CN211655569U - Handheld intelligent electric line parameter inspection device and system - Google Patents

Abstract

The utility model discloses an electric circuit parameter inspection device of hand-held type intelligence and system belongs to electric fire control technical field. The wireless communication system comprises an MCU, an electric circuit parameter acquisition part and a wireless communication part which are electrically connected with the MCU; the electric line parameter acquisition part comprises a single chip microcomputer electrically connected with the microcontroller MCU, an electric line voltage parameter acquisition circuit, an electric line impedance detection circuit, an electric line ground fault current leakage protector disconnection time acquisition circuit and a plug part, wherein the electric line voltage parameter acquisition circuit, the electric line impedance detection circuit and the electric line ground fault current leakage protector disconnection time acquisition circuit are simultaneously electrically connected with the single chip microcomputer, and the plug part is electrically connected with the electric line voltage parameter acquisition circuit; this inspection device disect insertion detects the supply socket of electric circuit, can know effectively to user's end electric circuit particular case, helps discovering the conflagration hidden danger in early stage, for handheld portable, with low costs, maintenance convenience, non professional technical personnel also can carry out patrolling and examining of on-the-spot electric fire hidden danger, promote building electric circuit conflagration hidden danger patrolling and examining management level.

Description

Handheld intelligent electric line parameter inspection device and system

Technical Field

The utility model belongs to the technical field of electric fire control, concretely relates to hand-held type intelligence electric line parameter inspection device and system.

Background

In the prior art, products are mainly manufactured according to GB14287-2014 electrical fire monitoring system, the specification only requires detecting the residual current and the temperature of an electrical circuit, and the electrical fire monitoring system developed by some enterprises is physically connected with electrical fire monitoring equipment through field construction wiring on one hand, although the temperature and the residual current parameters of the field electrical circuit are monitored in real time, the system cannot be installed and used for some special buildings which are not allowed to lay pipelines, for example: ancient buildings, wood structure buildings, large-span space structure buildings and other buildings, most of equipment is single-machine or system type, the problems of large volume, complex installation, high cost and the like generally exist, the performance and the service life of the equipment can be reduced after the equipment is exposed on the site for a long time, and the maintenance cost of the equipment can be increased. On the other hand, the existing electrical fire monitoring system detects residual current and temperature at the distribution box end, so that all devices in the electrical fire monitoring system are required to be directly installed inside each distribution box of a building, real-time detection, construction and installation cost and use and maintenance cost are high, only the distribution box level can be monitored, and a user-side power socket cannot be monitored. Although the residual current and temperature abnormality of the electrical line are two direct factors causing the electrical fire, if the abnormality of other parameters causing the abnormality of the two parameters, namely other indirect factors causing the electrical fire, can be detected in advance, the method is more helpful for finding the fire hazard early, for example, the fire hazard is predicted by detecting the change of the line sequence of the electrical line, the impedance of the electrical line and the like, and the method is particularly significant for special buildings.

In addition, the patrol management of the electrical line in the building is always a difficult point of property management, whether a patrol worker really goes to the site to patrol the fire hazard of the electrical line or not can accurately judge the fire hazard, and the manager cannot judge the fire hazard. Moreover, the fire and water are in no way, the investigation of the fire hazard is not slow, and under the condition that professional technicians are deficient or the professional technicians are not on duty, the non-professional technicians are expected to be capable of carrying out the inspection of the site electrical fire hazard according to the inspection plan.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model provides an electric circuit parameter inspection device of hand-held type intelligence and system.

A handheld intelligent electric circuit parameter inspection device comprises a front shell (1) and a rear shell (11) which are arranged at the front end and the rear end of the inspection device, and a display screen through hole (2) which is integrally formed at the upper part of the front shell (1), wherein a buzzer through hole (3) and a key through hole (4) are integrally formed below the display screen through hole (2) in sequence; the inner components of the patrol device are contained in a closed cavity formed by the front shell (1) and the rear shell (11): the electric circuit comprises a lithium battery (10), an electric circuit parameter acquisition part (9), a plug part (14) formed at the upper end of the electric circuit parameter acquisition part (9), a main control board (8), a display screen (7) and a key part (6), wherein a key on the key part (6) penetrates through a key through hole (4) from the inner side of a front shell (1), and the display screen (7) penetrates into a display screen through hole (2) from the inner side of the front shell (1) and is fixedly embedded; the main control board (8) is integrated with an MCU, a wireless communication part, a buzzer, an SRAM memory, an FLASH memory and an SD card; the electric circuit comprises a lithium battery (10), an electric circuit parameter acquisition part (9), a display screen (7), a key part (6), a wireless communication part, a buzzer, an SRAM memory, an FLASH memory and an SD card which are all electrically connected with the MCU at the same time.

