CN113687221B - Automatic detection device for miniature relay - Google Patents
Automatic detection device for miniature relay Download PDFInfo
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- CN113687221B CN113687221B CN202110924315.5A CN202110924315A CN113687221B CN 113687221 B CN113687221 B CN 113687221B CN 202110924315 A CN202110924315 A CN 202110924315A CN 113687221 B CN113687221 B CN 113687221B
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Abstract
The invention discloses a small-sized relay automatic detection device, which belongs to the technical field of relay automatic detection and comprises a detection circuit board, wherein a control chip, a key circuit, a power circuit, a test-in-test and test result prompting circuit, a detection circuit and a buzzer circuit are respectively soldered on the detection circuit board, and the power circuit is respectively connected with the control chip and a relay coil circuit for supplying power. According to the automatic detection device for the miniature relay, after the start key SW1 is pressed, the control chip receives the start signal, the standard states of the relay to be detected are detected, the LED1 outputs the light emitting diode to be normally on in detection, the light emitting diode LED2 is normally on when the result meets the standard requirement and is output through the LED2, the passive buzzer LS1 emits a sound, the result does not meet the standard requirement and is output through the LED3 and the laser LED3 is normally on, the passive buzzer LS1 emits two sounds, the cost is low, and the detection is realized rapidly and accurately.
Description
Technical Field
The invention relates to the technical field of automatic relay detection, in particular to a small-sized automatic relay detection device.
Background
As an important electrical element, a relay has been widely used in the electronics industry. However, due to the small size and other problems of the relay, the relay is not easy to automatically detect, and the relay electrical comprehensive tester and the automatic detection equipment are used for testing the contact resistance between the test contacts of the electromagnetic relay, so that the test efficiency can be improved. The automatic relay detection equipment in the prior art only has one row of vertical test probes, and the probe heads are in contact with the relay pin tips during the test, so that the contact is unstable due to the high test speed and small contact area, the contact resistance is misjudged, the misjudgment proportion in the detection process is about 10%, and the accuracy of the product test is greatly reduced.
The CN210181172U discloses a small-sized weak current control relay automatic detection device, which controls a constant current power supply 2 in a detection platform on a special automatic control software interface in automatic detection control equipment 5 to output current and drive a relay coil. The initial current is set to 24VDC. And recording the original state data of the relay to be tested, changing the output value of the driving current of the relay coil through automatic control software until the output contact of the relay acts, and recording the action value.
There are the following problems:
the detection mechanism needs to be matched with the detection table for synchronous use, so that a single detection device cannot detect the miniature relay, and the added control detection table needs additional cost.
Disclosure of Invention
The invention aims to provide a small-sized relay automatic detection device which is used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a miniature relay automatic checkout device, including the detection circuit board, the last control chip that has soldered respectively of detection circuit board, key circuit, power supply circuit, test and test result suggestion circuit, detection circuit and buzzer circuit, power supply circuit is connected with control chip and detection circuit respectively and is used for supplying power, key circuit and the input control chip of the circuit of detection are connected, control chip's output and test result suggestion circuit and buzzer circuit connection.
Further, pins 1,2 and 3 of the control chip are connected to the test and test result prompting circuit; the pin 12 of the control chip is connected with a parallel point of the resistor R6, the capacitor C3 and the DEBUG1 terminal angle 1 for resetting; the pin 14 of the control chip is connected with the DEBUG1 end corner 2; pins 15 and 16 of the control chip are respectively connected to the end corners 5 and 4 of the DEBUG1 and used for burning a C programming program from five pins of the DEBUG1 into the control chip; a pin 17 of the control chip is connected with a key circuit; the pin 26 of the control chip is connected with the buzzer circuit, and the pin 36 of the control chip is connected with the base terminal of the triode of the detection circuit; pins 45, 46, 47 and 48 of the control chip are respectively connected with the contact ends of the relay connected with the detection circuit, and detect the standard states of the relay.
Further, the terminal angle 1 of the DM1-115GP-1 travel switch SW1 of the key circuit is connected with the parallel point of the resistor R16 and the pin 17 of the control chip 2, the resistor R16 is connected with VCC, and the terminal angles 2 and 3 of the DM1-115GP-1 travel switch SW1 are grounded.
