Force sensor with CAN node and baud rate setting function

Abstract

The utility model provides a force sensor with CAN node and baud rate setting function, comprising a sensor elastomer, one end of the sensor elastomer is provided with an output joint, and the output joint comprises a first CAN high level pin, a first CAN low level pin, a second CAN high level pin, and a second CAN low level pin. According to the force sensor with the CAN node and Baud rate setting function, the input signal point specially used for setting the CAN node and the Baud rate is designed, when 3.3 V signals are accessed to the input signal point, the input signal point is in one state, when 3.3 V signals are not accessed to the input signal point, the input signal point is in the other state, the CAN node and the Baud rate of the sensor are different in value in the two states, and therefore the force sensor can be used for setting the CAN node and the Baud rate. Therefore, the CAN node and the baud rate of the sensor are changed, the operation is simple and convenient, and the problem of faults caused by mistaken touch is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to force sensor technical field especially, it is a kind of force sensor with CAN node and baud rate setting function. BACKGROUND

[0002] The most common parameter setting mode of the CAN node and baud rate of the existing CAN communication force sensor is to connect computer, and to send CAN instruction by using similar Pcanview software to realize, and some products are realized by designing dial switch on sensor. The mode of connecting computer and sending CAN instruction by using similar Pcanview software to realize has the problems of complex operation, inconvenient field assembly and after-sales personnel operation etc.;And the mode of realizing by designing dial switch on sensor has the problems of low protection level, easy to be mistaken touch in use process and cause fault. UTILITY MODEL CONTENT

[0003] Therefore, one purpose of the utility model is to provide a kind of force sensor with CAN node and baud rate setting function to solve the problems mentioned in the background art and overcome the deficiencies in the prior art.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A kind of force sensor with CAN node and baud rate setting function, including sensor elastomer, one end of the sensor elastomer is equipped with output connector, the output connector includes first road CAN high level pin, first road CAN low level pin, second road CAN high level pin, second road CAN low level pin.

[0006] Further, the output connector further includes first input signal pin and second input signal pin.

[0007] Further, the output connector further includes power positive pin, power negative pin and 3.3V signal pin.

[0008] Further, the sensor elastomer is equipped with containing bin, the containing bin includes first containing bin, second containing bin, third containing bin, fourth containing bin, the first containing bin and the third containing bin are strain bin, a plurality of strain gauges are arranged in the first containing bin and the third containing bin, and a plurality of strain gauges constitute a wheatstone bridge.

[0009] Further, each containing bin is equipped with sealing cover, the sealing cover covers the opening of the containing bin, and sealing glue is filled between the sealing cover and the opening of the containing bin.

[0010] Further, the first accommodating bin is connected with the second accommodating bin through a first through hole, the second accommodating bin is connected with the third accommodating bin through a second through hole, the third accommodating bin is connected with the fourth accommodating bin through a third through hole, and the first accommodating bin is connected with the fourth accommodating bin through a fourth through hole.

[0011] Further, one end of the sensor elastic body is provided with a wire outlet, one end of the output connector is inserted into the wire outlet, and the wire outlet is connected with the fourth accommodating bin through a fifth through hole.

[0012] Further, the second accommodating bin or the fourth accommodating bin is an electronic bin, the electronic bin is provided with a circuit board, the circuit board is provided with a signal processing unit and a control unit, the strain gauge is electrically connected with the signal processing unit, and the signal processing unit is electrically connected with the control unit.

[0013] Therefore, the utility model has following beneficial effects:

[0014] The utility model discloses a force sensor with CAN node and baud rate setting function, and the input signal point specially used for CAN node and baud rate setting is designed, when 3.3V signal is accessed to the input signal point, it is one kind of state, and it is another kind of state when not accessing, the CAN node and baud rate of sensor in two kinds of states are different values, so that the change of sensor CAN node and baud rate is realized, and the problem that the fault caused by accidental touch is avoided when the operation is simple.

[0015] The CAN node and the baud rate setting of the utility model product are realized by external high and low level, so that when multiple CAN node sensors need to be installed on a line, multiple sensors can still use the same material coding, that is, completely same material.

[0016] The additional aspects and advantages of the utility model will be partly given in the following description, partly will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the utility model will become obvious and easy to understand from the description of embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is the pin definition diagram of the output connector of the force sensor of the utility model;

[0019] Figure 2 It is the isometric view of the force sensor of the utility model;

[0020] Figure 3 It is the isometric view of another perspective of the force sensor of the utility model.