According to the handheld intelligent electric line parameter patrol device, the wireless communication part is formed by connecting a WiFi module, an NB-IoT module and a Bluetooth wireless network module in parallel.

According to hand-held type intelligence electric line parameter inspection device, electric line parameter acquisition portion includes the singlechip that is connected with the MCU electricity, simultaneously with singlechip electric connection's electric line voltage parameter acquisition circuit, electric line impedance detection circuitry and electric line earth fault current leakage protector off-time acquisition circuit to and the plug portion of being connected with electric line voltage parameter acquisition circuit electricity.

According to the handheld intelligent electric line parameter inspection device, 220V voltage acquired by the electric line voltage parameter acquisition circuit through the plug part JP1 is subjected to halving voltage division through 6 300K omega resistors with power of 0.5W, secondary voltage reduction distribution is performed through 3 100K and 3 1K resistors after voltage division, and voltage values LN, NE and LE distributed by secondary voltage reduction can be directly acquired by the single chip microcomputer.

According to the handheld intelligent electric line parameter inspection device, the electric line impedance detection circuit controls the on-off of a 10 omega/8W power resistor by controlling the on-off of the thyristor Q1 through the single chip microcomputer so as to detect the line impedance.

According to the handheld intelligent electric line parameter inspection device, the electric line ground fault current leakage protector is formed by connecting an RCD (resistor capacitor diode) disconnection time acquisition circuit and a GFCI (ground fault current leakage) disconnection time acquisition circuit in parallel so as to detect the RCD disconnection time and the GFCI disconnection time; the GFCI off-time acquisition circuit is characterized in that a PIC single chip microcomputer controls the on-off of a thyristor Q2 to realize that a resistor of 44K omega is connected in parallel with a 106 capacitor and then connected between a live wire and a ground wire in series, and 5mA current is applied between the live wire and the ground wire; the RCD off-time acquisition circuit is a PIC singlechip, and a resistor of 7.3K omega is connected in parallel with a 106 capacitor and then connected between a live wire and a ground wire in series by controlling the on-off of a thyristor Q3, and a current of 30mA is added between the live wire and the ground wire.

An intelligent electric line parameter patrol system comprises a building electric fire hazard patrol system positioned on an upper computer, a position information module and any one of the handheld intelligent electric line parameter patrol devices;

the electric line patrol device is connected with the building electric fire hidden danger patrol system through a wireless network, and transmits the measured electric line parameters to the building electric fire hidden danger patrol system in real time; the position information module is fixedly arranged at a position near a power socket of the electrical circuit uniquely corresponding to the position information module; the position information module is internally provided with position information of a power socket which is only corresponding to the position information module and is defined by a building electrical fire hazard patrol system in advance; the electric line patrol device establishes a connection relation with the position information module through a wireless network so as to acquire the position information of the electric line to be patrolled and transmit the position information to the building electric fire hazard patrol system; the building electrical fire hazard patrol system judges whether the electrical line is a planned to-be-patrolled electrical line according to a preset electrical line patrol plan, if so, the electrical line patrol device gives a correct indication of the electrical line, an operator utilizes the electrical line patrol device to detect the electrical line, and if not, the electrical line patrol device gives a wrong indication of the electrical line, and the operator finds the correct to-be-patrolled electrical line again.

According to the intelligent electric line parameter patrol system, the position information module is a Bluetooth label, and the Bluetooth label is fixed at a position near the power socket which is only corresponding to the Bluetooth label.

The utility model provides a hand-held type intelligence electric line parameter inspection device structure is handheld portable, with low costs, convenient to use, maintenance are convenient, the maintenance cost is low, can directly insert the supply socket on the electric line and detect, can know effectively the specific conditions to the electric line of user's end, avoid the user to appear the electric shock or damage drawbacks such as user's electrical equipment when using supply socket; the indirect factors causing the electrical fire are detected in advance, and the early detection of the fire hazard is facilitated. Under the condition that professional technicians are deficient or the professional technicians are not on duty, non-professional technicians can also patrol the hidden danger of the on-site electrical fire according to the patrol plan; the utility model provides an intelligent electric circuit parameter inspection system can report the LNE order of the electric circuit of check point, LNE voltage parameter, N-PE parameter, line impedance, RCD, GFCI disconnection time isoparametric to building electric fire hidden danger inspection system through wireless transmission network in real time, has solved the drawback that traditional electric fire monitoring device can't pass data in real time, and can't lay wire in the special building when adopting the wired transmission network problem; the utility model provides an intelligence electric line parameter inspection system has increased the inspection function of location, the patroller location fixed point when trouble hidden danger investigation, has promoted the inspection management of fire control facility/electric line conflagration hidden danger in the building.

