Power consumption test device

Abstract

The utility model relates to the field of test circuits, and in particular to a power consumption test device. The power consumption test device comprises: a plurality of test units, wherein the input end of each test unit is coupled to one of a plurality of circuits to be tested, and the voltage data and current data of the circuit to be tested coupled thereto are synchronously collected through an acquisition channel with a synchronous trigger function; a power supply unit, which is used to supply power to each circuit to be tested; and a control unit, which sends control instructions to the plurality of test units through Ethernet and receives the voltage and current data reported by the plurality of test units.

Description

Technical Field

[0001] The utility model relates to the field of test circuits, and in particular to a power consumption test device. Background Art

[0002] At present, circuit power consumption testing has not been automated. Testers usually need to operate test equipment at the test site to collect and record power consumption data. If batch sample testing is involved, pure manual testing is inefficient, has large errors, and cannot guarantee test consistency, nor can it achieve test process control based on automated scripts. In addition, the voltage and current data of the same power network cannot be collected synchronously, which may have little impact on the power consumption calculation of the steady-state process, but for the dynamic process, the calculated power consumption has poor accuracy and cannot reflect the actual working state of the circuit. Utility Model Content

[0003] In order to solve or at least alleviate one or more of the above problems, the following technical solutions are provided: The utility model provides a power consumption test device, which can improve the efficiency of batch sample testing and improve the accuracy of power consumption testing.

[0004] According to one aspect of the utility model, a power consumption testing device is provided, which includes: a plurality of test units, wherein the input end of each test unit is coupled to one of a plurality of circuits to be tested, and the voltage data and current data of the circuit to be tested coupled thereto are synchronously collected through an acquisition channel with a synchronous trigger function; a power supply unit, which is used to supply power to each circuit to be tested; and a control unit, which sends control instructions to the plurality of test units via Ethernet and receives the voltage and current data reported by the plurality of test units.

[0005] As an alternative or supplement to the above solution, the power consumption testing device according to an embodiment of the utility model further includes a temperature control box, wherein the multiple circuits to be tested are placed in the temperature control box, and the temperature control box is used to provide a target temperature for the multiple circuits to be tested.

[0006] As an alternative or supplement to the above solution, in a power consumption testing device according to an embodiment of the present invention, one or more test units among the multiple test units send the target temperature to the temperature control box via a USB interface or an Ethernet interface.

[0007] As an alternative or supplement to the above solution, in a power consumption testing device according to an embodiment of the present invention, one or more of the multiple testing units include a temperature sensor, and the temperature sensor is used to collect the ambient temperature of the circuit to be tested.

[0008] As an alternative or supplement to the above solution, in a power consumption testing device according to an embodiment of the utility model, the control unit is configured to control the target temperature of the temperature control box based at least on the ambient temperature collected by the testing unit.

[0009] As an alternative or supplement to the above scheme, in a power consumption testing device according to one embodiment of the utility model, one or more test units among the multiple test units send the target voltage or target current to the power supply unit through a USB interface or an Ethernet interface, and the power supply unit provides an output voltage or output current to the multiple circuits to be tested according to the target voltage or target current.

[0010] As an alternative or supplement to the above scheme, in a power consumption testing device according to an embodiment of the utility model, the acquisition channel with a synchronous trigger function includes: a first ADC acquisition channel for acquiring current data of the circuit to be tested, and a second ADC acquisition channel for acquiring voltage data of the circuit to be tested, wherein the first ADC acquisition channel and the second ADC acquisition channel use the same timer as a trigger source.

[0011] As an alternative or supplement to the above solution, in a power consumption testing device according to an embodiment of the utility model, the acquisition channel of the test unit also includes one or more of an integrated circuit bus channel, a serial peripheral interface channel, and a universal asynchronous receiver and transmitter channel.

[0012] As an alternative or supplement to the above solution, in a power consumption testing device according to an embodiment of the present invention, the control instruction sent by the control unit includes a channel selection instruction for enabling one or more of the acquisition channels of the test unit.

[0013] As an alternative or supplement to the above scheme, in a power consumption testing device according to one embodiment of the utility model, the control unit is also used to: determine the power consumption of the circuit to be tested based on the voltage and current data; and / or draw one or more of the voltage change curve, current change curve, and power consumption change curve of the circuit to be tested based on the voltage and current data.

[0014] As an alternative or supplement to the above scheme, in a power consumption testing device according to an embodiment of the utility model, the control unit is also used to: send control instructions to the multiple test units according to the stored test program to realize an automated test process for the circuit to be tested.

[0015] As an alternative or supplement to the above solution, in a power consumption testing device according to an embodiment of the utility model, the testing unit is a micro control unit.

