A general electronic safety actuator testing tool
By designing a universal test fixture for all-electronic safety actuators and using a host computer and test adapter box to achieve automated testing, the problem of cumbersome operation and poor versatility of existing equipment is solved, providing a simple and highly adaptable testing solution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING MECHANICAL EQUIP INST
- Filing Date
- 2024-11-27
- Publication Date
- 2026-05-29
AI Technical Summary
Existing testing equipment for fully electronic safety actuators is cumbersome to operate, lacks versatility, and is difficult to carry, making it unsuitable for testing in harsh environments.
Design a universal test fixture for all-electronic safety actuators, including a host computer and a test adapter box. The host computer configures test items and process information, generates test command signals, supplies power to the test adapter box and inputs and outputs signals, receives feedback signals and verifies them, thereby realizing automated testing.
It achieves simple operation, universal model compatibility, and strong adaptability testing. It can automatically complete testing under different working conditions and is small in size and easy to carry.
Smart Images
Figure CN122107883A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of safety actuator testing technology, and in particular to a universal testing fixture for all-electronic safety actuators. Background Technology
[0002] A fully electronic safety actuator is a critical component of a missile system, primarily responsible for ensuring the safety and reliability of the missile at different stages. This mechanism typically includes an electronic control unit and corresponding actuators, which work together to achieve the locking, unlocking, and detonation control of the missile's warhead.
[0003] To conduct testing during the development and mass production of fully electronic safety actuators, two testing methods are typically used. One method employs a control mode using an industrial control computer with built-in function boards and an external regulated power supply. The principle is to use a relay card to simulate external control commands and an AD acquisition card to test the data returned by the safety actuator. However, due to hardware limitations of the industrial control computer itself—its large size, poor environmental adaptability, and inability to meet the needs of on-site testing of safety actuators in harsh environments—the second method involves designing a dedicated test box. This box uses a PWM generator to simulate external device command signals, and the test signals returned by the safety actuator are extracted via connectors and then observed using an oscilloscope. However, this method requires a dedicated test instrument, and the same instrument cannot test the functions of multiple safety actuator models. Furthermore, both testing methods are cumbersome to operate; the processes of equipment startup, testing, and test result storage cannot be completed quickly in one go.
[0004] Therefore, there is an urgent need for a fully electronic safety actuator testing device that is easy to operate, has a universal model, and is portable. Summary of the Invention
[0005] Based on the above analysis, the present invention aims to provide a universal testing fixture for all-electronic safety actuators, in order to solve the problems of cumbersome operation, poor versatility, and difficulty in carrying existing testing equipment for all-electronic safety actuators.
[0006] On the one hand, embodiments of the present invention provide a universal testing fixture for all-electronic safety actuators, including a host computer and a test adapter box;
[0007] The host computer is used to configure the test items for the safety actuator and the test process information for each model of safety actuator; wherein, the test process information includes the power supply voltage of the safety actuator model, each test item, the sending rules for each test item, the parameter information for each test item, and the verification rules;
[0008] The host computer is also used to generate test process instruction signals and power supply voltage signals for the safety actuator under test based on the model, test process information and test items of the safety actuator under test.
[0009] The test adapter box is used to supply power to the safety actuator under test according to the received power supply voltage signal; it is also used to input test signals to the safety actuator under test according to the received test process instruction signals; and it is also used to receive feedback signals from the safety actuator under test in response to the test signals.
[0010] The host computer is also used to receive feedback signals from the safety actuator under test, and to perform verification according to the verification rules of the safety actuator under test of that model, thereby completing the test of the safety actuator under test.
[0011] Furthermore, the test adapter box includes multiple test units, each of which corresponds one-to-one with the safety actuator under test;
[0012] The host computer sends corresponding test process instruction signals to each test unit according to the model of each safety actuator under test connected to the test unit.
[0013] Furthermore, the test process command signal includes a series of process sub-command signals sent sequentially according to the transmission rules; the process sub-command signals include voltage control signals, port control signals, and test sub-command signals; the test unit inputs test signals to the safety actuator under test in the following manner:
[0014] Receive and execute each of the aforementioned process sub-instruction signals in sequence:
[0015] The input port corresponding to the current test sub-instruction of the safety actuator under test is selected based on the port control signal;
[0016] Generate the signal voltage for the current test sub-command based on the voltage control signal;
[0017] A test signal is generated based on the signal voltage of the current test sub-instruction and the current test sub-instruction, and then input to the safety actuator under test through the selected input port of the safety actuator under test;
[0018] The process sub-instruction signal, test sub-instruction signal, input test signal and test item correspond one-to-one.
