Multi-channel intelligent frequency shift parameter test recorder

Abstract

The utility model relates to a multipath intelligent frequency shift parameter test recorder, comprising a box body and an operation board, the operation board is provided with a plurality of input interfaces, the plurality of input interfaces are connected with a host, and the host comprises an MCU chip, a channel selection control circuit, an analog signal processing circuit and an ADC module; the input end of the channel selection control circuit is electrically connected with the input interfaces, the control end of the selection control circuit is electrically connected with the output end of the MCU chip, the output end of the selection control circuit is connected with the analog signal processing circuit, the output end of the analog signal processing circuit is connected with the ADC module, and the ADC module is in communication connection with the MCU chip; the MCU chip is also connected with a communication module and a power supply module. According to the utility model, a plurality of input interfaces are arranged and can be connected with a plurality of frequency shift attenuation discs at the same time, the channel selection control circuit and the MCU chip are combined to provide a hardware basis for realizing one-key detection, a detection system does not need to be built repeatedly, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of railway signal detection, in particular to a multi-channel intelligent frequency shift parameter test recorder. Background Art

[0002] The ZPW-2000 series track circuit uses rails as conductors to automatically and continuously detect whether a line is occupied by a train. Furthermore, the track signal transmitted by the track circuit provides a moving authorization (MA) to the train's onboard signaling equipment through electromagnetic induction. The ZPW-2000 series track circuit is equipped with a frequency-shift attenuator. The frequency-shift attenuator has a main track output interface and a small track output interface. During routine maintenance, technicians connect the main track output interface and the small track output interface to test the main track low frequency (Hz), main track carrier frequency (Hz), main track reference frequency (Hz), small track low frequency (Hz), small track carrier frequency (Hz), and small track reference frequency (Hz). Existing equipment can only connect one frequency-shift attenuator at a time. After testing, the test line is unplugged and the test can be carried out at the next location. Because existing testing equipment requires connection to a host computer, setting up the testing system is cumbersome. Summary of the Invention

[0003] In order to solve the problem that the existing frequency shift parameter detection equipment is relatively cumbersome to build a detection system, the utility model proposes a multi-channel intelligent frequency shift parameter test recorder with multiple input interfaces that can be connected to multiple frequency shift attenuation disks at the same time. The channel selection control circuit and the MCU chip provide a hardware basis for realizing one-key detection. The communication module is used to connect to the host computer, and there is no need to repeatedly build the detection system, which is easy to use.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a multi-channel intelligent frequency shift parameter test recorder, including a box, a work panel is provided in the box, a plurality of input interfaces are provided on the work panel, and the plurality of input interfaces are connected to a host, and the host includes an MCU chip, a channel selection control circuit, an analog signal processing circuit and an ADC module;

[0005] The input end of the channel selection control circuit is electrically connected to the multiple input interfaces respectively, the control end of the selection control circuit is electrically connected to the output end of the MCU chip, the output end of the selection control circuit is connected to the analog signal processing circuit, the output end of the analog signal processing circuit is connected to the ADC module, and the ADC module is communicatively connected to the MCU chip;

[0006] The MCU chip is also connected to a communication module and a power module.

[0007] Furthermore, the communication module includes a wired communication module and a wireless communication module, the wired communication module includes a LAN module, and the hosts communicate in series via the LAN module;

[0008] The wireless communication module includes one or more combinations of a WIFI module, a Bluetooth module, a Zigbee module and a LoRa module;

[0009] The operation board is provided with a connection hole corresponding to the LAN module.

[0010] The LAN module is set to realize communication between hosts. When one host cannot communicate with the host computer through the wireless communication module, the wireless communication module of another host is used to communicate with the host computer through the LAN module to complete the upload of detection data.

[0011] Furthermore, the channel selection control circuit includes a plurality of MOS switches, wherein the G pole of the MOS switch is connected to the IO pin of the MCU chip, the S pole is connected to the input interface, and the D pole is connected to the analog signal processing circuit.

[0012] The IO of the MCU chip outputs a high level, the MOS switch is turned on, and the channel constructed by the input interface and the analog signal processing circuit is opened.

[0013] Furthermore, the power module includes a power adapter, a power jack and a step-down circuit, the power adapter is connected to the mains and is connected to the step-down circuit via the power jack;

[0014] The host and the step-down circuit are connected in series with a power button.