Further, the pin N of the AM22-12W-V chip U1 of the power supply circuit is connected with the end corners 1 of CN1 and CN3, the pin L of the AM22-12W-V chip U1 is connected with the end corners 3 of CN1 and CN3 in series, the pin Vol+ of the AM22-12W-V chip U1 is connected with 24V voltage, the pin Vol+ supplies 24V voltage to the relay coil circuit, the Vo2 supplies the control chip power supply (5V), and the pin 14 of the chip.
Further, the test circuit is divided into three identical circuits, and three states of a circuit under test, a qualified circuit under test and a bad circuit under test are respectively formed, a collector series resistor R38 of a DTC143XCA transistor N4 and an LED1 of the circuit under test are connected in VCC, a base electrode of the DTC143XCA transistor N4 is connected with a pin 1 of a control chip, and bases of the DTC143XCA transistor N5 and the N6 of the circuit under test are connected with pins 2 and 3 of the control chip.
Further, an end angle 1 of a ship-shaped switch K1 of the detection circuit is connected to a pin N of an AM22-12W-V chip U1, an end angle 2 of the ship-shaped switch K1 is connected to an end angle 3 of a power relay K2, an end angle 4 of the power relay K2 is connected to an end angle 13 of a coil of the relay K3, the end angle 1 of the power relay K2 is connected to a parallel point of a diode D5 and VCC, the end angle 2 of the power relay K2 is connected to the diode D5 and a collector of a DTC143XCA transistor N1, and a base of the DTC143XCA transistor N1 is connected to a pin 36 of a control chip 2;
The coil end angle 14 of the relay K3 is connected to the end angle 2 of the change-over switch K4, the end angle 1 of the change-over switch K4 is connected to 24V voltage, and the end angle 3 of the change-over switch K4 is connected to the L end of the power supply circuit;
The end angle 1 of the relay K3 is connected with the parallel point of the resistor R4 and the pin 47 of the control chip, the end angle 5 of the relay K3 is connected with the parallel point of the resistor R3 and the pin 48 of the control chip, the end angle 4 of the relay K3 is connected with the parallel point of the resistor R2 and the pin 46 of the control chip, the end angle 8 of the relay K3 is connected with the parallel point of the resistor R1 and the pin 45 of the control chip, and the other ends of the resistor R1, the resistor R2, the resistor R3 and the resistor R4 are connected with VCC.
Further, the base electrode of the DTC143XCA transistor N3 of the buzzer circuit is connected to the pin 26 of the control chip, and the collector series resistor R31 of the DTC143XCA transistor N3 is connected to the passive buzzer LS 1.
Further, the terminal corners 1, 5, 4 and 8 of the change-over switch K4 are electrically connected with four sets of screw holes formed in the detection circuit board.
Compared with the prior art, the invention has the beneficial effects that:
According to the automatic detection device (detecting relay coil direct current 24v and alternating current 220 v) for the miniature relay, after a start key SW1 is pressed, a control chip receives a start signal and detects each standard state of a relay to be detected, in the detection process, a green light of a light emitting diode (LED 1) is normally on after the LED is output, when a detection result meets standard requirements, the green light of the light emitting diode (LED 2) is normally on when the detection result is output through the LED (2), a passive buzzer (LS 1) sounds, and when the detection result does not meet the standard requirements, the light is emitted and a red light of a laser (LED 3) is normally on when the detection result is output through the LED (3), and the passive buzzer (LS 1) sounds two.
Drawings
FIG. 1 is a diagram of a test circuit board according to the present invention;
FIG. 2 is a schematic diagram of a control chip of the present invention;
FIG. 3 is a schematic diagram of a key circuit of the present invention;
FIG. 4 is a schematic diagram of a power circuit of the present invention;
FIG. 5 is a schematic diagram of a prompt circuit for testing and testing results according to the present invention
FIG. 6 is a schematic diagram of a detection circuit according to the present invention
Fig. 7 is a schematic diagram of a buzzer circuit according to the present invention.
