CN213041959U - Vacuum contactor synchronous tester - Google Patents
Vacuum contactor synchronous tester Download PDFInfo
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- CN213041959U CN213041959U CN202021424010.5U CN202021424010U CN213041959U CN 213041959 U CN213041959 U CN 213041959U CN 202021424010 U CN202021424010 U CN 202021424010U CN 213041959 U CN213041959 U CN 213041959U
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Abstract
The utility model relates to a vacuum contactor synchronous tester, include: the switching-on and switching-off control circuit comprises a switching-on and switching-off coil power supply alternating current and direct current power supply, a program-controlled amplifying circuit unit, a switching-on and switching-off power transmission control signal unit, a current sensor, a voltage sensor, a main contact isolation channel and an auxiliary contact isolation channel, wherein a CPU (central processing unit) outputs a switching-on and switching-off control signal and receives a current signal, a voltage signal and contact data for processing; by means of the built-in numerical control direct current power supply and the built-in numerical control alternating current power supply, the testing of alternating current contactors and direct current contactors can be compatible, and the contactors with various power sizes and coil types can be met; testing of contactors compatible with electrical retention and self-latching; the testing device has the testing capability of the auxiliary contact, and can test the matching time of the auxiliary contact and the main contact; the advanced ARM technology and the high-speed isolation optocoupler are sampled, sampling of up to 100ksps can be conducted, small bouncing details can be distinguished, and time parameters can be analyzed more finely.
Description
Technical Field
The utility model relates to a contactor test technical field, concretely relates to vacuum contactor synchronous tester.
Background
The contactor is an automatic control electric appliance with wide application, is mainly used for alternating current and direct current circuits which are frequently switched on or switched off, has the advantages of large control capacity, convenient use and the like, can realize the functions of timing operation, interlocking control, various quantitative control, voltage loss and undervoltage protection and the like by matching with a relay, and is widely applied to automatic control circuits.
Contactor need carry out performance detection and data file to contactor before dispatching from the factory usually, and the detection custom of needle to contactor in prior art adopts artifical frock to detect, and artificially contradicts the binding post of test probe and contactor, and rethread parameter detection mechanism detects, but because the model of contactor is of a great variety, according to the difference of model kind, just need detect respectively through different testing personnel, lead to its detection efficiency low, intensity of labour is big, shortcoming such as manufacturing cost height.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides a can be used for detecting different model kinds of contactors, compatible alternating current-direct current contactor takes the contactor of auxiliary contact, and the contactor detecting instrument that detection efficiency is high.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
a vacuum contactor synchronous tester, comprising: the switching-on and switching-off coil supplies power to the alternating current and direct current power supply, is composed of a numerical control alternating current and direct current power supply, and outputs an alternating current or direct current power supply to the switching-on and switching-off coil of the tested vacuum contactor through a switching-on and switching-off coil power supply control switch;
the program control amplifying circuit unit outputs analog quantity through a built-in DA module to control the direct current voltage value or the alternating current voltage value output by the alternating current and direct current power supply of the opening and closing coil;
the switch-on/switch-off power transmission control signal unit outputs a switch-on/switch-off pulse signal to a switch-on/switch-off coil power supply control switch through an isolation optical coupler so as to control the switch-on/switch-off coil power supply alternating current/direct current power supply output power supply;
the current sensor is connected with the power supply control switch of the opening and closing coil, detects the current value of the opening and closing coil of the vacuum contactor and outputs a current signal;
the voltage sensor is connected with the switching-on and switching-off coil to supply an alternating current and direct current power supply, detects the voltage value of the switching-on and switching-off coil of the vacuum contactor and outputs a voltage signal;
the main contact isolation channel and the auxiliary contact isolation channel are connected with a main contact and an auxiliary contact of the vacuum contactor through high-speed optical couplers, and contact data of the main contact and the auxiliary contact of the vacuum contactor are obtained;
and the CPU unit outputs the switching-on and switching-off control signals and acquires the current signals, the voltage signals and the contact data for processing.