Drawings

Fig. 1 is a schematic structural view of the handheld intelligent electric line parameter inspection device of the present invention;

fig. 2 is a schematic structural view of an electric circuit parameter acquisition part in the handheld intelligent electric circuit parameter inspection device of the utility model;

FIG. 3 is a circuit diagram of a chip microcomputer and its minimum system in the handheld intelligent electric line parameter inspecting device of the present invention;

FIG. 4 is a circuit diagram of the voltage parameter acquisition circuit of the electric circuit in the handheld intelligent electric circuit parameter inspection device of the present invention;

FIG. 5 is a diagram of an impedance acquisition circuit for an electrical line in the handheld intelligent electrical line parameter inspection device of the present invention;

FIG. 6 is a circuit diagram of the acquisition circuit of the off-time of the earth fault current leakage protector of the electric circuit in the handheld intelligent electric circuit parameter inspecting device of the utility model;

fig. 7 is a schematic diagram of a preferred structure of the handheld intelligent electric line parameter inspection device of the present invention;

fig. 8 is an exploded view of the preferred structure of the handheld intelligent electric line parameter inspection device of the present invention;

fig. 9 is an interface circuit diagram of an STM32F407ZGT6 type ARM chip and a PIC24FV32KA304 type single chip microcomputer according to the present invention;

fig. 10 is a schematic structural view of an intelligent electric line parameter inspection system of the present invention;

fig. 11 is a schematic diagram of a preferred structure of the intelligent electric line parameter inspection system of the present invention;

wherein, 1 — front case; 2, through holes of a display screen; 3-buzzer through hole; 4-key through hole; 5-plug; 6-key part; 7, a display screen; 8, a main control board; 9-electric circuit parameter acquisition part; 10-a lithium battery; 11-rear housing; 12-through holes for inserting Sim cards; 13-a charging port; 14-plug part.

Detailed Description

The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings.

The first aspect of the present embodiment provides a handheld intelligent electric line parameter inspection device that can be easily operated by a non-professional technician, and that is small in size, and that can be handled by the non-professional technician by hand to perform measurement. The handheld intelligent electric line parameter patrol device shown in fig. 1, hereinafter referred to as patrol device for short, comprises an electric line parameter acquisition part, a microcontroller MCU, a wireless communication part, a display screen, a key part, an alarm circuit, a power supply, a memory card and a temporary storage part. The electric circuit parameter acquisition part, the wireless communication part, the display screen, the key part, the alarm circuit, the power supply, the storage card and the temporary storage part are simultaneously and electrically connected with the microcontroller MCU. Wherein the content of the first and second substances,

the electric line parameter collecting part comprises a single chip microcomputer electrically connected with the microcontroller MCU as shown in fig. 2, an electric line voltage parameter collecting circuit, an electric line impedance detecting circuit, an electric line ground fault current leakage protector off-time collecting circuit and a plug part electrically connected with the electric line voltage parameter collecting circuit, wherein the electric line voltage parameter collecting circuit, the electric line impedance detecting circuit and the electric line ground fault current leakage protector off-time collecting circuit are electrically connected with the single chip microcomputer. The plug part is used for being inserted into a user side power socket of an electric circuit to be tested so as to be connected with the electric circuit; the electric line voltage parameter acquisition circuit is used for receiving the control of the singlechip and acquiring an LNE voltage parameter and an N-PE (discharge gap) parameter of the electric line by matching with the singlechip; the electric line impedance detection circuit is used for receiving the control of the single chip microcomputer and detecting the electric line impedance in cooperation with the single chip microcomputer; the off-time acquisition circuit of the electric line ground fault current leakage protector is used for receiving the control of the singlechip and detecting the off-time of the ground fault current leakage protector arranged in the electric line by matching with the singlechip; the single chip microcomputer is used for controlling the electric line voltage parameter acquisition circuit to work so as to acquire an LNE voltage parameter and an N-PE (discharge gap parameter) of the electric line and transmit the LNE voltage parameter and the N-PE to the microcontroller MCU; controlling the electric line impedance detection circuit to work so as to detect the electric line impedance and transmit the electric line impedance value to the microcontroller MCU; and controlling the work of the off-time acquisition circuit of the earth fault current leakage protector of the electric line so as to detect the off-time of the earth fault current leakage protector arranged in the electric line and transmit the off-time to the microcontroller MCU.

