CN110542776A

CN110542776A - Multifunctional cable testing tool instrument

Info

Publication number: CN110542776A
Application number: CN201910871785.2A
Authority: CN
Inventors: 林烨
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2019-12-06

Abstract

The invention provides a multifunctional cable testing tool instrument which comprises a host and a receiver in signal connection with the host, wherein the host comprises an MCU module, a first power module, a display module, a key control module, a line searching signal transmitting module, a line testing module, a switch port flicker testing module and a POE testing module which are respectively connected with the MCU module, the receiver comprises a second power module, an analog signal receiving module, a digital-analog signal self-adaptive switching module, a sound production module and a far-end line testing module, the second power module is respectively and electrically connected with the analog signal receiving module, the digital-analog signal self-adaptive switching module and the sound production module, and the line testing module is connected with the far-end line testing module. The instrument has the function of hunting, has POE test, switch port scintillation test function, is applicable to the cable of different grade type and uses.

Description

Multifunctional cable testing tool instrument

Technical Field

The invention relates to a multifunctional cable testing tool instrument.

Background

In a complex wiring environment in the field of wiring engineering, a wiring system involving a network camera is particularly complex. The distance is far away between the camera, and the camera is more, and the performance of POE power supply also need carry out concrete test in order to adapt to the demand of camera during the debugging. The test that relates to POE on the current market is less to the test is comparatively complicated, operates inconveniently, detects the function singleness, makes later stage cable maintenance, later stage control security protection maintain inconveniently.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a multifunctional cable testing tool instrument which has a line searching function, has POE (power over Ethernet) testing and switch port flicker testing functions, and is suitable for cables of different types.

The invention is realized in such a way, a multifunctional cable testing tool instrument comprises a host and a receiver in signal connection with the host, wherein the host comprises an MCU module, and a first power module, a display module, a key control module, a hunting signal transmitting module, a line testing module, a switch port flicker testing module and a POE testing module which are respectively connected with the MCU module, the receiver comprises a second power module, an analog signal receiving module, a digital-analog signal self-adaptive switching module, a sound production module and a far-end line testing module, the second power module is respectively and electrically connected with the analog signal receiving module, the digital-analog signal self-adaptive switching module and the sound production module, the hunting signal transmitting module is respectively in signal connection with the analog signal receiving module, the digital signal receiving module and the digital-analog signal self-adaptive switching module, the wire measuring module is connected with the far-end wire measuring module.

Preferably, the POE testing module distinguishes a standard POE power supply mode and a non-standard POE power supply mode by simulating a POE detection signature, and detects a port number and a voltage value corresponding to the live line.

Preferably, the hunting signal transmitting module transmits hunting signals for telephone lines and coaxial lines, or transmits hunting signals suitable for network lines and shielded lines, and the hunting signals are received by the digital-analog signal self-adaptive switching module.

Preferably, the sounding module is respectively connected with the analog signal receiving module, the digital-analog signal self-adaptive switching module and the far-end line measuring module.

Preferably, the data detected by the line measuring module and the far-end line measuring module are displayed in a digital form through the display module.

Preferably, the switch port flicker test module is connected with the switch and then realizes regular frequency flicker of the port of the switch in a mode of sending a data packet at a fixed frequency.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: the POE testing module can detect direct current in a line while detecting a line transmission data signal, and the switch port flicker testing module can realize a switch port flicker testing function and test the data communication capacity of the switch port; the hunting signal transmitting module is in butt joint with the analog signal receiving module, the digital signal receiving module and the digital-analog signal self-adaptive switching module, so that the hunting signal transmitting module has a hunting function, is suitable for testing different types of cables and can receive different types of signals.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a block diagram of the internal structure of a host computer of a multi-function cable test tool instrument according to an embodiment of the present invention;

FIG. 2 is a block diagram of the internal structure of a receiver of a multi-function cable test tool instrument according to an embodiment of the present invention;

Fig. 3 is a circuit diagram of a POE test module of the multifunctional cable test tool apparatus according to the embodiment of the present invention;

FIG. 4 is a circuit diagram of an MCU module of the multifunctional cable test tool instrument according to the embodiment of the present invention;

Fig. 5 is a circuit diagram of a switch port flicker test module and a POE test module of the multifunctional cable test tool apparatus according to the embodiment of the present invention;

FIG. 6 is a schematic diagram of a display module panel of a multifunctional cable test tool instrument according to an embodiment of the present invention.