[0019] Furthermore, the feedback signal includes feedback sub-signals output from multiple output ports of the safety execution structure under test; the verification rules include signal reception order rules and signal form rules; the host computer performs verification in the above manner:
[0020] The received feedback sub-signals are sorted according to their time sequence, and the time difference between each feedback sub-signal is obtained.
[0021] If the order and time difference of each feedback sub-signal satisfy the receiving order rule, then determine whether each feedback sub-signal satisfies the corresponding signal form rule. If it does, the verification passes.
[0022] Furthermore, the test adapter box also includes a programmable power supply;
[0023] The programmable power supply is used to supply power to the safety actuator under test according to the power supply voltage signal of each safety actuator under test; it is also used to generate the corresponding signal voltage of each test unit according to the voltage control signal of the host computer.
[0024] Furthermore, the test unit includes an analog switch circuit, a signal generation circuit, and multiple telemetry feedback circuits;
[0025] The control terminal of the analog switch circuit is connected to the host computer and receives port control signals from the host computer; the input terminal of the analog switch circuit is connected to the output terminal of the signal generation circuit; each output terminal of the analog switch circuit is connected to each input terminal of the safety actuator under test.
[0026] The input terminal of the signal generation circuit is connected to the host computer to receive the test sub-command signal from the host computer; the voltage terminal of the signal generation circuit is connected to the output terminal of the programmable power supply.
[0027] The input terminal of each telemetry feedback circuit is connected to the feedback terminal of the safety actuator under test in a one-to-one correspondence; the output terminal of each telemetry feedback circuit is connected to the host computer, and sends each feedback sub-signal to the host computer.
[0028] Furthermore, the signal generation circuit includes first, second, third, fourth, and fifth resistors, a first capacitor, and an optocoupler;
[0029] One end of the first resistor serves as the input terminal of the signal generating circuit, and the other end is connected to one end of the second resistor, the third resistor, and the first capacitor, respectively; the other ends of the second resistor and the first capacitor are grounded.
[0030] In the optocoupler, the positive terminal of the emitting diode is connected to the other end of the third resistor, and the negative terminal of the emitting diode is grounded; the emitter of the phototransistor in the optocoupler is connected to the programmable power supply, and the collector of the phototransistor in the optocoupler is connected to one end of the fourth and fifth resistors; the other end of the fourth resistor is grounded.
[0031] The other end of the fifth resistor serves as the output terminal of the signal generation circuit.
[0032] Furthermore, the telemetry feedback circuit includes a sixth resistor, a seventh resistor, and a second capacitor;
[0033] One end of the sixth resistor serves as the output terminal of the telemetry feedback circuit, and the other end is connected to one end of the seventh resistor; the other end of the seventh resistor is grounded after passing through the second capacitor, and the other end of the seventh resistor also serves as the input terminal of the telemetry feedback circuit.
[0034] Furthermore, the test unit also includes a current acquisition circuit for acquiring the current of the safety actuator under test and transmitting it to the host computer; the test process information also includes the current threshold of the safety actuator of this model; during the host computer test, if the current of the corresponding safety actuator under test received by the host computer is higher than the current threshold of the safety actuator under test, the corresponding safety actuator under test will be immediately powered off and an alarm signal will be issued.
[0035] Furthermore, the test process information also includes the model identification current of the safety actuator of that model; the host computer obtains the model of each safety actuator under test in the following way:
[0036] Before testing, the host computer obtains the minimum power supply voltage for each type of safety actuator;
[0037] The host computer controls the programmable power supply to provide power to each safety actuator under test based on the minimum supply voltage;
[0038] The current of each safety actuator under test is obtained through the current acquisition circuit of each test unit.
[0039] The model of each safety actuator under test is obtained based on the current collected from each actuator and the model identification current of each type of safety actuator.