The wireless communication part is used for establishing wireless communication connection between the microcontroller MCU and other equipment outside the inspection device;

the display screen is used for displaying an electric line impedance value, the disconnection time of the earth fault current leakage protector, an LNE voltage parameter value, an N-PE parameter, an electric line sequence judgment result and prompt information which are sent by the microcontroller MCU;

the key part plays a role in inputting data to the MCU and/or sending an operation control command of the patrol device;

the alarm circuit gives an alarm when the line sequence is wrong or the voltage value is out of tolerance, and can give an alarm by sound and/or light, and preferably gives an alarm by sound by a buzzer;

the power supply is used for supplying power to all parts of the inspection device, and because the inspection device is handheld, the smaller the volume and the weight is, the better the inspection device is, the lithium battery is preferably selected, so that the inspection device is more convenient and faster, and the maintenance cost of the inspection device is also reduced;

the temporary storage part is used for temporarily storing data sent by the microcontroller MCU, and preferably selects an SRAM memory and a FLASH memory;

the memory card is used for permanently storing data sent by the MCU, preferably an SD card;

the microcontroller MCU can be a common singlechip, an ARM or a DSP chip, is used for receiving LNE voltage parameters, N-PE (discharge gap) parameters, electric line impedance values and disconnection time of the earth fault current leakage protector of the electric line, which are acquired by the electric line parameter acquisition part, storing the LNE voltage parameters, the N-PE (discharge gap) parameters, the electric line impedance values and the disconnection time of the earth fault current leakage protector in the temporary storage part and the memory card, and sending the LNE voltage parameters, the N-PE parameter, the N-PE; judging whether the line sequence of the electric circuit is correct or not according to the received LNE voltage parameter and the standard line sequence, and simultaneously sending a sequence judgment result to a display screen for displaying; when the line sequence is wrong or the voltage value is out of tolerance (the plus-minus out-tolerance range is (+7 percent, -10 percent)), an acoustic and/or optical alarm is carried out, and alarm prompt information of the line sequence error or the voltage value out of tolerance is displayed on a display screen; the received information is transmitted to other equipment outside the patrol device through the wireless communication part, and/or data and/or command signals sent by other equipment outside the patrol device are received through the wireless communication part; and receiving patrol device operation control commands and/or data input by the key part.

Description of the sequence of electrical lines: taking a 220V power socket at a user end as an example, the socket has sequence requirements on a zero line, a live line and a ground line, and is an international general sequence, namely a standard sequence, but due to non-standardization of building construction, the sequence of the 220V power socket at many places is not connected in sequence, especially the zero line is reversely connected with the live line or the zero line is reversely connected with the ground line, and under the two reverse connection conditions, the power supply of external equipment is not influenced, so that a user cannot judge that the sequence is wrong at the position under a general condition, but the sequence is wrong, and the hidden danger of an electrical fire exists, and therefore, the judgment of the sequence of an electrical circuit is necessary.

