CN216310195U - Detection device and system - Google Patents
Detection device and system Download PDFInfo
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- CN216310195U CN216310195U CN202122250748.5U CN202122250748U CN216310195U CN 216310195 U CN216310195 U CN 216310195U CN 202122250748 U CN202122250748 U CN 202122250748U CN 216310195 U CN216310195 U CN 216310195U
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Abstract
One embodiment of the utility model discloses a detection device and a system, wherein the detection device comprises: the device comprises a main control substrate, a contact substrate, a switching substrate, a test substrate and a power supply; the main control substrate is used for outputting a detection level signal to the switching substrate according to a detection signal sent by the upper computer, outputting a detection control signal to the contact substrate, and receiving a state signal fed back by the contact substrate and a detection result signal transmitted by the switching substrate to the upper computer; the switching substrate is used for outputting a detection level control signal to a detected product according to the detection level signal, converting a detection result signal fed back by the detected product and then sending the converted detection result signal to the main control substrate; the contact substrate is used for controlling the power supply to be started according to the detection control signal, outputting a state signal to the main control substrate according to the current value fed back by the test substrate and the voltage value output by the power supply, and controlling the power supply to be started and closed according to the state signal; and the test substrate is used for acquiring the current value of the tested product and sending the current value to the contact substrate.
Description
Technical Field
The utility model relates to the technical field of equipment detection, in particular to a detection device and a detection system.
Background
Among the current detection device, the components and parts in the circuit board can change because of long-time work parameter under the high temperature and high humidity environment, have the appearance of phenomena such as signal unstability, short circuit and then cause the inaccurate condition such as test result or even circuit board trouble, then can lead to at last being surveyed the product bad, cause waste in time and the cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a detection device and a detection system, which can detect products in a high-temperature and high-humidity working environment, and can cut off a power supply in time to protect a circuit when an abnormality occurs in the detection process.
In order to achieve the purpose, the utility model adopts the following technical scheme:
one aspect of the present invention provides a detection apparatus, including: the device comprises a main control substrate, a contact substrate, a switching substrate, a test substrate and a power supply; the main control substrate is an STM32F series chip or FPGA;
the main control substrate is used for outputting a detection level signal to the switching substrate according to a detection signal sent by an upper computer, outputting a detection control signal to the contact substrate, and receiving a state signal fed back by the contact substrate and a detection result signal transmitted by the switching substrate to the upper computer;
the switching substrate is used for outputting a detection level control signal to a detected product according to the detection level signal, converting a detection result signal fed back by the detected product and then sending the converted detection result signal to the main control substrate;
the contact substrate is used for controlling the power supply to be switched on according to the detection control signal, outputting a state signal to the main control substrate according to the current value fed back by the test substrate and the voltage value output by the power supply, and controlling the power supply to be switched on and off according to the state signal;
the power supply is connected with the contact substrate and used for supplying power to the contact substrate, the master control substrate and the tested product;
the test substrate is connected with a tested product and used for collecting the current value of the tested product to the contact substrate.
In a specific embodiment, the detection device further comprises an indicator light;
the indicator light is connected with the main control substrate and used for displaying corresponding colors according to the state signals.
In a specific embodiment, the indicator light further comprises a manual start button;
and the manual starting key is used for sending a detection signal to the main control substrate.
In a specific embodiment, the contact substrate includes: the low dropout linear regulator and the UCD series voltage monitoring chip;
the input end of the low-dropout linear regulator is connected with the power supply, and the output end of the low-dropout linear regulator is respectively connected with the input end of the test substrate and the first input end of the UCD series voltage monitoring chip;
a second input end of the UCD series of voltage monitoring chips is connected with the output end of the test substrate;
the output end of the UCD series voltage monitoring chip is connected with the control end of the low dropout linear regulator;
and the input and output ends of the UCD series voltage monitoring chips are connected with the first input and output end of the main control substrate.
In one embodiment, the UCD series voltage monitor chip communicates with the main control substrate via an IIC.
In one particular embodiment, the test substrate includes a current sensing resistor and a current sensing amplifier;
the first end of the current detection resistor is connected with the output end of the low dropout linear regulator;
the second end of the current detection resistor is connected with a product to be tested;
and the current detection amplifier is used for amplifying the current value acquired by the current detection resistor and then sending the amplified current value to the voltage monitoring chips of the UCD series.
In one embodiment, the interposer substrate is a level shifter.