In the figure: 1. a detection circuit board; 2. a control chip; 3. a key circuit; 4. a power supply circuit; 5. a test result prompting circuit in test; 6. a detection circuit; 7. a buzzer circuit.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, an automatic detection device for a miniature relay includes a detection circuit board 1, a control chip 2, a key circuit 3, a power supply circuit 4, a prompt circuit 5 for test and test results, a detection circuit 6 and a buzzer circuit 7 are soldered on the detection circuit board 1, the power supply circuit 4 is connected with the control chip 2 and the detection circuit 6 respectively for supplying power, the key circuit 3 is connected with an input control chip 2 of the detection circuit 6, and an output end of the control chip 2 is connected with the prompt circuit 5 for test and test results and the buzzer circuit 7.
Referring to fig. 2, pins 1,2 and 3 of the control chip 2 are connected to a test result prompting circuit 5; the pin 12 of the control chip 2 is connected with a parallel point of a resistor R6, a capacitor C3 and a DEBUG1 (programming port) terminal angle 1 for resetting; a pin 14 of the control chip 2 is connected with a DEBUG1 (programming port) terminal angle 2; pins 15 and 16 of the control chip 2 are respectively connected to end angles 5 and 4 of the DEBUG1 (programming port) for burning a program of C programming from five pins of the DEBUG1 into the control chip 2; a pin 17 of the control chip 2 is connected with the key circuit 3; the pin 26 of the control chip 2 is connected with the buzzer circuit 7, and the pin 36 of the control chip 2 is connected with the triode base terminal of the detection circuit 6; pins 45, 46, 47 and 48 of the control chip 2 are respectively connected with the contact ends of the relay connected with the detection circuit 6, and detect the standard states of the relay.
Referring to fig. 3, the terminal angle 1 of the DM1-115GP-1 travel switch SW1 of the key circuit 3 is connected to the parallel point of the resistor R16 and the pin 17 of the control chip 2, the resistor R16 is connected to VCC, and the terminal angles 2 and 3 of the DM1-115GP-1 travel switch SW1 are grounded.
Referring to fig. 4, pin N of AM22-12W-V chip U1 of power circuit 4 is connected with terminal angle 1 of CN1 (plug-in bit number) and CN3 (plug-in bit number), pin L of AM22-12W-V chip U1 is connected in series with fuse FU on terminal angle 3 of CN1 and CN3, pin vol+ of AM22-12W-V chip U1 is connected with 24V voltage, and pin vol+ supplies 24V voltage to detection circuit 6, vol 2 supplies chip 5V voltage, and is connected to 14 pins of control chip (2). Firstly, after the terminals of CN1 (plug-in bit number) and CN3 (plug-in bit number) are connected with external 220V voltage, the AM22-12W-V chip U1 outputs direct current voltage 24V for supplying power to the detection circuit 6 and also 5V direct current voltage for supplying power to the control chip 2.
Referring to fig. 5, the in-test and test result prompting circuit 5 is divided into three identical circuits, respectively forming three states of an in-test circuit, a test pass circuit and a test fail circuit, wherein the collector series resistor R38 of the DTC143XCA transistor N of the in-test circuit and the LED1 are connected in VCC, the base of the DTC143XCA transistor N4 is connected with the pin 1 of the control chip 2, and the bases of the DTC143XCA transistors N5 and N6 of the test pass and test fail circuits are connected with the pins 2 and 3 of the control chip 2.
Referring to fig. 6, a terminal angle 1 of a boat-shaped switch K1 of a detection circuit 6 is connected to a pin N of an AM22-12W-V chip U1, a terminal angle 2 of the boat-shaped switch K1 is connected to a terminal angle 3 of a power relay K2, a terminal angle 4 of the power relay K2 is connected to a terminal angle 13 of a coil of the relay K3, a terminal angle 1 of the coil of the power relay K2 is connected to a parallel point of a diode D5 and VCC, a terminal angle 2 of the coil of the power relay K2 is connected to a diode D5 and a collector of a DTC143XCA transistor N1, and a base of the DTC143XCA transistor N1 is connected to a pin 36 of a control chip 2;
The coil end angle 14 of the relay K3 is connected to the end angle 2 of the change-over switch K4, the end angle 1 of the change-over switch K4 is connected to 24V voltage, the end angle 3 of the change-over switch K4 is connected to the L end of the power supply circuit 4, and the voltage (alternating current 220V or direct current 24V) of the measured relay coil is selected at the ship-shaped switch K1 and the power change-over switch K4;
the end angle 1 of the relay K3 is connected with the parallel point of the resistor R4 and the pin 47 of the control chip 2, the end angle 5 of the relay K3 is connected with the parallel point of the resistor R3 and the pin 48 of the control chip 2, the end angle 4 of the relay K3 is connected with the parallel point of the resistor R2 and the pin 46 of the control chip 2, the end angle 8 of the relay K3 is connected with the parallel point of the resistor R1 and the pin 45 of the control chip 2, the other ends of the resistor R1, the resistor R2, the resistor R3 and the resistor R4 are connected with VCC, and the end angles 1,5, 4 and 8 of the relay K3 are electrically connected with four groups of screw holes formed in the detection circuit board 1, and the detected relay is inserted in the screw holes of the relay K3.