Further, the single chip microcomputer adopts a PIC24FV32KA304 single chip microcomputer, and the minimum system of the single chip microcomputer is shown in FIG. 3. As shown in fig. 4, JP1 on fig. 4 represents a plug portion, when an operator inputs an operation command for acquiring an electric line voltage parameter or an electric line sequence through a key on a patrol device, 220V acquired back through the plug portion JP1 is firstly subjected to halving voltage division through 6 300K Ω resistors with power of 0.5W, and the divided values are LN, NE1 and LE1 in fig. 4; and then, carrying out secondary voltage reduction distribution through 3 100K and 3 1K resistors, wherein voltage values LN, NE and LE distributed by the secondary voltage reduction can be directly collected by a single chip microcomputer, and the single chip microcomputer sends voltage values between every two of a live wire L (live), a zero wire N (neutral) and a ground wire (EARTH WIRE) of the electric circuit collected by the single chip microcomputer to a microcontroller MCU. Under the normal condition, the voltage between the live wire and the zero line is 220V, the voltage between the live wire and the ground wire is 220V, and the voltage between the zero line and the ground wire is in the range of 0-3V. In the MCU, firstly, the serial numbers of a live wire, a zero wire and a ground wire are assumed to be 1, 2 and 3; and then judging the line sequence of the power socket according to the voltage detection values between every two three lines: if the voltage between 1 and 2 is 220V, then it can be determined that there is certainly a hot line between 1 and 2; and detecting the voltage between 1 and 3 and the voltage between 2 and 3, if the voltage between 1 and 3 is also 220V, deducing that the line with the sequence number 1 is a live line and the line with the sequence number 3 is a zero line, detecting the voltage between 2 and 3, and normally setting the voltage to be 0-3V, thereby deducing that the line with the sequence number 2 is a ground line naturally, namely, the deduction result is inconsistent with the previous assumption, judging that the line sequence of the power socket is wrong, reversely connecting the ground line and the zero line, outputting the judgment result of the line sequence error to a display screen by the MCU for displaying, and prompting an operator to adjust the line sequence on the display screen. The plug part can be directly inserted into a 220V user side power socket by adopting the electric line voltage parameter acquisition circuit, the LNE voltage parameter and the N-PE discharge gap parameter of a 220V power supply can be directly detected, although the 380V power supply can not be directly patrolled, the characteristics of strong electricity can be known, and because the 220V live wire is the 380V phase line, the superior 380V power supply can also be indirectly patrolled;

as shown in fig. 5, when an operator inputs an operation command for detecting the impedance of the electrical line through a key on the patrol device, the MCU gives an instruction to the PIC single-chip microcomputer, the PIC single-chip microcomputer controls the conduction of the thyristor Q1 through an IO port pin, after the detection is completed, the PIC automatically turns off the thyristor Q1, and controls the on-off of a 10 Ω/8W power resistor by controlling the on-off of the thyristor Q1 (model Q4004D3) to detect the impedance of the electrical line; when the power resistor is conducted into the electric circuit, a voltage drop is generated at two ends of the power resistor, the current of the electric circuit can be obtained through calculation, meanwhile, the voltage of the whole electric circuit is detected through the voltage parameter acquisition circuit shown in fig. 4, and then the current is divided by the voltage of the whole electric circuit, so that the current impedance of the electric circuit can be obtained.

The circuit for collecting the off-time of the earth fault Current leakage protector of the electric line is composed of an RCD (Residual Current Device) off-time collecting circuit and a GFCI (Ground fault circuit Interrupter) off-time collecting circuit, as shown in FIG. 6, and can detect the RCD off-time and the GFCI off-time simultaneously, the circuits of the two parts are connected in parallel, and terminals with the same network label are connected together. When an operator inputs an operation command for detecting the disconnection time of the electric line ground fault current leakage protector through a key on the patrol device, the MCU gives an instruction to the PIC singlechip. For the GFCI disconnection time acquisition circuit, the PIC single chip microcomputer controls the on-off of a thyristor Q2 (the model is Q4004D3) to enable a resistor of 44K omega to be connected in parallel with a 106 capacitor and then connected between a live wire (L) and a ground wire (E) in series, after a current of 5mA (simulated GFCI leakage current) is added between the live wire and the ground wire, the single chip microcomputer starts timing, the single chip microcomputer stops when the voltage acquisition circuit of the voltage parameter of the electric line detects that the voltage (220V) is changed into 0, the time is the GFCI disconnection time, and the single chip microcomputer transmits the time to the microcontroller MCU. The MCU displays the received GFCI disconnection time through the display screen, so that a user can judge the GFCI function according to the standard GFCI disconnection time, if the current GFCI disconnection time is within the standard GFCI disconnection time (for example, 25ms) preset by the user, the GFCI function of the electric line is good, and if not, the GFCI function of the electric line is judged to be unavailable. For the RCD off-time acquisition circuit, the PIC singlechip controls the on-off of a thyristor Q3 (model Q4004D3) to realize that a resistor of 7.3K omega is connected in parallel with a 106 capacitor and then connected between a live wire (L) and a ground wire (E), after a current of 30mA (simulating RCD leakage current) is added between the live wire and the ground wire, the singlechip starts timing, the time is the RCD off-time when the voltage parameter acquisition circuit of the electric line detects that the voltage (from 220V) is changed into 0, and the singlechip transmits the time to the microcontroller MCU. The MCU displays the RCD disconnection time received by the MCU through the display screen, so that a user can judge the RCD function according to the standard RCD disconnection time, if the current RCD disconnection time is within the standard RCD disconnection time (for example, 100ms) preset by the user, the RCD function of the electric line is good, and if not, the RCD function of the electric line is judged to be unavailable.