[0015] Furthermore, the box body is a square structure with a hollow interior and an open top. A box cover is hingedly connected to the side of the box body. The box body and the box cover are fixed by buckles. A handle is provided on the side of the box body, and the handle is rotatably connected to the box body.

[0016] The operation plate corresponding to the box body is a square plate, and the operation plate and the box body are fixed by bolts.

[0017] A case cover and a handle are provided to facilitate carrying the equipment.

[0018] Through the above technical solution, the beneficial effects of the utility model are:

[0019] 1. This utility model constructs multiple signal channels that can be connected to multiple frequency-shift attenuation discs simultaneously. Combined with an MCU chip and a channel selection control circuit, it provides the hardware foundation for automatic detection of multi-channel frequency-shift parameters. Multiple input interfaces are provided, each connected to the output of multiple frequency-shift attenuation discs via detection lines. The MCU chip controls the opening and closing of multiple channels via the channel selection control circuit. The output signals of the frequency-shift attenuation discs are processed by the analog signal processing circuit and the ADC module, and the output digital signals are transmitted to the MCU chip. The MCU chip then uploads the detection parameters to the host computer via the communication module. This eliminates the need to repeatedly build a detection system, making it easy to use.

[0020] 2. The utility model is provided with a LAN module, and two hosts can be connected online through the LAN module. When one host cannot communicate with the host computer through the wireless communication module, the wireless communication module of the other host can be used to communicate with the host computer through the LAN module to complete the upload of the detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the electrical principle diagram of a multi-channel intelligent frequency shift parameter test recorder of the utility model.

[0022] Figure 2 The utility model is a structural diagram of a multi-channel intelligent frequency shift parameter test recorder.

[0023] Figure numbers: 1 is the box body, 2 is the operation board, 3 is the input interface, 4 is the MCU chip, 5 is the channel selection control circuit, 6 is the analog signal processing circuit, 7 is the ADC module, 8 is the communication module, 9 is the power module, 10 is the box cover, and 11 is the handle. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] Example 1

[0026] like Figures 1 and 2 As shown, a multi-channel intelligent frequency shift parameter test recorder includes a box 1, an operation board 2 is provided in the box 1, and a plurality of input interfaces 3 are provided on the operation board 2. The plurality of input interfaces 3 are connected to a host, and the host includes an MCU chip 4, a channel selection control circuit 5, an analog signal processing circuit 6 and an ADC module 7;

[0027] The input end of the channel selection control circuit 5 is electrically connected to the multiple input interfaces 3 respectively, the control end of the selection control circuit is electrically connected to the output end of the MCU chip 4, the output end of the selection control circuit is connected to the analog signal processing circuit 6, the output end of the analog signal processing circuit 6 is connected to the ADC module 7, and the ADC module 7 is communicatively connected to the MCU chip 4;

[0028] The MCU chip 4 is also connected to a communication module 8 and a power module 9 .

[0029] In this embodiment, the MCU chip 4 is a GD32F450ZI chip, and the analog signal processing circuit 6 includes a filter circuit.

[0030] The communication module 8 includes a wired communication module and a wireless communication module. The wired communication module includes a LAN module. The hosts communicate in series via the LAN module.

[0031] The wireless communication module includes one or more combinations of a WIFI module, a Bluetooth module, a Zigbee module and a LoRa module;

[0032] The operation board is provided with a connection hole corresponding to the LAN module.

[0033] In this embodiment, the wireless communication module uses a WIFI module, specifically an ESP8266 chip. The LAN module is an Ethernet transceiver, specifically a KSZ8041NL module. The MCU chip 4 communicates with the LAN module via a UART serial port, and the MCU chip 4 communicates with the WIFI module via a UART serial port.

[0034] The channel selection control circuit 5 includes a plurality of MOS switches, wherein the G pole of the MOS switch is connected to the IO pin of the MCU chip 4 , the S pole is connected to the input interface 3 , and the D pole is connected to the analog signal processing circuit 6 .

[0035] In this embodiment, the number of input interfaces 3 is 24, the number of MOS switches is 24, and when the output pin of the MCU chip 4 is high, the corresponding MOS switch is turned on, and when the output pin of the MCU chip 4 is low, the MOS switch is turned off.

[0036] The power module includes a power adapter, a power jack and a step-down circuit, the power adapter is connected to the mains and is connected to the step-down circuit via the power jack;

[0037] The host and the step-down circuit are connected in series with a power button.

