CN218068220U - Floating VI source board card alarm device and system - Google Patents

Abstract

The utility model provides a VI source board card alarm device and system float, alarm device includes: the power supply monitoring module is respectively connected with the power supply module and the processor in the floating VI source board card; the power supply monitoring module comprises a preprocessing circuit, an analog-to-digital converter and a first comparator which are connected in sequence; the preprocessing circuit is used for adjusting a first voltage of a first power supply in the power supply module and sending the first voltage to the analog-to-digital converter so as to convert the first voltage into a digital signal and obtain an analog-to-digital conversion result; and the first comparator is used for outputting a first comparison result and sending the first comparison result to the processor when judging that the first comparison result exceeds a preset first threshold value so as to output a power supply abnormity alarm signal. The device includes power monitoring module, can be used to monitor the first voltage of first power, when monitoring that first voltage is unusual, can export power unusual alarm signal through the treater to remind the user in time to investigate unusual problem, avoid appearing the problem that directly crashes, thereby can improve efficiency of software testing, reduce test loss.

Description

Floating VI source board card alarm device and system

Technical Field

The utility model belongs to the technical field of the circuit test technique and specifically relates to a VI source board card alarm device and system float.

Background

Integrated circuit testing is a very important process in the integrated circuit production process, and the function and performance of an integrated circuit are evaluated and determined by comparing the actual output of the integrated circuit test with the expected output. When an integrated circuit is tested, usually, an excitation is applied, then an output signal is detected, the floating source test board card can realize the functions of an excitation unit and a detection unit, an adjustable voltage/current can be applied to a chip to be tested, and the voltage/current of the chip to be tested can be detected. Because the floating source test board has output voltage/current with a wide adjustable range, the problem of abnormal drop of the power supply voltage of the board may occur in the test process, in the related art, when the power supply abnormal condition occurs, a tester is normally directly halted, and the direct halt mode not only affects the test efficiency, but also may cause serious loss, such as possibly damaging a chip to be tested, the floating source test board, and even a tester.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a VI source board card alarm device and system float to improve efficiency of software testing, reduce the test loss.

The utility model provides a pair of VI source board card alarm device floats, include: the power supply monitoring module is respectively connected with the power supply module and the processor in the floating VI source board card; the power supply module comprises a first power supply; the power supply monitoring module comprises a preprocessing circuit, an analog-to-digital converter and a first comparator which are connected in sequence; the first power supply is connected with the preprocessing circuit; the preprocessing circuit is used for adjusting a first voltage of a first power supply; the analog-to-digital converter is used for converting the regulated first voltage from an analog signal to a digital signal to obtain an analog-to-digital conversion result; the first comparator is used for outputting a first comparison result when the analog-to-digital conversion result exceeds a preset first threshold value, and sending the first comparison result to the processor so as to output a power supply abnormity alarm signal through the processor.

Further, the power module further comprises a second power supply; the power monitoring module further comprises: the second comparator is respectively connected with the second power supply and the processor and used for outputting a second comparison result when judging that the second voltage of the second power supply exceeds a preset second threshold value, and sending the second comparison result to the processor so as to output a power supply abnormity alarm signal through the processor; wherein the first power supply is more sensitive to external interference than the second power supply.

Further, the method also comprises the following steps: a voltage and current monitoring module; the voltage and current monitoring module is respectively connected with the excitation module, the measurement module and the processor in the floating VI source board card; the voltage and current monitoring module is used for detecting first voltage and first current output by the excitation module and second voltage and second current measured by the measurement module, outputting a second abnormal result based on the first voltage, the first current, the second voltage and the second current, and sending the second abnormal result to the processor so as to output a voltage and current abnormal alarm signal through the processor.

Further, the voltage and current monitoring module comprises a voltage and current detection unit and a voltage and current clamping comparison unit which are connected with each other; the voltage and current clamp comparison unit is connected with the processor; the voltage and current detection unit is used for detecting a first voltage, a first current, a second voltage and a second current and sending the first voltage, the first current, the second voltage and the second current to the voltage and current clamp comparison unit; and the voltage and current clamp comparison unit is used for outputting a third comparison result when judging that at least one of the first voltage, the first current, the second voltage and the second current exceeds a corresponding clamp setting value, and sending the third comparison result to the processor so as to output a voltage and current abnormity alarm signal through the processor.