Further, when the microcontroller MCU establishes wireless connection with other devices outside the patrol apparatus, the wireless connection can be implemented by WiFi, NB-IoT and bluetooth wireless networks in the prior art, preferably, as shown in fig. 7, the wireless communication part integrates all three wireless network modules together, when the microcontroller MCU detects that the patrol apparatus is connected to a WiFi signal, the information can be transmitted through the WiFi signal, when the WiFi signal is not detected, the information can be transmitted through the NB-IoT network, when the patrol apparatus cannot detect any network communication signal, the microcontroller MCU stores the information into the internal SRAM/built-in SD card, and when the wireless communication connection signal exists, the information to be transmitted is transmitted, so as to ensure reliable application of wireless communication to the maximum.

Further, according to the above preferred mode of the handheld intelligent electric line parameter inspection device, the power supply adopts a lithium battery, the alarm circuit adopts a buzzer, the memory card adopts an SD card, and the temporary storage portion adopts an SRAM memory and a FLASH memory; as shown in fig. 8, the patrol device further comprises a front shell 1 and a rear shell 11 respectively arranged at the front end and the rear end of the patrol device, a display screen through hole 2 integrally formed at the upper part of the front shell 1, and a buzzer through hole 3 and a key through hole 4 integrally formed below the display screen through hole 2 in sequence; a through hole 12 for inserting an NB-Iot communication card (preferably a Sim card) and a charging port 13 are integrally formed on the lower end surface of the front shell 1, and a plug 5 which is matched with the end surface and is made of rubber materials and can be opened for plugging the through hole 12 and the charging port 13; the front case 1 and the rear case 11 form a closed chamber in which the internal components of the patrol device are housed/contained: lithium cell 10, electric line parameter acquisition portion 9, plug portion 14, main control board 8, display screen 7 and button portion 6 that form in electric line parameter acquisition portion 9 upper end, the button on button portion 6 passes button thru hole 4 from preceding casing 1 inboard, and display screen 7 passes into display screen thru hole 2 and inlays fixedly from preceding casing 1 inboard. The main control board 8 is integrated with a microcontroller MCU, a wireless communication unit, a buzzer, an SRAM memory, a FLASH memory, and an SD card, wherein the microcontroller MCU employs an ARM chip of model STM32F407ZGT6, and an interface circuit with the PIC24FV32KA304 type single chip microcomputer, as shown in fig. 9. A serial port WiFi module with the model of ESP8266, an NB-IoT module with the model of BC26 and a Bluetooth wireless module with the model of NRF52832 are integrated on the wireless communication part. The lithium battery 10, the electric circuit parameter acquisition part 9, the display screen 7, the key part 6, the wireless communication part, the buzzer, the SRAM memory, the FLASH memory and the SD card are electrically connected with the MCU at the same time.

The utility model discloses the second aspect provides an intelligence electric line parameter inspection system, as shown in fig. 10, including a building electric fire hidden danger inspection system who is located the host computer, a position information module and any kind of above-mentioned electric line inspection device. The electric line inspection device is connected with the building electric fire hazard inspection system through a wireless network, and is used for measuring the electric line parameters and transmitting the measured electric line parameters to the building electric fire hazard inspection system in real time. The construction electrical fire hazard patrol system stores the received electrical line parameters for professional technicians to judge whether a fire hazard exists; the position information module is fixedly arranged at a position near a power socket of the electrical circuit uniquely corresponding to the position information module; and the position information module is internally provided with position information of a power socket of the electrical circuit which is defined by the construction electrical fire hazard patrol system in advance and corresponds to the position information. The electric line patrol device establishes a connection relation with the position information module through a wireless network so as to acquire the position information of the electric line to be patrolled and transmit the acquired position information of the electric line to be patrolled to the building electric fire hidden danger patrol system. The building electrical fire hazard patrol system judges whether the received position information of the electrical line to be detected is the planned electrical line to be detected according to a preset electrical line patrol plan, if so, the electrical line patrol device gives correct indication of the electrical line, an operator uses the electrical line patrol device to detect the electrical line, and if not, the electrical line patrol device gives wrong indication of the electrical line, and the operator finds the correct electrical line to be detected again.

