CN-224218469-U - Charging signal testing tool

Abstract

The utility model provides a charging signal testing tool, which structurally comprises a shell, a rechargeable lithium battery, an intelligent control main board, a liquid crystal display module and an indicator lamp, wherein a display screen of the liquid crystal display module is arranged on the surface of the shell, the indicator lamp is arranged on the surface of the shell, the rechargeable lithium battery and the intelligent control main board are arranged inside the shell, an MCU on the intelligent control main board on a signal detection tool triggers a communication unit (a communication module, a SIM card and an antenna) to power on and start up, data are returned to the MCU after network searching detection and displayed on the liquid crystal screen, and network searching signal detection can be completed manually and immediately by simulating the real signal receiving condition of an NB (network of things) film table without connecting with external equipment and displayed on the liquid crystal screen. The tool is portable, can accurately measure the signal intensity of a local environment, and is quick in response time and accurate in test.

Inventors

• CHEN SHIFENG

Assignees

• 泰山燃气集团有限公司

Dates

Publication Date

20260508

Application Date

20250417

Claims (7)

1. 1. The charging signal testing tool is characterized by comprising a shell (1), a rechargeable lithium battery, an intelligent control main board, a liquid crystal display module and an indicator lamp (3), wherein a display screen (2) of the liquid crystal display module is arranged on the surface of the shell (1), the indicator lamp (3) is arranged on the surface of the shell (1) and below the display screen (2), the rechargeable lithium battery and the intelligent control main board are arranged inside the shell (1), the intelligent control main board comprises an NB communication circuit, an MCU singlechip and a Bluetooth module and a voltage conversion module, the NB communication circuit comprises an NB Internet of things communication module, an SIM card and an antenna (4), the rechargeable lithium battery is respectively connected with the MCU singlechip, the NB Internet of things communication module, the SIM card, the Bluetooth module and the liquid crystal display module to supply power to the rechargeable lithium battery, and when the intelligent control main board is operated, the MCU singlechip triggers the NB communication circuit to power on and performs network searching detection, and then transmits detection data back to the MCU singlechip and displays the detection data on the display screen (2) of the liquid crystal display module.
2. 2. The charging signal testing tool of claim 1, wherein the NB communication circuit is a BC26 communication chip.
3. 3. The charging signal testing tool of claim 1, wherein the MCU singlechip is a GD32E230C8T6 chip.
4. 4. The charging signal testing tool of claim 1, wherein the voltage conversion module converts the voltage of the rechargeable lithium battery into 3.3V voltage by adopting an SGM2019-3.3V voltage stabilizing chip for use by an MCU singlechip, an NB (electronic component) Internet of things communication module, an SIM (subscriber identity Module), a Bluetooth module and a liquid crystal display module.
5. 5. The charging signal testing tool of claim 1, wherein the Bluetooth module is a BF10-A chip.
6. 6. The charging signal testing tool according to any one of claims 1 to 5, wherein the intelligent control main board further comprises a charging module.
7. 7. The charging signal testing tool of claim 6, wherein the SIM card comprises a telecom card, a mobile card and a Unicom card.

Description

Charging signal testing tool Technical Field The utility model relates to the technical field of signal testing, and particularly provides a charging signal testing tool. Background The remote meter reading system collects and meters the gas consumption through a remote gas meter. When data are collected, the collector collects gas data through a gauge head collector, an RS485 bus and an MBUS bus in the remote transmission gauge, processes and stores the data, and then the collector uploads the data to the concentrator through the wireless data transmission module. The main function of the concentrator is to collect the data uploaded by each collector and then upload the data to the monitoring center of the meter reading system through GPRS and CDMA. When the meter reading is needed, the computer of the monitoring center sends out the acquisition command, and the acquisition command is forwarded to all the collectors after the collectors receive the command. After receiving the acquisition command, the gauge head acquisition board judges whether the command is a command sent to the terminal, and sends the data stored on the gauge head acquisition board back to the monitoring center to realize remote meter reading. The signal intensity is tested by the mobile phone, only a simple strength indication can be obtained, and the existing testing instrument has a complex structure and is high in price. Disclosure of utility model The signal testing tool transmits telecommunication/mobile signals through the tool, the signals are connected with a mobile/telecommunication operator network through a telecommunication/mobile NB-IOT base station, and the signal conditions can be analyzed according to RSRP values, SNR values and ECL values returned by the operator network in the process of connecting the tool with the network. RSRP (signal receiving power) is negative, the range of the value is-44 to-140 dBm, and the larger the value is, the better the value is. SNR (signal to noise ratio) is that both positive and negative values are larger and better. ECL (overlay registration): typically takes the value 0 (regular overlay), 1 (extended overlay), 2 (extreme overlay). The NB signal is preferably at least-90 RSRP, at least 10 SNR, and at least 0 ECL, based on test experience. The utility model aims to solve the problems and provides a charging signal testing tool. The utility model provides a charging signal test fixture, the structure of frock includes the shell, chargeable lithium cell, intelligent control mainboard, liquid crystal display module, pilot lamp; The display screen of the liquid crystal display module is arranged on the surface of the shell, the indicator lamp is arranged on the surface of the shell 1, and the display screen is arranged below the display screen; The rechargeable lithium battery and the intelligent control main board are arranged inside the shell. The intelligent control main board is provided with an NB communication circuit, an MCU singlechip, a Bluetooth module and a voltage conversion module; The NB communication circuit comprises an NB Internet of things communication module, an SIM card and an antenna 4; the rechargeable lithium battery is respectively connected with the MCU singlechip, the NB internet of things communication module, the SIM card, the Bluetooth module and the liquid crystal display module through the voltage conversion module to supply power to the rechargeable lithium battery. Further, the NB communication circuit employs a BC26 communication chip. Furthermore, the MCU singlechip adopts a GD32E230C8T6 chip. Furthermore, the voltage conversion module adopts an SGM2019-3.3V voltage stabilizing chip to convert the voltage of the rechargeable lithium battery into 3.3V voltage for the MCU singlechip, the NB internet of things communication module, the SIM card, the Bluetooth module and the liquid crystal display module. Furthermore, the Bluetooth module is a BF10-A chip. The BF10-A chip is mainly used in the field of short-distance data wireless transmission, can be conveniently connected with Bluetooth equipment of a personal computer (PDA mobile phone), and can also realize data intercommunication between two modules, thereby avoiding complicated cable connection. Furthermore, the intelligent control main board further comprises a charging module. The SIM card comprises a telecom card, a mobile card and a Unicom card. Compared with the prior art, the charging signal testing tool has the following outstanding beneficial effects: The utility model triggers the communication unit (communication module, SIM card, antenna) to power on and start up through MCU on the intelligent control board on the signal detection tool, and transmits the data back to MCU to display on the liquid crystal screen after network searching detection. The tool is portable, can accurately measure the signal intensity of a local environment, and is quick in response time and accurate in test. Drawi