CN204989367U - Low pressure user transmission line detecting system that visits one house after another - Google Patents

Abstract

The utility model discloses a low pressure user transmission line detecting system that visits one house after another, including the host computer with from the machine, host installation input check signal in total transmission line department and to the transmission line in room will wait from the machine that the room sign signal transmission who detects gives the host computer, and in the time of when install the transmission line who is waiting to detect the room from the machine on, the detected signal that the host computer detected corresponding transmission line changes, and whether the host computer corresponds to determine with room sign signal according to here transmission line's sign signal is visited one house after another. The utility model discloses a system has easy and simple to handle, the quick accurate advantage of measuring.

Description

Low-voltage user transmission line cross-connection detection system

technical field

The utility model mainly relates to the field of electric power technology, in particular to a low-voltage user transmission line cross-connection detection system.

Background technique

The phenomenon of cross-connection of low-voltage users is caused by the dislocation of the relationship between actual electricity consumption and metering. This problem is particularly prominent for the current large-scale low-voltage centralized copying operations. Since this problem is highly concealed and difficult to detect, it has brought great troubles, hidden dangers and troubles to users and power supply companies for a long time. Once such problems are exposed, it will seriously damage the service image of power supply companies and cause comparative The serious social impact will also bring endless troubles to the follow-up battery recovery problem.

Utility model content

The technical problem to be solved by the utility model is that: aiming at the technical problems existing in the prior art, the utility model provides a low-voltage user transmission line cross-connection detection system with simple structure, easy operation and accurate detection.

In order to solve the problems of the technologies described above, the technical solution proposed by the utility model is:

A low-voltage user transmission line serial detection system, including a host and a slave, the host is installed at the main transmission line of the low-voltage user and inputs detection signals to the transmission lines of more than one room, and the slave is preset to be detected The room identification signal of the low-voltage user and send this room identification signal to the host, when the slave is installed on the transmission line of the low-voltage user room to be detected, the host detects the change of the detection signal of the corresponding transmission line, so The master judges whether the transmission line of the low-voltage user is connected or not according to whether the identification signal of the transmission line whose detection signal changes corresponds to the room identification signal sent by the slave.

As a further improvement of the above technical solution:

The power transmission line of each room includes a neutral line and a live line, and the detection signal is input to the live line of the power transmission line of each room. Whether the neutral wire is reversed; when the slave detects that the live wire in the corresponding room has a detection signal, it will judge that the live wire and the neutral wire of the power transmission line in this room are not reversed; if it detects that the neutral wire in the corresponding room has a detection signal, then judge The live wire and the neutral wire of the power transmission line in this room are reversely connected.

The detection signal is a high level signal.

The host computer and the slave computer are connected by wireless communication.

The host includes a first control unit, a first display unit, and a first input and output unit, the first display unit and the first input and output unit are both connected to the first control unit, and the first input and output unit is connected to the first input and output unit The power transmission lines of more than one room are connected, and the first control unit displays the identification signals and detection signal states corresponding to the power transmission lines of each room through the first display unit.

The first input and output unit of the host includes 24 I/O ports, the host is connected to the transmission lines of 12 groups of rooms, and the live wire or neutral line of the transmission lines of each group of rooms is connected to one I/O port.

The slave includes a second control unit, a second input and output unit, a wireless communication unit and a second display unit, the second input and output unit and the second display unit are connected to the second control unit, and the second After the input and output unit inputs the room identification signal of the room to be detected to the second control unit, the signal is sent to the host through the wireless communication unit and displayed on the second display unit at the same time.

The slave machine includes a test connector for connecting to a power transmission line, and the test connector is a terminal clip or a power plug.