Further, as shown in fig. 11, the location information module in the intelligent electric line parameter patrol system is preferably a bluetooth tag. In order to avoid the bluetooth tag from falling off, being damaged and being picked up, the bluetooth tag needs to be firmly fixed at a position which is only corresponding to the bluetooth tag and is near a power socket connected on an electric circuit. When an operator holds a certain power socket of the inspection device to detect an electric circuit, the connection is established with the Bluetooth label through the Bluetooth network, so that the inspection and positioning of the operator are realized.

Further, in the intelligent electric line parameter patrol system with the preferred electric line patrol device, when an ARM chip with the model number of STM32F407ZGT6 detects that the patrol device is connected with a WiFi signal through an ESP8266 serial port WiFi module, information is transmitted to the building electric fire hazard patrol system through the WiFi signal; when the WiFi signal cannot be detected, an NB-Iot module with the model number of BC26 is used for driving an NB-Iot wireless communication mode to enable the inspection device to transmit information to the inspection system for the electrical fire hazard of the building through an NB-Iot network; when the patrol device cannot detect any transmittable signals (WiFi/NB-Iot), the STM32F407ZGT6ARM chip stores information in an internal SRAM/built-in SD card, and when a wireless connection signal exists, the patrol device transmits the information to be transmitted to the construction electrical fire hazard patrol system.

The utility model discloses an intelligence electric line parameter inspection system's one shot operation process as follows:

an operator holds the inspection device to an electric line site, and acquires the address information of the electric line through the position information module by using the inspection device; the position information module in the embodiment is a Bluetooth tag, an operator holds the patrol device by hand to a position near a power socket connected with an electric circuit, establishes connection with the Bluetooth tag fixed at the position through a Bluetooth network, and obtains the position information of the electric circuit; the patrol device transmits the electric line address information acquired from the position information module to a building electric fire hazard patrol system positioned on an upper computer through a wireless network, so that the positioning of operators is realized; the building electrical fire hazard patrol system judges whether the received position information of the electrical line is the electrical line in the patrol plan according to a preset electrical line patrol plan, if so, the system gives an indication of a correct electrical line through the electrical line patrol device, and if not, the system gives an indication of a wrong electrical line through the electrical line patrol device until the correct electrical line is found; an operator inputs a line sequence detection operation instruction through a key part of the handheld electric line patrol device, the handheld electric line patrol device is inserted into a socket near the position of an electric line through a power line through a plug part, the line sequence of the electric line is detected, a microcontroller MCU judges whether the line sequence of the electric line is correct or not according to voltage parameters of the electric line and a standard line sequence, and alarms when the line sequence is wrong; the voltage parameters of the electric circuit comprise an LNE voltage parameter and an N-PE discharge gap parameter; if the line sequence is correct, according to the inspection plan, an operator inputs the voltage parameter of the electric line, the impedance of the electric line or the disconnection time of the earth fault current leakage protector of the electric line for the second time through a key part of the handheld electric line inspection device, detects the voltage parameter of the electric line, the impedance of the electric line or the disconnection time of the earth fault current leakage protector of the electric line and transmits the detection result to the microcontroller MCU, and the microcontroller MCU stores the received parameter value into the temporary storage part and displays the parameter value on the display screen; the temporary storage part of the embodiment is an SRAM memory and a FLASH memory; the microcontroller MCU detects whether the inspection device is connected with a wireless network through the wireless communication part, and if so, the microcontroller MCU transmits information stored in the memory card to the inspection system for the electrical fire hazard of the building through the wireless network; if not, when the microcontroller MCU does not detect any wireless network signal, the microcontroller MCU stores the information into an internal storage card, and when a wireless network connection signal exists, the microcontroller MCU transmits the information to be transmitted to the building electrical fire hazard patrol system; the building electrical fire hazard patrol system stores the received information for professional technicians to judge whether fire hazards exist.

In the embodiment, an ARM chip of the STM32F407ZGT6 detects that the patrol device is connected with a WiFi signal through an ESP8266 type serial port WiFi module, and transmits information to a building electrical fire hazard patrol system through the WiFi signal; when the WiFi signal cannot be detected, an NB-Iot module with the model number of BC26 is used for driving an NB-Iot wireless communication mode to enable the inspection device to transmit information to the inspection system for the electrical fire hazard of the building through an NB-Iot network; when the patrol device cannot detect any transmittable signal (WiFi/NB-Iot), the STM32F407ZGT6ARM chip stores the information into the built-in SD card, and when a wireless connection signal exists, the patrol device transmits the information to be transmitted to the building electrical fire hazard patrol system;