[0040] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:
[0041] This invention provides a universal testing fixture for all-electronic safety actuators, comprising a host computer and a test adapter box. The host computer configures the test items and test procedure information for each model of safety actuator, and then generates test procedure command signals and power supply voltage signals for the safety actuator under test based on its model, test procedure information, and test items. The test adapter box supplies power to the safety actuator under test according to the received power supply voltage signal, inputs test signals to the safety actuator under test according to the received test procedure command signals, and receives feedback signals from the safety actuator under test in response to the test signals. The host computer also receives the feedback signals from the safety actuator under test and performs verification according to the verification rules for that model of safety actuator under test, thus completing the test of the safety actuator under test. This testing fixture has a simple structure, small size, and strong adaptability, capable of meeting testing tasks for different models and under different operating conditions. It has good controllability and observability, is easy to operate, and can automatically complete the testing process for all-electronic safety actuators.
[0042] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description
[0043] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.
[0044] Figure 1 A schematic diagram of a universal testing fixture for an all-electronic safety actuator provided in an embodiment of the present invention;
[0045] Figure 2 This is a connection diagram of the signal generation circuit provided in an embodiment of the present invention;
[0046] Figure 3 This is a connection diagram of the telemetry feedback circuit provided in an embodiment of the present invention;
[0047] Figure 4 A connection diagram of the first filter circuit provided in an embodiment of the present invention;
[0048] Figure 5 This is a connection diagram of the second filter circuit provided in an embodiment of the present invention;
[0049] Figure 6 This is a connection diagram of an analog switch circuit provided in an embodiment of the present invention. Detailed Implementation
[0050] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.
[0051] A specific embodiment of the present invention discloses a universal testing fixture for all-electronic safety actuators, such as... Figure 1 As shown, it includes a host computer and a test adapter box;
[0052] The host computer is used to configure the test items for the safety actuator and the test process information for each model of safety actuator; wherein, the test process information includes the power supply voltage of the safety actuator model, each test item, the sending rules for each test item, the parameter information for each test item, and the verification rules;
[0053] The host computer is also used to generate test process instruction signals and power supply voltage signals for the safety actuator under test based on the model, test process information and test items of the safety actuator under test.
[0054] The test adapter box is used to supply power to the safety actuator under test according to the received power supply voltage signal; it is also used to input test signals to the safety actuator under test according to the received test process instruction signals; and it is also used to receive feedback signals from the safety actuator under test in response to the test signals.
[0055] The host computer is also used to receive feedback signals from the safety actuator under test, and to perform verification according to the verification rules of the safety actuator under test of that model, thereby completing the test of the safety actuator under test.
[0056] Specifically, each test item uses different types of signals to test different functions of the safety actuator, and is constructed according to the signal types required by different models of safety actuators.
[0057] For example, the test items include high and low level signal test items, pulse signal test items, and PWM wave signal test items.
[0058] Specifically, the parameter information of the test item refers to the specific settings of the test item signal.
[0059] For example, if the test item is a high or low level signal, the parameter information of the test item includes the voltage of the high level signal, wherein the voltage of the low level signal is 0. If the test item is a pulse signal, the parameter information of the test item includes the voltage of the high level pulse and the pulse width. If the test item is a PWM wave signal, the parameter information of the test item includes the voltage of the high level pulse, the pulse width, and the pulse period.
[0060] Specifically, the sending rules for each test item are the sending order and time interval of each test item.
[0061] It should be noted that different models of safety actuators have different power-on procedures, fuse release procedures, fault reset procedures, and external command signal provision procedures. The required power supply voltage, signals, signal transmission rules, and feedback signal verification rules for each model also differ. In this embodiment, test items are constructed based on the signal types required for testing each model of safety actuator, and test procedures are constructed for each model based on the required signals, signal transmission rules, and verification rules. When testing a specific model of safety actuator, the corresponding test items are called according to the corresponding test procedure to generate test signals.
[0062] More specifically, the host computer uses LabVIEW to construct and encapsulate test items and test process information, and uses LabVIEW's graphical controls to communicate with the test adapter box. LabVIEW's graphical test interface can intuitively reflect the input and output interfaces of the safety actuator under test. Each test item is encapsulated into a sub-module, and NI's automated test management software TeslStand is used to call a large number of test items in an orderly manner, realizing automated management of the test process, automatically executing test operations, observing test phenomena, and providing test results.
[0063] In practice, the test adapter box includes multiple test units, each of which corresponds one-to-one with the safety actuator under test;
[0064] The host computer sends corresponding test process instruction signals to each test unit according to the model of each safety actuator under test connected to the test unit.