[0021] Figure 4 is the front view of the force sensor of the utility model;

[0022] Figure 5 is Figure 4 the A-A section view shown in the figure;

[0023] Figure 6 is Figure 4 the D-D section view shown in the figure;

[0024] Figure 7 is the sealing cover structure schematic view of the force sensor of the utility model;

[0025] Figure 8 is the schematic view of the embodiment of the utility model for realizing the change of CAN node number of multiple force sensors.

[0026] In the figure: 1, sensor elastomer;2, circuit board;4, output connector;5, first containing bin;6, second containing bin;7, third containing bin;8, fourth containing bin;9, strain gauge;11, first through hole;12, second through hole;13, cover;14, fourth through hole;15, sealing cover;16, outlet;17, fifth through hole;18, convex ring;A: power supply positive pin;B: power supply negative pin;C: first road CAN low level pin;D: first road CAN high level pin;E: second road CAN high level pin;F: second road CAN low level pin;G: first input signal pin;H: second input signal pin;I: 3.3V signal pin. DETAILED DESCRIPTION

[0027] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as limiting the utility model.

[0028] In the utility model, unless another explicit provision and limitation, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, or detachable connection, or integrally connected;Can be mechanical connection, or electrical connection;Can be directly connected, or indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] As Figures 1-8As shown, a force sensor with CAN node and baud rate setting function includes a sensor elastic body 1, one end of the sensor elastic body 1 is provided with an output connector 4, the output connector 4 includes a first CAN high level pin D, a first CAN low level pin C, a second CAN high level pin E, and a second CAN low level pin F.

[0030] Further, the output connector 4 further includes a first input signal pin G and a second input signal pin H.

[0031] Further, the output connector 4 further includes a power positive pin A, a power negative pin B, and a 3.3V signal pin I.

[0032] The force sensor with CAN node and baud rate setting function of the utility model, design is exclusively used for CAN node and baud rate setting input signal point, when input signal point access 3.3V signal is a kind of state, not access is another state, the CAN node and baud rate of sensor in two states are different values, to realize the change of sensor CAN node and baud rate, it is simple and easy to operate simultaneously and will not cause the problem of fault due to accidental touch.

[0033] As Figure 1 As shown, the force sensor of the utility model is compared with traditional force sensor, the difference mainly is that the circuit design of sensor uses the different connection mode of external wiring harness, to realize the setting of CAN node and baud rate. As shown in the drawing, the I pin of sensor output line, i.e. output connector 4, is 3.3V signal pin, G, H are signal lines, and are first input signal pin and second input signal pin respectively, first input signal pin is short-circuited with 3.3V signal pin, second input signal pin is not short-circuited with 3.3V signal pin as state 1, first input signal pin is not short-circuited with 3.3V signal pin, second input signal pin is short-circuited with 3.3V signal pin as state 2, first input signal pin is short-circuited with 3.3V signal pin, second input signal pin is short-circuited with 3.3V signal pin as state 3, and first input signal pin is not short-circuited with 3.3V signal pin, second input signal pin is not short-circuited with 3.3V signal pin as state 4. After the above-mentioned four states are detected by the self-circuit of force sensor, they can be used as the signal input of CAN node and baud rate change, to realize the change of CAN node and baud rate. For example, when state 1, CAN2 node is 2, CAN2 baud rate is 125K, when state 2, CAN2 node is 4, CAN2 baud rate is 250K.

[0034] As Figure 8As shown in the figure, in one embodiment, five sensors of the utility model are adopted, the sensors A-D realize the change of CAN node number through whether the first input signal pin and the second input signal pin are connected to 3.3V, so that the CAN node numbers of the four sensors on the circuit are different.

[0035] Further, as shown in the figure, Figure 2 and Figure 3 The sensor elastic body 1 is provided with a containing bin, and the containing bin includes a first containing bin 5, a second containing bin 6, a third containing bin 7 and a fourth containing bin 8. The first containing bin 5 and the third containing bin 7 are strain bins, and a plurality of strain gauges 9 are arranged in the first containing bin 5 and the third containing bin 7. The plurality of strain gauges 9 form a Wheatstone bridge.

[0036] As an embodiment, the strain gauge 9 is a resistance strain gauge 9.

[0037] Further, as shown in the figure, Figure 7 Each containing bin is provided with a sealing cover 15, and the sealing cover 15 covers the opening of the containing bin. A sealant is filled between the sealing cover 15 and the opening of the containing bin.

[0038] As shown in the figure, Figure 7 As an embodiment, the sealing cover 15 includes a cover body 13, and a circumferential protruding ring 18 is arranged on the inner side of the cover body 13. A flange is arranged at the opening of the containing bin, and an annular groove corresponding to the protruding ring 18 is arranged on the flange (not shown in the figure). The protruding ring 18 is embedded in the annular groove, and the cover body 13 of the sealing cover 15 abuts against the flange, so that the containing bin can be well sealed.