Further, the voltage and current monitoring module comprises a third comparator connected with the voltage and current detection unit; the third comparator is also connected with the processor and the digital-to-analog converter respectively; the voltage and current detection unit is used for sending the detected first voltage and second voltage to the third comparator; the digital-to-analog converter is used for converting a preset third threshold value into an analog signal; and the third comparator is used for outputting a fourth comparison result when the first voltage and/or the second voltage are/is judged to exceed a preset third threshold value, and sending the fourth comparison result to the processor so as to output a voltage overshoot abnormity alarm through the processor.

Further, the method also comprises the following steps: a line monitoring module; the line monitoring module is respectively connected with the excitation module, the measurement module and the processor in the floating VI source board card; the line monitoring module is used for detecting a first positive end voltage of the excitation module, a second positive end voltage of the measurement module and a negative end voltage of the measurement module, outputting a third abnormal result based on the first positive end voltage, the second positive end voltage and the negative end voltage, and sending the third abnormal result to the processor so as to output a line abnormity alarm signal through the processor.

Furthermore, the line monitoring module comprises a difference value operation module and a fourth comparator which are connected with each other; the fourth comparator is connected with the processor; the difference value operation module is used for calculating the difference value between the detected first positive terminal voltage and the second positive terminal voltage and sending the difference value to the fourth comparator; and the fourth comparator is used for outputting a fifth comparison result when the judgment difference value exceeds a preset fourth threshold value, and sending the fifth comparison result to the processor so as to output a line abnormity alarm signal through the processor.

Further, the line monitoring module comprises a fifth comparator; the fifth comparator is connected with the processor; and the fifth comparator is used for outputting a sixth comparison result when the voltage of the negative terminal of the measuring module exceeds a preset fifth threshold value, and sending the sixth comparison result to the processor so as to output a line abnormity alarm signal through the processor.

Further, the method also comprises the following steps: the temperature monitoring module is connected with a target element in the floating VI source board card and is also connected with the processor; the temperature monitoring module is used for detecting the temperature value of the target element, generating a temperature signal and sending the temperature signal to the processor; and the processor is used for outputting a temperature abnormity alarm signal when judging that the temperature signal exceeds a preset sixth threshold value.

The utility model provides a pair of VI source board card alarm system floats, including host computer, the VI source board card and the arbitrary unsteady VI source board card alarm device of the aforesaid of floating.

The utility model provides a VI source board card alarm device and system float, alarm device includes: the power supply monitoring module is respectively connected with the power supply module and the processor in the floating VI source board card; the power supply module comprises a first power supply; the power supply monitoring module comprises a preprocessing circuit, an analog-to-digital converter and a first comparator which are connected in sequence; the first power supply is connected with the preprocessing circuit; the preprocessing circuit is used for adjusting a first voltage of a first power supply; the analog-to-digital converter is used for converting the regulated first voltage from an analog signal to a digital signal to obtain an analog-to-digital conversion result; the first comparator is used for outputting a first comparison result when the analog-to-digital conversion result exceeds a preset first threshold value, and sending the first comparison result to the processor so as to output a power supply abnormity alarm signal through the processor. The device includes power monitoring module, can be used to monitor the first voltage of first power, when monitoring that first voltage is unusual, can export power unusual alarm signal through the treater to remind the user in time to investigate unusual problem, avoid appearing the problem that directly crashes, thereby can improve efficiency of software testing, reduce test loss.

Drawings

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

Fig. 1 is a schematic structural diagram of a floating VI source board card alarm device according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a power supply abnormality warning circuit according to an embodiment of the present invention;

fig. 3 is a schematic diagram of another power supply abnormality warning circuit provided in the embodiment of the present invention;

fig. 4 is a schematic structural diagram of another floating VI source board card alarm device according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a voltage/current anomaly alarm circuit provided in an embodiment of the present invention;

fig. 6 is a schematic diagram of an output voltage overshoot alarm circuit according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a circuit abnormality alarm circuit provided in an embodiment of the present invention;

fig. 8 is a schematic diagram of another circuit abnormality alarm circuit provided in the embodiment of the present invention;

fig. 9 is a schematic diagram of a temperature anomaly alarm circuit provided in an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a floating VI source board card alarm system according to an embodiment of the present invention.

