211054876 A CN 202211054876A CN 115426841 A CN115426841 A CN 115426841A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 63
- 239000011521 glass Substances 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 31
- 239000013078 crystal Substances 0.000 claims description 13
- 238000012806 monitoring device Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000004973 liquid crystal related substance Substances 0.000 abstract 1
- 238000013021 overheating Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/0017—Casings, cabinets or drawers for electric apparatus with operator interface units
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
- H05K5/0234—Feet; Stands; Pedestals, e.g. wheels for moving casing on floor
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
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- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a stray current monitoring equipment protection device which comprises a support and a device shell, wherein a bottom plate of the device shell is connected with the support, a boss is arranged on the upper portion of the bottom plate of the device shell, meshes are arranged on the top surface of the boss, a notch is formed in the side surface of the boss, a protruding structure is arranged on the inner surface of a side plate of the device shell, a single chip microcomputer control circuit is arranged in the protruding structure, a cubic groove is formed in the top of the protruding structure and used for placing a temperature and humidity sensor, a key and a power switch are arranged on the front surface of the protruding structure, a cuboid groove is formed in the front surface of the protruding structure and used for placing an LCD (liquid crystal display) screen, a fan is arranged on the side surface of the protruding structure, a circular hole is formed in the side plate of the device shell, an openable baffle is arranged outside the circular hole, a glass door is arranged on the front surface of the device shell, and a shielding plate is arranged on the top of the device shell. The invention solves the problems of temperature overheating of stray current monitoring equipment, water inflow of the equipment and the like.
Description
Technical Field
The invention relates to a protection device, in particular to a protection device for stray current monitoring equipment.
Background
The rail transit in China has the characteristics of high running speed, high safety, large transportation capacity, low failure rate and the like, has obvious advantages compared with other transportation means, and is actively popularized and applied in various big cities at present. In 2020, 208 urban rail transit lines are opened in 40 cities in China, and the total length of the operation lines reaches 6736.2km, however, the urban rail transit lines mainly adopt a direct current power supply mode of running rail backflow, and steel rails cannot be completely insulated from the ground, so that serious stray current problems are caused along with large-scale and high-density running of an urban rail network, and therefore, the stray current needs to be monitored in real time.
In the monitoring process, need be to soil around the station, a plurality of outdoor places such as overhead earth wire downlead carry out stray current's synchronous monitoring, but because outdoor environment is complicated abominable, when meetting the weather of high temperature, stray current monitoring facilities's radiating effect is poor, monitoring personnel can not master stray current monitoring facilities's temperature in real time and dispel the heat to stray current monitoring facilities, often lead to stray current monitoring facilities to crash because of the high temperature, when meetting rainy day, often because can not waterproof to stray current monitoring facilities well, and lead to stray current monitoring facilities to take place faults such as short circuit, the aforesaid condition leads to stray current monitoring facilities can not monitor stray current well, and can seriously influence stray current monitoring facilities's life.
In view of this, the present application is specifically made.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in bad weather environment, the dead halt or short circuit easily occurs to stray current monitoring equipment, resulting in that stray current cannot be monitored smoothly and the service life of the equipment can be reduced. Aim at provides a stray current monitoring facilities protection device, through placing stray current monitoring facilities in protection device, and carry out real-time supervision to the humiture condition in the protection device through single chip microcomputer control temperature and humidity sensor, when the humiture reaches and predetermines the threshold value, through the inside dehumidification of cooling down of singlechip drive fan to protection device, realize playing good guard action to stray current monitoring facilities, prolong its life, realize also can carrying out stray current monitoring work smoothly in bad weather environment.
The invention is realized by the following technical scheme:
a protection device for stray current monitoring equipment comprises a device shell, temperature and humidity monitoring equipment and a boss for placing the stray current monitoring equipment; a circular hole for passing through a data transmission line of stray current monitoring equipment is formed in a back plate of the device shell; the boss is arranged on the bottom plate inside the device shell; the temperature and humidity monitoring equipment is arranged on a side plate inside the device shell; the temperature and humidity monitoring equipment comprises: the device comprises an equipment shell, a control circuit, a temperature and humidity sensor, a fan, an LCD display screen, a power switch button and a plurality of control buttons; the control circuit is arranged inside the equipment shell, and the temperature and humidity sensor, the fan, the LCD display screen, the power switch button and the plurality of control buttons are arranged outside the equipment shell; the temperature and humidity sensor, the fan, the LCD display screen, the power switch button and the control buttons are all connected with the control circuit.