Preferably, the CPU unit is in signal connection with a high-capacity FLASH, and the high-capacity FLASH is used to store the data acquired by the CPU unit and the processed data.
Preferably, the system further comprises an isolated USB and 232 communication port in signal connection with the CPU unit.
Preferably, a USB flash disk interface for data export and a Bluetooth module for communication with an upper computer are further arranged.
Preferably, the device also comprises a liquid crystal screen for displaying the data table and the oscillogram processed by the CPU unit; the key board is used for inputting data and control instructions; and the high-speed thermal printer is used for printing the data table and the waveform chart processed by the CPU unit.
The utility model can be compatible with the test of AC and DC contactors by internally arranging a numerical control DC power supply and an AC power supply, and can satisfy contactors with various power and coil types; testing of contactors compatible with electrical retention and self-latching; the testing device has the testing capability of the auxiliary contact, and can test the matching time of the auxiliary contact and the main contact; the advanced ARM technology and the high-speed isolation optocoupler are sampled, sampling of up to 100ksps can be conducted, small bouncing details can be distinguished, and time parameters can be analyzed more finely.
Drawings
Fig. 1 is a schematic block diagram of the system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The switching-on and switching-off coil power supply alternating current and direct current power supply is composed of a numerical control alternating current and direct current power supply (the voltage range of the alternating current numerical control power supply is 0V to 380V, the voltage range of the direct current numerical control power supply is 5V to 270V, and the maximum output current is 5A). The power supply is sent to the switching-on and switching-off coil of the vacuum contactor to be measured through the switching-on and switching-off coil power supply control switch so as to control the switching-off or switching-on of the vacuum contactor, the switching-on and switching-off coil power supply control switch is used for controlling the power-on time of the switching-on and switching-off coil power supply alternating current and direct current power supply or alternating current power supply output by the switching-on and switching-off coil power supply.
When the vacuum contactor is tested, the switching-on and switching-off coils of the vacuum contactor are respectively connected to the output end of the switching-on and switching-off coil power supply control switch, and then the main contact and the auxiliary contact of the contactor are connected to the main contact isolation channel and the auxiliary contact isolation channel through the high-speed optical coupler. And setting the power supply voltage according to the rated voltage of the tested vacuum contactor, and selecting self-locking or electric holding according to whether the opening and closing coil is in electric holding. The method comprises the following steps that a 'test' key on a key board is pressed to test, the test is started, a Hall current sensor is adopted as a current sensor, a current signal of the Hall current sensor is obtained by sensing current flowing through a power supply control switch of a switching-on/off coil and is converted into a voltage signal, and then the current signal is collected and recorded through a built-in AD of a CPU unit; the voltage sensor is connected with the output end of the alternating current and direct current power supply for supplying power to the switching-on and switching-off coil, the change of the voltage on the switching-on and switching-off coil is detected, and the voltage signal of the voltage sensor is collected and recorded through the built-in AD of the CPU unit; the main contact and the auxiliary contact of the tested contactor respectively transmit the contact data to the parallel port of the CPU through the main contact isolation channel and the auxiliary contact isolation channel and record the contact data, so that index data such as the attraction time, the release time, the bounce and the synchronization of the main contact of the contactor, the action time of the auxiliary contact, the matching time of the auxiliary contact and the main contact are obtained. And after the preset test time is up, the CPU unit analyzes and processes the acquired data, the analyzed and processed data is displayed on the liquid crystal screen in the form of a data table and a waveform diagram, and a preset qualified threshold value is combined to prompt whether the data is qualified or unqualified.
The data table and the oscillogram after analysis and processing are printed and output through a thermal printer and stored to a high-capacity FLASH, the corresponding data mark and the oscillogram can be led out to a U disk through a U disk interface, and the data table and the oscillogram after analysis and processing are communicated with upper computer software through an isolated 232 interface and an isolated USB communication interface, or the data collected by a CPU unit and the data table and the oscillogram after analysis and processing are uploaded to a database terminal of a PC through a Bluetooth module to be filed and stored.