Description of reference numerals: 10. a power supply module; 11. an excitation module; 12. a measurement module; 13. a power supply monitoring module; 14. a voltage and current monitoring module; 15. a line monitoring module; 16. a processor; 17. a temperature monitoring module; 20. a floating VI source board card alarm device; 30. an upper computer; 40. and (4) floating the VI source board card.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

An excitation is usually applied when an integrated circuit is tested, and then an output signal is detected, so that an excitation unit and a detection unit are arranged on an integrated circuit testing machine, a floating source testing board card can realize the functions of the excitation unit and the detection unit, various abnormal conditions may occur in the testing process because the floating source testing board card has output voltage/current with a wide adjustable range, in the related technology, the floating source testing board card lacks an alarm system, and the complete machine of a testing machine cannot work due to abnormal conditions, so that the testing efficiency is influenced, and the abnormal point positioning difficulty is high, for example, the power supply voltage of the board card falls abnormally, the output voltage/current cannot be clamped, overshoot and oscillation exist in output, the output circuit is in poor contact, the temperature of a core device is out of control, and the like, the problems may cause serious loss, such as the chip to be tested, the floating source testing board card may be damaged, and the testing machine may be damaged. Based on this, the embodiment of the utility model provides a VI source board card alarm device and system float, this technique can be applied to in the scene that needs float VI source board card to integrated circuit and carry out the alarm detection.

In order to facilitate understanding of the present embodiment, first, the floating VI source board alarm device disclosed in the embodiments of the present invention is described, as shown in fig. 1, the alarm device includes: the power supply monitoring module 13, the power supply monitoring module 13 is respectively connected with the power supply module 10 and the processor 16 in the floating VI source board card 40; the power supply module 10 includes a first power supply; referring to a schematic diagram of a power supply abnormality alarm circuit shown in fig. 2, a power supply monitoring module 13 includes a preprocessing circuit, an analog-to-digital converter, and a first comparator, which are connected in sequence; the first power supply is connected with the preprocessing circuit; the preprocessing circuit is used for adjusting a first voltage of a first power supply; the analog-to-digital converter is used for converting the regulated first voltage from an analog signal to a digital signal to obtain an analog-to-digital conversion result; the first comparator is used for outputting a first comparison result when the analog-to-digital conversion result exceeds a preset first threshold value, and sending the first comparison result to the processor 16, so that a power supply abnormity alarm signal is output through the processor 16, a user is reminded to timely troubleshoot an abnormity problem, and the direct downtime problem is avoided, thereby improving the testing efficiency and reducing the testing loss.

The floating VI source board 40 generally has a wide adjustable range of output voltage and output current, wherein the floating VI source board 40 includes the power module 10 and the processor 16; the power module 10 may provide power to various components in the floating VI source board card 40; the power supply system of the tester is complex, different output voltages are responded, a switching process can exist in a power supply rail, requirements on a power supply are high due to the characteristics of multiple channels in a board card, a multi-module circuit and the like, when the power supply voltage is abnormal, problems such as device damage, measurement errors and the like can be caused, therefore, the power supply voltage of the power supply module 10 needs to be monitored through the power supply monitoring module 13, when the power supply voltage is abnormal, a corresponding abnormal result can be output and sent to the processor 16, and a power supply abnormal alarm signal is output through the processor 16 to prompt an engineer or a tester to timely troubleshoot problems existing in the power supply module and ensure normal test. Usually, power supply alarming is realized by detecting the amplitude of power supply voltage, a plurality of power supply rails are arranged in a board card, and alarming is carried out when certain power supply rail voltage is abnormal.