Further, in the above-mentioned case,
the outer side of the back plate of the device shell is provided with an openable baffle; the front side of the equipment shell is provided with a glass door; and a support is arranged on the outer side of the bottom plate of the equipment shell.
Further, in the above-mentioned case,
the top of the boss is provided with a mesh for radiating the stray current monitoring equipment; and a waterproof notch is formed in the side face of the boss.
Further, in the above-mentioned case,
the top of the equipment shell comprises a first groove for placing the temperature and humidity sensor, and the front surface of the equipment shell is provided with a second groove for placing the LCD display screen; the second recess, the power switch button, and the plurality of control buttons are located on a same side of the device housing; the fan is disposed on the same side of the device housing proximate to the stray current monitoring device.
Further, in the above-mentioned case,
the control circuit comprises a single chip microcomputer U1, a crystal oscillator circuit unit, a power switch circuit unit, a fan driving circuit unit, a sensor control circuit unit, an LCD display screen control circuit unit and a control switch circuit unit; the crystal oscillator circuit unit, the power switch circuit unit, the fan driving circuit unit, the sensor control circuit unit, the LCD display screen control circuit unit and the control switch circuit unit are respectively connected to the single chip microcomputer U1.
Further, in the above-mentioned case,
the crystal oscillator circuit unit includes: a capacitor C1, a capacitor C2 and a crystal oscillator X1; one end of the capacitor C2 is grounded, and the other end of the capacitor C2 is connected with the singlechip U1; one end of the capacitor C3 is grounded, and the other end of the capacitor C3 is connected with the singlechip U1; and two ends of the crystal oscillator X1 are connected with the singlechip U1.
Further, in the above-mentioned case,
the power switching circuit unit includes: the circuit comprises a resistor R1, a key K5 and a capacitor C1; the key K5 corresponds to the power switch button; the key K5 is grounded with one end of the resistor R1 of the power switch, and the other end of the key K5 is connected with one end of the key K5; the other end of the key K5 is connected with one end of the resistor R2, and the other end of the resistor R2 is connected with a high level; the capacitor C1 is a polar capacitor, the positive electrode of the capacitor C1 is connected with the high level, and the negative electrode of the capacitor C1 is connected with the single chip microcomputer U1.
Further, in the above-mentioned case,
the fan driving circuit unit includes: a drive module U2; the driving module U2 is respectively connected with the motor of the fan and the singlechip U1.
Further, in the above-mentioned case,
the sensor control circuit unit comprises a sensor control module U3 and a resistor R3; one end of the resistor R3 is connected with the singlechip U1, and the other end of the resistor R is connected with a high level; the sensor control module U3 is respectively connected with the single chip microcomputer U1 and the high level, and the sensor control module U3 is grounded.
Further, in the above-mentioned case,
the LCD display screen control circuit unit comprises a pull-up resistor RP1, and the pull-up resistor RP1 is respectively connected with the LCD electronic screen, the singlechip U1 and a high level; the control switch circuit unit comprises a key K1, a key K2, a key K3 and a key K4; the keys K1, K2, K3 and K4 correspond to the control buttons one by one; one end of the key K1, one end of the key K2, one end of the key K3 and one end of the key K4 are grounded, and the other end of the key K1, the other end of the key K2, the other end of the key K3 and the other end of the key K4 are connected with the single chip microcomputer U1.
Compared with the prior art, the invention has the following advantages and beneficial effects: the single chip microcomputer control circuit is adopted, and when the temperature and the humidity reach set threshold values, the fan is started to radiate and ventilate the inside of the protection device, so that the power supply is saved, and the influence on the operation of the stray current monitoring equipment due to overhigh temperature and humidity is avoided; in addition, through setting up the boss on the bottom plate upper portion of device shell, and mesh and breach have been set up on the boss, can be used for placing stray current monitoring facilities, it carries out ventilation cooling also to have guaranteed stray current monitoring facilities, through setting up round hole and baffle in the side of device shell, can make stray current monitoring facilities during operation pass through the round hole with the data transmission line, the inside rainwater entering device shell has also been avoided to the baffle, thereby make stray current monitoring facilities obtain better protection, the life of extension stray current monitoring facilities, the realization also can carry out stray current monitoring work smoothly in adverse weather environment.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that those skilled in the art may also derive other related drawings based on these drawings without inventive effort.