Compared with the prior art, the utility model has the advantages of:

In the low-voltage user transmission line serial household detection system of the utility model, the detection signal is input to the transmission lines of each room through the host computer at the main transmission line, and the slave machine is installed on the transmission line in the room to be detected and the room of the room to be detected The identification signal is sent to the host. At this time, the host will detect the change of the detection signal of the corresponding transmission line, and then compare the identification signal of the transmission line with the room identification signal. If the identification signals of the two do not correspond, the room will be judged The transmission line is connected to each other, the detection system is simple in structure, easy to operate and easy to implement. In addition, through the level signal of the live line and the neutral line in the transmission line from the slave machine, it can be judged whether the neutral line and the live line in the transmission line are connected in reverse, and the operation is simple.

Description of drawings

Fig. 1 is a schematic diagram of the system block structure of the present invention.

Fig. 2 is a schematic diagram of the block structure of the main engine in the utility model.

Fig. 3 is a block diagram of the slave machine in the present invention.

Fig. 4 is the schematic diagram of wiring of the main engine in the utility model when there is an electric energy meter.

Fig. 5 is a schematic diagram of the wiring of the main engine in the utility model when there is no electric energy meter.

Fig. 6 is the work flowchart of main engine in the utility model.

Fig. 7 is the working flowchart of the slave machine in the utility model.

The symbols in the figure indicate: 1. Host; 11. First control unit; 12. First input and output unit; 13. First display unit; 14. First wireless communication unit; 2. Slave; 21. Second control unit ; 22, the second input and output unit; 23, the second display unit; 24, the second wireless communication unit; 3, the electric energy meter; 4, the air switch.

detailed description

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments of the description.

As shown in Figures 1 to 7, the low-voltage user transmission line serial household detection system of this embodiment is mainly applicable to line inspection and acceptance under the condition of no electricity but can enter the household, wherein the detection system includes a master 1 and a slave 2 , the wireless connection between the master 1 and the slave 2, the master 1 is installed at the main power transmission line of the low-voltage user and inputs the detection signal to the power transmission line of more than one room, and the room identification signal of the low-voltage user to be detected is preset in the slave 2 And send this room identification signal to the host 1, when the slave 2 is installed on the transmission line of the low-voltage user room to be detected, the host 1 detects the change of the detection signal of the corresponding transmission line, and the transmission line where the detection signal of the host 1 changes Whether the identification signal of the user corresponds to the room identification signal sent from the slave 2 is used to judge whether the transmission line of the low-voltage user is connected; if the two signals do not correspond, it can be judged that the transmission line of the room is connected. It can be judged that the power transmission line in this room is normal. The detection system of the utility model has the advantages of simple structure, convenient operation and easy realization.

In this embodiment, the power transmission line in each room includes a neutral line and a live line. In order to further judge whether the live line and the neutral line in the power transmission line are reversed in the case of no cross-connection, the detection signal is input to each room. On the live wire of the line, the slave 2 judges whether the live wire and the neutral wire are reversed according to whether the live wire or the neutral wire of the corresponding room detects a detection signal; when the slave 2 detects that the live wire in the corresponding room has a detection signal, it judges The live wire and neutral wire of the power transmission line in this room are not reversely connected; if a detection signal is detected for the neutral wire in the corresponding room, it is judged that the live wire and neutral wire of the power transmission line in this room are reversely connected. In this embodiment, the detection signal is a high-level signal; of course, a high-level signal can also be input into the neutral line of the transmission line to detect whether there is a high-level signal on the corresponding neutral line to determine whether the neutral line is reversed.

As shown in Figure 2, in this embodiment, the host 1 includes a first control unit 11 (single-chip microcomputer or PLC), a first display unit 13, and a first input and output unit 12 (including an input unit and an output unit), the first display unit 13 and the first input and output unit 12 are connected to the first control unit 11, and the first input and output unit 12 is connected to the power transmission line of more than one room, and the first control unit 11 sends the identification signal and detection signal corresponding to the power transmission line of each room The state is displayed by the first display unit 13; wherein the first input and output unit 12 mainly inputs detection signals and corresponding monitoring for each transmission line, and the master 1 also includes a first wireless communication device for wireless communication with the slave 2 Unit 14, and the first interface unit (keyboard interface and host computer interface RS-232) connected to other devices, wherein the power supply unit of the host computer 1 is a lithium battery.