The first power supply (not shown) may also be referred to as a sensitive power supply, which has a high sensitivity to external interference such as noise and is susceptible to power supply voltage fluctuation caused by the external interference; in practical implementation, some sensitive power supplies are not allowed to have fluctuation, and an alarm is needed if the sensitive power supplies have the fluctuation. Referring to fig. 2, a schematic diagram of a power supply abnormality alarm circuit may be used to monitor a power supply voltage with a high sensitivity, such as a power amplifier circuit power supply; supposing that the voltage output by the first power supply is V1, the voltage V1 is adjusted to be within a proper range through the preprocessing circuit, then the voltage is converted into a digital signal through the analog-digital converter and is sent to the first comparator, the first comparator judges whether the voltage converted into the digital signal exceeds a set threshold value, namely a first threshold value, if the voltage exceeds the threshold value, a first comparison result is output and sent to the processor 16, the processor 16 can output a corresponding power supply abnormity alarm signal according to the first comparison result, the alarm signal can indicate that the first power supply is abnormal, and the alarm signal can be sent to a connected upper computer for displaying.

Further, the power module 10 further includes a second power supply; the power monitoring module 13 further includes: the second comparator is respectively connected with the second power supply and the processor 16, and is used for outputting a second comparison result when judging that the second voltage of the second power supply exceeds a preset second threshold value, and sending the second comparison result to the processor 16 so as to output a power supply abnormity alarm signal through the processor 16; wherein the first power supply is more sensitive to external interference than the second power supply.

The second power supply may also be referred to as a non-sensitive power supply, and is less sensitive to external interference such as noise, less affected by the external interference, and generally less prone to power supply voltage fluctuation. Referring to another schematic diagram of the power supply abnormality alarm circuit shown in fig. 3, for an insensitive power supply, tolerable threshold voltage values of different power supply rails may be set to compare with corresponding power supply voltages, and assuming that the voltage output by the second power supply is V2, V3 \8230; \8230andvn, each voltage is input to a corresponding second comparator, where each second comparator is provided with a corresponding threshold voltage value, that is, the above-mentioned second threshold value, when the output voltage of any one or more second power supplies exceeds the corresponding threshold voltage value, a corresponding second comparison result may be output by the corresponding second comparator and sent to the processor 16, the processor 16 may output a corresponding power supply abnormality alarm signal according to the second comparison result, and the alarm signal may indicate that there is an abnormal second power supply, so that a user may troubleshoot an abnormal problem, and may send the alarm signal to a connected upper computer for display.

In an embodiment, as shown in fig. 4, a schematic structural diagram of another floating VI source board card alarm device, the alarm device further includes: a voltage current monitoring module 14; the voltage and current monitoring module 14 is respectively connected with the excitation module 11, the measurement module 12 and the processor 16 in the floating VI source board 40; the voltage and current monitoring module 14 is configured to detect the first voltage and the first current output by the excitation module 11, and the second voltage and the second current measured by the measurement module 12, output a second abnormal result based on the first voltage, the first current, the second voltage, and the second current, and send the second abnormal result to the processor 16, so as to output a voltage and current abnormal alarm signal through the processor 16.

Specifically, when a four-wire system is adopted for measurement, the floating VI source board card 40 further includes an excitation module 11 and a measurement module 12, the excitation module 11 and the measurement module 12 are respectively connected with an external element to be measured, the excitation module 11 can provide output voltage and output current for the element to be measured, and the measurement module 12 can measure voltage and current at two ends of the element to be measured; the device under test may be a chip under test or an integrated circuit module.

When a chip to be tested is tested, if no clamp alarm exists, when an abnormal chip occurs, an overcurrent/overvoltage damage chip may exist, in the scheme, a first voltage and a first current output by an excitation module 11 can be monitored through a voltage and current monitoring module 14, and a second voltage and a second current measured by a measurement module 12 can be monitored, for example, when any one of the parameters is abnormal, a corresponding abnormal result can be output and sent to a processor 16, and an abnormal voltage alarm signal, an abnormal current alarm signal or an abnormal voltage and current alarm signal is output through the processor 16, so that an engineer or a tester is prompted to timely troubleshoot the problems existing in the excitation module 11 and/or the measurement module 12, and the normal test is ensured.