the above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. The utility model provides a hand-held type intelligence electric line parameter inspection device which characterized in that: the patrol inspection device comprises a front shell (1) and a rear shell (11) which are arranged at the front end and the rear end of the patrol inspection device, a display screen through hole (2) which is integrally formed at the upper part of the front shell (1), and a buzzer through hole (3) and a key through hole (4) which are integrally formed in sequence below the display screen through hole (2); the inner components of the patrol device are contained in a closed cavity formed by the front shell (1) and the rear shell (11): the electric circuit comprises a lithium battery (10), an electric circuit parameter acquisition part (9), a plug part (14) formed at the upper end of the electric circuit parameter acquisition part (9), a main control board (8), a display screen (7) and a key part (6), wherein a key on the key part (6) penetrates through a key through hole (4) from the inner side of a front shell (1), and the display screen (7) penetrates into a display screen through hole (2) from the inner side of the front shell (1) and is fixedly embedded; the main control board (8) is integrated with an MCU, a wireless communication part, a buzzer, an SRAM memory, an FLASH memory and an SD card; the electric circuit comprises a lithium battery (10), an electric circuit parameter acquisition part (9), a display screen (7), a key part (6), a wireless communication part, a buzzer, an SRAM memory, an FLASH memory and an SD card which are all electrically connected with the MCU at the same time.

2. The hand-held intelligent electrical line parameter patrol device of claim 1, wherein: the wireless communication part is formed by connecting WiFi, NB-IoT and Bluetooth wireless network modules in parallel.

3. The hand-held intelligent electrical line parameter patrol device of claim 1, wherein: the electric line parameter acquisition part comprises a single chip microcomputer electrically connected with the MCU, an electric line voltage parameter acquisition circuit, an electric line impedance detection circuit, an electric line ground fault current leakage protector disconnection time acquisition circuit and a plug part, wherein the electric line voltage parameter acquisition circuit, the electric line impedance detection circuit and the electric line ground fault current leakage protector disconnection time acquisition circuit are electrically connected with the single chip microcomputer, and the plug part is electrically connected with the electric line voltage parameter acquisition circuit.

4. The hand-held intelligent electrical line parameter patrol device of claim 3, wherein: the 220V voltage collected by the electric line voltage parameter collecting circuit through the plug part JP1 is subjected to halving voltage division through 6 300K omega resistors with power of 0.5W, secondary voltage reduction distribution is performed through 3 resistors with 100K and 3 resistors with 1K after voltage division, and voltage values LN, NE and LE distributed by secondary voltage reduction can be directly collected by the single chip microcomputer.

5. The hand-held intelligent electrical line parameter patrol device of claim 3, wherein: the electric line impedance detection circuit controls the on-off of a 10 omega/8W power resistor by controlling the on-off of the thyristor Q1 through the single chip microcomputer so as to detect the line impedance.

6. The hand-held intelligent electrical line parameter patrol device of claim 3, wherein: the electric line earth fault current leakage protector is formed by connecting an RCD (resistor capacitor diode) disconnection time acquisition circuit and a GFCI (ground fault current leakage) disconnection time acquisition circuit in parallel so as to detect the RCD disconnection time and the GFCI disconnection time; the GFCI off-time acquisition circuit is characterized in that a PIC single chip microcomputer controls the on-off of a thyristor Q2 to realize that a resistor of 44K omega is connected in parallel with a 106 capacitor and then connected between a live wire and a ground wire in series, and 5mA current is applied between the live wire and the ground wire; the RCD off-time acquisition circuit is a PIC singlechip, and a resistor of 7.3K omega is connected in parallel with a 106 capacitor and then connected between a live wire and a ground wire in series by controlling the on-off of a thyristor Q3, and a current of 30mA is added between the live wire and the ground wire.

7. The utility model provides an intelligence electric line parameter inspection system which characterized in that: the system comprises a building electrical fire hazard patrol system positioned on an upper computer, a position information module and the handheld intelligent electrical line parameter patrol device as claimed in any one of claims 1 to 3;

the electric line patrol device is connected with the building electric fire hidden danger patrol system through a wireless network, and transmits the measured electric line parameters to the building electric fire hidden danger patrol system in real time; the position information module is fixedly arranged at a position near a power socket of the electric circuit uniquely corresponding to the position information module.

8. The intelligent electrical line parameter patrol system of claim 7, wherein: the position information module is a Bluetooth label, and the Bluetooth label is fixed at a position near the power socket which is only corresponding to the Bluetooth label.

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