In one particular embodiment of the present invention,
the level converter is a PCA9617 chip;
the low dropout linear regulator is an LDO chip;
the current detection amplifier is an LT6105 chip.
In one embodiment, the level shifter communicates with the main control substrate via an IIC.
In another aspect, the present invention provides a detection system, including:
the upper computer and the detection device;
and the upper computer sends a detection signal to the detection device and displays and analyzes the signal fed back by the detection device.
The utility model has the following beneficial effects:
according to the detection device and the detection system provided by the utility model, an STM32F series chip or FPGA is used as a core to design a hardware circuit capable of working in an extreme environment, so that the detection device can detect a detected product in a high-temperature and high-humidity environment; the power supply protection circuit can be timely cut off when the abnormality such as overcurrent or overvoltage is detected, the data of the detected product in different abnormalities are recorded, the abnormal working state of the detected product is analyzed, the performance of the detected product is improved, and whether the abnormality occurs is visually displayed and detected by displaying different colors through the indicating lamp; meanwhile, the method supports multi-channel detection, and is simple to operate, high in efficiency, low in loss and low in cost.
Drawings
In order to more clearly illustrate the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are one embodiment of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram illustrating a configuration of a detection system according to an embodiment of the present invention.
Fig. 2 is a schematic circuit diagram illustrating the connection of the main control substrate, the contact substrate, the test substrate, the power supply and the product under test in the inspection apparatus according to an embodiment of the present invention.
Fig. 3 is a schematic circuit diagram illustrating the connection of the master substrate, the interposer substrate and the product under test in the inspection apparatus according to an embodiment of the utility model.
Detailed Description
In order to make the technical solution of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and examples. The present invention will be described in detail with reference to specific examples, but the present invention is not limited to these examples. Variations and modifications may be made by those skilled in the art without departing from the principles of the utility model and should be considered within the scope of the utility model.
The present embodiment provides a detection system, as shown in fig. 1, the detection system includes: host computer and a detection device. The detection device includes: the device comprises a main control substrate, a contact substrate, a switching substrate, a test substrate, a power supply and an indicator light.
The main control substrate is respectively connected with the upper computer, the indicating lamp, the contact substrate and the switching substrate; the contact substrate is respectively connected with the power supply and the test substrate; the switching substrate and the test substrate are connected with a tested product.
The indicating lamp also comprises a manual starting key, and the power supply outputs direct-current voltage.
As shown in fig. 2, the main control substrate is an STM32F series chip or FPGA (Field-Programmable Gate Array); the contact substrate comprises a low dropout linear regulator and a UCD series voltage monitoring chip; the test substrate includes a current sensing resistor and a current sensing amplifier.
For example, in a specific embodiment, the master substrate can use an STM32F777 chip in an STM32F series chip, specifically model number STM32F777nih7tr, and supplier stmicroelectronics; the low dropout regulator can use an LDO (low dropout regulator) chip, and the specific model is TPS79301DBVRG4Q1, and the supplier is texas instruments; the UCD9090 chip can be used as the voltage monitoring chip of the UCD series, the specific model is UCD9090rgzt, and the supplier is texas instruments; the current sense amplifier can use an LT6105 chip, model LT6105hms8# pbf, available from analog devices inc.
The input end of the low-dropout linear regulator is connected with the power supply, and the output end of the low-dropout linear regulator is respectively connected with the input end of the test substrate and the first input end of the voltage monitoring chip of the UCD series; a second input end of the UCD series of voltage monitoring chips is connected with the output end of the test substrate; the output end of the UCD series voltage monitoring chip is connected with the control end of the low dropout linear regulator; and the input and output ends of the UCD series voltage monitoring chips are connected with the first input and output end of the main control substrate. The second input/output end of the main control substrate is connected with the upper computer, and the third input/output end of the main control substrate is connected with the indicator lamp.
Wherein, the output end of the voltage monitoring chip of the UCD series is a GPIO (General-purpose input/output) port. The first and second input terminals of the voltage monitoring chip of the UCD series are both included in the detection port MONITOR of the voltage monitoring chip of the UCD series. The UCD series voltage monitoring chip communicates with the main control substrate via an Inter-Integrated Circuit (IIC). The low dropout regulator is used for improving the quality of the voltage output by the power supply.