Further, the voltage and current monitoring module 14 includes a voltage and current detection unit and a voltage and current clamp comparison unit connected to each other; the voltage-current clamp comparison unit is connected with the processor 16; the voltage and current detection unit is used for detecting a first voltage, a first current, a second voltage and a second current and sending the first voltage, the first current, the second voltage and the second current to the voltage and current clamp comparison unit; the voltage-current clamp comparison unit is used for outputting a third comparison result when at least one of the first voltage, the first current, the second voltage and the second current is judged to exceed the corresponding clamp setting value, and sending the third comparison result to the processor 16 so as to output a voltage-current abnormity alarm signal through the processor 16.

In a chip test, if there is no clamp alarm, there may be an overcurrent and/or an overvoltage damage chip when an abnormal chip occurs, referring to a schematic diagram of a voltage-current abnormality alarm circuit shown in fig. 5, the voltage-current detection unit may connect an output terminal (two terminals HF and LF) of the excitation module 11 and an output terminal (two terminals HS and LS) of the measurement module 12 to detect a first voltage and a first current output by the excitation module 11, and a second voltage and a second current measured by the measurement module 12, and send the detected first voltage, first current, second voltage, and second current to the voltage-current clamp comparison unit, and when the implementation is specific, the voltage-current clamp comparison unit may integrate a plurality of comparators to respectively compare the first voltage, first current, second voltage, and second current with respective corresponding clamp values (corresponding to the third threshold), and if one or more of the first voltage, the first current, the second voltage, the second current, and the respective clamp values exceed the corresponding clamp setting values, clamp and output a clamp result, and send the comparison result to the processor 16, and the processor 16 may output a corresponding alarm signal to indicate that the abnormal voltage or the abnormal current is connected, and display an abnormal alarm signal.

Further, the voltage current monitoring module 14 includes a third comparator connected to the voltage current detection unit; the third comparator is also connected to the processor 16 and the digital-to-analog converter, respectively; the voltage and current detection unit is used for sending the detected first voltage and second voltage to the third comparator; the digital-to-analog converter is used for converting a preset third threshold value into an analog signal; the third comparator is used for outputting a fourth comparison result when the first voltage and/or the second voltage is judged to exceed a preset third threshold value, and sending the fourth comparison result to the processor 16 so as to output a voltage overshoot abnormity alarm through the processor 16.

If there is overshoot or oscillation in the output of the floating VI source board card 40, which may have a large impact on the load test, as shown in fig. 6, in a schematic diagram of an output voltage overshoot alarm circuit, a preset threshold (corresponding to the third threshold) is input to one input end of a third comparator through a digital-to-analog converter, and another input end of the third comparator is a signal monitored by the voltage and current monitoring module 14, when a first voltage output by the monitored excitation module 11 and/or a second voltage measured by the measurement module 12 exceed the threshold, it is proved that there may be oscillation, overshoot, etc. in the output, and the third comparator may output an abnormal signal, and at this time, the processor 16 captures the abnormal signal, outputs an alarm of abnormal voltage overshoot, and may send the alarm signal to a connected upper computer for display. It should be noted that the overshoot detection does not need to detect the specific value of the voltage and the current, and an alarm is triggered as long as the specific value exceeds a preset threshold value in a hardware manner; and the voltage and current abnormity alarm needs to acquire actual voltage and current specific values, and the actual voltage and current specific values are compared through software.

Further, as shown in fig. 4, the alarm device further includes: a line monitoring module 15; the line monitoring module 15 is respectively connected with the excitation module 11, the measurement module 12 and the processor 16 in the floating VI source board card 40; the line monitoring module 15 is configured to detect a first positive end voltage of the excitation module 11, a second positive end voltage of the measurement module 12, and a negative end voltage of the measurement module 12, output a third anomaly result based on the first positive end voltage, the second positive end voltage, and the negative end voltage, and send the third anomaly result to the processor 16, so as to output a line anomaly alarm signal through the processor 16.

