CN113358925A - Meter box monitor - Google Patents
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- CN113358925A CN113358925A CN202110590957.6A CN202110590957A CN113358925A CN 113358925 A CN113358925 A CN 113358925A CN 202110590957 A CN202110590957 A CN 202110590957A CN 113358925 A CN113358925 A CN 113358925A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 58
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- 101100048260 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) UBX2 gene Proteins 0.000 claims description 3
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- 238000003745 diagnosis Methods 0.000 claims description 3
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- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
- G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/063—Details of electronic electricity meters related to remote communication
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/20—Individual registration on entry or exit involving the use of a pass
- G07C9/22—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder
- G07C9/25—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder using biometric data, e.g. fingerprints, iris scans or voice recognition
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/075—Investigating concentration of particle suspensions by optical means
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Abstract
The invention relates to a meter box monitor which comprises an environment monitoring module, an ammeter monitoring module and a controller module, wherein the environment monitoring module and the ammeter monitoring module are connected with the controller module, the controller module is also connected with a wireless communication module, an entrance guard module, an alarm module and a storage module, the environment monitoring module monitors environments such as smoke, temperature, humidity and motion and sends corresponding environment data to the controller module, the ammeter monitoring module monitors and sends ammeter information, and meanwhile, the entrance guard module can detect door opening personnel and a box door state, so that the safety is high. The invention monitors the working condition and working environment of the ammeter in real time, identifies the door opening personnel and the state of the box door, and realizes sound-light alarm and remote alarm when finding abnormal conditions.
Description
Technical Field
The invention relates to the technical field of electric meter boxes, in particular to a meter box monitor.
Background
Along with the construction of the electricity consumption information acquisition system, various electricity consumption information acquisition terminals are increasingly popularized, an electric energy meter box is important equipment for power distribution and installation of an electric energy meter, and the safety and reliability monitoring of the electric energy meter box has important significance.
Among the prior art ammeter case have many problems, for example, receive environmental impact such as temperature and humidity easily and damage, the chamber door of table case is opened easily, has the potential safety hazard of electrocuteeing or stealing electricity, and the testing process often leads to very wasting time and energy because signal port is too much, the wiring is complicated and artifical investigation, detection error and potential safety hazard that can bring simultaneously.
Meanwhile, most of current meter box monitors do not have the functions of remote monitoring and alarming, when electricity is used abnormally, workers often cannot arrive at the site quickly to process due to the fact that the workers cannot timely receive abnormal conditions, the fire phenomenon easily occurs, harm is caused to people, and safety is low.
Disclosure of Invention
The invention provides a meter box detector, which can monitor the working condition and working environment of an electric meter in real time and realize sound-light alarm and remote alarm when abnormity is found.
In order to solve the problems, the invention adopts the following technical scheme: a meter box monitor comprises an environment monitoring module for monitoring environment parameters in a multi-dimensional meter box, an electric energy metering module for monitoring the electric state in the meter box, a controller module, an environment control module for improving environment field control, and an external communication module for remote transmission and alarm, wherein the controller module is respectively connected with the environment monitoring module, the electric energy metering module, the environment control module and the external communication module; the environment monitoring module realizes data acquisition such as temperature, smog, humidity, vibration to the incasement key point of table, and electric energy metering module passes through pulse acquisition circuit, digital ammeter 235 interface and carrier unit and realizes monitoring electric wire netting state and short distance data transmission control, and the controller module carries out preliminary diagnosis aassessment to the equipment state according to the variable that monitors, other modules of coordinated control and with its data send to the rear end main website through external communication module.
Preferably, the controller module is further connected with a monitoring meter box door and an identity recognition access control management module, a storage module and a power module, the power module is respectively electrically connected with the environment monitoring module, the electric energy metering module, the controller module, the environment management and control module, the external communication module and the access control module, and the power module can provide 3.3V, 5V and 12V direct-current voltage.
