Transmitter detection equipment

Abstract

The invention relates to the technical field of transmitter detection, and discloses transmitter detection equipment, which comprises a main control computer, a data acquisition card, a signal conditioning box, a load box and a test cable, the main control computer in the main control computer and the data acquisition card is set to be a PXI-8101 industrial personal computer, each board card in the data acquisition card is provided with four analog input differential ports, the transmitter detection equipment can be used as detection function inspection equipment for two components of a wake flow transmitter and a forward-looking transmitter, and under the condition that hardware is not changed, the detection function of the wake flow transmitter and the forward-looking transmitter can be accurately detected. The wake flow transmitter detection software, the wake flow transmitter assembly and the forward-looking transmitter detection software are operated, so that the forward-looking transmitter can be detected, and the device is suitable for inspection, handover inspection and performance testing of items such as wake flow transmitter and forward-looking transmitter debugging and environmental stress screening.

Description

Technical Field

[0001] The present invention relates to the technical field of transmitter detection, in particular to a transmitter detection device. Background Art

[0002] The detection equipment provides the wake transmitter and the forward-looking transmitter with the transmission control signal and the power control signal necessary for their operation through the computer, and provides the corresponding load at the same time, so that the wake transmitter and the forward-looking transmitter are in normal working state, and collects the three-channel detection signal and the signal generated on the load into the computer through the test circuit, and then compares them with the technical requirements to determine whether the transmitter is working normally; the detection equipment can well control the normal operation of the wake transmitter and the forward-looking transmitter, and can also accurately detect the performance and technical parameters of the wake transmitter and the forward-looking transmitter.

[0003] The detection equipment has the function of detecting two components, the wake transmitter and the forward-looking transmitter. When the hardware remains unchanged, the wake transmitter detection software can be run to detect the wake transmitter component; the forward-looking transmitter detection software can be run to detect the forward-looking transmitter.

[0004] The hardware of the detection equipment, especially the power supply, is designed with reasonable insulation and safety protection measures to ensure that there is no leakage. The signals that the acquisition board needs to collect are higher than the acquisition voltage range, and are all processed by voltage reduction and current limiting to make them completely within the appropriate acquisition range to ensure the safety of the acquisition board. The high-voltage and high-current power supply control is not only programmed, but also an air switch is installed on the panel, which has double insurance and safety. The human-computer interaction safety design reduces the complexity of human-computer interaction, simplifies user operation, and sets necessary prompts to reduce the error rate of user operation, ensure the safety of the product, and is easy to transport and has good security.

[0005] During product testing, the testing equipment and the product can be easily connected. Two cables are needed to connect the testing equipment to a single set of testing products. After the connection, the program can be run to complete the automatic test. The panel of the testing equipment is equipped with all the testing ports for product testing. Standard equipment testing can be completed through the testing ports on the panel. The comparison and confirmation of automatic test results with those of standard equipment can be easily completed, which is convenient for calibration and product testing. Summary of the invention

[0006] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a transmitter detection device which can well control the normal operation of a wake transmitter and a forward-looking transmitter, and can also accurately detect the performance and technical parameters of the wake transmitter and the forward-looking transmitter, thereby reducing the complexity of human-computer interaction, simplifying user operation, and setting necessary prompts to reduce the error rate of user operation, thereby ensuring the safety of the product, and is easy to transport and has good security. It is convenient to complete the comparison and confirmation of automatic detection results with the detection results of standard equipment, and is convenient for calibration and product testing. It solves the problems that the human-computer interaction in the detection process is relatively complex, the user operation is cumbersome, and the user operation is prone to errors, and the product has low safety, is not convenient for transportation, and has poor security.

[0007] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a transmitter detection device, including a main control computer and a data acquisition card, a signal conditioning box, a load box and a test cable, wherein the main control computer and the data acquisition card are arranged inside a chassis at the same time, wherein the main control computer in the main control computer and the data acquisition card is set as a PXI-8101 industrial computer, and each board in the data acquisition card has 4 differential analog input ports, a sampling rate of 10MS, an input resolution of 12 bits, 2 analog output ports, an output sampling rate of 12 bits, 8 digital I / Os, and 2 24-bit counters. The inspection table adopts 2 NI6115 high-speed data acquisition cards to realize 8-channel differential data acquisition, which can meet the test requirements of the product.