Fig. 1 is a schematic view of an internal overall structure of a protection device for stray current monitoring equipment according to an embodiment of the present invention;
FIG. 2 is a side perspective view of a stray current monitoring device protection apparatus provided in an embodiment of the present invention;
fig. 3 is a control circuit diagram according to an embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
1-shielding plate, 2-round hole, 3-mesh, 4-bracket, 5-glass door, 6-boss, 7-notch, 8-control button, 9-power switch button, 10-second groove, 11-first groove, 12-baffle, 13-fan, 14-bottom plate, 15-side plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
Aiming at the defects that the conventional stray current monitoring equipment is easy to crash or short circuit in a bad weather environment, so that the stray current cannot be monitored smoothly and the service life of the equipment is reduced, the embodiment provides the stray current monitoring equipment protection device shown in fig. 1 and 2, which comprises a device shell 1, temperature and humidity monitoring equipment and a boss 6 for placing the stray current monitoring equipment; a round hole 2 for passing through a data transmission line of stray current monitoring equipment is arranged on a back plate of the device shell 1; the boss 6 is arranged on a bottom plate 14 inside the device shell 1; the temperature and humidity monitoring equipment is arranged on a side plate 15 in the device shell 1; the temperature and humidity monitoring equipment comprises: the device comprises a device shell, a control circuit, a temperature and humidity sensor, a fan 13, an LCD display screen, a power switch button 9 and a plurality of control buttons 8; the control circuit is arranged inside the equipment shell, and the temperature and humidity sensor, the fan 13, the LCD display screen, the power switch button 9 and the control buttons 8 are arranged outside the equipment shell; the temperature and humidity sensor, the fan 13, the LCD display screen, the power switch button 9 and the control buttons 8 are all connected with the control circuit.
Wherein the content of the first and second substances,
an openable baffle plate 12 is arranged on the outer side of the back plate of the device shell 1; the front surface of the equipment shell 1 is provided with a glass door 5; the outer side of the bottom plate 14 of the device housing 1 is provided with a bracket 4.
The top of the boss 6 is provided with a mesh 3 for radiating the stray current monitoring equipment; and a waterproof notch 7 is formed in the side surface of the boss 6.
The top of the equipment shell comprises a first groove 11 for placing the temperature and humidity sensor, and the front surface of the equipment shell is provided with a second groove 10 for placing the LCD display screen; the second recess 10, the power switch button 9 and the plurality of control buttons 8 are located on the same side of the device housing; the fan 13 is arranged on a side of the device housing close to the stray current monitoring device.
As shown in fig. 3, the system circuit is composed of a single chip microcomputer processing circuit, a DHT11 temperature and humidity sensor, a motor, and an LCD display screen, wherein the single chip microcomputer processing circuit is composed of an AT89C51 single chip microcomputer, a crystal oscillator X1, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a key K1, a key K2, a key K3, a key K4, a key K5, a pull-up resistor RP1, and a driving module U2.
The capacitors except the first capacitor are all non-polar capacitors; one end of a first resistor R1 is grounded, the other end of the first resistor R1 is connected with one end of a key K5, one end of a second resistor R2 is connected with the key K5, the other end of the second resistor R3 is connected with a high level, one end of a third resistor R3 is connected with 8 pins of an AT89C51 singlechip, the other end of the third resistor R3 is connected with the high level, the anode of a first capacitor C1 is connected with the high level, the cathode of the first resistor R2 is connected with 9 pins of the AT89C51 singlechip, one end of a second capacitor C2 is grounded, one end of the second resistor R3 is connected with 19 pins of the AT89C51 singlechip, one end of the third capacitor C3 is grounded, one end of a crystal oscillator X1 is connected with 18 pins of the AT89C51 singlechip, the other end of the crystal oscillator X1 is connected with 19 pins of the AT89C51 singlechip, one end of the key K1 is connected with 24 pins of the AT89C51 singlechip, one end of the key K2 is grounded, one end of the key K2 is connected with 25 pins of the AT89C51, one end of the ground, one end of the key K3 is connected with 26 pins of the AT89C51, one singlechip is grounded, one end of the singlechip is grounded, and one end of the singlechip is grounded; a pin 1 of the driving module U2 is connected with a pin 1 of the AT89C51 singlechip, a pin 2 is connected with a pin 2 of the AT89C51 singlechip, a pin 3 is connected with a pin 3 of the AT89C51 singlechip, and a pin 9 is connected with a high level; a pin 1 of the pull-up resistor RP1 is connected with a high level, a pin 2 is connected with a pin 39 of the AT89C51 singlechip, a pin 3 is connected with a pin 38 of the AT89C51 singlechip, a pin 4 is connected with a pin 37 of the AT89C51 singlechip, a pin 5 is connected with a pin 36 of the AT89C51 singlechip, a pin 6 is connected with a pin 