Detailed Description

the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-2, a multi-functional cable testing tool instrument, including host computer and the receiver with host computer signal connection, the host computer includes MCU module 1 and the first power module 2 who is connected with MCU module 1 respectively, display module 3 (adopt liquid crystal display), button control module 4 (can provide control signal and be handled by the MCU module), hunting signal emission module 5, survey line module 6, switch port scintillation test module 7 and POE test module 8, the MCU module is little the control unit, also known as single chip microcomputer or singlechip. The hunting signal transmitting module 5 is composed of a signal oscillation sounder, a hunting device and a corresponding adapting line, and the working principle is as follows: the sound signal emitted by the signal searching oscillation sounder is accessed to the port of the target cable through the RJ45/RJ11 universal interface, a surrounding sound signal field is generated around the target cable loop, the signal field emitted by the signal searching oscillation sounder is quickly identified along the loop and at the tail end by a high-sensitivity induction type seeker, so that the cable of the item is found, and the emitted signal can be received by the analog signal receiving module 10, the digital signal receiving module 11 and the digital-analog signal self-adaptive switching module 12. The wire measuring module 6 and the far-end wire measuring module 14 adopt the existing wire measuring instrument, and the principle is that one end transmits signals and the other end feeds back signals, and if the sequences of two sides of the cable are different, the wire sequence is wrong. The switch port flash test module 7 can transmit a data packet to detect the state of the switch port. POE (power Over ethernet) test module 8, where POE refers to a technology that can provide dc power for some IP-based terminals (such as IP phones, wireless local area network access points AP, network cameras, etc.) while transmitting data signals for such devices, without any modification to the existing ethernet cat.5 wiring infrastructure. The POE technology can ensure the safety of the existing structured wiring and ensure the normal operation of the existing network, thereby reducing the cost to the maximum extent. The detected voltage is between 44 and 57V, and the typical value is 48V. The maximum current allowed is 550mA and the maximum starting current is 500 mA.

The receiver includes second power module 9, analog signal receiving module 10, digital signal receiving module 11, digital analog signal self-adaptation switch module 12, sound production module 13 and far-end survey line module 14, second power module 9 respectively with analog signal receiving module 10, digital signal receiving module 11, digital analog signal self-adaptation switch module 12 and 13 electric connection of sound production module, seek line signal emission module 5 respectively with analog signal receiving module 10, digital signal receiving module 11, digital analog signal self-adaptation switch module 12 through signal connection, survey line module 6 is connected with far-end survey line module 14. The analog signal receiving module 10 and the digital signal receiving module 11 are respectively used for receiving an analog signal and a digital signal; the digital-to-analog signal adaptive switching module 12 is a digital-to-analog converter, which is a device capable of converting a continuous analog signal into a discrete digital signal. The digital quantity processed by the digital system is sometimes required to be converted into an analog quantity for practical use, and the conversion is called "digital-to-analog conversion". The digital-analog converter mainly comprises a digital register, an analog electronic switch, a bit weight network, a summing operational amplifier and a reference voltage source (or constant current source). The analog electronic switches of corresponding bits are controlled by using each bit digital code of digital quantity stored in digital register, so that the bit with digital code 1 generates current value in direct proportion to its bit weight on bit weight network, and then the current values are summed by operational amplifier and converted into voltage value. The inside data processing module that has of vocal module 13 can pass through voice broadcast with the data that detect.

as shown in fig. 3, the POE testing module 8 distinguishes a standard POE power supply mode and a non-standard POE power supply mode by simulating a POE detection signature, and detects a port number and a voltage value corresponding to the live line. The hunting signal transmitting module 5 transmits hunting signals for telephone lines and coaxial lines, or transmits hunting signals suitable for network lines and shielded lines, and receives the signals through the digital-analog signal self-adaptive switching module 10. The sound production module 13 is respectively connected with the analog signal receiving module 10, the digital signal receiving module 11, the digital-analog signal self-adaptive switching module 12 and the far-end line measuring module 14. The data detected by the line measuring module 6 and the far-end line measuring module 11 are displayed in a digital form through the display module 3. And the switch port flicker test module 7 is connected with the switch and then realizes regular frequency flicker of the port of the switch in a mode of sending data packets at a fixed frequency.

When the intelligent power supply is used, the first power module is used for supplying power to the MCU module, the display module, the line searching signal transmitting module, the line testing module, the POE testing module and the switch port flicker testing module.

The MCU module is used for responding to the key function of the key module, controlling the display effect of the display module, controlling the hunting mode of the hunting signal transmitting module, controlling the test mode of the testing module, receiving and processing the test result and controlling the display module to display the test result; controlling a POE testing module to test the POE switch to process the obtained data, and controlling a display module to display a testing result; and controlling a switch port flicker test module.

And the hunting signal transmitting module is used for receiving the hunting command sent by the MCU module, selecting the corresponding hunting mode and outputting a signal to the corresponding cable to be tested.

The testing line module receives the command sent by the MCU module for testing, and the MCU module is accessed from different pins.

And the POE testing module receives the testing command sent by the MCU module, tests the command and detects the output voltage value of the simulated POE by using the AD interface of the MCU module.

And the switch port flashing module receives the test command sent by the MCU module, and starts to send a data packet to the switch port at a fixed frequency so as to control the flashing frequency of the switch port.