[0008] Preferably, the signal conditioning box is provided with a circuit isolation and signal conversion board and a low-voltage programmable power supply. The low-voltage programmable power supply inputs AC 220V 50Hz mains power, and outputs a 5V DC voltage and a 20V~35V programmable voltage. The low-voltage programmable power supply is electrically connected to the main control computer and the main control computer inside the data acquisition card. The main function of the signal conditioning box is to isolate and enhance the control instructions for secondary processing, and control the operation and status of the wake transmitter and the forward-looking transmitter; control multiple dual four-to-one switches through I / O instructions to achieve switching of test items; the control signals and various power supplies added to the tested product are all realized through the signal conditioning, and the low-voltage programmable power supply is controlled by the serial port of the main control computer.

[0009] Preferably, a high-voltage programmable power supply is provided in the gap between the chassis outside the main control computer and the data acquisition card and the load box. The high-voltage programmable power supply is composed of two single-channel power supplies connected in series to achieve 0-±80V programmable voltage output. The high-voltage programmable power supply is electrically connected to the main control computer and the main control computer inside the data acquisition card, and a switch is provided at the connection. The high-voltage programmable power supply is controlled by the network port of the main control computer through the switch to achieve voltage output change control.

[0010] Preferably, the load box is provided with a wake transmitter, a test board, a forward-looking transmitter load and an air-cooling device, the wake transmitter and the forward-looking transmitter load are both pure resistance loads, the wake transmitter load adopts 3-way 20W metal-packaged resistors, and the forward-looking transmitter load adopts 8-way 200W metal-packaged power resistors, which have high power, high precision, small size and good heat dissipation performance; a test circuit is also installed in the load box, which performs voltage reduction and current limiting processing on the signal on the load, and reduces the signal on the load to a voltage and current range that can be safely collected by the data acquisition board; an air-cooling device is also installed in the load box, which quickly cools down the load after it heats up to ensure safe operation of the system.

[0011] Preferably, the test cables are arranged in multiple pieces and are respectively connected to the interfaces of the main control computer and the data acquisition card, the signal conditioning box and the internal equipment of the load box. The test cables are designed by selecting matching connectors according to the product and the inspection table interface. The test cables require that the connectors are reliably connected to the cables.

[0012] Preferably, the main control computer is provided with a WINDOWS Chinese operating system, and is designed using virtual instrument testing technology. The software is designed to mainly include signal simulation software, control software, detection software, and display output software. The signal simulation software simulates the input signal of the transmitter according to the requirements of the transmitter component; the control software sends out various control signals to complete product testing; different working modes are determined according to different needs, and the workflow of various working modes is further controlled; the detection software analyzes the various collected signals and then distinguishes them; the display output software displays the output waveform and test results of the transmitter component, and prints / draws the above display results.

[0013] (III) Beneficial effects Compared with the prior art, the present invention provides a transmitter detection device, which has the following beneficial effects: 1. The transmitter detection equipment, through the transmitter detection equipment hardware main control computer through the serial port and network port to generate instructions to control the low-voltage programmable power supply and the high-voltage programmable power supply, controls the voltage signal applied to the product; the data acquisition card generates control instructions to control the wake transmitter and the forward-looking transmitter through the I / O port and the analog output port, and applies them to the component under test through the circuit isolation and signal conversion board to control the working state of the component under test; the output signal of the component under test is directly applied to the simulated load of the load box, and is processed by the test board for voltage reduction and current limiting, and is switched by the circuit isolation and signal conversion board, and the signal is transmitted to the analog differential input port of the data acquisition board for data acquisition.

[0014] 2. The transmitter detection equipment has all the detection ports for product testing on the panel. Standard equipment detection can be completed through the detection ports on the panel. It is very convenient to compare and confirm the automatic detection results with the standard equipment detection results, which is convenient for calibration and product testing.

[0015] 3. The transmitter detection equipment simulates the input signal of the transmitter according to the requirements of the wake transmitter component; sends out various control signals to complete product detection; determines different working modes according to different needs, and further controls the workflow of various working modes; analyzes and then distinguishes the various collected signals; displays the output waveform and test results of the wake transmitter component, and prints / draws the above display results.