The first end of the current detection resistor (namely the input end of the test substrate) is respectively connected with the output end of the low dropout linear regulator and the first input end of the current detection amplifier; the second end of the current detection resistor is respectively connected with the second input end of the current detection amplifier and a product to be detected; the output end of the current detection amplifier (namely the output end of the test substrate) is connected with the second input end of the voltage monitoring chip of the UCD series. The current detection resistor is used for collecting the current value of a tested product; and the current detection amplifier is used for amplifying the current value acquired by the current detection resistor and then sending the amplified current value to the voltage monitoring chips of the UCD series.
As shown in fig. 3, the transit substrate includes a level shifter. According to the requirement, a specific port of the main control substrate is selected as an IIC input/output port, for example, when the main control substrate selects an STM32F777 chip, a PB8/PB9 port of the STM32F777 chip can be selected as the IIC input/output port, one IIC input/output port can be connected with input ends of five level shifters, and output ends of the level shifters are connected with a product to be tested. When a detected product needs to be detected, only one level shifter is needed, and when N detected products need to be detected, N level shifters are correspondingly arranged and N test substrates in one-to-one correspondence with the detected products are arranged to complete the task of detecting the N detected products simultaneously. The level shifter has a level shifting function, can convert a detection level signal transmitted by the main control substrate into a detection level control signal which can be identified by a detected product, can also convert a detection result signal transmitted by the detected product into a signal which can be identified by the main control substrate and the upper computer and then sends the signal to the upper computer through the main control substrate, and the level shifter is communicated with the main control substrate through IIC. The rate of IIC can be detected by applying a suitable pull-up resistor across the level shifter and measuring the waveform across the level shifter using an oscilloscope. Wherein N is a natural number greater than 1.
For example, in one embodiment, the level shifter can use a PCA9617 chip, model PCA9617adpj, and nxpusainc.
Before the detection starts, the upper computer configures and debugs the whole detection device, and downloads a driving program for the main control substrate and the UCD series voltage monitoring chips.
In a specific embodiment, a worker puts the whole set of detection device and a product to be detected into a high-temperature high-humidity test box, sets the temperature and the humidity to 85 ℃ and 85% RH respectively, displays the temperature and humidity information on an upper computer, and sends a detection signal to a main control substrate by operating the upper computer or pressing a manual start key on an indicator lamp to start detecting the product to be detected.
The main control substrate outputs a detection level signal to the switching substrate according to the received detection signal and outputs a detection control signal to the contact substrate; the UCD series voltage monitoring chip in the contact substrate starts an enabling pin of the low-dropout linear regulator through a GPIO port according to a detection control signal so as to start the power supply, and the power supply supplies power to the contact substrate, the main control substrate, the indicator lamp and a tested product through the low-dropout linear regulator; the switching substrate outputs a detection level control signal to a detected product according to the detection level signal to detect the detected product; the tested product responds to the detection and outputs a detection result signal to the level converter in the switching substrate, the level converter converts the detection result signal and transmits the detection result signal to the upper computer through the main control substrate, and the upper computer analyzes the received detection result signal to obtain detection result data and displays the detection result data.
In the detection process, a current detection resistor collects the current value of a detected product in real time, and a current detection amplifier amplifies the current value and outputs the amplified current value to a UCD series voltage monitoring chip; a first input end of the UCD series voltage monitoring chip receives a voltage value output by a power supply through a low-dropout linear regulator, the UCD series voltage monitoring chip outputs a state signal to the main control substrate according to the received voltage value and controls the power supply to be turned on and off according to the state signal, for example, when the UCD series voltage monitoring chip judges that the voltage value exceeds a preset value according to a preset program, an abnormal state signal is sent to the main control substrate, an enabling pin of the low-dropout linear regulator is turned off so that the power supply is turned off, the detection is stopped, the main control substrate sends the abnormal state signal to an upper computer and an indicator lamp, the indicator lamp is bright red according to the abnormal state signal, and the upper computer records and displays the received abnormal state signal and alarms to remind a worker to detect the abnormality; when the voltage monitoring chips of the UCD series judge that the voltage current value does not exceed the preset value according to a preset program, a normal state signal is sent to the main control substrate, the main control substrate sends the normal state signal to an upper computer and an indicator lamp, the indicator lamp is in a green state according to the normal state signal, detection is normally carried out, and the upper computer records and displays the received normal state signal. Wherein the status signal includes status information indicating whether the voltage current value and the voltage current value received by the voltage monitoring chips of the UCD series exceed preset values.