[0065] Understandably, this testing fixture can test multiple safety actuators under test simultaneously. It connects each test unit to each safety actuator under test and sends corresponding test procedure command signals according to the model of the safety actuator under test connected to the test unit, thus meeting the heavy testing tasks after mass production of the product.
[0066] During implementation, the test process command signals include various process sub-command signals sent sequentially according to the sending rules; the process sub-command signals include voltage control signals, port control signals, and test sub-command signals; the test unit inputs test signals to the safety actuator under test in the following manner:
[0067] Receive and execute each of the aforementioned process sub-instruction signals in sequence:
[0068] The input port corresponding to the current test sub-instruction of the safety actuator under test is selected based on the port control signal;
[0069] The signal voltage of the current test sub-command signal is generated based on the voltage control signal;
[0070] A test signal is generated based on the signal voltage and the signal of the current test sub-instruction, and then input to the safety actuator under test through the selected input port of the safety actuator under test;
[0071] The process sub-instruction signal, test sub-instruction signal, input test signal and test item correspond one-to-one.
[0072] Specifically, the process sub-instruction signal is generated based on the corresponding test item and the parameter information of the test item, as well as the input port of the safety actuator under test.
[0073] In practice, the test adapter box also includes a programmable power supply;
[0074] The programmable power supply is used to supply power to the safety actuator under test according to the power supply voltage signal of each safety actuator under test; it is also used to generate the corresponding signal voltage of each test unit according to the voltage control signal.
[0075] In practice, the test unit includes an analog switch circuit, a signal generation circuit, and multiple telemetry feedback circuits.
[0076] The control terminal of the analog switch circuit is connected to the host computer and receives port control signals from the host computer; the input terminal of the analog switch circuit is connected to the output terminal of the signal generation circuit; each output terminal of the analog switch circuit is connected to each input terminal of the safety actuator under test.
[0077] The input terminal of the signal generation circuit is connected to the host computer to receive the test sub-command signal from the host computer; the voltage terminal of the signal generation circuit is connected to the output terminal of the programmable power supply.
[0078] The input terminal of each telemetry feedback circuit is connected to the feedback terminal of the safety actuator under test in a one-to-one correspondence; the output terminal of each telemetry feedback circuit is connected to the host computer, and sends each feedback sub-signal to the host computer.
[0079] Specifically, such as Figure 2 As shown, the signal generation circuit includes first, second, third, fourth, and fifth resistors, a first capacitor, and an optocoupler;
[0080] One end of the first resistor serves as the input terminal of the signal generating circuit, and the other end is connected to one end of the second resistor, the third resistor, and the first capacitor, respectively; the other ends of the second resistor and the first capacitor are grounded.
[0081] In the optocoupler, the positive terminal of the emitting diode is connected to the other end of the third resistor, and the negative terminal of the emitting diode is grounded; the emitter of the phototransistor in the optocoupler is connected to the programmable power supply, and the collector of the phototransistor in the optocoupler is connected to one end of the fourth and fifth resistors; the other end of the fourth resistor is grounded.
[0082] The other end of the fifth resistor serves as the output terminal of the signal generation circuit.
[0083] It is understandable that the signal generation circuit controls the on / off state of the optocoupler and the on / off time through the test sub-command signal, thereby controlling the signal type. Based on the voltage output by the programmable power supply, the corresponding test signal can be generated.
[0084] Specifically, such as Figure 3 As shown, the telemetry feedback circuit includes a sixth resistor, a seventh resistor, and a second capacitor;
[0085] One end of the sixth resistor serves as the output terminal of the telemetry feedback circuit, and the other end is connected to one end of the seventh resistor; the other end of the seventh resistor is grounded after passing through the second capacitor, and the other end of the seventh resistor also serves as the input terminal of the telemetry feedback circuit.
[0086] Preferably, the telemetry feedback circuit further includes a first filter circuit; the output terminal of the first filter circuit is connected to the other end of the seventh resistor, and the input terminal serves as the input terminal of the telemetry feedback circuit; for example... Figure 4 As shown, the first filter circuit includes resistors eight, nine, ten, and eleven, capacitors three and four, and a comparator;
[0087] One end of the third capacitor serves as the input terminal of the first filter circuit and is also connected to the output terminal of the comparator; the other end of the third capacitor is grounded after passing through the eighth resistor, and the other end is also connected to the non-inverting input terminal of the comparator after passing through the ninth resistor; the non-inverting input terminal of the comparator is also grounded after passing through the fourth capacitor.
