Anti-forcible-entry alarm lead seal for gas meter

Abstract

The utility model discloses an anti-forcible entry alarm lead seal for a gas meter, which comprises a shell, a communication host and a Bluetooth detection slave, Bluetooth communication is adopted between the Bluetooth detection slave and the communication host, the Bluetooth detection slave is arranged in the shell, a battery, a mainboard and a sealing line are arranged in the Bluetooth detection slave, a circuit board is arranged in the shell, and the Bluetooth detection slave is arranged in the shell. The circuit board is provided with a take-up one-way snap ring pole piece, the sealing wire can be inserted into the take-up one-way snap ring pole piece, a metal spine of the one-way snap ring pole piece can be clamped on the sealing wire, and the circuit board is provided with a sampling resistor sealing strip which extends out through the wire outlet snap ring and is fixed on the circuit board. The utility model relates to the technical field of burglary prevention and forcible entry prevention of commercial gas meters in the urban gas industry. The device is compact in structure, small and exquisite in equipment, high in anti-theft performance, non-duplicated and non-repairable, capable of recording the gas stealing time, capable of providing a basis for gas stealing tracing, capable of reporting actively, capable of reducing the patrol frequency of an administrator and capable of saving labor cost.

Description

Technical Field

[0001] This utility model relates to the field of anti-theft and anti-tampering technology for urban gas, industrial and commercial gas meters, specifically an anti-tampering alarm lead seal for gas meters. Background Technology

[0002] One common method of gas theft among industrial and commercial gas users is tampering with gas meter parameters and damaging the meter's counting structure. This method requires manually opening the gas meter and breaking the original lead seal. Traditional lead seals, made of metal, offer poor anti-theft protection, requiring regular inspections by management personnel to detect theft. Furthermore, traditional metal lead seals lack anti-copying features, allowing thieves to easily forge them and evade detection. Another method, RFID lead seals, is an upgrade from traditional seals, adding anti-copying capabilities. While this can prevent thieves from copying the seals to some extent, it still requires inspection personnel to use specialized tools to detect the theft during routine checks and cannot pinpoint the exact date of the theft. Therefore, a new type of electronic lead seal is needed that effectively prevents thieves from copying seal information, records the date of meter tampering and theft, and proactively reports the theft to management personnel without requiring on-site inspections. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a tamper-proof alarm lead seal for gas meters, solving the problems of preventing gas company losses due to gas theft, monitoring illegal activities, and reducing public safety risks. It also provides technical support for gas inspections and facilitates the pursuit of compensation.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: it includes a housing, a communication host, and a Bluetooth detection slave unit. The Bluetooth slave unit and the host unit communicate via Bluetooth. The Bluetooth slave unit is housed inside the housing. The Bluetooth slave unit contains a battery, a motherboard, and a sealing wire. A circuit board is installed inside the housing. A take-up unidirectional retaining ring electrode is installed on the circuit board. The sealing wire can be inserted into the take-up unidirectional retaining ring electrode. The metal spikes of the unidirectional retaining ring electrode can be locked onto the sealing wire. A sampling resistor sealing strip is provided on the circuit board, extending through the outgoing retaining ring and fixed on the circuit board.

[0005] Preferably, the sealing wire is made of conductive plastic (graphite fiber) with an insulating outer layer.

[0006] Preferably, the sampling resistor seal is made of conductive plastic and is wrapped with an insulating sheath.

[0007] Preferably, the outer shell is made of ABS engineering plastic.

[0008] Preferably, the circuit board is provided with a battery that is directly connected via a battery holder.

[0009] This utility model provides a tamper-proof alarm lead seal for gas meters. It offers the following advantages: compact structure, small size, strong anti-theft capability, non-replicable and non-repairable, records the time of gas theft and provides evidence for tracing gas theft, proactively reports incidents, reduces the frequency of administrator inspections, and saves labor costs. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the tamper-proof alarm lead seal for a gas meter according to the present invention.

[0011] Figure 2 This is a side view of the tamper-proof alarm lead seal for a gas meter according to the present invention.

[0012] Figure 3 This is a structural diagram of the sealing wire insertion and exit ring of the anti-tampering alarm lead seal for a gas meter according to the present invention.

