Multi-channel signal rapid detection device

Abstract

The utility model discloses a multipath signal rapid detection device comprising a power supply module, a switching relay, a switching button, an A / D converter I, an A / D converter II, a microprocessor and a display screen. The power supply module is used for supplying power to the switching button, the microprocessor and the display screen; the conversion relay is provided with a normally open contact and a normally closed contact, an analog signal is connected with the A / D converter I through the normally open contact, a switching signal is connected with the A / D converter II through the normally closed contact, and the output ends of the A / D converter I and the A / D converter II are connected with the microprocessor; the switching button is electrically connected with the switching relay. When the switching button is pressed, the corresponding normally open contact is closed and connected. When the switching button is lifted up, the corresponding normally-closed contact is closed and switched on; and the microprocessor receives and processes data information of the analog quantity signal or the switching value signal, and sends a display command to the display screen. According to the utility model, through button switching, detection of analog signals or switching value signals can be rapidly carried out, and the detected signals can be displayed in real time.

Description

TECHNICAL FIELD

[0001] The utility model relates to signal detection technical field especially relates to a multichannel signal rapid detection device. BACKGROUND

[0002] At present, in signal detection equipment instrument, many take single type signal detection as the main, cannot cope with the situation needing to detect analog signal and switch signal simultaneously, and the equipment that can complete analog and switch detection without changing device is urgently needed. INNOVATION CONTENT

[0003] Therefore, the utility model provides a multichannel signal rapid detection device, and the detection of analog signal or switch signal can be carried out quickly through button switching, and the detected signal is displayed in real time.

[0004] The utility model discloses a multichannel signal rapid detection device, including power module, conversion relay, switching button, AD converter I, AD converter II, microprocessor and display screen, power module is used to power supply switching button, microprocessor and display screen, conversion relay is equipped with normally open contact and normally closed contact, analog signal is connected with AD converter I through normally open contact, and switch signal is connected with AD converter II through normally closed contact, and AD converter I, AD converter II output end is connected with microprocessor, switching button is electric with conversion relay, and switching button is pressed and the corresponding normally open contact is closed and is connected, and switching button lifts and the corresponding normally closed contact is closed and is connected, and microprocessor receives, handles analog signal or switch signal's data information, and sends display command to display screen, and display screen receives display command and shows data information.

[0005] Further, the indicator lamp is also provided, and the microprocessor controls the opening and closing of the indicator lamp, and the opening and closing of the indicator lamp corresponds to whether there is analog signal or switch signal.

[0006] Further, the buzzer is also provided, and the microprocessor is used for comparing data information with threshold value, and when exceeding the threshold value, an alarm signal is sent to the buzzer, and the buzzer receives the alarm signal and alarms.

[0007] Further, the power module is externally connected with AC220V for power supply of the switching button and the display screen, and the power module can also convert AC220V into direct current for power supply of the microprocessor.

[0008] Further, the microprocessor realizes the external transmission of data information through the serial port.

[0009] Compared with the prior art, the utility model has the beneficial effects that:

[0010] 1.The utility model discloses a quick detection of analog quantity and switch quantity signal can be realized, realize a device through quick switching can realize the detection of analog quantity signal and switch quantity signal and make display, convenient and efficient. The utility model discloses in circuit troubleshooting, circuit signal inspection has very high practical value.

[0011] 2.The utility model discloses through the detection of analog quantity signal or switch quantity signal of conversion relay's normally open contact and normally closed contact respectively, improve the integration of the work site detection tool, reduce the trouble of different tools when detecting different signals in the work site.

[0012] 3.The utility model discloses still be equipped with buzzer, and microprocessor is used for data information and threshold's comparison, when exceeding threshold, send alarm signal to buzzer, and buzzer receives alarm signal and alarms, and prompt signal anomaly. DRAWINGS

[0013] Figure 1 It is principle diagram for multi -signal quick detection device. CONCRETE IMPLEMENTING METHOD

[0014] In order to make the purpose, technical scheme and advantage of the utility model more clear and obvious, the following is combined with the drawing and example, and the utility model is further explained in detail. It should be understood that the specific example described here is only used to explain the utility model, and is not used to limit the utility model.

[0015] The utility model provides a kind of multi-channel signal quick detection device, as shown in Figure 1 It includes power module, signal display module, signal detection module, signal output module.