[0088] The inverting input of the comparator is connected to the output via the eleventh resistor, and the inverting input is also grounded via the tenth resistor; the output of the comparator serves as the output of the first filter circuit.
[0089] Specifically, the ninth, tenth, and eleventh resistors have the same resistance value, the eighth resistor has a resistance value that is m times that of the ninth, tenth, or eleventh resistors, and the third capacitor has a capacitance value that is n times that of the fourth capacitor.
[0090] Specifically, the values of each resistor and capacitor in the first filter circuit are set according to the cutoff frequency of the first filter circuit. The cutoff frequency f of the first filter circuit is expressed as:
[0091]
[0092] In the formula, R represents the resistance value of the ninth, tenth, or eleventh resistor, C represents the capacitance value of the fourth capacitor, m is the multiple of the resistance value of the eighth resistor, and n is the multiple of the capacitance value of the third capacitor.
[0093] More specifically, the cutoff frequency of the first filter circuit is set to 800Hz.
[0094] Understandably, in order to make the test fixture small and easy to carry, the filtering function of the telemetry signal transmitter is integrated into the input port of each telemetry feedback circuit to realize the filtering function of the telemetry signal; and the output frequency of the feedback sub-signal is low, generally below 500Hz, so the cutoff frequency of the filter can be set at 800Hz to effectively realize the filtering function.
[0095] Preferably, the telemetry feedback circuit further includes a second filter circuit; the input terminal of the second filter circuit is connected to one end of the sixth resistor, and the output terminal serves as the output terminal of the telemetry feedback circuit; for example... Figure 5 As shown, the second filter circuit includes fifth and sixth capacitors, and twelfth and thirteenth resistors;
[0096] One end of the fifth capacitor serves as the input terminal of the second filter circuit, the other end is grounded after passing through the twelfth resistor, and the other end is also connected to one end of the thirteenth resistor.
[0097] The other end of the thirteenth circuit serves as the output of the telemetry feedback circuit, and the other end is also grounded after passing through the sixth capacitor.
[0098] Specifically, the values of the resistor and capacitor in the second filter circuit are set by the low cutoff frequency and the high cutoff frequency of the second filter circuit; wherein, the low cutoff frequency f1 and the high cutoff frequency f2 are respectively expressed as:
[0099]
[0100]
[0101] In the formula, R1 and R2 are the resistance values of the twelfth and thirteenth resistors, respectively, and C1 and C2 are the capacitance values of the fifth and sixth capacitors, respectively.
[0102] Specifically, the low cutoff frequency f1 is set to 50Hz, and the high cutoff frequency f2 is set to 1.5kHz.
[0103] It is understandable that the frequency of the feedback sub-signal received by the host computer is generally between 100Hz and 1kHz. Therefore, a bandpass filter circuit of 50Hz-1.5kHz is built at the signal receiving end to realize the filtering function of the receiving end signal.
[0104] Specifically, the analog switch circuit is an analog switch chip used to select the input terminal and the corresponding output terminal according to the received port control signal; each output terminal of the analog switch circuit is connected to each input terminal of the safety actuator under test.
[0105] For example, analog switch chips, such as Figure 6 As shown, control terminals A0, A1, and A2 are used to receive port control signals from the host computer; input terminal Z is used to receive test signals from the output terminal of the signal generator; output terminals Y0-Y7 are used to connect to the input terminals of the safety actuator under test, and are selected and set according to the signals required by the safety actuator under test; the voltage terminal is connected to the programmable power supply and grounded through the seventh capacitor; the enable terminal 1E, the digital signal ground terminal VSS, and the negative power supply voltage terminal VEE are all grounded.
[0106] Preferably, the test unit further includes a current acquisition circuit for acquiring the current of the safety actuator under test and transmitting it to the host computer; the test process information also includes the current threshold of the safety actuator of this model; during the host computer test, if the current of the corresponding safety actuator under test received by the host computer is higher than the current threshold of the safety actuator under test, the corresponding safety actuator under test will be immediately powered off and an alarm signal will be issued.