When a four-wire system test is adopted, the excitation module 11 corresponds to an excitation wire, and the corresponding test ends are an excitation wire positive end (corresponding to the first positive end voltage) and an excitation wire negative end; the measuring module 12 has a corresponding detecting line, and the corresponding detecting line has a positive end (corresponding to the second positive end voltage) and a negative end (corresponding to the negative end voltage); for convenience of description, the positive end of the excitation line is represented by HF, the negative end of the excitation line is represented by LF, the positive end of the detection line is represented by HS, the negative end of the detection line is represented by LS, voltages of HF and HS are approximately equal during four-wire system measurement, voltages of LF and LS are approximately equal, abnormal conditions such as poor contact or broken/unconnected may exist in actual conditions, and the conditions can affect the test of load characteristics.

Further, the line monitoring module 15 includes a difference operation module and a fourth comparator connected to each other; the fourth comparator is connected with the processor 16; the difference value operation module is used for calculating the difference value between the detected first positive terminal voltage and the second positive terminal voltage and sending the difference value to the fourth comparator; the fourth comparator is configured to output a fifth comparison result when the difference value exceeds the preset fourth threshold value, and send the fifth comparison result to the processor 16, so as to output a line anomaly alarm signal through the processor 16.

During the four-wire system measurement, the voltages of the excitation line positive terminal HF of the excitation module 11 and the detection line positive terminal HS of the measurement module 12 are approximately equal, the voltages of the excitation line negative terminal LF of the excitation module 11 and the detection line negative terminal LS of the measurement module 12 are approximately equal, and in actual situations, there may be abnormal situations such as poor contact or disconnection/disconnection, which all affect the test of load characteristics. Referring to the schematic diagram of the circuit for alarming circuit for circuit abnormality shown in fig. 7, the difference operation module may calculate a voltage difference between a first positive terminal voltage (HF) of the excitation module 11 and a second positive terminal voltage (HS) of the measurement module 12, compare the voltage difference with a preset threshold voltage (corresponding to the fourth threshold) by a fourth comparator, and output a fifth comparison result and send the fifth comparison result to the processor 16 when the voltage difference is judged to exceed the preset threshold voltage; the processor 16 may output a corresponding line anomaly alarm signal according to the fifth comparison result, and the alarm signal may indicate that the line of the excitation module 11 or the line of the measurement module 12 is anomalous, and may be sent to a connected upper computer for displaying.

Further, the line monitoring module 15 includes a fifth comparator; the fifth comparator is connected with the processor 16; the fifth comparator is configured to output a sixth comparison result when it is determined that the voltage of the negative terminal of the measurement module 12 exceeds a preset fifth threshold, and send the sixth comparison result to the processor 16, so as to output a line anomaly alarm signal through the processor 16.

Referring to another schematic diagram of the circuit abnormality alarm circuit shown in fig. 8, a negative terminal voltage (LS) of the measurement module 12 is input to a fifth comparator, the fifth comparator compares the negative terminal voltage with a preset threshold voltage (corresponding to the fifth threshold), and when the negative terminal voltage exceeds the preset threshold, a sixth comparison result is output and sent to the processor 16; the processor 16 may output a corresponding line anomaly alarm signal according to the sixth comparison result, and the alarm signal may indicate that the line of the excitation module 11 or the line of the measurement module 12 is anomalous, and may be sent to a connected upper computer for displaying.

Further, as shown in fig. 4, the alarm device further includes: the temperature monitoring module 17 is connected with a target element in the floating VI source board card 40, and the temperature monitoring module 17 is also connected with the processor 16; the temperature monitoring module 17 is configured to detect a temperature value of the target element, generate a temperature signal, and send the temperature signal to the processor 16; the processor 16 is configured to output a temperature abnormality alarm signal when determining that the temperature signal exceeds a preset sixth threshold.