As shown in fig. 3-6, the POE test module is wired: the four pins of the RJ45 interface JP3 and 1236 are signal pins or standard POE power supply pins, 4578 has no signal transmission, and are non-standard POE power supply pins with names NET45 and NET 78. The four pins 1236 pass through a common mode transformer U9 to separate power supply and signals, and the output pins are the 10 th pin and the 15 th pin of U9, which are named as NET12 and NET 36. NET12, NET36, NET45 and NET78 are connected with R58, R59, R60 and R61 respectively and are connected with R62, R63, R64 and R24 respectively and then are grounded to form a voltage dividing line, and the PADT12, PADT36, PADT45 and PADT78 are connected with pins 14, 15, 16 and 17 of the MCU module and used for the MCU module to detect the AD value of POE voltage. NET12, NET36, NET45 and NET78 are connected with diodes D6, D7, D8, D9, D11, D12, D13 and D14 of a bridge rectifier circuit, the positive electrodes of the diodes D11, D12, D13 and D14 are connected with a resistor R19, the positive electrode of a voltage stabilizing diode D15 and a resistor R69 are connected, the other end of R69 is connected with R36 and an optocoupler U6 of a signature circuit, the other end of the optocoupler is connected with a power module which can be controlled by an MCU module, the power module controlled by the MCU module is connected with the R22 through direct current voltage, one end of the power module is connected with an optocoupler power pin and is connected with a third pin of a triode, a resistor R23 is connected between two pins of the triode, the second pin of the triode is simultaneously grounded, the first pin of the triode is simultaneously connected with a resistor R34, and the other end of the R34 is connected with the second pin of.

The test mode is as follows: one end of a network cable is connected with a POE switch, the other end of the network cable is connected with a POE detection interface JP3, a key sends a POE test command to an MCU module, the MCU module can control the level of a 2 nd pin to be lowered, an optocoupler U6 is controlled to work, meanwhile, NET12 or NET36 or NET45 of the POE switch or NET78 can always detect whether an accessed signature line is correct, the signature line is composed of a resistor R36 and an optocoupler U6, the resistance of R36 directly influences the detection of the signature line, meanwhile, NET12, NET36, NET45 and NET78 of the POE switch can be accessed into a voltage division line, the voltage obtained by voltage division of the voltage division line can be accessed into an AD pin of the MCU module through PADT12, PADT36, PADT45 and PADT78, after the AD pin reads the voltage obtained by voltage division line, the level of a second pin can be raised, the POE switch stops working, and the power supply can be judged by which POE AD pin value of the optocoupler 14, 15 and 17 of the MCU, and then judging whether the POE power supply is standard or not, wherein the POE is nonstandard and is directly supplied, when the PADT12, the PADT36, the PADT45 and the PADT78 detect the voltage, the AD value can be directly measured, the result tested in less than a fixed time can be judged to be the nonstandard POE power supply without waiting time, and the result tested in more than the fixed time is the standard POE power supply.

The foregoing is a preferred embodiment of the present invention, and it should be noted that it would be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the invention, and such modifications and enhancements are also considered to be within the scope of the invention.

Claims

1. A multifunctional cable testing tool instrument comprises a host and a receiver in signal connection with the host, and is characterized in that the host comprises an MCU module, a first power module, a display module, a key control module, a line searching signal transmitting module, a line testing module, a switch port flicker testing module and a POE testing module which are respectively connected with the MCU module, the receiver comprises a second power module, an analog signal receiving module, a digital-analog signal self-adaptive switching module, a sound production module and a far-end line testing module, the second power module is respectively electrically connected with the analog signal receiving module, the digital-analog signal self-adaptive switching module and the sound production module, the line searching signal transmitting module is respectively in signal connection with the analog signal receiving module, the digital signal receiving module and the digital-analog signal self-adaptive switching module, the wire measuring module is connected with the far-end wire measuring module.

2. The multifunctional cable testing tool instrument of claim 1, wherein the POE testing module distinguishes a standard POE power supply mode and a non-standard POE power supply mode by simulating a POE detection signature, and detects a port number and a voltage value corresponding to a live cable.

3. the multifunctional cable testing tool instrument according to claim 1, wherein the hunting signal transmitting module transmits a hunting signal for a telephone line or a coaxial line, or transmits a hunting signal suitable for a network line or a shielded line, and receives the hunting signal through the digital-to-analog signal adaptive switching module.

4. The multifunctional cable testing tool instrument of claim 1, wherein the sound generation module is connected to the analog signal receiving module, the digital-to-analog signal adaptive switching module, and the remote line testing module, respectively.

5. The multi-function cable testing tool instrument of claim 1, wherein data detected by said wire measuring module and said remote wire measuring module is displayed in digital form by said display module.

6. The multifunctional cable testing tool instrument of claim 1, wherein the switch port flashing testing module is connected with the switch and then realizes regular frequency flashing of the port of the switch in a mode of sending a data packet at a fixed frequency.