[0016] Signal detection module includes a switch button, conversion relay, microprocessor, A / D converter I and A / D converter II;A / D converter I circuit is analog signal detection circuit and A / D converter II circuit is switch quantity signal detection circuit.

[0017] Conversion relay is equipped with two groups of normally open contact and two groups of normally closed contact, in other embodiments, the relay of appropriate group number contact can be set according to actual situation. Analog quantity signal is connected with A / D converter I through normally open contact, and switch quantity signal is connected with A / D converter II through normally closed contact, and the output end of A / D converter I, A / D converter II is connected with microprocessor;Switch button is electrically connected with conversion relay, and corresponding normally open contact is closed and connected when switch button is pressed, and analog quantity signal is accessed analog signal detection circuit, i.e. analog quantity signal is connected with microprocessor through A / D converter I;Corresponding normally closed contact is closed and connected when switch button is lifted, and switch quantity signal is accessed switch quantity signal detection circuit, i.e. switch quantity signal is connected with microprocessor through A / D converter II.

[0018] The analog signal and the switching signal pass through different collection circuits (A / D converter I circuit and A / D converter II circuit) after the switching button to realize the collection of the analog or switching signal, and the A / D converter I and the A / D converter II send the analog or switching signal to the microprocessor. The microprocessor receives and processes the data information (analog or switching signal) of the analog signal or the switching signal, and sends a command signal to the signal display module; the command signal includes a display command and an alarm command. For example, the microprocessor can be used for comparison of the data information and a threshold value, and an alarm signal is sent when the threshold value is exceeded.

[0019] The signal display module includes a liquid crystal display screen, an LED indicator light and a buzzer. The LED indicator light receives a display command and is turned on or off under the control of the microcontroller, and the LED indicator light is turned on when the analog signal or the switching signal is detected, and the LED indicator light is turned off when the analog signal or the switching signal is not detected. The liquid crystal display screen receives a display command and displays data information, specifically, the liquid crystal display screen is used to display whether the collected signal is an analog signal or a switching signal and the corresponding numerical value. The buzzer is used to receive an alarm signal and alarm, that is, when the data information exceeds the threshold value, the buzzer receives the alarm signal sent by the microcontroller and alarms.

[0020] The power module is used to power the switching button, the microprocessor and the display screen, specifically, the power module is externally connected to AC 220V for power supply of the display screen and the switching button, and the power module can also convert AC 220V into direct current through an AC / DC converter or power the microprocessor through a battery power supply.

[0021] In order to facilitate the output of the collected analog and switching signals, the microprocessor reserves an RS-232 serial port communication to realize external data transmission.

[0022] The utility model is suitable for the detection and display of analog signals and switching signals in a circuit, and one device can realize the rapid detection of analog signals and switching signals at the same time, and has high practical value in circuit fault troubleshooting and circuit signal inspection.

[0023] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A multi-channel signal fast detection device, characterized in that, The power module, the conversion relay, the switch button, the A / D converter I, the A / D converter II, the microprocessor and the display screen are included; the power module is used for supplying power for the switch button, the microprocessor and the display screen; The conversion relay is provided with a normally open contact and a normally closed contact; the analog signal is connected with the A / D converter I through the normally open contact, the on-off signal is connected with the A / D converter II through the normally closed contact, and the output ends of the A / D converter I and the A / D converter II are connected with the microprocessor; the switch button is electrically connected with the conversion relay, the corresponding normally open contact is closed and connected when the switch button is pressed, and the corresponding normally closed contact is closed and connected when the switch button is lifted; The microprocessor receives and processes the data information of the analog signal or the on-off signal, and sends a display command to the display screen; The display screen receives the display command and displays the data information.

2. The multi-channel signal fast detection device of claim 1, wherein, The indicator lamp is also provided, the microprocessor controls the opening and closing of the indicator lamp, and the opening and closing of the indicator lamp respectively corresponds to whether there is the analog signal or the on-off signal.

3. The apparatus of claim 1, wherein The buzzer is also provided, the microprocessor is used for comparing the data information with the threshold value, sends an alarm signal to the buzzer when the threshold value is exceeded, and the buzzer receives the alarm signal and alarms.

4. The apparatus of claim 1, wherein The power module is externally connected with AC220V for supplying power for the switch button and the display screen, and the power module can also convert AC220V into direct current for supplying power for the microprocessor.

5. The fast detection device of any one of claims 1 to 4, wherein The microprocessor realizes the external transmission of the data information through the serial port.

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