35 of the AT89C51 singlechip, a pin 7 is connected with a pin 34 of the AT89C51 singlechip, a pin 8 is connected with a pin 33 of the AT89C51 singlechip, and a pin 9 is connected with a pin 32 of the AT89C51 singlechip; a pin 1 of the motor is connected with a pin 16 of the U2, a pin 2 of the motor is connected with a high level, a pin 3 of the motor is connected with a pin 13 of the U2, a pin 4 of the motor is connected with a pin 14 of the U2, a pin 5 of the motor is connected with a pin 9 of the U2, and a pin 6 of the motor is connected with a pin 15 of the U2; a pin 1 of the LCD is connected with a low level, a pin 2 is connected with a high level, a pin 4 is connected with a pin 23 of the AT89C51 singlechip, a pin 5 is connected with a pin 22 of the AT89C51 singlechip, a pin 6 is connected with a pin 21 of the AT89C51 singlechip, a pin 7 is connected with a pin 2 of the RP1, a pin 8 is connected with a pin 3 of the RP1, a pin 9 is connected with a pin 4 of the RP1, a pin 10 is connected with a pin 5 of the RP1, a pin 11 is connected with a pin 6 of the RP1, a pin 12 is connected with a pin 7 of the RP1, a pin 13 is connected with a pin 8 of the RP1, and a pin 14 is connected with a pin 9 of the RP 1; temperature and humidity sensor U3's 1 pin ground connection, 3 pins connect the high level, and 2 pins connect the 8 pins of AT89C51 singlechip.
The following describes the operation of the protection device for the stray current monitoring device:
when stray current monitoring facilities put on the boss 6 of device shell, turn on switch 9, system circuit works, stray current monitoring facilities's data transmission line passes through round hole 2, 2 outside baffles 13 of round hole are opened, set up the threshold value of temperature and humidity through button 8, the temperature that DHT11 temperature and humidity sensor placed in cube recess 11 will gather, humidity information transmits AT89C51 singlechip, carry out the analysis processes back to data through singlechip processing circuit, show the inside temperature and humidity of protection device on the LCD display screen in real time. When the temperature or humidity in the device shell is larger than the corresponding threshold value, the single chip microcomputer processing circuit controls the driving module, then the motor is controlled to drive the fan 13 to rotate, the temperature and the humidity of the stray current monitoring equipment are reduced, and when the temperature and the humidity in the device shell are smaller than the corresponding threshold values, the fan 13 is closed.
The setting method for the temperature and humidity threshold values comprises the following steps:
pressing K1 can set a temperature threshold and a humidity threshold, where key K2 is used to select whether to set the temperature threshold or the humidity threshold, key K3 is used to increase the set threshold, and key K4 is used to decrease the set threshold.
In summary, according to the protection device for the stray current monitoring equipment provided by the embodiment, the single chip microcomputer control circuit is adopted, and when the temperature and the humidity reach the set threshold values, the fan is started to radiate and ventilate the inside of the protection device, so that the power supply is saved, and the condition that the operation of the stray current monitoring equipment is not influenced due to overhigh temperature and humidity is ensured; in addition, through setting up the boss on the bottom plate upper portion of device shell, and mesh and breach have been set up on the boss, can be used for placing stray current monitoring facilities, it carries out ventilation cooling also to have guaranteed stray current monitoring facilities, through setting up round hole and baffle in the side of device shell, can make stray current monitoring facilities during operation pass through the round hole with the data transmission line, the inside rainwater entering device shell has also been avoided to the baffle, thereby make stray current monitoring facilities obtain better protection, the life of extension stray current monitoring facilities, the realization also can carry out stray current monitoring work smoothly in adverse weather environment.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A stray current monitoring equipment protection device is characterized by comprising a device shell (1), temperature and humidity monitoring equipment and a boss (6) for placing the stray current monitoring equipment; a round hole (2) for passing through a data transmission line of stray current monitoring equipment is formed in a back plate of the device shell (1); the boss (6) is arranged on a bottom plate (14) inside the device shell (1); the temperature and humidity monitoring equipment is arranged on a side plate (15) in the device shell (1); the temperature and humidity monitoring equipment comprises: the device comprises a device shell, a control circuit, a temperature and humidity sensor, a fan, an LCD display screen, a power switch button (9) and a plurality of control buttons (8); the control circuit is arranged inside the equipment shell, and the temperature and humidity sensor, the fan, the LCD display screen, the power switch button (9) and the control buttons (8) are arranged outside the equipment shell; the temperature and humidity sensor, the fan (13), the LCD display screen, the power switch button (9) and the control buttons (8) are all connected with the control circuit.