In the actual detection process, multiple rounds of 100-hour cyclic detection are generally required to be performed on the detected product, and the purpose of transmitting a detection signal once to perform multiple rounds of detection on the detected product can be achieved by changing corresponding parameters in a main control substrate driving program.
According to the detection device and the detection system provided by the embodiment, an STM32F series chip or FPGA is used as a core to design a hardware circuit capable of working in an extreme environment, so that the detection device can detect a detected product in a high-temperature and high-humidity environment; the power supply protection circuit can be timely cut off when the abnormality such as overcurrent or overvoltage is detected, the data of the detected product in different abnormalities are recorded, the abnormal working state of the detected product is analyzed, the performance of the detected product is improved, and whether the abnormality occurs is visually displayed and detected by displaying different colors through the indicating lamp; meanwhile, the method supports multi-channel detection, and is simple to operate, high in efficiency, low in loss and low in cost.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. A detection device, characterized in that the detection device comprises: the device comprises a main control substrate, a contact substrate, a switching substrate, a test substrate and a power supply; the main control substrate is an STM32F series chip or FPGA;
the main control substrate is used for outputting a detection level signal to the switching substrate according to a detection signal sent by an upper computer, outputting a detection control signal to the contact substrate, and receiving a state signal fed back by the contact substrate and a detection result signal transmitted by the switching substrate to the upper computer;
the switching substrate is used for outputting a detection level control signal to a detected product according to the detection level signal, converting a detection result signal fed back by the detected product and then sending the converted detection result signal to the main control substrate;
the contact substrate is used for controlling the power supply to be switched on according to the detection control signal, outputting a state signal to the main control substrate according to the current value fed back by the test substrate and the voltage value output by the power supply, and controlling the power supply to be switched on and off according to the state signal;
the power supply is connected with the contact substrate and used for supplying power to the contact substrate, the master control substrate and the tested product;
the test substrate is connected with a tested product and used for collecting the current value of the tested product to the contact substrate.
2. The detection device of claim 1, further comprising an indicator light;
the indicator light is connected with the main control substrate and used for displaying corresponding colors according to the state signals.
3. The detection device of claim 2, wherein the indicator light further comprises a manual actuation button;
and the manual starting key is used for sending a detection signal to the main control substrate.
4. The detection device of claim 3, wherein the contact substrate comprises: the low dropout linear regulator and the UCD series voltage monitoring chip;
the input end of the low-dropout linear regulator is connected with the power supply, and the output end of the low-dropout linear regulator is respectively connected with the input end of the test substrate and the first input end of the UCD series voltage monitoring chip;
a second input end of the UCD series of voltage monitoring chips is connected with the output end of the test substrate;
the output end of the UCD series voltage monitoring chip is connected with the control end of the low dropout linear regulator;
and the input and output ends of the UCD series voltage monitoring chips are connected with the first input and output end of the main control substrate.
5. The device as claimed in claim 4, wherein the UCD series voltage monitoring chip communicates with the main control substrate via IIC.
6. The test device of claim 5, wherein the test substrate includes a current sensing resistor and a current sensing amplifier;
the first end of the current detection resistor is connected with the output end of the low dropout linear regulator;
the second end of the current detection resistor is connected with a product to be tested;
and the current detection amplifier is used for amplifying the current value acquired by the current detection resistor and then sending the amplified current value to the voltage monitoring chips of the UCD series.
7. The device as claimed in claim 6, wherein the interposer substrate is a level shifter.
8. The detection apparatus according to claim 7,
the level converter is a PCA9617 chip;
the low dropout linear regulator is an LDO chip;
the current detection amplifier is an LT6105 chip.
9. The detecting device for detecting the rotation of a motor rotor as claimed in claim 7, wherein the level shifter communicates with the main control substrate through an IIC.
10. A detection system, characterized in that the detection system comprises:
a host computer and the detection device of any one of claims 1-9;
and the upper computer sends a detection signal to the detection device and displays and analyzes the signal fed back by the detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122250748.5U CN216310195U (en) | 2021-09-16 | 2021-09-16 | Detection device and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122250748.5U CN216310195U (en) | 2021-09-16 | 2021-09-16 | Detection device and system |
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| CN216310195U true CN216310195U (en) | 2022-04-15 |
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| CN202122250748.5U Active CN216310195U (en) | 2021-09-16 | 2021-09-16 | Detection device and system |
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