Referring to fig. 7, a gate of a DTC143XCA transistor N3 of the buzzer circuit 7 is connected to a pin 26 of the control chip 2, a drain series resistor R31 of the DTC143XCA transistor N3 is connected to the passive buzzer LS1, when a chip detection result is not qualified, the control chip 2 outputs a positive voltage from the pin BUZZPWM, and the passive buzzer LS1 is powered on after the DTC143XCA transistor N3.
After a start key DM1-115GP-1 travel switch SW1 is pressed, a control chip 2 receives a start signal, detects each standard state of a relay to be tested from Relyl (pins 36) and 45, 46, 47 and 48 pins, small equipment can be automatically checked for each contact connection state in a state that a coil is electrified and in a state that the coil is not electrified, in the detection process, an LED1 (pin 1) outputs a light emitting diode LED1 green light normally on, when a detection result meets the standard requirement, the light emitting diode LED2 green light normally on is output through an LED2 (pin 2), a passive buzzer LS1 sounds a sound, and if the detection result does not meet the standard requirement, the light emitting diode LED3 red light normally on is output through an LED3 (pin 3), and the passive buzzer LS1 sounds two sounds.
Wherein the chip program is mainly tested by the standard:
when the small relay coil is electrified, the two groups of normally open contacts of the relay are changed from normally open to closed, and the two groups of normally closed contacts are changed from closed contacts to open.
When the miniature relay coil is changed from power-on to power-off, normally open switch-on is changed from power-on to power-off, and normally closed switch-on is changed from power-off to power-off.
The miniature relay for detecting the two coils of the DC 24v and the AC 220v is low in cost, and detection can be accurately realized.
To sum up; according to the automatic detection device for the miniature relay, after the start key SW1 is pressed, the control chip 2 receives a start signal, the standard states of the relay to be detected are detected, in the detection process, the green light of the LED1 is normally on after the LED is output, when the detection result meets the standard requirement, the green light of the LED2 is normally on after the LED2 is output, the passive buzzer LS1 sounds a sound, when the detection result does not meet the standard requirement, the laser LED3 emits light and the red light of the laser LED3 is normally on after the LED3 is output, the passive buzzer LS1 sounds two sounds, the cost is low, and the detection can be rapidly and accurately realized.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should be covered by the protection scope of the present invention by making equivalents and modifications to the technical solution and the inventive concept thereof.
Claims (1)
1. The automatic detection device for the miniature relay is characterized by comprising a detection circuit board (1), wherein a control chip (2), a key circuit (3), a power module circuit (4), a test-in-test and test result prompting circuit (5), a detection circuit (6) and a buzzer circuit (7) are respectively soldered on the detection circuit board (1), the power module circuit (4) is respectively connected with the control chip (2) and the detection circuit (6) and is used for supplying power, input ends of the key circuit (3) and the detection circuit (6) are respectively connected with the control chip (2), and output ends of the control chip (2) are respectively connected with the test-in-test and test result prompting circuit (5) and the buzzer circuit (7);
Pins 1,2 and 3 of the control chip (2) are connected to a test-in-test and test result prompting circuit (5); the pin 12 of the control chip (2) is connected with a parallel point of the resistor R6, the capacitor C3 and the terminal angle 1 of the DEBUG1 for resetting; the pin 14 of the control chip (2) is connected with the end corner 2 of the DEBUG 1; pins 15 and 16 of the control chip (2) are respectively connected with end corners 5 and 4 of the DEBUG1, and are used for burning a program of C programming into the control chip (2) from five pins of the DEBUG 1; a pin 17 of the control chip (2) is connected with the key circuit (3); the pin 26 of the control chip (2) is connected with the buzzer circuit (7), and the pin 36 of the control chip (2) is connected with the triode base terminal of the detection circuit (6); pins 45, 46, 47 and 48 of the control chip (2) are respectively connected with a relay contact end of the detection circuit (6) to detect each standard state of the relay;