The target element includes at least one of: the device comprises a main control chip and a power semiconductor device. The main control chip is usually the core for controlling the operation of the equipment; this power semiconductor device is used for electric energy conversion and control circuit usually, can be power amplifier circuit's MOSFET pipe, IGBT (Insulated Gate Bipolar Transistor), insulated Gate Bipolar Transistor) etc. temperature alarm can be realized through a plurality of temperature monitoring module 17, can include interconnect's temperature sensor and temperature comparator among the above-mentioned temperature monitoring module 17, and when actual implementation, can press close to key components and parts with temperature sensor, if place on key components and parts. Referring to the schematic diagram of the temperature anomaly alarm circuit shown in fig. 9, the temperature sensor collects the temperature value of the key component and generates a temperature signal, specifically, the temperature value can be converted into an electrical signal, the generated temperature signal is sent to the processor 16, the processor 16 compares the temperature signal with a preset threshold temperature (corresponding to the sixth threshold), when the temperature exceeds the threshold temperature, a corresponding temperature anomaly alarm signal is output, the component with abnormal temperature can be indicated through the alarm signal, and the alarm signal can be sent to a connected upper computer for displaying.

The utility model provides a pair of VI source board card alarm system floats, as shown in fig. 10, including host computer 30, the VI source board card 40 that floats to and the VI source board card alarm device 20 that floats of above-mentioned arbitrary item.

Specifically, the floating VI source board card 40 is connected to the floating VI source board card alarm device 20 and the upper computer 30 respectively; the floating VI source board alarm device 20 is configured to monitor an abnormal signal in the floating VI source board 40, send the abnormal signal to the processor 16 in the floating VI source board 40, output an abnormal alarm signal through the processor 16, and send the abnormal alarm signal to the upper computer 30; wherein, unusual alarm signal includes: a power supply abnormity alarm signal, a voltage and current abnormity alarm signal and a line abnormity alarm signal; the upper computer 30 is used for displaying the abnormal alarm signal.

In actual implementation, the processor 16 in the floating VI source board 40 may be in communication connection with the upper computer 30 through the bus, and the user may set a related alarm parameter through the upper computer 30, such as a threshold value, so as to flexibly implement an alarm function, the floating VI source board 40 feeds back to the upper computer 30 through the bus during an abnormal alarm, and may prompt the user to handle an abnormal problem in time through modes such as an alarm indicator light or an alarm prompt tone, so as to avoid the problem that the whole testing machine is down.

A power supply system, an excitation unit and a detection unit are arranged in the floating VI source board card 40; the early warning of the warning system comprises 5 parts in total, namely temperature monitoring warning, excitation/detection line abnormity warning, output voltage and current clamping warning, power supply warning and output oscillation/overshoot warning. The alarm is realized through a plurality of monitoring units, and the temperature monitoring module 17 monitors the sensitive temperature points in the floating VI source board card 40, so that the alarm is given when abnormality occurs. The power monitoring module 13 monitors the sensitive power supply inside the floating VI source board 40, and gives an alarm when an abnormality occurs. The current and voltage monitoring module carries out clamping alarm on the output voltage and current, alarms when the output voltage and current exceed a clamping value, and can detect output voltage oscillation to carry out overshoot alarm. The line monitoring module 15 performs line detection alarm, and alarms when the detection line of the excitation line/measurement module 12 of the excitation module 11 is abnormal. The system provides an abnormity alarm system suitable for the integrated circuit floating power supply test board, can perform early warning on various abnormal problems in the test process, reduces the difficulty in troubleshooting the working abnormal problems of the floating VI source board 40, can reduce the risk to the minimum, and simultaneously reduces the troubleshooting cost of the abnormal problems.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. The utility model provides a VI source board card alarm device floats which characterized in that includes: the power supply monitoring module is respectively connected with the power supply module and the processor in the floating VI source board card; the power module comprises a first power supply; the power supply monitoring module comprises a preprocessing circuit, an analog-to-digital converter and a first comparator which are connected in sequence; the first power supply is connected with the preprocessing circuit;

the pre-processing circuit is used for adjusting a first voltage of the first power supply;

the analog-to-digital converter is used for converting the regulated first voltage from an analog signal to a digital signal to obtain an analog-to-digital conversion result;

the first comparator is used for outputting a first comparison result when the analog-to-digital conversion result is judged to exceed a preset first threshold value, and sending the first comparison result to the processor so as to output a power supply abnormity alarm signal through the processor.