[0013] Figure 4 This is a schematic diagram of the connection of the tamper-proof alarm lead seal for a gas meter according to the present invention.

[0014] In the diagram: 1-Outer casing; 2-Take-up unidirectional retaining ring electrode; 3-Circuit board; 4-Outgoing retaining ring; 5-Resistor seal; 6-Battery. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a tamper-proof alarm lead seal for a gas meter, including a housing 1, a communication host and a Bluetooth detection slave unit. The Bluetooth slave unit and the host unit communicate via Bluetooth. The Bluetooth slave unit is housed inside the housing 1 and contains a battery, a main board, and a sealing wire. A circuit board is installed inside the housing 1. A one-way wire-retracting retaining ring electrode 2 is installed on the circuit board 3. The sealing wire can be inserted into the one-way wire-retracting retaining ring electrode 2. The metal spikes of the one-way retaining ring electrode 2 can be stuck on the sealing wire. A sampling resistor seal 5 is provided on the circuit board 3, which extends through the wire-exiting retaining ring 4 and is fixed on the circuit board 3.

[0017] As a preferred technical solution, the sealing wire is made of conductive plastic graphite fiber and the outer side is an insulating sheath.

[0018] As a preferred technical solution, the sampling resistor seal 5 is made of conductive plastic inside and wrapped with an insulating sheath on the outside.

[0019] As a preferred technical solution, the outer shell 1 is made of ABS engineering plastic.

[0020] As a preferred technical solution, the circuit board 3 is further provided with a battery 6 that is directly connected via a battery holder;

[0021] It should be noted that: This device has an external alarm data management backend, and its own casing has an anti-tamper alarm. The alarm content includes: cover opening alarm, low battery alarm, and on-site maintenance and repair reporting via QR code scanning. The communication host itself reports the status of the host and its matching lead seal to the alarm data management backend once a day. The host has a built-in 20,000 mAh battery with a lifespan of ≥1 year. It supports 4G transmission. The antenna is extendable. The host and slave devices use Bluetooth to transmit encrypted information.

[0022] Bluetooth detection slave unit – Electronic seal (wireless) multi-point monitoring

[0023] Bluetooth slave and master devices communicate using encrypted Bluetooth technology.

[0024] The communication method is many-to-one, with one master unit corresponding to multiple slave units, and the slave units do not communicate with each other.

[0025] Bluetooth slave unit internal components: Includes battery, motherboard, sealing wire (sampling resistor wire), outgoing unidirectional retaining ring electrode (soldered to the circuit board), and retracting unidirectional retaining ring electrode (soldered to the circuit board). Service life ≥ 1 year.

[0026] The outer casing 1 is made of ABS engineering plastic. The internal material of the sampling resistance wire is conductive plastic, with stable resistivity that does not change with ambient temperature and humidity. The outer sheath of the sealing wire is wrapped with an insulating sheath. When in use, the electronic lead seal wire can be inserted into the one-way retaining ring electrode 2. The metal spikes of the one-way retaining ring electrode 2 can be locked onto the sealing wire, so it can only move forward in one direction and the sealing wire cannot move backward. At the same time, the one-way retaining ring electrode 2 penetrates into the conductive area of ​​the resistance wire and makes contact. After contact, the main board records the resistance value of the sampling resistor (the retaining ring has pins directly soldered to the circuit board) and encrypts the resistance value signal and uploads it to the monitoring host. The host saves the data. When the lead seal finds that the previously saved resistance value is inconsistent with the recorded value, and the error is greater than the threshold, the alarm program is activated.

[0027] The sampling resistor is sealed with a conductive plastic (graphite fiber) interior and an insulating outer layer.

[0028] Battery 6 is directly connected to the circuit board via a battery holder. Circuit board 3 is fixed in the inner shell, and the sampling resistor seal passes through the outgoing wire retaining ring 4 and is fixed to circuit board 3.