[0016] On the one hand, the power consumption test device according to one or more embodiments of the utility model has multiple test channels, which can simultaneously access multiple circuits to be tested, thereby improving the efficiency of batch sample testing. On the other hand, the power consumption test device according to one or more embodiments of the utility model can synchronously collect voltage data and current data of the circuit to be tested through an acquisition channel with a synchronous trigger function, thereby improving the accuracy of power consumption testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or other aspects and advantages of the present invention will become clearer and easier to understand through the following description in conjunction with the accompanying drawings, in which the same or similar units are represented by the same reference numerals. The accompanying drawings include:

[0018] Figure 1 A schematic block diagram showing a power consumption testing device 10 according to one or more embodiments of the present utility model is shown; and

[0019] Figure 2 A schematic block diagram of a power consumption testing device 20 according to one or more embodiments of the present utility model is shown. DETAILED DESCRIPTION

[0020] In this specification, the utility model is more fully described with reference to the accompanying drawings in which illustrative embodiments of the utility model are illustrated. However, the utility model can be implemented in different forms and should not be interpreted as being limited to the embodiments given herein. The embodiments given are intended to make the disclosure herein comprehensive and complete, so as to more fully convey the scope of protection of the utility model to those skilled in the art.

[0021] Terms such as "comprising" and "including" indicate that in addition to the units and steps directly and clearly stated in the specification and claims, the technical solution of the utility model does not exclude the situation of having other units and steps that are not directly or clearly stated. Terms such as "first" and "second" do not indicate the order of units in terms of time, space, size, etc., but are only used to distinguish between units.

[0022] Hereinafter, various exemplary embodiments according to the present utility model will be described in detail with reference to the accompanying drawings. Figure 1 , Figure 1 A schematic block diagram of a power consumption testing device 10 according to one or more embodiments of the present utility model is shown.

[0023] like Figure 1 As shown, the power consumption test device 10 includes a plurality of test units 110 , a power supply unit 120 , and a control unit 130 . Optionally, the power consumption test device 10 further includes a temperature control box 140 .

[0024] The power supply unit 120 is electrically coupled to the plurality of circuits under test to supply power to each circuit under test. Exemplarily, the power supply unit 120 may be an adjustable power supply, such as an adjustable DC power supply or an adjustable AC power supply. In one embodiment, the power supply unit 120 may adjust the output voltage, output current, or output power supplied to each circuit under test according to an instruction (e.g., an instruction from the test unit 110 or the control unit 130).

[0025] Multiple circuits to be tested may be placed in the temperature control box 140, which provides a target temperature to the circuits to be tested. For example, the target temperature may be a preset constant temperature or a variable temperature adjusted according to an instruction (e.g., an instruction from the test unit 110 or the control unit 130).

[0026] Figure 1 The power consumption test device 10 may include multiple test channels (e.g., a first test channel, a second test channel, ..., an Nth test channel, where N is a positive integer greater than or equal to 2), the input end of each test channel is coupled to a circuit to be tested, and each test channel includes a corresponding test unit 110 (e.g., a test unit in the first test channel, a test unit in the second test channel, ..., a test unit in the Nth test channel). Exemplarily, the test unit 110 is a microcontroller unit (MCU). The test unit 110 is used to collect voltage data and current data of the circuit to be tested coupled thereto, so as to implement test functions associated with voltage and current, such as power consumption testing, startup / dynamic / shutdown performance testing, short circuit diagnosis and protection, over-temperature diagnosis and protection, load startup, self-test, etc. In one embodiment, the test unit 110 may also include a temperature sensor for collecting the ambient temperature of the circuit to be tested coupled thereto.

[0027] It should be noted that the current power consumption test device cannot synchronously collect the voltage and current data of the same power supply network, and the phase error between the voltage and current collection will cause the error of power calculation, so there is a pain point of low power consumption measurement accuracy. In this regard, the utility model proposes to set a collection channel synchronization with a synchronous trigger function in each test unit 110 to synchronously collect the voltage data and current data of the circuit to be tested coupled to the test unit 110, thereby improving the accuracy of power consumption calculation. Specifically, in one embodiment, the collection channel with a synchronous trigger function includes a first ADC (analog-to-digital converter) collection channel for collecting current data of the circuit to be tested and a second ADC collection channel for collecting voltage data of the circuit to be tested, wherein the first ADC collection channel and the second ADC collection channel use the same timer as a trigger source, so that the trigger signal generated by the timer reaches the ADCs of the two ADC collection channels at the same time, and the two ADCs are sampled at the same time after receiving the trigger signal. In another embodiment, the test unit 110 can also use the collection channel with a synchronous trigger function to synchronously collect the ambient temperature, voltage and current data of the circuit to be tested coupled thereto. Furthermore, in addition to the acquisition channel with synchronous triggering function, other acquisition channels may be provided in the test unit 110, for example, an integrated circuit bus (I2C) channel, a serial peripheral interface (SPI) channel, and a universal asynchronous receiver / transmitter (UART) channel.