2. Stray current monitoring device protection device according to claim 1, characterized in that the device housing (1) is provided with an openable and closable baffle (12) outside the back plate; the front surface of the equipment shell (1) is provided with a glass door (5); a support (4) is arranged on the outer side of a bottom plate (14) of the equipment shell (1).
3. A stray current monitoring device protection device according to claim 1, wherein the top of the boss (6) is provided with a mesh (3) for dissipating heat from the stray current monitoring device; and a waterproof notch (7) is arranged on the side surface of the boss (6).
4. A stray current monitoring device protection device according to claim 1, wherein the top of the device housing comprises a first recess (11) for placing the temperature and humidity sensor, and the front of the device housing is provided with a second recess (10) for placing the LCD display screen; the second recess (10), the power switch button (9) and the plurality of control buttons (8) are located on the same side of the device housing; the fan (13) is arranged on the same side of the device housing as the stray current monitoring device.
5. The stray current monitoring equipment protection device according to claim 1, wherein the control circuit comprises a single chip microcomputer U1, a crystal oscillator circuit unit, a power switch circuit unit, a fan driving circuit unit, a sensor control circuit unit, an LCD display screen control circuit unit and a control switch circuit unit; the crystal oscillator circuit unit, the power switch circuit unit, the fan driving circuit unit, the sensor control circuit unit, the LCD display screen control circuit unit and the control switch circuit unit are respectively connected to the single chip microcomputer U1.
6. The stray current monitoring device protection apparatus according to claim 5, wherein the crystal oscillator circuit unit comprises: a capacitor C1, a capacitor C2 and a crystal oscillator X1; one end of the capacitor C2 is grounded, and the other end of the capacitor C2 is connected with the singlechip U1; one end of the capacitor C3 is grounded, and the other end of the capacitor C3 is connected with the singlechip U1; and two ends of the crystal oscillator X1 are connected with the singlechip U1.
7. The protection device of claim 5, wherein said power switching circuit unit comprises: the circuit comprises a resistor R1, a key K5 and a capacitor C1; the key K5 corresponds to the power switch button (9); one end of the resistor R1 is grounded, and the other end of the resistor R1 is connected with one end of the key K5; the other end of the key K5 is connected with one end of the resistor R2, and the other end of the resistor R2 is connected with a high level; the capacitor C1 is a polar capacitor, the positive electrode of the capacitor C1 is connected with the high level, and the negative electrode of the capacitor C1 is connected with the singlechip U1.
8. A stray current monitoring device protection apparatus according to claim 5, wherein the fan drive circuit unit comprises: a drive module U2; the driving module U2 is respectively connected with the motor of the fan and the singlechip U1.
9. The protection device for stray current monitoring equipment according to claim 5, wherein said sensor control circuit unit comprises a sensor control module U3 and a resistor R3; one end of the resistor R3 is connected with the singlechip U1, and the other end of the resistor R is connected with a high level; the sensor control module U3 is respectively connected with the single chip microcomputer U1 and a high level, and the sensor control module U3 is grounded.
10. A stray current monitoring device protection apparatus according to claim 5,
the LCD display screen control circuit unit comprises a pull-up resistor RP1, and the pull-up resistor RP1 is respectively connected with the LCD electronic screen, the singlechip U1 and a high level;
the control switch circuit unit comprises a key K1, a key K2, a key K3 and a key K4; the keys K1, K2, K3 and K4 correspond to the control buttons (8) one by one; one end of the key K1, one end of the key K2, one end of the key K3 and one end of the key K4 are grounded, and the other end of the key K1, the other end of the key K2, the other end of the key K3 and the other end of the key K4 are connected with the single chip microcomputer U1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211054876.5A CN115426841A (en) | 2022-08-31 | 2022-08-31 | Stray current monitoring facilities protection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211054876.5A CN115426841A (en) | 2022-08-31 | 2022-08-31 | Stray current monitoring facilities protection device |
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