Preferably, the environment monitoring module is installed in a meter box, the environment monitoring module is respectively connected with a plurality of sensors of the monitoring meter box through field data bus interfaces, the sensors comprise a temperature sensor, a smoke sensor, a humidity sensor, a vibration sensor and a water level sensor, the sensors are respectively arranged at corresponding monitoring points, and various environments and running states of the equipment are recorded on line. The multiple sensors are connected with the environment monitoring module through the field data bus interface, so that information acquisition of the operation environment of the meter box equipment is realized, and the multiple sensors are respectively arranged at corresponding key monitoring points.
Preferably, the temperature sensor comprises a thermistor RT1, an amplifier IC2, a reference voltage source IC3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, and an analog-to-digital conversion unit, wherein a pin 1 of the thermistor RT1 is connected to a pin + IN of the amplifier IC2, a pin 2 of the thermistor RT1 is connected IN series with the resistor R2 and then connected to a pin VOUT of the reference voltage source IC3, a pin 3 of the thermistor RT1 is connected to a ground signal GND, a pin-RG of the amplifier IC2 is connected IN series with the resistor R1 and then connected to a pin + RG of the amplifier IC2, a pin-IN of the amplifier IC2 is connected IN series with a pin R4 and then connected to a ground pin, -VS pin and a pin ground signal GND, + pin are connected to a positive electrode of a power module, a pin OUTPUT pin of the amplifier IC2 is connected to the analog-to-digital conversion unit, and the pin GND is connected to the controller module, a pin of the reference voltage source IC3 and the ground signal GND is connected to a pin, The VIN pin is connected with the anode of the power supply module, and the VOUT signal of the reference voltage source IC3 is connected with the-IN pin of the amplifier IC2 after being connected with the resistor R3 IN series. Assuming that the environment is 0 ℃, the resistance value of the thermistor RT1 is 100 ohms, and the voltage difference of the bridge in the circuit is 0V, if 0V is detected, the environment temperature is 0 ℃. If the environmental temperature is less than 0 ℃, the resistance value of the thermistor RT1 is less than 100 ohms, the in-phase voltage is smaller than the reverse-phase voltage at the moment, the measured voltage is still 0V, therefore, the circuit cannot measure the temperature below 0 ℃, the maximum output voltage of the amplifier is 3.3V, the amplification factor is 51 times, therefore, the maximum value of the voltage difference of the bridge is 64.7mV, the voltage of the reverse-phase arm of the bridge obtained at the moment is 142.86mV, the voltage of the in-phase arm is the voltage difference of the bridge plus the voltage of the reverse-phase arm of the bridge to obtain 207.56mV, the corresponding resistance value of the thermistor RT1 is 148.66 ohms, and the maximum temperature measuring point is confirmed by looking up a table.
Preferably, the smoke sensor 101 comprises an infrared light emitting diode VD1, a diode VD2, a phototransistor VT1, a triode VT2, a triode VT3, a triode VT4, a sliding rheostat RP1, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a capacitor C1, an indicator light a, a speaker B, and a chip IC1, wherein an anode of the infrared light emitting diode VD1 is connected to a positive terminal of a power module, a cathode of the infrared light emitting diode VD1 is connected to a collector of the phototransistor VT1, an emitter of the phototransistor VT1 is connected to a ground signal GND through the resistor R11, a collector of the phototransistor VT 11 is connected to the ground signal GND through the sliding rheostat RP 11, a collector of the phototransistor VT 11 is connected to a base of the triode VT 11, a base of the triode VT 11 is connected to the ground signal GND, an emitter of the triode VT 11 is connected to the ground signal GND, the collector of triode VT2 passes through resistance R13 and connects triode VT 3's base, the base of triode VT3 passes through resistance R12 and connects power module, triode VT 3's projecting pole is connected ground signal GND, triode VT 3's collector connects chip IC 1's SEL1 pin, chip IC 1's VDD pin passes through resistance R14 and connects power module positive pole, triode VT 4's base is connected to chip IC 1's 3 pin, and resistance R15 both ends are