[0038] The power adapter inputs DC12V current.

[0039] The box body 1 is a square structure with a hollow interior and an open top. A box cover 10 is hinged to the side of the box body 1. The box body 1 and the box cover 10 are fixed by buckles. A handle 11 is provided on the side of the box body 1, and the handle 11 is rotatably connected to the box body 1.

[0040] The work plate 2 corresponding to the box body 1 is a square plate, and the work plate 2 and the box body 1 are fixed by bolts.

[0041] To operate, first connect the power adapter to the mains and the power plug to the power jack. Depending on the test task, connect one end of the test cable to input interface 3 and the other end to the frequency shift attenuator jack of the frequency shift device corresponding to the block section. After connecting multiple frequency shift attenuator disks to input interface 3, press the power button to power on the host.

[0042] The program can be used to set various detection modes, including: Single Test: Select several channels and perform a single measurement. Automatic Test: Select several channels and perform automatic cycle measurement. Single Channel Test: Select a single channel and perform a single measurement.

[0043] In this embodiment, a single test is described. The operating principles of automatic testing, single-channel testing and single testing are the same. Multiple input interfaces 3 are connected to multiple frequency-shift attenuation disks, and combined with analog switch chips to form 26 channels. The "switches" of the 26 channels are controlled by the analog switch chip. In a single test, the MCU chip 4 outputs a high level to the corresponding IO pins in the same order as the channel sequence, so that the MOS switches are turned on in sequence. When the first MOS switch is turned on, the corresponding channel 1 between input interface 3 No. 1 and analog signal processing circuit 6 is turned on, and the detection signal enters the analog signal processing circuit 6 and is then converted to AD by the ADC module 7. The MCU chip 4 receives the digital signal, and the MCU chip 4 uploads the detection signal of channel 1 to the host computer through the WIFI module, followed by channels 2 to 26. Thus, the detection task is completed.

[0044] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A multi-channel intelligent frequency shift parameter test recorder, characterized in that: The invention comprises a box (1), wherein an operation board (2) is provided in the box (1), and a plurality of input interfaces (3) are provided on the operation board (2), wherein the plurality of input interfaces (3) are connected to a host, and the host comprises an MCU chip (4), a channel selection control circuit (5), an analog signal processing circuit (6), and an ADC module (7); The input end of the channel selection control circuit (5) is electrically connected to the plurality of input interfaces (3), the control end of the selection control circuit is electrically connected to the output end of the MCU chip (4), the output end of the selection control circuit is connected to the analog signal processing circuit (6), the output end of the analog signal processing circuit (6) is connected to the ADC module (7), and the ADC module (7) is communicatively connected to the MCU chip (4); The MCU chip (4) is also connected to a communication module (8) and a power module (9).

2. A multi-channel intelligent frequency shift parameter test recorder according to claim 1, characterized in that: The communication module (8) includes a wired communication module and a wireless communication module, the wired communication module includes a LAN module, and the host and the host communicate in series via the LAN module; The wireless communication module includes one or more combinations of a WIFI module, a Bluetooth module, a Zigbee module and a LoRa module; The operation board (2) is provided with a connection hole corresponding to the LAN module.

3. A multi-channel intelligent frequency shift parameter test recorder according to claim 1, characterized in that: The channel selection control circuit (5) includes a plurality of MOS switches, wherein the G pole of the MOS switch is connected to the IO pin of the MCU chip (4), the S pole is connected to the input interface (3), and the D pole is connected to the analog signal processing circuit (6).

4. A multi-channel intelligent frequency shift parameter test recorder according to claim 1, characterized in that: The power module (9) comprises a power adapter, a power socket and a step-down circuit, wherein the power adapter is connected to the mains and is connected to the step-down circuit via the power socket; The host and the step-down circuit are connected in series with a power button.

5. A multi-channel intelligent frequency shift parameter test recorder according to claim 1, characterized in that: The box body (1) is a square structure with a hollow interior and an open top. A box cover (10) is hingedly connected to the side of the box body (1). The box body (1) and the box cover (10) are fixed by snap fasteners. A handle (11) is provided on the side of the box body (1), and the handle (11) is rotatably connected to the box body (1). The operation plate (2) corresponding to the box body (1) is a square plate, and the operation plate (2) and the box body (1) are fixed by bolts.

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