[0028] The control unit 130 can send control instructions to the test unit 110 via Ethernet, such as acquisition channel selection instructions, configuration instructions (such as test chip configuration instructions), network connection configuration instructions, target temperature setting instructions, target voltage setting instructions, target current setting instructions, etc., and receive acquisition data reported by the test unit 110 via Ethernet, such as ambient temperature, voltage and current data.

[0029] In one embodiment, the control unit 130 first sends a target temperature setting instruction to the test unit 110. In response to receiving the target temperature setting instruction from the control unit 130, the test unit 110 uses a temperature sensor to collect the ambient temperature of the circuit to be tested. Exemplarily, if the collected ambient temperature is inconsistent with the target temperature indicated by the target temperature setting instruction, the test unit 110 can send the target temperature to the temperature control box 140 via a USB interface or an Ethernet interface.

[0030] In one embodiment, the control unit 130 may also send a target voltage setting instruction and / or a target current setting instruction to the test unit 110. In response to receiving the target voltage setting instruction and / or the target current setting instruction from the control unit 130, the test unit 110 sends the target voltage and / or the target current indicated by the instruction to the power supply unit 120, so that the power supply unit 120 can adjust the output voltage and / or the output current provided to the circuit under test according to the target voltage and / or the target current.

[0031] In one embodiment, the control unit 130 can display the waveforms of the voltage, current, power consumption, and ambient temperature of each acquisition channel in real time according to the acquisition data reported by the test unit 110, and further analyze and store the acquisition data. Specifically, the control unit 130 can determine the power consumption of the circuit under test based on the voltage and current data, and draw one or more of the voltage change curve, current change curve, and power consumption change curve of the circuit under test based on the voltage, current, and power consumption data.

[0032] In one embodiment, the power consumption test device 10 further includes an alarm unit. If the ambient temperature is greater than the first threshold, the control unit 130 will send an enable signal to the alarm unit, and the alarm unit will send an alarm signal (e.g., voice prompt, light signal) in response to receiving the enable signal to prompt the tester to adjust the target current or target voltage in time to prevent component damage caused by overtemperature.

[0033] In one embodiment, the control unit 130 has preset test programs for different circuits to be tested, and can send control instructions to each test unit 110 according to the stored test programs to implement an automated test process for the circuits to be tested.

[0034] Continue to refer to Figure 2 , Figure 2 A schematic block diagram of a power consumption testing device 20 according to one or more embodiments of the present utility model is shown.

[0035] exist Figure 2 In the illustrated embodiment, the power consumption test device 20 is shown to include two test channels for the circuit under test 30 and the circuit under test 40, and the input ends of the two test channels are respectively coupled to the circuit under test 30 and the circuit under test 40 through acquisition lines. It should be understood that the power consumption test device 20 may also include more test channels and may be connected to more circuits under test in the same manner.

[0036] like Figure 2As shown, the two test channels are respectively arranged with test units 210A and 210B, and the test units 210A and 210B are respectively connected to the circuit to be tested 30 and the circuit to be tested 40 via acquisition lines. The circuit to be tested 30 and the circuit to be tested 40 are arranged in a temperature control box 240. The test unit 210A controls the power supply unit 220 through a USB interface, for example, sends a target voltage and / or a target current to the power supply unit 220, so that the power supply unit 120 can adjust the output voltage and / or output current provided to the circuits to be tested 30 and 40 according to the target voltage and / or the target current. The test unit 210B controls the temperature control box 240 through a USB interface. For example, if the collected ambient temperature is inconsistent with the target temperature indicated by the target temperature setting instruction issued by the control unit 230, the test unit 210B can send the target temperature to the temperature control box 240 through the USB interface, so as to change the ambient temperature in the temperature control box 240 to the target temperature.

[0037] The two test units 210A, 210B and the control unit 230 form an Ethernet network through the switch 250. The control unit 230 can communicate with the test units 210A, 210B using the User Datagram Protocol (UDP), for example, to issue instructions and receive data.