connected respectively chip IC 1's 6 pins and 7 pins, triode VT 4's emitter is connected ground signal GND, triode VT 4's collector is connected the power module positive pole behind pilot lamp A and the speaker B in series, triode VT 4's collector connection controller module. When the monitored environment is clean and smokeless, the infrared light emitting diode VD1 emits light with a preset initial current. The internal resistance of the infrared light is reduced after the infrared light is received by the phototriode VT1, so that the current in the series circuit of VD1 and VT1 is increased, the luminous intensity of the infrared light-emitting diode VD1 is correspondingly increased, the internal resistance of the phototriode is further reduced, a strong positive feedback process is formed by the circulation until the current in the series photosensitive circuit reaches the maximum value, the voltage drop generated on R11 leads VT2 to be conducted through VD2, VT3 is cut off, and the indicator lamp A does not work. When smoke in the monitored environment suddenly increases, the light transmittance in the air is deteriorated, at the moment, the luminous flux received by the phototriode VT1 is reduced, the internal resistance is increased, the current in the series photosensitive circuit is reduced, and the luminous intensity of the light-emitting diode VD11 is reduced. The circulation forms a negative feedback process, the current in the series photosensitive circuit is reduced to the initial current value, the voltage on the resistor R11 is also reduced to 1.2V, the VT2 is cut off, the VT3 is conducted, the indicator lamp A is lightened, and the loudspeaker B gives an alarm.
Preferably, the electric energy metering module is connected with the pulse acquisition processing unit, the carrier unit and the RS485 unit directly connected with the electronic instrument, the pulse acquisition processing unit acquires and processes voltage and current state signals of a power grid, the carrier unit identifies the carrier signals of the power grid and is connected with the controller module to realize short-distance data transmission and control, so that regional data transmission and verification are realized, and the RS485 unit directly connected with the electronic instrument and the pulse acquisition processing unit perform data verification.
As preferred, entrance guard's management module includes electromagnetic lock, radio frequency unit and the unit of making a video recording, the electromagnetic lock is established on the table chamber door for monitoring and control chamber door open-close state, the radio frequency unit is including setting up the radio frequency card that radio frequency read write line and cooperation used outside the table case door, the unit of making a video recording sets up at the table incasement, and the unit of making a video recording is towards the table chamber door for the personnel of opening the door shoot and send and confirm personnel's information to the main website registration. When the chamber door was not closed, the electromagnetic lock passed through the door magnetic switch and detected, output alarm signal simultaneously, when the personnel that open the door held the radio frequency card that corresponds and opened the table case, the electromagnetic lock dormancy temporarily, surpassed a period after, send alarm signal once more, under the state of opening the door, the photo of chamber door can regularly be shot to the unit of making a video recording, and the personnel's information that the record opened the door is sent.
Preferably, be connected with alarm module in the controller module, alarm module is connected with the power module electricity, sets up in the table case chamber door outside, alarm module includes speaker and a plurality of alarm lamp, the speaker is used for the broadcast to correspond alarm signal's pronunciation file, and the alarm lamp is received and is corresponded alarm signal and change colour or flash.
Preferably, the external communication module comprises an LORA communication circuit and an infrared communication circuit and is arranged in the meter box, and the external communication module is used for performing remote wireless communication with a master station or a palm computer, alarming and monitoring data.
Preferably, the environment management and control module is installed in the meter box and comprises one or more of an air circulation exhaust device, a semiconductor heating refrigerator and a water drainage device.
