Temperature controller capable of monitoring forward and reverse plugging of plug

Abstract

The utility model relates to the technical field of temperature controllers, in particular to a temperature controller capable of monitoring forward and reverse plugging of a plug. According to the utility model, when the circuit is positively connected, the normally open contact of the first relay is closed, the first indicating lamp is electrified, and the positively connected signal input end of the control panel receives a high-level signal, so that related personnel can conveniently carry out subsequent program design; the current flowing through the circuit is extremely small and is equivalent to a high-resistance resistor, at the moment, the piezoresistor is equivalent to a disconnected switch, the first indicator lamp cannot be powered on, and the positive connection signal input end of the control panel cannot receive a high-level signal, so that related personnel can conveniently carry out subsequent program design, and then monitoring of positive and negative plugging of the plug is realized; positive and negative plugging of the plug can be monitored under the condition that the circuit is not short-circuited, and related prompts can be given.

Description

TECHNICAL FIELD

[0001] The utility model relates to temperature controller technical field, concretely relates to a temperature controller of monitoring plug positive and negative plug. BACKGROUND

[0002] The current temperature controller contains shell, control panel, temperature probe, probe fixed pressing plate, the temperature probe is fixed on the equipment surface through the probe fixed pressing plate, the temperature probe can induct equipment temperature rise, and the temperature signal is passed to the control panel.

[0003] But the current conventional temperature controller has an adverse effect:

[0004] The function is relatively single, for example, can only be observed by relevant personnel after the fuse is fused, whether the joint of the temperature controller is inserted reversely, cannot monitor the plug positive and negative plug under the condition that the circuit is not short-circuited, and give relevant prompt.

[0005] Therefore, the prior art still needs further development. UTILITY MODEL CONTENT

[0006] The utility model aims at overcoming the above technical insufficient, provides a temperature controller of monitoring plug positive and negative plug, to solve the problem of prior art.

[0007] To reach the above technical purpose, according to the first aspect of the utility model, the utility model provides a temperature controller of monitoring plug positive and negative plug, including:

[0008] Plug positive and negative plug monitoring circuit, the plug positive and negative plug monitoring circuit includes:

[0009] First fuse, first relay, control panel, external voltage input end and zero line, the first relay includes coil power supply contact and first normally open contact, the external voltage input end is electrically connected with one end of first fuse, the other end of first fuse is connected with coil power supply contact, the control panel includes positive signal input end, the first normally open contact is electrically connected with the positive signal input end of control panel, and the first voltage-sensitive resistor is connected between the external voltage input end and zero line.

[0010] Specifically, the first voltage-sensitive resistor is connected between the external voltage input end and zero line, including:

[0011] One end of the first voltage-sensitive resistor is electrically connected with one end of the external voltage input end, and the other end of the first voltage-sensitive resistor is electrically connected with zero line.

[0012] Specifically, the other end of the first fuse is connected with one end of the sixth capacitor, and the other end of the sixth capacitor is electrically connected with zero line and ground wire respectively.

[0013] Specifically, the temperature controller capable of monitoring the plug insertion direction further comprises:

[0014] A first indicator lamp is arranged on the control panel, and the first indicator lamp comprises an indicator lamp power input end, and the first relay further comprises a second normally open contact, and the indicator lamp power input end is electrically connected with the second normally open contact.

[0015] Advantages:

[0016] When the circuit is connected in positive, the normally open contact of the first relay is attracted, and the first indicator lamp is powered, and the positive connection signal input end of the control panel receives a high level signal, so that relevant personnel can carry out subsequent program design, when the circuit is connected in reverse, because the voltage between the two ends of the pressure sensitive resistor is lower than the threshold value, the current flowing through it is extremely small, which is equivalent to a high resistance resistor, at this time, the pressure sensitive resistor is equivalent to a disconnected switch, the first indicator lamp cannot be powered, and the positive connection signal input end of the control panel cannot receive a high level signal, so that relevant personnel can carry out subsequent program design, thereby realizing the monitoring of the plug insertion direction, realizing the monitoring of the plug insertion direction under the condition that the circuit is not short-circuited, and giving relevant prompt. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a circuit principle schematic diagram of the plug insertion direction monitoring circuit provided in the embodiment of the utility model. DETAILED DESCRIPTION

[0018] In order to make the personnel in the art better understand the technical scheme of the utility model, the technical scheme of the utility model will be described clearly and completely below in combination with the drawings of the utility model, based on the embodiment in the application, other similar embodiments obtained by the personnel in the art without creative labor should belong to the protection scope of the application. In addition, the direction words mentioned in the following embodiments, such as 'up', 'down', 'left', 'right' and the like are only the directions of the drawings, therefore, the direction words used are used to explain but not to limit the utility model.