The CPU unit adopts a high-performance ARM chip, so that the control capability, the data processing capability and the data acquisition capability are greatly improved, and the CPU unit also has powerful peripheral driving capability, so that the precision index and the functional characteristics are effectively improved. The CPU unit is internally provided with a multi-channel AD which collects data of a voltage sensor, a current sensor, a main contact and an auxiliary contact at a sampling rate of 100ksps, and processes the collected data to obtain various technical indexes of the tested contactor, wherein the indexes mainly comprise the suction time, the release time, the bounce and the synchronization of a main contact of the contactor, the action time of the auxiliary contact and the matching time of the main contact, and whether the contactor is qualified or not is judged according to a set qualified threshold value.
Claims (5)
1. A vacuum contactor synchronous tester, characterized by comprising:
the switching-on and switching-off coil supplies power to the alternating current and direct current power supply, is composed of a numerical control alternating current and direct current power supply, and outputs an alternating current or direct current power supply to the switching-on and switching-off coil of the tested vacuum contactor through a switching-on and switching-off coil power supply control switch;
the program control amplifying circuit unit outputs analog quantity through a built-in DA module to control the direct current voltage value or the alternating current voltage value output by the alternating current and direct current power supply of the opening and closing coil;
the switch-on/switch-off power transmission control signal unit outputs a switch-on/switch-off pulse signal to a switch-on/switch-off coil power supply control switch through an isolation optical coupler so as to control the switch-on/switch-off coil power supply alternating current/direct current power supply output power supply;
the current sensor is connected with the power supply control switch of the opening and closing coil, detects the current value of the opening and closing coil of the vacuum contactor and outputs a current signal;
the voltage sensor is connected with the switching-on and switching-off coil to supply an alternating current and direct current power supply, detects the voltage value of the switching-on and switching-off coil of the vacuum contactor and outputs a voltage signal;
the main contact isolation channel and the auxiliary contact isolation channel are connected with a main contact and an auxiliary contact of the vacuum contactor through high-speed optical couplers, and contact data of the main contact and the auxiliary contact of the vacuum contactor are obtained;
and the CPU unit outputs the switching-on and switching-off control signals and acquires the current signals, the voltage signals and the contact data for processing.
2. The vacuum contactor synchronous tester as claimed in claim 1, wherein: the CPU unit is in signal connection with a high-capacity FLASH, and the high-capacity FLASH is used for storing the data acquired by the CPU unit and the processed data.
3. The vacuum contactor synchronous tester as claimed in claim 1, wherein: also comprises an isolated USB and 232 communication port which is in signal connection with the CPU unit.
4. The vacuum contactor synchronous tester as claimed in claim 1, wherein: the USB flash disk is also provided with a USB flash disk interface for data export and a Bluetooth module for communicating with an upper computer.
5. The vacuum contactor synchronous tester as claimed in claim 1, wherein: also comprises the following steps of (1) preparing,
the liquid crystal screen is used for displaying the data table and the oscillogram processed by the CPU;
the key board is used for inputting data and control instructions;
and the high-speed thermal printer is used for printing the data table and the waveform chart processed by the CPU unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021424010.5U CN213041959U (en) | 2020-07-20 | 2020-07-20 | Vacuum contactor synchronous tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021424010.5U CN213041959U (en) | 2020-07-20 | 2020-07-20 | Vacuum contactor synchronous tester |
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| Publication Number | Publication Date |
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| CN213041959U true CN213041959U (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021424010.5U Active CN213041959U (en) | 2020-07-20 | 2020-07-20 | Vacuum contactor synchronous tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189481A (en) * | 2021-05-21 | 2021-07-30 | 江苏大学 | Electric power instrument with circuit breaker service life monitoring function and monitoring method |
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2020
- 2020-07-20 CN CN202021424010.5U patent/CN213041959U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189481A (en) * | 2021-05-21 | 2021-07-30 | 江苏大学 | Electric power instrument with circuit breaker service life monitoring function and monitoring method |
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