The invention has the beneficial effects that: the invention can monitor the environmental state and the electric energy information of the meter box in real time and has the functions of sound-light alarm and remote data transmission alarm. Specifically, the pulse signal acquisition and processing unit, the carrier unit and the RS285 module are used for respectively and synchronously acquiring the electric energy data, so that the multi-layer data check function is achieved, the situations of false alarm or under-alarm caused by part of equipment faults are reduced, and the data accuracy is improved. Through smoke transducer, temperature sensor, humidity transducer, vibration sensor, the corresponding environmental status information of level sensor discernment, the rethread field data bus interface transmits to environmental monitoring module and controller module and carries out unified processing judgement, and whole control process is more high-efficient, accurate, has avoided because the operation equipment trouble that environmental factor leads to, improves table case equipment operation's stability and security. Adopt environmental management and control modules such as air cycle exhaust apparatus, semiconductor heating refrigerator, drainage apparatus can improve the extreme environment in the table case, possess the advantage of guarantee equipment operation safety. When the abnormal state signal is detected, the controller module transmits a corresponding alarm signal to a master station or a palm machine and the like, for example, when a smoke fire occurs, the indicator lamp A and the loudspeaker B give out sound and light alarm. Can measure chamber door open and close state through entrance guard's module, through the personnel that open the door of radio frequency unit discernment, the personnel face that open the door is shot to the rethread camera unit, and the storage is sent to the main website, and the security is high.
Drawings
FIG. 1 is a schematic block diagram of a meter box monitor provided by the present invention.
Figure 2 is a circuit diagram of a smoke sensor provided by the present invention.
FIG. 3 is a circuit diagram of a temperature sensor according to the present invention.
In the figure: 1-an environment monitoring module, 2-an electric energy metering module, 3-a controller module, 4-an environment management and control module, 5-an external communication module, 6-an entrance guard management module, 7-a storage module, 8-a power supply module, 9-a field data bus interface, 10-a temperature sensor, 11-a smoke sensor, 12-a humidity sensor, 13-a vibration sensor, 14-a water level sensor, 15-an analog-digital conversion unit, 16-a pulse acquisition and processing unit, 17-a carrier unit, 18-an RS485 unit, 19-an electromagnetic lock, 20-a radio frequency unit, 21-a camera unit, 22-an alarm module, 23-an LORA communication circuit, 24-an infrared communication circuit, 25-an air circulation exhaust device and 26-a semiconductor heating refrigerator, 27-a drainage facility.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): as shown in fig. 1, the meter box monitor of the present embodiment includes an environment monitoring module 1 for multidimensional monitoring of environmental parameters in a meter box, an electric energy metering module 2 for monitoring an electrical state in the meter box, a controller module 3, an environment management and control module 4 for improving field environmental management and control, and an external communication module 5 for remote transmission and alarm, where the controller module 3 is connected to the environment monitoring module 1, the electric energy metering module 2, the environment management and control module 4, and the external communication module 5, respectively; environmental monitoring module 1 realizes the data acquisition such as temperature, smog, humidity, vibration to the incasement key point of table, and electric energy metering module 2 realizes monitoring electric wire netting state and short distance data transmission control through pulse acquisition circuit, digital ammeter 235 interface and carrier unit, and controller module 3 carries out preliminary diagnosis aassessment to the equipment state according to the variable that monitors, other modules of coordinated control and send its data to the rear end main website through external communication module 5.
The controller module 3 is further connected with an access control management module 6, a storage module 7 and a power module 8 (not shown in the figure) of a monitoring meter box door and identity recognition, the power module 8 is respectively electrically connected with the environment monitoring module 1, the electric energy metering module 2, the controller module 3, the environment control module 4, the external communication module 5 and the access control module 6, and the power module 8 can provide 3.3V, 5V and 12V direct-current voltage.
As shown in fig. 1, in this embodiment, the environment monitoring module 1 is installed in a meter box, the environment monitoring module 1 is respectively connected to multiple sensors of the monitoring meter box through an on-site data bus interface 9, including a temperature sensor 10, a smoke sensor 11, a humidity sensor 12, a vibration sensor 13 and a water level sensor 14, and is respectively installed at corresponding monitoring points through the multiple sensors to record various environments and operating states of the device on line.