[0029] When in use, the electronic lead seal wire can be inserted into the one-way retaining ring electrode 2. The metal spikes of the one-way retaining ring electrode 2 can lock onto the seal wire, thus allowing it to move forward in only one direction; the seal wire cannot retract. Simultaneously, the retaining ring electrode penetrates and contacts the conductive area of ​​the resistance wire. After contact, the main board records (the retaining ring has pins directly soldered onto the circuit board) the resistance value of the sampling resistor.

[0030] The cable tie storage slot has a one-way buckle. When the cable tie is put into the storage slot, the one-way buckle locks the cable tie in place to prevent it from moving outward.

[0031] The above structure can quickly complete on-site lead sealing operations, reduce the workload of staff, and improve work efficiency.

[0032] When external damage occurs and the outer sealing line of the Bluetooth lead seal is broken, the internal communication line is interrupted. The lead seal records the disconnection and simultaneously sends an alarm to the host, indicating that the lead seal sealing line has been removed. After receiving the alarm signal, the alarm host encrypts and transmits it to the anti-theft device cloud platform.

[0033] It should be noted that the internal principles and connections are as follows:

[0034] Principle: According to Ohm's law, there is a linear relationship between resistance R and voltage V. When the resistance changes, the voltage across the circuit also changes. Therefore, this physical property is used to develop conductive plastic seals. The resistance value of the seal is evenly distributed, and the resistance value changes significantly when measured at different length positions. Therefore, this seal is used to design the resistive electronic lead seal described in this patent.

[0035] The head of the resistor seal is fixed inside the lead seal, and the retaining ring is soldered to the control circuit board via the "outgoing wire retaining ring connection".

[0036] When using, insert the seal into the "retractable ring";

[0037] The conductive plastic seal and two retaining rings, "outgoing wire retaining ring" and "return wire retaining ring," form a closed loop. According to Ohm's law, the seal between the retaining rings acts as a sampling resistor, similar to a sliding rheostat. Changes in resistance indicate the seal's state. For example, if someone cuts the seal, the loop is broken. If the circuit signal indicates a break, it can be inferred that the seal has been cut. If someone pulls the seal, changing the length of the conductive plastic between the two retaining rings, the resistance of the conductive plastic will change. Therefore, if the circuit measurement shows a change in the seal's resistance, it can be determined that the seal has been damaged. When the seal is suspected of being damaged, the seal and the main unit lose connection.

[0038] When the internal battery of the Bluetooth seal slave device is de-energized, if the alarm host fails to communicate with the slave device four times within 24 hours, it will report that the Bluetooth seal is disconnected or de-energized, and the alarm backend will prompt the administrator to check and verify.

[0039] Bluetooth alarm seal lost connection, same situation as power failure alarm.

[0040] Internal working principle:

[0041] The alarm host and the Bluetooth seal use the 2.4G near-field communication band for communication. The communication content is encrypted. When the communication link is stable, the devices work normally, and the host and slave devices call and respond at certain time intervals.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tamper-proof alarm lead seal for a gas meter, comprising a housing (1), a communication host, and a Bluetooth detection slave, characterized in that, The Bluetooth slave and the master communicate via Bluetooth. The Bluetooth slave is housed inside the housing (1). The Bluetooth slave contains a battery, a motherboard, and a sealing wire. A circuit board is installed inside the housing (1). A take-up one-way retaining ring electrode (2) is installed on the circuit board (3). The sealing wire can be inserted into the take-up one-way retaining ring electrode (2). The metal spikes of the one-way retaining ring electrode (2) can be stuck on the sealing wire. A sampling resistor seal (5) is provided on the circuit board (3) and extends out through the outgoing retaining ring (4) and is fixed on the circuit board (3).

2. The tamper-proof alarm lead seal for gas meters according to claim 1, characterized in that, The sealing wire is made of conductive plastic with an insulating outer layer.

3. The tamper-proof alarm lead seal for gas meters according to claim 1, characterized in that, The sampling resistor seal (5) is made of conductive plastic inside and is wrapped with an insulating sheath on the outside.

4. The tamper-proof alarm lead seal for gas meters according to claim 1, characterized in that, The outer shell (1) is made of ABS engineering plastic.

5. The tamper-proof alarm lead seal for gas meters according to claim 1, characterized in that, The circuit board (3) is provided with a battery (6) that is directly connected to the battery holder.

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