[0019] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms 'arrange' and 'connect' should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected, it can be mechanically connected, or electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For the personnel in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0020] The utility model will be further described below in combination with the drawings and the preferred embodiments.

[0021] Please refer to Figure 1 The utility model provides a can monitor plug positive and negative plug -in temperature controller, including:

[0022] Plug positive and negative plug -in monitoring circuit, the plug positive and negative plug -in monitoring circuit includes:

[0023] First fuse F1, first relay JDQ, control panel, external voltage input end L and zero line N, first relay JDQ includes coil power supply contact and first normally open contact, the external voltage input end L is connected with one end of first fuse F1, the other end of first fuse F1 is connected with coil power supply contact, the control panel includes positive signal input end P17, the first normally open contact is connected with positive signal input end P17 of control panel, first pressure -sensitive resistance RV1 is connected between the external voltage input end L and zero line N.

[0024] Specifically, the external voltage input end L and the zero line N are connected with the first pressure -sensitive resistance RV1, comprising:

[0025] One end of the external voltage input end L is electrically connected with one end of the first pressure -sensitive resistance RV1, and the other end of the first pressure -sensitive resistance RV1 is electrically connected with the zero line N.

[0026] Specifically, the other end of the first fuse F1 is connected with one end of the sixth capacitor C6, and the other end of the sixth capacitor C6 is electrically connected with the zero line N and the ground wire, respectively.

[0027] Specifically, the temperature controller capable of monitoring plug positive and negative plug -in further includes:

[0028] First indicating lamp LED, the first indicating lamp LED is arranged on the control panel, and the first indicating lamp LED includes an indicating lamp power supply input end; the first relay JDQ further includes a second normally open contact; and the indicating lamp power supply input end is electrically connected with the second normally open contact.

[0029] It can be understood that, when the circuit is connected positively, the normally open contact of the first relay is attracted, and the first indicating lamp is powered on; and the positive signal input end of the control panel receives a high level signal, so that relevant personnel can carry out subsequent program design; when the circuit is connected reversely, since the current flowing through the pressure -sensitive resistance is extremely small when the voltage between the two ends of the pressure -sensitive resistance is lower than the threshold value of the pressure -sensitive resistance, the pressure -sensitive resistance is equivalent to a high resistance resistor; at this time, the pressure -sensitive resistance is equivalent to a disconnected switch, and the first indicating lamp cannot be powered on; and the positive signal input end of the control panel cannot receive a high level signal, so that relevant personnel can carry out subsequent program design, and the monitoring of plug positive and negative plug -in is realized; and the plug positive and negative plug -in is monitored under the condition that the circuit is not short-circuited, and relevant prompts are given.

[0030] The contents not described in detail in the present specification belong to the existing technology known to those skilled in the art.

[0031] The technical features described above can be combined arbitrarily. Although all possible combinations of the technical features are not described, any combination of the technical features should be considered to be covered by the present specification, as long as there is no contradiction in such a combination.

[0032] The specific embodiments of the present application described above do not constitute a limitation on the scope of protection of the present application. Any other corresponding changes and modifications made according to the technical concept of the present application should be included in the scope of protection of the claims of the present application.

Claims

1. A temperature controller capable of monitoring the orientation of a plug, characterized in that, The temperature controller capable of monitoring the correct orientation of the plug includes: A plug reversibility detection circuit, comprising: The system comprises a first fuse, a first relay, a control board, an external voltage input terminal, and a neutral wire. The first relay includes a coil power supply contact and a first normally open contact. The external voltage input terminal is electrically connected to one end of the first fuse, and the other end of the first fuse is connected to the coil power supply contact. The control board includes a positive signal input terminal, and the first normally open contact is electrically connected to the positive signal input terminal of the control board. A first varistor is connected between the external voltage input terminal and the neutral wire.

2. The temperature controller capable of monitoring the correct orientation of the plug as described in claim 1, characterized in that, A first varistor is connected between the external voltage input terminal and the neutral line, including: One end of the external voltage input terminal is electrically connected to one end of the first varistor, and the other end of the first varistor is electrically connected to the neutral line.

3. The temperature controller capable of monitoring the correct orientation of the plug as described in claim 2, characterized in that, The other end of the first fuse is connected to one end of the sixth capacitor, and the other end of the sixth capacitor is electrically connected to the neutral wire and the ground wire respectively.

4. The temperature controller capable of monitoring the correct orientation of the plug as described in claim 1, characterized in that, The temperature controller that can monitor the correct orientation of the plug also includes: The first indicator light is disposed on the control board and includes an indicator light power supply input terminal. The first relay also includes a second normally open contact, and the indicator light power supply input terminal is electrically connected to the second normally open contact.

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