As shown IN fig. 2, IN the present embodiment, the temperature sensor 10 is disposed at a key monitoring point IN the meter box, the key monitoring point includes a line access terminal, an air switch contact, a voltage transformation and distribution connector and a plurality of air temperature measurement points, the temperature sensor 10 includes a thermistor RT1, an amplifier IC2, a reference voltage source IC3, a resistor R1, a resistor R2, a resistor R3, a resistor R4 and an analog-to-digital conversion unit 15, a pin 1 of the thermistor RT1 is connected to a pin + IN of an amplifier IC2, a pin 2 of the thermistor RT1 is connected to a pin VOUT of a reference voltage source IC3 after being connected to a resistor R2, a pin 3 of the thermistor RT1 is connected to a ground signal GND, a pin-RG of the amplifier IC2 is connected to a pin + RG pin of an amplifier IC2 after being connected to a pin RG series resistor R1, a pin-IN of the amplifier IC2 is connected to a pin GND, a pin-GND terminal-n-R4 of the amplifier IC2 is connected to a ground signal, The + VS pin is connected with the anode of the power module 8, the OUTPUT pin of the amplifier IC2 is connected with the analog-to-digital conversion unit 15, the analog-to-digital conversion unit 15 is connected with the controller module 3, the GND pin of the reference voltage source IC3 is connected with the ground signal GND, the VIN pin is connected with the anode of the power module 8, and the VOUT signal of the reference voltage source IC3 is connected with the-IN pin of the amplifier IC2 after being connected with the resistor R3 IN series. The resistors R2, R3, R4 and the thermistor RT1 form a bridge circuit, and the reference voltage source IC3 supplies the bridge circuit with a standard 3.00V voltage. The amplifier IC2 accurately widens the voltage difference across the bridge by a factor of 51 with a widening reverberating resistance of the 2K resistor R1. The chip IC1 in the smoke sensor 101 in this embodiment is KD 9561.
As shown in fig. 3, in the present embodiment, the smoke sensor 11 includes an infrared light emitting diode VD1, a diode VD2, a phototransistor VT1, a transistor VT2, a transistor VT3, a transistor VT4, a sliding resistor RP1, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a capacitor C1, an indicator light a, a speaker B, and a chip IC1, an anode of the infrared light emitting diode VD1 is connected to an anode of the power module 8, a cathode of the infrared light emitting diode VD 86vd 28 is connected to a collector of the phototransistor VT1, an emitter of the phototransistor VT1 is connected to the ground signal GND through a resistor R11, a collector of the phototransistor VT 11 is connected to the ground signal GND through a sliding resistor 36rp 72, a collector of the phototransistor VT 11 is connected to a base of the transistor VT 11, a base of the transistor VT 11 is connected to the ground signal GND, an emitter of the transistor VT 11 is connected to the ground signal GND, the collector of the triode VT2 is connected with the base of a triode VT3 through a resistor R13, the base of the triode VT3 is connected with the power module 8 through a resistor R12, the emitter of the triode VT3 is connected with a ground signal GND, the collector of the triode VT3 is connected with a SEL1 pin of a chip IC1, a VDD pin of the chip IC1 is connected with the positive electrode of the power module 8 through a resistor R14, a pin 3 of the chip IC1 is connected with the base of a triode VT4, two ends of a resistor R15 are respectively connected with a pin 6 and a pin 7 of the chip IC1, the emitter of the triode VT4 is connected with the ground signal GND, the collector of the triode VT4 is connected with the positive electrode of the power module 8 after being connected with an indicator lamp A and a loudspeaker B in series, and the collector of the triode VT4 is connected with the controller module 3. In this embodiment, the thermistor RP1 in the temperature sensor 102 is PT100, the amplifier IC2 uses an AD623 chip, and the reference voltage source IC3 is a REF3030 chip.
As shown in fig. 1, in this embodiment the electric energy metering module 2 includes a pulse acquisition processing unit 16, a carrier unit 17 and an RS485 unit 18 directly connected to the electronic instrument, the pulse acquisition processing unit 16 acquires and processes voltage and current state signals of the power grid, the carrier unit 17 identifies the power grid carrier signals and is connected to the controller module 3 to realize short-distance data transmission and control, so as to realize regional data transmission and verification, and the RS485 unit 18 directly connected to the electronic instrument and the pulse acquisition processing unit 16 perform data verification.