[0107] More preferably, the test process information also includes the model identification current of the safety actuator of that model; the host computer obtains the model of each safety actuator under test in the following way:
[0108] Before testing, the host computer obtains the minimum power supply voltage for each type of safety actuator;
[0109] The host computer controls the programmable power supply to provide power to each safety actuator under test based on the minimum supply voltage;
[0110] The current of each safety actuator under test is obtained through the current acquisition circuit of each test unit.
[0111] The model of each safety actuator under test is obtained based on the current collected from each actuator and the model identification current of each type of safety actuator.
[0112] During implementation, the feedback signal includes feedback sub-signals output from multiple output ports of the safety execution structure under test; the verification rules include signal reception order rules and signal form rules; the host computer performs verification in the above manner:
[0113] The received feedback sub-signals are sorted according to their time sequence, and the time difference between each feedback sub-signal is obtained.
[0114] If the order and time difference of each feedback sub-signal satisfy the receiving order rule, then determine whether each feedback sub-signal satisfies the corresponding signal form rule. If it does, the verification passes.
[0115] Specifically, if the order and time difference of each feedback sub-signal do not meet the receiving order rules, the host computer will retest. If the rules are not met for three consecutive tests, the verification will fail.
[0116] Specifically, if the order of each feedback sub-signal satisfies the preset receiving order and the time difference between each feedback sub-signal satisfies the preset receiving time difference, then it is determined that the order and time difference of each feedback sub-signal satisfy the receiving order rule.
[0117] Specifically, if each feedback sub-signal does not meet the corresponding signal form rules, the host computer will retest. If it fails to meet the rules three times in a row, the verification will fail.
[0118] Specifically, the signal form rules include signal type and signal parameter information.
[0119] For example, if the feedback sub-signal should be a pulse signal, then it is determined whether it is a pulse signal, and whether its high signal voltage and pulse width are the same as the set parameter information.
[0120] Specifically, the host computer, test adapter box, and safety actuator under test are connected via test cables.
[0121] Compared with existing technologies, this embodiment provides a universal testing fixture for all-electronic safety actuators, including a host computer and a test adapter box. The host computer is used to configure the test items and test process information for each model of safety actuator, and then generates test process command signals and power supply voltage signals for the safety actuator under test based on the model, test process information, and test items. The test adapter box is used to supply power to the safety actuator under test according to the received power supply voltage signal, and input test signals to the safety actuator under test according to the received test process command signals. It also receives feedback signals from the safety actuator under test in response to the test signals. The host computer is also used to receive feedback signals from the safety actuator under test and perform verification according to the verification rules of the model of the safety actuator under test to complete the test of the safety actuator under test. This testing fixture has a simple structure, small size, and strong adaptability, and can meet the testing tasks of different models and under different operating conditions. It has good controllability and observability, is easy to operate, and can automatically complete the testing process of all-electronic safety actuators.
[0122] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.
[0123] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.
Claims
1. A universal testing fixture for all-electronic safety actuators, characterized in that, Includes the host computer and the test adapter box; The host computer is used to configure the test items for the safety actuator and the test process information for each model of safety actuator; wherein, the test process information includes the power supply voltage of the safety actuator model, each test item, the sending rules for each test item, the parameter information for each test item, and the verification rules; The host computer is also used to generate test process instruction signals and power supply voltage signals for the safety actuator under test based on the model, test process information and test items of the safety actuator under test. The test adapter box is used to supply power to the safety actuator under test according to the received power supply voltage signal; it is also used to input test signals to the safety actuator under test according to the received test process instruction signals; and it is also used to receive feedback signals from the safety actuator under test in response to the test signals. The host computer is also used to receive feedback signals from the safety actuator under test, and to perform verification according to the verification rules of the safety actuator under test of that model, thereby completing the test of the safety actuator under test.
2. The universal testing fixture for all-electronic safety actuators according to claim 1, characterized in that, The test adapter box includes multiple test units, each of which corresponds to the safety actuator under test. The host computer sends corresponding test process instruction signals to each test unit according to the model of each safety actuator under test connected to the test unit.
3. The universal testing fixture for all-electronic safety actuators according to claim 1, characterized in that, The test process command signals include various process sub-command signals sent sequentially according to the transmission rules; the process sub-command signals include voltage control signals, port control signals, and test sub-command signals; the test unit inputs test signals to the safety actuator under test in the following manner: Receive and execute each of the aforementioned process sub-instruction signals in sequence: The input port corresponding to the current test sub-instruction of the safety actuator under test is selected based on the port control signal; Generate the signal voltage for the current test sub-command based on the voltage control signal; A test signal is generated based on the signal voltage of the current test sub-instruction and the current test sub-instruction, and then input to the safety actuator under test through the selected input port of the safety actuator under test; The process sub-instruction signal, test sub-instruction signal, input test signal and test item correspond one-to-one.