[0016] 4. The transmitter detection equipment simulates the input signal of the transmitter according to the requirements of the forward-looking transmitter component; sends out various control signals to complete product testing. Determine different working modes according to different needs, and further control the workflow of various working modes; analyze the various signals collected and then judge them; display the output waveform and test results of the forward-looking transmitter component, and print / draw the above display results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall principle block diagram of the present invention; Figure 2 It is the general layout diagram of the present invention; Figure 3 It is a flowchart of the wake emission working software of the present invention; Figure 4 It is a flowchart of the forward-looking emission working software of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Reference Figure 1-4A transmitter detection device includes a main control computer and a data acquisition card, a signal conditioning box, a load box and a test cable. The main control computer and the data acquisition card are arranged inside the chassis at the same time. The main control computer in the main control computer and the data acquisition card is set as a PXI-8101 industrial computer. Each board in the data acquisition card has 4 differential analog input ports, a sampling rate of 10MS, an input resolution of 12 bits, 2 analog output ports, an output sampling rate of 12 bits, 8 digital I / Os, and 2 24-bit counters. The inspection table adopts 2 NI6115 high-speed data acquisition cards to realize 8-channel differential data synchronous acquisition, which can meet the test requirements of the product.

[0020] The input of the wake transmitter is a TTL square wave. Since the pulse width is only 1 millisecond, the accuracy requirement is relatively high. It is sent out through the counter output port. The input signal of the forward-looking transmitter is a 29.2kHz sinusoidal signal, which is output through the analog port. The data acquisition wake is 3 channels of 390kHz sinusoidal signals, and the forward-looking transmitter is 8 channels of 29.2kHz sinusoidal signals for synchronous acquisition. 390kHz is a high-frequency signal. To ensure the acquisition effect, the NI6115 high-speed data acquisition card must be selected, but the board has only four differential input ports. In order to meet the 8 output synchronous acquisition of the forward-looking transmitter, two NI6115 high-speed data acquisition cards are selected to solve the 8-channel synchronous acquisition problem.

[0021] The main function of the signal conditioning box is to isolate and enhance the secondary processing of the control instructions, control the operation and status of the wake transmitter and the forward-looking transmitter; control multiple dual four-to-one switches through I / O instructions to achieve the switching of test items; the control signals and various power supplies added to the tested products are controlled through the signal conditioning box.

[0022] The programmable power supply uses two types of programmable power supplies, namely low-voltage programmable power supply and high-voltage programmable power supply. The low-voltage programmable power supply inputs AC 220V 50Hz mains power and outputs a 5V DC voltage and a 20V~35V programmable voltage; the high-voltage programmable power supply is composed of two single-channel power supplies in series to achieve 0~±80V programmable voltage output; the low-voltage programmable power supply is controlled by the serial port of the main control computer, and the high-voltage programmable power supply is controlled by the network port of the main control computer through the switch to achieve voltage output change control.

[0023] The load box is equipped with a wake transmitter, a test board, a forward-looking transmitter load and an air-cooling device. The wake transmitter and the forward-looking transmitter load are both pure resistance loads. The wake transmitter load uses 3-way 20W metal-packaged resistors, and the forward-looking transmitter load uses 8-way 200W metal-packaged power resistors. The forward-looking transmitter load uses 8-way 200W metal-packaged power resistors, which have high power, high precision, small size and good heat dissipation performance. A test circuit is also installed in the load box to reduce the voltage and current of the signal on the load and reduce the signal on the load to the voltage and current range that can be safely collected by the data acquisition board. An air-cooling device is also installed in the load box to quickly cool down the load after it heats up to ensure safe operation of the system.

[0024] The test cables are set to multiple lines and are respectively connected to the interfaces of the main control computer and data acquisition card, signal conditioning box and internal equipment of the load box. The test cables are designed by selecting matching connectors based on the product and inspection table interface. The test cables require that the connectors and cables are reliably connected.

[0025] The main control computer is equipped with the WINDOWS Chinese operating system, and the transmitter detection equipment software mainly uses the WINDOWS Chinese operating system; the design adopts virtual instrument testing technology, and the software design mainly includes the following aspects: according to the requirements of the forward-looking transmitter component, simulate the input signal of the transmitter; send out various control signals to complete product testing; determine different working modes according to different needs, and further control the workflow of various working modes; analyze the various collected signals and then distinguish them; display the output waveform and test results of the forward-looking transmitter component, and print / draw the above display results.