2. The apparatus of claim 1, wherein the power module further comprises a second power source; the power monitoring module further comprises:

the second comparator is respectively connected with the second power supply and the processor and used for outputting a second comparison result when judging that the second voltage of the second power supply exceeds a preset second threshold value, and sending the second comparison result to the processor so as to output a power supply abnormity alarm signal through the processor;

wherein the first power supply is more sensitive to external interference than the second power supply.

3. The apparatus of claim 1, further comprising: a voltage and current monitoring module; the voltage and current monitoring module is respectively connected with an excitation module, a measurement module and the processor in the floating VI source board card;

the voltage and current monitoring module is used for detecting a first voltage and a first current output by the excitation module, outputting a second abnormal result based on the first voltage, the first current, the second voltage and the second current, and outputting a voltage and current abnormal alarm signal through the processor, wherein the second abnormal result is measured by the measurement module and sent to the processor.

4. The apparatus of claim 3, wherein the voltage-current monitoring module comprises a voltage-current detection unit and a voltage-current clamp comparison unit connected to each other; the voltage-current clamp comparison unit is connected with the processor;

the voltage and current detection unit is used for detecting the first voltage, the first current, the second voltage and the second current and sending the detected voltages, currents and currents to the voltage and current clamp comparison unit;

the voltage-current clamp comparison unit is used for outputting a third comparison result when at least one of the first voltage, the first current, the second voltage and the second current is judged to exceed a corresponding clamp set value, and sending the third comparison result to the processor so as to output the voltage-current abnormity alarm signal through the processor.

5. The apparatus of claim 4, wherein the voltage and current monitoring module comprises a third comparator connected to the voltage and current detection unit; the third comparator is also connected with the processor and the digital-to-analog converter respectively;

the voltage and current detection unit is used for sending the detected first voltage and the second voltage to the third comparator; the digital-to-analog converter is used for converting a preset third threshold value into an analog signal;

and the third comparator is used for outputting a fourth comparison result when judging that the first voltage and/or the second voltage exceed the preset third threshold value, and sending the fourth comparison result to the processor so as to output a voltage overshoot abnormity alarm through the processor.

6. The apparatus of claim 1, further comprising: a line monitoring module; the line monitoring module is respectively connected with the excitation module, the measurement module and the processor in the floating VI source board card;

the line monitoring module is used for detecting a first positive end voltage of the excitation module, a second positive end voltage of the measurement module and a negative end voltage of the measurement module, outputting a third abnormal result based on the first positive end voltage, the second positive end voltage and the negative end voltage, and sending the third abnormal result to the processor so as to output a line abnormity alarm signal through the processor.

7. The apparatus of claim 6, wherein the line monitoring module comprises a difference operation module and a fourth comparator connected to each other; the fourth comparator is connected with the processor;

the difference operation module is configured to calculate a difference between the detected first positive terminal voltage and the detected second positive terminal voltage, and send the difference to the fourth comparator;

and the fourth comparator is used for outputting a fifth comparison result when judging that the difference value exceeds a preset fourth threshold value, and sending the fifth comparison result to the processor so as to output a line abnormity alarm signal through the processor.

8. The apparatus of claim 6, wherein the line monitoring module comprises a fifth comparator; the fifth comparator is connected with the processor;

and the fifth comparator is used for outputting a sixth comparison result when judging that the voltage of the negative end of the measuring module exceeds a preset fifth threshold value, and sending the sixth comparison result to the processor so as to output a line abnormity alarm signal through the processor.

9. The apparatus of claim 1, further comprising: the temperature monitoring module is connected with a target element in the floating VI source board card and is also connected with the processor;

the temperature monitoring module is used for detecting the temperature value of the target element, generating a temperature signal and sending the temperature signal to the processor;

and the processor is used for outputting a temperature abnormity alarm signal when judging that the temperature signal exceeds a preset sixth threshold value.

10. A floating VI source board card alarm system, comprising an upper computer, a floating VI source board card and the floating VI source board card alarm device of any one of claims 1-9.

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