In this embodiment, the first input and output unit 12 of the host 1 includes 24 I/O ports, the host 1 is connected to the power transmission lines of 12 groups of rooms, and the live wire or neutral line of the power transmission lines of each group of rooms is connected to one I/O Port; can connect 12 transmission lines at the same time, thus greatly improving work efficiency.

As shown in Figure 3, in this embodiment, the slave 2 includes a first control unit 11, a first input and output unit 12, a second wireless communication unit 24 and a second display unit 23, the second input and output unit 22 and the second The display unit 23 is connected to the second control unit 21. After the second input and output unit 22 inputs the room identification signal of the room to be detected to the second control unit 21, it is sent to the host computer 1 through the second wireless communication unit 24 and simultaneously passed through the second display. Unit 23 displays. The slave 2 includes a test connector for connecting to the power transmission line. The test connector is a clamp or a power plug, which is convenient for connecting to a switch or socket in the room. By installing in the transmission line in the room, the access signal is transmitted to the host 1 through the transmission line accordingly. In addition, the slave 2 monitors the level of the live wire or the neutral wire to determine whether the neutral and live wires are reversed. Machine 2 also includes an interface unit (keyboard interface) and a power supply unit (lithium battery).

In this embodiment, the wiring mode of the host 1 is shown in Figure 6 and Figure 7, wherein there is an electric energy meter 3 in Figure 6, then the first input and output unit 12 of the host 1 is connected to the air switch 4 at the input end of the electric energy meter 3 If there is no electric energy meter 3, the first input and output unit 12 of the host computer 1 is connected to the corresponding output terminal of the electric energy meter 3.

The detection method of the low-voltage user transmission line serial household detection system of the utility model comprises the following steps:

S1: Host 1 inputs detection signals from the main power transmission line of low-voltage users to the power transmission lines of each room;

S2: The slave 2 is installed at the transmission line of the low-voltage user room to be detected and sends the room identification signal of the low-voltage user to be detected to the host 1;

S3: The host 1 detects that the detection signal of the corresponding transmission line has changed, and compares the identification signal of the transmission line with the room identification signal sent by the slave 2. When the identification signal of the transmission line does not correspond to the room identification signal , it is judged that the transmission line of the low-voltage user is connected to the user;

S4: Repeat step S2 and step S3 to detect whether the transmission lines of other low-voltage users are cross-connected.

The specific working process is as follows: Host 1 sets parameters after starting up, and the parameters include: test date and time, community name, building number, account number and other related information;

The main unit 1 is installed at the measuring box of the electric energy meter 3, and the test lines are respectively connected to the wiring of the electric energy meter 3 or under the user air switch according to the red and black lines, among which the red line is connected to the live line, and the black line is connected to the neutral line, and the wiring is carried out in the order of the labels;

Host 1 enters the test interface, press the "test button" to start the test: after the test starts, host 1 monitors the level changes of the 24 channels connected in real time, and waits for the slave 2 to connect;

When the host 1 detects that the signal changes from high to low (indicating that the slave 2 has been connected), the host 1 communicates wirelessly with the second communication unit of the slave 2 through the first wireless communication unit 14, and the slave 2 will detect the room The room identification signal (such as the room number) is sent to the host 1;

Based on the identification signal of the transmission line where the level is pulled low, and the room number of the room sent by the slave 2, the host 1 establishes a line checking relationship, and displays the room number corresponding to this channel and whether the zero and live wire connections are correct; After the information is displayed correctly, save it;

After starting up the slave machine 2, set the room number to be tested, and select the appropriate test connector according to the wiring conditions in the room;

After slave 2 and master 1 are connected, the screen should display the wiring information of zero and live wires. If no wiring information is displayed, it means that the power socket is not connected to the incoming power line. Change the socket and re-test;

After master 1 completes the detection of one line of wiring, slave 2 will display the test status of master 1 after receiving the test result, and return information such as the room number and the state of the zero live wire;

Carry out the test in the next room, the test method is the same as above, after the test of all the transmission lines is completed, the host 1 saves the test data, and the serial household inspection is completed.