The end angle 1 of the DM1-115GP-1 travel switch SW1 of the key circuit (3) is connected with a parallel point of the resistor R16 and the pin 17 of the control chip (2), the resistor R16 is connected with VCC, and the end angle 2 of the DM1-115GP-1 travel switch SW1 is grounded and connected with the end angle 3;
Pin N of an AM22-12W-V module U1 of a power supply module circuit (4) is connected with end angles 1 of CN1 and CN3, a pin L of the AM22-12W-V module U1 is connected with an end angle 3 of CN1 and CN3 in series, and the end angles 1 and 3 are externally connected with input alternating voltage 220V;
The pin Vol+ of the AM22-12W-V module U1 is connected with 24V voltage, the pin Vol+ supplies 24V voltage to the detection circuit (6), and the Vo2+ supplies 5V direct current to the control chip (2);
The in-test and test result prompting circuit (5) is divided into three paths of identical circuits, and three states of an in-test circuit, a test qualified circuit and a test bad circuit are respectively formed, wherein a collector serial resistor R38 and an LED1 of a collector of a DTC143XCA transistor N4 of the in-test circuit are connected in VCC, a base electrode of the DTC143XCA transistor N4 is connected with a pin 1 of a control chip (2), a collector serial resistor R39 and an LED2 of a collector of a DTC143XCA transistor N5 of the test qualified circuit are connected in VCC, a collector serial resistor R40 and an LED3 of a collector of a DTC143XCA transistor N5 are connected in VCC, and a base electrode of the DTC143XCA transistor N6 is connected with a pin 3 of the control chip (2);
The terminal angle 1 of the ship-shaped switch K1 of the detection circuit (6) is connected to the pin N of the AM22-12W-V module U1, the terminal angle 2 of the ship-shaped switch K1 is connected to the terminal angle 3 of the power relay K2, the terminal angle 4 of the power relay K2 is connected to the coil terminal angle 13 of the relay K3, the coil terminal angle 1 of the power relay K2 is connected to the parallel point of the diode D5 and VCC, the coil terminal angle 2 of the power relay K2 is connected to the parallel point of the diode D5 and the collector of the DTC143XCA transistor N1, and the base of the DTC143XCA transistor N1 is connected to the pin 36 of the control chip (2);
The coil end angle 14 of the relay K3 is connected to the end angle 2 of the change-over switch K4, the end angle 3 of the change-over switch K4 is connected to 24V voltage, and the end angle 1 of the change-over switch K4 is connected to the L end of the power supply module circuit (4);
The end angle 1 of the relay K3 is connected with a parallel point of the resistor R4 and the pin 47 of the control chip (2), the end angle 5 of the relay K3 is connected with a parallel point of the resistor R3 and the pin 48 of the control chip (2), the end angle 4 of the relay K3 is connected with a parallel point of the resistor R2 and the pin 46 of the control chip (2), the end angle 8 of the relay K3 is connected with a parallel point of the resistor R1 and the pin 45 of the control chip (2), and the other ends of the resistor R1, the resistor R2, the resistor R3 and the resistor R4 are connected with VCC;
The base electrode of a DTC143XCA transistor N3 of the buzzer circuit (7) is connected with a pin 26 of the control chip (2), and the collector serial resistor R31 of the DTC143XCA transistor N3 is connected with the passive buzzer LS 1;
The terminal angles 1, 5, 4 and 8 of the relay K3 are also electrically connected with four groups of screw holes formed in the detection circuit board (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110924315.5A CN113687221B (en) | 2021-08-12 | Automatic detection device for miniature relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110924315.5A CN113687221B (en) | 2021-08-12 | Automatic detection device for miniature relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113687221A CN113687221A (en) | 2021-11-23 |
| CN113687221B true CN113687221B (en) | 2024-07-02 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212845790U (en) * | 2020-06-12 | 2021-03-30 | 南京林业大学 | Small capacity relay characteristic detector |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212845790U (en) * | 2020-06-12 | 2021-03-30 | 南京林业大学 | Small capacity relay characteristic detector |
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