As shown in fig. 1, in this embodiment the access control management module 6 includes an electromagnetic lock 19, a radio frequency unit 20 and a camera unit 21, the electromagnetic lock 19 is established on the meter box door for monitoring and controlling the open and close state of the box door, the radio frequency unit 20 includes a radio frequency reader-writer arranged outside the meter box door and a radio frequency card used in cooperation, the camera unit 21 is arranged in the meter box, and the camera unit 21 faces the meter box door for taking a picture of a person opening the door and sending the picture to the master station to register and confirm personnel information. When the chamber door is not closed, electromagnetic lock 19 detects through the door magnetic switch, exports alarm signal simultaneously, when the personnel of opening the door hold the radio frequency card that corresponds and open the table case, and electromagnetic lock 19 is the dormancy temporarily, surpasss a period of time after, sends alarm signal again, and under the state of opening the door, camera unit 21 can regularly shoot the photo of chamber door department, and the recording personnel's information of opening the door sends.
As shown in fig. 1, in this embodiment the controller module 3 is connected with an alarm module 22, the alarm module 22 is electrically connected with the power module 8 and is disposed outside the door of the meter box, the alarm module 22 includes a speaker and a plurality of alarm lamps, the speaker is used for playing a voice file corresponding to an alarm signal, and the alarm lamps receive the corresponding alarm signal to change color or flash.
As shown in fig. 1, in this embodiment, the external communication module 5 includes a LORA communication circuit 23 and an infrared communication circuit 24, which are disposed in the meter box, and the external communication module 5 is used for performing remote wireless communication with a master station or a palm computer, and generating an alarm and monitoring data.
The environmental control module 4 in this embodiment is installed in a meter box, and includes one or more of an air circulation exhaust device 25, a semiconductor heating and cooling device 26, and a drainage device 27, and specific devices may be selected according to actual needs. Wherein, air circulation exhaust apparatus 25 includes and sets up the gas vent in table case low department, correspond the position at the table case eminence and set up air inlet and fan, difference in height through gas vent and air inlet, even breeze and low power fan also can form the convection current way, be favorable to air circulation, help improves the interior humidity of table case, discharge smog or harmful gas, the semiconductor heating refrigerator is opened when the table incasement environment is higher, gas vent and air inlet change good air inlet of gas vent and fan for the shutter formula structure according to monitoring data, can guarantee that the interior electrical equipment of table case is in suitable operating temperature.
The temperature measuring scheme comprises the following steps: assuming that the environment is 0 ℃, the resistance value of the thermistor RT1 is 100 ohms, and the voltage difference of the bridge in the circuit is 0V, if 0V is detected, the environment temperature is 0 ℃. If the environmental temperature is less than 0 ℃, the resistance value of the thermistor RT1 is less than 100 ohms, the in-phase voltage is smaller than the reverse-phase voltage at the moment, the measured voltage is still 0V, therefore, the circuit cannot measure the temperature below 0 ℃, the maximum output voltage of the amplifier is 3.3V, the amplification factor is 51 times, therefore, the maximum value of the voltage difference of the bridge is 64.7mV, the voltage of the reverse-phase arm of the bridge obtained at the moment is 142.86mV, the voltage of the in-phase arm is the voltage difference of the bridge plus the voltage of the reverse-phase arm of the bridge to obtain 207.56mV, the corresponding resistance value of the thermistor RT1 is 148.66 ohms, and the maximum temperature measuring point is confirmed by checking a data table.
The smoke measuring scheme comprises the following steps: when the monitored environment is clean and smokeless, the infrared light emitting diode VD1 emits light with a preset initial current. The internal resistance of the infrared light is reduced after the infrared light is received by the phototriode VT1, so that the current in the series circuit of VD1 and VT1 is increased, the luminous intensity of the infrared light-emitting diode VD1 is correspondingly increased, the internal resistance of the phototriode is further reduced, a strong positive feedback process is formed by the circulation until the current in the series photosensitive circuit reaches the maximum value, the voltage drop generated on R11 leads VT2 to be conducted through VD2, VT3 is cut off, and the indicator lamp A does not work. When smoke in the monitored environment suddenly increases, the light transmittance in the air is deteriorated, at the moment, the luminous flux received by the phototriode VT1 is reduced, the internal resistance is increased, the current in the series photosensitive circuit is reduced, and the luminous intensity of the light-emitting diode VD11 is reduced. The circulation forms a negative feedback process, the current in the series photosensitive circuit is reduced to the initial current value, the voltage on the resistor R11 is also reduced to 1.2V, the VT2 is cut off, the VT3 is conducted, the indicator lamp A is lightened, and the loudspeaker B gives an alarm.