4. The universal testing fixture for all-electronic safety actuators according to claim 1, characterized in that, The feedback signal includes feedback sub-signals output from multiple output ports of the safety execution structure under test; the verification rules include signal reception order rules and signal form rules; the host computer performs verification in the above manner: The received feedback sub-signals are sorted according to their time sequence, and the time difference between each feedback sub-signal is obtained. If the order and time difference of each feedback sub-signal satisfy the receiving order rule, then determine whether each feedback sub-signal satisfies the corresponding signal form rule. If it does, the verification passes.
5. The universal testing fixture for all-electronic safety actuators according to claim 3, characterized in that, The test adapter box also includes a programmable power supply; The programmable power supply is used to supply power to the safety actuator under test according to the power supply voltage signal of each safety actuator under test; it is also used to generate the corresponding signal voltage of each test unit according to the voltage control signal of the host computer.
6. The universal testing fixture for all-electronic safety actuators according to claim 5, characterized in that, The test unit includes an analog switch circuit, a signal generation circuit, and multiple telemetry feedback circuits; The control terminal of the analog switch circuit is connected to the host computer and receives port control signals from the host computer; the input terminal of the analog switch circuit is connected to the output terminal of the signal generation circuit; each output terminal of the analog switch circuit is connected to each input terminal of the safety actuator under test. The input terminal of the signal generation circuit is connected to the host computer to receive the test sub-command signal from the host computer; the voltage terminal of the signal generation circuit is connected to the output terminal of the programmable power supply. The input terminal of each telemetry feedback circuit is connected to the feedback terminal of the safety actuator under test in a one-to-one correspondence; the output terminal of each telemetry feedback circuit is connected to the host computer, and sends each feedback sub-signal to the host computer.
7. The universal test fixture for all-electronic safety actuators according to claim 6, characterized in that, The signal generation circuit includes resistors 1, 2, 3, 4, and 5, a first capacitor, and an optocoupler; One end of the first resistor serves as the input terminal of the signal generating circuit, and the other end is connected to one end of the second resistor, the third resistor, and the first capacitor, respectively; the other ends of the second resistor and the first capacitor are grounded. In the optocoupler, the positive terminal of the emitting diode is connected to the other end of the third resistor, and the negative terminal of the emitting diode is grounded; the emitter of the phototransistor in the optocoupler is connected to the programmable power supply, and the collector of the phototransistor in the optocoupler is connected to one end of the fourth and fifth resistors; the other end of the fourth resistor is grounded. The other end of the fifth resistor serves as the output terminal of the signal generation circuit.
8. The universal testing fixture for all-electronic safety actuators according to claim 6, characterized in that, The telemetry feedback circuit includes a sixth resistor, a seventh resistor, and a second capacitor; One end of the sixth resistor serves as the output terminal of the telemetry feedback circuit, and the other end is connected to one end of the seventh resistor; the other end of the seventh resistor is grounded after passing through the second capacitor, and the other end of the seventh resistor also serves as the input terminal of the telemetry feedback circuit.
9. The universal testing fixture for all-electronic safety actuators according to claim 2, characterized in that, The test unit also includes a current acquisition circuit for acquiring the current of the safety actuator under test and transmitting it to the host computer; the test process information also includes the current threshold of the safety actuator of this model; during the host computer test, if the current of the corresponding safety actuator under test received by the host computer is higher than the current threshold of the safety actuator under test, the corresponding safety actuator under test will be immediately powered off and an alarm signal will be issued.
10. The universal testing fixture for all-electronic safety actuators according to claim 2, characterized in that, The test process information also includes the model identification current of the safety actuator; the host computer obtains the model of each safety actuator under test in the following way: Before testing, the host computer obtains the minimum power supply voltage for each type of safety actuator; The host computer controls the programmable power supply to provide power to each safety actuator under test based on the minimum supply voltage; The current of each safety actuator under test is obtained through the current acquisition circuit of each test unit. The model of each safety actuator under test is obtained based on the current collected from each actuator and the model identification current of each type of safety actuator.