[0038] The two test units 210A and 210B are both provided with a synchronous acquisition channel with a synchronous trigger function, so as to synchronously acquire the voltage data and current data of the circuit to be tested coupled with the test units 210A and 210B, thereby improving the accuracy of the power consumption calculation. Specifically, the test unit 210A has a first ADC acquisition channel for acquiring the current data of the circuit to be tested and a second ADC acquisition channel for acquiring the voltage data of the circuit to be tested, wherein the first ADC acquisition channel and the second ADC acquisition channel use the same timer as a trigger source, so that the trigger signal generated by the timer reaches the ADCs of the two ADC acquisition channels at the same time, and the two ADCs immediately perform sampling at the same time after receiving the trigger signal. The test unit 210B has a first ADC acquisition channel for acquiring the current data of the circuit to be tested, a second ADC acquisition channel for acquiring the voltage data of the circuit to be tested, and a third ADC acquisition channel for acquiring the ambient temperature of the circuit to be tested, wherein the first ADC acquisition channel, the second ADC acquisition channel and the third ADC acquisition channel use the same timer as a trigger source. Other acquisition channels may also be provided in the test units 210A and 210B, for example, an I2C channel, an SPI channel, a UART channel, etc. The control unit 230 sends an acquisition channel selection instruction to the test units 210A and 210B through Ethernet to enable one or more acquisition channels of the test units 210A and 210B.

[0039] The control unit 230 can display the waveforms of voltage, current, power consumption, and ambient temperature of each acquisition channel in real time according to the acquisition data reported by the test units 210A and 210B, and further analyze and store the acquisition data.

[0040] First, the power consumption test device (10, 20) according to one or more embodiments of the utility model has multiple test channels, which can simultaneously access multiple circuits to be tested, thereby improving the efficiency of batch sample testing and reducing test preparation time. In addition, the power consumption test device (10, 20) according to one or more embodiments of the utility model can synchronously collect voltage data and current data of the circuit to be tested through an acquisition channel with a synchronous trigger function, thereby improving the accuracy of power consumption testing. Finally, based on the control unit, an automated test process for the circuit to be tested is implemented, avoiding the problems of low efficiency, large error, and poor consistency of manual testing.

[0041] The foregoing disclosure is not intended to limit the disclosure to the precise form disclosed or to the particular field of use. Therefore, it is contemplated that various alternative embodiments and / or modifications of the disclosure are possible in light of the present disclosure, whether explicitly described or implied herein. Having thus described embodiments of the disclosure, it will be appreciated by those of ordinary skill in the art that changes may be made in form and detail without departing from the scope of the disclosure. Therefore, the disclosure is limited only by the claims.

Claims

1. A power consumption test device, characterized in that: The power consumption test device comprises: A plurality of test units, wherein the input end of each test unit is coupled to one of the plurality of circuits to be tested, and the voltage data and the current data of the circuit to be tested coupled thereto are synchronously collected through an acquisition channel with a synchronous trigger function; a power supply unit, which is used to supply power to each circuit to be tested; and A control unit sends control instructions to the multiple test units through Ethernet and receives the voltage and current data reported by the multiple test units.

2. The power consumption test device according to claim 1, characterized in that: The power consumption testing device further comprises a temperature control box, wherein the plurality of circuits to be tested are placed in the temperature control box, and the temperature control box is used to provide a target temperature for the plurality of circuits to be tested.

3. The power consumption test device according to claim 2, characterized in that: One or more test units among the multiple test units send the target temperature to the temperature control box through a USB interface or an Ethernet interface.

4. The power consumption test device according to claim 1, characterized in that: One or more of the plurality of test units include a temperature sensor, and the temperature sensor is used to collect the ambient temperature of the circuit to be tested.

5. The power consumption test device according to claim 4, characterized in that: The control unit is configured to control a target temperature of the temperature control box based at least on the ambient temperature collected by the test unit.

6. The power consumption test device according to claim 1, characterized in that: One or more of the multiple test units send a target voltage or a target current to the power supply unit via a USB interface or an Ethernet interface, and the power supply unit provides an output voltage or an output current to the multiple circuits under test according to the target voltage or the target current.

7. The power consumption test device according to claim 1, characterized in that: The acquisition channel with synchronous trigger function includes: a first ADC acquisition channel for acquiring current data of the circuit to be tested, and A second ADC acquisition channel for acquiring voltage data of the circuit to be tested, The first ADC acquisition channel and the second ADC acquisition channel use the same timer as a trigger source.

8. The power consumption test device according to claim 1, characterized in that: The acquisition channel of the test unit also includes one or more of an integrated circuit bus channel, a serial peripheral interface channel, and a universal asynchronous receiver and transmitter channel.

9. The power consumption test device according to claim 1, characterized in that: The control instruction sent by the control unit includes a channel selection instruction for enabling one or more acquisition channels of the test unit.

10. The power consumption test device according to claim 1, characterized in that: The control unit is also used for: determining the power consumption of the circuit under test based on the voltage and current data; and / or One or more of a voltage change curve, a current change curve, and a power consumption change curve of the circuit to be tested are drawn based on the voltage and current data.

11. The power consumption test device according to claim 1, characterized in that: The control unit is further used to send control instructions to the multiple test units according to the stored test program to implement an automated test process for the circuit to be tested.

12. The power consumption test device according to claim 1, characterized in that: The testing unit is a micro control unit.

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