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 only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A meter box monitor, comprising: the system comprises an environment monitoring module (1) for monitoring environment parameters in a meter box in a multidimensional manner, an electric energy metering module (2) for monitoring the electrical state in the meter box, a controller module (3), an environment control module (4) for improving the field control of the environment, and an external communication module (5) for remote transmission and alarm, wherein the controller module (3) is respectively connected with the environment monitoring module (1), the electric energy metering module (2), the environment control module (4) and the external communication module (5); the environment monitoring module (1) realizes data acquisition such as temperature, smog, humidity, vibration to the key point in the meter box, and electric energy metering module (2) realizes monitoring electric wire netting state and short distance data transmission control through pulse acquisition circuit, digital ammeter 235 interface and carrier unit, and controller module (3) carries out preliminary diagnosis aassessment to the equipment state according to the variable that monitors, other modules of coordinated control and with its data send to the rear end main website through external communication module (5).
2. The meter box monitor according to claim 1, wherein the controller module (3) is further connected with an access control management module (6) for monitoring a meter box door and identifying identity, a storage module (7) and a power supply module (8), the power supply module (8) is electrically connected with the environment monitoring module (1), the electric energy metering module (2), the controller module (3), the environment control module (4), the external communication module (5) and the access control module (6) respectively, and the power supply module (8) can provide 3.3V, 5V and 12V direct current voltage.
3. The meter box monitor according to claim 1, wherein the environment monitoring module (1) is installed in a meter box, the environment monitoring module (1) is respectively connected to a plurality of sensors for monitoring the meter box through a field data bus interface (9), the sensors comprise a temperature sensor (10), a smoke sensor (11), a humidity sensor (12), a vibration sensor (13) and a water level sensor (14), the sensors are respectively arranged at corresponding monitoring points, and various environment and operation states of the equipment are recorded on line.
4. A meter box monitor according to claim 3, wherein the temperature sensor (10) is arranged at a critical monitoring point IN the meter box, the critical monitoring point comprises a line access terminal, an air switch contact, a voltage transformation power distribution connector and a plurality of air temperature measuring points, the temperature sensor (10) comprises a thermistor RT1, an amplifier IC2, a reference voltage source IC3, a resistor R1, a resistor R2, a resistor R3, a resistor R4 and an analog-to-digital conversion unit (15), a pin 1 of the thermistor RT1 is connected with a pin + IN of an amplifier IC2, a pin 2 of a thermistor RT1 is connected with a pin VOUT of a reference voltage source IC3 after being connected with a pin R2, a pin 3 of a thermistor RT1 is connected with a ground signal GND, a pin RG of an amplifier IC2 is connected with a pin + RG after being connected with a pin R1 of an amplifier IC2, a pin-IN of an amplifier IC2 is connected with a pin R4, a pin is connected with a ground after being connected with a pin, The VS pin and the REF pin are connected with the anodes of a power module (8) through ground signals GND and VS pins, the OUTPUT pin of the amplifier IC2 is connected with an analog-digital conversion unit (15), the analog-digital conversion unit (15) is connected with the controller module (3), the GND pin of the reference voltage source IC3 is connected with the anodes of the ground signals GND and VIN pins of the power module (8), and the VOUT signal of the reference voltage source IC3 is connected with the-IN pin of the amplifier IC2 after being connected with a resistor R3 IN series.