[0026] When in use, the hardware main control computer of the transmitter detection equipment generates instructions for controlling the low-voltage programmable power supply and the high-voltage programmable power supply through the serial port and the network port, and controls the voltage signal applied to the product; the data acquisition card generates control instructions for controlling the wake transmitter and the forward-looking transmitter through the I / O port and the analog output port, and applies them to the component under test through the circuit isolation and signal conversion board to control the working state of the component under test; the output signal of the component under test is directly applied to the simulated load of the load box, and is processed by the test board for voltage reduction and current limiting, and is switched by the circuit isolation and signal conversion board, and the signal is transmitted to the analog differential input port of the data acquisition board for data acquisition; after calculation and processing, the test results and output waveform are displayed on the computer screen.

[0027] Combination Figure 2 The panel of the transmitter detection equipment is equipped with all the detection ports for product testing. Standard equipment detection can be completed through the detection ports on the panel. It is very convenient to compare and confirm the automatic detection results with the standard equipment detection results, which is convenient for calibration and product testing.

[0028] Combination Figure 3 The transmitter detection equipment software uses the WINDOWS Chinese operating system as its platform; the design uses virtual instrument testing technology, and the software design mainly includes the following aspects: According to the requirements of the wake transmitter component, simulate the input signal of the transmitter; send various control signals to complete product testing; determine different working modes according to different needs, and further control the workflow of various working modes. Analyze the various signals collected and then judge them. Display the output waveform and test results of the wake transmitter component, and print / draw the above display results.

[0029] Combination Figure 4 The transmitter detection equipment software uses the WINDOWS Chinese operating system as its platform; the design uses virtual instrument testing technology, and the software design mainly includes the following aspects: According to the requirements of the forward-looking transmitter component, simulate the input signal of the transmitter; send out various control signals to complete product testing; determine different working modes according to different needs, and further control the workflow of various working modes; analyze the various collected signals and then judge them; display the output waveform and test results of the forward-looking transmitter component, and print / draw the above display results.

[0030] The present invention can be used as a detection function inspection device for the wake transmitter and the forward-looking transmitter. When the hardware remains unchanged, the wake transmitter detection software can be run to detect the wake transmitter component; the forward-looking transmitter can be detected by running the forward-looking transmitter detection software. It is suitable for inspection, verification and performance testing of projects such as wake transmitter and forward-looking transmitter debugging and environmental stress screening; the components, structures and software methods not described in detail in this embodiment are well-known components, common structures or common means in the industry, and are not described here one by one.

[0031] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transmitter detection device, including a main control computer and a data acquisition card, a signal conditioning box, a load box and a test cable, characterized in that: The main control computer and the data acquisition card are both arranged inside the chassis. The main control computer in the main control computer and the data acquisition card is set as a PXI-8101 industrial computer. Each board in the data acquisition card has 4 differential analog input ports, a sampling rate of 10MS, an input resolution of 12 bits, 2 analog output ports, an output sampling rate of 12 bits, 8 digital I / Os, and 2 24-bit counters.

2. A transmitter detection device according to claim 1, characterized in that: The signal conditioning box is provided with a circuit isolation and signal conversion board and a low-voltage program-controlled power supply. The low-voltage program-controlled power supply inputs an AC 220V 50Hz mains power supply, and outputs a 5V DC voltage and a 20V-35V program-controlled voltage. The low-voltage program-controlled power supply is electrically connected to the main control computer and the main control computer inside the data acquisition card.

3. A transmitter detection device according to claim 1, characterized in that: A high-voltage programmable power supply is provided at the gap between the chassis and the load box outside the main control computer and the data acquisition card. The high-voltage programmable power supply is composed of two single-channel power supplies connected in series to achieve a 0-±80V programmable voltage output. The high-voltage programmable power supply is electrically connected to the main control computer and the main control computer inside the data acquisition card, and a switch is provided at the connection.

4. A transmitter detection device according to claim 1, characterized in that: The load box is provided with a wake transmitter, a test board, a forward-looking transmitter load and an air cooling device. The wake transmitter and the forward-looking transmitter load are both pure resistance loads. The wake transmitter load uses 3-way 20W metal-packaged resistors, and the forward-looking transmitter load uses 8-way 200W metal-packaged power resistors.

5. A transmitter detection device according to claim 1, characterized in that: The test cables are arranged in a plurality and are respectively connected to interfaces of the main control computer and the data acquisition card, the signal conditioning box and the internal equipment of the load box.

6. A transmitter detection device according to claim 1, characterized in that: The main control computer is provided with a WINDOWS Chinese operating system.

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