The above are only preferred implementations of the utility model, and the scope of protection of the utility model is not limited to the above-mentioned embodiments, and all technical solutions under the thinking of the utility model all belong to the scope of protection of the utility model. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims (8)

1. a low-voltage customer transmission line of electricity is visited one house after another detection system, it is characterized in that, comprise main frame (1) and from machine (2), described main frame (1) is installed on low-voltage customer total transmit power circuit place and inputs detection signal in the transmission line of electricity in more than one room, describedly in machine (2), be preset with the room identification signal of low-voltage customer to be detected and this room identification signal is sent to main frame (1), when described be arranged on the transmission line of electricity in low-voltage customer room to be detected from machine (2) time, described main frame (1) detects the change in detection signal of corresponding transmission line of electricity, with whether the described room identification signal sent from machine (2) is corresponding, the id signal of the transmission line of electricity that described main frame (1) changes according to detection signal judges whether the transmission line of electricity of this low-voltage customer visits one house after another.

2. low-voltage customer transmission line of electricity according to claim 1 is visited one house after another detection system, it is characterized in that, the transmission line of electricity in each room comprises zero line and live wire, described detection signal inputs on the live wire of each room transmission line of electricity, describedly whether detects that detection signal judges the whether reversal connection of live wire and zero line from machine (2) according to the live wire of corresponding room transmission line of electricity or zero line; When detecting that the live wire in corresponding room has detection signal from machine (2), then judge live wire and the non-reversal connection of zero line of this room transmission line of electricity; If detect that the zero line in corresponding room has detection signal, then judge live wire and the zero line reversal connection of this room transmission line of electricity.

3. low-voltage customer transmission line of electricity according to claim 2 is visited one house after another detection system, and it is characterized in that, described detection signal is high level signal.

4. low-voltage customer transmission line of electricity according to claim 2 is visited one house after another detection system, and it is characterized in that, described main frame (1) is connected with wireless telecommunications between machine (2).

5. the low-voltage customer transmission line of electricity according to Claims 2 or 3 or 4 is visited one house after another detection system, it is characterized in that, described main frame (1) comprises the first control module (11), first display unit (13) and the first input-output unit (12), described first display unit (13) and the first input-output unit (12) are all connected with described first control module (11), described first input-output unit (12) is connected with the transmission line of electricity in more than one room, id signal corresponding for the transmission line of electricity in each room and detection signal state are shown by the first display unit (13) by described first control module (11).

6. low-voltage customer transmission line of electricity according to claim 5 is visited one house after another detection system, it is characterized in that, first input-output unit (12) of described main frame (1) comprises 24 road I/O mouths, described main frame (1) connects the transmission line of electricity in 12 groups of rooms, and often organizes the live wire of the transmission line of electricity in room or zero line all connects a road I/O mouth.

7. low-voltage customer transmission line of electricity according to claim 6 is visited one house after another detection system, it is characterized in that, describedly comprise the second control module (21) from machine (2), second input-output unit (22), radio communication unit and the second display unit (23), described second input-output unit (22) is connected with described second control module (21) with the second display unit (23), after described second input-output unit (22) inputs room identification signal to the second control module (21) in room to be detected, send to main frame (1) through radio communication unit and shown by the second display unit (23) simultaneously.

8. low-voltage customer transmission line of electricity according to claim 7 is visited one house after another detection system, it is characterized in that, describedly comprises test splice for accessing transmission line of electricity from machine (2), and described test splice is binding clip or attaching plug.