5. A meter box monitor according to claim 3, wherein the smoke sensor (11) comprises an infrared light emitting diode VD1, a diode VD2, a phototransistor VT1, a transistor VT2, a transistor VT3, a transistor VT4, a slide rheostat RP1, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a capacitor C1, an indicator light A, a speaker B and a chip IC1, wherein the anode of the infrared light emitting diode VD1 is connected to the anode of the power supply module (8), the cathode of the infrared light emitting diode VD1 is connected to the collector of the phototransistor VT1, the emitter of the phototransistor VT1 is connected to the ground signal GND through the resistor R11, the collector of the phototransistor VT1 is connected to the ground signal GND through the slide rheostat RP1, the collector of the phototransistor VT1 is connected to the base of the transistor VT2 through the diode VD2, and the base of the transistor VT2 is connected to the ground signal GND through the capacitor C VT1, the emitter of the triode VT2 is connected with a ground signal GND, the collector of the triode VT2 is connected with the base of the triode VT3 through a resistor R13, the base of the triode VT3 is connected with a power supply module (8) through a resistor R12, the emitter of the triode VT3 is connected with the ground signal GND, the collector of the triode VT3 is connected with a SEL1 pin of a chip IC1, a VDD pin of the chip IC1 is connected with the positive electrode of the power supply module (8) through a resistor R14, a 3 pin of the chip IC1 is connected with the base of the triode VT4, two ends of the resistor R15 are respectively connected with a 6 pin and a 7 pin of the chip IC1, the emitter of the triode VT4 is connected with the ground signal GND, the collector of the triode VT4 is connected with the positive electrode of the power supply module (8) after being connected with an indicator lamp A and a loudspeaker B in series, and the collector of the triode VT4 is connected with a controller module (3).
6. The meter box monitor according to claim 1, wherein the electric energy metering module (2) is connected with the pulse acquisition and processing unit (16), the carrier unit (17) and the RS485 unit (18) of the direct-connected electronic meter, the pulse acquisition and processing unit (16) acquires and processes voltage and current state signals of a power grid, the carrier unit (17) identifies the carrier signals of the power grid and is connected with the controller module (3) to realize short-distance data transmission and control, so that regional data transmission verification is realized, and the RS485 unit (18) of the direct-connected electronic meter and the pulse acquisition and processing unit (16) perform data verification.
7. The meter box monitor of claim 1, wherein the access control module (6) comprises an electromagnetic lock (19), a radio frequency unit (20) and a camera unit (21), the electromagnetic lock (19) is arranged on a meter box door and used for monitoring and controlling the opening and closing state of the meter box door, the radio frequency unit (20) comprises a radio frequency reader-writer arranged outside the meter box door and a radio frequency card used in cooperation, the camera unit (21) is arranged in the meter box, and the camera unit (21) faces the meter box door and used for taking a picture of a door opening person and sending the picture to a master station to register and confirm personnel information.
8. The meter box monitor according to claim 1, wherein an alarm module (22) is connected to the controller module (3), the alarm module (22) is electrically connected to the power module (8) and disposed outside a door of the meter box, the alarm module (22) comprises a speaker and a plurality of alarm lamps, the speaker is used for playing a voice file corresponding to an alarm signal, and the alarm lamps receive the corresponding alarm signal to change color or flash.
9. A meter box monitor according to claim 1, characterised in that the external communication module (5) comprises a LORA communication circuit (23) and an infrared communication circuit (24) arranged inside the meter box, the external communication module (5) being adapted to communicate wirelessly remotely with a master station or palm machine, to generate alarm and monitor data.
10. A meter box monitor according to claim 1, wherein the environmental management module (4) is mounted within a meter box and comprises one or more of an air circulation exhaust (25), a semiconductor heating and cooling refrigerator (26), and a drain (27).
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| CN202110590957.6A CN113358925A (en) | 2021-05-28 | 2021-05-28 | Meter box monitor |
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| CN202110590957.6A CN113358925A (en) | 2021-05-28 | 2021-05-28 | Meter box monitor |
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| CN113358925A true CN113358925A (en) | 2021-09-07 |
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