[0039] Further, as shown in the figure, Figure 5 and Figure 6 The first containing bin 5 and the second containing bin 6 are connected through a first through hole 11, the second containing bin 6 and the third containing bin 7 are connected through a second through hole 12, the third containing bin 7 and the fourth containing bin 8 are connected through a third through hole, and the first containing bin 5 and the fourth containing bin 8 are connected through a fourth through hole 14.

[0040] Further, one end of the sensor elastic body 1 is provided with a wire outlet 16, and one end of the output connector 4 is inserted into the wire outlet 16. The wire outlet 16 and the fourth containing bin 8 are connected through a fifth through hole 17.

[0041] As an embodiment, the first containing bin 5, the second containing bin 6, the third containing bin 7 and the fourth containing bin 8 are all cylindrical.

[0042] As an embodiment, the first containing bin 5 and the third containing bin 7 are strain bins, and the second containing bin 6 and the fourth containing bin 8 are electronic bins.

[0043] As another implementation, the first accommodating bin 5 and the third accommodating bin 7 are electronic bins, and the second accommodating bin 6 and the fourth accommodating bin 8 are strain bins.

[0044] As another implementation, the first accommodating bin 5, the second accommodating bin 6 and the third accommodating bin 7 are strain bins, and the fourth accommodating bin 8 is an electronic bin.

[0045] Further, the second accommodating bin 6 or the fourth accommodating bin 8 is an electronic bin, and the electronic bin is provided with a circuit board 2, and the circuit board 2 is provided with a signal processing unit, and the strain gage 9 is electrically connected with the signal processing unit.

[0046] It can be understood that the signal processing unit can be a signal processing circuit or a signal acquisition circuit, and when the force sensor performs the force measurement work, the resistance strain gage 9 in the strain bin detects the force, and the Wheatstone bridge millivolt signal is collected into the signal processing circuit or the signal acquisition circuit for processing and output.

[0047] The difference between the utility model product and the traditional force sensor lies in that a signal input port is designed at the output port of the sensor, the port is connected with high and low levels representing different states, and the change of the CAN parameter of the sensor can be realized.

[0048] The setting of the CAN node and the baud rate of the utility model product can be realized by external high and low levels, so that when multiple CAN node sensors need to be installed on one line, the multiple sensors can still use the same material code, that is, the same material.

[0049] The signal input port is designed on the output connector of the sensor, and when the port is connected with high and low levels, different states can be recognized, and the change of the node, the baud rate and other parameters of the CAN can be realized.

[0050] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] It is not difficult for those skilled in the art to understand that the utility model includes any combination of the utility model contents and the specific implementation mode part of the above description and the parts shown in the drawings, and each scheme formed by these combinations is not described one by one due to the limited length and for the sake of brevity of the description. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

[0052] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and those skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A force sensor having a CAN node and a baud rate setting function, characterized by, The sensor elastic body is provided with an output connector at one end, and the output connector comprises a first CAN high level pin, a first CAN low level pin, a second CAN high level pin and a second CAN low level pin.

2. The force sensor with CAN node and baud rate setting function according to claim 1, characterized in that, The output connector further comprises a first input signal pin and a second input signal pin.

3. The force sensor with CAN node and baud rate setting function according to claim 1, characterized in that, The output connector further comprises a power positive pin, a power negative pin and a 3.3V signal pin.

4. The force sensor with CAN node and baud rate setting function according to claim 1, characterized in that, The sensor elastic body is provided with a containing bin, and the containing bin comprises a first containing bin, a second containing bin, a third containing bin and a fourth containing bin.

5. The force sensor with CAN node and baud rate setting function according to claim 4, characterized in that, Each containing bin is provided with a sealing cover, and the sealing cover covers the opening of the containing bin.

6. The force sensor with CAN node and baud rate setting function according to claim 4, characterized in that, The first containing bin and the second containing bin are connected through a first through hole, the second containing bin and the third containing bin are connected through a second through hole, the third containing bin and the fourth containing bin are connected through a third through hole, and the first containing bin and the fourth containing bin are connected through a fourth through hole.

7. The force sensor with CAN node and baud rate setting function according to claim 4, characterized in that, One end of the sensor elastic body is provided with a wire outlet, and one end of the output connector is inserted into the wire outlet.

8. The force sensor with CAN node and baud rate setting function according to claim 4, characterized in that, The second containing bin or the fourth containing bin is an electronic bin, and the electronic bin is provided with a circuit board. The strain gauge is electrically connected with the signal processing unit.

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